CN113055109B - Method and apparatus for coexistence operation improvement - Google Patents

Abstract

A method of improving coexistence operation, comprising: identifying, by a processor of a first device, an occurrence of a coexistence scenario, wherein the coexistence scenario includes using a first wireless device respectively in wireless communication with a second device in a frequency division duplex mode. transmitting and receiving simultaneously using a second wireless technology and a second wireless technology, wherein the first wireless technology is different from the second wireless technology; determining, by the processor, an upper limit on the transmission rate in response to identifying occurrence of the coexistence scenario; and transmitting by the processor with the upper limit or not exceeding the upper limit until the end of the coexistence scenario. By utilizing the present invention, better coexistence operation can be performed.

Description

Improved method and device for coexistence operation

technical field

The present invention relates to wireless communications, and more particularly to improvements in coexistence operation in Frequency-Division Duplexing (FDD) mode.

Background technique

Unless otherwise indicated, the approaches described in this section are not prior art to the claims and are not admitted to be prior art by inclusion in this section.

As the demand for networking and connectivity between devices continues to grow, more and more devices are capable of communicating wirelessly via more than one technology, standard or protocol. For example, current smartphones are generally capable of Long-Term Evolution (LTE) and/or New Radio (New Radio, NR) 3rd Generation Partnership Project (3rd Generation Partnership Project, 3GPP) specification and Bluetooth (Bluetooth), etc. for wireless communication. In other words, in modern communication devices, there are usually different wireless systems, which may cause In-Device Coexistence (IDC) interference. Considering IDC and performance requirements, in order to reduce or mitigate interference to other wireless systems, communication devices with coexisting wireless systems usually limit their transmission power in one wireless system, especially when transmitting in FDD mode.

On the other hand, a packet (packet) modulated by a physical layer (Physical, PHY) at a high rate needs a sufficient signal-to-noise ratio (Signal-to-Noise Ratio, SNR) to be received by a receiving peer device. That is, the SNR is proportional to the power level of the transmit power, therefore, power limitation would be associated with a lower SNR. On the downside, lower SNR can negatively impact the reception of high-speed packets. Therefore, there is a need for a method to improve the coexistence operation in FDD mode for a coexisting wireless system.

Contents of the invention

The following summary of the invention is illustrative only and is not intended to limit the invention in any way. That is, this Summary is provided to introduce the concepts, highlights, benefits and advantages of the novel and non-obvious technologies described herein. Preferred embodiments will be further described in the Detailed Description section. Accordingly, the following Summary is not intended to identify essential features of the claimed subject matter, nor is it intended to determine the scope of the claimed subject matter.

In one aspect, a method may include identifying, by a processor of a first device, an occurrence of a coexistence scenario, wherein the coexistence scenario includes respectively using a first wireless technology in wireless communication with a second device in a frequency division duplex mode. transmitting and receiving concurrently with a second wireless technology, wherein the first wireless technology is different from the second wireless technology; determining, by the processor, an upper bound on a transmission rate in response to identifying occurrence of the coexistence scenario; and Transmitting by the processor at or without the upper limit until the end of the coexistence scenario.

In one aspect, an apparatus may include a first transceiver configured to wirelessly transmit and receive using a first wireless technology; a second transceiver configured to wirelessly transmit and receive using a second wireless technology, wherein the first a wireless technology different from the second wireless technology; and a processor coupled to the first transceiver and the second transceiver and controlling the first transceiver and the second transceiver. The processor is configured to identify an occurrence of a coexistence scenario, wherein the coexistence scenario includes respectively using the first wireless technology and the The second wireless technology simultaneously transmits and receives; in response to identifying the occurrence of the coexistence scenario, determining an upper limit on the transmission rate; and via the first transceiver and the second transceiver at or without exceeding the upper limit The above upper limit is transmitted until the end of the coexistence scenario.

It is worth noting that although the description of the present invention may be provided in the context of specific radio access technologies, networks and network topologies such as Wireless Fidelity (WiFi) and Bluetooth, the concepts presented by the present invention , schemes and any variants or derivatives thereof can be used in, used for or by other types of radio access technologies, networks and network topologies (such as including but not limited to ZigBee, 5th Generation (5th Generation, 5G)/New Radio (New Radio , NR), Long-Term Evolution (LTE), LTE-Advanced (LTE-Advanced), LTE-Advanced Pro (LTE-Advanced Pro), Internet of Things (IoT), Industrial IoT (Industrial IoT , IIoT) and Narrow Band-IoT (NB-IoT) and any future developed networks and technologies) to implement. Therefore, the scope of the present invention is not limited to the examples described herein.

By utilizing the present invention, better coexistence operation can be performed.

Description of drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain principles of the invention. It is to be understood that the drawings are not necessarily to scale, as some components may be shown in dimensions that are not to scale in actual implementation in order to clearly illustrate the concepts of the invention.

Fig. 1 is a schematic diagram of an exemplary communication environment in which various solutions and schemes of the present invention may be implemented.

Figure 2 is a schematic diagram of an exemplary process according to the present invention.

Fig. 3 is a schematic diagram of another exemplary process according to the present invention.

Figure 4 is a schematic diagram of an exemplary process according to the present invention.

FIG. 5 is a schematic diagram of exemplary simulation results according to the present invention.

6 is a block diagram of an exemplary communication system according to an embodiment of the present invention.

FIG. 7 is a flowchart of exemplary processing in accordance with an embodiment of the invention.

Detailed ways

Detailed examples and implementations of the claimed subject matter are disclosed herein. It should be understood, however, that the disclosed examples and implementations of the present invention are merely illustrations of the claimed subject matter, which may be embodied in various forms. However, this invention may be embodied in many different forms and should not be construed as limited to the described exemplary embodiments and implementations of this invention. Rather, these exemplary embodiments and implementations are provided so that this description of the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. In the following description, well-known features and technical details may be omitted to avoid unnecessarily obscuring the embodiments and implementations of the present invention.

overview

Embodiments according to the present invention are related to various technologies, methods, schemes and/or solutions related to improvement of coexistence operation in FDD mode. According to the invention, various possible solutions can be implemented individually or together. That is, while these possible solutions may be described individually below, two or more of these solutions may be implemented in one combination or another.

Fig. 1 illustrates an exemplary communication environment 100 in which various solutions and schemes of the present invention may be implemented. 2-5 illustrate exemplary implementations of various schemes proposed according to the present invention. The following description of the various proposed schemes may be provided with reference to FIGS. 1-5 .

Referring to FIG. 1 , a communication environment 100 may involve a first device or communication device 110 and a second device or communication device 120 in wireless communication with each other using one or more technologies. In particular, each of the first device 110 and the second device 120 may be equipped with multiple wireless systems (such as WiFi and Bluetooth, and optionally one or more other wireless systems, such as LTE and/or NR) , so the first device 110 and the second device 120 may encounter a coexistence scenario (scenario) in which at least two wireless systems simultaneously perform transmission (Transmission, TX) and reception (Reception, RX). In the example shown in FIG. 1, a first device 110 and a second device 120 are shown as having at least a first wireless system using a first technology (which may be noted as "Technology 1") and a second technology (which may be noted as "Technology 1"). Technology 2") second wireless system. When the first wireless system of the first device 110 transmits using the first technology, the first wireless system of the second device 120 may correspondingly use the first technology for receiving. In addition, when the first wireless system of the second device 120 transmits using the first technology, the first wireless system of the first device 110 may correspondingly use the first technology for receiving. Similarly, when the second wireless system of the first device 110 transmits using the second technology, the second wireless system of the second device 120 may correspondingly use the second technology for receiving. Similarly, when the second wireless system of the second device 120 transmits using the second technology, the second wireless system of the first device 110 may correspondingly use the second technology for receiving.

By way of example, the first technology and the second technology may include Bluetooth and WiFi. Correspondingly, when the Bluetooth wireless system of the first device 110 is receiving in the FDD mode (which can be recorded as "BT_RX"), and the WiFi wireless system of the first device 110 is transmitting in the FDD mode (which can be recorded as "WiFi_TX") , or when the Bluetooth wireless system of the first device 110 is transmitting in FDD mode (may be denoted as "BT_TX"), while the WiFi wireless system of the first device 110 is receiving in FDD mode (denoted as "WiFi_RX") , coexistence scenarios may occur. The second device 120 can be the same as above.

Generally, in a coexistence scenario in FDD mode or in a coexistence scenario involving special reuse (reuse), the first device 110 and the second device 120 can pass the number of errors per packet (per-packet error count) or The number of retries (retry count) to automatically adjust (adapt) the transmission rate. However, with this approach, power-limiting issues may degrade overall throughput because each transfer may be performed at a different or lower rate in the event of insufficient SNR margin. Packet delivery retries or retries, which can negatively impact throughput.

FIG. 2 illustrates an exemplary process 200 according to the present invention. Under the proposed scheme according to the present invention, when the first device 110 and the second device 120 wirelessly communicate with each other in FDD mode, each of the first device 110 and the second device 120 can implement the process 200 to improve Coexistence operation in FDD mode. Using the process 200, the first device 110 and the second device 120 can directly limit the transfer rate to a given value (e.g., a rate lower than the "normal" rate in a non-coexistence scenario), instead of performing multiple transfer retries to find the appropriate transfer rate, thus avoiding wasted time and wasted power consumption.

Process 200 may include one or more operations, actions or functions represented by one or more blocks 210 , 220 , 230 , 240 , 250 and 260 . Although illustrated as discrete blocks, the various blocks of process 200 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. For the sake of brevity, the following description of the process 200 may be provided from the perspective of the first device 110 , but a similar description may also be applicable to the second device 120 . Process 200 can begin at 210 .

At 210, the process 200 may include: the second device 120, which is a peer apparatus (peer apparatus) (referred to as "device under test" or "DUT") of the first device 110, may communicate via one or more A wireless system (such as WiFi and Bluetooth) transmits one or more test signals to the first device 110 . Process 200 can proceed from 210 to 220 .

At 220 , the process 200 may include: the first device 110 may estimate the path loss from the perspective of the second device 120 . Process 200 can proceed from 220 to 230 . For example, the first device 110 may base on the estimated transmission power of the second device 120, a Received Signal Strength Indication (RSSI) (referred to as "RX RSSI") of a test signal received from the second device 120 ) and error range (delta margin) to estimate the path loss. This estimate can be expressed mathematically as:

Path Loss = Estimated Transmit Power of Peer - RX RSSI - Error Margin

At 230, the process 200 may include: when the second device 120 (as a DUT) transmits to the first device 110, the first device 110 calculates the upper limit of the transmission rate or the upper limit of the transmission rate based on the transmission power limit in the FDD mode. limit. For example, the process 200 may include: the first device 110 determines the transmission power based on the estimated path loss (referred to as "path_loss") and the receiving sensitivity (sensitivity) of the second device 120 (referred to as "Rx_spec_sensitivity") Upper boundary or limit on transmit power (may be denoted as "FDD_Tx_power_limit"). Exemplary logic for determining whether a given upper bound on transmit power or a limit on transmit power will result in a successful transmit is as follows, but this is merely exemplary and not intended to limit the scope of the present invention:

In an embodiment, the first device 110 may determine whether the power level corresponding to the initial transmission rate is greater than the receiving sensitivity requirement according to the path loss.

For example, the first device 110 may initially transmit at a higher rate according to a modulation and coding scheme (Modulation and CodingScheme, MCS) 7, but due to a coexistence scenario in the FDD mode, the first device 110 may determine to increase its transmission rate to Decrease to a lower rate according to the MCS 4, which satisfies the upper limit of the determined transmit power. Process 200 may proceed from 230 to 240 in case the first device 110 determines that the appropriate transfer rate required to meet the upper limit of the transfer power is its lowest rate (eg, a low rate according to MCS 2 ) or a lower rate is required.

At 240 , the process 200 may include: the first device 110 processes a situation that the determined transmission rate is the lowest rate among the multiple transmission rates of the first device 110 or a lower rate is required. In particular, the process 200 may include: the first device 110 executes one or more sub-procedures (sub-procedure) as shown in FIG. 3 . Process 200 can proceed from 240-250.

At 250, the process 200 may include: the first device 110 determines its initial transmission rate (which may be denoted as "TX_Rate_FDD_initial") in the coexistence scenario as a rate corresponding to the transmission power upper limit determined as described above, or as a rate other than The normal rate (which can be recorded as "Rate1(normal rate)") when coexisting scenarios, whichever is lower. It can also be said that the first device 110 may set its transmission rate as Min(TX_Rate_FDD_initial,Rate1(normal rate)), where Min represents the minimum value. Process 200 can proceed from 250 to 260 .

At 260, the process 200 may include: when in the coexistence scenario in the FDD mode, the first device 110 transmits at the above-mentioned determined transmission rate.

FIG. 3 illustrates exemplary processes 300A, 300B, and 300C in accordance with the present invention. Each process 300A, 300B, and 300C may be an error handling process employed in determining or searching for situations where a given upper bound or upper limit would result in a transfer failure. Process 300A may include one or more operations, actions or functions as represented by one or more blocks 310 and 320 . Process 300B may include one or more operations, actions or functions as represented by one or more blocks 330 and 340 . Process 300C may include one or more operations, actions or functions as represented by one or more blocks 350 and 360 . Although illustrated as discrete blocks, the various blocks of 300A, 300B, and 300C may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. For brevity, the following descriptions of 300A, 300B, and 300C may be provided in terms of the first device 110 , but similar descriptions may also apply to the second device 120 .

At 310, the process 300A may include: the first device 110 determines that TX_Rate_FDD_initial is the lowest transmission rate among the multiple transmission rates at which the first device 110 can transmit, or even a lower rate. Process 300A can proceed from 310 to 320 .

At 320 , the process 300A may include: the first device 110 controlling its Bluetooth wireless system to refrain, stop or otherwise avoid Bluetooth receive (BT_RX) and WiFi transmit (WiFi_TX) concurrence in FDD mode. For example, when the WiFi wireless system is transmitting to the second device 120, the first device 110 can control its Bluetooth wireless system to stop receiving.

At 330, the process 300B may include: the first device 110 determines TX_Rate_FDD_initial as the lowest transmission rate among the multiple transmission rates at which the first device 110 can transmit, or even a lower rate. Process 300B can proceed from 330 to 340 .

At 340, the process 300B may include the first device 110 ceasing to operate in the FDD mode. For example, the first device 110 may switch from the FDD mode to the Time-Division Duplexing (TDD) mode for transmitting or receiving operations.

At 350 , the process 300C may include: the first device 110 determines that TX_Rate_FDD_initial is the lowest transmission rate among the multiple transmission rates at which the first device 110 can transmit, or even a lower rate. Process 300C can proceed from 350 to 360 .

At 360, the process 300C may include the first device 110 setting and maintaining its transfer rate at the lowest transfer rate at least for the duration of the coexistence scenario in FDD mode.

FIG. 4 illustrates an exemplary process 400 in accordance with the present invention. Under the solution proposed according to the present invention, when the first device 110 and the second device 120 are in wireless communication with each other in the FDD mode, the first device 110 and the second device 120 can implement the process 400 to improve the communication in the FDD mode. coexistence operation. Using the process 400, the first device 110 and the second device 120 can directly limit their transfer rates to a given value (eg, a rate lower than the "normal" rate in a non-coexistence scenario), rather than performing multiple transfer re-transmissions. Try to find the right transfer rate, so you can avoid wasting time and avoid wasting power consumption.

Process 400 may include one or more operations, actions, or functions represented by one or more blocks 410 , 420 , 430 , 440 , and 450 . Although illustrated as discrete blocks, the various blocks of process 400 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. For the sake of brevity, the following description of the process 400 may be provided from the perspective of the first device 110 , but a similar description may also apply to the second device 120 . Process 400 can begin at 410 .

At 410, the process 400 may include that the second device 120, which is a peer device to the first device 110 (which may be denoted as a "device under test" or "DUT"), may communicate via one or more wireless systems (such as WiFi and Bluetooth) One or more test signals are transmitted to the first device 110 . Process 400 can proceed from 410 to 420 .

At 420, the process 400 may include that the first device 110 may examine, identify, or otherwise determine the number of packet successes (count) and and/or the number of packet failures to estimate path loss. For example, the first device 110 may examine a histogram of packet error rates associated with past transmissions of the second device 120 to estimate the path loss. Process 400 can proceed from 420 to 430 .

At 430, the process 400 may include that the first device 110 may modify or fine-tune an initial transmission rate (TX_Rate_FDD_initial) for its current transmission rate. For example, if the success rate according to the histogram is greater than a first threshold (such as X%), the first device 110 may increase the initial transmission rate. In addition, the first device 110 may reduce the initial transmission rate if the success rate according to the histogram is less than a second threshold (such as Y%), wherein the first threshold and the second threshold are the same or different. If the first threshold and the second threshold are different, the first threshold may be greater than the second threshold. Process 400 can proceed from 430 to 440 .

At 440, the process 400 may include: the first device 110 determines its transmission rate as the initial transmission power (TX_Rate_FDD_initial) determined as described above, or determines its transmission rate as the normal rate (Rate1(normal rate) ), whichever is lower. It can also be said that the first device 110 may set its transmission rate as Min(TX_Rate_FDD_initial,Rate1(normal rate)), where Min represents the minimum value. Process 400 can proceed from 440 to 450 .

At 450, the process 400 may include: when in the coexistence scenario in the FDD mode, the first device 110 transmits at the above-mentioned determined transmission rate.

FIG. 5 illustrates exemplary simulation results 500 according to the present invention. In the graph shown in FIG. 5 , the vertical axis represents packet RSSI, and the horizontal axis represents distance. Simulation results 500 show results for different output powers under the same path loss model. For reception, different sensitivity levels can be defined for different modulation schemes when receiving packets at a given distance. For example, for binary phase shift keying (Binary Phase Shift Keying, BPSK), the sensitivity level may be -82dbm, and the output power at 15 meters may be 0.5db. For quadrature phase shift keying (Quadrature Phase Shift Keying, QPSK), the sensitivity level can be -79dbm, and the output power at 15 meters can be 0.5db. For quadrature amplitude modulation (16-Quadrature Amplitude Modulation, 16QAM), the sensitivity level can be -74dbm, and the output power at 15 meters can be 0.5db. For phase quadrature amplitude modulation (64-Quadrature Amplitude Modulation, 64QAM), the sensitivity level can be -66dbm, and the output power at 15 meters can be 0.5db. Therefore, in a 15m scenario with an output power of 0.5db, the rate may be limited by the BPSK modulation scheme.

Therefore, under the proposed solution according to the present invention, the first device 110 and the second device 120 can limit their transmission rates to satisfy the power limit, thus obtaining more link budget under FDD coexistence. Under the proposed scheme, the limitation on the transfer rate can be determined based on RSSI. In this case, when the rate determination fails (for example, the determined initial transmission rate is the minimum transmission rate or lower than the minimum transmission rate), the first device 110 and the second device 120 may prohibit or stop Bluetooth receiving and The concurrency of WiFi transmission can either switch out of the FDD mode (for example, switch to the TDD mode), or can maintain the lowest rate. Under the proposed solution, the first device 110 and the second device 120 can fine-tune the limit of the transmission rate based on the success rate in the histogram. Advantageously, better performance (eg, higher throughput) can be achieved by limiting the transfer rate in coexistence scenarios in FDD mode. In addition, by avoiding multiple retries for determining the transfer rate in conventional methods, waste of air resources can be avoided and power consumption can be reduced.

Exemplary implementation

FIG. 6 illustrates an exemplary system 600 having an exemplary device 610 and an exemplary device 620 according to an embodiment of the invention. Each device 610 and device 620 can perform various functions to implement solutions, techniques, processes and methods related to coexistence operation in FDD mode described in the present invention, including the above-mentioned various solutions and the following process 700 . For example, the device 610 may be implemented in the first device 110 or implemented as the first device 110 , and the device 620 may be implemented in the second device 120 or implemented as the second device 120 .

Each device 610 and device 620 may be part of an electronic device, which may be a UE, such as a portable or mobile device, a wearable device, a wireless communication device, or a computing device. For example, each device 610 and device 620 can be connected to a smart phone, a smart watch, a personal digital assistant, a digital camera or a computing device (such as a tablet computer, a laptop computer or a notebook computer), a station (Station, STA) or an access point (Access Point , AP). Each device 610 and device 620 may also be part of a machine-type device, which may be an IoT or NB-IoT device, such as a fixed or stationary device, a home device, a wired communication device, or a computing device. For example, each device 610 and device 620 may be implemented in a smart thermostat (thermostat), smart refrigerator, smart door lock, wireless speaker, or home control center.

In some implementations, each device 610 and device 620 may be implemented in the form of one or more integrated circuit (Integrated-Circuit, IC) chips, such as including but not limited to one or more single-core processors, one or more Multi-core processors, one or more Reduced-Instruction Set Computing (Reduced-Instruction Set Computing, RISC) processors, or one or more Complex-Instruction-Set Computing (Complex-Instruction-Set-Computing, CISC) processors. Each device 610 and device 620 may include at least some of the components shown in FIG. 6 , such as a processor 612 and a processor 622 , respectively. Each device 610 and device 620 may also include one or more other components (such as external power supply, display device and/or user interface device) that are not related to the solution proposed by the present invention, so for the sake of brevity, each device 610 and device 620 Such components are neither shown in Figure 6 nor described below.

In one aspect, each processor 612 and processor 622 may be implemented as one or more single-core processors, one or more multi-core processors, one or more RISC processors, or one or more CISC processors. That is, although the present invention uses the singular term "processor" to refer to processor 612 and processor 622, according to the present invention, each processor 612 and processor 622 may include multiple processors in some embodiments, and In other embodiments a single processor is included. Alternatively, each of processor 612 and processor 622 may be implemented in hardware (and, optionally, firmware) with electronic components including, but not limited to, one or more transistors, one or more diodes, a or more capacitors, one or more resistors, one or more inductors, one or more memristors (memristor) and/or one or more varactor diodes (varactor), the above-mentioned electronic components can be configured and arranged to The specific purpose according to the present invention is achieved. In other words, in at least some embodiments, each of processor 612 and processor 622 may be a special-purpose machine designed, arranged, and configured to perform a specific task, wherein the specific task includes FDD mode according to various embodiments of the present invention Coexistence operation improvements under .

In some implementations, the device 610 may also include a first transceiver 616 and a second transceiver 618 , and the transceiver 616 and the transceiver 618 may be coupled to the processor 612 . Transceiver 616 may include transmitters and receivers capable of wireless transmission and wireless reception using a first wireless technology. Transceiver 618 may include transmitters and receivers capable of wireless transmission and wireless reception using a second wireless technology. Similarly, the device 620 may also include a first transceiver 626 and a second transceiver 628 , and the transceiver 626 and the transceiver 628 may be coupled to the processor 622 . Transceiver 626 may include transmitters and receivers capable of wireless transmission and wireless reception using a first wireless technology. Transceiver 628 may include transmitters and receivers capable of wireless transmission and wireless reception using a second wireless technology. Accordingly, the device 610 and the device 620 can communicate with each other wirelessly via the above-mentioned transceivers, respectively. By way of example, the first wireless technology and the second wireless technology may include WiFi and Bluetooth.

In some implementations, the device 610 may further include a memory 614 that may be coupled to the processor 612 and capable of being accessed by the processor 612 and storing data therein. In some embodiments, the device 620 may also include a memory 624 that may be coupled to the processor 622 and be accessible by the processor 622 and store data therein. Each memory 614 and 624 may include various types of random-access memory (Random-Access Memory, RAM), such as dynamic RAM (Dynamic RAM, DRAM), static RAM (Static RAM, SRAM) and/or zero-capacitance RAM ( Zero-Capacitor RAM, Z-RAM). Alternatively, each memory 614 and 624 may include various types of read-only memory (Read-Only Memory, ROM), such as programmable ROM (Programmable ROM, PROM), erasable programmable ROM (Erasable Programmable ROM, EPROM) And/or Electrically Erasable Programmable ROM (Electrically Erasable Programmable ROM, EEPROM). Alternatively, each memory 614 and 624 may include various types of non-volatile RAM (Non-Volatile Random-Access Memory, NVRAM), such as flash memory (flash), solid-state memory (solid-state memory), ferroelectric RAM ( Ferroelectric RAM, FeRAM) and/or phase change memory.

Each of the device 610 and the device 620 may be a communication entity capable of communicating with each other using various schemes proposed by the present invention. For illustrative purposes and not limitation, a description of the functionality of device 610 as first device 110 and device 620 as second device 120 may be provided below. It is worth noting that although the examples described below are provided in the context of a particular wireless technology, such as Wi-Fi and Bluetooth, they are applicable to other wireless technologies as well.

Under the proposed solution according to the present invention, the processor 612 of the device 610 recognizes the occurrence of a coexistence scenario, wherein the coexistence scenario includes using the first wireless technology and the second wireless technology respectively in the wireless communication with the device 620 in frequency division duplex mode. Two wireless technologies transmit and receive simultaneously. In some implementations, the first wireless technology may include Bluetooth and the second wireless technology may include WiFi, or vice versa. Additionally, in response to identifying the occurrence of the coexistence scenario, processor 612 determines an upper limit on the transfer rate. The processor 612 transmits at or without the upper limit via the first transceiver 616 and the second transceiver 618 until the coexistence scenario ends.

In some implementations, in determining the upper limit of the transfer rate, processor 612 determines the upper limit of the transfer rate based on received signal strength indications of transfers from device 620 to device 610 .

In some implementations, processor 612 may perform operations in determining the upper limit of the transmission rate based on the received signal strength indication of the transmission from device 620 to device 610 . For example, processor 612 receives a signal from device 620, determines path loss by subtracting the received signal strength indication and a margin of error from the estimated transmit power of device 620, and determines whether the power level corresponding to the initial transmit rate is greater than Receive sensitivity requirements.

In some embodiments, in response to the power level corresponding to the initial transmission rate being less than the receive sensitivity requirement, or the upper limit being the lowest transmission rate among a plurality of possible transmission rates of the first device, when the first device When the second transceiver 618 of a device is transmitting using the second wireless technology, the processor 612 controls the first transceiver 616 of the first device to stop or avoid concurrent reception using the first wireless technology. For example, if the first wireless technology includes Bluetooth and the second wireless technology includes WiFi, the processor 612 may stop concurrent Bluetooth reception and WiFi transmission.

In some embodiments, in response to the power level corresponding to the initial transmission rate being less than the receive sensitivity requirement, or the upper limit being the lowest transmission rate among possible transmission rates for the first device, processor 612 will This wireless communication with device 620 is switched out of frequency division duplex mode. For example, processor 612 switches the wireless communication with device 620 to a time division duplex mode.

In some embodiments, in response to the power level corresponding to the initial transmission rate being less than the receive sensitivity requirement, or the upper limit being the lowest transmission rate among a plurality of possible transmission rates of the first device, during the coexistence In this scenario, the processor 612 continues to transmit at the initial transmission rate.

In some embodiments, in response to the power level corresponding to the initial transmission rate being greater than the receive sensitivity requirement, processor 612 sets the transmission rate for transmission in the coexistence scenario to the initial transmission rate or for a non-coexistence scenario The lower of the normal rates.

In some embodiments, when determining the upper limit of the transfer rate, the processor 612 determines the upper limit of the transfer rate based on a histogram of the number of packet successes or the number of packet failures associated with past communications of the second device.

In some implementations, processor 612 may perform certain operations in determining the upper limit of the transfer rate based on the histogram. For example, the processor 612 modifies the initial transmission rate based on the histogram, and sets the transmission rate for transmissions in the coexistence scenario to the lower one of the initial transmission rate or a normal rate for a non-coexistence scenario.

In some embodiments, when modifying the initial transfer rate based on the histogram, if the success rate according to the histogram is greater than a first threshold, the processor 612 increases the initial transfer rate; or if the success rate according to the histogram If the rate is less than a second threshold, the processor 612 reduces the initial transfer rate, wherein the second threshold is different from the first threshold.

Exemplary processing

FIG. 7 illustrates an exemplary process 700 according to an embodiment of the invention. Process 700 may be an exemplary implementation of the designs, concepts, schemes, systems and methods proposed above in accordance with the present invention. In particular, process 700 may represent an aspect of the proposed concepts and solutions related to the improvement of coexistence operation in FDD mode according to the present invention. Process 700 may include one or more operations, actions, or functions illustrated by one or more blocks 710 , 720 , and 730 . Although illustrated as separate blocks, the various blocks of process 700 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of process 700 may be performed in the order shown in FIG. 7, or may be performed in a different order. The blocks of process 700 may also be performed repeatedly or iteratively. Process 700 may be implemented by apparatus 610, apparatus 620, and/or any suitable device. Process 700 is described below in the context of device 610 as first device 110 and device 620 as second device 120 , but this is merely exemplary and not limiting. Process 700 may begin at block 710 .

At 710, process 700 may include processor 612 of device 610 identifying an occurrence of a coexistence scenario including using a first wireless technology and a second wireless technology, respectively, in wireless communication with device 620 in frequency division duplex mode. technology transmits and receives simultaneously, wherein the second wireless technology is different from the first wireless technology. In some implementations, the first wireless technology may include Bluetooth and the second wireless technology may include WiFi, or vice versa. Process 700 can proceed from 710 to 720 .

At 720, process 700 can include, in response to identifying an occurrence of the coexistence scenario, processor 612 determining an upper limit on the transfer rate. Processor 700 can proceed from 720 to 730 .

At 730, process 700 may include processor 612 transmitting via first transceiver 616 and second transceiver 618 at or without the upper limit until the coexistence scenario ends.

In some implementations, in determining the upper limit of the transfer rate, process 700 may include: processor 612 determining the upper limit of the transfer rate based on a received signal strength indication of a transfer from device 620 to device 610 .

In some implementations, in determining the upper limit of the transmission rate based on the received signal strength indication of the transmission from device 620 to device 610, process 700 may include that processor 612 may perform certain operations. For example, process 700 may include processor 612 receiving a signal from device 620, determining path loss by subtracting the received signal strength indication and a margin of error from the estimated transmit power of device 620, and determining Whether the power level of the receiver is greater than the receiver sensitivity requirement.

In some implementations, in response to the power level corresponding to the initial transmit rate being less than the receive sensitivity requirement, or the upper limit being the lowest transmit rate among possible transmit rates for the first device, process 700 may Including: when the second transceiver 618 of the first device transmits using the second wireless technology, the processor 612 controls the first transceiver 616 of the first device to stop or avoid concurrent reception using the first wireless technology . For example, if the first wireless technology includes Bluetooth and the second wireless technology includes WiFi, process 700 may include that the processor 612 may stop concurrent Bluetooth reception and WiFi transmission.

In some implementations, in response to the power level corresponding to the initial transmit rate being less than the receive sensitivity requirement, or the upper limit being the lowest transmit rate among a plurality of possible transmit rates for the first device, process 700 may include : Processor 612 switches the wireless communication with device 620 out of frequency division duplex mode. For example, process 700 can include processor 612 switching the wireless communication with device 620 to a time division duplex mode.

In some implementations, in response to the power level corresponding to the initial transmit rate being less than the receive sensitivity requirement, or the upper limit being the lowest transmit rate among possible transmit rates for the first device, process 700 may It includes: in the coexistence scenario, the processor 612 continues to transmit at the initial transmission rate.

In some implementations, in response to the power level corresponding to the initial transmission rate being greater than the receive sensitivity requirement, process 700 may include: processor 612 setting the transmission rate for transmission in the coexistence scenario to the initial transmission rate or The lower of the normal rates used for non-coexistence scenarios.

In some implementations, in determining the upper limit for the transfer rate, process 700 may include the processor 612 determining the transfer rate based on a histogram of the number of packet successes or the number of packet failures associated with past communications with the second device. The upper limit of the rate.

In some implementations, when determining the upper limit of the transfer rate based on the histogram, process 700 may include: Processor 612 may perform some operations. For example, process 700 may include: processor 612 modifying an initial transmission rate based on the histogram, and setting the transmission rate for transmissions in the coexistence scenario to the lower of the initial transmission rate or a normal rate for a non-coexistence scenario one of.

In some implementations, when modifying the initial transmission rate based on the histogram, process 700 may include: if the success rate according to the histogram is greater than a first threshold, the processor 612 increases the initial transmission rate; or if the success rate according to the histogram is greater than a first threshold; If the success rate of the histogram is less than a second threshold, the processor 612 reduces the initial transmission rate, wherein the second threshold is different from the first threshold.

Additional information

The presently described subject matter sometimes illustrates different components contained within, or connected to, different other components. It is to be understood that such described architectures are merely exemplary, and that other architectures can be implemented that achieve the same functionality. Conceptually, any arrangement of components to achieve the same functionality is effectively "associated" such that the desired functionality is achieved. Hence, any two components herein combined to achieve a particular functionality can be seen as "associated with" each other to achieve the desired functionality, regardless of architectures or intermediary components. Likewise, any two components so associated can also be considered to be "operably connected" or "operably coupled" to each other to achieve the desired functionality, and any two components capable of being so associated can also be considered to be each other. "Operatively coupleable to ground" to achieve the desired function. Specific examples of operably coupleable include, but are not limited to, physically mateable and/or physically interacting components and/or wirelessly interactable and/or wirelessly interactable components and/or logically interactable and/or logically interactable Interactive components.

Also, with respect to the use of substantially any plural and/or singular terms in the present invention, those skilled in the art can appropriately convert the plural to the singular and/or the singular to the plural depending on the context and/or application. For the sake of clarity, the present invention may explicitly set forth various singular/plural permutations.

Furthermore, those skilled in the art will appreciate that terms used in the present invention in general, and especially in claims (such as claim bodies), are generally intended to be "open-ended" terms, such as the term " "comprising" should be interpreted as "including but not limited to", the term "having" should be interpreted as "having at least", the term "comprising" should be interpreted as "including but not limited to" and so on. It will also be understood by those within the art that if a specific number of a claim recitation is intended, that intent will be expressly recited in the claim, and in the absence of such a recitation no such intent is present. For example, as an aid to understanding, claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, use of this phrase should not be construed to imply that introduction of a claim recitation by the indefinite article "a" or "an" limits any particular claim containing that introduced claim recitation to only those containing one of that recitation. Embodiments, even when the same claim includes the introductory phrase "one or more" or "at least one" and the indefinite article "a" or "an" (such as "a" and/or "an" should be interpreted means "at least one" or "one or more"); the same applies to the use of definite articles introducing claim recitations. In addition, even if a specific number of an introduced claim recitation is expressly recited, those skilled in the art should recognize that such recitation should be interpreted to mean at least the recited number (such as the statement "both recited things" without other modifiers means at least two statements or two or more statements). Furthermore, in instances where an idiom similar to "at least one of A, B, and C, etc." is used, generally such constructions are intended to convey the meaning of the idiom as understood by those skilled in the art, such as "has A, B and C" would include, but not be limited to, having only A, only B, only C, having A and B, having A and C, having B and C, and/or having A, B, and C And so on system. In instances where an idiom similar to "at least one of A, B, or C, etc." is used, generally such constructions are intended to express the meaning of the idiom as understood by those skilled in the art, such as "having A, B, or C A system of at least one of "will include, but is not limited to, having only A, only B, only C, having A and B, having A and C, having B and C, and/or having A, B and C, etc. system. Those skilled in the art will also understand that virtually any transitional word and/or phrase presenting two or more alternatives, whether in the specification, claims, or drawings, should be understood to include one, either, or both. item possibility. For example, the term "A or B" should be understood to include the possibilities of "A" or "B" or "A and B."

From the foregoing it should be understood that the present disclosure describes various embodiments of the invention for purposes of illustration and that various modifications may be made without departing from the scope and spirit of the invention. Accordingly, it is not intended to be limiting by the various embodiments disclosed, with the true scope and spirit being indicated by the claims.

Claims (21)

1. A method of coexistence operation improvement, comprising:

identifying, by a processor of a first apparatus, an occurrence of a coexistence scenario, wherein the coexistence scenario comprises simultaneous transmission and reception using a first wireless technology and a second wireless technology, respectively, in wireless communication with a second apparatus in a frequency division duplex mode, wherein the first wireless technology is different from the second wireless technology;

determining, by the processor, an upper limit of a transfer rate as an initial transfer rate in response to identifying the occurrence of the coexistence scene; and

transmitting, by the processor, at a transmission rate equal to or not exceeding the upper limit until the coexistence scene ends, wherein the transmission rate equal to or not exceeding the upper limit is a lower one selected from the initial transmission rate or a normal rate for a non-coexistence scene.

2. The method of coexistence operation improvement according to claim 1, wherein said determining said upper limit of said transmission rate comprises:

determining the upper limit of the transmission rate based on a received signal strength indication of a transmission from the second apparatus to the first apparatus.

3. The method of coexistence operation improvement according to claim 2, wherein said determining the upper limit for the transmission rate based on the received signal strength indication of the transmission from the second apparatus to the first apparatus comprises:

receiving a signal from the second device;

determining a path loss by subtracting the received signal strength indication and an error range from the estimated transmit power of the second apparatus; and

determining whether a power level corresponding to the initial transmission rate is greater than a receive sensitivity requirement based on the path loss.

4. The method of coexistence operation improvement according to claim 3, wherein in response to either the power level corresponding to the initial transmission rate being less than the receive sensitivity requirement or the upper limit being the lowest transmission rate of a plurality of possible transmission rates for the first apparatus, the method further comprises:

controlling a first transceiver of the first apparatus to stop or avoid concurrent reception using the first radio technology when a second transceiver of the first apparatus transmits using the second radio technology.

5. The method of coexistence operation improvement according to claim 4, wherein said first wireless technology and said second wireless technology comprise Bluetooth and wireless fidelity.

6. The method of coexistence operation improvement according to claim 3, wherein in response to either the power level corresponding to the initial transmission rate being less than the receive sensitivity requirement or the upper limit being the lowest transmission rate of a plurality of possible transmission rates for the first apparatus, the method further comprises:

switching the wireless communication with the second device out of the frequency division duplex mode.

7. The method of coexistence operation improvement according to claim 6, wherein said switching the wireless communication with the second apparatus out of the frequency-division duplex mode comprises:

switching the wireless communication with the second device to a time division duplex mode.

8. The method of coexistence operation improvement according to claim 3, wherein in response to either the power level corresponding to the initial transmission rate being less than the receive sensitivity requirement or the upper limit being a lowest transmission rate of a plurality of possible transmission rates for the first apparatus, the method further comprises:

continuing to transmit at the initial transmission rate in the coexistence scenario.

9. The method of coexistence operation improvement according to claim 3, wherein in response to said power level corresponding to said initial transmission rate being greater than said receive sensitivity requirement, said method further comprises:

setting a transmission rate for transmission in the coexistence scene to a lower one of the initial transmission rate or the normal rate for the non-coexistence scene.

10. The method of coexistence operation improvement according to claim 1, wherein said determining said upper limit of said transmission rate comprises:

determining the upper limit of the transmission rate based on a histogram of a number of packet successes or a number of packet failures associated with past communications of the second device.

11. The method of coexistence operation improvement according to claim 10, wherein said determining said upper limit for said transmission rate based on said histogram comprises:

modifying the initial transfer rate based on the histogram; and

setting a transmission rate for transmission in the coexistence scene to a lower one of the initial transmission rate or the normal rate for the non-coexistence scene.

12. The method of coexistence operation improvement according to claim 11, wherein said modifying said initial transmission rate based on said histogram comprises:

increasing the initial transmission rate if a success rate according to the histogram is greater than a first threshold; or alternatively

Reducing the initial transmission rate if the success rate according to the histogram is less than a second threshold, wherein the second threshold is different from the first threshold.

13. The method of coexistence operation improvement according to claim 1, wherein said first wireless technology and second wireless technology comprise bluetooth and wireless fidelity.

14. A first apparatus for coexistence operation improvement, comprising:

a first transceiver configured to wirelessly transmit and receive using a first wireless technology;

a second transceiver configured to wirelessly transmit and receive using a second wireless technology, wherein the first wireless technology is different from the second wireless technology; and

a processor coupled to and controlling the first transceiver and the second transceiver, the processor configured to:

identifying an occurrence of a coexistence scenario, wherein the coexistence scenario comprises simultaneous transmission and reception using the first and second wireless technologies, respectively, in wireless communication with a second apparatus in a frequency division duplex mode;

in response to identifying the occurrence of the coexistence scenario, determining an upper limit of a transmission rate as an initial transmission rate; and

transmitting, via the first transceiver and the second transceiver, at a transmission rate equal to or not exceeding the upper limit until the end of the coexistence scene, wherein the transmission rate equal to or not exceeding the upper limit is a lower one selected from the initial transmission rate or a normal rate for a non-coexistence scene.

15. The first apparatus of claim 14, wherein in determining the upper limit of the transmission rate, the processor is configured to determine the upper limit of the transmission rate based on a received signal strength indication of a transmission from the second apparatus to the first apparatus, comprising:

receiving a signal from the second device;

determining a path loss by subtracting the received signal strength indication and an error range from the estimated transmit power of the second apparatus; and

determining whether a power level corresponding to the initial transmission rate is greater than a receive sensitivity requirement based on the path loss.

16. The first apparatus of claim 15, wherein, in response to the power level corresponding to the initial transmission rate being less than the receive sensitivity requirement or the upper limit being a lowest transmission rate of a plurality of possible transmission rates for the first apparatus, the processor is further configured to perform a first operation, a second operation, or a third operation,

wherein the first operation comprises: control the first transceiver of the first apparatus to stop or avoid concurrent reception using the first radio technology when the second transceiver of the first apparatus transmits using the second radio technology,

the second operation includes: switching the wireless communication with the second apparatus out of the frequency division duplex mode, an

The third operation includes: continuing to transmit at the initial transmission rate in the coexistence scenario.

17. The first apparatus of claim 16, wherein the first wireless technology and the second wireless technology comprise bluetooth and wireless fidelity, wherein the switching the wireless communication with the second apparatus out of the frequency division duplex mode comprises:

switching the wireless communication with the second device to a time division duplex mode.

18. The first apparatus of claim 15, wherein in response to the power level corresponding to the initial transmission rate being greater than the receive sensitivity requirement, the processor is further configured to:

setting a transmission rate for transmission in the coexistence scene to a lower one of the initial transmission rate or the normal rate for the non-coexistence scene.

19. The first apparatus of claim 14, wherein in determining the upper limit of the transmission rate, the processor is configured to determine the upper limit of the transmission rate based on a histogram of a number of packet successes or a number of packet failures associated with past communications by the second apparatus, comprising:

modifying the initial transfer rate based on the histogram; and

setting a transmission rate for transmission in the coexistence scene to a lower one of the initial transmission rate or the normal rate for the non-coexistence scene.

20. The first apparatus of claim 19, wherein in modifying the initial transmission rate based on the histogram, the processor is configured to perform:

increasing the initial transmission rate if a success rate according to the histogram is greater than a first threshold; or

Reducing the initial transmission rate if the success rate according to the histogram is less than a second threshold, wherein the second threshold is different from the first threshold.

21. A computer readable storage medium storing program instructions which, when executed by a first apparatus, cause the first apparatus to perform the steps of the method of coexistence operation improvement according to any one of claims 1-13.

Images