Joint transmission method, network equipment, device and storage medium

Abstract

The invention provides a joint transmission method, and relates to the technical field of communication. According to the specific implementation scheme, under the condition that it is determined that a terminal is a terminal with the capability of coordinated multi-point transmission (CoMP) and a cooperative cell is configured with a channel sounding reference signal (SRS), whether downlink joint transmission (JT) is executed on a service cell and the cooperative cell or not is determined according to a current first forming gain value. Therefore, whether the downlink joint transmission JT is executed on the service cell and the cooperative cell is determined based on the first forming gain value, so that the transmission rate of the system is ensured and the performance of the system is improved while the spectrum efficiency of the system is improved by using the JT transmission.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a joint transmission method, network equipment, device and storage medium. Background Art

[0002] In the communication system, the prior art usually uses the power difference between the serving cell and the cooperative cell as the basis for determining whether to perform downlink joint transmission (Joint Transmission, JT). However, the data streams of each transmission reception point (Transmission Reception Point, TRP) of the joint transmission are prone to inter-stream interference, thereby reducing the system transmission rate. Summary of the invention

[0003] The first aspect of the present application provides a joint transmission method, which includes:

[0004] When it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the collaborative cell has been configured with a channel sounding reference signal SRS, it is determined whether to perform downlink joint transmission JT on the serving cell and the collaborative cell based on the current first bundling gain value, wherein the first bundling gain value is the bundling gain value of JT relative to the channel state information reference signal CSI-RS in single cell transmission.

[0005] Optionally, the process of determining the first shaping gain includes:

[0006] Determine a second shaping gain of the JT relative to a single-cell physical downlink shared channel PDSCH transmission;

[0007] Determine a third bundling gain of the serving cell PDSCH transmission relative to the CSI-RS transmission;

[0008] The sum of the second shaping gain and the third shaping gain is determined as the first shaping gain.

[0009] Optionally, the determining a second shaping gain of the JT relative to a single-cell physical downlink shared channel PDSCH transmission includes:

[0010] In the case where JT is the same stream, a ratio of a first signal to interference plus noise ratio in the same stream to a second signal to interference plus noise ratio in single-cell transmission of the serving cell is determined as the second shaping gain; or

[0011] When JT is different streams, a ratio of a third signal to interference plus noise ratio for different streams to a second signal to interference plus noise ratio for single cell transmission of the serving cell is determined as the second shaping gain.

[0012] Optionally, the determining, according to the current first shaping gain value, whether to perform downlink joint transmission JT on the serving cell and the coordinated cell includes:

[0013] When the first shaping gain value is greater than a first gain threshold, determining to perform downlink JT on the serving cell and the coordinated cell; or,

[0014] In a case where the first shaping gain value is less than a second gain threshold, determining not to perform downlink JT on the serving cell and the collaborative cell, wherein the second gain threshold is less than the first gain threshold; or

[0015] When the first shaping gain value is greater than or equal to the second gain threshold and less than or equal to the first gain threshold, the current downlink transmission status of the serving cell and the collaborative cell is maintained.

[0016] Optionally, it also includes:

[0017] Based on the first shaping gain and a preset update coefficient, updating a first spectrum efficiency corresponding to a channel quality indicator CQI to obtain a second spectrum efficiency;

[0018] Downlink transmission is performed based on a modulation and coding strategy MCS corresponding to the second spectrum efficiency.

[0019] The second aspect of the present application provides a network device, characterized in that the network device includes a memory, a transceiver, and a processor; the memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations:

[0020] When it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the collaborative cell has been configured with a channel sounding reference signal SRS, it is determined whether to perform downlink joint transmission JT on the serving cell and the collaborative cell based on the current first bundling gain value, wherein the first bundling gain value is the bundling gain value of JT relative to the channel state information reference signal CSI-RS in single cell transmission.

[0021] Optionally, the processor executes a process of determining the first shaping gain, specifically including:

[0022] Determine a second shaping gain of the JT relative to a single-cell physical downlink shared channel PDSCH transmission;

[0023] Determine a third bundling gain of the serving cell PDSCH transmission relative to the CSI-RS transmission;

[0024] The sum of the second shaping gain and the third shaping gain is determined as the first shaping gain.

[0025] Optionally, the processor performs determining a second shaping gain of the JT relative to a single-cell physical downlink shared channel PDSCH transmission, specifically including:

[0026] In the case where JT is the same stream, a ratio of a first signal to interference plus noise ratio in the same stream to a second signal to interference plus noise ratio in single-cell transmission of the serving cell is determined as the second shaping gain; or

[0027] When JT is different streams, a ratio of a third signal to interference plus noise ratio for different streams to a second signal to interference plus noise ratio for single cell transmission of the serving cell is determined as the second shaping gain.

[0028] Optionally, the processor determines, according to the current first shaping gain value, whether to perform downlink joint transmission JT on the serving cell and the collaborative cell, specifically including:

[0029] When the first shaping gain value is greater than a first gain threshold, determining to perform downlink JT on the serving cell and the coordinated cell; or,

[0030] In a case where the first shaping gain value is less than a second gain threshold, determining not to perform downlink JT on the serving cell and the collaborative cell, wherein the second gain threshold is less than the first gain threshold; or

[0031] When the first shaping gain value is greater than or equal to the second gain threshold and less than or equal to the first gain threshold, the current downlink transmission status of the serving cell and the collaborative cell is maintained.

[0032] Optionally, the processor is specifically configured to perform the following operations:

[0033] Based on the first shaping gain and a preset update coefficient, updating a first spectrum efficiency corresponding to a channel quality indicator CQI to obtain a second spectrum efficiency;

[0034] Downlink transmission is performed based on a modulation and coding strategy MCS corresponding to the second spectrum efficiency.

[0035] The third aspect of the present application provides a joint transmission device, which is characterized by comprising:

[0036] A determination module is used to determine whether to perform downlink joint transmission JT on the serving cell and the collaborative cell based on the current first bundling gain value when it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the collaborative cell has been configured with a channel sounding reference signal SRS, wherein the first bundling gain value is the bundling gain value of JT relative to the channel state information reference signal CSI-RS in single-cell transmission.

[0037] Optionally, the process of the determining module determining the first shaping gain specifically includes:

[0038] Determine a second shaping gain of the JT relative to a single-cell physical downlink shared channel PDSCH transmission;

[0039] Determine a third bundling gain of the serving cell PDSCH transmission relative to the CSI-RS transmission;

[0040] The sum of the second shaping gain and the third shaping gain is determined as the first shaping gain.

[0041] Optionally, the determining module determines the second shaping gain of the JT relative to the single-cell physical downlink shared channel PDSCH transmission, specifically including:

[0042] In the case where JT is the same stream, a ratio of a first signal to interference plus noise ratio in the same stream to a second signal to interference plus noise ratio in single-cell transmission of the serving cell is determined as the second shaping gain; or

[0043] When JT is different streams, a ratio of a third signal to interference plus noise ratio for different streams to a second signal to interference plus noise ratio for single cell transmission of the serving cell is determined as the second shaping gain.

[0044] Optionally, the determining module determines whether to perform downlink joint transmission JT on the serving cell and the collaborative cell according to the current first shaping gain value, specifically including:

[0045] When the first shaping gain value is greater than a first gain threshold, determining to perform downlink JT on the serving cell and the coordinated cell; or,

[0046] In a case where the first shaping gain value is less than a second gain threshold, determining not to perform downlink JT on the serving cell and the collaborative cell, wherein the second gain threshold is less than the first gain threshold; or

[0047] When the first shaping gain value is greater than or equal to the second gain threshold and less than or equal to the first gain threshold, the current downlink transmission status of the serving cell and the collaborative cell is maintained.

[0048] Optionally, the determining module is further used to:

[0049] Based on the first shaping gain and a preset update coefficient, updating a first spectrum efficiency corresponding to a channel quality indicator CQI to obtain a second spectrum efficiency;

[0050] Downlink transmission is performed based on a modulation and coding strategy MCS corresponding to the second spectrum efficiency.

[0051] The fourth aspect of the present application provides a processor-readable storage medium, which stores a computer program, and the computer program is used to enable the processor to execute the joint transmission method described in the above embodiment.

[0052] This application has the following technical effects:

[0053] In the embodiment of the present application, when it is determined that the terminal is a terminal with CoMP capability and the cooperative cell has configured a channel sounding reference signal SRS, it is determined whether to perform downlink joint transmission JT on the serving cell and the cooperative cell according to the current first shaping gain value. Thus, by determining whether to perform downlink joint transmission JT on the serving cell and the cooperative cell based on the first shaping gain value, the spectral efficiency of the system is improved by using JT transmission, while the transmission rate of the system is guaranteed and the performance of the system is improved.

[0054] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0056] Figure 1 A schematic diagram of a flow chart of a joint transmission method provided in an embodiment of the present application;

[0057] Figure 2 A schematic diagram of a flow chart of a joint transmission method provided in an embodiment of the present application;

[0058] Figure 3 A schematic diagram of a flow chart of a joint transmission method provided in an embodiment of the present application;

[0059] Figure 4 A schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0060] Figure 5A schematic diagram of the structure of a joint transmission device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0061] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0062] The following describes the joint transmission method, network device, apparatus and storage medium of the embodiments of the present application with reference to the accompanying drawings.

[0063] Figure 1 A flowchart of a joint transmission method provided in an embodiment of the present application.

[0064] The joint transmission method of the embodiment of the present application can be applied to network equipment, such as access network equipment or core network equipment.

[0065] Among them, the access network device is exemplified by a base station. The base station may include multiple cells that provide services for terminal devices. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The access network device can be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The access network device can also coordinate the attribute management of the air interface. For example, the access network device involved in the embodiments of the present application may be an access network device (Base TransceiverStation, BTS) in the Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), or an access network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary access network device (eNB or e-NodeB) in the long term evolution (LTE) system, or a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the base station may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0066] The core network device can be a device including one or more network elements, or multiple devices or device groups, each including all or part of the one or more network elements. The network element can be virtual or physical. The core network includes, for example, at least one of the Evolved Packet Core (EPC), the 5G Core Network (5GCN), and the Next Generation Core (NGC).

[0067] The terminal device may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the names of the terminal devices may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). The wireless terminal device may communicate with one or more core network (CN) devices via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0068] like Figure 1 As shown, the joint transmission method includes:

[0069] Step 101, when it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the cooperative cell has been configured with a channel sounding reference signal SRS, determine whether to perform downlink joint transmission JT for the serving cell and the cooperative cell based on the current first bundling gain value, wherein the first bundling gain value is the bundling gain value of JT relative to the channel state information reference signal CSI-RS in single cell transmission.

[0070] Among them, CoMP is the abbreviation of Coordinated Multi-Point Tx / Rx (CoMP). SRS is the abbreviation of Sounding Reference Signal (SRS). JT is the abbreviation of Joint Transmission (JT). CSI-RS is the abbreviation of Channel State Information-Reference Signal (CSI-RS).

[0071] It should be noted that the first shaping gain value can be the shaping gain value of the channel state information reference signal CSI-RS in JT relative to a single-cell transmission, or it can also be called the shaping gain value of JT relative to a single-cell codebook transmission, and the present application does not limit this. The first shaping gain is the sum of the shaping gain of JT relative to a single-cell physical downlink shared channel (PDSCH) transmission and the shaping gain of a single-cell PDSCH transmission relative to CSI-RS transmission. Among them, a single-cell PDSCH transmission can also be called a single-cell non-codebook transmission, and CSI-RS transmission can also be called a codebook transmission. In other words, the first shaping gain is the sum of the shaping gain of JT relative to a single-cell non-codebook transmission and the shaping gain of a single-cell non-codebook transmission relative to a codebook transmission. The present application does not limit this.

[0072] In some possible implementation forms, when the first shaping gain value is greater than the first gain threshold, it can be determined that the inter-stream interference between the serving cell and the collaborative cell is small at this time, so it can be determined to perform downlink JT on the serving cell and the collaborative cell.

[0073] Among them, the first gain threshold is a corresponding gain critical value used to determine whether downlink JT can be executed. It can be preset and this application does not limit it.

[0074] In some possible implementation forms, when the first shaping gain value is less than the second gain threshold, it can be determined that the inter-flow interference between the serving cell and the collaborative cell is large at this time, so it can be determined not to perform downlink JT on the serving cell and the collaborative cell, wherein the second gain threshold is less than the first gain threshold.

[0075] Among them, the second gain threshold is a corresponding gain critical value used to determine whether to perform downlink JT. It can be pre-set and this application does not limit it.

[0076] In some possible implementation forms, when the first shaping gain value is greater than or equal to the second gain threshold and less than or equal to the first gain threshold, it can be determined that there is a certain amount of inter-stream interference between the serving cell and the collaborative cell, and the current downlink transmission status of the serving cell and the collaborative cell can be maintained.

[0077] That is to say, when the first shaping gain value is greater than or equal to the second gain threshold and less than or equal to the first gain threshold, if the current downlink transmission state of the serving cell and the collaborative cell is JT, then the downlink JT can continue to be maintained; if the current downlink transmission state of the serving cell and the collaborative cell is not JT, then the current downlink transmission state can be maintained without change.

[0078] In the embodiment of the present application, when it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the cooperative cell has configured a channel sounding reference signal SRS, it is determined whether to perform downlink joint transmission JT on the serving cell and the cooperative cell according to the current first shaping gain value. Thus, by determining whether to perform downlink joint transmission JT on the serving cell and the cooperative cell based on the first shaping gain value, the spectral efficiency of the system is improved by using JT transmission, while the transmission rate of the system is guaranteed and the performance of the system is improved.

[0079] Figure 2 A flowchart of a joint transmission method provided in an embodiment of the present application.

[0080] like Figure 2 As shown, the joint transmission method includes:

[0081] Step 201, determining a second shaping gain of JT relative to single-cell physical downlink shared channel PDSCH transmission.

[0082] It should be noted that, taking two-stream transmission as an example, if the service cell and the collaborative cell both use two streams for transmission, this is JT same-stream transmission; and if the service cell provides the first stream and the collaborative cell provides the second stream for two-stream transmission, this is JT different-stream transmission.

[0083] In some possible implementation forms, when JT is the same stream, the ratio of the first signal to interference plus noise ratio for the same stream to the second signal to interference plus noise ratio for single cell transmission of the serving cell may be determined as the second shaping gain.

[0084] In the present application, when JT is the same stream, channel estimation is first performed, and after obtaining the channel estimation value, the channel estimation value is multiplied by the corresponding shaping vector, and then the obtained product is subjected to minimum mean square error (MMSE) processing to determine the first signal to interference and noise ratio when JT is the same stream, and then the channel estimation value during single-cell transmission of the serving cell is multiplied by the corresponding shaping vector, and the product is subjected to minimum mean square error processing to obtain a second signal to interference and noise ratio, and then based on the ratio between the first signal to interference and noise ratio and the second signal to interference and noise ratio, the second shaping gain when JT is the same stream can be determined.

[0085] For example, the first signal to interference and noise ratio when JT has the same flow is SINR JT_dupL , the second signal to interference and noise ratio when the serving cell transmits in a single cell is SINR singleCell , then the second shaping gain BFGain when JT has the same flow JT_singleCell for: Furthermore, if we take the serving cell and the coordinated cell as an example, the second shaping gain BFGain JT_singleCell You can also:

[0086] Wherein, H1 is the SRS channel estimation of the serving cell transmission reception point (Transmission Reception Point, TRP) TRP1, H2 is the SRS channel estimation of the coordinated cell TRP2, W1 is the SRS beamforming vector of the serving cell TRP1, W2 is the SRS beamforming vector of the coordinated cell TRP2, δ 2 is the noise power and I is the unit matrix.

[0087] In some possible implementation forms, when JT is different streams, the ratio of the third signal to interference plus noise ratio for different streams to the second signal to interference plus noise ratio for single cell transmission of the serving cell may be determined as the second shaping gain.

[0088] In the present application, when JT is different in stream, channel estimation is first performed, and after obtaining the channel estimation value, the channel estimation value is multiplied by the corresponding shaping vector, and then the obtained product is subjected to minimum mean square error processing to determine the third signal to interference and noise ratio when JT is different in stream, and then based on the ratio between the third signal to interference and noise ratio and the second signal to interference and noise ratio, the second shaping gain when JT is different in stream can be determined.

[0089] For example, the third signal to interference and noise ratio when JT has different flows is SINR JT_sepL , the second signal to interference and noise ratio when the serving cell transmits in a single cell is SINR singleCell , then, the second shaping gain BFGain when JT is different JT_singleCell for: Furthermore, if we take the serving cell and the coordinated cell as an example, the second shaping gain BFGain JT_singleCell You can also:

[0090] Among them, H1 is the SRS channel estimation of the serving cell TRP1, W1 is the SRS shaping vector of the serving cell TRP1, and H eq_mix represents the combination of the equivalent channel estimate H1W1 corresponding to the serving cell TRP1 and the equivalent channel estimate H2W2 corresponding to the cooperative cell TRP2, δ 2 is the noise power and I is the unit matrix.

[0091] Step 202: determine a third beamforming gain of the serving cell PDSCH transmission relative to the CSI-RS transmission.

[0092] In this application, after determining the second beamforming gain of JT relative to the single-cell physical downlink shared channel PDSCH transmission, the third beamforming gain BFGain of the serving cell PDSCH transmission relative to the CSI-RS transmission can be determined. singleCell_CSI .

[0093] Step 203: determine the sum of the second shaping gain and the third shaping gain as the first shaping gain.

[0094] For example, the second shaping gain is BFGain JT_singleCell , the third shaping gain is BFGain singleCell_CSI , then the first shaping gain BFGain is: BFGain = BFGain JT_singleCell +BFGain singleCell_CSI .

[0095] Step 204, when it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the cooperative cell has been configured with a channel sounding reference signal SRS, determine whether to perform downlink joint transmission JT on the serving cell and the cooperative cell based on the current first shaping gain value, wherein the first shaping gain value is the shaping gain value of JT relative to the channel state information reference signal CSI-RS in single cell transmission.

[0096] The specific implementation form of step 204 can refer to the detailed description of other embodiments of the present application and will not be repeated here.

[0097] In the embodiment of the present application, the second bundling gain of JT relative to the single-cell physical downlink shared channel PDSCH transmission is first determined, and then the third bundling gain of the serving cell PDSCH transmission relative to the CSI-RS transmission is determined, and then the sum of the second bundling gain and the third bundling gain is determined as the first bundling gain. When it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the cooperative cell has configured a channel sounding reference signal SRS, it is determined whether to perform downlink joint transmission JT on the serving cell and the cooperative cell according to the current first bundling gain value. Thus, the first bundling gain value of JT relative to the CSI-RS in the single-cell transmission is determined based on the bundling gain value of JT relative to the single-cell PDSCH transmission and the bundling gain value of the serving cell PDSCH transmission relative to the CSI-RS transmission, and based on the first bundling gain, it is determined whether to perform downlink joint transmission JT on the serving cell and the cooperative cell, thereby providing conditions for improving the system transmission rate.

[0098] Figure 3 A flowchart of a joint transmission method provided in an embodiment of the present application.

[0099] like Figure 3 As shown, the joint transmission method includes:

[0100] Step 301, when it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the cooperative cell has been configured with a channel sounding reference signal SRS, determine whether to perform downlink joint transmission JT on the serving cell and the cooperative cell based on the current first bundling gain value, wherein the first bundling gain value is the bundling gain value of JT relative to the channel state information reference signal CSI-RS in single cell transmission.

[0101] The specific implementation form of step 301 can refer to the detailed description of other embodiments of the present application and will not be repeated here.

[0102] Step 302: Based on the first shaping gain and a preset update coefficient, update the first spectrum efficiency corresponding to the channel quality indicator CQI to obtain a second spectrum efficiency.

[0103] Among them, CQI is the abbreviation of Channel Quality Indicator (CQI).

[0104] The preset update coefficient is a coefficient used in the process of updating the first spectrum efficiency, which may be preset and is not limited in the present application.

[0105] The second spectrum efficiency is the spectrum efficiency obtained after the first spectrum efficiency corresponding to the CQI is updated.

[0106] For example, the first shaping gain is BFGain, and the preset update coefficient is κ0. Then, based on the first shaping gain and the preset update coefficient, the first spectrum efficiency ε corresponding to the CQI is calculated. CQI The updated second spectrum efficiency ε is obtained const is: const =ε CQI +BFGain*κ0, where ε CQI It is the first spectrum efficiency corresponding to the CQI reported by the CSI-RS.

[0107] Step 303: Perform downlink transmission based on a modulation and coding strategy MCS corresponding to the second spectrum efficiency.

[0108] Among them, MCS is the abbreviation of Modulation and Coding Scheme (MCS).

[0109] In the present application, after the first spectrum efficiency corresponding to the CQI is updated and the second spectrum efficiency is obtained, the corresponding MCS can be determined based on the second spectrum efficiency, and downlink transmission is performed. Thus, by determining the corresponding MCS based on the corresponding relationship between the spectrum efficiency and the MCS, the downlink transmission spectrum efficiency can quickly match the current channel state.

[0110] In the embodiment of the present application, when it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the cooperative cell has been configured with a channel sounding reference signal SRS, the receiver determines whether to perform downlink joint transmission JT for the serving cell and the cooperative cell based on the current first shaping gain value, and then updates the first spectrum efficiency corresponding to the channel quality indication CQI based on the first shaping gain and the preset update coefficient to obtain the second spectrum efficiency, and finally performs downlink transmission based on the modulation and coding strategy MCS corresponding to the second spectrum efficiency. Thus, based on the shaping gain, the spectrum efficiency corresponding to the channel quality indication CQI is updated and the corresponding modulation and coding strategy is determined for downlink transmission, thereby improving the transmission rate of the channel.

[0111] In order to implement the above embodiment, the present application also provides a network device, Figure 4 A schematic diagram of the structure of a network device provided in an embodiment of the present application.

[0112] like Figure 4 As shown, the network device 400 includes: a transceiver 401, a processor 402, and a memory 403;

[0113] The transceiver 401 is used to send and receive data under the control of the processor 402.

[0114] Among them, Figure 4 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 402 and memory represented by memory 403. The bus architecture may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 401 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium may include a wireless channel, a wired channel, an optical cable, and the like. The processor 402 is responsible for managing the bus architecture and general processing, and the memory 403 may store data used by the processor 402 when performing operations.

[0115] The processor 402 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0116] The processor 402 is used to call the computer program stored in the memory and perform the following operations:

[0117] When it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the collaborative cell has been configured with a channel sounding reference signal SRS, it is determined whether to perform downlink joint transmission JT on the serving cell and the collaborative cell based on the current first shaping gain value, wherein the first shaping gain value is the shaping gain value of JT relative to the channel state information reference signal CSI-RS in single cell transmission.

[0118] Optionally, the processor 402 executes a process of determining a first shaping gain, specifically including:

[0119] Determine a second beamforming gain of JT relative to single-cell physical downlink shared channel PDSCH transmission;

[0120] Determine a third beamforming gain of serving cell PDSCH transmission relative to CSI-RS transmission;

[0121] The sum of the second shaping gain and the third shaping gain is determined as the first shaping gain.

[0122] Optionally, the processor 402 performs determining a second shaping gain of JT relative to single-cell physical downlink shared channel PDSCH transmission, specifically including:

[0123] In the case where JT is the same stream, a first ratio of a first signal to interference plus noise ratio in the same stream to a second signal to interference plus noise ratio in single cell transmission of the serving cell is determined as a second shaping gain; or,

[0124] When JT is different streams, a second ratio of a third signal to interference plus noise ratio in different streams to a second signal to interference plus noise ratio in single cell transmission of the serving cell is determined as a second shaping gain.

[0125] Optionally, the processor 402 determines whether to perform downlink joint transmission JT on the serving cell and the cooperative cell according to the current first shaping gain value, specifically including:

[0126] When the first shaping gain value is greater than the first gain threshold, determining to perform downlink JT on the serving cell and the coordinated cell; or,

[0127] In the case where the first shaping gain value is less than the second gain threshold, determining not to perform downlink JT on the serving cell and the coordinated cell, wherein the second gain threshold is less than the first gain threshold; or,

[0128] When the first shaping gain value is greater than or equal to the second gain threshold and less than or equal to the first gain threshold, the current downlink transmission status of the serving cell and the collaborative cell is maintained.

[0129] Optionally, the processor 402 is specifically configured to perform the following operations:

[0130] Based on the first shaping gain and a preset update coefficient, a first spectrum efficiency corresponding to the channel quality indicator CQI is updated to obtain a second spectrum efficiency;

[0131] Based on a modulation and coding strategy MCS corresponding to the second spectrum efficiency, downlink transmission is performed.

[0132] It should be noted that the network device provided in the embodiment of the present application can achieve the above Figures 1 to 3 All the method steps implemented in the method embodiment can achieve the same technical effect, and the parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0133] In order to implement the above embodiment, the present application also proposes a joint transmission device. Figure 5 A schematic diagram of the structure of a joint transmission device provided in an embodiment of the present application.

[0134] like Figure 5As shown, the joint transmission device 500 includes:

[0135] The determination module 501 is used to determine whether to perform downlink joint transmission JT on the serving cell and the collaborative cell according to the current first bundling gain value when it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the collaborative cell has been configured with a channel sounding reference signal SRS, wherein the first bundling gain value is the bundling gain value of JT relative to the channel state information reference signal CSI-RS in single-cell transmission.

[0136] Optionally, the process of determining the first shaping gain by the determination module 501 specifically includes:

[0137] Determine a second beamforming gain of JT relative to single-cell physical downlink shared channel PDSCH transmission;

[0138] Determine a third beamforming gain of serving cell PDSCH transmission relative to CSI-RS transmission;

[0139] The sum of the second shaping gain and the third shaping gain is determined as the first shaping gain.

[0140] Optionally, the determining module 501 determines a second shaping gain relative to a single-cell physical downlink shared channel PDSCH transmission, specifically including:

[0141] In the case where JT is the same stream, a ratio of a first signal to interference plus noise ratio in the same stream to a second signal to interference plus noise ratio in the serving cell single cell transmission is determined as a second shaping gain; or,

[0142] When JT is different streams, the ratio of the third signal to interference plus noise ratio in different streams to the second signal to interference plus noise ratio in single cell transmission of the serving cell is determined as the second shaping gain.

[0143] Optionally, the determination module 501 determines whether to perform downlink joint transmission JT on the serving cell and the cooperative cell according to the current first shaping gain value, specifically including:

[0144] When the first shaping gain value is greater than the first gain threshold, determining to perform downlink JT on the serving cell and the coordinated cell; or,

[0145] In the case where the first shaping gain value is less than the second gain threshold, determining not to perform downlink JT on the serving cell and the coordinated cell, wherein the second gain threshold is less than the first gain threshold; or,

[0146] When the first shaping gain value is greater than or equal to the second gain threshold and less than or equal to the first gain threshold, the current downlink transmission status of the serving cell and the collaborative cell is maintained.

[0147] Optionally, the determination module 501 is further configured to:

[0148] Based on the first shaping gain and a preset update coefficient, a first spectrum efficiency corresponding to the channel quality indicator CQI is updated to obtain a second spectrum efficiency;

[0149] Downlink transmission is performed based on a modulation and coding strategy MCS corresponding to the second spectrum efficiency.

[0150] It should be noted that the joint transmission device provided in the embodiment of the present application can achieve the above Figures 1 to 3 All the method steps implemented in the method embodiment can achieve the same technical effect, and the parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0151] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0152] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network side device, etc.) or a processor (processor) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store program codes.

[0153] It should be noted here that the above-mentioned device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0154] On the other hand, an embodiment of the present application further provides a processor-readable storage medium, which stores a computer program, and the computer program is used to enable the processor to execute the steps of all method embodiments of the present application.

[0155] Among them, the above-mentioned processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO)), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0156] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0157] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A joint transmission method, characterized in that: include: When it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the collaborative cell has been configured with a channel sounding reference signal SRS, it is determined whether to perform downlink joint transmission JT on the serving cell and the collaborative cell based on the current first bundling gain value, wherein the first bundling gain value is the bundling gain value of JT relative to the channel state information reference signal CSI-RS in single cell transmission.

2. The method according to claim 1, characterized in that The process of determining the first shaping gain includes: Determine a second shaping gain of the JT relative to a single-cell physical downlink shared channel PDSCH transmission; Determine a third bundling gain of the serving cell PDSCH transmission relative to the CSI-RS transmission; The sum of the second shaping gain and the third shaping gain is determined as the first shaping gain.

3. The method according to claim 2, characterized in that The determining a second shaping gain of the JT relative to a single-cell physical downlink shared channel PDSCH transmission includes: In the case where JT is the same stream, a ratio of a first signal to interference plus noise ratio in the same stream to a second signal to interference plus noise ratio in single-cell transmission of the serving cell is determined as the second shaping gain; or When JT is different streams, a ratio of a third signal to interference plus noise ratio for different streams to a second signal to interference plus noise ratio for single cell transmission of the serving cell is determined as the second shaping gain.

4. The method according to any one of claims 1 to 3, characterized in that: The determining, according to the current first shaping gain value, whether to perform downlink joint transmission JT on the serving cell and the coordinated cell includes: When the first shaping gain value is greater than a first gain threshold, determining to perform downlink JT on the serving cell and the coordinated cell; or, In a case where the first shaping gain value is less than a second gain threshold, determining not to perform downlink JT on the serving cell and the collaborative cell, wherein the second gain threshold is less than the first gain threshold; or When the first shaping gain value is greater than or equal to the second gain threshold and less than or equal to the first gain threshold, the current downlink transmission status of the serving cell and the collaborative cell is maintained.

5. The method according to any one of claims 1 to 3, characterized in that: Also includes: Based on the first shaping gain and a preset update coefficient, updating a first spectrum efficiency corresponding to a channel quality indicator CQI to obtain a second spectrum efficiency; Downlink transmission is performed based on a modulation and coding strategy MCS corresponding to the second spectrum efficiency.

6. A network device, characterized in that: The network device includes a memory, a transceiver, and a processor; the memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: When it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the collaborative cell has been configured with a channel sounding reference signal SRS, it is determined whether to perform downlink joint transmission JT on the serving cell and the collaborative cell based on the current first bundling gain value, wherein the first bundling gain value is the bundling gain value of JT relative to the channel state information reference signal CSI-RS in single cell transmission.

7. The network device according to claim 6, characterized in that: The processor executes a process of determining the first shaping gain, specifically comprising: Determine a second shaping gain of the JT relative to a single-cell physical downlink shared channel PDSCH transmission; Determine a third bundling gain of the serving cell PDSCH transmission relative to the CSI-RS transmission; The sum of the second shaping gain and the third shaping gain is determined as the first shaping gain.

8. The network device according to claim 7, characterized in that: The processor determines a second shaping gain of the JT relative to a single-cell physical downlink shared channel PDSCH transmission, specifically including: In the case where JT is the same stream, a ratio of a first signal to interference plus noise ratio in the same stream to a second signal to interference plus noise ratio in single-cell transmission of the serving cell is determined as the second shaping gain; or When JT is different streams, a ratio of a third signal to interference plus noise ratio for different streams to a second signal to interference plus noise ratio for single cell transmission of the serving cell is determined as the second shaping gain.

9. The network device according to any one of claims 6 to 8, characterized in that: The processor determines, according to the current first shaping gain value, whether to perform downlink joint transmission JT on the serving cell and the coordinated cell, specifically including: When the first shaping gain value is greater than a first gain threshold, determining to perform downlink JT on the serving cell and the coordinated cell; or, In a case where the first shaping gain value is less than a second gain threshold, determining not to perform downlink JT on the serving cell and the collaborative cell, wherein the second gain threshold is less than the first gain threshold; or When the first shaping gain value is greater than or equal to the second gain threshold and less than or equal to the first gain threshold, the current downlink transmission status of the serving cell and the collaborative cell is maintained.

10. The network device according to any one of claims 6 to 8, characterized in that: The processor is further configured to perform the following operations: Based on the first shaping gain and a preset update coefficient, updating a first spectrum efficiency corresponding to a channel quality indicator CQI to obtain a second spectrum efficiency; Downlink transmission is performed based on a modulation and coding strategy MCS corresponding to the second spectrum efficiency.

11. A joint transmission device, characterized in that: include: A determination module is used to determine whether to perform downlink joint transmission JT on the serving cell and the collaborative cell based on the current first bundling gain value when it is determined that the terminal is a terminal with multi-point coordinated transmission CoMP capability and the collaborative cell has been configured with a channel sounding reference signal SRS, wherein the first bundling gain value is the bundling gain value of JT relative to the channel state information reference signal CSI-RS in single-cell transmission.

12. The device of claim 11, wherein: The process of determining the first shaping gain by the determination module specifically includes: Determine a second shaping gain of the JT relative to a single-cell physical downlink shared channel PDSCH transmission; Determine a third bundling gain of the serving cell PDSCH transmission relative to the CSI-RS transmission; The sum of the second shaping gain and the third shaping gain is determined as the first shaping gain.

13. The device of claim 12, wherein: The determining module determines the second shaping gain of the JT relative to the single-cell physical downlink shared channel PDSCH transmission, specifically including: In the case where JT is the same stream, a ratio of a first signal to interference plus noise ratio in the same stream to a second signal to interference plus noise ratio in single-cell transmission of the serving cell is determined as the second shaping gain; or When JT is different streams, a ratio of a third signal to interference plus noise ratio for different streams to a second signal to interference plus noise ratio for single cell transmission of the serving cell is determined as the second shaping gain.

14. The device according to any one of claims 11 to 13, wherein: The determining module determines whether to perform downlink joint transmission JT on the serving cell and the coordinated cell according to the current first shaping gain value, specifically including: When the first shaping gain value is greater than a first gain threshold, determining to perform downlink JT on the serving cell and the coordinated cell; or, In a case where the first shaping gain value is less than a second gain threshold, determining not to perform downlink JT on the serving cell and the collaborative cell, wherein the second gain threshold is less than the first gain threshold; or When the first shaping gain value is greater than or equal to the second gain threshold and less than or equal to the first gain threshold, the current downlink transmission status of the serving cell and the collaborative cell is maintained.

15. The device according to any one of claims 11 to 13, wherein: The determining module is further used for: Based on the first shaping gain and a preset update coefficient, updating a first spectrum efficiency corresponding to a channel quality indicator CQI to obtain a second spectrum efficiency; Downlink transmission is performed based on a modulation and coding strategy MCS corresponding to the second spectrum efficiency.

16. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute any one of the methods of claims 1-5.

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