CN108966348B - A kind of reference information interference processing method and device - Google Patents

Abstract

Embodiments of the present invention disclose a method and device for processing reference information interference. The method includes: a second base station receives reference signal configuration information sent by a first base station; is set to a preset value; when the second base station schedules the second terminal, if it is determined that the preset bit is the preset value, the first preset mechanism is used for data transmission and reception, otherwise, the The second preset mechanism performs data transmission and reception; wherein the first base station sends the reference signal configuration information to the second base station when it determines that the reference information interferes. In the embodiment of the present invention, by setting preset bits in the downlink physical control channel, and determining the corresponding data transmission and reception mechanism by judging different preset values, the interference on the reference signal can be effectively reduced, the receiving accuracy of the reference signal can be improved, and further effective estimation can be achieved. Channel state information to improve decoding efficiency.

Description

A kind of reference information interference processing method and device

technical field

Embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and apparatus for processing reference information interference.

Background technique

With the continuous development of the mobile Internet and the Internet of Things, 5G technology has also put forward corresponding requirements for its own development according to the increasing demand. In order to meet the index requirements of the 5G communication system, the 3GPP organization decided to adopt a more flexible duplex mode to reduce the communication delay , to improve the throughput of the system.

In NR (New Radio, wireless access), flexible duplex technology is used to dynamically indicate the uplink and downlink transmission directions of each time slot. Although it can adapt to the dynamic changes of uplink and downlink services, it will cause reference information interference: one is Inter-gNB (base station) interference, that is, the interference of the downlink signal to the uplink signal, as shown in Figure 1; the other is the inter-UE (terminal) interference, that is, the interference of the uplink signal to the downlink signal, as shown in Figure 2.

If the interference is not dealt with accordingly, the interference signal will have a serious impact on the performance of the system, and even reduce the throughput of the system.

In NR, the existing solutions include advanced receiver technology, which uses interference suppression or interference cancellation technology at the receiving end to suppress or eliminate reference information interference signals and recover useful signals; cooperative scheduling technology, through cooperative scheduling between base stations Keep reference information with strong interference orthogonal in frequency domain or time domain; beamforming technology, by adjusting the beam direction between gNB and UE, to coordinate reference information interference; sensing mechanism, through long-term or short-term sensing measurement, Avoid reference information interference.

In the process of implementing the embodiments of the present invention, the inventor found that in the existing method, the advanced receiver technology needs to add interference cancellation or interference suppression technology at the receiving end, and this solution has high complexity; Services are allocated to different time or frequency domains to effectively eliminate interference, but it can only be achieved with interference measurement; beamforming technology also requires accurate channel state measurement information to use a suitable beamforming matrix to achieve interference The purpose of elimination; the perception mechanism also needs to perform perception measurement before resource scheduling can be performed according to the perception situation, and its usage scenarios have certain limitations.

SUMMARY OF THE INVENTION

Due to the above problems in the existing methods, embodiments of the present invention provide a method and apparatus for processing reference information interference.

In a first aspect, an embodiment of the present invention provides a method for processing reference information interference, including:

The second base station receives the reference signal configuration information sent by the first base station;

setting the preset bit of the downlink physical control channel DCI to a preset value according to the reference signal configuration information;

When the second base station schedules the second terminal, if it is determined that the preset bit is the preset value, the first preset mechanism is used for data transmission and reception; otherwise, the second preset mechanism is used for data transmission and reception. data transmission and reception;

Wherein, the first base station sends the reference signal configuration information to the second base station when it judges that the reference information interferes.

Optionally, the first preset mechanism includes a silent muting mechanism, a puncturing punching mechanism or a code division multiplexing mechanism.

Optionally, the reference signal includes a channel state information reference signal CSI-RS, an uplink channel quality measurement reference signal SRS or a demodulation reference signal DMRS.

In a second aspect, an embodiment of the present invention further provides a method for processing reference information interference, including:

The first base station receives the reference information interference measurement result sent by the first terminal;

If it is determined that the reference information interference is known according to the reference information interference measurement result, the reference signal configuration information of the first terminal is acquired, and the reference signal configuration information is sent to the second base station.

Optionally, the sending the reference signal configuration information to the second base station specifically includes:

The reference signal configuration information is sent to the second base station through the air interface OTA/backhaul line Backhual.

In a third aspect, an embodiment of the present invention provides an apparatus for processing reference information interference, including:

an information receiving module, configured to receive the reference signal configuration information sent by the first base station;

a preset bit setting module, configured to set the preset bit of the downlink physical control channel DCI to a preset value according to the reference signal configuration information;

A terminal scheduling module, configured to use the first preset mechanism for data transmission and reception if it is determined that the preset bit is the preset value when the second base station schedules the second terminal, otherwise, use the first preset mechanism to send and receive data. The second preset mechanism performs data transmission and reception;

Wherein, the first base station sends the reference signal configuration information to the second base station when it judges that the reference information interferes.

Optionally, the first preset mechanism in the terminal scheduling module includes a silent muting mechanism, a puncturing punching or a code division multiplexing mechanism.

Optionally, the reference signal includes a channel state information reference signal CSI-RS, an uplink channel quality measurement reference signal SRS or a demodulation reference signal DMRS.

In a fourth aspect, an embodiment of the present invention further provides an apparatus for processing reference information interference, including:

a measurement result receiving module, configured to receive the reference information interference measurement result sent by the first terminal;

An information sending module, configured to acquire reference signal configuration information of the first terminal and send the reference signal configuration information to a second base station if the reference information interference is determined to be known according to the reference information interference measurement result.

Optionally, the information sending module is specifically configured to send the reference signal configuration information to the second base station through the air interface OTA/backhaul line Backhual.

It can be seen from the above technical solutions that in the embodiment of the present invention, by setting preset bits in the downlink physical control channel, and determining the corresponding data transmission and reception mechanism by judging different preset values, the interference on the reference signal is effectively reduced, and the reception of the reference signal is improved. The accuracy can further effectively estimate the channel state information and improve the decoding efficiency.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts.

1 is a schematic diagram of reference information interference between base stations provided by the prior art;

2 is a schematic diagram of reference information interference between terminals provided by the prior art;

3 is a schematic flowchart of a method for processing reference information interference provided by an embodiment of the present invention;

4 is a schematic diagram of coordination of reference signal interference between base stations according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of coordination of reference signal interference between terminals according to an embodiment of the present invention;

6 is a schematic flowchart of a method for processing reference information interference provided by another embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an apparatus for processing reference information interference according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an apparatus for processing reference information interference according to another embodiment of the present invention;

9 is a logical block diagram of a first electronic device in an embodiment of the present invention;

FIG. 10 is a logical block diagram of a second electronic device in an embodiment of the present invention.

Detailed ways

The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

FIG. 3 shows a schematic flowchart of a method for processing reference information interference provided by this embodiment, including:

S301. The second base station receives the reference signal configuration information sent by the first base station.

The first base station (corresponding to gNB1 in FIG. 1 ) and the second base station (corresponding to gNB2 in FIG. 1 ) are two adjacent base stations. When the first base station passes through the corresponding first terminal (corresponding to the figure After the UE1 in 1) obtains the reference information interference measurement result by measurement, when it is judged that the reference information interference is obtained according to the reference information interference measurement result, the reference signal configuration information of the first terminal is sent to the second base station.

The reference signal configuration information is the configuration information of the reference signal of the first terminal. By sending the reference signal configuration information to the second base station, the second terminal (corresponding to UE2 in FIG. 1 ) corresponding to the second base station is connected to the second base station. When the first terminal communicates, encoding and decoding can be performed using the same reference signal configuration information.

The reference signal may include CSI-RS (channel state information reference signal), SRS (uplink channel quality measurement reference signal) or DMRS (demodulation reference signal), that is, this embodiment is applicable to reference signals such as CSI-RS, SRS or DMRS. Signal interference problem.

S302. Set a preset bit of a DCI (downlink physical control channel) to a preset value according to the reference signal configuration information.

The DCI is a downlink physical control channel of the second base station, and the DCI includes several data bits.

The preset bit is a preset data bit in the DCI, and is used to record whether there is a reference signal interference problem.

The preset value is a preset value, indicating that there is a reference signal interference problem. For example, when the default value is 1, it indicates that there is a reference signal interference problem, and when the default value is 0, it indicates that there is no reference signal interference problem.

S303. When the second base station schedules the second terminal, if it is determined that the preset bit is the preset value, use the first preset mechanism to send and receive data, otherwise use the second preset mechanism for data transmission and reception.

The first preset mechanism is a preset data transmission and reception mechanism, and the first preset mechanism may include a muting (silence) mechanism, a punching (hole punching) mechanism, or a code division multiplexing mechanism.

In this embodiment, the second preset mechanism is an existing data transmission and reception mechanism.

For example, referring to FIG. 1, the first terminal first performs reference information interference measurement, and feeds back the reference information interference measurement result to the first base station (gNB1), and the first base station judges and learns that there is a reference information interference problem according to the reference information interference measurement result , the reference signal configuration information of the first terminal is obtained, and the reference signal configuration information is sent to the second base station (gNB2). The second base station sets the preset bit of DCI to 1 after receiving the reference signal configuration information. When the first terminal (UE1) needs to communicate with the second terminal (UE2), and the second base station performs scheduling to realize the communication between the first terminal and the second terminal, if it is determined that the preset bit of the learned DCI is set to 1, then The preset code division multiplexing mechanism is used for data transmission and reception. If it is determined that the preset bit of the DCI is set to 0, the existing default mechanism is used for data transmission and reception to avoid reference signal interference between base stations. Referring to FIG. 4 , the base station may perform reference information interference measurement through the NRCSI-RS of the neighboring cell at the resource position of the specified mechanism. Specifically, after the first base station performs the CSI-RS reference information interference measurement on the uplink signal (UL), it will update the coordination resource position of the downlink signal (DL) of the second base station. Signal configuration information, and configure the NR CSI-RS configuration information to the corresponding second terminal through high-layer signaling.

When there is reference signal interference between terminals, referring to FIG. 2 and FIG. 5 , the same method as described above is used to avoid the problem of reference signal interference between terminals.

In this embodiment, preset bits are set in the downlink physical control channel, and corresponding data transmission and reception mechanisms are determined by judging different preset values, so as to effectively reduce the interference on the reference signal, improve the receiving accuracy of the reference signal, and further effectively estimate the channel. state information to improve decoding efficiency.

FIG. 6 shows a schematic flowchart of a method for processing reference information interference provided by this embodiment, including:

S601. The first base station receives the reference information interference measurement result sent by the first terminal.

S602. If it is determined that the reference information interference is known according to the reference information interference measurement result, obtain the reference signal configuration information of the first terminal, and send the reference signal configuration information to the second base station.

Specifically, the first base station (corresponding to gNB1 in FIG. 1 ) and the second base station (corresponding to gNB2 in FIG. 1 ) are two adjacent base stations. After UE1 in FIG. 1 obtains the reference information interference measurement result by measurement, when it is judged that the reference information interference is obtained according to the reference information interference measurement result, the reference signal configuration information of the first terminal is sent to the second base station.

The reference signal configuration information is the configuration information of the reference signal of the first terminal. By sending the reference signal configuration information to the second base station, the second terminal corresponding to the second base station (corresponding to UE2 in FIG. 1 ) When communicating with the first terminal, encoding and decoding can be performed using the same reference signal configuration information.

The reference signal may include CSI-RS (channel state information reference signal), SRS (uplink channel quality measurement reference signal) or DMRS (demodulation reference signal), that is, this embodiment is applicable to reference signals such as CSI-RS, SRS or DMRS. Signal interference problem.

In this embodiment, preset bits are set in the downlink physical control channel, and corresponding data transmission and reception mechanisms are determined by judging different preset values, so as to effectively reduce the interference on the reference signal, improve the receiving accuracy of the reference signal, and further effectively estimate the channel. state information to improve decoding efficiency.

Further, on the basis of the foregoing method embodiments, the sending of the reference signal configuration information to the second base station in S602 specifically includes:

The reference signal configuration information is sent to the second base station through OTA (air interface)/Backhual (backhaul).

The reference signal configuration information can be sent safely and quickly through OTA/Backhual.

Specifically, in the flexible duplex technology of NR, the interference of the reference signal is reduced by the following steps:

A1. In the cell of the first base station gNB1, the first terminal UE1 obtains the reference information interference measurement result through CLI (cross link interference) measurement, and reports the reference information interference measurement result to gNB1;

A2. According to the reference information interference measurement result reported by UE1, gNB1 transmits the CSI-RS reference signal configuration information of UE1 to the neighboring base station gNB2 through OTA/Backhual;

A3. The gNB2 configures the NR CSI-RS configuration information to the corresponding second terminal UE2 through RRC signaling according to the NR CSI-RS reference signal configuration information transmitted by the neighboring cell;

A4. When the gNB2 schedules the UE2 in the cell, the bit information bit of the NR DCI signaling indicates whether the UE2 adopts the NR CSI-RS reference signal coordination mechanism:

If the bit information bit is 1, the first terminal transmits signals through a prescribed mechanism, such as muting, punching, or even code division multiplexing, etc., and the receiving end (second terminal) uses the corresponding receiving mechanism to receive according to the transmitting mechanism, such as As shown in Figure 4; if the bit information bit is 0, the transmission and reception are carried out according to the normal mapping mode. The base station can perform reference information interference measurement through the NR CSI-RS of neighboring cells at the specified mechanism resource position, as shown in Figure 5 .

FIG. 7 shows a schematic structural diagram of a reference information interference processing device provided in this embodiment. The device includes: an information receiving module 701, a preset bit setting module 702, and a terminal scheduling module 703, wherein:

The information receiving module 701 is configured to receive the reference signal configuration information sent by the first base station;

The preset bit setting module 702 is configured to set the preset bit of the downlink physical control channel DCI to a preset value according to the reference signal configuration information;

The terminal scheduling module 703 is configured to use the first preset mechanism for data transmission and reception if it is determined that the preset bit is the preset value when the second base station schedules the second terminal , otherwise the second preset mechanism is used to send and receive data;

Wherein, the first base station sends the reference signal configuration information to the second base station when it judges that the reference information interferes.

Specifically, the information receiving module 701 receives the reference signal configuration information sent by the first base station; the preset bit setting module 702 sets the preset bit of the downlink physical control channel DCI to a preset value according to the reference signal configuration information ; When the second base station schedules the second terminal, if the terminal scheduling module 703 determines that the preset bit is the preset value, it adopts the first preset mechanism to send and receive data, otherwise The second preset mechanism is used for data transmission and reception.

In this embodiment, preset bits are set in the downlink physical control channel, and corresponding data transmission and reception mechanisms are determined by judging different preset values, so as to effectively reduce the interference on the reference signal, improve the receiving accuracy of the reference signal, and further effectively estimate the channel. state information to improve decoding efficiency.

Further, on the basis of the above apparatus embodiment, the first preset mechanism in the terminal scheduling module 703 includes a silent muting mechanism, a puncturing punching or a code division multiplexing mechanism.

Further, on the basis of the above apparatus embodiment, the reference signal includes a channel state information reference signal CSI-RS, an uplink channel quality measurement reference signal SRS or a demodulation reference signal DMRS.

The reference information interference processing apparatus described in this embodiment can be used to execute the corresponding method embodiments described above, and the principles and technical effects thereof are similar, and details are not described herein again.

FIG. 8 shows a schematic structural diagram of an apparatus for processing reference information interference provided in this embodiment. The apparatus includes: a measurement result receiving module 801 and an information sending module 802, wherein:

The measurement result receiving module 801 is configured to receive the reference information interference measurement result sent by the first terminal;

The information sending module 802 is configured to obtain the reference signal configuration information of the first terminal and send the reference signal configuration information to the second base station if the reference information interference is determined according to the reference information interference measurement result.

Specifically, the measurement result receiving module 801 receives the reference information interference measurement result sent by the first terminal; the information sending module 802 obtains the reference information interference according to the reference information interference measurement result, and obtains the reference information interference measurement result. and send the reference signal configuration information to the second base station.

In this embodiment, preset bits are set in the downlink physical control channel, and corresponding data transmission and reception mechanisms are determined by judging different preset values, so as to effectively reduce the interference on the reference signal, improve the receiving accuracy of the reference signal, and further effectively estimate the channel. state information to improve decoding efficiency.

Further, on the basis of the above apparatus embodiment, the information sending module 802 is specifically configured to send the reference signal configuration information to the second base station through the air interface OTA/backhaul line Backhual.

The reference information interference processing apparatus described in this embodiment can be used to execute the corresponding method embodiments described above, and the principles and technical effects thereof are similar, and details are not described herein again.

9, the first electronic device includes: a processor (processor) 901, a memory (memory) 902 and a bus 903;

in,

The processor 901 and the memory 902 communicate with each other through the bus 903;

The processor 901 is configured to call program instructions in the memory 902 to execute the methods provided by the above method embodiments, for example, including:

The second base station receives the reference signal configuration information sent by the first base station;

setting the preset bit of the downlink physical control channel DCI to a preset value according to the reference signal configuration information;

When the second base station schedules the second terminal, if it is determined that the preset bit is the preset value, the first preset mechanism is used for data transmission and reception; otherwise, the second preset mechanism is used for data transmission and reception. data transmission and reception;

Wherein, the first base station sends the reference signal configuration information to the second base station when it judges that the reference information interferes.

This embodiment provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions cause the computer to execute the methods provided by the foregoing method embodiments, for example, including :

The second base station receives the reference signal configuration information sent by the first base station;

setting the preset bit of the downlink physical control channel DCI to a preset value according to the reference signal configuration information;

When the second base station schedules the second terminal, if it is determined that the preset bit is the preset value, the first preset mechanism is used for data transmission and reception; otherwise, the second preset mechanism is used for data transmission and reception. data transmission and reception;

Wherein, the first base station sends the reference signal configuration information to the second base station when it judges that the reference information interferes.

10 , the second electronic device includes: a processor (processor) 1001, a memory (memory) 1002, and a bus 1003;

in,

The processor 1001 and the memory 1002 communicate with each other through the bus 1003;

The processor 1001 is configured to call program instructions in the memory 1002 to execute the methods provided by the above method embodiments, for example, including:

The first base station receives the reference information interference measurement result sent by the first terminal;

If it is determined that the reference information interference is known according to the reference information interference measurement result, the reference signal configuration information of the first terminal is acquired, and the reference signal configuration information is sent to the second base station.

This embodiment provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions cause the computer to execute the methods provided by the foregoing method embodiments, for example, including :

The first base station receives the reference information interference measurement result sent by the first terminal;

If it is determined that the reference information interference is known according to the reference information interference measurement result, the reference signal configuration information of the first terminal is acquired, and the reference signal configuration information is sent to the second base station.

The device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.

From the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on this understanding, the above-mentioned technical solutions can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic A disc, an optical disc, etc., includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments or some parts of the embodiments.

It should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be used for The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A reference information interference processing method is characterized by comprising the following steps:

the second base station receives the reference signal configuration information sent by the first base station;

setting a preset bit of the DCI as a preset value according to the reference signal configuration information, wherein the preset bit is a preset data bit in the DCI and is used for recording whether a reference signal interference problem exists or not; the preset value is a preset value and indicates that the problem of reference signal interference exists;

when the second base station schedules the second terminal, if the preset bit is judged to be the preset value, a first preset mechanism is adopted for data transmission and reception, otherwise, a second preset mechanism is adopted for data transmission and reception;

and when judging that the reference signal interference is acquired, the first base station sends the reference signal configuration information to the second base station.

2. The method of claim 1, wherein the first predetermined mechanism comprises a muting mechanism, a puncturing mechanism, or a code division multiplexing mechanism.

3. The method of claim 1, wherein the reference signal comprises a channel state information reference signal (CSI-RS), an uplink channel quality measurement reference signal (SRS), or a demodulation reference signal (DMRS).

4. A reference information interference processing method is characterized by comprising the following steps:

a first base station receives a reference information interference measurement result sent by a first terminal;

if the reference signal interference is judged and known according to the reference information interference measurement result, acquiring reference signal configuration information of the first terminal, and sending the reference signal configuration information to a second base station, so that the second base station sets a preset bit of downlink physical control channel (DCI) to be a preset value according to the received reference signal configuration information, wherein the preset bit is a data bit in the preset DCI and is used for recording whether the reference signal interference problem exists or not; the preset value is a preset value and indicates that the problem of reference signal interference exists; and when the second base station schedules the second terminal, if the preset bit is judged to be the preset value, the first preset mechanism is adopted for data transmission and reception, otherwise, the second preset mechanism is adopted for data transmission and reception.

5. The method of claim 4, wherein the sending the reference signal configuration information to the second base station specifically comprises:

and sending the reference signal configuration information to the second base station through an air interface OTA/backhaul line backhaul.

6. A reference information interference processing apparatus for a second base station, comprising:

the information receiving module is used for receiving reference signal configuration information sent by a first base station;

a preset bit setting module, configured to set a preset bit of the DCI according to the reference signal configuration information, where the preset bit is a preset data bit in the DCI and is used to record whether there is a reference signal interference problem; the preset value is a preset value and indicates that the problem of reference signal interference exists;

the terminal scheduling module is used for transmitting and receiving data by adopting a first preset mechanism if the preset bit is judged to be the preset value when the second base station schedules the second terminal, and otherwise, transmitting and receiving data by adopting a second preset mechanism;

and when judging that the reference signal interference is acquired, the first base station sends the reference signal configuration information to the second base station.

7. The apparatus of claim 6, wherein the first predetermined mechanism in the terminal scheduling module comprises a muting mechanism, a puncturing mechanism, or a code division multiplexing mechanism.

8. The apparatus of claim 6, wherein the reference signal comprises a channel state information reference signal (CSI-RS), an uplink channel quality measurement reference signal (SRS), or a demodulation reference signal (DMRS).

9. A reference information interference processing apparatus for a first base station, comprising:

the measurement result receiving module is used for receiving a reference information interference measurement result sent by the first terminal;

an information sending module, configured to, if it is determined according to the reference information interference measurement result that reference information interference is obtained, obtain reference signal configuration information of the first terminal, and send the reference signal configuration information to a second base station, so that the second base station sets a preset bit of a downlink physical control channel DCI according to the received reference signal configuration information to a preset value, where the preset bit is a data bit in the preset DCI and is used to record whether a reference signal interference problem exists; the preset value is a preset value and indicates that the problem of reference signal interference exists; and when the second base station schedules the second terminal, if the preset bit is judged to be the preset value, the first preset mechanism is adopted for data transmission and reception, otherwise, the second preset mechanism is adopted for data transmission and reception.

10. The apparatus of claim 9, wherein the information sending module is specifically configured to send the reference signal configuration information to the second base station via an over-the-air (OTA)/backhaul.

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