CN106471745B

CN106471745B - Dual-mode wireless electric system with full-duplex mode and semiduplex mode

Info

Publication number: CN106471745B
Application number: CN201480080530.XA
Authority: CN
Inventors: M.怀维尔
Original assignee: Telefonaktiebolaget LM Ericsson AB
Current assignee: Telefonaktiebolaget LM Ericsson AB
Filing date: 2014-07-11
Publication date: 2019-07-16
Anticipated expiration: 2034-07-11

Abstract

The embodiment of open dual-mode wireless electric system.In one embodiment, radio system includes the first radio unit, and first radio unit includes: conveyer；Receiver；Antenna；And switching circuit, it is suitable for the input coupling of the receiver by the output of the conveyer of the first radio unit or the first radio unit to the antenna of the first radio unit.In addition, radio system includes the second radio unit comprising antenna and one of following: conveyer has the output for the antenna for being coupled to the second radio unit；Receiver has the input for the antenna for being coupled to the second radio unit；Or tool be selectively coupled to the second radio unit antenna output conveyer and tool be selectively coupled to the second radio unit antenna input receiver.Radio system has full-duplex mode and semiduplex mode.

Description

Dual-mode wireless electric system with full-duplex mode and semiduplex mode

Technical field

This disclosure relates to the radio system of the wireless communication node with full duplex operating mode and half-duplex operating mode System.

Background technique

Currently, there is the increase to full duplex radio electric system, especially for the base station of cellular communications networks to pay close attention to.Such as Used herein, " full duplex radio electric system " is a kind of radio system, using identical time and frequency resource into Row transmission and reception.Therefore, for base station, full duplex radio electric system is a kind of radio system, uses identical frequency Resource transmits downlink simultaneously and receives uplink.Main bugbear in full duplex radio electric system is in strong many biographies Weak received signal is detected in the presence of the number of delivering letters.It receives signal and generallys use frequency division duplex with being isolated between signal is transmitted (FDD) filtering in radio system or by using the half-duplex scheme in such as time division duplex (TDD) radio system To realize.But these technologies can not be suitable for providing the isolation full duplex radio electric system.

Accordingly, there exist for provide the reception signal in full duplex radio electric system and transmit signal between be isolated be System and method.

Summary of the invention

It is open with the relevant system of the dual-mode wireless electric system of full duplex operating mode and half-duplex operating mode and Method.In one embodiment, radio system is a kind of radio node (such as cellular communication in wireless communication system Base station in network) radio system.In one embodiment, radio system includes the first radio unit comprising: Conveyer；Receiver；Antenna；And switching circuit, it is suitable for the output of the conveyer of the first radio unit or first Antenna of the input coupling of the receiver of radio unit to the first radio unit.In addition, radio system includes the second nothing Line electric unit comprising antenna and one of following: conveyer has the output for the antenna for being coupled to the second radio unit； Receiver has the input for the antenna for being coupled to the second radio unit；Or tool is selectively coupled to the second radio list The conveyer and tool of the output of the antenna of member are selectively coupled to the receiver of the input of the antenna of the second radio unit. Radio system has full duplex operating mode, and (wherein radio system is operated in same frequency channel while transmitting And receive) and half-duplex operating mode (wherein radio system is operated with enterprising in same frequency channel in different time Row transmission and reception).

In one embodiment, the second radio unit includes: conveyer；Receiver；Antenna；And switching circuit, it fits Together in by the input coupling of the output of the conveyer of the second radio unit or the receiver of the second radio unit to second The antenna of radio unit.In addition, in one embodiment, when operation is in full duplex operating mode, the first radio unit Conveyer be movable and the switching circuit of the first radio unit is by the output coupling of the conveyer of the first radio unit The antenna and the receiver of the second radio unit closed to the first radio unit is movable and the second radio unit Switching circuit by the input coupling of the receiver of the second radio unit to the antenna of the second radio unit.Further, In one embodiment, when operating transmission phase (phase) in half-duplex operating mode, the transmission of the first radio unit Device is movable and the switching circuit of the first radio unit is by the output coupling of the conveyer of the first radio unit to The conveyer of the antenna of one radio unit and the second radio unit is movable and the second radio unit switch Circuit is by the output coupling of the conveyer of the second radio unit to the antenna of the second radio unit.When operation is grasped in half-duplex When the receiving phase of operation mode, the receiver of the first radio unit is movable and the switching circuit of the first radio unit By the antenna of the input coupling of the receiver of the first radio unit to the first radio unit and the second radio unit Receiver is movable and the switching circuit of the second radio unit is by the input coupling of the receiver of the second radio unit To the antenna of the second radio unit.

In another embodiment, radio system includes first group of radio unit and second group of radio unit.The One group of radio unit includes the first radio unit and one or more additional first radio units.First group of radio list Each radio unit in member includes: conveyer；Receiver；Antenna；And switching circuit, it is suitable for first group of radio list The receiver of the output of the conveyer of radio unit in member or the radio unit in first group of radio unit it is defeated Enter to be coupled to the antenna of radio unit.Second group of radio unit includes the second radio unit and one or more additional the Two radio units.Each radio unit in second group of radio unit includes antenna and one of following: conveyer has It is coupled to the output of the antenna of the radio unit in second group of radio unit；Receiver, it is wireless with being coupled to second group The input of the antenna of radio unit in electric unit；Or tool be selectively coupled to it is wireless in second group of radio unit The conveyer and tool of the output of the antenna of electric unit are selectively coupled to the radio unit in second group of radio unit Antenna input receiver.In one embodiment, each radio unit in second group of radio unit includes receiving Device is but not including that conveyer.In another embodiment, each radio unit in second group of radio unit includes transmission Device is but not including that receiver.In yet another embodiment, each radio unit in second group of radio unit includes: transmission Device；Receiver；Antenna；And switching circuit, it is suitable for the conveyer of the radio unit in second group of radio unit The input coupling of the receiver of output or the radio unit in second group of radio unit is into second group of radio unit Radio unit antenna.

In addition, in the full-duplex mode of operation, for each radio unit in first group of radio unit, first group without The conveyer of radio unit in line electric unit is movable and radio unit in first group of radio unit is opened Powered-down road is by the output coupling of the conveyer of the radio unit in first group of radio unit into first group of radio unit Radio unit antenna.For each radio unit in second group of radio unit, in second group of radio unit The receiver of radio unit is movable and the switching circuit of the radio unit in second group of radio unit is by second The input coupling of the receiver of radio unit in group radio unit is to the radio unit in second group of radio unit Antenna.In one embodiment, when operating the transmission phase in half-duplex operating mode, for first group of radio unit In each radio unit, the conveyer of the radio unit in first group of radio unit is movable and first group is wireless The switching circuit of radio unit in electric unit is by the output of the conveyer of the radio unit in first group of radio unit It is coupled to the antenna of the radio unit in first group of radio unit.For each radio list in second group of radio unit The conveyer of member, the radio unit in second group of radio unit be movable and second group of radio unit in it is wireless The switching circuit of electric unit by the output coupling of the conveyer of the radio unit in second group of radio unit to second group without The antenna of radio unit in line electric unit.When operating receiving phase in half-duplex operating mode, for first group without The receiver of each radio unit in line electric unit, the radio unit in first group of radio unit is movable and The switching circuit of radio unit in one group of radio unit is by the reception of the radio unit in first group of radio unit Antenna of the input coupling of device to the radio unit in first group of radio unit.For each in second group of radio unit The receiver of radio unit, the radio unit in second group of radio unit is movable and second group of radio unit In the switching circuit of radio unit the input coupling of the receiver of the radio unit in second group of radio unit is arrived The antenna of radio unit in second group of radio unit.

In one embodiment, when operation in full duplex operating mode, one of first and second radio units Conveyer be idle, and be utilized to provide self-interference eliminate.In another embodiment, when operation is grasped in full duplex When operation mode, the receiver of one of first and second radio units is idle, and is utilized to provide self-interference It eliminates.

In one embodiment, the second radio unit include at least receiver and radio system configuration at via The receiver of each of first and second radio units receives the training sequence that wireless device is transmitted, and based on via The received trained sequence of receiver institute of each of radio unit in first group of radio unit and second group of radio unit Arrange the channel state information (CSI) to estimate the channel between wireless device and each antenna of the first and second radio units. In another embodiment, the second radio unit includes at least conveyer and radio system configuration at via the first He The conveyer of each of second radio unit is transmitted for the letter between radio system and one or more wireless device The training sequence of road estimation.

In one embodiment, the second radio unit includes: conveyer；Receiver；Antenna；And switching circuit, it fits Together in by the input coupling of the output of the conveyer of the second radio unit or the receiver of the second radio unit to second The antenna of radio unit.When operation is in full duplex operating mode, the first radio unit and the second radio unit have Different time division duplex (TDD) configurations.In one embodiment, different TDD configuration includes different TDD uplinks under Line link ratio.In another embodiment, different TDD configuration includes that different TDD transmission phases and different TDD are received Phase.In one embodiment, the different sets operated in the wireless device of TDD operation mode are connected to the first radio unit With the second radio unit.

In one embodiment, the TDD transmission phase of the first radio unit and the TDD of the second radio unit transmit phase The TDD receiving phase reverse phase of the TDD receiving phase and the second radio unit of bit Inverting and the first radio unit.

In one embodiment, when operation is in full duplex operating mode, in the first phase phase of full duplex operating mode Between, the conveyer of the first radio unit is movable and the switching circuit of the first radio unit is by the first radio unit Conveyer output coupling to the antenna of the first radio unit and the receiver of the second radio unit be it is movable simultaneously And second radio unit switching circuit by the input coupling of the receiver of the second radio unit to the second radio unit Antenna.During the second phase of full duplex operating mode, the receiver of the first radio unit is movable and first The switching circuit of radio unit by the input coupling of the receiver of the first radio unit to the antenna of the first radio unit, And second the conveyer of radio unit be movable and the switching circuit of the second radio unit is by the second radio list Antenna of the output coupling of the conveyer of member to the second radio unit.

In one embodiment, radio system further includes one or more extra cells, wherein the first radio unit, There is different TDD to configure for second radio unit and one or more additional radio units.In one embodiment, first The TDD of at least one of radio unit, the second radio unit and one or more additional radio units transmits phase At least another to partly overlap in the first radio unit, the second radio unit and one or more additional radio unit TDD receiving phase.

In one embodiment, wireless communication system is cellular communications networks and radio node is base station.

In one embodiment, wireless communication system is that cellular communications networks and radio node are attached to honeycomb and lead to The wireless device of communication network.

In one embodiment, the second radio unit includes receiver but not including that conveyer.In another implementation In example, the second radio unit includes conveyer but not including that receiver.

Read below in conjunction with attached drawing to the detailed description of embodiment after, it will be appreciated by those skilled in the art that this Scope of disclosure and recognize its additional aspect.

Detailed description of the invention

It is incorporated in the present specification and the attached drawing for constituting its component part shows several aspects of the disclosure, and together with retouching It states together for illustrating the principle of the disclosure.

It includes the honeycomb with the radio node of dual-mode wireless electric system that Fig. 1, which is shown according to one embodiment of the disclosure, One example of communication network；

Fig. 2 shows the dual-mode wireless electric systems with community antenna framework；

Fig. 3 A, Fig. 3 B and Fig. 3 C show the full duplex operating mode and half-duplex operating mode of the radio system of Fig. 2；

Fig. 4 shows the dual-mode wireless electric system with stand-alone antenna framework；

Fig. 5 A, Fig. 5 B and Fig. 5 C show the full duplex operating mode and half-duplex operating mode of the radio system of Fig. 4；

Fig. 6 shows the dual-mode wireless electric system according to one embodiment of the disclosure；

Fig. 7 A, Fig. 7 B and Fig. 7 C show the full duplex behaviour of the radio system of Fig. 6 of one embodiment according to the disclosure Operation mode and half-duplex operating mode；

Fig. 8 is the operation mode for showing the dual-mode wireless electric system of the control figure 6 according to one embodiment of the disclosure The flow chart of method；

Fig. 9 shows the channel estimation process of the dual-mode wireless electric system using Fig. 6 of one embodiment according to the disclosure One embodiment；

Figure 10 shows the channel estimation process of the dual-mode wireless electric system using Fig. 6 of one embodiment according to the disclosure Another embodiment；

Figure 11 show according to the disclosure one embodiment wherein idle conveyer is utilized during full-duplex operation In one embodiment of the dual-mode wireless electric system for Fig. 6 that self-interference is eliminated；

Figure 12 show according to the disclosure one embodiment wherein idle receiver is utilized during full-duplex operation In one embodiment of the dual-mode wireless electric system for Fig. 6 that self-interference is eliminated；

It only includes connecing that Figure 13, which is shown according to one of the wherein radio unit marshalling (group) of one embodiment of the disclosure, Receive one embodiment of the dual-mode wireless electric system of Fig. 6 of device；

It only includes conveyer that Figure 14, which is shown according to one of the wherein radio unit marshalling of one embodiment of the disclosure, One embodiment of the dual-mode wireless electric system of Fig. 6；

Figure 15 A to Figure 15 C and Figure 16 shows the dual-mode wireless electric system according to Fig. 6 of another embodiment of the disclosure Full-duplex operation；

Figure 17 shows an example of the radio frame of one embodiment according to the disclosure, and wherein radio system is not Mutual operated in anti-phase is organized into groups with radio unit；

Figure 18 show include according to radio system radio unit more than two another embodiment Fig. 6 bimodulus Radio system；

Figure 19 shows the different radio electric unit of the radio system of wherein Figure 18 of one embodiment according to the disclosure Organize into groups an example of the radio frame that there is different time division duplexs (TDD) to configure；

Figure 20 is the block diagram according to the base station of Fig. 1 of one embodiment of the disclosure；And

Figure 21 is the block diagram according to the wireless device of one embodiment of the disclosure.

Specific embodiment

Embodiments set forth below indicates to enable those skilled in the art to implement the information of embodiment, and shows reality Apply the optimal mode of embodiment.When reading is described below with reference to the accompanying drawings, it will be appreciated by those skilled in the art that the disclosure Concept, and will be recognized herein not specific to these concepts application.It should be understood that these concepts and application are fallen Enter within the scope of the disclosure and the accompanying claims.

Open system and method relevant to having the dual-mode wireless electric system of full-duplex mode and semiduplex mode.This Outside, when operation is in full-duplex mode, radio system provides the isolation between transmission and reception signal.In full-duplex radio In system, being isolated between reception signal and transmission signal can be using passive (passive) isolation and/or active (active) Self-interference is eliminated to realize.Many embodiments described herein relate generally to passively be isolated.It is understood that passive isolation It can be utilized to provide the expectation between transmission and reception signal together with known or exploitation in the future self-interference technology for eliminating Isolation Level.

In addition, embodiment described herein focuses on the radio system for the base station in cellular communications networks.Bee One example of nest communication network 10 is shown in FIG. 1.As shown, cellular communications networks 10 include serving cellular communications network The base station 12 of wireless device 14 in the respective cell 16 of network 10.In embodiment described herein, base station 12 is equipped with double Mould radio system (not shown) is operated when operation is in full-duplex mode to use same frequency resources (that is, identical Downlink and uplink frequency channel) simultaneously transmit and receive.Therefore, in other words, radio system is when operation is complete Downlink transmission and extended receiver while realizing cell 16 using same frequency resources when dual-mode.Although wireless Electric system is described mainly as realizing in base station 12, but radio system can be in any wireless communication of cellular communications networks 10 It is realized in node (such as other radio access nodes, wireless device 14 etc.).In addition, although description herein focuses on honeycomb Communication network 10, but embodiment described herein may be equally applied to wherein it is expected include the wireless of dual-mode wireless electric system Other wireless communication systems of node.

Before specifically describing embodiment of the disclosure, two basic frameworks and its related question of dual-mode wireless electric system To be briefly described be beneficial.In this respect, Fig. 2 shows include that (it is via circulation for conveyer (TX) 20 and receiver (RX) 22 Device 26 and filter 28 are coupled to community antenna 24) dual-mode wireless electric system 18.In this illustration, conveyer 20 is shown as wrapping Include digital analog converter (DAC) 30 and power amplifier (PA) 32.But as skilled in the art will recognize, it transmits Device 20 may include unshowned add-on assemble, for example, (one or more) filter, (one or more) frequency mixer (mixer), (one or more) modulator etc..Similarly, receiver 22 is shown as including low-noise amplifier (LNA) 34 and analog-digital converter (ADC)36.As skilled in the art will recognize, receiver 22 may include unshowned add-on assemble, such as such as (one or more) filter, (one or more) frequency mixer, (one or more) demodulator etc..

In operation, conveyer 20 receives digital input signals, and handles digital input signals and carried with providing in expectation The radio frequency (RF) of wave frequency rate transmits signal.RF transmission signal by circulator 26 and is transmitted to antenna through wave filter 28 24.Similarly, RF receives signal in antenna 24 to receive, and is transmitted to receiver through wave filter 28 and circulator 26 22.Receiver 22 handles RF and receives signal, to provide digital output signal.Notably, RF transmission signal and RF receive letter Number be in same carrier frequencies, or in other words using same frequency resources.As shown in fig. 3, for full-duplex operation, RF receive signal RF transmission signal by dual-mode wireless electric system 18 to transmit while be received.As shown in fig. 3 b and fig. 3 c , dual-mode wireless electric system 18 can pass through desirably time division duplex (TDD) allocation activation and deactivated conveyer 20 and reception Device 22 is returned to half-duplex operating mode.Specifically, during transmitting phase, conveyer 20 receives input signal, and It generates corresponding RF and transmits signal, then transmitted via antenna 24, as shown in Figure 3B.During transmitting phase, receive Device 22 is inactive.On the contrary, receiver 22 is movable during receiving phase, and operated to receive RF reception Signal, and corresponding digital output signal is generated, as shown in Figure 3C.During receiving phase, conveyer 20 is inactive 's.Beneficial with dual mode operation (that is, full and half duplex) because can it is expected for example, if in the presence of for bimodulus without The integrity problem that the self-interference of line electric system 18 eliminates subsystem (not shown) is then returned to half-duplex operating mode.If from The significant performance degradation of subsystem is eliminated in interference, then uplink capacity will reduce.

Fig. 4 shows the conveyer (TX) 40 including being coupled to stand-alone antenna 44 and 46 via respective filter 48 and 50 and connects Receive the dual-mode wireless electric system 38 of device (RX) 42.By being physically separated, stand-alone antenna 44 and 46 mentions during full-duplex operation For transmission signal and receive passive being isolated between signal.In this illustration, conveyer 40 is shown as including DAC 52 and PA 54.But as skilled in the art will recognize, conveyer 40 may include unshowned add-on assemble, such as (one or It is multiple) filter, (one or more) frequency mixer, (one or more) modulator etc..Similarly, receiver 42 be shown as include LNA 56 and ADC 58.As skilled in the art will recognize, receiver 42 may include unshowned add-on assemble, example Such as (one or more) filter, (one or more) frequency mixer, (one or more) demodulator.

In operation, conveyer 40 receives digital input signals, and handles digital input signals and carried with providing expected The RF of wave frequency rate transmits signal.RF transmits signal and is transmitted to antenna 44 (that is, transmitting antenna) through wave filter 48.Similarly, RF Signal is received in antenna 46 (that is, receiving antenna) to receive, and is transmitted to receiver 42 through wave filter 50.At receiver 42 It manages RF and receives signal, to provide digital output signal.Notably, RF transmission signal and RF, which receive signal, is in same carrier wave Frequency, or in other words using same frequency resources.As shown in Figure 5 A, for full-duplex operation, RF receives signal in RF Transmission signal is received while transmission by dual-mode wireless electric system 38.Specifically, RF transmits signal and receives signal in RF It is transmitted while reception via transmitting antenna 44 via receiving antenna 46.As is illustrated in figs. 5 b and 5 c, dual-mode radio System 38 can be returned to either-way operation mould by desirably TDD allocation activation and deactivated conveyer 40 and receiver 42 Formula.Specifically, during transmitting phase, conveyer 40 receives digital input signals, and generates corresponding RF transmission signal, Then it is transmitted via transmitting antenna 44, as shown in Figure 5 B.During transmitting phase, receiver 42 is inactive.Phase Instead, during receiving phase, receiver 42 is movable, and is operated to receive RF from receiving antenna 46 and receive signal, And corresponding digital output signal is generated, as shown in Figure 5 C.During receiving phase, conveyer 40 is inactive.

The community antenna framework of Fig. 2 and the stand-alone antenna framework of Fig. 4 are problematic.Specifically, such as with stand-alone antenna frame Structure is compared, and the community antenna framework of Fig. 2 causes the more more strict requirement eliminated to self-interference.By circulator 26 (or its His duplex apparatus) provided by passively isolation can be restricted to such as 20 decibels (dB), and if being located at circulator 26 There are certain impedance mismatchings in the filter 28 or antenna 24 of antenna side then even can be worse.In community antenna framework, from Interference eliminate subsystem (not shown) must eliminate the remaining conveyer in receiver 22 leakage, and be required to be more than 100 dB.If self-interference, which eliminates subsystem, can not consistently provide required elimination, dual-mode wireless electric system 18 will It needs to reply back either-way operation, to avoid making uplink capacity significantly degrade.Extremely strong self-interference elimination requirement will make can Degrade by property, thus potentially prevents dual-mode wireless electric system 18 from operating complete double considerable (appreciable) time quantum Work mode.

To the stand-alone antenna framework of Fig. 4, hence it is evident that more passive conveyer-receiver (TX-RX) isolation can be to conveyer 40 It is realized with receiver 42 using stand-alone antenna 44 and 46.This framework relaxes the elimination requirement that self-interference eliminates subsystem, by This keeps this dual-mode wireless electric system 38 more reliable, and full-duplex radio is perhaps made to be under the conditions of practical cellular network It is feasible.The problem of stand-alone antenna framework, is, stand-alone antenna 44 and 46 is needed for the reliable operation of full duplex；But Stand-alone antenna 44 and 46 is not needed for either-way operation.During either-way operation, only one in antenna 44 and 46 is in TX Be during RX phase it is movable, as is illustrated in figs. 5 b and 5 c.Available antenna aperture is used only during either-way operation If half cause than the capacity low using entire antenna aperature.

It is related to estimation channel state information (CSI) to another problem of the stand-alone antenna framework of Fig. 4.Many modern times bases It stands using active antenna technology and improves spectrum and/or energy efficiency.Each antenna and each nothing on active antenna technical requirements base station Downlink between each antenna and uplink channel on line apparatus (it can be referred to as user equipment (ue) device (UE) sometimes) Knowledge.This knowledge is referred to as CSI.CSI passes through transmission training sequence or signal (such as pilot signal) most commonly to obtain.More Specifically, conveyer transmits training sequence, is received again by the receiver on the other end of radio link.It is receiving Device, the received training sequence of institute are used to estimate channel response, because receiving radio has the training sequence transmitted to conveyer The perfect knowledge of column.If shared or community antenna is used to transmit and receive, channel is assumed to be reciprocity, and therefore only Trained or CSI estimation is required in one direction.But pass through stand-alone antenna framework, uplink channel and downlink channel It may require that independent estimations, thus eliminate the beneficial effect of channel reciprocity.The training in training and downlink in uplink Same amount of capacity is not consumed generally.Therefore, independent transmission and additional training needed for receiving antenna can dramatically increase expense, by This reduces capacity.

Fig. 6 shows the dual-mode wireless electric system for providing full and half duplex and operating of one embodiment according to the disclosure 60.As discussed in detail below, dual-mode wireless electric system 60 provides duplex operation by using independent transmission and receiving antenna The TX-RX of period is isolated, and avoids the unused antennas during either-way operation.As shown, dual-mode wireless electric system 60 Including two radio unit marshallings 62 and 64.First radio unit marshalling 62 includes multiple radio unit 66-1 to 66- N_G1(be commonly referred to collectively as multiple radio units 66 herein and be individually referred to as radio unit 66) and the second radio Unit marshalling 64 includes multiple radio unit 68-1 to 68-N_G2(it is commonly referred to collectively as multiple radio units 68 simultaneously herein And individually it is referred to as radio unit 68).Although N in the example shown_G1> 1 and N_G2> 1, but the first radio unit The quantity of radio unit 66 in marshalling 62 may be greater than or any quantity equal to 1 and the second radio unit are compiled The quantity of radio unit 68 in group 64 may be greater than or any quantity equal to 1.In addition, N_G1And N_G2It can or can With unequal, this depends on specific implementation.In addition, in one embodiment, two radio units organize into groups the nothing in 62 and 64 Line electric unit 66 and 68 serves same coverage area, and (for example, same cells 16, wherein dual-mode wireless electric system 60 is in base station 12 Middle realization).

In this illustration, the radio unit 66-1 to 66-N in the first radio unit marshalling 62_G1More specifically It is transceiver unit comprising conveyer (TX) 70-1 to 70-N_G1(it is commonly referred to collectively as multiple conveyers 70 and single herein Solely it is referred to as conveyer 70) and receiver (RX) 72-1 to 72-N_G1(herein be commonly referred to collectively as multiple receivers 72 and individually Referred to as receiver 72).Conveyer 70 and receiver 72 are respectively via switch 76-1 to 76-N_G1It is (commonly referred to collectively as more herein A switch 76 and be individually referred to as switch 76) and filter 78-1 to 78-N_G1(it is commonly referred to collectively as multiple filters 78 herein And individually it is referred to as filter 78) selectively it is coupled to respective antenna 74-1 to 74-N_G1(it is commonly referred to collectively as multiple days herein Line 74 and individually be referred to as antenna 74).In this illustration, conveyer 70 includes DAC 80-1 to 80-N_G1It is (general herein It is referred to as multiple DAC 80 and is individually referred to as DAC 80) and PA 82-1 to 82-N_G1(it is commonly referred to collectively as multiple PA 82 herein And individually it is referred to as PA 82).But as skilled in the art will recognize, conveyer 70 may include unshowned attached Add component, such as (one or more) filter, (one or more) frequency mixer, (one or more) modulator etc..It connects Receiving device 72 includes LNA 84-1 to 84-N_G1(collectively referred to herein as LNA 84 and individually referred to as LNA 84) and ADC 86-1 is extremely 86-N_G1(be commonly referred to collectively as multiple ADC 86 herein and be individually referred to as ADC 86).But such as those skilled in the art It will be realized that receiver 72 may include unshowned add-on assemble, for example, such as (one or more) filter, (one or It is multiple) frequency mixer, (one or more) demodulator etc..

In this illustration, the radio unit 68-1 to 68-N in the second radio unit marshalling 64_G2It is also transceiver Unit comprising conveyer (TX) 88-1 to 88-N_G2It (is commonly referred to collectively as multiple conveyers 88 herein and is individually referred to as to pass Send device 88) and receiver (RX) 90-1 to 90-N_G2It (is commonly referred to collectively as multiple receivers 90 herein and is individually referred to as to receive Device 90).Conveyer 88 and receiver 90 are respectively via switch 94-1 to 94-N_G2(it is commonly referred to collectively as multiple switch 94 herein And individually it is referred to as switch 94) and filter 96-1 to 96-N_G2(herein be commonly referred to collectively as multiple filters 96 and individually Referred to as filter 96) selectively it is coupled to respective antenna 92-1 to 92-N_G2(herein commonly referred to collectively as mutiple antennas 92 and Individually it is referred to as antenna 92).In this illustration, conveyer 88 includes DAC 98-1 to 98-N_G2It is (commonly referred to collectively as more herein A DAC 98 and individually referred to as DAC 98) and PA 100-1 to 100-N_G2(herein be commonly referred to collectively as multiple PA 100 and Individually it is referred to as PA 100).But as skilled in the art will recognize, conveyer 88 may include unshowned additional Component, such as (one or more) filter, (one or more) frequency mixer, (one or more) modulator etc..It receives Device 90 includes LNA 102-1 to 102-N_G2(collectively referred to herein as LNA 102 and individually referred to as LNA 102) and ADC 104- 1 to 104-N_G2(be commonly referred to collectively as multiple ADC 104 herein and be individually referred to as ADC 104).But such as the skill of this field Art personnel will be realized that receiver 90 may include unshowned add-on assemble, such as such as (one or more) filter, (one or more) frequency mixer, (one or more) demodulator etc..

Dual-mode wireless electric system 60 can be operated by the appropriately configured of switch 76 and 94 in full-duplex mode and half pair Work mode.Switch is controlled by controller 106.The part that can be dual-mode wireless electric system 60 as shown of controller 106, or Person can be outside dual-mode wireless electric system 60 (such as realizing in association Base Band Unit or radio controller).For example, Controller 106 can be by the software that is run in base station 12 or with associated (one or more) processor in base station 12 come real It is existing.In addition, the functionality of controller 106 can be across two or more network nodes (such as base station 12 and another network node) point Cloth.Controller 106 is realized by the combination of hardware, software or hardware and software.In one embodiment, controller 106 Functionality pass through the software that stores on computer-readable medium (for example, nonvolatile computer-readable medium, such as memory) (it is that processor (such as central processing unit (CPU)) is executable, to execute the functionality of controller 106) Lai Shixian.As institute Show, in this illustration, controller 106 exports first control signal (CNTRL₁) (it controls the marshalling of the first radio unit 62 switch 76) and the second output signal (CNTRL₂) (its switch 94 for controlling the second radio unit marshalling 64).

Fig. 7 A shows the full-duplex operation mould of the dual-mode wireless electric system 60 of Fig. 6 of one embodiment according to the disclosure Formula.In this embodiment, the first radio unit to be organized into groups the radio in 62 by controller 106 (Fig. 6) control switch 76 The conveyer 70 (rather than receiver 72) of unit 66 is coupled to respective antenna 74 and control switch 94 with by the second radio The receiver 90 (rather than conveyer 88) of radio unit 68 in unit marshalling 64 is coupled to respective antenna 92.In this way, making Dual-mode wireless electric system 60 is able to use same frequency resources simultaneously via the radio list in the first radio unit marshalling 62 Member 66 is transmitted and is received via the radio unit 68 in the second radio unit marshalling 64.Notably, In this respect, transmit and receive by same frequency resources carry out, and therefore the passband of filter 78 and 96 for transmission with It receives all the same.

When operation is in full-duplex mode, the transmission of the radio unit 66 in the first radio unit marshalling 62 exists Reception period causes self-interference 108 while second radio unit organizes into groups radio unit 68 in 64.As and community antenna Passively isolation is compared provided by duplex apparatus (such as circulator) in framework, is mentioned by being physically separated antenna 74 and 92 Passively isolation between the transmission and reception path of confession is larger.Passive isolation amount can be by increasing the object between antenna 74 and 92 Reason separates and/or by increasing known technology for reducing mutual coupling between antenna 74 and 92.Therefore, such as with public day Line architecture is compared, and the requirement that the self-interference in dual-mode wireless electric system 60 is eliminated is reduced.

Fig. 7 B and Fig. 7 C show the half-duplex behaviour of the dual-mode wireless electric system 60 of Fig. 6 of one embodiment according to the disclosure Make.As described above, if the performance degradation that such as self-interference eliminates subsystem, can it is expected either-way operation.Half-duplex behaviour Operation mode includes transmission phase (Fig. 7 B) and receiving phase (Fig. 7 C).In this illustration, in transmission phase, control switch 76 makes The conveyer 70 for obtaining the radio unit 66 in the first radio unit marshalling 62 is coupled to respective antenna 74 and control switch 94 control so that the conveyer 88 of the radio unit 68 in the second radio unit marshalling 64 is coupled to respective antenna 92.Together Sample, in receiving phase, control switch 76 makes the receiver 72 of the radio unit 66 in the first radio unit marshalling 62 It is coupled to respective antenna 74 and control switch 94 makes the reception of the radio unit 68 in the second radio unit marshalling 64 Device 90 is coupled to respective antenna 92.In this way, using all antennas 74 and 92 during transmission phase and receiving phase.It is such Words avoid the problem of wasting antenna, and compared with the stand-alone antenna framework of Fig. 4, more antennas is used for transmission and receives, this The capacity of downlink and uplink is improved respectively.Notably, there is no the (figures of self-interference 108 in semiduplex mode 6 and Fig. 7 A) because all radio units are transmitted (Fig. 7 B) or all radio units are received (figure 7C)。

Fig. 8 is the flow chart for showing the operation of controller 106 of Fig. 6 of one embodiment according to the disclosure.At this In example, controller 106 determines whether operation in full-duplex mode (step 1000).This determination can appoint about one or more What proper standard (such as such as, whether the performance of self-interference subsystem drops below threshold value) carries out.In addition, in some implementations In example, full duplex operating mode is default operating mode, wherein arriving the rollback of half-duplex operating mode in needs or with other sides It is available when formula expectation (such as measuring CSI).If it is desire to full-duplex operation, then in this embodiment, controller 106 Configuration dual-mode wireless electric system 60 makes the radio unit 66 in the first radio unit marshalling 62 respectively in transfer mode (that is, conveyer 70 is coupled to antenna 74 by switch 76), and the radio unit 68 in the second radio unit marshalling 64 is each (that is, receiver 90 is coupled to antenna 92 by switch 94) (step 1002) in a receive mode.When operation in full-duplex mode, Controller 106 periodically or otherwise can determine whether operation should be switched to semiduplex mode in some embodiments (step 1004).For example, as discussed below, it may be desirable to semiduplex mode is switched to CSI estimation.If controller 106 Determination does not switch to half-duplex operating mode, then full-duplex operation continues.

If it is expected either-way operation as determined by step 1000 or step 1004, controller 106 is configured Dual-mode wireless electric system 60 makes radio unit marshalling 62 and 64 be in transmission during the transmission phase of either-way operation Operation mode (step 1006).Then, during the receiving phase of either-way operation, controller 106 configures dual-mode radio system System 60 makes radio unit marshalling 62 and 64 be in reception operation mode (step 1008).In this illustration, controller 106 are then based on one or more any proper standards to determine whether to be switched to full-duplex mode (step 1010).But it wants Note that step 1010 determine can any desired point (such as periodically or otherwise) in the process carry out.? In this example, if dual-mode wireless electric system 60 will be maintained at semiduplex mode, which returns to step 1006.It is no Then, if dual-mode wireless electric system 60 will be switched to full-duplex mode, which proceeds to step 1002.Note that the mistake of Fig. 8 Journey is an example.Controller 106 can be operated to control dual-mode wireless electric system 60, according to any desired or appropriate ways To provide full-duplex operation and either-way operation.

As mentioned above, in some embodiments, dual-mode wireless electric system 60 controllably be made using uplink or under Line link training come provide the channel between all antennas 74 and 92 and individually each of wireless device 14 channel estimation (such as CSI estimation).Channel before this feature of description dual-mode wireless electric system 60, when to the stand-alone antenna framework for using Fig. 4 The brief description of estimation is beneficial.When using the stand-alone antenna framework of Fig. 4, transmitting antenna 44 and certain wireless devices 14 it Between channel (that is, downlink channel) must be estimated using downlink training process, wherein training sequence by bimodulus without Line electric system 38 is transmitted via antenna 44 and is received in wireless device 14.Wireless device 14 is then based on the received instruction of institute Practice sequence to estimate downlink channel.In addition, between wireless device 14 and the receiving antenna of dual-mode wireless electric system 38 46 Channel (that is, uplink channel) must estimate that wherein training sequence is by wireless device 14 using uplink training process To transmit and be received in dual-mode wireless electric system 38 via receiving antenna 46.Base station 12 is then based on the received trained sequence of institute Column carry out estimating uplink channel.Therefore, it is necessary to uplinks and downlink training process.In other words, due to dual-mode wireless Electric system 38 is transmitted and is received using stand-alone antenna 44 and 46, so uplink and downlink channel are not reciprocity , and therefore must independent estimations.In addition, if the sum of wireless device antenna is not the number for being nearly equal to antenna for base station Amount, then uplink or downlink training will consume the capacity more significantly more than another.

In contrast, the dual-mode wireless electric system 60 of Fig. 6 can be configured to utilize reciprocity during individual channel estimation procedure Channel provides channel estimation.More specifically, Fig. 9 shows the one of the channel estimation process of the dual-mode wireless electric system 60 of Fig. 6 A embodiment.In this embodiment, base station 12 and be more specifically that controller 106 configures dual-mode wireless electric system 60 At the receiving phase operated in half-duplex operating mode, so that two radio units organize into groups all radio lists in 62 and 64 66 and 68 operation of member is in reception pattern (step 1100).Wireless device 14 transmits training sequence (step 1102).Because bimodulus without Line electric system 60 operates the receiving phase in half-duplex operating mode, so training sequence connects via all antennas 74 and 92 It receives.Channel (such as CSI) between wireless device 14 and all antennas 74 and 92 of dual-mode wireless electric system 60 can be based on institute Received training sequence estimates (step 1104).Due to channel reciprocity, passed based on the uplink from wireless device 14 Defeated channel estimation generated may be equally applied to downlink and uplink channel.Therefore, estimated using individual channel Journey estimates the channel between all antennas 74 and 92 and wireless device 14 of dual-mode wireless electric system 60.

Figure 10 shows another embodiment of the channel estimation process of the dual-mode wireless electric system 60 of Fig. 6.In this implementation In example, base station 12 and to be more specifically controller 106 configure dual-mode wireless electric system 60 in half-duplex operating mode Transmit phase (step 1200).Then training sequence (step 1202) is transmitted via dual-mode wireless electric system 60 in base station 12.Because Dual-mode wireless electric system 60 configures the transmission phase in half-duplex operating mode, so training sequence is via two radio units 62 and 64 all antennas 74 and 92 are organized into groups to transmit.Wireless device 14 then can be based on the correspondence from dual-mode wireless electric system 60 Antenna 74 and 92 the different of received training sequence receive versions to estimate 74 He of all antennas of dual-mode wireless electric system 60 Channel (such as CSI) (step 1204) between 92 and wireless device 14.

In this illustration, the dual-mode wireless electric system 60 of base station 12 then configured in semiduplex mode receiving phase or Full-duplex mode (step 1206).When dual-mode wireless electric system 60 is in the receiving phase or full-duplex mode of semiduplex mode When, wireless device 14 transmits the CSI of the channel between wireless device 14 and the different antennae 74 and 92 of dual-mode wireless electric system 60 (step 1208).Due to channel reciprocity, based on the downlink transmission channel generated from dual-mode wireless electric system 60 Estimation may be equally applied to downlink and uplink channel.Therefore, using individual channel estimation procedure, estimate dual-mode wireless Channel between all antennas 74 and 92 and wireless device 14 of electric system 60.

As discussed above and as specifically shown in Fig. 7 A, in the full-duplex mode of operation, receiver 72 and 90 A part is idle and a part of conveyer 70 and 88 is idle.Specifically, in the example of Fig. 7 A, complete Duplex operating mode, the first radio unit organizes into groups the receiver 72 of the radio unit 66 in 62 and the second radio unit is compiled The conveyer 88 of radio unit 68 in group 64 is idle.In some embodiments, idle receiver or idle conveyer It can be used in self-interference elimination.More specifically, Figure 11 show according to the disclosure one embodiment by the second radio list One example of the framework that the idle conveyer 88 of the radio unit 68 in member marshalling 64 is eliminated for self-interference.In this reality It applies in example, during full-duplex operation, the number of the conveyer 70 of the radio unit 66 in the first radio unit marshalling 62 Input signal is handled by signal processing subsystem 110, and the radio being then injected into the second radio unit marshalling 64 The input of the idle conveyer 88 of unit 68, to eliminate signal in the output of idle conveyer 88 to provide corresponding self-interference. In this illustration, 106 control switch 112-1 to 112-N of controller_G2(herein commonly referred to collectively as multiple switch 112 and Individually be referred to as switch 112), so as to by the output coupling of idle conveyer 88 to correspondence summing junction 114-1 to 114-N_G2(at this In text be commonly referred to collectively as multiple summing junctions 114 and individually be referred to as summing junction 114) input.Summing junction 114 is grasped Make so as to the receptions signal from antenna 92 and the self-interference from conveyer 88 elimination signal sum, to provide warp The reception signal of compensation.Compensated reception signal is handled by receiver 90, to provide the correspondence output signal of receiver 90. Note that any known or exploitation in the future technology, which can be used to calibrate self-interference by signal processing subsystem 110, eliminates signal, make It is minimum or sufficiently mitigation derived from interference.In " the Full-Duplex Wireless of M. Duarte et al. Communications Using Off-The-Shelf Radios: Feasibility and First Results” (2010 have OFF signal, system, computer the 44th Asilomar meeting minutes (2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers), 7-10 days in November, 2010,1558-1562 pages of Pacific Grove, CA, the) one example of middle description.

Figure 12 shows the radio unit organized into groups the first radio unit in 62 of one embodiment according to the disclosure One example of the framework that 66 idle receiver 72 is eliminated for self-interference.In this embodiment, in the full-duplex operation phase Between, the RF transmission signal exported by the conveyer 70 of the radio unit 66 in the first radio unit marshalling 62 is via correspondence Tap (tapping) element 116-1 to 116-N_G1(it is commonly referred to collectively as multiple tap elements 116 herein and is individually referred to as Tap element 116) and switch 118-1 to 118-N_G1It (is commonly referred to collectively as multiple switch 118 herein and is individually referred to as to switch 118) come the input of the idle receiver 72 for the radio unit 66 being coupled in the first radio unit marshalling 62.In a reality It applies in example, directional coupler is used to tap the output of conveyer 70, and tap element 116 is to can be used to reduce tapped off signal (if desired) attenuator of power stage.The produced output signal of idle receiver 72 is by signal processing subsystem 110 are handled, and eliminate signal to provide self-interference.Summing junction 120-1 to 120-N_G2(it is commonly referred to collectively as multiple ask herein With node 120 and individually it is referred to as summing junction 120) combination self-interference eliminates in signal and the second radio unit marshalling 64 The output signal of the receiver 90 of radio unit 68, to provide compensation output signal.Note that any known or exploitation in the future Technology can be used to calibrate self-interference by signal processing subsystem 110 and eliminate signal so that self-interference is minimum or sufficiently subtracts Gently.One example is described in United States Patent (USP) No. 8,199,681.

In the above-described embodiments, the radio unit 66 in the first radio unit marshalling 62 and the second radio unit are compiled Radio unit 68 in group 64 be entirely transceiver unit (that is, all of which include conveyer 70,88 and receiver 72, 90).But this dual-mode wireless electric system 60 is not limited thereto.In other embodiments, radio unit marshalling 62 and 64 its One of radio unit 66,68 can only include conveyer 70,88 or only include receiver 72,90.In this respect, scheme 13 show one embodiment of dual-mode wireless electric system 60, wherein the radio unit 68 of the second radio unit marshalling 64 only wraps Include receiver 90.In this embodiment, in full-duplex mode, the radio unit 66 of the first radio unit marshalling 62 is configured In transfer mode (being coupled to antenna 74 at by conveyer 70 that is, controlling switch 76) and the second radio unit marshalling 64 The receiver 90 of radio unit 68 be movable.On the contrary, in the transmission phase of half-duplex operating mode, the first radio The configuration of radio unit 66 of unit marshalling 62 is in transfer mode and the radio unit 68 of the second radio unit marshalling 64 Receiver 90 be inactive either idle.In the receiving phase of half-duplex operating mode, in one example, first The radio unit 66 of radio unit marshalling 62 configures in a receive mode, and in some embodiments, the second radio The receiver 90 of radio unit 68 in unit marshalling 64 is movable.

Figure 14 shows another embodiment of dual-mode wireless electric system 60, wherein the second radio unit marshalling 64 is wireless Electric unit 68 only includes conveyer 88.In this embodiment, in full-duplex mode, the first radio unit marshalling 62 it is wireless Electric unit 66, which configures, (is coupled to antenna 74 at by receiver 72 that is, controlling switch 76) and the second nothing in a receive mode The conveyer 88 of the radio unit 68 of line electric unit marshalling 64 is movable.On the contrary, in the transmission phase of half-duplex operating mode In position, the radio unit 66 of the first radio unit marshalling 62 is configured in transfer mode, and in some embodiments, the The conveyer 88 of the radio unit 68 of two radio units marshalling 64 is movable.In the receiving phase of half-duplex operating mode In, the configuration of radio unit 66 of the first radio unit marshalling 62 is in reception pattern and the second radio unit marshalling 64 The conveyer 88 of radio unit 68 be inactive either idle.

Above-described embodiment, especially Fig. 6 to those of Figure 12 embodiment, which describe full duplex framework, (to be had for transmitting and connecing Stand-alone antenna 74 and 92 and each antenna 74, the 92 subsequent transceivers of receipts).When dual-mode wireless electric system 60 is operated in full duplex When operation mode, the wireless device 14 for being connected to base station 12 can also be operated in full duplex operating mode, but can alternatively be grasped Make in half-duplex or TDD operation mode.In any case, wireless device 14 is connected to one of the antenna 74 for downlink Another set of a set and the antenna 92 for uplink.As discussed above, the CSI estimation of above-described embodiment can Uplink and downlink are executed and configuring dual-mode wireless electric system 60 in half-duplex operating mode.Due to letter Road reciprocity, only one direction need to estimate between dual-mode wireless electric system 60 and each wireless device 14.One problem It is, CSI needs to estimate between each of antenna of each of antenna 74 and 92 and wireless device 14.Channel reciprocity without Method is used to reduce the quantity of CSI estimation, because uplink and downlink do not share public day in full-duplex mode Line.It means that each wireless device needs N × K CSI estimation, wherein N=N_G1 + N_G2And K is wireless device 14 Antenna quantity.In some embodiments, if wireless device 14 is connected to the antenna for uplink and downlink 74,92 identical set enables channel reciprocity to be used to halve the quantity of required channel or CSI estimation, then can be It is advantageous.But if stand-alone antenna is used for transmission and reception in base station 12, the full-duplex operation in base station 12 will more may be used It leans on.

In this respect, Figure 15 A to Figure 15 C and Figure 16 shows the dual-mode radio system according to another embodiment of the disclosure The full duplex operating mode of system 60.In this embodiment, in the full-duplex mode of operation, the first radio unit organizes into groups 62 Hes Second radio unit marshalling, 64 operation in half-duplex or TDD operation mode but mutual reverse phase.As it is used herein, when the Radio unit 68 of the radio unit 66 in the second radio unit marshalling 64 in one radio unit marshalling 62 carries out When being transmitted while reception (and vice versa), two radio units organize into groups 62 and 64 mutual operated in anti-phase.Nothing Line electric unit marshalling 62 and 64 is individually operated in half-duplex or TDD operation mode；But radio unit marshalling 62 and 64 is common The full duplex operating mode of dual-mode wireless electric system 60 is provided.Radio unit organizes into groups the reverse phase TDD radio list in 62 and 64 Member 66 and 68 enables two radio unit marshallings 62 and 64 substantially to operate in an independent way, for example to serve The different sets of TDD wireless device.

As shown in Figure 15 A and Figure 16, when the operation of dual-mode wireless electric system 60 is in full-duplex mode, operation is in TDD First group of wireless device 122-1 to 122-N of mode_TDD1(herein be commonly referred to collectively as multiple wireless devices 122 and individually Referred to as wireless device 122) the first radio unit marshalling 62 is connected to for uplink and downlink.Equally, operation exists Second group of wireless device 124-1 to 124-N of tdd mode_TDD2(herein be commonly referred to collectively as multiple wireless devices 124 and Individually it is referred to as wireless device 124) the second radio unit marshalling 64 is connected to for uplink and downlink.This is beneficial , since it is desired that being to work as to be used to transmit by different antennae to the quantity of channel estimated by any certain wireless devices 122,124 The half for the quantity estimated with needs when reception is as many.It reduces and the quantity for the channel estimated is needed to reduce computation complexity (example Such as, reduce the size of multi-user's multiple-input and multiple-output (MU-MIMO) or space division multiple access (SDMA) pre-coding matrix).

As shown in Figure 15 B, the wireless device 122 for being connected to the first radio unit marshalling 62 includes conveyer 126- 1 to 126-N_TDD1(be commonly referred to collectively as multiple conveyers 126 herein and be individually referred to as conveyer 126) and receiver 128- 1 to 128-N_TDD1(be commonly referred to collectively as multiple receivers 128 herein and be individually referred to as receiver 128), via switch 132-1 to 132-N_TDD1(be commonly referred to collectively as multiple switch 132 herein and be individually referred to as switch 132) and filter 134- 1 to 134-N_TDD1(be commonly referred to collectively as multiple filters 134 herein and be individually referred to as filter 134) is selectively coupled to Respective antenna 130-1 to 130-N_TDD1(be commonly referred to collectively as mutiple antennas 130 herein and be individually referred to as antenna 130).? In this example, conveyer 126 respectively includes DAC 136-1 to 136-N_TDD1(it is commonly referred to collectively as multiple DAC 136 herein And individually it is referred to as DAC 136) and PA 138-1 to 138-N_TDD1(it is commonly referred to collectively as multiple PA 138 herein and individually claims Make PA 138).But conveyer 126 may include additionally or alternatively component, when reading the disclosure such as those skilled in the art It will be understood that.Similarly, receiver 128 respectively includes LNA 140-1 to 140-N in this illustration_TDD1(system herein Referred to as LNA 140 and individually referred to as LNA 140) and ADC 142-1 to 142-N_TDD1It is (commonly referred to collectively as multiple herein ADC 142 and individually referred to as ADC 142).But receiver 128 may include additionally or alternatively component, such as the technology of this field Personnel will be understood that when reading the disclosure.

Similarly, as shown in Figure 15 C, the wireless device 124 for being connected to the second radio unit marshalling 64 includes passing Send device 144-1 to 144-N_TDD2It (be commonly referred to collectively as multiple conveyers 144 herein and be individually referred to as conveyer 144) and connects Receive device 146-1 to 146-N_TDD2(be commonly referred to collectively as multiple receivers 146 herein and be individually referred to as receiver 146), Via switch 150-1 to 150-N_TDD2(be commonly referred to collectively as multiple switch 150 herein and be individually referred to as switch 150) and filter Wave device 152-1 to 152-N_TDD2(be commonly referred to collectively as multiple filters 152 herein and be individually referred to as filter 152) selection It is coupled to respective antenna 148-1 to 148-N in ground_TDD2(it is commonly referred to collectively as mutiple antennas 148 herein and is individually referred to as antenna 148).In this illustration, conveyer 144 respectively includes DAC 154-1 to 154-N_TDD2It is (commonly referred to collectively as multiple herein DAC 154 and individually referred to as DAC 154) and PA 156-1 to 156-N_TDD2(it is commonly referred to collectively as multiple PA 156 simultaneously herein And individually it is referred to as PA 156).But conveyer 144 may include additionally or alternatively component, as those skilled in the art is reading It will be understood that when the disclosure.Similarly, receiver 146 respectively includes LNA 158-1 to 158-N in this illustration_TDD2( Referred to herein, generally, as LNA 158 and individually referred to as LNA 158) and ADC 160-1 to 160-N_TDD2It is (general herein to be referred to as For multiple ADC 160 and individually it is referred to as ADC 160).But receiver 146 may include additionally or alternatively component, such as this field Technical staff will be understood that when reading the disclosure.

In operation, the radio list during the first phase of full-duplex operation, in the first radio unit marshalling 62 Radio unit 68 of 66 configuration of member in transfer mode and in the second radio unit marshalling 64 is configured in reception pattern In, as shown in figure 15 a.Therefore, the operation of wireless device 122 for being connected to 62 (Figure 15 B) of the first radio unit marshalling exists Receiving phase, and be connected to the second radio unit and organize into groups the operation of wireless device 124 of 64 (Figure 15 C) in transmission phase.So Afterwards, as shown in Figure 16, during second phase, the configuration of radio unit 66 in the first radio unit marshalling 62 is being connect Radio unit 68 in receipts mode and the second radio unit marshalling 64 is configured in transfer mode.Therefore, it is connected to first The operation of wireless device 122 of radio unit marshalling 62 is in transmission phase, and is connected to the second radio unit marshalling 64 Wireless device 124 is operated in receiving phase.Radio unit marshalling 62 and 64 between two phases of full-duplex operation simultaneously Transformation, but mutual reverse phase.In this way, there is radio unit marshalling 62,64 always, one of them is transmitted and radio One of unit marshalling 62,64 is received.Although it is not shown, radio unit marshalling 62 and 64 can be configured to together Mutually rather than operated in anti-phase, to provide the half-duplex operating mode of dual-mode wireless electric system 60.

Notably, mutually reverse phase indicates that two radio units organize into groups 62 and 64 TDD downlink to uplink Road (DL:UL) ratio will be opposite each other.For example, if the first radio unit marshalling 62 DL:UL ratio be 2:1, second The DL:UL ratio of radio unit marshalling 64 will be 1:2.As another example, if radio unit marshalling 62 has band Have the tdd frame of 90% downlink and 10% uplink, then need radio unit marshalling 64 have with 10% downlink and The operated in anti-phase of the tdd frame of 90% uplink.As conventional TDD radio system, protection interval be may be present in from transmission To reception and between the transformation for receiving transmission.These protection intervals are same between two radio unit marshallings 62 and 64 Step.

At one in the specific implementation, two radio units organize into groups 62 and 64 DL:UL ratios (that is, 1:1) having the same, It indicates that two radio units organize into groups 62 and 64 transmission phases and receiving phase with equivalent again.In this case, exist In some embodiments, base station 12 can only activate one of two radio unit marshallings 62,64 in half-duplex or tdd mode, And just two radio units is activated to organize into groups the another of 62,64 (its operated in anti-phase) when needing or in addition it is expected overhead provision One.But but when operation is in semiduplex mode, do not need to close or deactivate two radio units marshalling 62,64 its One of.But radio unit marshalling 62 and 64 can mutual operated in anti-phase, thus to increase by base station 12 in half-duplex The quantity of antenna used in mode.

Two radio units organize into groups 62 and 64 unequal TDD DL:UL ratio can be it is beneficial, to make specific nothing The radio unit that line apparatus 14 can be assigned to the TDD DL:UL ratio with the most demand of close match wireless device 14 is compiled Group 62,64.For example, if the first radio unit marshalling 62 has the TDD DL:UL ratio of 9:1, and the second radio list The 64 TDD DL:UL ratio with 1:9 of member marshalling, the then certain wireless devices 14 for downloading streamcast video can be assigned to first wirelessly Electric unit marshalling 62 (that is, becoming one of the wireless device 122 for being connected to (one or more) first radio unit marshalling 62), And the certain wireless devices 14 of uploading pictures can be assigned to the second radio unit marshalling 64 and (be connected to second wirelessly that is, becoming One of the wireless device 124 of electric unit marshalling 64).In some embodiments, base station 12 is operable to based on the wireless device 14 dynamic change demand switching at runtime certain wireless devices 14 between two radio unit marshallings 62 and 64.Note that It is contemplated that between other standards, such as such as wireless device when wireless device 14 is assigned to two radio unit marshallings 62 and 64 Interference.Mutual meeting or really strongly disturbing wireless device 14 can not be assigned to same wireless electric unit marshalling 62,64.

Figure 17 is shown with uplink shown in organizing into groups 62 and 64 to two radio units and downlink subframe One example of tdd frame.This example tdd frame shows the operated in anti-phase that two radio units organize into groups 62 and 64.Show at this In example, the radio unit 66 in subframe 0 to 5, the first radio unit marshalling 62 is transmitted and the second radio list Radio unit 68 in member marshalling 64 is received.This corresponds to full duplex phase shown in Figure 15 A.In contrast, exist Subframe 6-9, the radio unit 66 that the first radio unit organizes into groups in 62 is received and the second radio unit marshalling 64 In radio unit 68 be transmitted.This corresponds to full duplex phase shown in Figure 16.

In the embodiment of Figure 15 A and Figure 16, the downlink and uplink channel of certain wireless devices 122,124 are gone 62,64 antenna 74,92 is organized into groups toward same wireless electric unit.Therefore, CSI only needs to be based on channel reciprocity in one direction simultaneously And only for radio unit organize into groups 62,64 antenna 74,92(wireless device 122,124 is connected thereto) estimate.In addition, even It is connected to the multi-user interference (for MU-MIMO, SDMA etc.) of the wireless device of different radio electric unit marshalling 62,64 in time It is orthogonal (not including that wireless device is interfered to wireless device), this indicates the precoding and inspection of the first radio unit marshalling 62 It surveys matrix and is not necessarily to include the channel for going to the wireless device 124 connecting with the second radio unit marshalling 64.This is substantially reduced pre- The size of coding and detection matrix, this indicates the computation complexity for reducing matrix operation.

In the embodiment of Figure 15 A, Figure 16 and Figure 17, there is only two radio unit marshallings 62 and 64.But bimodulus Radio system 60 may include more than two radio units marshalling as shown in Figure 18 in some embodiments.It is specific next Say, it is as shown in Figure 18, dual-mode wireless electric system 60 include the first and second radio units organize into groups 62,64 and one or Multiple additional radio unit marshallings 162.In one embodiment, the first and second radio units marshalling 62,64 and one A or multiple additional radio unit marshallings 162 all serve same coverage area (such as cell).It is as shown, one or Each of multiple additional radio unit marshallings 162 include multiple radio unit 164-1 to 164-N_GX(general system herein Referred to as multiple radio units 164 and individually be referred to as radio unit 164).In this embodiment, additional radio unit Each of radio unit 164 in marshalling 162 is more specifically transceiver unit comprising conveyer (TX) 166-1 is extremely 166-N_GX(be commonly referred to collectively as multiple conveyers 166 herein and be individually referred to as conveyer 166) and receiver (RX) 168-1 To 168-N_GX(be commonly referred to collectively as multiple receivers 168 herein and be individually referred to as receiver 168).It conveyer 166 and connects Device 168 is received respectively via switch 172-1 to 172-N_GXIt (is commonly referred to collectively as multiple switch 172 herein and is individually referred to as to open 172) and filter 174-1 to 174-N it closes_GX(it is commonly referred to collectively as multiple filters 174 herein and is individually referred to as filter 174) selectively it is coupled to respective antenna 170-1 to 170-N_GX(it is commonly referred to collectively as mutiple antennas 170 herein and individually claims Make antenna 170).In this illustration, conveyer 166 includes DAC 176-1 to 176-N_GXIt is (commonly referred to collectively as multiple herein DAC 176 and individually referred to as DAC 176) and PA 178-1 to 178-N_GX(herein be commonly referred to collectively as multiple PA 178 and Individually it is referred to as PA 178).But as skilled in the art will recognize, conveyer 166 may include unshowned additional Component, such as (one or more) filter, (one or more) frequency mixer, (one or more) modulator etc..It receives Device 168 includes LNA 180-1 to 180-N_GX(collectively referred to herein as LNA 180 and individually referred to as LNA 180) and ADC 182-1 to 182-N_GX(be commonly referred to collectively as multiple ADC 182 herein and be individually referred to as ADC 182).But such as this field Technical staff will be realized that receiver 168 may include unshowned add-on assemble, such as such as (one or more) filter Device, (one or more) frequency mixer, (one or more) demodulator etc..

As shown, for full-duplex operation, each operation that radio unit organizes into groups 62,64 and 162 operates mould in TDD Formula.At any time, the one or more that radio unit organizes into groups 62,64 and 162 is at transfer mode, and radio list The one or more of member marshalling 62,64 and 162 is at reception pattern.In general, radio unit organizes into groups 62,64 and Each of 162 TDD with their own configure (such as TDD DL:UL ratio, duty ratio etc.).In other words, radio unit is compiled There is group 62,64 and 162 independent TDD to configure.In addition, being configured using its TDD, radio unit marshalling 62, which is served, to be connected to The wireless device 122 of first radio unit marshalling 62 is for TDD communication (that is, for downlink and uplink), nothing Line electric unit marshalling 64 serve be connected to the first radio unit marshalling 64 wireless device 124 with for TDD communication (that is, For downlink and uplink) and the marshalling of each additional radio unit 162 serve wireless device 184-1 to 184- N_TDDXThe additional aggregates of (be commonly referred to collectively as multiple wireless devices 184 herein and be individually referred to as wireless device 184).

In one embodiment, radio unit is organized into groups 62,64 and 162 and is configured with different TDD, and can have weight Folded transmission and/or receiving phase.For example, Figure 19 shows an example of frame structure, the frame structure shows three radio lists The transmission of member marshalling 62,64 and 162 and receiving phase.As shown, in this illustration, 62 (marshalling of radio unit marshalling 1) having transmission phase or downlink phase (it corresponds to subframe 0 to 6) and receiving phase or uplink UL phase, (it is corresponded to In subframe 7 to 9).Radio unit marshalling 64 (marshalling 2) have receiving phase or uplink UL phase (its correspond to subframe 0 to 4) have with transmission phase or downlink phase (it corresponds to subframe 5 to 9) and radio unit marshalling 162 (marshalling 3) (it corresponds to subframe for receiving phase or uplink UL phase (it corresponds to subframe 0 to 5) and transmission phase or downlink phase 6 to 9).Therefore, three radio unit marshallings 62,64 and 162 have different TDD DL:UL ratios.

Notably, there are several subframes, with different radio electric unit marshalling 62,64 in the example of Figure 19 And overlapping downlink or uplink UL phase between 162.As an example, in subframe 0, the second radio unit marshalling 62 (marshalling 2) and additional radio unit marshalling 162 (marshalling 3) operation is in uplink mode.Another example is in 6 phase of subframe Between, wherein 62,64 and 162 operation of all radio units marshalling is in downlink mode, this indicates base station 12 during subframe 6 It is not operate in full duplex.Downlink subframe with overlapping downlink phase can carry out precoding across multiple marshallings, with Just make multiple access interference for minimum.Similarly, with overlapping uplink phase uplink subframe can according to it is more User detects similar mode to execute the detection across multiple marshallings.In uplink and the simultaneous son of downlink transmission In frame, (one or more) self-interference mitigation technique can be used to reduce self-interference.

Similar mode, radio are discussed according to the embodiment above in relation to Figure 15 A, Figure 15 B, Figure 15 C and Figure 16 The different TDD configuration that unit organizes into groups 62,64 and 162 can be used to serve the nothing with different uplinks and downlink demand Line apparatus 122,124 and 184.For example, being assigned to the wireless device of the first radio unit marshalling 62 using the example of Figure 18 122 can be the wireless device (such as wireless device of streamcast video or other media contents) with high downlink demand, The wireless device 124 for being assigned to the second radio unit marshalling 64 can be with balance downlink and uplink demand Wireless device, and be assigned to additional radio unit marshalling 162 wireless device 184 can be with high uplink demand Wireless device (for example, upload content, such as such as photo wireless device).In addition, wireless device 122,124 and 184 exists In some embodiments can dynamic uplink based on wireless device 122,124 and 184 and downlink demand in radio list Switching at runtime between member marshalling 62,64 and 162.

Although base station 12 (either any kind of cellular access node) can pass through times of hardware or hardware and/or software What combination is to realize, but Figure 20 is the block diagram according to one of the base station 12 of Fig. 1 of one embodiment of the disclosure.Note Meaning, although base station discussed herein 12, the functionality of base station 12 described herein can by any kind of honeycomb without Line be electrically accessed node (such as wireless access network (RAN) node, base station, enhancing node B (eNB), radio network controller (RNC) etc.) Lai Zhihang.As shown, base station 12 includes: Base Band Unit 186 comprising processor 188, memory 190 and net Network interface 192；And dual-mode wireless electric system 60.In one embodiment, functional portion of base station 12 described herein Point (such as functionality of controller 106) in memory 190 by storing and carrying out reality by the software that processor 188 is run It is existing.In addition, base station 12 may include add-on assemble, be responsible for providing additional functional, including it is above-mentioned it is functional any one and/or Any functionality needed for supporting embodiment described herein.

In one embodiment, a kind of computer program including instruction is provided, instruction is running at least one processing At least one processor is set to execute either one or two of the embodiment of above-mentioned base station 12 when device.In one embodiment, a kind of packet is provided Carrier containing computer program, wherein carrier is electronic signal, optical signal, radio signal or computer readable storage medium One of (such as nonvolatile computer-readable medium).

Although wireless device 14,122,124 and 184 can pass through any group of any kind of hardware or hardware and software It closes to realize, but Figure 21 is the block diagram according to the wireless device 194 of one embodiment of the disclosure.As shown, without traditional thread binding Setting 194 includes processor 196, memory 198 and the transceiver 200 for being coupled to one or more antennas 202.It is being embodied In example, functional it can partly or entirely pass through processor 196 as above-mentioned as provided by wireless device 14,122,124 or 184 (its instruction for running computer-readable medium, storing on such as memory 198) provides.The alternative implementation of wireless device 194 Example may include be responsible for providing include it is identified above it is functional any one and/or support needed for embodiments described above Any functional additional functional add-on assemble.

In one embodiment, a kind of computer program including instruction is provided, instruction is transported on at least one processor At least one processor is set to execute either one or two of the embodiment of above-mentioned wireless device 194 when row.In one embodiment, one is provided Kind includes the carrier of computer program, and wherein carrier is electronic signal, optical signal, radio signal or computer-readable storage medium One of matter (such as nonvolatile computer-readable medium).

Use following initial in the whole text in the disclosure.

● ADC analog-digital converter

● dB decibels

● CPU central processing unit

● CSI channel state information

● DAC analog-digital converter

● DL:UL downlink to uplink

● eNB enhances node B

● FDD frequency division duplex

● LNA low-noise amplifier

● MU-MIMO multi-user's multiple-input and multiple-output

● PA power amplifier

● RAN radio access network

● RF radio frequency

● RNC radio network controller

● RX receiver

● SDMA space division multiple access

● TDD time division duplex

● TX conveyer

● UE user equipment

Those skilled in the art will recognize that improvement and modification to embodiment of the disclosure.It is all such to improve and repair Change and is all considered within concepts disclosed herein and the scope of the following claims.

Claims

1. radio system (60) of the one kind for the radio node (12,14) in wireless communication system (10), comprising:

● the first radio unit (66), comprising:

Conveyer (70)；

Receiver (72)；

Antenna (74)；And

Switching circuit (76) is suitable for the output of the conveyer (70) of first radio unit (66) or institute The input coupling of the receiver (72) of the first radio unit (66) is stated to the described of first radio unit (66) Antenna (74)；

● the second radio unit (68), comprising:

Antenna (92)；

One of following: conveyer (88) has the defeated of the antenna (92) for being coupled to second radio unit (68) Out；Receiver (90) has the input for the antenna (92) for being coupled to second radio unit (68)；And there is choosing It is coupled to the conveyer (88) of the output of the antenna (92) of second radio unit (68) with selecting and has selectively It is coupled to both receivers (90) of the input of the antenna (92) of second radio unit (68)；And

Controller (106),

Wherein the radio system (60) has full duplex operating mode and half-duplex operating mode, grasps in the full duplex Radio system described in operation mode (60) is operated in same frequency channel while transmitting and receiving, at described half pair Radio system described in work operation mode (60) is operated to transmit and receive in same frequency channel in different time, And

Wherein the controller (106) is suitable for whether having dropped below threshold value based on the performance that self-interference is eliminated to determine It states radio system (60) and operates in full-duplex mode or semiduplex mode.

2. radio system (60) as described in claim 1, wherein second radio unit (68) includes:

The conveyer (88)；

The receiver (90)；

The antenna (92)；And

Switching circuit (94) is suitable for the output of the conveyer (88) of second radio unit (68) or described The input coupling of the receiver (90) of second radio unit (68) is to the day of second radio unit (68) Line (92).

3. radio system (60) as claimed in claim 2, wherein when operation is in the full duplex operating mode:

The conveyer (70) of first radio unit (66) is movable, and first radio unit (66) The switching circuit (76) by the output coupling of the conveyer (70) of first radio unit (66) to institute State the antenna (74) of the first radio unit (66)；And

The receiver (90) of second radio unit (68) is movable, and second radio unit (68) The switching circuit (94) by the input coupling of the receiver (90) of second radio unit (68) to institute State the antenna (92) of the second radio unit (68).

4. radio system (60) as claimed in claim 3, in which:

● when operating the transmission phase in the half-duplex operating mode:

The conveyer (70) of 0 first radio unit (66) is movable, and first radio unit (66) the switching circuit (76) is by the output coupling of the conveyer (70) of first radio unit (66) To the antenna (74) of first radio unit (66)；And

The conveyer (88) of 0 second radio unit (68) is movable, and second radio unit (68) the switching circuit (94) is by the output coupling of the conveyer (88) of second radio unit (68) To the antenna (92) of second radio unit (68)；And

● when operation is in the receiving phase of the half-duplex operating mode:

The receiver (72) of 0 first radio unit (66) is movable, and first radio unit (66) the switching circuit (76) is by the input coupling of the receiver (72) of first radio unit (66) To the antenna (74) of first radio unit (66)；And

The receiver (90) of 0 second radio unit (68) is movable, and second radio unit (68) the switching circuit (94) is by the input coupling of the receiver (90) of second radio unit (68) To the antenna (92) of second radio unit (68).

5. radio system (60) as described in claim 1, wherein the radio system (60) includes:

● first group of radio unit (62), including first radio unit (66) and one or more additional first nothings Line electric unit (66), each radio unit (66) in first group of radio unit (62) include:

Conveyer (70)；

Receiver (72)；

Antenna (74)；And

Switching circuit (76) is suitable for the institute of the radio unit (66) in first group of radio unit (62) It states the output of conveyer (70) or the described of the radio unit (66) in first group of radio unit (62) connects The input coupling of device (72) is received to the antenna (74) of the radio unit (66)；And

● second group of radio unit (64), including second radio unit (68) and one or more additional second nothings Line electric unit (68), each radio unit (68) in second group of radio unit (64) include:

Antenna (92)；And

One of following: conveyer (88) has the radio list being coupled in second group of radio unit (64) The output of the antenna (92) of first (68)；Receiver (90) has and is coupled in second group of radio unit (64) The input of the antenna (92) of the radio unit (68)；And tool is selectively coupled to second group of radio list The conveyer and tool of the output of the antenna (92) of the radio unit (68) in first (64) are selectively coupled to institute State the receiver of the input of the antenna (92) of the radio unit (68) in second group of radio unit (64).

6. radio system (60) as claimed in claim 5, wherein each wireless in second group of radio unit (64) Electric unit (68) includes the receiver (90) but not including that the conveyer (88).

7. radio system (60) as claimed in claim 5, wherein each wireless in second group of radio unit (64) Electric unit (68) includes the conveyer (88) but not including that the receiver (90).

8. radio system (60) as claimed in claim 5, wherein each wireless in second group of radio unit (64) Electric unit (68) includes:

Conveyer (88)；

Receiver (90)；

Antenna (92)；And

Switching circuit (94) is suitable for the described of the radio unit (68) in second group of radio unit (64) The output of conveyer (88) or the reception of the radio unit (68) in second group of radio unit (64) The antenna of the input coupling of device (90) to the radio unit (68) in second group of radio unit (64) (92)。

9. radio system (60) as claimed in claim 8, wherein in the full duplex operating mode:

For each radio unit (66) in first group of radio unit (62), first group of radio unit (62) In the conveyer (70) of the radio unit (66) be movable, and in first group of radio unit (62) The switching circuit (76) of the radio unit (66) will be described wireless in first group of radio unit (62) The output coupling of the conveyer (70) of electric unit (66) is to the nothing in first group of radio unit (62) The antenna (74) of line electric unit (66)；And

For each radio unit (68) in second group of radio unit (64), second group of radio unit (64) In the receiver (90) of the radio unit (68) be movable, and in second group of radio unit (64) The switching circuit (94) of the radio unit (68) will be described wireless in second group of radio unit (64) The input coupling of the receiver (90) of electric unit (68) is to the nothing in second group of radio unit (64) The antenna (92) of line electric unit (68).

10. radio system (60) as claimed in claim 9, in which:

● when operating the transmission phase in the half-duplex operating mode:

Zero for each radio unit (66) in first group of radio unit (62), first group of radio unit (62) conveyer (70) of the radio unit (66) in is movable, and first group of radio unit (62) switching circuit (76) of the radio unit (66) in is by the institute in first group of radio unit (62) The output coupling of the conveyer (70) of radio unit (66) is stated into first group of radio unit (62) The antenna (74) of the radio unit (66)；And

Zero for each radio unit (68) in second group of radio unit (64), second group of radio unit (64) conveyer (88) of the radio unit (68) in is movable, and second group of radio unit (64) switching circuit (94) of the radio unit (68) in is by the institute in second group of radio unit (64) The output coupling of the conveyer (88) of radio unit (68) is stated into second group of radio unit (64) The antenna (92) of the radio unit (68)；And

● when operation is in the receiving phase of the half-duplex operating mode:

Zero for each radio unit (66) in first group of radio unit (62), first group of radio unit (62) receiver (72) of the radio unit (66) in is movable, and first group of radio unit (62) switching circuit (76) of the radio unit (66) in is by the institute in first group of radio unit (62) The input coupling of the receiver (72) of radio unit (66) is stated into first group of radio unit (62) The antenna (74) of the radio unit (66)；And

Zero for each radio unit (68) in second group of radio unit (64), second group of radio unit (64) receiver (90) of the radio unit (68) in is movable, and second group of radio unit (64) switching circuit (94) of the radio unit (68) in is by the institute in second group of radio unit (64) The input coupling of the receiver (90) of radio unit (68) is stated into second group of radio unit (64) The antenna (92) of the radio unit (68).

11. radio system (60) as described in claim 1, wherein when operation in the full duplex operating mode, it is described The conveyer (70,88) of one of first and second radio units (66,68) is idle, and is utilized to mention It is eliminated for self-interference.

12. radio system (60) as described in claim 1, wherein when operation in the full duplex operating mode, it is described The receiver (72,90) of one of first and second radio units (66,68) is idle, and is utilized to mention It is eliminated for self-interference.

13. radio system (60) as claimed in claim 5, wherein second radio unit (68) includes at least and connects It receives device (90) and the radio system (60) is configured to:

It receives via the receiver (72,90) of each of first and second radio unit (66,68) without traditional thread binding Set the training sequence that (122,124) are transmitted；And

Based on via the radio in first group of radio unit (62) and second group of radio unit (64) The receiver (72,90) the received training sequence of institute of each of unit (66,68) estimates the wireless device The channel status of channel between each antenna (74,92) of (122,124) and first and second radio unit (66,68) Information.

14. radio system (60) as described in claim 1, wherein second radio unit (68), which includes at least, to be passed Device (88) and the radio system (60) is sent to be configured to:

It transmits via the conveyer (70,88) of each of first and second radio unit (66,68) for institute State the training sequence of the channel estimation between radio system (60) and one or more wireless devices (122,124).

15. radio system (60) as claimed in claim 2, wherein when operation in the full duplex operating mode, it is described There is different Time Division Duplex TDD to configure for first radio unit (66) and second radio unit (68).

16. radio system (60) as claimed in claim 15, wherein the different TDD configuration includes on different TDD Line link is to downlink link ratio.

17. radio system (60) as claimed in claim 15, wherein the different TDD configuration includes that different TDD is passed Send phase and different TDD receiving phases.

18. radio system (60) as claimed in claim 15, wherein the TDD of first radio unit (66) is transmitted The TDD of the TDD of phase and second radio unit (68) transmission reverse-phase and first radio unit (66) The TDD receiving phase reverse phase of receiving phase and second radio unit (68).

19. radio system (60) as claimed in claim 15, wherein when operation is in the full duplex operating mode:

● during the first phase of the full duplex operating mode:

The conveyer (70) of first radio unit (66) is movable, and first radio unit (66) the switching circuit (76) is by the output coupling of the conveyer (70) of first radio unit (66) To the antenna (74) of first radio unit (66)；And

The receiver (90) of second radio unit (68) is movable, and second radio unit (68) the switching circuit (94) is by the input coupling of the receiver (90) of second radio unit (68) To the antenna (92) of second radio unit (68)；And

● during the second phase of the full duplex operating mode:

The receiver (72) of first radio unit (66) is movable, and first radio unit (66) the switching circuit (76) is by the input coupling of the receiver (72) of first radio unit (66) To the antenna (74) of first radio unit (66)；And

The conveyer (88) of second radio unit (68) is movable, and second radio unit (68) the switching circuit (94) is by the output coupling of the conveyer (88) of second radio unit (68) To the antenna (92) of second radio unit (68).

20. radio system (60) as claimed in claim 15, wherein operate TDD operation mode wireless device (122, 124) different sets are connected to first radio unit (66) and second radio unit (68).

21. radio system (60) as claimed in claim 15 further includes one or more additional radio units (164), Wherein first radio unit (66), second radio unit (68) and one or more of additional radio lists First (164) there is different TDD to configure.

22. radio system (60) as claimed in claim 21, wherein first radio unit (66), described second The TDD of at least one of radio unit (68) and one or more of additional radio units (164) transmits phase bit position It is overlapped first radio unit (66), second radio unit (68) and one or more of additional radio lists The TDD receiving phase of at least one of first (164).

23. radio system (60) as described in claim 1, wherein the wireless communication system (10) is cellular communications network Network and the radio node (12,14) are base station (12).

24. radio system (60) as described in claim 1, wherein the wireless communication system (10) is cellular communications network Network and the radio node (12,14) are attached to the wireless device (122,124) of the cellular communications networks.

25. radio system (60) as described in claim 1, wherein second radio unit (68) includes described connects Device (90) are received but not including that the conveyer (88).

26. radio system (60) as described in claim 1, wherein second radio unit (68) includes the biography Device (88) is sent but not including that the receiver (90).