CN110971375B

CN110971375B - Communication method and device

Info

Publication number: CN110971375B
Application number: CN201811161790.6A
Authority: CN
Inventors: 金黄平; 毕晓艳; 张瑞齐; 尚鹏
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2021-06-15
Anticipated expiration: 2038-09-30
Also published as: CN110971375A; WO2020063990A1

Abstract

The method comprises the steps that network equipment generates and sends a first message to a terminal, wherein the first message indicates a limited sending port, so that the network equipment can indicate the limited port to the terminal, and the terminal knows that the port of the network equipment has transmission limitation.

Description

Communication method and device

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a communication method and apparatus.

Background

In order to improve the communication performance of the mobile communication system, a base station in the current mobile communication system can support multi-port (port) transmission, and a terminal can perform channel estimation on the multi-port according to a reference signal sent by the base station.

In practical use, the ports of the base station may be limited in transmission due to various factors, for example, the antennas of the base station may be physically damaged, which may result in limited transmission of a part of the ports of the base station, loss of communication performance, and deviation of signal processing at the terminal.

Disclosure of Invention

The application provides a communication method and a communication device, which are used for solving the existing technical problem.

In a first aspect, an embodiment of the present application provides a communication method, which may be implemented by a network device, and the method may include the network device generating a first message and transmitting the first message to a terminal, where the first message indicates a restricted transmission port of the network device.

By adopting the communication method, the network equipment can indicate the limited sending port to the terminal, so that the terminal can know that the port in the network equipment is limited in transmission.

In one possible implementation, the restricted transmit port belongs to a port set of the first reference signal. In an implementation, the first reference signal may include a CSI-RS, such that a restricted port among CSI-RS ports may be indicated in resource configuration information of the CSI-RS configured for CSI reporting.

In one possible implementation, the first message may be further used to indicate whether each of the sending ports in the port set is a restricted sending port, or the first message may be further used to indicate whether each of the sending ports in the port set is an unrestricted sending port.

In one possible implementation manner, the first message is contained in CSI-RS resource configuration information in a CSI-RS resource set resource; or, the first message is contained in the configuration information of the CSI-RS resource set; or, the first message is contained in the CSI resource configuration setting information; or, the first message is included in CSI reporting configuration setting information. One or more restricted transmission ports in each CSI-RS port set may thus be indicated by the first message on demand.

In one possible implementation, the port set of the first reference signal includes one or more restricted transmission ports, where, if one or more restricted transmission ports, of the restricted transmission ports, occupied time-frequency resources with non-restricted transmission ports in the port set do not intersect in time domain and frequency domain, their time-frequency resources can be configured as transmission resources of the data or the second reference signal. In addition, if one or more of the restricted transmitting ports have an intersection with the time-frequency resources occupied by the non-restricted transmitting ports in the port set in the time domain and the frequency domain, the time-frequency resources of the one or more restricted transmitting ports cannot be configured as transmission resources of data or the second reference signal.

In a possible implementation manner, the port set of the first reference signal includes a code division multiplexing CDM port group, where, if all ports in the CDM port group are restricted sending ports, time-frequency resources occupied by the CDM port group can be configured as transmission resources of data or the second reference signal, so that time-frequency resources occupied by CDM port groups whose all ports are restricted sending ports can be configured as transmission resources of data or other reference signals, so as to save time-frequency resources; in addition, if the CDM port group includes one or more non-restricted transmission ports, the time-frequency resources occupied by the CDM port group cannot be configured as transmission resources of data or the second reference signal, so that interference on transmission of the non-restricted transmission ports in the CDM port group can be avoided.

The embodiment of the application provides a communication method, which can be implemented by a terminal and comprises the following steps: the terminal equipment receives a first message sent by the network equipment, and the terminal equipment determines at least one limited sending port in the network equipment according to the first message.

By adopting the method, the terminal equipment can determine the port with the transmission limitation of the network equipment according to the first message sent by the network equipment, so that the transmission limitation condition of the port in the network equipment can be known.

In a possible implementation manner, the terminal may assume that the transmission power of the restricted transmission port is zero, so that when the terminal determines the CSI according to the CSI-RS transmitted by the network device, it may avoid that the port dimension of the codebook configured by the base station is inconsistent with the dimension of the actually transmitted CSI-RS pilot port, which may cause mismatching between the reported PMI or CQI and actual transmission.

In a second aspect, an embodiment of the present application further provides a communication apparatus, which may be a network device and may include a processing module and a communication module, and the communication apparatus performs corresponding functions performed by the network device in any possible design of the first aspect and the first aspect.

In one possible design, the processing module may be to generate a first message indicating the restricted send port; the communication module may be configured to send a first message.

In a third aspect, an embodiment of the present application further provides a communication apparatus, which may be a terminal or an apparatus in a terminal, and the communication apparatus may include a processing module and a communication module, and is configured to execute corresponding functions executed by the terminal in any possible design of the first aspect and the first aspect.

In one possible design, the communication module may be to receive a first message sent by the network device, the first message indicating at least one restricted sending port of the network device; the processing module may be operative to determine at least one restricted transmit port of the network device based on the first message.

In one possible design, the processing module may be further configured to assume that the transmit power of the restricted transmit port is zero.

In a fourth aspect, the present application further provides a communication apparatus, which may be a network device or an apparatus in a network device, where the communication apparatus may include a processor and a communication interface, and the communication apparatus is configured to perform corresponding functions performed by the network device in any one of the above-mentioned first aspect and possible designs of the first aspect. The communication device may also include a memory for storing program instructions and data. The memory is coupled to the processor, and the processor may call and execute the program instructions stored in the memory to implement the functions of the network device in the method described in any of the design examples of the first aspect and the first aspect. The communication interface is used for communicating with other equipment in the communication device, and is exemplarily a transceiver. Illustratively, the other device is a terminal.

In one possible design, the processor may be configured to generate a first message indicating a restricted send port; the communication interface may be operable to transmit a first message.

In a fifth aspect, the present application further provides a communication apparatus, which may be a terminal or an apparatus in a terminal, and the communication apparatus may include a processor and a communication interface, and is configured to perform corresponding functions performed by the network device in any possible design of the first aspect and the first aspect. The communication device may also include a memory for storing program instructions and data. The memory is coupled to the processor, and the processor may call and execute the program instructions stored in the memory to implement the functions of the terminal in the method described in any of the design examples of the first aspect and the first aspect. The communication interface is used for communicating with other equipment in the communication device, and is exemplarily a transceiver. Illustratively, the other device is a network device, such as a base station.

In one possible design, the communication interface may be to receive a first message sent by the network device, the first message indicating at least one restricted send port of the network device; the processor may be configured to determine at least one restricted transmission port of the network device based on the first message.

In one possible design, the processor may be further configured to assume that the transmit power of the restricted transmit port is zero.

In a sixth aspect, an embodiment of the present application further provides a computer-readable storage medium, which includes instructions, when the instructions are executed on a computer, causing the computer to perform the functions of the network device in the method described in any one of the design examples of the first aspect and the first aspect.

In a seventh aspect, an embodiment of the present application further provides a computer-readable storage medium, which includes instructions, when the instructions are executed on a computer, causing the computer to perform the functions of the terminal in the method described in any of the design examples of the first aspect and the first aspect.

In an eighth aspect, an embodiment of the present application provides a computer program product containing instructions, which when run on a computer, causes the computer to perform the functions of the network device in the method described in any of the design examples of the first aspect and the first aspect.

In a ninth aspect, the present application provides a computer program product containing instructions, which when run on a computer, causes the computer to perform the functions of the terminal in the method described in any of the design examples of the first aspect and the first aspect.

In a tenth aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor and may further include a memory, and is configured to implement the function of the network device in the method described in any of the design examples of the first aspect and the first aspect. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

In an eleventh aspect, an embodiment of the present application provides a chip system, where the chip system includes a processor and may further include a memory, and is configured to implement a function of a terminal in the method described in any of the design examples of the first aspect and the first aspect. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

In a twelfth aspect, an embodiment of the present application provides a communication system, where the communication system includes the communication apparatus in the second aspect or the fourth aspect and the communication apparatus in the third aspect or the fifth aspect.

Drawings

Fig. 1 is a schematic architecture diagram of a wireless communication system according to an embodiment of the present application;

fig. 2 is a schematic diagram of an NR scenario according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a UE according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 5 is a flowchart illustrating a communication method according to an embodiment of the present application;

FIG. 6 is a diagram illustrating a restricted transmission port according to an embodiment of the present disclosure;

FIG. 7 is a diagram illustrating a restricted transmission port according to an embodiment of the present disclosure;

fig. 8 is a schematic resource location diagram of a time-frequency resource occupied by a restricted sending port according to an embodiment of the present application;

FIG. 9 is a diagram illustrating a restricted transmit port according to an embodiment of the present disclosure;

fig. 10 is a schematic resource location diagram of a time-frequency resource occupied by a restricted sending port according to an embodiment of the present application;

FIG. 11 is a diagram illustrating a restricted transmit port according to an embodiment of the present application;

fig. 12 is a schematic resource location diagram of a time-frequency resource occupied by a restricted sending port according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.

The following explains the words that the present application relates to or may relate to:

1. at least one means one, or more than one, i.e., including one, two, three, and more than one.

2. Carrying may mean that a certain message is used to carry certain information or data, or that a certain message is composed of certain information.

The following describes embodiments of the present invention in detail with reference to the accompanying drawings. First, a mobile communication system provided in the embodiment of the present application is introduced, then a terminal and a base station provided in the embodiment of the present application are introduced, and finally a specific implementation manner of a communication method provided in the embodiment of the present application is introduced.

As shown in fig. 1, a wireless communication system 100 provided by the embodiment of the present application may include a UE101 and a network device 102. The application scenarios of the wireless communication System 100 provided in the embodiment of the present invention include, but are not limited to, a Global System for Mobile communication (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (Frequency Division Duplex, FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile telecommunications System (Universal Mobile telecommunications System, UMTS), a Worldwide Interoperability for Microwave Access (world Interoperability for Microwave communication (UMTS), a future fifth Generation (5, 5) wireless communication System, or a New NR (Radio network) System.

Illustratively, the UE101 can be a terminal (terminal), a Mobile Station (MS), a mobile terminal (mobile terminal), etc., and the UE101 can communicate with one or more network devices of one or more communication systems and can accept network services provided by the network devices, including but not limited to the illustrated network device 102. By way of example, the UE101 in the embodiments of the present application may be a mobile telephone (or "cellular" telephone), a computer with a mobile terminal, etc., and the UE101 may also be a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device. The UE101 may also be a communication chip having a communication module.

The network device 102 may include a Base Station (BS), or include a base station and a radio resource management device for controlling the base station, and the network device 102 may be a relay station (relay device), an access point, an in-vehicle device, a wearable device, and a base station in a future 5G network or a base station in a future evolved Public Land Mobile Network (PLMN) network, for example, a new air interface base station, and the embodiment of the present disclosure is not limited.

It should be understood that the above-described wireless communication system 100 may be applied to an NR scenario, as shown in fig. 2, an exemplary NR scenario may include an NR core network 201, and the NR scenario may further include a new air interface access network 202, where the NR core network 201 and the new air interface access network 202 implement interaction through an interface. In the NR scenario, the functional entities for implementing the communication method according to the embodiment of the present application may be a base station and a terminal. Specifically, the UE101 according to the embodiment of the present application may include a UE connected to a base station connected to a new air interface access network 202, for example, the UE 203 shown in fig. 2, where the UE 203 is connected to an access network base station 204 through a wireless link, and the access network base station 204 may be a base station in the new air interface access network 202; the UE101 according to the embodiment of the present application may further include a UE connected to a relay, for example, the UE 205 shown in fig. 2, where the UE 205 is connected to the relay 206, and the relay 206 is connected to the access network base station 204 through a relay link. The network device 102 according to the embodiment of the present application may be an access network base station 204 in a new air interface access network 202 shown in fig. 2, or may be a relay station 206 connected to the access network base station 204 shown in fig. 2.

For example, a UE101 provided in the embodiment of the present application may have a structure as shown in fig. 3, and according to fig. 3, the UE101 may include a processor 301, a transceiver 302, and an antenna 303. The processor 301 may be configured to implement the steps involved in the UE101 in the method provided by the embodiment of the present application by the UE101, for example, the processor 301 may be configured to determine a restricted transmission port by the UE 101; the transceiver 302 can be coupled to the antenna 303 for supporting interaction with the UE101, e.g., can be used for the UE101 to receive a first message sent by the network device 102. Illustratively, the UE101 may further include a memory 304, in which computer programs, instructions are stored, and the memory 304 may be coupled with the processor 301 and/or the transceiver 302, for enabling the processor 301 to call the computer programs, instructions in the memory 304 to implement the steps involved by the UE101 in the method provided by the embodiments of the present application; in addition, the memory 304 may also be used for storing data related to embodiments of the method of the present application, for example, for storing data, instructions necessary to support the transceiver 302 to implement the interaction, and/or for storing configuration information necessary for the UE101 to perform the method of the embodiments of the present application. The memory 304 may be separate from the processor 301 or integrated therewith.

Illustratively, the network device 102 provided in the embodiments of the present application may have a structure as shown in fig. 4. According to fig. 4, the network device 102 may include a processor 401, a transceiver 402, and an antenna 403. The processor 401 may be configured to enable the network device 102 to implement the steps involved in the network device 102 in the method provided in the embodiment of the present application, for example, may be configured to enable the network device 102 to generate a first message; the transceiver 402 may be coupled with an antenna 403 for supporting interaction by the network device 102, e.g., may be used for the network device 102 to send a first message to the UE 101. Illustratively, the network device 102 may also include other interfaces 404 for enabling the network device 102 to interact via wires, for example, the other interfaces 404 may be fiber optic link interfaces, ethernet interfaces, copper wire interfaces, and the like. Illustratively, the network device 102 may further include a memory 405, in which computer programs and instructions may be stored, the memory 405 may be coupled with the processor 401, the transceiver 402 and the other interface 404, and is used for supporting the processor 401 to call the computer programs and instructions in the memory 403 to implement the steps involved in the network device 102 in the method provided by the embodiment of the present application; in addition, the memory 405 may also be used for storing data related to embodiments of the methods of the present application, for example, for storing data and instructions necessary to enable the transceiver 402 and/or other interfaces 404 to interact. The memory 405 may be separate from the processor 401 or integrated therewith.

In the following, referring to fig. 5, a wireless communication system 100 shown in fig. 1 is taken as an example to describe a communication method provided in an embodiment of the present application, where the method includes the following steps:

step S101: the network device 102 generates a first message indicating at least one restricted transmit port in the network device 102;

step S102: network device 102 sends a first message;

step S103: the UE101 receives a first message sent by the network equipment 102;

step S104: the UE101 determines at least one restricted transmit port of the network device 102 based on the first message.

With the above approach, the network device 102 may indicate the restricted transmit port to the UE 101. The restricted transmission port may be a transmission port detected by the network device 102 and damaged, or a port determined by the network device 102 and restricted for transmission.

The first message according to the embodiment of the present application may be any one of a Radio Resource Control (RRC) message, a media access control-control element (MAC-CE) message, a Downlink Control Information (DCI) message, or another message that implements the indication function. In implementations, the first message may carry information indicating at least one restricted transmit port in the network device 102.

It should be understood that the ports referred to in the embodiments of the present application, which may also be referred to as antenna ports (antenna ports), refer to the number of ports that the UE101 resolves for channel estimation. The ports can be divided into a transmitting port for transmitting signals and a receiving port for receiving signals.

The restricted transmission port according to the embodiment of the present application belongs to a port set of a reference signal. Specifically, the reference signal may be a channel state information-reference signals (CSI-RS), where the network side device 102 may configure configuration information of the CSI-RS sent to the UE101, where the configuration information may include sending port information, such as a port number, and a set of the sending ports is a port set of the CSI-RS.

In an implementation, the Channel State Information (CSI) may include some or all of the following parameters: a Precoding Matrix Indicator (PMI), a Rank Indicator (RI), a maximum stream indicator (SLI or LI), or a Channel Quality Indicator (CQI). The UE101 may perform channel measurement on the ports in the port set according to the configuration information of the CSI-RS, and feed back channel state information to the network device 102.

In the implementation of the step shown in S101, the restricted transmission port indicated by the first message belongs to the port set of the first reference signal. It should be understood that the first reference signal herein may include a CSI-RS.

Next, a manner in which the first message indicates a restricted transmission port will be described, taking the first reference signal as CSI-RS as an example.

Mode one, the first message indicates whether each transmit port in the port set is a restricted transmit port.

In an implementation, the network device 102 may carry a character string in the first message to indicate whether each transmission port in the port set is a restricted transmission port, where the length of the character string may be the same as the number of transmission ports in the port set, and a value corresponding to the restricted transmission port in the character string is a predetermined value, such as 0, or 1, and after receiving the first message, the UE101 may determine that the transmission port with the predetermined value is the restricted transmission port.

Specifically, the network device 102 may carry a bitmap (bitmap) in the first message, which is used to indicate whether each sending port is a restricted sending port. For example, as shown in fig. 6, the port set of the CSI-RS configured by the network device 102 to the UE101 is 16 transmission ports corresponding to numbers 0 to 15, wherein if the network device 102 determines that the ports corresponding to numbers 2, 5, and 15 are limited transmission ports, assuming that the value of the bit corresponding to the limited transmission ports is 0, the network device 102 may carry the following character strings in the first message: 1101101111111110, where n is a one-to-one correspondence between the port numbered n and the nth bit in the character string, and n is an integer between 0 and 15, after receiving the character string, the UE101 may use the port corresponding to the bit with a value of 0 as the restricted sending port, and it should be understood that the value 1 in the character string may be replaced by other non-1 values; as another example, assuming that the value of the bit corresponding to the restricted sending port is 1, the network device 102 may carry the following information in the first message: 0010010000000001, where n is an integer between the port numbered n and the nth bit in the string, and n is an integer between 0 and 15, after receiving the string, the UE101 may use the port corresponding to the bit with a value of 1 as the restricted sending port, and it should be understood that the value 0 in the string may be replaced by other non-0 values.

In the second mode, the first message indicates whether each sending port in the port set is an unrestricted sending port.

In an implementation, the network device 102 may further carry a character string in the first message, where the character string is used to indicate whether each sending port in the port set is an unrestricted sending port, where a length of the character string may be the same as the number of sending ports in the port set, and a value corresponding to a restricted sending port in the character string is a predetermined value, such as 0, or 1, after the UE101 receives the first message, it may be determined that the sending port with the predetermined value is an unrestricted sending port, and then other ports in the port set are restricted sending ports. The manner in which the network device 102 indicates whether each sending port in the port set is an unrestricted sending port may refer to the manner in which the first message indicates whether each port in the port set is a restricted sending port, and is not described herein again.

Mode three, the first message indicates the location of the restricted port in the port set.

In an embodiment, the network device 102 may also send a first message to the UE101 indicating the number M of restricted ports and the location of the restricted ports among all ports N. The signaling for indicating the number of the restricted ports and the signaling for indicating the positions of the restricted ports in all the ports can be coded jointly or independently. If the two signals are encoded independently, the two signals correspond to two independent bit fields (fields). If two signals are jointly coded, the two signals appear as one field.

Taking two signaling independent codes as an example, the signaling sent by the network device 102 is the concatenation of the bit fields of the two signaling, and the signaling bit length

The bit indicates the number of restricted ports,

the bit indicates the location of the restricted port number among all ports.

Wherein,

represents the number of all combinations of m numbers selected from the n numbers! Indicating a factorial operation.

In one possible implementation, the network device 102 may include the first message in configuration information of the CSI-RS resource. Specifically, the first message may be included in CSI-RS resource configuration information in a CSI-RS resource set (resource set) for indicating a restricted transmission port in the port set of the CSI-RS.

The first message may also be included in configuration information of a CSI-RS resource set, which may include a plurality of CSI-RSs, so that the first message may be used to indicate a restricted transmission port in each or a partial set of ports of CSI-RSs included in the CSI-RS set.

The first message may also be included in CSI resource configuration (resource setting) information, which may include a plurality of CSI-RS sets, so that the first message may be used to indicate a restricted transmission port in a port set of each or a part of CSI-RS included in the plurality of CSI-RS sets.

The first message may also be included in CSI reporting configuration (reporting setting) information, and the CSI reporting setting may be linked to the multiple CSI resource setting, so that the first message may be used to indicate a restricted sending port in each of the multiple CSI resource setting or a port set of the partial CSI-RS.

In this way, the network device 102 may implement the indication of the restricted transmission ports at different levels, for example, the indication of the restricted ports in the CSI-RS port sets may be implemented through the first message, so as to save signaling overhead.

In a possible implementation manner, in one or more restricted sending ports included in the port set of the first reference signal, if the time-frequency resources occupied by the one or more restricted sending ports and the non-restricted sending ports in the port set do not intersect in the time domain and the frequency domain, the time-frequency resources occupied by the one or more restricted sending ports can also be configured as transmission resources of data or the second reference signal, so that the time-frequency resources originally used for sending the first reference signal in the port set are used for transmission of the data or other reference signals, and waste of the time-frequency resources caused by the restricted sending ports is avoided. The second reference signal is a reference signal other than the first reference signal, and the type of the second reference signal is not limited in the present application, and may be a reference signal other than a CSI-RS sent by the network device 102, for example, the second reference signal may be a downlink demodulation reference signal (DMRS) sent by the network device 102 to the UE101 or another UE, or may be a CSI-RS different from the first reference signal sent by the network device 102 to the UE 101.

It should be understood that the time-frequency resources occupied by the one or more restricted transmission ports may be configured as transmission resources for data or the second reference signal by the network device 102, wherein the network device 102 may perform the step before or after the step shown in S101.

Specifically, if the port set of the first reference signal includes a Code Division Multiplexing (CDM) port group (where the transmission ports in the CDM port group transmit in a CDM manner), in the CDM port group, if all the ports are restricted transmission ports, the time-frequency resources occupied by the CDM port group can be configured as transmission resources of data or the second reference signal, so that when all the transmission ports in the CDM port group are restricted ports, the waste of the time-frequency resources occupied by the CDM port group is avoided; on the contrary, if the CDM port group includes one or more non-restricted transmission ports, the time-frequency resources occupied by the CDM port group cannot be configured as transmission resources of data or the second reference signal, so as to avoid interference to the transmission of the non-restricted transmission ports.

Taking fig. 7 as an example, a port 1, a port 2, a port 3, and a port 4 are a CDM port group in a port set of a first reference signal, where time-frequency resources occupied by the ports 1 to 4 in one Resource Block (RB) are shown as resource positions 801 in fig. 8, and if the network device 102 determines that all transmission ports in one CDM port group are restricted transmission ports, the network device 102 may configure the time-frequency resources occupied by the CDM port group shown as the resource positions 801 as transmission resources of data or other reference signals.

Specifically, when configuring the time-frequency resources occupied by all the transmission ports in the CDM port group as transmission resources of data or other reference signals, the network device 102 may include the time-frequency resources occupied by the ports 1 to 4 in resource position indications of other reference signals except the first reference signal; the network device 102 may also include the time-frequency resource in a resource location indication of the data.

In an implementation, if the network device 102 configures time-frequency resources occupied by all the transmission ports in the CDM port group as transmission resources of data or other reference signals, the network device 102 should avoid the time-frequency resources from being punctured, for example, when the network device 102 performs puncturing according to rate matching (rate matching) indication signaling, the puncturing operation should be avoided at the resource location 801 shown in fig. 8.

As shown in fig. 9, a first CDM port group in the port set of the first reference signal is composed of port 3 and port 4, and a second CDM port group in the port set is composed of port 1 and port 2, when time division-code division multiplexing (TD-CDM) transmission is performed, time-frequency resources occupied by port 1 and port 2 in one RB are shown as resource location 1001 in fig. 10, and time-frequency resources occupied by port 3 and port 4 in one RB are shown as resource location 1002. If it is determined that port 3 and port 4 in the first CDM port group are both restricted transmit ports, network device 102 may configure the time-frequency resources as shown by resource location 1002 as transmission resources for data or other reference signals. The specific allocation manner of the time frequency resource shown in the resource position 1002 may refer to the allocation manner of the time frequency resource occupied by the CDM port group shown in the resource position 801, which is not described herein again.

As shown in fig. 11, a first CDM port group in the port set of the first reference signal is composed of port 1 and port 2, and a second CDM port group in the port set is composed of port 3 and port 4, when performing frequency division-code division multiplexing (FD-CDM) transmission, time-frequency resources occupied by port 1 and port 2 in one RB are shown as resource location 1201 in fig. 12, and time-frequency resources occupied by port 3 and port 4 in one RB are shown as resource location 1202. If it is determined that port 3 and port 4 in the second CDM port group are both restricted transmit ports, network device 102 may configure the time-frequency resources as shown in resource location 1202 as transmission resources for data or other reference signals. The specific allocation manner of the time frequency resource shown in the resource position 1202 can refer to the allocation manner of the time frequency resource occupied by the CDM port group shown in the resource position 801, which is not described herein again.

It should be understood that, in the one or more restricted sending ports included in the port set of the first reference signal, if the time-frequency resources occupied by the one or more restricted sending ports and the non-restricted sending ports in the port set intersect in the time domain and the frequency domain, the time-frequency resources occupied by the one or more restricted sending ports cannot be configured as transmission resources of the data or the second reference signal, so as to prevent transmission interference from being generated for the non-restricted sending ports that intersect in the time domain and the frequency domain when the time-frequency resources are used for transmission of the data or the second reference signal.

The UE101, upon determining the at least one restricted transmit port of the network device 102, may assume that the transmit power of the restricted transmit port is zero. Specifically, the UE101 may calculate the CSI, such as PMI and/or CQI, that needs to be reported to the network device 102 according to an assumption that the transmission power of the restricted transmission port in the port set of the CSI-RS is zero. Since the network device 102 configures a plurality of CSI-RS ports to the UE101, when a limited transmission port occurs in the plurality of CSI-RS ports, the number of ports actually measured by the UE101 does not match the number of CSI-RS ports configured by the network device 102, and at this time, an error occurs or when the UE101 calculates the PMI and the CQI. By adopting the above manner, the UE101 may assume that the transmission power of the restricted transmission port is zero in the channel measurement process, so as to avoid channel state information determination errors caused by the fact that the actually measured port number does not coincide with the CSI-RS port number configured by the network device 102.

Taking fig. 7 as an example, assuming that the port 1 to the port 8 are CSI-RS ports configured by the network device 102 for the UE101, and the network device 102 indicates, to the UE101 through a first message, that the port 1 to the port 4 are restricted transmission ports, when the UE101 performs CSI calculation, it is assumed that the transmission power of the port 1, the port 2, the port 3, and the port 4 is zero, and on this basis, the PMI or CQI of the port 1 to the port 8 is calculated, and then the PMI or CQI is transmitted to the network device 102.

For example, assuming that the number of CSI-RS ports is 8, the first message sent by the network device 102 indicates that the ports 7-8 are restricted ports. After the UE101 receives the signaling, the limited port is analyzed to be the port 7-8, the transmitting power of the port 7-8 is assumed to be 0, and the UE101 only detects the time-frequency resource position where the port 1-6 is located to perform channel estimation to obtain a channel estimation vector

Among them, h1, h2, h3, h4, h5 and h6 correspond to ports 1 to 6, respectively, and the UE101 performs PMI search and CQI calculation using the channel vectors. Since the PMI reporting requires reporting the PMI according to a codebook configured by the network device 102 to indicate the precoding desired by the UE 101. The dimension of the codebook configuration is generally consistent with the CSI-RS pilot dimension. That is, the codebook configured to the UE101 by the network device 102 is an 8-port codebook, and the UE101 selects the PMI from the 8-port codebook.

In the following, the indication manner of the restricted port in the embodiment of the present application is exemplified.

The reference signal sent by the network device 102 to the UE101 includes a first reference signal and a second reference signal, where the number of the transmission port in the port set of the first reference signal is 1-8, and the number of the transmission port in the port set of the second reference signal is 1-8. If the network device 102 determines that the restricted transmission port in the port set of the first reference signal is port 7-8 and the restricted transmission port in the port set of the second reference signal is port 7-8, the network device 102 may indicate to the UE101 that the ports 7-8 of the first reference signal and the second reference signal are the restricted transmission ports through the same first message.

In the above example, the network device 102 may further configure time-frequency resources occupied by the ports 7-8 in the first reference signal as transmission resources of data or other reference signals (including but not limited to the second reference signal). Specifically, the time-frequency resources allocated by the network device 102 to the ports 7-8 of the first reference signal may coincide with the time-frequency resources of the ports 1-2 (i.e., non-restricted ports) of the second reference signal, i.e., frequency-frequency resource multiplexing, so that when the ports 7-8 of the first reference signal are restricted, the ports 1-2 of the second reference signal may transmit the second reference signal on the time-frequency resources coinciding with the time-frequency resources occupied by the ports 7-8 of the first reference signal.

Along the above example, the UE101 may determine, according to the first message, that the limited transmission port in the port set of the first reference signal is the port 7-8, and if the first reference signal is the CSI-RS, the UE101 may only detect the time-frequency resource location occupied by the ports 1-6 of the first reference signal when performing channel measurement, and assume that the transmission power of the port at the time-frequency resource location where the ports 7-8 are located is 0, so as to perform channel estimation according to the time-frequency resource location occupied by the ports 1-6 of the first reference signal.

In one possible approach, the number of transmit ports in the port set of the first reference signal configured by the network device 102 may be greater than the number of actual transmit ports of the network device 102, wherein the ports of the first reference signal that are greater than the actual transmit ports may be configured as restricted ports. Specifically, if the number of currently actual transmission ports of the network device 102 is 6, the network device 102 may configure a CSI-RS including 8 ports to the UE101, and indicate two CSI-RS ports of the CSI-RS ports to the UE101 through a first message, so that the UE101 may perform 8-port CQI measurement according to the CSI-RS, and determine a PMI and/or a CQI, where the UE101 assumes that the transmission power of the restricted transmission ports is zero when determining the PMI and/or the CQI.

The method provided by the embodiment of the application is introduced above. In order to implement the functions in the method provided by the embodiments of the present application, the UE101 or the network device 102 may include a hardware structure and/or a software module, and the functions are implemented in the form of a hardware structure, a software module, or a hardware structure and a software module. Whether any of the above-described functions is implemented as a hardware structure, a software module, or a hardware structure plus a software module depends upon the particular application and design constraints imposed on the technical solution.

As shown in fig. 13, a communication apparatus 1300 provided in this embodiment of the present application includes a processing module 1301 and a communication module 1302, where the communication apparatus 1300 may be configured to implement each step executed by the UE101 in the foregoing method embodiment, and may also be configured to implement each step executed by the network device 102 in the foregoing method embodiment.

In particular, in implementing the steps performed by network device 102, processing module 1301 may be configured to generate a first message, where the first message indicates the restricted sending port; the communication module 1302 may be configured to send a first message.

In carrying out the steps performed by the UE101, the communication module 1302 is operable to receive a first message sent by the network device 102; processing module 1301 may be configured to determine at least one restricted transmission port of network device 102 based on the first message.

In one possible implementation, the processing module 1301 can be further configured to assume that the transmission power of the restricted transmission port is zero, for example, when calculating the PMI/CQI, the processing module 1301 assumes that the transmission power of the restricted transmission port is zero.

It should be noted that the division of each module is only a division of a logic function, and all or part of the actual implementation may be integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in a mode of calling by the processing element through software, and part of the modules can be realized in a mode of hardware. The communication module 1302 can be further divided into a receiving module for implementing a receiving function and a sending module for implementing a sending function, and the communication module 1302 and the processing module 1301 can be integrated together or can be implemented independently. The processing module 1301 may be an integrated circuit having signal processing capability and may be used to generate messages or perform certain operations.

In implementation, each processing step performed by the processing module 1301 can be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software. Further, the communication module 1302 may include a unit for controlling transmission, and may be used for implementing transmission or reception through a transmission device, such as an antenna and a radio frequency device.

It should be understood that the above logical architecture of the communication apparatus 1300 can be implemented by the UE101 shown in fig. 3, for example, the processor 301 in the UE101 shown in fig. 3 can implement the function of the processing module 1301, and the transceiver 302 and the antenna 303 in the UE101 can implement the function of the communication module 1302, so that the UE communication apparatus 1300 shown in the embodiment of the present application can be implemented by the UE101 having the structure shown in fig. 3.

The logical architecture shown in the communication apparatus 1300 may be implemented by the network device 102 shown in fig. 4, for example, the processor 401 in the network device 102 shown in fig. 4 may implement the function of the processing module 1301, and the transceiver 402 and the antenna 403 in the network device 102 may implement the function of the communication module 1302, so that the network device 102 having the structure shown in fig. 4 may implement the functions of the communication apparatus 1300 shown in the embodiment of the present application.

Based on the same technical concept, the embodiment of the present application further provides another communication apparatus, which is used for implementing the functions of the UE101 or the network device 102 in the foregoing method embodiments. The communication device may be implemented by a chip system, for example, the communication device may be formed by a chip or a chip and other discrete devices.

As shown in fig. 14, communications device 1400 includes a communications interface 1410 and at least one processor 1420. The communication interface 1410 may be used for the communication apparatus 1400 to provide transmission media to communicate with other devices, and may be a circuit, a device, an interface, a bus, a software module, a transceiver, or any other apparatus capable of implementing communication; the processor 1420 is operable to implement or support the communications apparatus 1400 to implement the functionality of the UE101 or the network device 102 in the methods provided by the embodiments of the present application.

Illustratively, processor 1420 may be used to implement the functionality of processing module 1301 in communications apparatus 1300, and communications interface 1410 may be used to implement the functionality of communications module 1302 in communications apparatus 1300.

In particular, when communications apparatus 1400 implements steps performed by network device 102, processor 1420 may be configured to generate a first message and/or to support other processes described herein as being involved in network device 102, and communication interface 1410 may be configured to transmit the first message and/or to support other communications processes described herein as being involved in network device 102.

In implementing the steps performed by the UE101 at the communications apparatus 1400, the communication interface 1410 may be configured to receive a first message transmitted by the network device 102, and the processor 1420 may be configured to determine at least one restricted transmit port of the network device 102 based on the first message, and/or to support other processes involved by the UE101 in the techniques described herein, e.g., the processor 1420 may be further configured to assume that the transmit power of the restricted transmit port is zero, e.g., assume that the transmit power of the restricted transmit port is zero when calculating the PMI/CQI, and/or to support other communications processes involved by the UE101 in the techniques described herein.

The communications apparatus 1400 can also include at least one memory 1430 for storing program instructions and/or data. A memory 1430 is coupled to the processor 1420. The coupling in the embodiments of the present application refers to indirect coupling or communication connection between devices, units or modules, which may be in an electrical, mechanical or other form, and is used for information interaction between the devices, units or modules. The processor 1420 may operate in conjunction with the memory 1430. Processor 1420 may execute program instructions stored in memory 1430. At least one memory 1430 of the at least one memory 1430 may be included in the processor 1420.

The specific connection medium between the communication interface 1410, the processor 1420 and the memory 1430 is not limited in this embodiment. In fig. 14, the memory 1430, the processor 1420 and the communication interface 1410 are connected by a bus 1440, the bus is shown by a thick line in fig. 14, and the connection manner between other components is only for illustrative purposes and is not limited thereto. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 14, but this is not intended to represent only one bus or type of bus.

It is to be appreciated that the above architecture of the communications apparatus 1400 can be implemented by the UE101 as illustrated in FIG. 3, for example, the functions of the processor 1420 by the processor 301 in the UE101, the functions of the memory 1430 by the memory 304 in the UE101, and the functions of the communication interface 1410 by the transceiver 302, antenna 303 in the UE 101. In addition, the architecture shown by the above communication apparatus 1400 may be implemented by the network device 102 as shown in fig. 4, for example, the functions of the processor 1420 may be implemented by the processor 401 in the network device 102, the functions of the memory 1430 may be implemented by the memory 405 in the network device 102, and the functions of the communication module 402 may be implemented by the transceiver 402 and the antenna 403 in the network device 102.

In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

It should be understood that the memory referred to in the embodiments of the present application may be a nonvolatile memory, such as a Hard Disk Drive (HDD) or a solid-state drive (SSD), and may also be a volatile memory, such as a random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in the embodiments of the present application may also be circuitry or any other device capable of performing a storage function for storing program instructions and/or data.

Also provided in embodiments herein is a computer-readable storage medium comprising instructions that, when executed on a computer, cause the computer to perform the method in embodiments herein.

Also provided in embodiments herein is a computer program product comprising instructions which, when executed on a computer, cause the computer to perform the method in embodiments herein.

The embodiment of the present application provides a chip system, which includes a processor and may further include a memory, and is used to implement the method in the embodiment of the present application. The chip system may be formed by a chip, and may also include a chip and other discrete devices.

An embodiment of the present application provides a communication system, where the communication system includes the foregoing network device and the foregoing terminal device.

The method provided by the embodiment of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network appliance, a user device, or other programmable apparatus. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., an SSD), among others.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method of communication, comprising:

a network device generates a first message indicating a restricted transmission port belonging to a port set of a first reference signal, the first reference signal comprising a channel state information reference signal, CSI-RS;

the network equipment sends the first message;

wherein, the first message is contained in CSI-RS resource configuration information in a CSI-RS resource set; or

The first message is contained in configuration information of a CSI-RS resource set; or

The first message is contained in CSI resource configuration setting information; or

The first message is contained in CSI reporting configuration setting information.

2. The method of claim 1, wherein the first message is further for indicating whether each transmit port in a port set is a restricted transmit port, or

The first message is also used to indicate whether each transmit port in the port set is an unrestricted transmit port.

3. The method of claim 1 or 2, wherein the port set of the first reference signal includes one or more restricted transmit ports, wherein,

one or more restricted transmitting ports, which are not intersected with time-frequency resources occupied by the non-restricted transmitting ports in the port set in time domain and frequency domain, in the restricted transmitting ports, wherein the time-frequency resources can be configured as transmission resources of data or a second reference signal; and/or

And one or more restricted sending ports, which are intersected with the time-frequency resources occupied by the non-restricted sending ports in the port set in the time domain and the frequency domain, in the restricted sending ports, wherein the time-frequency resources cannot be configured as transmission resources of data or a second reference signal.

4. The method of claim 3, wherein the set of ports for the first reference signal comprises a group of Code Division Multiplexed (CDM) ports, wherein,

in a CDM port group, all ports are limited sending ports, and time-frequency resources occupied by the CDM port group can be configured as transmission resources of data or second reference signals; and/or

And the CDM port group comprises one or more non-restricted sending ports, and time-frequency resources occupied by the CDM port group cannot be configured as transmission resources of data or second reference signals.

5. A method of communication, comprising:

a terminal device receives a first message sent by a network device, wherein the first message indicates at least one limited sending port of the network device, the limited sending port belongs to a port set of a first reference signal, and the first reference signal comprises a channel state information reference signal (CSI-RS);

the terminal equipment determines at least one limited sending port of the network equipment according to the first message;

6. The method of claim 5, wherein the first message is further for indicating whether each transmit port in a port set is a restricted transmit port, or

7. The method of claim 5 or 6, wherein the port set of the first reference signal comprises one or more restricted transmit ports, wherein,

one or more restricted transmitting ports, which are not intersected with time-frequency resources occupied by the non-restricted transmitting ports in the port set in time domain and frequency domain, in the restricted transmitting ports, wherein the time-frequency resources can be configured as transmission resources of data or a second reference signal by the network equipment; and/or

And one or more restricted sending ports, which are intersected with the time-frequency resources occupied by the non-restricted sending ports in the port set in the time domain and the frequency domain, in the restricted sending ports, wherein the time-frequency resources cannot be configured as transmission resources of data or a second reference signal by the network equipment.

8. The method of claim 7, wherein the set of ports for the first reference signal comprises a group of Code Division Multiplexed (CDM) ports, wherein,

in the CDM port group, all the ports are restricted sending ports, and time-frequency resources occupied by the CDM port group can be configured as transmission resources of data or a second reference signal by the network device; and/or

And the CDM port group comprises one or more non-restricted sending ports, and time-frequency resources occupied by the CDM port group cannot be configured as transmission resources of data or a second reference signal by the network equipment.

9. The method of claim 5, wherein the method further comprises:

the terminal device assumes that the transmit power of the restricted transmit port is zero.

10. A communications apparatus, comprising: a transceiver and a processor;

the processor configured to generate a first message indicating a restricted transmit port belonging to a port set of first reference signals, the first reference signals comprising channel state information reference signals, CSI-RS;

the transceiver is used for transmitting the first message;

11. The communications apparatus of claim 10, the first message further indicates whether each transmit port in a port set is a restricted transmit port, or

12. The communications apparatus of claim 10 or 11, wherein the port set of the first reference signal includes one or more restricted transmit ports, wherein,

13. The communications apparatus of claim 12, wherein the set of ports for the first reference signal comprises a group of Code Division Multiplexed (CDM) ports, wherein,

14. A communications apparatus, comprising: a transceiver and a processor;

the transceiver is configured to receive a first message sent by a network device, where the first message indicates at least one restricted sending port of the network device, and the restricted sending port belongs to a port set of a first reference signal, where the first reference signal includes a channel state information reference signal CSI-RS;

the processor is configured to determine at least one restricted transmission port of the network device according to the first message;

15. The communications apparatus of claim 14, the first message further indicates whether each transmit port in a port set is a restricted transmit port, or

16. The communications apparatus of claim 14 or 15, wherein the port set of the first reference signal includes one or more restricted transmit ports, wherein,

17. The communications apparatus of claim 16, wherein the set of ports for the first reference signal comprises a group of Code Division Multiplexed (CDM) ports, wherein,

18. The communications apparatus of claim 14, wherein the processor is further configured to:

the transmit power of the restricted transmit port is assumed to be zero.