WO2019024786A1

WO2019024786A1 - Communication method and network device

Info

Publication number: WO2019024786A1
Application number: PCT/CN2018/097468
Authority: WO
Inventors: 王飞; 何龙科; 徐立
Original assignee: 华为技术有限公司
Priority date: 2017-07-31
Filing date: 2018-07-27
Publication date: 2019-02-07
Also published as: CN109327250A

Abstract

Provided in the present application are a communication method and a network device. The method is applied in a multi-user multiple input and multiple output (MU-MIMO) system comprising a network device and a plurality of terminal devices to be scheduled. The method comprises: a network device obtains parameter information of a channel communicating with a first terminal device, wherein the first terminal device is one of the plurality of terminal devices to be scheduled, and the parameter information of the channel comprises at least two of spectral efficiency of the channel, a signal-to-interference-plus-noise ratio (SINR) of a sounding reference signal (SRS) transmitted on the channel, a rank number of the channel measured by the network device, a rank number of the channel reported by the terminal device, and a channel quality indicator (CQI) of the channel; and the network device determines, according to the parameter information of the channel, a number of channels communicating with the first terminal device. The embodiment of the present application can reasonably determine channel numbers and improve network performance.

Description

Communication method and network device

The present application claims priority to Chinese Patent Application No. JP-A No. No. No. No. No. No. No. No. No. No. No. No. No. No. No.

Technical field

The present application relates to the field of communications and, more particularly, to a communication method and network device.

Background technique

In a multi-user multiple input multiple output (MU-MIMO) system, in order to reduce cost and implement complexity, the number of channels scheduled by a typical network device is limited (for example, 4 channels or 8 channels). Therefore, it is important to properly select a limited channel resource when communicating with the terminal device.

In the prior art, the network device usually selects the number of channels to communicate with the terminal device based on a single indicator (for example, the number of ranks). For example, in downlink transmission, the number of layers measured by the terminal device is 2, that is, the air interface. The number of streams that can be supported is 2 streams, and the network device can select two channels to communicate with the terminal device.

In the actual application, there may be cases where the single indicator is not accurately measured. In this case, the number of channels selected by the network device to communicate with the terminal device may not be reasonable enough to affect network performance.

Summary of the invention

The present application provides a communication method and a network device, which can reasonably determine the number of channels for communication between a network device and a terminal device, and improve network performance.

In a first aspect, a communication method is provided, which is applied to a multi-user multiple-input multiple-output MU-MIMO system, the MU-MIMO system comprising a network device and a plurality of terminal devices to be scheduled, the method comprising:

The network device acquires parameter information of a channel that is in communication with the first terminal device, where the first terminal device is one of the plurality of terminal devices to be scheduled, and the parameter information of the channel includes at least two of the following parameters: The spectrum efficiency, the signal to interference plus noise ratio (SINR) of the sounding reference signal (SRS) transmitted by the network, the number of layers of the channel measured by the network device, and the layer of the channel reported by the terminal device And a channel quality indication (CQI) of the channel; the network device determines a number of channels to communicate with the first terminal device according to parameter information of the channel.

Therefore, in the embodiment of the present application, determining the number of channels that communicate with the terminal device by using multiple parameters can solve the above problem of determining a channel by using a single indicator. Even if an indicator is not accurate enough, the balance can be reduced by using multiple indicators. The impact of not being accurate can reasonably determine the number of channels and improve network performance.

It should be understood that, in the embodiment of the present application, a “channel” may refer to a general term for all devices passing between a baseband and an antenna radio frequency port; a transmission channel is a general term for all devices that pass through the baseband and before the antenna port; The receiving channel is a general term for all the devices that pass through the antenna port and before the baseband. As shown in Figure 2, the network device can include M channels, usually one channel is connected to one antenna, and one channel can include one transmitting channel. (TX) and a receiving channel (RX), a channel through which the antenna can be connected to both the transmitting channel and the receiving channel. For example, in the case of a TDD system, at a certain time, the channel can transmit or receive signals through an antenna connected thereto.

It should be understood that, in the embodiment of the present application, the “channel” may also include the foregoing transceiver channel and the antenna connected to the transceiver channel. In this case, the “channel” may also be referred to as “antenna”. Limited to this.

The network device in the embodiment of the present application may include multiple channels. The number of channels that the network device schedules at one time is limited. For example, the number of channels scheduled by the network device at one time is 4 channels or 8 channels. It should be understood that the network device is scheduled once. The number of the channels may be equal to the number of channels owned by the network device, and may be smaller than the number of channels owned by the network device. The embodiment of the present application is not limited thereto.

It should be understood that the primary scheduling of the network device may be scheduling uplink transmission, or scheduling downlink transmission. When the network device schedules uplink transmission, the network device determines a receiving channel that communicates with the terminal device, and when scheduling downlink transmission, the network device determines and the terminal. The transmission channel for device communication.

Optionally, in an implementation manner of the first aspect, the network device determines, according to parameter information of the channel, a number of channels that communicate with the first terminal device, including:

Determining, by the network device, the number of channels corresponding to each parameter in the parameter information of the channel from the predefined mapping relationship according to the parameter information of the channel;

The network device uses a fusion algorithm to determine the number of channels to communicate with the terminal device according to the number of channels corresponding to the respective parameters.

Specifically, each of the parameters corresponds to a predefined mapping relationship, and the predefined mapping relationship corresponding to each parameter may include a correspondence between the value of the parameter and the corresponding channel number. The network device may determine the number of channels corresponding to each parameter from the corresponding mapping relationship according to the value of each parameter.

It should be understood that the number of channels corresponding to the value of the parameter in the mapping relationship of each parameter may be preset by the system, or may be manually determined according to experience. The embodiment of the present application is not limited thereto.

After determining the channel corresponding to each parameter, the network device adopts a fusion algorithm, and determines the number of channels that communicate with the terminal device according to the number of channels corresponding to the respective parameters.

For example, the network device can employ a weighting algorithm to determine the number of channels to communicate with the terminal device.

It should be understood that in practical applications, there are usually many terminal devices to be scheduled in MU-MIMO communication, and the network device can only schedule some terminal devices in one scheduling. The network device may sequentially determine the number of channels used when communicating with the first terminal device to the ith terminal device according to the method described in FIG. 3 according to the priority of the terminal device, until the network device determines and determines The sum of the number of channels communicated by the terminal device to the ith terminal device is equal to the total number of channels scheduled by the network device in a single time, and then the network device simultaneously connects with the first terminal according to the channel corresponding to the first terminal device to the ith terminal device The device communicates with the ith terminal device. The method of communication of the embodiment of the present application is described in detail below with reference to the specific example of FIG.

Optionally, in an implementation manner of the first aspect, the plurality of terminal devices to be scheduled are N, and the nth terminal device of the N to-be-scheduled terminal devices has a higher priority than the nth +1 terminal device, N is an integer greater than or equal to 2, 1 ≤ n ≤ N-1, the method further includes:

Determining, by the network device, the number of channels communicating with the ith terminal device according to the parameter information of the channel communicated with the ith terminal device, in order of priority, until the network device determines the first terminal device to the ith terminal device The sum of the number of channels of communication is equal to the total number of channels scheduled by the network device in a single time, 2 ≤ i < N.

It should be understood that the priority of the terminal device may be determined in multiple manners in the embodiment of the present application. For example, the network device may determine the priority of the terminal device according to the PF criterion, or the network device determines the priority of the terminal device according to the service requirement or the service type. The embodiment of the present application is not limited thereto.

Optionally, in an implementation manner of the first aspect, the method further includes: the network device simultaneously connecting the first terminal device to the i-th channel according to the channel corresponding to the first terminal device to the i-th terminal device Terminal device communication.

Specifically, in the uplink scheduling, the network device may receive the uplink data sent by the first to the ith terminal devices through the channels (receiving channels) corresponding to the first to the ith terminal devices. Alternatively, during downlink scheduling, the network device may send downlink data to the first to ith terminal devices through channels (transmit channels) corresponding to the first to the ith terminal devices.

In a second aspect, a network device is provided for performing the method in any of the above first aspect, the first aspect of the first aspect. In particular, the network device comprises means for performing the above method.

In a third aspect, there is provided a computer readable medium having stored thereon a computer program, which when executed by a computer, implements the method of any of the possible implementations of the first aspect, the first aspect.

In a fourth aspect, a computer program product is provided, the computer program product being implemented by a computer to implement the method of any of the possible implementations of the first aspect, the first aspect.

A fifth aspect, a processing apparatus, including a processor and an interface, is provided, and the processor is configured to perform the method in any one of the foregoing first aspect, the first aspect.

It should be understood that the processing device in the foregoing fifth aspect may be a chip, and the processor may be implemented by using hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; When implemented by software, the processor can be a general purpose processor, which is implemented by reading software code stored in the memory. The memory can be integrated in the processor and can exist independently of the processor.

DRAWINGS

FIG. 1 is a schematic diagram of a system scenario applicable to an embodiment of the present application.

2 is a schematic diagram of a channel in accordance with one embodiment of the present application.

FIG. 3 is a schematic flowchart of a communication method according to an embodiment of the present application.

FIG. 4 is a schematic flowchart of a communication method according to another embodiment of the present application.

FIG. 5 is a schematic diagram of a network device and a terminal device according to an embodiment of the present application.

FIG. 6 is a schematic diagram of communication between a network device and a terminal device according to an embodiment of the present application.

FIG. 7 is a schematic block diagram of a network device according to an embodiment of the present application.

FIG. 8 is a schematic block diagram of a network device according to another embodiment of the present application.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The embodiments of the present application are applicable to various communication systems, and therefore, the following description is not limited to a specific communication system. For example, the embodiment of the present application can be applied to a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, and a wideband code division multiple access (WCDMA) system. System, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunication system (UMTS), wireless local area networks (WLAN), wireless fidelity (WiFi), and next-generation communication systems, the fifth generation (5th generation, 5G) communication system, for example, a new radio (NR) system.

The terminal equipment in the embodiment of the present application may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, A wireless communication device, user agent, or user device. The terminal device may be a station in the WLAN, which may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital processing (personal Digital assistant (PDA) device, handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, and next-generation communication system, for example, fifth-generation communication (fifth-generation, 5G) a terminal device in a network or a terminal device in a public land mobile network (PLMN) network that is evolving in the future.

The network device may be a device for communicating with the mobile device, such as a network device, and the network device may be an access point (AP) in a WLAN, a global system of mobile communication (GSM), or a code division multiple access. A base transceiver station (BTS) in a code division multiple access (CDMA), which may also be a base station (nodeB, NB) in wideband code division multiple access (WCDMA), or may be a long term evolution An evolved base station (evolutional node B, eNB/eNodeB) in a long term evolution (LTE), or a relay station or an access point, or an in-vehicle device, a wearable device, and a network side device in a future 5G network, for example, an NR system Medium transmission point (TRP or TP), base station (gNB) in the NR system, one or a group of base stations (including multiple antenna panels) in the 5G system, and the like. This embodiment of the present application is not particularly limited.

FIG. 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application. The communication system can be any of the above communication systems. As shown in FIG. 1, the communication system 100 includes a network device 102, which may include one antenna or multiple antennas such as

antennas

104, 106, 108, 110, 112, and 114. Additionally, network device 102 may additionally include a transmitter chain and a receiver chain, as will be understood by those of ordinary skill in the art, which may include multiple components related to signal transmission and reception (eg, processor, modulator, multiplexer) , demodulator, demultiplexer or antenna, etc.).

Network device 102 can communicate with a plurality of terminal devices, such as terminal device 116 and terminal device 122. However, it will be appreciated that network device 102 can communicate with any number of terminal devices similar to terminal device 116 or terminal device 122. Terminal devices 116 and 122 may be, for example, cellular telephones, smart phones, portable computers, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and/or any other suitable for communicating over wireless communication system 100. device.

Specifically, the network device can perform wireless communication with a plurality of terminal devices by using a multi-user multiple input multiple output (MU-MIMO).

As shown in FIG. 1, terminal device 116 is in communication with

antennas

112 and 114, wherein

antennas

112 and 114 transmit information to terminal device 116 over a forward link (also referred to as downlink) 118 and through the reverse link (also Information referred to as uplink 120 receives information from terminal device 116. In addition, terminal device 122 is in communication with

antennas

104 and 106, wherein

antennas

104 and 106 transmit information to terminal device 122 over forward link 124 and receive information from terminal device 122 over reverse link 126.

For example, in a frequency division duplex (FDD) system, for example, forward link 118 can use a different frequency band than reverse link 120, and forward link 124 can be used differently than reverse link 126. Frequency band.

As another example, in a time division duplex (TDD) system and a full duplex system, the forward link 118 and the reverse link 120 can use a common frequency band, a forward link 124, and a reverse link. Link 126 can use a common frequency band.

Each antenna (or set of antennas consisting of multiple antennas) and/or regions designed for communication is referred to as a sector of network device 102. For example, the antenna group can be designed to communicate with terminal devices in sectors of the network device 102 coverage area. The network device can transmit signals to all of the terminal devices in its corresponding sector through a single antenna or multiple antenna transmit diversity. In the course of network device 102 communicating with terminal devices 116 and 122 via

forward links

118 and 124, respectively, the transmit antenna of network device 102 may also utilize beamforming to improve the signal to noise ratio of

forward links

118 and 124. Moreover, when the network device 102 utilizes beamforming to transmit signals to the randomly dispersed terminal devices 116 and 122 in the associated coverage area, as compared to the manner in which the network device transmits signals to all of its terminal devices through single antenna or multi-antenna transmit diversity, Mobile devices in neighboring cells are subject to less interference.

At a given time, network device 102, terminal device 116, or terminal device 122 may be a wireless communication transmitting device and/or a wireless communication receiving device. When transmitting data, the wireless communication transmitting device can encode the data for transmission. In particular, the wireless communication transmitting device may acquire (eg, generate, receive from other communication devices, or store in memory, etc.) a certain number of data bits to be transmitted over the channel to the wireless communication receiving device. Such data bits may be included in a transport block (or multiple transport blocks) of data that may be segmented to produce multiple code blocks.

As explained above, in a MU-MIMO system such as that shown in FIG. 1, a network device generally selects the number of channels to communicate with a terminal device based on a single indicator (eg, number of ranks), but may exist in practical applications. The single indicator is not accurate. In this case, the number of channels selected by the network device to communicate with the terminal device may not be reasonable enough to affect network performance.

The embodiment of the present application subtly proposes a communication method, which determines the number of channels that communicate with the terminal device by using multiple parameters, and can solve the above problem of determining a channel by using a single indicator, and improve network performance.

In order to make the embodiments of the present application easier to understand, the following is a description of some of the nouns in the present application, and the description should not be construed as limiting the scope of the claimed invention.

“Channel” means the general name of all the devices passing between the baseband and the antenna RF port; the transmitting channel is the general name of all the devices that pass after the signal is sent from the baseband to the antenna port; the receiving channel is the signal after entering from the antenna port. Before the baseband, the general name of all the devices passed; as shown in Figure 2, the network device can include M channels, that is, channel 1 to channel M, usually one channel is connected to one antenna, that is, channel 1 to channel M are respectively antennas 1 to the antenna M is connected, one channel may include one transmitting channel (TX) and one receiving channel (RX), and one channel can transmit signals through the transmitting channel or receive signals through the receiving channel through the antenna connected thereto. For example, in the case of a TDD system, at a certain time, the channel can transmit or receive signals through an antenna connected thereto.

Hereinafter, for convenience of understanding and explanation, the execution process and actions of the communication method in the present application in the communication system will be described by way of example and not limitation.

FIG. 3 is a schematic flowchart of a communication method 300 according to an embodiment of the present application. The method shown in FIG. 3 can be applied to a communication system supporting MU-MIMO as shown in FIG. 1, which includes a network device and a plurality of terminal devices to be scheduled. The method shown in FIG. 3 can be performed by a network device. Specifically, the method 300 shown in FIG. 3 includes:

310. The network device acquires parameter information of a channel that is in communication with the first terminal device.

Specifically, the first terminal device is one of the plurality of terminal devices to be scheduled, and the parameter information of the channel includes at least two of the following parameters: a spectrum efficiency of the channel, and a sounding reference signal SRS of the channel transmission. a letter drying ratio SINR, a number of layers of the channel measured by the network device, a number of layers of the channel reported by the terminal device, and a channel quality indicator CQI of the channel;

It should be understood that the parameter information of the channel in the embodiment of the present application may further include a modulation and coding mode, the MCS, and the like, and the embodiment of the present application is not limited thereto.

Some of the above parameters may be determined by the network device itself, for example, the spectral efficiency of the channel, the signal drying ratio SINR of the sounding reference signal SRS transmitted by the channel, and the number of layers of the channel measured by the network device. The other part of the parameter may be determined by the network device according to the reporting by the terminal device, for example, the number of layers of the channel reported by the terminal device and the channel quality indication CQI and MCS of the channel, and the embodiment of the present application is not limited thereto.

320. The network device determines, according to parameter information of the channel, a number of channels that communicate with the first terminal device.

Optionally, as another embodiment, the network device determines, according to the parameter information of the channel, a number of channels corresponding to each parameter in the parameter information of the channel from a predefined mapping relationship;

For example, as shown in Table 1, the mapping relationship between the number of layers of the channel, the spectral efficiency, and the SRS SINR and the number of channels is shown.

Table 1

It should be understood that only the mapping relationship of the three parameters is shown in the table 1 , but the embodiment of the present application is not limited thereto, and the mapping relationship of other parameters is similar to that of the present embodiment.

For example, the network device can employ a weighting algorithm to determine the number of channels to communicate with the terminal device. Specifically, taking the three parameters of the layer number, the spectrum efficiency, and the SRS SINR as an example, the values of the three parameters of the channel that the network device communicates with the first terminal device are respectively a layer number of 1, the spectrum efficiency is 0.8, and the SRS SINR If it is 2.5, then according to the mapping relationship shown in Table 1, it can be determined that the number of layers, the spectral efficiency, and the number of channels corresponding to the SRS SINR are 1, 4, and 4, respectively, and then the final channel number can be determined according to the formula aX+bY+cZ. Where a, b and c are weighting coefficients, for example, a = 0.2, b = 0.5, and c = 0.3. X represents the number of channels corresponding to the number of layers, Y represents the number of channels corresponding to the frequency offset efficiency, and Z represents the number of channels corresponding to the SRS SINR, so 1*0.2+4*0.5+4*0.3=3.4 can be calculated according to the above formula. In the embodiment of the present application, the value determined by the above formula may be rounded up, and therefore, the final channel number may be determined to be 4.

It should be understood that, in the embodiment of the present application, the weight of each parameter may be flexibly adjusted according to the actual situation, as long as the sum of the weights of all the selected parameters is 1. The embodiment of the present application is not limited thereto.

The embodiments of the present application comprehensively consider the comprehensive effects of factors such as spectrum efficiency. According to Table 1, it can be seen that users with lower spectrum efficiency can achieve significant throughput improvement by increasing the number of channels, while the spectrum efficiency is higher or the channel conditions are better. The user of the present application, while reducing its channel allocation number, increases its scheduling opportunities, so the embodiment of the present application ensures the performance of the near-term user.

In addition, for the edge user, the channel condition is often poor. In this case, the number of measurement layers or the reported Rank is lower, for example, 1. According to the prior art, if the number of ports is allocated based on this, that is, 1 channel is allocated, Guarantee the transmission performance of this user. However, the present invention no longer only uses the number of layers as the only indicator of port allocation, but considers other factors at the same time. In this case, the number of channels determined by multiple parameters may be greater than 1, for example, the number of layers, spectral efficiency, and SRS SINR in the above example. The number of corresponding channels is 1, 4, and 4, respectively. Although the number of layers is 1, the number of channels that the network device determines to communicate with the terminal device is 4. Therefore, the embodiment of the present application can effectively improve the throughput of the user. Improve the user presence of marginal users.

Specifically, the method 400 shown in FIG. 4 may be performed by a network device, and the specific method 400 includes:

410: Poll all the terminal devices to be scheduled.

For example, as shown in FIG. 5, the number of terminal devices to be scheduled is N, and the network device may poll the terminal device to be scheduled according to the priority of the terminal device according to the priority from high to low. Assuming that the priorities of the first terminal device to the Nth terminal device are sequentially decreased, the network device first starts from the first terminal device and performs the subsequent steps. Then the second terminal device.. waits until the number of channels corresponding to the first i terminal devices is the total number of channels scheduled by the network device at one time. It should be understood that N is an integer greater than or equal to 2, and when N is greater than 3, for the sake of brevity, only the first to third terminal devices among the N terminal devices are shown in FIG. 5, wherein the first terminal device to the third terminal device The terminal devices are respectively located in the cell far away from the network device. The fourth to Nth terminal devices are not shown in FIG.

420. Count parameter information of a channel that communicates with the current terminal device.

Specifically, the parameter information of the channel includes at least two of the following parameters: a spectral efficiency of the channel, a signal dryness ratio SINR of the sounding reference signal SRS transmitted by the channel, a layer number of the channel measured by the network device, and a terminal device reporting The number of layers of the channel and the channel quality of the channel indicate CQI.

For example, the parameter information of the channel includes three parameters of the number of layers of the channel, the spectral efficiency, and the SRS SINR.

When the current terminal device is the first terminal device to the third terminal device, the values of the corresponding three parameters are as shown in Table 2.

Table 2

430. The network device determines a number of channels corresponding to each parameter in the parameter information of the channel.

Specifically, the network device determines, according to the parameter information of the channel, the number of channels corresponding to each parameter in the parameter information of the channel from a predefined mapping relationship.

For example, the network device may determine the number of channels corresponding to each parameter in the parameter information of the channel according to the correspondence between the parameter and the number of channels as shown in Table 1.

For example, the parameter information of the channel includes the number of layers of the channel, the spectrum efficiency, and the SRS SINR. For example, when the current terminal device is the first terminal device to the third terminal device, the number of channels corresponding to the three parameters is as follows. 3 is shown.

table 3

440. Determine a number of channels that communicate with the current terminal device by using a fusion algorithm.

For example, the network device uses a weighting algorithm to determine the number of channels to communicate with the current terminal device. For example, the weights for setting the Rank, spectrum efficiency, and SRS SINR to the number of port assignments are 0.2, 0.5, and 0.3, respectively. Then, as shown in Table 4, the network device can determine that the current terminal device is the first terminal device to the third terminal device, and the determined number of channels is 4, 2, and 2, respectively. It should be understood that, in Table 4, when the determined number of channels is a decimal, the rounding process is performed, but the embodiment of the present application is not limited thereto. For example, the method may be rounded down or rounded. Determine the final number of channels.

Table 4

	最终的通道数目Final number of channels
第1终端设备Terminal device	4(10.2+40.5+40.3＝3.4)4(10.2+40.5+40.3=3.4)
第2终端设备Terminal device	2(20.2+20.5+10.3＝1.7)2(20.2+20.5+10.3=1.7)
第3终端设备Terminal device	2(40.2+10.5+10.3＝1.6)2(40.2+10.5+10.3=1.6)

450. Determine whether the sum of the number of channels corresponding to the first terminal device to the current terminal device is equal to the total number of channels scheduled by the network device at one time.

If yes, step 460 is performed, and if no, step 410 is performed.

For example, the total number of channels scheduled by the network device is 8 channels. For example, the number of channels corresponding to the first terminal device that is first queried is 4 channels, which is smaller than the total number of channels scheduled for one time. Therefore, for the first terminal device, After step 450 is performed, step 410 is continued to query the second terminal device. The number of channels corresponding to the second terminal device is determined to be two channels, and the sum of the channels corresponding to the first two terminal devices is six channels, which is also smaller than the total number of channels scheduled for one time. Therefore, for the second terminal device, the steps are performed. After 450, proceed to step 410 to inquire about the third terminal device. The number of channels corresponding to the third terminal device is determined to be two channels, and the sum of the channels corresponding to the first three terminal devices is eight channels, which is equal to the total number of channels scheduled at one time. Therefore, for the third terminal device, after step 450 is performed, step 460 is followed.

460, the port assignment ends.

Specifically, after the port assignment ends, the network device can simultaneously communicate with the first terminal device to the third terminal device according to the channel corresponding to the first terminal device to the third terminal device.

For example, as shown in FIG. 6, the following line transmission is taken as an example, and the network device can simultaneously transmit downlink data to the first terminal device, the second terminal device, and the third terminal device by using four channels, two channels, and two channels, respectively.

It should be understood that FIG. 6 is merely exemplary. In the same manner as shown in FIG. 6, one channel corresponds to one transmit beam, but the embodiment of the present application is not limited thereto.

It should also be understood that only the case of downlink transmission is shown in FIG. 6. Similarly, for uplink transmission, the network device may determine the uplink data transmitted by the receiving channel by the receiving channel by using a similar method as described above.

It should be understood that, in the embodiment of the present application, after the network device determines the number of channels (for example, 2 channels) that communicate with a certain terminal device, the network device may determine according to parameters such as energy, transmit performance, or receiving performance of the beam. The two channels are specifically used to communicate with the terminal device, which is not limited in this embodiment.

It should be noted that the examples of the above embodiments are only intended to help those skilled in the art to understand the embodiments of the present application, and the embodiments of the present application are not limited to the specific numerical values or specific examples illustrated. A person skilled in the art will be able to make various modifications or changes in the embodiments according to the examples given above, and such modifications or variations are also within the scope of the embodiments of the present application.

For example, when the network device determines that the sum of the number of channels corresponding to the first i terminal devices is less than the total number of channels scheduled by the network device at one time, but determines that the sum of the number of channels corresponding to the first i+1 terminal devices is greater than the total number of channels scheduled by the network device at one time, For example, the total number of channels scheduled at one time is 8 channels, and the total number of channels corresponding to the first to third terminal devices is 7 channels. If the 4th terminal device corresponds to 2 channels, the network device continues to query the terminal device until a corresponding device is found. The terminal device of one channel, for example, the number of channels corresponding to the fifth terminal device is one channel, and the terminal devices scheduled by the network device at one time are the first to third terminal devices and the fifth terminal device. The fourth terminal device will be scheduled at the next scheduling.

For example, in the current MU-MIMO system, the terminal device to be scheduled is only three terminal devices, and after the network device queries the three terminal devices, the total number of channels corresponding to the three terminal devices is seven channels, which is less than one scheduling. The total number of the channels is 8. In this case, the network device in the embodiment of the present application may allocate one more channel to one of the terminal devices according to a preset rule. The embodiments of the present application are not limited thereto.

It should be understood that the size of the sequence numbers of the above processes does not imply a sequence of executions, and the order of execution of the processes should be determined by its function and internal logic, and should not be construed as limiting the implementation process of the embodiments of the present invention.

The method for communication according to the embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 6. The network device of the embodiment of the present application will be described in detail below with reference to FIG. 7 to FIG.

FIG. 7 shows a schematic block diagram of a network device 700 according to an embodiment of the present application. Specifically, as shown in FIG. 7, the network device 700 includes a processing unit 710 and a transceiver unit 720.

Specifically, the processing unit is configured to acquire parameter information of a channel that is in communication with the first terminal device, where the first terminal device is one of the multiple scheduled terminal devices, and the parameter information of the channel includes at least two of the following parameters. Spectral efficiency of the channel, the signal-to-dry ratio SINR of the sounding reference signal SRS transmitted by the channel, the number of layers of the channel measured by the network device, the number of layers of the channel reported by the terminal device, and the channel quality indicator CQI of the channel; And determining, according to the channel state information, a number of channels that communicate with the first terminal device.

Therefore, in the embodiment of the present application, determining the number of channels that communicate with the terminal device by using multiple parameters can solve the problem of determining a channel by using a single indicator. Even if an indicator is not accurate enough, the balance of multiple indicators can reduce an indicator. Accurate impact can reasonably determine the number of channels and improve network performance.

Optionally, in another embodiment, the processing unit is configured to determine, according to the channel state information, a number of channels corresponding to each parameter in the information state information from a predefined mapping table, and use a weighting algorithm to correspond to each parameter. The number of channels that determine the number of channels that communicate with the terminal device.

Optionally, as another embodiment, the plurality of terminal devices to be scheduled are N, wherein the nth terminal device of the N to-be-scheduled terminal devices has a higher priority than the (n+1)th terminal device. The processing unit is further configured to: determine, according to the parameter information of the channel communicated with the ith terminal device, the number of channels that communicate with the ith terminal device according to the order of priority, until the network device determines the first terminal device The sum of the number of channels to be communicated to the ith terminal device is equal to the total number of channels scheduled by the network device in a single time, 2 ≤ i < N.

Optionally, in another embodiment, the transceiver unit is configured to simultaneously communicate with the first terminal device to the ith terminal device according to a channel corresponding to the first terminal device to the ith terminal device.

Optionally, as another embodiment, the total number of channels scheduled by the network device in a single time is 4 channels or 8 channels.

It should be understood that the network device 700 shown in FIG. 7 can implement various processes related to the network device in the method embodiments of FIG. 2 to FIG. The operations and/or functions of the various modules in the network device are respectively implemented in order to implement the corresponding processes in the method embodiments in FIGS. 2 to 6. For details, refer to the description in the foregoing method embodiments. To avoid repetition, the detailed description is omitted here.

FIG. 8 shows a schematic block diagram of a network device 800 in accordance with an embodiment of the present application. Specifically, as shown in FIG. 8, the network device 800 includes a processor 810 and a transceiver 820. The processor 810 is connected to the transceiver 820. Optionally, the network device 800 further includes a memory 830, a memory 830 and a processor. The 810 is connected, wherein the processor 810, the memory 830, and the transceiver 820 communicate with each other through an internal connection path to transfer control and/or data signals. The memory 830 can be used to store instructions, the processor 810 is configured to execute instructions stored in the memory 830, control the transceiver 820 to receive information or signals, and the controller 810 can execute the instructions in the memory 830 to complete the above FIG. 2 to FIG. 6 Method embodiments relate to various processes of a network device. To avoid repetition, we will not repeat them here.

It should be understood that the network device 800 can correspond to the network device 700 of FIG. 7 described above. The functions of the processing unit 710 in the network device 700 can be implemented by the processor 810, and the functions of the transceiver unit 720 can be implemented by the transceiver 820.

It should be noted that the processor (eg, processor 810 in FIG. 8) in the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In the implementation process, each step of the foregoing method embodiments may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The above processor may be a general purpose processor, a digital signal processor (DSP), an application specific integrated crucit (ASIC), a field programmable gate array (FPGA) or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.

It is to be understood that the memory (e.g., memory 830 in FIG. 8) in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory. The volatile memory can be a random access memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), double data rate synchronous DRAM (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronously connected dynamic random access memory (synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (DR RAM). It should be noted that the memories of the systems and methods described herein are intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the present application further provides a computer readable medium having stored thereon a computer program, the method of implementing communication of any of the foregoing method embodiments when the computer program is executed by a computer.

The embodiment of the present application further provides a computer program product, which is a method for implementing communication of any of the foregoing method embodiments when executed by a computer.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions according to embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be wired from a website site, computer, server or data center (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.) to another website site, computer, server or data center. The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium can be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD) ))Wait.

It should be understood that the foregoing processing device may be a chip, and the processor may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software The processor can be a general purpose processor, which is implemented by reading software code stored in the memory. The memory can be integrated in the processor and can exist independently of the processor.

Additionally, the terms "system" and "network" are used interchangeably herein. The term "and/or" in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that in the embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, for clarity of hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by hardware implementation, firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a computer. By way of example and not limitation, computer readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used for carrying or storing in the form of an instruction or data structure. The desired program code and any other medium that can be accessed by the computer. Also. Any connection may suitably be a computer readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwave are included in the fixing of the associated media. As used herein, a disk and a disc include a compact disc (CD), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disc, and a Blu-ray disc, wherein the disc is usually magnetically replicated, and the disc is The laser is used to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.

In summary, the above description is only a preferred embodiment of the technical solution of the present application, and is not intended to limit the scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application are intended to be included within the scope of the present application.

Claims

A communication method, characterized in that the method is applied to a multi-user multiple-input multiple-output MU-MIMO system, the MU-MIMO system comprising a network device and a plurality of terminal devices to be scheduled, the method comprising:

The network device acquires parameter information of a channel that is in communication with the first terminal device, where the first terminal device is one of the plurality of terminal devices to be scheduled, and the parameter information of the channel includes at least two of the following parameters: The spectral efficiency of the channel, the signal drying ratio SINR of the sounding reference signal SRS transmitted by the channel, the number of layers of the channel measured by the network device, the number of layers of the channel reported by the terminal device, and the channel quality of the channel Indicating CQI;

The network device determines, according to parameter information of the channel, a number of channels that communicate with the first terminal device.
The method of claim 1 wherein

Determining, by the network device, the number of channels that communicate with the first terminal device according to the parameter information of the channel, including:

Determining, by the network device, the number of channels corresponding to each parameter in the parameter information of the channel from a predefined mapping relationship according to the parameter information of the channel;

The network device uses a fusion algorithm to determine the number of channels that communicate with the terminal device according to the number of channels corresponding to the respective parameters.
The method according to claim 1 or 2, wherein the number of the plurality of terminal devices to be scheduled is N, wherein the nth terminal device of the N to-be-scheduled terminal devices has a higher priority The n+1th terminal device, where N is an integer greater than or equal to 2, 1≤n≤N-1, the method further includes:

Determining, by the network device, the number of channels communicating with the ith terminal device according to the parameter information of the channel communicated with the ith terminal device, in order of priority, until the network device determines the first terminal device to the ith The sum of the number of channels communicated by the terminal device is equal to the total number of channels scheduled by the network device in a single time, 2≤i<N.
The method of claim 3, wherein the method further comprises:

The network device simultaneously communicates with the first terminal device to the ith terminal device according to a channel corresponding to the first terminal device to the ith terminal device.
The method according to any one of claims 1 to 4, characterized in that

The total number of channels scheduled by the network device in a single time is 4 channels or 8 channels.
A network device, which is characterized in that it is applied to a multi-user multiple-input multiple-output MU-MIMO system, where the MU-MIMO system includes the network device and a plurality of terminal devices to be scheduled, and the network device includes:

Processing unit and transceiver unit,

The processing unit is configured to acquire parameter information of a channel that is in communication with the first terminal device, where the first terminal device is one of the multiple scheduled terminal devices, and the parameter information of the channel includes at least one of the following parameters: Two types: the spectral efficiency of the channel, the signal dry ratio SINR of the sounding reference signal SRS transmitted by the channel, the number of layers of the channel measured by the network device, the number of layers of the channel reported by the terminal device, and the channel Channel quality indication CQI;

And determining, according to the channel state information, a number of channels that communicate with the first terminal device.
A network device according to claim 6, wherein

The processing unit is specifically configured to determine, according to the channel state information, a number of channels corresponding to each parameter in the information state information from a predefined mapping table;

A weighting algorithm is used to determine the number of channels that communicate with the terminal device according to the number of channels corresponding to the respective parameters.
The network device according to claim 6 or 7, wherein the plurality of terminal devices to be scheduled are N, wherein the nth terminal device among the N to-be-scheduled terminal devices has a high priority In the (n+1)th terminal device, the processing unit is further configured to:

Determining the number of channels communicating with the ith terminal device according to the parameter information of the channel communicated with the ith terminal device in the order of priority from high to low, until the network device determines to communicate with the first terminal device to the ith terminal device The sum of the number of channels is equal to the total number of channels scheduled by the network device in a single time, 2 ≤ i < N.
A network device according to claim 8, wherein

The transceiver unit is configured to simultaneously communicate with the first terminal device to the ith terminal device according to a channel corresponding to the first terminal device to the ith terminal device.
A network device according to any one of claims 6 to 9, characterized in that

The total number of channels scheduled by the network device in a single time is 4 channels or 8 channels.