WO2018218514A1

WO2018218514A1 - Collaborative receiving method for uplink data and network device

Info

Publication number: WO2018218514A1
Application number: PCT/CN2017/086628
Authority: WO
Inventors: 陈拓
Original assignee: 华为技术有限公司
Priority date: 2017-05-31
Filing date: 2017-05-31
Publication date: 2018-12-06
Also published as: CN110612683A; CN110612683B

Abstract

A collaborative receiving method for uplink data and a network device. The method comprises: a first network device receives first uplink data transmitted by a first terminal, before a second decoding result transmitted by a second network device is received, decodes the first uplink data to produce a first decoding result, and if decoding is determined to be successful on the basis of result indication information in the first decoding result, then transmits first decoded data produced by decoding to a third network device. Hence, the first network device is not required to wait until the decoding result of the second network device is received before decoding, thus effectively preventing the problem of low uplink communication efficiency at times of increased delay in exchanges between network devices.

Description

Collaborative receiving method and network device for uplink data

Technical field

The present application relates to the field of communications technologies, and in particular, to a method and a network device for cooperatively receiving uplink data.

Background technique

In the wireless communication system, the transmission of the terminal uplink data is controlled only by the serving base station accessed by the terminal. Specifically, the terminal analyzes the control information obtained by the serving base station to obtain the scheduling result, and sends the uplink data according to the scheduling result, and the terminal will Information sent by other base stations is considered as interference. Therefore, when the terminal moves within the coverage area of the serving base station to the coverage area of the neighboring base station, but does not trigger the cell handover, the base station with the best communication efficiency with the terminal has become the neighboring base station, but the uplink data transmission of the terminal The behavior can still be controlled only by the serving base station, so that the communication efficiency of the terminal is low.

To solve this problem, the prior art introduces a manner in which multiple base stations cooperate to receive uplink data of a terminal, and the specific implementation process is as follows:

(1) The terminal accesses the serving base station, and the serving base station is responsible for its uplink scheduling and mobility management. After the serving base station completes the uplink scheduling of the terminal, the control information (including the information such as the scheduling result of the terminal) is sent to the terminal through the downlink control channel, and the terminal successfully parses the control information and then sends the uplink data on the specified time-frequency resource.

(2) After completing the terminal uplink scheduling, the serving base station also sends the terminal information (including the terminal identifier, the scheduling result of the terminal, and the like) to the cooperative base station, and after receiving and successfully analyzing the terminal information sent by the serving base station, the cooperative base station The specified time-frequency resource attempts to receive the uplink data sent by the terminal, and returns the processed uplink data to the serving base station.

(3) The serving base station can perform combined decoding on the received uplink data and the backhaul uplink data of the cooperative base station, and acquire the multi-node joint decoding gain, thereby improving the uplink spectrum efficiency.

According to the above, after the cooperative base station completes the uplink data reception, the received uplink data needs to be transmitted back to the serving base station, so that the serving base station performs the combined decoding, and feeds back to the terminal according to the combined decoding result. If the transmission delay between the serving base station and the cooperative base station is large, the serving base station may not receive the uplink data returned by the cooperative base station in time, thereby seriously affecting the uplink communication efficiency.

Therefore, there is a need for a cooperative receiving method and a network device for uplink data, which are used to solve the technical problem that the uplink communication efficiency of the terminal in the prior art is low.

Summary of the invention

The embodiment of the present application provides a method for cooperatively receiving uplink data and a network device, which is used to implement cooperative reception of uplink data in an uplink to improve uplink communication efficiency of the terminal.

In a first aspect, an embodiment of the present application provides a method for cooperatively receiving uplink data, including:

Receiving, by the first network device, first uplink data sent by the first terminal;

The first network device decodes the first uplink data to obtain a first decoding result before receiving the second decoding result sent by the second network device; the first decoding result includes the And a first decoding result obtained by decoding, by the first network device, the first uplink data, and the second decoding result, where the second decoding result includes, by the second network device, the first uplink data The result of decoding is indicated by information and the second decoded number obtained by decoding The second decoding result is obtained by the second network device decoding the received first uplink data; the second network device is a cooperative network device of the first network device;

And if the first network device determines, according to the result indication information in the first decoding result, that the first uplink data is successfully decoded, sending the decoded first decoded data to the third network device. .

Therefore, in the embodiment of the present application, after receiving the first uplink data sent by the first terminal, and receiving the second decoding result sent by the second network device, the first network device performs the first uplink data. Decoding, obtaining a first decoding result, and according to the result indication information in the first decoding result, if it is determined that the decoding of the first uplink data is successful, transmitting the decoded first decoded data to the third network device. It can be seen that, in a case that the first network device and the second network device cooperate to receive the uplink data, before receiving the decoding result of the second network device, the first network device can independently decode the first uplink data without waiting After the second decoding result sent by the second network device is received, the decoding is performed, so that the interaction between the first network device and the second network device in the prior art is greatly avoided, because the second network is The problem that the uplink communication efficiency caused by the device transmitting the received uplink data is low.

In conjunction with the first aspect, in a first possible implementation of the first aspect, the method further includes:

And if the first network device determines, according to the result indication information in the first decoding result, that the decoding of the first uplink data fails, receiving, by the second network device, the first uplink data. After the second decoding result, according to the result indication information in the second decoding result, if it is determined that the second network device successfully decodes the first uplink data, the second translation is performed. The code data is sent to the third network device;

If it is determined that the second network device fails to decode the first uplink data, the first decoded data and the second decoded data are combined and decoded, and when the merge decoding is successful, The third decoded data obtained by the combined decoding is sent to the third network device.

It can be seen that, in the embodiment of the present application, when decoding the first uplink data fails, the first network device may perform the combined decoding according to the second decoding result of the second network device, thereby effectively improving the first uplink. The probability of successful data decoding improves the efficiency of uplink communication.

With reference to the first aspect, in a second possible implementation manner of the first aspect, after the first network device receives the first uplink data sent by the first terminal, the method further includes:

The first network device sends the first response information to the first terminal according to the result indication information in the first decoding result, or after determining that the third uplink data to be sent exists in the first terminal, Transmitting, by the first terminal, the first control information, where the first response information is an ACK or a NACK, where the first control information is used to instruct the terminal to send the third uplink data;

The first network device sends the coordinated terminal information to the second network device, where the coordinated terminal information includes the power and the location when the first network device sends the first response information or the first control information. a first path loss between the first terminal and the first network device, a second path loss between the first terminal and the second network device, and the coordinated terminal information is used for the second The network device determines power when the second response information or the second control information is sent to the first terminal, and the second response information is ACK.

With reference to the first aspect, in a third possible implementation manner of the first aspect, the first network device sends the first response information to the first terminal according to the result indication information in the first decoding result ,include:

And the first network device sends, according to the result indication information in the first decoding result, the ACK to the first terminal, if it is determined that the first uplink data is successfully decoded; If the first uplink data decoding fails, the NACK is sent to the first terminal.

With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the first network device After the terminal sends the NACK, the method further includes:

Receiving, by the first network device, the first uplink data that is retransmitted by the first terminal;

If the first network device determines that the first decoding result and the second decoding result are combined and decoded, the first network device is configured to the first decoded data, the second The decoded data and the retransmitted first uplink data are combined and decoded.

With reference to the first aspect, in a fifth possible implementation manner of the first aspect, after the first network device sends the NACK to the first terminal, the method further includes:

The first network device receives the second uplink data that is sent by the second terminal, and the time-frequency resource occupied by the second uplink data and the time-frequency resource occupied by the first uplink data at least partially overlap;

Decoding, by the first network device, the second uplink data, if the decoding fails, canceling the interference of the first uplink data on the second uplink data on the overlapping time-frequency resources, The second uplink data is decoded again.

In a second aspect, the embodiment of the present application provides another method for cooperatively receiving uplink data, where the method includes:

Receiving, by the second network device, the first uplink data sent by the first terminal, and decoding the first uplink data, to obtain a second decoding result, where the second decoding result includes the second network device pair The result of the first uplink data decoding indicates information and the decoded second decoded data;

The second network device sends the second decoding result to the first network device, where the second network device is a cooperative network device of the first network device;

Transmitting, by the second network device, the second response information to the first terminal according to the result indication information in the second decoding result, or determining to decode the first uplink data, to the first The terminal sends the second control information, where the second response information is an ACK, and the second control information is used to instruct the first terminal to retransmit the first uplink data.

With the first possible implementation of the second aspect, the sending, by the second network device, the second response information to the first terminal according to the result indication information in the second decoding result includes:

And the second network device sends, according to the result indication information in the second decoding result, the ACK to the first terminal, if it is determined that the first uplink data is successfully decoded, and determines the location When the first uplink data decoding fails, the NACK is not sent to the first terminal.

With the second possible implementation of the second aspect, the sending, by the second network device, the second control information to the first terminal according to the result indication information in the second decoding result includes:

And the second network device sends, according to the result indication information in the second decoding result, the second control information to the first terminal, if it is determined that the decoding of the first uplink data fails, The second control information is used to instruct the first terminal to retransmit the first uplink data.

In combination with the first to the second possible implementation manners of the second aspect, before the sending, by the second network device, the second response information or the second control information to the first terminal, the method further includes:

The second network device receives the cooperative terminal information that is sent by the first network device, where the coordinated network information includes the first network device that sends the first response information or the first control information to the first terminal. a first power loss, a first path loss between the first terminal and the first network device, and a second path loss between the first terminal and the second network device;

Determining, by the second network device, that the second network device sends the first network device to the first terminal according to the first power, the first path loss, the second path loss, and a preset power adjustment threshold The second response information or the second The second power when controlling the information;

The sending, by the second network device, the second response information or the second control information to the first terminal includes:

The second network device sends the second response information or the second control information to the first terminal by using the second power.

Therefore, in the embodiment of the present application, the second network device may independently decode the first uplink data, and feed back the second response information or the second control information to the first terminal according to the decoding result, and therefore, the second network device The behavior of retransmitting the first uplink data by the first terminal may be effectively controlled by using the second response information or the second control information, so as to avoid a situation in which the first terminal has a large delay between the first network device and the second network device. After the second network device sends the received uplink data to the first network device, the first network device performs the combined decoding according to the uplink data received by the second network device, and then feeds back the decoding result to the first terminal. The first terminal caused the problem that the first terminal is invalidated and retransmitted because the decoding result cannot be known in time, thereby improving the uplink communication efficiency.

In a third aspect, the embodiment of the present application provides a network device, where the network device includes:

a transceiver, configured to receive first uplink data sent by the first terminal;

a processor, configured to decode the first uplink data to obtain a first decoding result before receiving the second decoding result sent by the second network device, where the first decoding result includes the a result indicating information about the decoding of the first uplink data by a network device and first decoded data obtained by decoding; the second decoding result comprising: decoding, by the second network device, the first uplink data The result indicating information and the decoded second decoded data, the second decoding result being obtained by the second network device decoding the received first uplink data; the second network The device is a cooperative network device of the first network device;

In conjunction with the third aspect, in a first possible implementation manner of the third aspect, the processor is specifically configured to:

And if it is determined that the decoding of the first uplink data fails, the second decoding result of the second uplink data by the second network device is received according to the result indication information in the first decoding result. Then, according to the result indication information in the second decoding result, if it is determined that the second network device successfully decodes the first uplink data, sending the second decoded data to the third network device ;

In conjunction with the third aspect, in a second possible implementation of the third aspect, the transceiver is further configured to:

And sending, according to the result indication information in the first decoding result, the first response information to the first terminal, or after determining that the third uplink data to be sent in the first terminal is present, to the first terminal Transmitting the first control information, where the first response information is an ACK or a NACK, where the first control information is used to instruct the terminal to send the third uplink data;

Sending, to the second network device, the coordinated terminal information, where the coordinated terminal information includes the power when the first network device sends the first response information or the first control information, the first terminal and the Determining a first path loss between the first network device, a second path loss between the first terminal and the second network device; the cooperative terminal information is used by the second network device to determine The power when the first terminal sends the second response information or the second control information, and the second response information is ACK.

In conjunction with the third aspect, in a third possible implementation manner of the third aspect, the transceiver is specifically configured to:

Determining, according to the result indication information in the first decoding result, the ACK to the first terminal, if it is determined that the first uplink data is successfully decoded, and determining to decode the first uplink data If it fails, the NACK is sent to the first terminal.

In conjunction with the third aspect, in a fourth possible implementation of the third aspect, the transceiver is further configured to:

Receiving, by the first terminal, the first uplink data that is retransmitted by the first terminal;

The processor is further configured to:

And if the first network device determines that the first decoding data and the second decoding data are combined and failed to be decoded, the first network device, the first decoding data, the second translation The code data and the retransmitted first uplink data are combined and decoded.

In conjunction with the third aspect, in a fifth possible implementation manner of the third aspect, the transceiver is further configured to:

Receiving, by the second terminal, the second uplink data that is sent by the second terminal; the time-frequency resource occupied by the second uplink data and the time-frequency resource occupied by the first uplink data are at least partially overlapped;

The processor is further configured to:

Decoding the second uplink data, if the decoding fails, canceling the interference of the first uplink data on the second uplink data on the overlapping time-frequency resources, and performing the second uplink data Decode again.

With reference to the third aspect, in a sixth possible implementation manner of the third aspect, the transceiver is further configured to: according to the result indication information in the first decoding result, if the first terminal is determined If the third uplink data is to be sent, the first control information is sent to the first terminal, where the first control information is used to instruct the terminal to send the third uplink data.

In a fourth aspect, the embodiment of the present application provides another network device, where the network device includes:

a processor, configured to decode the first uplink data to obtain a second decoding result, where the second decoding result includes a result indication that the second network device decodes the first uplink data Information and decoded second decoded data;

The transceiver is further configured to send the second decoding result to the first network device, and send the second response information to the first terminal according to the result indication information in the second decoding result. Determining that the decoding of the first uplink data fails, sending second control information to the first terminal, where the second response information is an ACK; the second control information is used to indicate that the first terminal retransmits the The first uplink data is described.

In conjunction with the fourth aspect, in a first possible implementation manner of the fourth aspect, the transceiver is specifically configured to:

Determining, according to the result indication information in the second decoding result, that the ACK is sent to the first terminal, and determining to translate the first uplink data, if it is determined that the first uplink data is successfully decoded. In the case where the code fails, no NACK is sent to the first terminal.

With reference to the fourth aspect, in a second possible implementation manner of the fourth aspect, the transceiver is further configured to:

And if it is determined that the decoding of the first uplink data fails, the second control information is sent to the first terminal, where the second control information is used, according to the result indication information in the second decoding result. Instructing the first terminal to retransmit the first uplink data.

In conjunction with the fourth aspect, in the first to second possible implementation manners of the fourth aspect, the transceiver is further configured to:

Receiving the cooperative terminal information sent by the first network device; the coordinated terminal information includes a first power when the first network device sends the first response information or the first control information to the first terminal, and the a first path loss between the first terminal and the first network device, and a second path loss between the first terminal and the second network device;

The processor is further configured to:

Determining, according to the first power, the first path loss, the second path loss, and a preset power adjustment threshold, that the second network device sends the second response information or the first terminal to the first terminal Second power when controlling information;

The transceiver is also used to:

And transmitting, by the second power, the second response information or the second control information to the first terminal.

In a fifth aspect, the embodiment of the present application further provides a communication entity, where the communication entity includes various functional modules, such as a transceiver, a processor, and the like, for performing the foregoing method steps. The communication entity can be a terminal, a network device, or the like.

In a sixth aspect, the embodiment of the present application further provides a communication entity, where the communication entity includes a processor and a memory, where the memory is used to store a software program, and the processor is configured to read a software program stored in the memory and A cooperative receiving method for implementing uplink data provided by any one of the above designs, the communication entity may be a mobile terminal, a network device, or the like.

In a seventh aspect, the embodiment of the present application further provides a computer storage medium, where the software program stores a software program, and the software program can implement any one of the above designs when read and executed by one or more processors. A cooperative reception method of uplink data.

In an eighth aspect, the embodiment of the present application further provides a computer program product comprising instructions, when executed on a computer, causing the computer to perform any of the above-mentioned cooperative receiving methods related to the provided uplink data.

As can be seen from the foregoing, in the embodiment of the present application, the first network device and the second network device receive the first uplink data sent by the first terminal, and perform decoding separately. After the second network device decodes the first uplink data, the second network device sends the second decoding result to the first network device, and sends the second decoding result to the first terminal according to the result indication information in the second decoding result. The ACK or the second control information, so that the first terminal can know in time whether the second network device successfully decodes the first uplink data according to the ACK or the second control information, and determines whether to retransmit the first uplink data, that is, the second network device. By transmitting the ACK or the second control information, the retransmission behavior of the first terminal is effectively controlled, thereby improving the uplink communication efficiency. Similarly, before receiving the second decoding result of the second network device, the first network device may directly decode the first uplink data to obtain a first decoding result; and successfully decode the first uplink data. In the case, the first decoded data is directly transmitted to the third network device, thereby improving communication efficiency.

DRAWINGS

1 is a schematic diagram of uplink data of a multi-base station cooperative receiving terminal in the prior art;

2 is a schematic structural diagram of a system according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart of a method for cooperatively receiving uplink data according to Embodiment 1 of the present invention; FIG.

FIG. 3b is a schematic diagram of comparison between time-frequency resources occupied by the first terminal and the second terminal in multiplexing uplink data according to the first embodiment of the present invention;

4 is a schematic flowchart of a method for cooperatively receiving uplink data according to Embodiment 2 of the present invention;

5 is a schematic flowchart of a method for adjusting a power of transmitting an ACK by a cooperative base station according to Embodiment 2 of the present invention;

FIG. 6 is a schematic flowchart of a method for cooperatively receiving uplink data according to Embodiment 3 of the present invention;

7a and 7b are schematic flowcharts of a method for cooperatively receiving uplink data according to Embodiment 4 of the present invention;

8 is a schematic flowchart of a method for adjusting a power of a transmission control information by a cooperative base station according to Embodiment 4 of the present invention;

FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of a network device according to an embodiment of the present invention.

detailed description

The embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

The cooperative receiving method of uplink data in the embodiment of the present invention can be applied to various system architectures. FIG. 1 is a schematic structural diagram of a system according to an embodiment of the present invention. As shown in FIG. 2, the system architecture includes a first network device 201, a second network device 202, and one or more terminals, such as the first terminal 2031, the second terminal 2032, and the third terminal 2033 shown in FIG. 2. The first network device 201 and the second network device 202 are specifically network devices of the same standard. The first network device 201 is adjacent to the second network device 202 and can perform two-way data interaction. Specifically, the first network device and The second network device can be interconnected by using multiple interaction channels, for example, by using a network cable or an optical fiber to form a network device networking. Both the first network device 201 and the second network device 202 can perform information transmission with the first terminal 2031, the second terminal 2032, and the third terminal 2033 through the network. In the embodiment of the present invention, the first network device 201 refers to a network device directly accessed by the terminal, and is used for uplink scheduling and mobility management of the data transmission of the terminal, and the second network device 202 refers to the current location of the coverage terminal. Another network device adjacent to the first network device is configured to perform cooperative reception of terminal uplink data in combination with the first network device 201.

Taking the terminal 2031 as an example, after the terminal 2031 accesses the first network device 201, the first network device 201 can be responsible for its uplink scheduling and mobility management. After the first network device 201 completes the uplink scheduling of the terminal 2031, on the one hand, to implement cooperative reception of the uplink data sent by the terminal 2031, the first network device 201 sends the terminal information of the terminal 2031 to the adjacent second network device. After the second network device successfully parses the terminal information, the uplink data sent by the terminal 2031 is received on the time-frequency resource specified by the terminal information. The terminal information of the terminal 2031 includes, but is not limited to, the RNTI of the terminal 2031 (Radio Network Temporary Identifier). The radio network temporary identifier, the ID of the physical cell where the terminal 2031 is located, the control channel resource configuration of the terminal 2031, and the time-frequency resource allocated by the first network device to the terminal 2031.

On the other hand, the first network device needs to send the control information to the terminal 2031, where the control information includes the time-frequency resource allocated by the first network device to the terminal 2031. Therefore, after successfully analyzing the control information, the terminal 2031 may be in the first The network device sends uplink data to its allocated time-frequency resource.

The embodiments of the present application can be applied to various mobile communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, and Wideband Code Division Multiple Access (Wideband). Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, general purpose Other mobile communication systems such as the Universal Mobile Telecommunication System (UMTS), the evolved Long Term Evolution (eLTE) system, and the 5G (eg, NR system).

In the embodiment of the present invention, the network device may be a base station (BS). A base station device, also referred to as a base station, is a device deployed in a wireless access network to provide wireless communication functionality. For example, a device providing a base station function in a 2G network includes a base transceiver station (BTS) and a base station controller (BSC), and the device providing the base station function in the 3G network includes a Node B (NodeB) and the wireless device. A radio network controller (RNC), which provides a base station function in a 4G network, includes an evolved NodeB (eNB), and a device that provides a base station function in a 5G NR network, including a new radio node B (New Radio) NodeB, gNB), Centralized Unit (CU), distributed unit (Distributed Unit) and a new wireless controller. In a WLAN, a device that provides a base station function is an access point (AP).

In addition, in the embodiment of the present invention, a terminal, also referred to as a user equipment (User Equipment), is a device that provides voice and/or data connectivity to a user, including a wired terminal and a wireless terminal. . The wireless terminal can be a handheld device with wireless connectivity, or other processing device connected to a wireless modem, and a mobile terminal that communicates with one or more core networks via a wireless access network. For example, the wireless terminal can be a mobile phone, a computer, a tablet, a personal digital assistant (PDA), a mobile Internet device (MID), a wearable device (eg, a smart watch, smart Bracelets, pedometers, etc.) and e-book readers. As another example, the wireless terminal can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device. For another example, the wireless terminal can be part of a mobile station, an access point, or a user equipment (UE).

Embodiment 1

Based on the above description, referring to FIG. 3, it is a schematic flowchart of a method for cooperatively receiving uplink data according to Embodiment 1 of the present invention. The method includes:

Step 301: The first terminal sends the first uplink data.

Step 302: The first network device receives the first uplink data sent by the first terminal, and decodes the first uplink data to obtain the first decoding before receiving the second decoding result sent by the second network device. result;

Step 303: The first network device sends first response information or first control information to the first terminal according to the result indication information in the first decoding result, where the first response information is ACK or NACK. ;

Step 304: The first network device sends, according to the result indication information in the first decoding result, the first decoded data that is decoded to the third network, if it is determined that the first uplink data is successfully decoded. device;

Step 305: The second network device receives the first uplink data sent by the first terminal, and decodes the first uplink data to obtain a second decoding result.

Step 306: Send second response information or second control information to the first terminal according to the result indication information in the second decoding result, where the second response information is ACK;

Step 307: The second network device sends the second decoding result to the first network device.

Step 308: The first network device, according to the result indication information in the first decoding result, if it is determined that the decoding of the first uplink data fails, after receiving the second decoding result, according to The result of the second decoding result indicates that if the second network device determines that the first uplink data is successfully decoded, the second decoded data is sent to the third network device;

Step 309: The first network device, according to the result indication information in the first decoding result, if it is determined that the decoding of the first uplink data fails, after receiving the second decoding result, according to The result of the second decoding result indicates that if the second network device determines that the decoding of the first uplink data fails, the first decoded data and the second decoded data are performed. Combining decoding, and when the merge decoding is successful, transmitting the third decoded data obtained by the merged decoding to the third network device;

Step 310: The first terminal receives first response information or first control information that is sent by the first network device after receiving the first uplink data, and/or receives that the second network device receives the first Second response information or second control information sent after the uplink data;

Step 311: The first terminal performs uplink transmission according to the first response information, the second response information, the first control information, and the second control information.

As can be seen from the above, in the embodiment of the present application, the first network device and the second network device receive the first uplink data sent by the first terminal, and perform respective decoding. After the second network device decodes the first uplink data, the second network device sends the second response information or the second control information to the first terminal according to the result indication information in the second decoding result, specifically, if After receiving the second response message (ie, ACK) sent by the second network device, the first terminal learns that the first uplink data has been successfully decoded, and determines that the first uplink data is not retransmitted, and if the first terminal receives the second And the second control information sent by the network device determines to retransmit the first uplink data according to the indication of retransmitting the data in the second control information. Since the second response information and the second control information sent by the second network device to the first terminal are not affected by the data interaction delay between the first network device and the second network device, even in the first network device and the first In a scenario where the data interaction delay between the two network devices is large, the first terminal can timely know whether the second network device successfully decodes the first uplink data according to the received second response information or the second control information, and further determines Whether to retransmit the first uplink data, without waiting for the decoding result obtained by the first network device to perform the combined decoding after the second network device sends the decoding result to the first network device, avoiding the prior art A network device can successfully decode the first uplink data, but due to the delay, the first terminal cannot actively know the decoding result of the first uplink data by the first network device, and actively initiates the weight of the first uplink data. Passing, thereby wasting the problem of network transmission resources, and therefore, improving the efficiency of uplink communication.

Similarly, for the first network device, on the one hand, before receiving the second decoding result of the second network device, decoding the first uplink data to obtain a first decoding result; according to the first decoding result The result indication information sends the first response information (ie, ACK or NACK) or the first control information to the first terminal. Specifically, if the first uplink data is successfully decoded, the ACK is sent to the first terminal, where When the uplink data decoding fails, the NACK is fed back to the first terminal, so that the first terminal can obtain the decoding result of the first uplink data by the first network device in time, and after receiving the ACK, determine that the ACK is not retransmitted. The first uplink data avoids the need in the prior art to feed back the decoding result to the first terminal after the first network device receives the decoding result fed back by the second network device, between the first network device and the second network device. When the data interaction delay is large, the first terminal fails to know the decoding result in time, actively retransmits the first uplink data, and wastes the problem of network transmission resources; on the other hand, receives the second network device. After the second decoding result, if the first network device and the second network device fail to decode the first uplink data, the first network device may further perform the first uplink according to the first decoding result and the second decoding result. The data is combined and decoded, thereby increasing the probability of successfully decoding the first uplink data, and thus improving the uplink communication efficiency.

It should be noted that the above step numbers are merely exemplary representations of the execution order, and the order of execution is not specifically limited in the present application. For example, the step 302, the step 303, the step 304, and the step 305 are the actions of the first network device and the second network device respectively after receiving the first uplink data. In the actual application scenario, the two can be simultaneously Accordingly, step 307 and step 308 may be performed after step 302, step 304, and step 306 due to data interaction delay between the first network device and the second network device.

Regarding the above steps 301 to 308, the following points need to be explained:

(1) The first network device in the embodiment of the present invention specifically refers to a serving base station that provides uplink scheduling and mobility management for the first terminal. The second network device specifically refers to a cooperative network device of the first network device, that is, an assisted base station. The cooperative base station may cooperate with the serving base station to cooperatively receive the uplink data sent by the first terminal. The cooperative base station may be a base station adjacent to the serving base station, and is not limited.

(2) After decoding the received first uplink data, the second network device returns a second decoding result to the first network device if the decoding succeeds or fails. Specifically, if the second network device is configured to the first uplink data If the decoding is successful, the second decoded data in the second decoding result is specifically the second decoded data obtained after the successful decoding, and the result indicating information is specifically a decoding success identifier; if the second network device is on the first uplink If the data decoding fails, the second decoded data in the second decoding result is specifically the intermediate data generated by the decoding, or the second decoded data may also be the first uplink data received by the second network device, and the result indication The information is specifically a decoding failure identifier.

(3) After the first network device receives the first uplink data, the information sent to the first terminal may be response information or control information. Specifically, the response information may be an ACK (acknowledgement) or a NACK (negative acknowledgement). The response information is used to enable the first terminal to learn the decoding result of the first uplink data by the first network device: the response information is ACK, indicating that the first network device successfully decodes the first uplink data; the response information is NACK, indicating The first network device fails to decode the first uplink data. The control information is used to schedule the first terminal to send subsequent uplink data. Similarly, after the second network device receives the first uplink data, the information sent to the first terminal may also be response information or control information.

The expansion of the above steps 301 to 310 will be described below.

After the first terminal accesses the first network device, the first network device is responsible for its uplink scheduling and mobility management. For example, the first network device completes uplink scheduling for the first terminal at time T0, and sends terminal information of the first terminal to the second network device. The terminal information includes an RNTI number of the first terminal, a physical cell ID of the first network device, a control channel resource configuration of the first terminal, and a time-frequency resource allocated by the first network device to the first terminal. Correspondingly, the second network device receives the terminal information of the first terminal that is sent by the first network device at time T1, and completes the resolution of the terminal information of the first terminal at time T2, and obtains that the first network device is the first terminal. The allocated time-frequency resources.

The first network device sends the third control information to the first terminal at time T3. The third control information includes a time-frequency resource allocated by the first network device to the first terminal. After successfully parsing the third control information, the first terminal obtains the time-frequency resource allocated by the first network device, and sends the first uplink data on the time-frequency resource.

The first network device receives the first uplink data sent by the first terminal at time T4, and performs decoding to obtain a first decoding result. The first decoding result includes result indication information for decoding the first uplink data by the first network device and first decoded data obtained by decoding.

And determining, according to the result indication information in the first decoding result, the first network device, if it is determined that the first uplink data is successfully decoded, directly transmitting the decoded first decoded data to the third network device (ie, a high layer). The upper layer specifically refers to each layer above the physical layer in each layer of the wireless communication link, including MAC (Media Access Control, Media Intervention Control Layer), RLC (Radio Link Control, Radio Link Layer Control Protocol), and PDCP (Packet). Data Convergence Protocol (Packet Data Convergence Protocol), etc. In the actual application scenario, the decoded data is delivered layer by layer, and each layer may be set in different network devices.

According to the result indication information in the first decoding result, if the first network device determines that the decoding of the first uplink data fails, the time-frequency resource previously allocated for the first terminal is used as the unused time-frequency resource at time T5. Some or all of the time-frequency resources are allocated to other terminals, such as the second terminal, for time-frequency resource multiplexing.

In the embodiment of the present invention, the first network device may send the response information or the control information to the first terminal according to the first decoding result obtained by decoding the first uplink data.

In a first possible implementation manner, the first network device sends the first response information (including an ACK or a NACK) to the first terminal. The first network device sends an ACK to the first terminal according to the result indication information in the first decoding result, if it is determined that the first uplink data is successfully decoded, so that the first terminal learns that the first network device has successfully decoded. An uplink data; if it is determined that the decoding of the first uplink data fails, sending a NACK to the first terminal, so that the first terminal learns that the first network device fails to decode the first uplink data.

In a second possible implementation manner, the first network device sends control information to the first terminal. After the first network device decodes the first uplink data, according to the received first uplink data, if it is determined that the first terminal still has the third uplink data to be sent, the first network device translates the first uplink data. When the code succeeds and the decoding fails, the first control information is sent to the first terminal, and is used to instruct the first terminal to send the third uplink data.

In addition, after the first network device sends the first response information or the first control information, the cooperative terminal information may be sent to the second network device, where the coordinated terminal information includes the first network device sending the first response information or the first control. The power of the information, the first path loss between the first terminal and the first network device, and the second path loss between the first terminal and the second network device, where the coordinated terminal information is specifically used to determine the direction of the second network device. The power when the first terminal transmits the second response information or the second control information.

If the second network device satisfies the condition for receiving the first uplink data integrity (that is, the second network device successfully parses the terminal information of the first terminal at time T2, the first terminal sends the first uplink data at time T4, if the time is T2 If the second network device satisfies the integrity receiving condition, the second network device may complete the first uplink data and decode the first uplink data, and obtain the first uplink data. The second decoding result. The second decoding result includes result indication information for decoding the first uplink data by the second network device, and second decoded data obtained by decoding.

Transmitting, by the second network device, the second decoding result obtained by decoding the first uplink data to the first network device, and sending the second response information or the second control to the first terminal according to the result indication information in the second decoding result Information, the second response information is ACK.

In the embodiment of the present invention, the second network device may successfully decode the first uplink data, and may also fail to decode. Specifically, if the second network device successfully decodes the first uplink data, the second decoded data in the second decoding result is decoded data obtained after successful decoding, and the result indication in the second decoding result is The information is a decoding success identifier; if the second network device fails to decode the first uplink data, the second decoding data in the second decoding result is the decoding intermediate data obtained in the decoding process or the second network device receives The original first uplink data is obtained, and the result indication information in the second decoding result is a decoding failure identifier.

Correspondingly, in the embodiment of the present invention, the second network device may send the second response information (ie, ACK) or the second control information to the first terminal according to the result indication information in the second decoding result, and thus, the following Two possible implementations.

In a first possible implementation manner, the second network device sends the second response information to the first terminal, where the second response information is specifically an ACK. Specifically, the second network device sends an ACK to the first terminal when the first uplink data is successfully decoded, and does not send the NACK to the first terminal if the first uplink data fails to be decoded.

In the embodiment of the present invention, after successfully decoding the first uplink data, the second network device directly sends an ACK to the first terminal, so that the first terminal learns that the first uplink data has been successfully decoded, and does not need to retransmit again. Therefore, the function of transmitting and retransmitting data of the first terminal is effectively controlled, and the invalid retransmission of the first terminal is effectively avoided, thereby improving the efficiency of uplink distributed reception. Moreover, compared with the prior art, the embodiment of the present invention does not need to merge the uplink data received by the first network device and the second network device after the first uplink data received by the second network device is sent to the first network device. After decoding, the response information of the successfully decoded is fed back to the first terminal. Therefore, the uplink data transmission of the first terminal is not affected by the data interaction delay between the first network device and the second network device, and the uplink communication efficiency is affected. higher.

In a second possible implementation manner, the second network device sends the second control information to the first terminal. Specifically, the second network device sends the second control information to the first terminal when the first uplink data fails to be decoded, where the second control information is used to instruct the first terminal to retransmit the first uplink data, and In the case of successful uplink data decoding, only The decoded second decoding result (including the second decoding data and the result indication information) is sent to the first network device, and the control information is not sent to the first terminal.

The first network device and the second network device can send control information to the first terminal according to the decoding result of decoding the first uplink data, so as to implement timely and effective control on whether the first terminal retransmits the data, and effectively The first terminal is prevented from performing an invalid retransmission.

In the embodiment of the present application, before the second network device sends the second response information or the second control information to the first terminal, the method further includes: receiving the coordinated terminal information sent by the first network device, and according to the first path loss in the coordinated terminal information The second path loss is determined by determining a difference between the first terminal and the first network device and the second network device, and combining the first power and the preset power adjustment threshold, and determining the second network device by using the following formula: The second power when the second response information or the second control information is sent to the first terminal:

Wherein P ₁ is the power when the first network device sends the first response information or the first control information, and P ₂ is the power when the second network device sends the second response information or the second control information, where PL ₁ is the first terminal. a first path loss between the first network device, PL ₂ is a second path between the first terminal and the second network device loss, THR network device to a second predetermined threshold power adjustment.

The second network device sends the second response information or the second control information to the first terminal by using the determined second power.

In the embodiment of the present invention, the second network device may be configured according to the first power when the first network device sends the first response information or the first control information, and the path between the first terminal and the first network device and the second network device, respectively. The loss and the preset power adjustment threshold adjust the power when the second network device sends the second response information or the second control information, which can effectively improve the probability that the first terminal successfully detects the second response information or the second control information. Therefore, the second network device implements more efficient auxiliary scheduling control for uplink data transmission of the first terminal. In particular, when the first network device fails to decode the first uplink data, and the second network device successfully decodes the first uplink data, the first network device sends a NACK to the first terminal, and the second network device sends The first terminal sends an ACK, and the power of the ACK when the second network device sends the ACK is adjusted in the foregoing manner, which may improve the probability that the first terminal successfully detects the ACK, and further prevent the first terminal from transmitting invalid retransmission data. Effectively avoid interference with the second terminal of the multiplexed time-frequency resource.

When the data interaction delay between the first network device and the second network device is large, the first network device may take a long time to receive the second decoding result sent by the second network device. Moreover, since the first network device and the second network device independently decode the received first uplink data, the first network device receives the first combination of the first decoding result and the second decoding result. After the second decoding result of the network device, there are many possible processing modes.

Specifically, after the first network device decodes the first uplink data, if the decoding succeeds, if the second network device successfully decodes the first uplink data and fails to decode, the second decoding is performed. The results were not processed.

If the first network device fails to decode the first uplink data, processing is performed according to the second decoding result. Specifically, according to the result indication information in the second decoding result, if it is determined that the second network device successfully decodes the first uplink data, sending the second decoded data decoded by the second network device to the third network If it is determined that the second network device fails to decode the first uplink data, the second decoding data in the first decoding result and the second decoding data in the second decoding result are combined and decoded, and When the merge decoding is successful, the third decoded data obtained by the merged decoding is directly sent to the third network device. If the merge decoding fails, the multiplexed uplink data that is subsequently received may be processed again.

For the first terminal, the first terminal receives the first response information or the first control information that is sent by the first network device after receiving the first uplink data, and the second network device sends the first uplink data after receiving the first uplink data. Second response information or second control information. Specifically, the first terminal sends the first uplink data at time T4, and performs information detection after the preset time interval to determine whether the first response information, the first control information, the second response information, and the second are received. Control information.

The first terminal performs uplink transmission according to the first detected first response information, the first control information, the second response information, and the second control information. Specifically, the first terminal may perform different processing according to whether the type of the received information is response information or control information.

In a first possible implementation manner, the first network device and the second network device both send response information, that is, ACK or NACK. According to whether the first response information sent by the first network device is an ACK or a NACK, and whether the second network device sends an ACK, the first response information and the second response information received by the first terminal will exist as shown in the following table. Situation:

Table 1: Different situations of response information received by the first terminal

情形situation	终端接收到的第一应答信息First response message received by the terminal	终端接收到的第二应答信息Second response message received by the terminal
情形1Situation 1	ACKACK	ACKACK
情形2Situation 2	ACKACK	未接收到(第二网络设备未发送)Not received (the second network device is not sent)
情形3Situation 3	NACKNACK	ACKACK
情形4Situation 4	NACKNACK	未接收到(第二网络设备未发送)Not received (the second network device is not sent)

Based on the four situations of the response information received by the first terminal, the first terminal does not have the control channel indication information, and if the first response information and/or the second response information is detected, a response message is After the ACK, it is determined that the first uplink data is not retransmitted, otherwise the first uplink data is retransmitted. For example, in case 1, case 2, and case 3 in the above table, since the first terminal receives the ACK, the first uplink data will not be retransmitted; in case 4, the first terminal only receives the first network device. NACK, and the second network device does not send an ACK, and the first terminal retransmits the first uplink data without the control channel indication information.

It can be seen from Table 1 that the first network device and the second network device independently decode the first uplink data, and send the first response information and the second response information to the first terminal respectively, so that the first terminal is timely Obtaining whether the first uplink data is successfully decoded, thereby implementing distributed control of whether the first terminal retransmits the first uplink data, so that the first terminal fails to decode only in the first network device and the second network device. Then, the first uplink data is retransmitted, thereby greatly reducing the probability that the first terminal needs to retransmit the first uplink data, and effectively avoiding the invalid data retransmission of the first terminal, thereby improving the uplink communication efficiency.

In a second possible implementation manner, the first network device and the second network device both send control information. Specifically, the first network device sends the first control information to the first terminal when determining that the first terminal still has the third uplink data to be sent, and the second network device fails to decode the first uplink data. A terminal sends the second control information. Therefore, the first control information and/or the second control information received by the first terminal will also have four situations as shown in Table 2 below:

Table 2: Different situations of control information received by the first terminal

Based on the four situations of the control information received by the first terminal, the first terminal is different according to the received different control information, because the time-frequency resource locations included in the first control information and the second control information are different. Take different uplink data transmission behavior. For example, in case 2 and case 3, the first terminal only obtains one control information, and then performs uplink data transmission according to the control information. If the control information is the first control information, the first terminal sends a subsequent to be sent. The third uplink data; if the control information is the second control information, the first terminal retransmits the first uplink data. In the first case, the first terminal may obtain the first control information and the second control information at the same time, and the first terminal may select to send the third uplink data to be sent according to the first control information, or may select the priority according to the second control. The information retransmits the first uplink data, and no specific restrictions are made here.

It should be noted that, if the first terminal preferentially retransmits the first uplink data according to the second control information, and the first network device may consider that the first terminal sends the third uplink data to be sent subsequently, the first network device may First, the data is decoded according to the first control information. If the decoding fails, the data is decoded according to the second control information. If the decoding still fails, the retransmission scheduling is performed.

As can be seen from the above table, the first network device and the second network device independently send control information to the first terminal according to the decoding result of the first uplink data, thereby implementing effective control on the retransmission data of the first terminal. The first network device is also effectively prevented from performing invalid retransmission scheduling, thereby achieving the purpose of improving the uplink data transmission rate of the terminal.

In the embodiment of the present invention, in the scenario that the first network device and the second network device send the response information to the first terminal, when the first network device and the second network device fail to decode the first uplink data, When a network device sends a NACK to the first terminal, and the second network device does not send an ACK to the first terminal, the first terminal determines to retransmit the first uplink data, and multiplexes the time-frequency resources.

Specifically, the first network device may allocate part or all of the time-frequency resources occupied by the first terminal to the second terminal, where the second terminal is any terminal different from the first terminal, and therefore, the first network device is at T6. The multiplexed uplink data sent by the first terminal and the second terminal is received at a time. The multiplexed uplink data includes first uplink data retransmitted by the first terminal by using the previously allocated time-frequency resources, and second uplink data sent by the second terminal.

In the embodiment of the present application, the time-frequency resources occupied by the first terminal and the second terminal may at least partially overlap. FIG. 3b is a pair of time-frequency resources occupied by the first terminal and the second terminal in multiplexing uplink data according to the first embodiment of the present invention; Than the schematic. As shown in FIG. 3b, in the prior art, if the first network device fails to decode the first uplink data, the first network device allocates a retransmission for the first terminal after the specified retransmission delay. a time-frequency resource of the uplink data, the time-frequency resource is the same as the time-frequency resource allocated for the first terminal for transmitting the first uplink data, and the first network device does not allow other terminals to occupy the heavy-duty resource. The time-frequency resource of the first uplink data is transmitted. In the embodiment of the present invention, if the first network device fails to decode the first uplink data, the first network device does not reserve the original time-frequency resource for the first terminal, and is used to retransmit the first uplink data, but allows The other terminal is free to occupy the time-frequency resource originally allocated to the first terminal. However, although the first network device does not reserve the original time-frequency resource for the first terminal, the first terminal may still be heavy on the originally allocated time-frequency resource. The first uplink data is transmitted, thereby improving the utilization of resources.

If the time-frequency resources occupied by the first terminal and the second terminal at least partially overlap, interference exists between the first terminal and the second terminal in the multiplexed uplink data. Decoding result of the first uplink data by the first network device and the second network device respectively, and decoding result of the first network device performing combined decoding according to the first decoding result and the second decoding result, the first network After receiving the multiplexed uplink data, the device can adopt different processing modes, including the following two situations.

In the first case, the first network device and the second network device fail to decode the first uplink data, but if the first network device successfully combines the first decoding result and the second decoding result, The first network device has sent the decoded data obtained by the merged decoding to the third network device, and then, when receiving the multiplexed uplink data, the first uplink data retransmitted by the first terminal is not processed, but only Processing the second uplink data sent by the second terminal.

Specifically, the first network device obtains the second uplink data from the multiplexed uplink data, and performs decoding. At the same time, the first network device obtains time-frequency resources occupied by the first terminal and the second terminal in the multiplexed uplink data, and if it is determined that the time-frequency resources occupied by the first terminal and the second terminal overlap, The decoded data obtained after the uplink data is successfully decoded, and the channel estimation result, reconstruct the uplink received signal of the first uplink data on the overlapping time-frequency resources. If the first network device successfully decodes the second uplink data, directly transmitting the successfully decoded data to the third network device, if the decoding of the second uplink data fails, and the first terminal and the second terminal If the time-frequency resources occupied by the terminal overlap, the uplink received signal of the first uplink data reconstructed on the overlapping time-frequency resources is used to cancel the interference of the first terminal to the second terminal, and then the second in the multiplexed uplink data. The uplink data is decoded again. If the decoding is successful, the successfully decoded data is directly sent to the third network device, otherwise the second terminal is re-scheduled.

In the second case, the first network device and the second network device fail to decode the first uplink data, and the first network device fails to combine the first decoding result and the second decoding result. The first network device respectively obtains the first uplink data retransmitted by the first terminal in the multiplexed uplink data and the second uplink data sent by the second terminal, according to the first decoded data, the second decoded data, and the multiplexing. The first uplink data retransmitted by the first terminal in the uplink data is re-combined and decoded, and the second uplink data is decoded.

If the re-combination is successful, the data obtained after the successful decoding is directly sent to the third network device, and the time-frequency resources occupied by the first terminal and the second terminal in the multiplexed uplink data are respectively obtained. If it is determined that the time-frequency resources occupied by the first terminal and the second terminal overlap, the decoded data obtained after the successful decoding and the channel estimation result are reconstructed on the time-frequency resources overlapped by the first terminal and the second terminal. The uplink received signal of the first uplink data.

If the decoding of the second uplink data is successful, the decoded data obtained by the successful decoding is directly sent to the third network device. If the decoding of the second uplink data fails, and the time-frequency resources occupied by the first terminal and the second terminal overlap in the multiplexed uplink data, the uplink of the first uplink data reconstructed on the overlapping time-frequency resources is utilized. After receiving the signal, eliminating the interference of the first terminal to the second terminal, decoding the second uplink data again, if the decoding is successful, directly transmitting the decoded data obtained by the successful decoding to the third network device, otherwise The second terminal performs rescheduling.

If the re-combination decoding fails, the first terminal is re-scheduled. At this time, if the second uplink data is decoded, Failure, the second terminal is also re-scheduled.

Due to the data interaction delay between the first network device and the second network device, if the time delay is large, the first network device cannot know in time whether the second network device successfully decodes the first uplink data or fails. When the first network device fails to decode the first uplink data, the first network device actively performs multiplexing of the time-frequency resources, so that the second terminal can send the time-frequency resource that is at least partially overlapped with the time-frequency resource originally allocated for the first terminal. The uplink data, and the delay between the combined decoding and interference cancellation techniques and the reduction of interference between the multiplex terminals caused by the multiplexing of time-frequency resources can effectively improve the system capacity.

It should be noted that, in the embodiment of the present invention, the T0 time is the time when the first network device sends the terminal information of the first terminal to the second network, and in the actual application scenario, the T0 time is the uplink scheduling of the first terminal. The reference time, the time T1 is the time when the second network device receives the terminal information of the first terminal, and the time interval between the time T0 and the time T1 is the data interaction delay between the first network device and the second network device. The time T3 is the time when the first network device sends the third control information to the first terminal. In the actual application scenario, the time interval between the T0 time and the T3 time is a fixed time interval, and the fixed time interval is determined by a specific communication system or The network protocol specifies that the time when the first terminal successfully parses the third control information after the first terminal successfully parses the first uplink data is also the time when the first network device and the second network device start to receive and decode the first uplink data. The time interval T5 is a time when the first network device performs multi-terminal multiplexing after determining the decoding result. In a specific application scenario, the time interval between the T3 time and the T5 time is a fixed time interval, and the fixed time interval is It is specified by a specific communication system or network protocol. At time T6, the time at which the multiplexed uplink data is multiplexed is transmitted, and there is a fixed time interval between the time T4 and the time T6, and the size of the fixed time interval is specified by a specific communication system or a network protocol.

The cooperative receiving process of the uplink data described in the first embodiment will be specifically described below based on the system architecture shown in FIG. 2 in combination with the second embodiment to the fourth embodiment.

Embodiment 2

In the second embodiment, the first network device and the second network device both send response information to the first terminal.

4 is a schematic flowchart of a method for cooperatively receiving uplink data according to Embodiment 2 of the present invention. As shown in FIG. 4, the method includes the following steps 401 to 409:

Step 401: The serving base station completes uplink scheduling of the first terminal, and sends terminal information of the first terminal to the cooperative base station. The terminal information of the first terminal includes an RNTI number of the first terminal, a physical cell ID of the serving base station, a control channel resource configuration of the first terminal, and a time-frequency resource allocated by the serving base station to the first terminal.

Step 402: After the cooperative base station receives the terminal information of the first terminal, parsing the terminal information of the first terminal. Here, the time interval between the transmission of the terminal information of the first terminal from the serving base station to the terminal information of the first terminal received by the cooperative base station is a data interaction delay between the serving base station and the cooperative base station.

Step 403: The serving base station sends the third control information to the first terminal, where the third control information includes the time-frequency resource allocated by the serving base station to the first terminal, and the designated time allocated by the serving base station after the first terminal successfully parses the third control information. The first uplink data is sent on the frequency resource.

Step 404: If the cooperative base station satisfies the condition of the integrity receiving, that is, the cooperative base station completes the parsing of the terminal information of the first terminal and obtains the time-frequency resources occupied by the first terminal before the first terminal sends the first uplink data, and then cooperates. The base station can simultaneously receive the first uplink data sent by the first terminal with the serving base station, and separately decode the first uplink data. Otherwise, only the serving base station receives and decodes the first uplink data of the first terminal.

Step 405: The serving base station feeds back the first response information to the first terminal according to the decoding result of the first uplink data. Specifically, if the first uplink data is successfully decoded, the ACK is sent to the first terminal in the corresponding feedback channel, and the successfully decoded data is reported to the upper layer;

If the decoding of the first uplink data fails, the NACK is sent to the first terminal in the corresponding feedback channel, and in the case that the decoding of the first uplink data fails, the time-frequency resource occupied by the serving base station to the first terminal The multiplexing is performed, specifically, the time-frequency resource for the retransmission scheduling is not allocated to the first terminal, and the original allocated time-frequency resource is not reserved for the first terminal, but the time-frequency resource originally allocated for the first terminal is used. As a time-frequency resource that can be freely occupied by other terminals, for example, a time-frequency resource for free scheduling can be allocated to the second terminal, and the time-frequency resource allocated to the second terminal may be at least the time-frequency resource occupied by the first terminal. Partial overlap. It should be noted that although the serving base station does not reserve time-frequency resources to the first terminal, the first terminal may still transmit retransmission data, which is related to the application communication system or the adopted protocol. For example, in the LTE system, if the serving base station only sends a NACK to the first terminal, the first terminal resends the retransmission data at the time-frequency resource location occupied by the last time the data was transmitted. If the serving base station has allocated the part of the resource to the second terminal, the two terminals will have interference with each other when transmitting the uplink data.

Step 406: The cooperative base station feeds back the second response information to the first terminal according to the decoding result of the first uplink data, and feeds back the second decoding result to the serving base station. Specifically, if the cooperative base station successfully decodes the first uplink data, the ACK is sent to the first terminal in the corresponding feedback channel, and the second decoding result is sent to the serving base station. In the case that the decoding is successful, the result indication information in the second decoding result is a decoding success identifier, and the first decoding data is specifically the decoded data obtained after successfully decoding the first uplink data.

If the decoding of the first uplink data fails, only the second decoding result is sent to the serving base station. In the case that the decoding fails, the second decoding result terminal result indication information is a decoding failure identifier, and the first decoding data is specifically related data of the first terminal. In the embodiment of the present invention, the first terminal The related data may be the original first uplink data received by the cooperative base station, or may be the intermediate data in the decoding process. The data type of the related data of the first terminal is not specifically limited.

In step 407, the serving base station can obtain the decoding result of the first uplink data by the cooperative base station after the cooperative base station sends the second decoding result for a period of time due to the data interaction delay between the serving base station and the cooperative base station.

For the serving base station, if the serving base station successfully decodes the first uplink data, when the second decoding result sent by the cooperative base station is received, no processing is performed. The second decoding result may be a second decoding result that is sent when the cooperative base station successfully decodes, or may be a second decoding result that is sent by the cooperative base station when the decoding fails. If the serving base station fails to decode the first uplink data, after transmitting the NACK to the first terminal, multiplexing the time-frequency resources occupied by the first terminal, and waiting for the data returned by the coordinated base station to arrive, the subsequent processing is performed. If the second decoding result received by the serving base station is a second decoding result that is sent when the cooperative base station successfully decodes the first uplink data, the serving base station successfully decodes the first uplink data in the second decoding result. The data is reported to the upper layer; if the second decoding result received by the serving base station is the second decoding result sent by the cooperative base station when the first uplink data fails to be decoded, the serving base station compares itself to the received first uplink data and The related data of the first terminal sent by the cooperative base station is combined and decoded, and is further processed based on the combined decoding result.

If, in step 407, the service base station merges and decodes successfully, the merged and decoded data is directly reported to the upper layer, and when the multiplexed uplink data sent by the first terminal and the second terminal is subsequently received, the following step 408 is performed in sequence. Step 410. If the multiplexed uplink data sent by the first terminal and the second terminal is received in step 407, the following steps 411 to 412 are performed in sequence. The multiplexed uplink data includes the first uplink data retransmitted by the first terminal and the second uplink data sent by the second terminal.

Step 408: Acquire a time-frequency resource location occupied by the first terminal and the second terminal in the multiplexed uplink data, if If there is overlap between the two, the uplink received signal on the overlapping time-frequency resource is reconstructed according to the successfully decoded data of the first terminal and the channel estimation result; if the time-frequency resources do not overlap, no processing is performed.

Step 409: Perform reception decoding on the second uplink data in the multiplexed uplink data. If the decoding is successful, the data is directly reported to the upper layer; if the decoding fails, and the reconstruction processing of the uplink received signal of the first terminal is performed in the previous step, the reconstructed first terminal is eliminated on the overlapping time-frequency resources. After the uplink receiving signal, the second uplink data is re-decoded. If the decoding is successful, the corresponding data is directly reported to the upper layer, otherwise the second terminal is retransmitted.

Step 410: Perform another merge and decode according to the first uplink data retransmitted by the first terminal in the multiplexed uplink data and the merged decoded data of the serving base station. The merged decoded data is final data obtained by the serving base station using the first uplink data received by itself and the related data of the first terminal returned by the coordinated base station to perform combined decoding and decoding.

Step 411: If the serving base station merges and decodes again successfully, the data is directly reported to the upper layer. At the same time, the second uplink data in the multiplexed uplink data is decoded, and the time-frequency resource positions occupied by the first terminal and the second terminal in the multiplexed uplink data are obtained, and if there is overlap between the two, according to the The data successfully decoded by the terminal and the channel estimation result reconstruct the uplink received signal on the overlapping time-frequency resources; if the time-frequency resources do not overlap, no processing is performed. If the serving base station fails to merge and decode again, the serving base station performs retransmission scheduling on the first terminal.

Step 412: If the serving base station successfully decodes the second uplink data, directly reporting the corresponding data to the upper layer; if the decoding fails, and performing the reconstruction processing on the uplink received signal of the first terminal, the overlapping time frequency is The uplink received signal of the reconstructed first terminal is removed by the resource, so as to cancel the interference of the first terminal to the second terminal, and the second terminal is again received and decoded. If the decoding is successful, the corresponding data is directly reported to the upper layer, otherwise Retransmission scheduling is performed on the second terminal.

After receiving the third control information sent by the serving base station, the first terminal sends the first uplink data after the corresponding first preset time interval, and after the preset second preset time interval (protocol agreement) The response information is detected. Taking LTE as an example, according to the transmission status of the response information, there are several cases as shown in the following table:

Table 3: Different situations of the response status of the response information of the serving base station and the cooperative base station

情形situation	服务基站的应答信息发送状态The response status of the serving base station	协作基站的应答信息发送状态Response status of the cooperative base station
情形1Situation 1	服务基站发送ACKThe serving base station sends an ACK	协作基站不发送ACKCooperative base station does not send ACK
情形2Situation 2	服务基站发送ACKThe serving base station sends an ACK	协作基站发送ACKCooperative base station sends ACK
情形3Situation 3	服务基站发送NACKThe serving base station sends a NACK	协作基站不发送ACKCooperative base station does not send ACK
情形4Situation 4	服务基站发送NACKThe serving base station sends a NACK	协作基站发送ACKCooperative base station sends ACK

Based on the four scenarios of the response information transmission status of the serving base station and the cooperative base station described above, in the case 1, the second terminal in the case 2 does not transmit the retransmission data without the control channel information indication; in case 3, The first terminal retransmits the first uplink data when there is no control channel information indication; in case 4, if the first terminal successfully detects the ACK, if there is no control channel information indication, the retransmission data is not sent. .

Further, in order to improve the probability that the first terminal detects the ACK, avoid the retransmission data transmission that is invalid for the terminal, and interfere with the multiplexed time-frequency resource terminal, the cooperative base station may further respond to the power when the ACK is sent to the first terminal. The adjustment, as shown in FIG. 5, specifically includes the following steps 501 to 503:

Step 501: The serving base station sends the first response information (including ACK or NACK) to the first terminal.

Step 502: Send the coordinated terminal related information to the cooperative base station. The coordinated terminal related information includes power used by the serving base station to send the first response information to the first terminal, and path loss information between the first terminal and the serving base station, and a path loss between the first terminal and the cooperative base station.

Step 503: After receiving the coordinated terminal related information sent by the serving base station, the cooperative base station determines, according to the signal strength information, a difference in signal strength between the serving base station and the cooperative base station.

The cooperative base station determines, according to the first power of the first terminal, the first power of the first terminal, the signal strength difference between the first base station and the serving base station, and the preset power adjustment threshold, and determines the direction to the first terminal according to the following formula. The second power when the second response information (ie, the ACK) is sent, that is, if the power of the first base station to send the first response information is P1, the path loss difference between the serving base station and the cooperative base station is S0 (the service node) The path loss/coordination node path loss is adjusted to: the second power P2 of the coordinated base station transmitting the second response information (ie, ACK) is:

Wherein P ₁ is the power when the serving base station transmits the first response information, P ₂ is the power when the coordinated base station transmits the second response information (ie, ACK), and PL ₁ is the path loss between the first terminal and the serving base station, PL ₂ is a path loss between the base station cooperating with the first terminal, the first terminal path loss difference between the serving base station, the cooperative station S0 is the path loss PL ₁ and the first terminal between the terminal and the serving base station a first The ratio of the path loss between the cooperative base station, that is, PL ₁ /PL ₂ , THR is the preset power adjustment threshold of the cooperative base station, and the path loss values PL ₁ , PL ₂ , the first terminal are at the serving base station, and the cooperative base station The path loss difference S0 and the power values P1, P2, and THR are all linear values greater than zero.

Step 504: The cooperative base station sends the second response information to the first terminal by using the second power.

Step 505: The first terminal detects the second response information.

Embodiment 3

The third embodiment is specifically another embodiment in which the first network device and the second network device send the response information to the first terminal. Compared with the second embodiment, the difference is that both the first terminal and the second terminal are connected. When the base station fails to decode the uplink data of the first terminal, the second base station does not feed back the second response information to the first terminal, but only the first response information sent by the serving base station indicates that the first terminal performs subsequent processing.

FIG. 6 is a schematic flowchart of a method for cooperatively receiving uplink data according to Embodiment 3 of the present invention. As shown in FIG. 6, the method includes the following steps 601 to 610:

Step 601: After the serving base station finishes allocating the uplink scheduling to the first terminal, the serving base station sends the terminal information of the first terminal to the cooperative base station. The terminal information of the first terminal includes an RNTI number of the first terminal, a physical cell ID of the serving base station, a control channel resource configuration of the first terminal, and a time-frequency resource allocated by the serving base station to the first terminal. The base station sends scheduling information to the first terminal through the control channel at time T0.

Step 602: After receiving the terminal information of the first terminal, the cooperative base station parses the terminal information of the first terminal.

Step 603: The serving base station sends the third control information to the first terminal, where the third control information includes the time-frequency resource allocated by the serving base station to the first terminal, and the first terminal receives and successfully parses the third control information, and then allocates at the serving base station. The first uplink data is sent on the specified time-frequency resource.

Step 604: If the cooperative base station satisfies the condition of the integrity reception, that is, the cooperative base station completes the parsing of the terminal information of the first terminal, and learns the time-frequency resources occupied by the first terminal, before the first terminal sends the first uplink data, and cooperates. The base station can simultaneously receive the first uplink data sent by the first terminal with the serving base station, and separately decode the first uplink data. Otherwise, only the serving base station receives and decodes the first uplink data of the first terminal.

Step 605: The serving base station performs the following processing according to the decoding result of the first uplink data:

If the decoding is successful, the decoded first decoded data is reported to the upper layer, and the ACK is sent to the first terminal in the feedback channel, and the first terminal is allowed to perform uplink scheduling of new data; if the decoding fails, the translation is saved. The intermediate data of the code process sends a NACK to the first terminal in the feedback channel, and allows the second terminal to occupy the time-frequency resource occupied by the first terminal when transmitting the first uplink data, and waits for the decoding result of the cooperative base station to arrive.

Step 606: The cooperative base station sends the decoding result of the first uplink data to the serving base station. Wherein, when the cooperative base station successfully decodes the first uplink data, the decoded result includes the successfully decoded data. When the cooperative base station fails to decode the first uplink data, the decoding result includes the intermediate data in the decoding process or the original data received by the cooperative base station.

Step 607: After receiving the decoding result sent by the cooperative base station, if the serving base station successfully decodes in step 605, the decoding result of the cooperative base station is not processed, for example, it may be directly discarded. If the serving base station fails to decode in step 605, but the cooperative base station successfully decodes the first uplink data, the successfully decoded data is reported to the upper layer; if the serving base station fails to decode in step 605, the cooperative base station pairs If the uplink data decoding also fails, the first decoding data according to the first decoding data and the second decoding data of the cooperative base station are combined and decoded, and the subsequent processing is performed based on the decoding result, that is, if the combined decoding is successful, after the decoding is performed, the decoding is performed. The data is sent to the upper layer and the successfully decoded data is saved; if the merge decoding fails, the intermediate data of the decoding process is saved.

Step 608: The serving base station receives the multiplexed uplink data sent by the first terminal and the second terminal (the multiplexed uplink data includes the first uplink data retransmitted by the first terminal and the second uplink data sent by the second terminal), and Do the following:

If the serving base station successfully decodes the result in step 605, or the serving base station determines that the time-frequency resources occupied by the first terminal and the second terminal do not overlap in the multiplexed uplink data, multiplexing the first terminal and the second terminal The uplink data is normally received and decoded without special processing. Otherwise, proceed as follows:

For the first terminal, it is determined whether the merge decoding in step 607 is successful. If the merge decoding fails, the uplink data and the merged decoded data sent by the first terminal of the multiplexed uplink data are re-decoded, if combined decoding Successfully, the decoded data is reported to the upper layer, and the successfully decoded data is saved, otherwise the intermediate data of the decoding process is saved. Wherein, the merged decoded data refers to intermediate data saved in the merge decoding process.

For the second terminal, the second uplink data sent by the second terminal in the multiplexed uplink data is obtained and decoded. If the decoding is successful, the decoded data is reported to the upper layer, and the successfully decoded data is saved; otherwise, the intermediate data in the decoding process is saved.

Step 609: If in step 608 above, if both the merge decoding of the first terminal and the decoding of the second terminal are successful, no subsequent processing is performed.

If both the merge decoding of the first terminal and the decoding of the second terminal fail, the serving base station performs retransmission scheduling on the first terminal and the second terminal.

If the first terminal merges and decodes successfully, the uplink received signal of the first terminal on the overlapping time-frequency resource is reconstructed according to the successfully decoded data of the first terminal, and the uplink of the first terminal is eliminated in the multiplexed uplink data. After receiving the signal, the uplink data of the second terminal is reacquired and decoded again. If the decoding is correct again, the decoded data is reported to the upper layer, otherwise, the second terminal is re-scheduled.

If the second terminal merges and decodes successfully, the uplink received signal of the second terminal on the overlapping time-frequency resource is reconstructed according to the successfully decoded data of the second terminal, and the uplink of the second terminal is eliminated in the multiplexed uplink data. After receiving the signal, the uplink data of the first terminal is re-acquired and decoded again. If the decoding is correct again, the decoded data is reported to the upper layer, otherwise, the first terminal is re-scheduled.

Embodiment 4

In the fourth embodiment, the first network device and the second network device both send control information to the first terminal. The difference from the second embodiment and the third embodiment is that when the serving base station fails to decode the uplink data of the first terminal, the time-frequency resource occupied by the first terminal is not multiplexed, but the first control information is sent to indicate the first The terminal performs subsequent processing.

FIG. 7 is a schematic flowchart of a method for cooperatively receiving uplink data according to Embodiment 4 of the present invention. As shown in FIG. 7, the method includes the following steps 701 to 706:

Step 701: After completing the uplink scheduling of the first terminal, the serving base station sends the terminal information M1 of the first terminal to the cooperative base station. The terminal information M1 of the first terminal includes at least RNTI of the first terminal, a physical cell ID of the serving base station, and scheduling information such as a time-frequency resource allocated by the serving base station to the first terminal.

Step 702: After receiving the terminal information M1 of the first terminal, the cooperative base station parses the M1 to obtain a time-frequency resource allocated by the serving base station to the first terminal. Here, the time interval between the transmission of the M1 from the serving base station and the reception of the M1 by the cooperative base station is the data interaction delay between the serving base station and the cooperative base station.

Step 703: The serving base station sends the control information S1 to the first terminal. After receiving and parsing the control information S1, the first terminal sends the first uplink data at the corresponding time and the time-frequency resource location.

Step 704: If the cooperative base station satisfies the condition of the integrity reception, that is, the cooperative base station completes the parsing of the terminal information M1 before the first terminal sends the first uplink data, and learns the time-frequency resources occupied by the first terminal, the serving base station and the cooperative base station. At the same time, the first uplink data is received and decoded separately. The uplink data received by the serving base station is D1, and the uplink data received by the cooperative base station is D2.

Step 705: The serving base station performs subsequent processing according to the decoding result of the uplink data D1. Specifically, if the decoding is successful, the decoded data is sent to the upper layer. If the decoding fails, it is determined whether the first terminal has data to be scheduled. If the first terminal has data to be scheduled, the conventional new data scheduling is performed, and the control information S2 is sent to the first terminal. The control information S2 is used to instruct the first terminal to send subsequent data to be scheduled. It should be noted that although the decoding of the uplink data D1 fails, the serving base station does not perform retransmission scheduling on the first terminal.

Step 706: The cooperative base station sends the decoding result of the uplink data D2 to the serving base station, and sends control information to the first terminal according to the decoding result, as shown in FIG. 7b. Specifically, when the decoding is successful, the decoding success information and the decoded data are sent to the service node. When the decoding fails, the cooperative base station sends the decoding failure information and the decoded intermediate process data to the serving base station; on the other hand, according to the terminal information M1, acquires the time-frequency resource location of the terminal control channel (the position and control) The information S2 is in the same position, and the control information S3 is transmitted to the first terminal at other time-frequency resource locations. The control information S3 is used to instruct the first terminal to retransmit the uplink data on another specified time-frequency resource.

Step 707: Since there is a certain data interaction delay between the serving base station and the cooperative base station, after receiving the decoding result sent by the coordinated base station, if the serving base station successfully decodes the uplink data D1, the serving base station directly discards the cooperation from the collaboration. As a result of the decoding of the base station, if the serving base station fails to decode the uplink data D1, the following processing is performed according to the decoding result of the uplink data D2 by the cooperative base station:

If the cooperative base station successfully decodes the uplink data D2, and after receiving the decoding result sent by the cooperative base station, the serving base station reports the decoded data of the cooperative base station to the upper layer; if the cooperative base station fails to decode the uplink data D2, the serving base station fails. After receiving the decoding result sent by the coordinated base station, the first decoded data obtained by decoding the uplink data D1 and the second decoded data obtained by the cooperative station decoding uplink data D2 are combined and decoded, and if the decoding is correct, The decoded data is reported to the upper layer, and if the decoding fails, the first terminal is retransmitted.

After receiving the control information S1 and transmitting the uplink data, the first terminal needs to wait for the control information of the serving base station and the cooperative base station to arrive, and performs subsequent processing according to the control information of the serving base station and the cooperative base station. Since the processes of the control base station and the cooperative base station transmitting the control information are independent of each other, the control information received by the terminal may face the following situations:

Table 4: Different situations of control information received by the first terminal

Based on the four situations of the control information received by the first terminal, in the case 1, the serving base station does not send the control information S2, and the cooperative base station does not send the control information S3, indicating that the first terminal has no pending data, and cooperates. The base station successfully decodes the uplink data D2. In this case, the first terminal does not perform uplink data transmission.

In the case 2, the serving base station does not send the control information S2, and the cooperative base station sends the control information S3, indicating that the first terminal has no pending data, and the cooperative base station fails to decode the uplink data D2. In this case, the first terminal follows the control. The information S3 performs retransmission of the uplink data.

In the case 3, the serving base station sends the control information S2, the cooperative base station does not send the control information S3, indicating that the first terminal has new scheduling data, and the cooperative base station successfully decodes the uplink data D2. In this case, the first terminal follows the control. The information S2 performs transmission of uplink data to be scheduled.

In the case 4, the serving base station sends the control information S2, and the cooperative base station sends the control information S3, indicating that the first terminal has data to be scheduled subsequently, and the cooperative base station fails to decode the uplink data D2. The first terminal may only successfully obtain one of the control information S2 and the control information S3, and then send the uplink data according to the control information, because the control device S2 and the S3 indicate that the time-frequency position of the first terminal is different. If the first terminal acquires the control information S2 and the control information S3 at the same time, the first terminal may select to preferentially send the uplink data to be scheduled, or may choose to retransmit the uplink data preferentially.

In the embodiment of the present invention, the behavior of the first terminal is not specifically restricted. In the case that the first terminal simultaneously acquires the control information S2 and the control information S3, the serving base station first considers that the first terminal sends the uplink data to be scheduled, and the first terminal may actually retransmit the uplink data, and the serving base station firstly The data to be scheduled is decoded based on the control information S2. If the decoding fails, the retransmitted uplink data is decoded based on the control information S3. If the decoding still fails, the first terminal is retransmitted.

Further, in order to improve the probability that the first terminal successfully detects the control information S3 when the cooperative base station transmits the control information S3, to improve the network capacity of the system, in the embodiment of the present invention, the control information S3 may also be sent to the cooperative base station. The power is adjusted, as shown in FIG. 8, specifically including the following steps 801 to 803:

Step 801: The serving base station sends first control information (such as control information S2) to the first terminal.

Step 802: Send the coordinated terminal related information to the cooperative base station. The coordinated terminal related information includes power when the serving base station sends control information for the first terminal, and path loss information between the first terminal and the serving base station, and a path loss between the first terminal and the cooperative base station.

Step 803: After receiving the coordinated terminal related information sent by the serving base station, the cooperative base station determines, according to the signal strength information, a difference in signal strength between the serving base station and the cooperative base station.

The cooperative base station determines the outgoing direction according to the first power when the serving base station sends the first control information S2 for the first terminal, the difference between the signal strength of the first terminal between the serving base station and the cooperative base station, and the preset power adjustment threshold. The first terminal transmits the power of the second control information S3, that is, if the power of the serving base station transmitting the control information S2 is P1, the path loss difference between the serving base station and the cooperative base station is S0 (service node path loss/collaboration) The node path loss is adjusted to: the second power P2 of the second control information S3 sent by the cooperative base station is adjusted to:

Wherein P ₁ is a first power of the first control information S2 sent by the serving base station, P ₂ is a second power of the second control information S3 sent by the cooperative base station, and PL ₁ is a path loss between the first terminal and the serving base station, PL ₂ is the path loss between the first terminal and the cooperative base station, and the path loss difference S0 between the serving terminal and the cooperative base station is PL ₁ is the path loss between the first terminal and the serving base station and the first terminal The ratio of the path loss between the cooperative base station, that is, PL ₁ /PL ₂ , THR is the preset power adjustment threshold of the cooperative base station, and the path loss values PL ₁ , PL ₂ , the first terminal are at the serving base station, and the cooperative base station The path loss difference S0 and the power values P1, P2, and THR are all linear values greater than zero.

Step 804: The cooperative base station sends the second control information to the first terminal by using the determined second power.

Step 805: The first terminal detects second control information sent by the cooperative base station.

For the foregoing method flow, the embodiment of the present invention further provides a terminal and a network device, and the specific content of the terminal and the network device may be implemented by referring to the foregoing method.

FIG. 9 is a schematic structural diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 9, the terminal 900 includes: a transceiver 901, a processor 902, a memory 903, and a bus system 904;

The memory 903 is used to store a program. In particular, the program can include program code, the program code including computer operating instructions. The memory 903 may be a random access memory (RAM) or a non-volatile memory such as at least one disk storage. Only one memory is shown in the figure, of course, the memory can also be set to a plurality as needed. Memory 903 can also be a memory in processor 902.

The memory 903 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof:

Operation instructions: include various operation instructions for implementing various operations.

Operating system: Includes a variety of system programs for implementing various basic services and handling hardware-based tasks.

The processor 902 controls the operation of the terminal 900, which may also be referred to as a CPU (Central Processing Unit). In a specific application, the various components of the terminal 900 are coupled together by a bus system 904. The bus system 904 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 904 in the figure. For ease of representation, only Figure 5 It is drawn schematically.

The method disclosed in the foregoing embodiment of the present application may be applied to the processor 902 or implemented by the processor 902. Processor 902 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 902 or an instruction in a form of software. The processor 902 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or discrete hardware. Component. 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 903, and the processor 902 reads the information in the memory 903 and executes the method steps performed by the above terminal in conjunction with its hardware.

FIG. 10 is a schematic structural diagram of a network device according to an embodiment of the present invention. As shown in FIG. 10, the network device 1000 includes: a transceiver 1001, a processor 1002, a memory 1003, and a bus system 1004.

The memory 1003 is configured to store a program. In particular, the program can include program code, the program code including computer operating instructions. The memory 1003 may be a random access memory (RAM) or a non-volatile memory, such as at least one disk storage. Only one memory is shown in the figure, of course, the memory can also be set to a plurality as needed. The memory 1003 can also be a memory in the processor 1002.

The memory 1003 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set thereof:

The processor 1002 controls the operation of the network device 1000, which may also be referred to as a CPU (Central Processing Unit). In a specific application, the components of the network device 1000 are coupled together by a bus system 1004. The bus system 1004 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 1004 in the figure. For ease of representation, only the schematic drawing is shown in FIG.

The method disclosed in the foregoing embodiment of the present application may be applied to the processor 1002 or implemented by the processor 1002. The processor 1002 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1002 or an instruction in a form of software. The processor 1002 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or discrete hardware. Component. 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 1003, and the processor 1002 reads the information in the memory 1003 and performs the method steps performed by the above network device in conjunction with its hardware.

The embodiment of the present application further provides a computer readable storage medium for storing computer software instructions required to execute the foregoing processor, which includes a program for executing the above-mentioned processor.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

A method for cooperatively receiving uplink data, characterized in that the method comprises:

Receiving, by the first network device, first uplink data sent by the first terminal;

The first network device decodes the first uplink data to obtain a first decoding result before receiving the second decoding result sent by the second network device; the first decoding result includes the And a first decoding result obtained by decoding, by the first network device, the first uplink data, and the second decoding result, where the second decoding result includes, by the second network device, the first uplink data Decoding the result indication information and the decoded second decoded data, wherein the second decoding result is obtained by the second network device decoding the received first uplink data; The second network device is a cooperative network device of the first network device;

The first network device sends, according to the result indication information in the first decoding result, the first decoded data that is decoded to the third network device, if it is determined that the first uplink data is successfully decoded. .
The method of claim 1 further comprising:

The first network device, according to the result indication information in the first decoding result, if it is determined that the decoding of the first uplink data fails, after receiving the second decoding result, according to the The result of the second decoding result indicates that if the second network device determines that the first uplink data is successfully decoded, the second decoded data is sent to the third network device;

If it is determined that the second network device fails to decode the first uplink data, the first decoded data and the second decoded data are combined and decoded, and when the merge decoding is successful, The third decoded data obtained by the combined decoding is sent to the third network device.
The method according to claim 1 or 2, wherein after the first network device receives the first uplink data sent by the first terminal, the method further includes:

The first network device sends the first response information to the first terminal according to the result indication information in the first decoding result, or after determining that the third uplink data to be sent exists in the first terminal, Transmitting, by the first terminal, the first control information, where the first response information is an ACK or a NACK, where the first control information is used to instruct the terminal to send the third uplink data;

The first network device sends the coordinated terminal information to the second network device, where the coordinated terminal information includes the power and the location when the first network device sends the first response information or the first control information. a first path loss between the first terminal and the first network device, a second path loss between the first terminal and the second network device, and the coordinated terminal information is used for the second The network device determines power when the second response information or the second control information is sent to the first terminal, where the second response information is ACK.
The method according to claim 3, wherein the first network device sends the first response information to the first terminal according to the result indication information in the first decoding result, including:

And the first network device sends, according to the result indication information in the first decoding result, the ACK to the first terminal, if it is determined that the first uplink data is successfully decoded; If the first uplink data decoding fails, the NACK is sent to the first terminal.
The method according to claim 4, wherein after the first network device sends the NACK to the first terminal, the method further includes:

Receiving, by the first network device, the first uplink data that is retransmitted by the first terminal;

Determining, by the first network device, that the first decoding result and the second decoding result are combined and decoded If the first network device fails, the first decoding data, the second decoding data, and the retransmitted first uplink data are combined and decoded.
The method according to claim 5, wherein after the first network device sends the NACK to the first terminal, the method further includes:

The first network device receives the second uplink data that is sent by the second terminal, and the time-frequency resource occupied by the second uplink data and the time-frequency resource occupied by the first uplink data at least partially overlap;

Decoding, by the first network device, the second uplink data, if the decoding fails, canceling the interference of the first uplink data on the second uplink data on the overlapping time-frequency resources, The second uplink data is decoded again.
A method for cooperatively receiving uplink data, characterized in that the method comprises:

Receiving, by the second network device, the first uplink data sent by the first terminal, and decoding the first uplink data, to obtain a second decoding result, where the second decoding result includes the second network device pair The result of the first uplink data decoding indicates information and the decoded second decoded data;

The second network device sends the second decoding result to the first network device, where the second network device is a cooperative network device of the first network device;

Transmitting, by the second network device, the second response information to the first terminal according to the result indication information in the second decoding result, or determining to decode the first uplink data, to the first The terminal sends the second control information, where the second response information is an ACK, and the second control information is used to instruct the first terminal to retransmit the first uplink data.
The method according to claim 7, wherein the second network device sends the second response information to the first terminal according to the result indication information in the second decoding result, including:

And the second network device sends, according to the result indication information in the second decoding result, the ACK to the first terminal, if it is determined that the first uplink data is successfully decoded, and determines the location When the first uplink data decoding fails, the NACK is not sent to the first terminal.
The method according to claim 7 or 8, wherein before the second network device sends the second response information or the second control information to the first terminal, the method further includes:

The second network device receives the cooperative terminal information that is sent by the first network device, where the coordinated network information includes the first network device that sends the first response information or the first control information to the first terminal. a first power loss, a first path loss between the first terminal and the first network device, and a second path loss between the first terminal and the second network device;

Determining, by the second network device, that the second network device sends the first network device to the first terminal according to the first power, the first path loss, the second path loss, and a preset power adjustment threshold The second power of the second response information or the second control information;

The sending, by the second network device, the second response information or the second control information to the first terminal includes:

The second network device sends the second response information or the second control information to the first terminal by using the second power.
A network device, where the network device includes:

a transceiver, configured to receive first uplink data sent by the first terminal;

a processor, configured to decode the first uplink data to obtain a first decoding result before receiving the second decoding result sent by the second network device, where the first decoding result includes the a network device to the first uplink The result of the data decoding indicates the information and the decoded first decoded data; the second decoding result includes the result indication information and the decoded result of the decoding, by the second network device, the first uplink data Second decoding data, the second decoding result is obtained by the second network device decoding the received first uplink data; the second network device is the first network device Collaborative network device;

The first network device sends, according to the result indication information in the first decoding result, the first decoded data that is decoded to the third network device, if it is determined that the first uplink data is successfully decoded. .
The network device according to claim 10, wherein the processor is specifically configured to:

According to the result indication information in the first decoding result, if it is determined that the decoding of the first uplink data fails, after receiving the second decoding result, according to the second decoding result The result indicating information, if it is determined that the second network device successfully decodes the first uplink data, sending the second decoded data to the third network device;

If it is determined that the second network device fails to decode the first uplink data, the first decoded data and the second decoded data are combined and decoded, and when the merge decoding is successful, The third decoded data obtained by the combined decoding is sent to the third network device.
The network device according to claim 10 or 11, wherein the transceiver is further configured to:

And sending, according to the result indication information in the first decoding result, the first response information to the first terminal, or after determining that the third uplink data to be sent in the first terminal is present, to the first terminal Transmitting the first control information, where the first response information is an ACK or a NACK, where the first control information is used to instruct the terminal to send the third uplink data;

Sending, to the second network device, the coordinated terminal information, where the coordinated terminal information includes the power when the first network device sends the first response information or the first control information, the first terminal and the Determining a first path loss between the first network device, a second path loss between the first terminal and the second network device; the cooperative terminal information is used by the second network device to determine The power when the first terminal sends the second response information or the second control information, and the second response information is ACK.
The network device according to claim 12, wherein the transceiver is specifically configured to:

Determining, according to the result indication information in the first decoding result, the ACK to the first terminal, if it is determined that the first uplink data is successfully decoded, and determining to decode the first uplink data If it fails, the NACK is sent to the first terminal.
The network device according to claim 13, wherein the transceiver is further configured to:

Receiving, by the first terminal, the first uplink data that is retransmitted by the first terminal;

The processor is further configured to:

And if the first network device determines that the first decoding data and the second decoding data are combined and failed to be decoded, the first network device, the first decoding data, the second translation The code data and the retransmitted first uplink data are combined and decoded.
The network device according to claim 14, wherein the transceiver is further configured to:

And receiving, by the second terminal, the second uplink data, where the time-frequency resource occupied by the second uplink data and the time-frequency resource occupied by the first uplink data at least partially overlap;

The processor is further configured to:

Decoding the second uplink data, if the decoding fails, canceling the interference of the first uplink data on the second uplink data on the overlapping time-frequency resources, and performing the second uplink data Decode again.
A network device, where the second network device includes:

a transceiver, configured to receive first uplink data sent by the first terminal;

a processor, configured to decode the first uplink data to obtain a second decoding result, where the second decoding result includes a result indication that the second network device decodes the first uplink data Information and decoded second decoded data;

The transceiver is further configured to send the second decoding result to the first network device, and send the second response information to the first terminal according to the result indication information in the second decoding result. Determining that the decoding of the first uplink data fails, sending second control information to the first terminal, where the second response information is an ACK; the second control information is used to indicate that the first terminal retransmits the The first uplink data is described.
The network device according to claim 16, wherein the transceiver is specifically configured to:

Determining, according to the result indication information in the second decoding result, that the ACK is sent to the first terminal, and determining to translate the first uplink data, if it is determined that the first uplink data is successfully decoded. In the case where the code fails, no NACK is sent to the first terminal.
The network device according to claim 16, wherein the transceiver is further configured to:

And if it is determined that the decoding of the first uplink data fails, the second control information is sent to the first terminal, where the second control information is used, according to the result indication information in the second decoding result. Instructing the first terminal to retransmit the first uplink data.
The network device according to any one of claims 16 to 18, wherein the transceiver is further configured to:

Receiving the cooperative terminal information sent by the first network device; the coordinated terminal information includes a first power when the first network device sends the first response information or the first control information to the first terminal, and the a first path loss between the first terminal and the first network device, and a second path loss between the first terminal and the second network device;

The processor is further configured to:

Determining, according to the first power, the first path loss, the second path loss, and a preset power adjustment threshold, that the second network device sends the second response information to the first terminal Or the second power when the second control information is;

The transceiver is also used to:

And transmitting, by the second power, the second response information or the second control information to the first terminal.