CN111953459B

CN111953459B - Communication method and device

Info

Publication number: CN111953459B
Application number: CN201910410963.1A
Authority: CN
Inventors: 许子杰; 董朋朋; 李元杰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2024-04-12
Anticipated expiration: 2039-05-16
Also published as: CN111953459A; WO2020228374A1

Abstract

The first node sends a first value of a first parameter for representing a relation between a first symbol and a constellation symbol corresponding to the first symbol to a second node through first indication information, the second node can process the first symbol received from the first node according to the first value of the first parameter to obtain a third symbol, so that accurate soft information can be obtained, and the second node can obtain an accurate decoding result according to the soft information to improve decoding performance, thereby improving data transmission performance.

Description

Communication method and device

Technical Field

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

Background

In order to improve the forwarding performance of data, a transmission mode for forwarding soft symbols is proposed. In the transmission mode, the node calculates soft information after balancing the received soft symbols to obtain the value of the code bit corresponding to the soft symbol, obtains updated soft information by adopting a decoder, obtains the soft symbol to be transmitted based on the updated soft information, and transmits the soft symbol to be transmitted to the next hop node.

In this transmission mode, the soft symbol is not a corresponding constellation symbol, but a node receiving the soft symbol may misconsider that the received soft symbol is a constellation symbol corresponding to the soft symbol, so that deviation occurs in calculated soft information, and decoding performance is reduced, thereby reducing data transmission performance.

Disclosure of Invention

In a first aspect, a communication method is provided, the method comprising:

the method comprises the steps that a first node obtains a first value of a first parameter, wherein the first parameter represents a relation between a first symbol and a constellation symbol corresponding to the first symbol;

the first node sends first indication information to a second node, wherein the first indication information is used for indicating a first value of the first parameter, and the second node is a next hop node of the first node;

The first node sends the first symbol to the second node.

Therefore, in the communication method provided by the embodiment of the present application, a first node obtains a first value of a first parameter for representing a relationship between a first symbol and a constellation symbol corresponding to the first symbol, and sends the first value of the first parameter to a second node through first indication information, and the second node can process the first symbol received from the first node according to the first value of the first parameter, so as to obtain a third symbol, thereby obtaining accurate soft information, and enabling the second node to obtain an accurate decoding result according to the soft information, so as to improve decoding performance, thereby improving data transmission performance.

Optionally, the first indication information includes a first index, where the first index corresponds to a first value of the first parameter.

Therefore, according to the communication method provided by the embodiment of the application, the first index indicates the first value of the first parameter, so that the signaling overhead can be reduced.

Optionally, the first value of the first parameter is related to link quality.

Optionally, the first index corresponds to the link quality.

Optionally, the first value of the first parameter belongs to a first value set, and the first value set corresponds to the link quality.

Therefore, in the communication method provided by the embodiment of the present application, when the value of the first parameter is indicated by the index, by establishing the correspondence between the value set of the first parameter and the link quality, the values in different value sets can be made to adopt the same index, so that each index occupies a smaller number of bits, and signaling overhead caused by transmitting the index is reduced.

In addition, the second node can determine the value of the first parameter in a large range (for example, a range of 0-1) based on the link quality, and the value of the first parameter can be determined in the first value set, so that the range for determining the value of the first parameter is reduced, and the efficiency of determining the value of the first parameter by the second node is improved.

In a second aspect, there is provided a communication method, the method comprising:

the second node receives a first symbol from a first node, wherein the first node is a last hop node of the second node;

the second node receives first indication information from the first node, wherein the first indication information is used for indicating a first value of a first parameter, and the first parameter represents a relation between the first symbol and constellation symbols corresponding to the first symbol;

And the second node processes the first symbol according to the first value of the first parameter to obtain a third symbol.

Therefore, in the communication method provided by the embodiment of the present application, the second node may process, according to the first value of the first parameter, the first symbol received from the first node by receiving the first indication information sent from the first node and used for indicating the first value of the first parameter, so as to obtain the third symbol, thereby obtaining accurate soft information, so that the second node obtains an accurate decoding result according to the soft information, thereby improving decoding performance, and further improving data transmission performance.

Optionally, the first indication information includes a first index, where the first index corresponds to a first value of the first parameter; the method comprises the steps of,

the method further comprises the steps of:

and the second node determines the first value of the first parameter according to the corresponding relation between the first value of the first parameter and the first index.

Optionally, the first value of the first parameter is related to link quality.

Optionally, the first index corresponds to the link quality.

In a third aspect, a communication method is provided, the method comprising:

a first node obtains a first value of a first parameter and a first value of a second parameter, wherein the first parameter represents a relation between a first symbol and a constellation symbol corresponding to the first symbol, and the second parameter represents a relation between power of the constellation symbol and power of the first symbol;

The first node sends second indicating information to a second node, wherein the second node is a next hop node of the first node, and the second indicating information is used for indicating one of the following: a first value of the first parameter and a first value of the second parameter, or a first value of a third parameter, the first value of the third parameter being related to the first value of the first parameter and the first value of the second parameter;

and the first node sends a second symbol to the second node, wherein the second symbol is obtained by processing the first symbol by using the first value of the second parameter.

Therefore, in the communication method provided by the embodiment of the present application, a first node obtains a first value of a first parameter and a first value of a second parameter, where the first parameter represents a relationship between a first symbol and a constellation symbol corresponding to the first symbol, and the second parameter represents a relationship between power of the constellation symbol and power of the first symbol, and sends second indication information to a second node to indicate the first value of the first parameter and the first value of the second parameter, or indicates the first value of a third parameter related to the first value of the first parameter and the first value of the second parameter, and the second node may process, according to the second indication information, the second symbol received from the first node to obtain a fourth symbol, so as to obtain accurate soft information, so that the second node obtains an accurate decoding result according to the soft information, thereby improving data transmission performance.

Optionally, the second indication information is used for indicating a first value of the first parameter and a first value of the second parameter, the second indication information includes a second index and a third index, the second index corresponds to the first value of the first parameter, and the third index corresponds to the first value of the second parameter; or alternatively, the first and second heat exchangers may be,

the second indication information is used for indicating a first value of the first parameter and a first value of the second parameter, and the second indication information comprises a fifth index, and the fifth index corresponds to the first value of the first parameter and the first value of the second parameter; or alternatively, the first and second heat exchangers may be,

the second indication information is used for indicating the first value of the third parameter, and the second indication information comprises a fourth index, and the fourth index corresponds to the first value of the third parameter.

Therefore, in the communication method provided in the embodiment of the present application, the first value of the first parameter and the first value of the second parameter are indicated by the indexes (for example, the second index and the third index, or the fifth index), or the first value of the third parameter is indicated by the index (for example, the fourth index), so that signaling overhead is reduced.

Optionally, the first value of the first parameter is related to link quality.

Optionally, the second indication information includes the second index and the third index, and the second index corresponds to the link quality; or alternatively, the first and second heat exchangers may be,

the second indication information comprises a fifth index, and the fifth index corresponds to the link quality; or alternatively, the first and second heat exchangers may be,

the second indication information includes the fourth index, and the fourth index corresponds to the link quality.

Optionally, the second indication information includes the second index and the third index, and the first value of the first parameter belongs to a first value set, where the first value set corresponds to the link quality; or alternatively, the first and second heat exchangers may be,

the second indication information comprises the fifth index, the first value of the first parameter belongs to a first value set, and the first value set corresponds to the link quality; or alternatively, the first and second heat exchangers may be,

the second indication information includes the fifth index, the first value of the first parameter and the first value of the second parameter belong to a fourth value set, and the first value set to which the first value of the first parameter belongs in the fourth value set corresponds to the link quality; or alternatively, the first and second heat exchangers may be,

The second indication information includes the fourth index, the first value of the third parameter belongs to a third value set, and the third value set corresponds to the link quality.

Therefore, in the communication method provided in the embodiment of the present application, in the case that the values of the parameters (for example, the value of the first parameter and the value of the second parameter, or the value of the third parameter) are indicated by the indexes, by establishing the correspondence between the value sets of the parameters (for example, the first value set, or the third value set) and the link quality, the values in different value sets can be made to adopt the same index, so that each index occupies a smaller number of bits, so as to reduce the signaling overhead caused by transmitting the index.

In addition, the second node can determine the value of the parameter in one value set (for example, the first value set or the third value set) without determining the value of the parameter in a large range based on the link quality, so that the range of determining the value of the parameter is reduced, and the efficiency of determining the value of the parameter by the second node is improved.

In a fourth aspect, a communication method is provided, the method comprising:

a second node receives a second symbol from a first node, wherein the first node is a last hop node of the second node, the second symbol is a symbol obtained by processing a first value of a second parameter, and the second parameter represents the relation between the power of a constellation symbol corresponding to the first symbol and the power of the first symbol;

The second node receives second indication information from the first node, wherein the second indication information is used for indicating one of the following: a first value of a first parameter and a first value of the second parameter, or a first value of a third parameter, the first value of the third parameter being related to the first value of the first parameter and the first value of the second parameter, the first parameter representing a relationship of the first symbol and the constellation symbol;

and the second node processes the second symbol according to the second indication information to obtain a fourth symbol.

Therefore, in the communication method provided by the embodiment of the present application, the second node receives the second indication information from the first node for indicating the first value of the first parameter and the first value of the second parameter, or receives the second indication information from the first node for indicating the first value of the third parameter related to the first value of the first parameter and the first value of the second parameter, where the first parameter represents a relationship between a first symbol and a constellation symbol corresponding to the first symbol, and the second parameter represents a relationship between power of the constellation symbol and power of the first symbol, and may process the second symbol received from the first node according to the second indication information to obtain the fourth symbol, so that accurate soft information may be obtained, and the second node may obtain accurate decoding result according to the soft information, so as to improve decoding performance, and thereby improve data transmission performance.

Optionally, the second indication information is used for indicating a first value of the first parameter and a first value of the second parameter, the second indication information includes a second index and a third index, the second index corresponds to the first value of the first parameter, and the third index corresponds to the first value of the second parameter; the method comprises the steps of,

the second node processes the second symbol according to the second indication information to obtain a fourth symbol, including:

the second node determines the first value of the first parameter according to the corresponding relation between the first value of the first parameter and the second index, and determines the first value of the second parameter according to the corresponding relation between the first value of the second parameter and the third index;

the second node processes the second symbol according to the first value of the first parameter and the first value of the second parameter to obtain a fourth symbol; or alternatively, the first and second heat exchangers may be,

the second indication information is used for indicating a first value of the first parameter and a first value of the second parameter, and the second indication information comprises a fifth index, and the fifth index corresponds to the first value of the first parameter and the first value of the second parameter; the method comprises the steps of,

the second node determines the first value of the first parameter and the first value of the second parameter according to the fifth index and the corresponding relation between the fifth index and the first value of the first parameter and the first value of the second parameter;

the second indication information is used for indicating a first value of the third parameter, and the second indication information comprises a fourth index, and the fourth index corresponds to the first value of the third parameter; the method comprises the steps of,

the second node determines the first value of the third parameter according to the corresponding relation between the first value of the third parameter and the fourth index;

and the second node processes the second symbol according to the first value of the third parameter to obtain a fourth symbol.

Therefore, according to the communication method provided by the embodiment of the application, the first value of the first parameter and the first value of the second parameter are indicated by the indexes (for example, the second index and the third index, or the fifth index), or the first value of the third parameter is indicated by the index (for example, the fourth index), so that signaling overhead can be reduced.

Optionally, the first value of the first parameter is related to link quality.

In a fifth aspect, there is provided an apparatus operable to implement the respective functions of one or more of the first nodes of the first or third aspects above. The apparatus comprises corresponding units or means for performing the above-described methods. The units comprised by the apparatus may be implemented in a software and/or hardware manner. The apparatus may be, for example, a terminal, or a network device (such as a base station), or a chip, a chip system, or a processor, etc. that may support the terminal or the network device to implement the above functions.

In a sixth aspect, there is provided an apparatus operable to implement the respective functions of one or more of the second nodes of the second or fourth aspects above. The apparatus comprises corresponding units or means for performing the above-described methods. The units comprised by the apparatus may be implemented in a software and/or hardware manner. The apparatus may be, for example, a terminal, or a network device (such as a base station), or a chip, a chip system, or a processor, etc. that may support the terminal or the network device to implement the above functions.

In a seventh aspect, there is provided an apparatus comprising: a processor coupled to a memory for storing a program which, when executed by the processor, causes an apparatus to carry out the method of the first or third aspect described above.

In an eighth aspect, there is provided an apparatus comprising: a processor coupled to a memory for storing a program that, when executed by the processor, causes an apparatus to implement the method of the second or fourth aspect described above.

In a ninth aspect, there is provided a computer program product comprising: computer program code which, when run by a computer, causes the computer to perform the methods of the above aspects.

In a tenth aspect, a computer readable medium is provided for storing a computer program comprising instructions for performing the methods of the above aspects.

In an eleventh aspect, there is provided a chip comprising a processor for calling from a memory and executing instructions stored in the memory, so that a communication device on which the chip is mounted performs the method of the above aspects.

In a twelfth aspect, there is provided another chip comprising: the system comprises an input interface, an output interface, a processor and a memory, wherein the input interface, the output interface, the processor and the memory are connected through an internal connection path, the processor is used for executing codes in the memory, and when the codes are executed, the processor is used for executing the method in each aspect.

In a thirteenth aspect, there is provided a communication system comprising the apparatus of the fifth aspect and the apparatus of the sixth aspect, or comprising the apparatus of the seventh aspect and the apparatus of the eighth aspect.

Drawings

Fig. 1 is a schematic block diagram of a communication system suitable for use in embodiments of the present application.

Fig. 2 is a schematic architecture diagram of one possible suitable for use in the communication system of the embodiments of the present application.

Fig. 3 is a schematic diagram of a communication scenario suitable for use in embodiments of the present application.

Fig. 4 is a schematic interaction diagram of a communication method of an embodiment of the present application.

Fig. 5 is a schematic flow chart of a process of processing soft symbols by a node of an embodiment of the present application.

Fig. 6 is another schematic interaction diagram of a communication method of an embodiment of the present application.

Fig. 7 is another schematic flow chart diagram of a process of processing soft symbols by a node of an embodiment of the present application.

Fig. 8 is a schematic structural view of an apparatus according to an embodiment of the present application.

Fig. 9 is a schematic structural diagram of a terminal according to an embodiment of the present application.

Fig. 10 is a schematic diagram of a communication device according to an embodiment of the present application.

Detailed Description

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

The communication method and the device provided by the embodiment of the application can be applied to a communication system. A schematic diagram of a communication system is shown in fig. 1. The communication system includes one or more network devices (network device 10 and network device 20 are shown for ease of description) and one or more terminal devices in communication with the one or more network devices. Terminal device 11 and terminal device 12 shown in fig. 1 are in communication with network device 10, and terminal device 21 and terminal device 22 are shown in communication with network device 20.

The techniques described in embodiments of the present application may be used for various communication systems, such as 4g,4.5g,5g communication systems, systems where multiple communication systems are converged, or future evolution networks. Such as long term evolution (long term evolution, LTE) systems, new Radio (NR) systems, wireless-fidelity (WiFi) systems, and third generation partnership project (3rd generation partnership project,3GPP) related cellular systems, among other such communication systems.

Fig. 2 shows an exemplary schematic diagram of one possible architecture of a communication system, where the network devices in the radio access network RAN shown in fig. 2 are base stations (e.g. gnbs) of a Centralized Unit (CU) and Distributed Unit (DU) split architecture. The RAN may be connected to a core network (e.g., a core network of LTE or a core network of 5G). CU and DU can be understood as a division of the base station from a logical function perspective. The CUs and DUs may be physically separate or may be deployed together. The function of the RAN terminates at the CU. Multiple DUs may share one. One DU may also connect a plurality of CUs (not shown in the figure). The CU and the DU may be connected by an interface, for example, an F1 interface. CUs and DUs may be partitioned according to the protocol layers of the wireless network. Functions such as a packet data convergence layer protocol (packet data convergence protocol, PDCP) layer and a radio resource control (radio resource control, RRC) layer are provided at the CU, and functions such as a radio link control (radio link control, RLC), a medium access control (media access control, MAC) layer, a physical (physical) layer, and the like are provided at the DU. It will be appreciated that the partitioning of CU and DU processing functions in accordance with such protocol layers is merely an example, and may be partitioned in other ways. For example, a CU or DU may be divided into functions with more protocol layers. For example, a CU or DU may also be divided into partial processing functions with protocol layers. In one design, part of the functions of the RLC layer and the functions of the protocol layers above the RLC layer are set at CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are set at DU. In another design, the functionality of a CU or DU may also be partitioned by traffic type or other system requirements. For example, according to the time delay division, the function of processing time which needs to meet the time delay requirement is set in the DU, and the function which does not need to meet the time delay requirement is set in the CU. The network architecture shown in fig. 2 may be applied to a 5G communication system, which may also share one or more components or resources with an LTE system. In another design, a CU may also have one or more functions of the core network. One or more CUs may be centrally located, as well as separately located. For example, the CUs can be arranged on the network side to facilitate centralized management. The DU may have multiple radio functions, or the radio functions may be set remotely.

The functions of the CU may be implemented by one entity, or the Control Plane (CP) and the User Plane (UP) may be further separated, i.e., the control plane (CU-CP) and the user plane (CU-UP) of the CU may be implemented by different functional entities, and the CU-CP and the CU-UP may be coupled to the DU to jointly implement the functions of the base station.

It is understood that the embodiments provided in this application also apply to architectures where CUs and DUs are not separated.

The network device may be any device having a wireless transceiving function. Including but not limited to: an evolved Node B (NodeB or eNB or e-NodeB) in LTE, a base station (gNodeB or gNB) or a transceiver point (transmission receiving point/transmission reception point, TRP) in NR, a base station for 3GPP subsequent evolution, an access Node in a WiFi system, a wireless relay Node, a wireless backhaul Node, and the like. The base station may be: macro base station, micro base station, pico base station, small station, relay station, or balloon station, etc. Multiple base stations may support networks of the same technology as mentioned above, or may support networks of different technologies as mentioned above. A base station may contain one or more co-sited or non-co-sited TRPs. The network devices may also be wireless controllers, CUs, and/or DUs in the context of a cloud wireless access network (cloud radio access network, CRAN). The network device may also be a server, a wearable device, or an in-vehicle device, etc. The following description will take a network device as an example of a base station. The plurality of network devices may be the same type of base station or different types of base stations. The base station may communicate with the terminal device or may communicate with the terminal device through the relay station. The terminal device may communicate with a plurality of base stations of different technologies, for example, the terminal device may communicate with a base station supporting an LTE network, may communicate with a base station supporting a 5G network, and may support dual connectivity with the base station of the LTE network and the base station of the 5G network.

The terminal equipment is equipment with a wireless receiving and transmitting function, can be deployed on land, and comprises indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). The terminal device may be a mobile phone (mobile phone), a tablet (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a vehicle-mounted terminal device, a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a wearable terminal device, or the like. The embodiments of the present application are not limited to application scenarios. A terminal may also be referred to as a terminal device, user Equipment (UE), access terminal device, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, remote terminal device, mobile device, UE terminal device, wireless communication device, UE agent, UE apparatus, or the like. The terminal device may also be fixed or mobile.

The embodiment of the application can be applied to a communication scene supporting multi-hop.

Taking (a) in fig. 3 as an example, fig. 3 (a) shows one possible communication scenario to which the embodiment of the present application may be applied. Fig. 3 (a) illustrates three nodes: a source node (i.e., S node), a relay node (i.e., R1 node, which may also be referred to as a forwarding node), and a destination node (i.e., D node). The S node sends the target data to the R1 node, and then the R1 node forwards the target data to the D node. The communication scenario illustrated in fig. 3 (a) can be understood as a two-hop communication, i.e., the first hop is from the S node to the R1 node, and the second hop is from the R1 node to the D node.

Taking (B) in fig. 3 as an example, fig. 3 (B) shows another possible communication to which the embodiment of the present application may be applied. Fig. 3 (B) illustrates four nodes: one source node (i.e., S node), two relay nodes (i.e., R1 and R2 nodes, which may also be referred to as two forwarding nodes), and one destination node (i.e., D node). The S node firstly sends the target data to the R1 node and/or the R2 node, and then the R1 node and/or the R2 node forwards the target data to the D node. The communication scenario illustrated in fig. 3 (B) may be understood as a two-hop communication, i.e., the first hop is from the S node to the R1 node and/or the R2 node, and the second hop is from the R1 node and/or the R2 node to the D node.

Taking (C) in fig. 3 as an example, fig. 3 (C) shows another possible communication scenario to which the embodiment of the present application may be applied. Four nodes are illustrated in fig. 3 (C): one source node (i.e., S node), two relay nodes (i.e., R1 and R2 nodes, which may also be referred to as two forwarding nodes), and one destination node (i.e., D node). The S node firstly transmits target data to the R1 node, the R1 node forwards the target data to the R2 node, and the R2 node forwards the target data to the D node. The communication scenario illustrated in fig. 3 (C) may be understood as a three-hop communication scenario, i.e., the first hop is from the S node to the R1 node, the second hop is from the R1 node to the R2 node, and the third hop is from the R2 node to the D node.

Taking (D) in fig. 3 as an example, fig. 3 (D) shows another possible communication scenario to which the embodiment of the present application may be applied. Five nodes are illustrated in (D) of fig. 3: one source node (i.e., S node), three relay nodes (i.e., R1 node, R2 node, and R3 node, which may also be referred to as three forwarding nodes), and one destination node (i.e., D node). The S node firstly transmits target data to the R1 node, the R1 node forwards the target data to the R2 node and/or the R3 node, and the R2 node and/or the R3 node forwards the target data to the D node. The communication scenario illustrated in fig. 3 (D) may be understood as a three-hop communication scenario, i.e., the first hop is from the S node to the R1 node, the second hop is from the R1 node to the R2 node and/or the R3 node, and the third hop is from the R2 node and/or the R3 node to the D node.

It should be noted that fig. 3 is only for illustration, and the embodiments of the present application do not limit the number of hops and the number of relay nodes in the multi-hop communication scenario.

It can be understood that the source node may be a network device or a terminal device; the relay node may be a network device or a terminal device; the destination node may be a network device or a terminal device.

It will be appreciated that embodiments of the present application may also be used for single hop communications, i.e. where the source node sends symbols to the target node.

The following describes the technical scheme of the present application in detail by using specific embodiments with reference to the accompanying drawings. The following specific embodiments and implementations may be combined with each other and some embodiments may not be repeated for the same or similar concepts or processes.

For convenience of description and understanding, first, soft symbols and parameters related to the soft symbols according to embodiments of the present application will be described.

Soft symbols

The soft symbol is a modulation symbol defined by the reliability of the coded bits, which may also be referred to as soft information, and is a modulation symbol obtained by soft-modulating the soft information. One soft symbol corresponds to one constellation symbol, which is a modulation symbol obtained by modulating the coded bits.

Illustratively, one constellation symbol x is composed of Q coded bits c ₁ ，c ₂ ，...，c _Q Modulated into, wherein c _q E {0,1}, q=1, 2. A soft symbol is composed of Q soft information L ₁ ，L ₂ ，...，L _Q Soft modulationThe Q soft information is one-to-one corresponding to the Q code bits.

The soft information may be represented by a log-likelihood ratio (log-likelihood ratio), e.g.,

wherein P (c) _q =1) represents the code bit c _q Probability of taking 1, P (c) _q =0) represents the coded bit c _q Taking the probability of 0.

Next, the generation process of the soft symbol is briefly described.

Illustratively, one constellation includes m=2 ^Q The mth constellation symbol is marked as x _m Constellation symbol x _m From the coded bit c _m，1 ，c _m，2 ，...，c _m，Q Modulated into, wherein c _m，q E {0,1}, q=1, 2,..q, m=1, 2,..m. The probability of the coded bits is represented by soft information by equation (1), i.e

The constellation symbol x can be represented by equation (2) and equation (3) _m Is the probability of constellation symbol x _m The probability of (2) can be expressed as constellation symbol x _m Corresponding code bit c _m，1 ，c _m，2 ，...，c _m，Q Is a probability of (2). I.e.

Further, the expression of the soft symbols may be the probability of each constellation symbol in the constellation and the multiplication of the corresponding constellation symbolThe sum of products willRecorded as soft symbols, i.e. soft symbols can be represented as

The expression of the soft symbol defined by the soft information can be obtained by taking the formula (2) and the formula (3) into the formula (5).

In short, soft symbols are modulation symbols generated by soft-modulating soft information, which is a numerical value indicating the reliability of coded bits, modulating the coded bits to generate constellation symbols, and soft-modulating the soft information to generate soft symbols. Thus, one soft symbol corresponds to one constellation symbol in the constellation. Soft symbols may also be understood as a function of the corresponding constellation symbols, or, depending on the process of generating the soft symbols, the soft symbols may be modeled as a function of the corresponding constellation symbols.

For example, soft symbols may be represented asWherein x represents constellation symbols corresponding to soft symbols, eta represents model parameters, eta is more than 0 and less than or equal to 1, e represents noise parameters, and e is complex.

For another example, to adapt the transmission power of the soft symbol, the soft symbol power rate may be normalized, so that the power of the transmitted soft symbol may be adapted to the transmission power of the constellation symbol corresponding to the soft symbol (e.g., so that the power of the transmitted soft symbol is the same as the transmission power of the constellation symbol corresponding to the soft symbol). In this case, the soft symbols may be represented as, Wherein (1)>Representing soft symbols without power normalization for ease of descriptionThe first symbol is commonly referred to as a full text. />The soft symbol after the power normalization processing is represented by the first symbol, and is denoted as the second symbol for convenience of description, and may be commonly used throughout. x represents a constellation symbol corresponding to the first symbol or the second symbol. Beta represents a power normalization parameter, beta is equal to or greater than 1, and can be understood as the relation between the power of the constellation symbol corresponding to the first symbol and the power of the first symbol, for example, beta can be the ratio of the power of the constellation symbol corresponding to the first symbol to the power of the first symbol, or beta can be the square root of the ratio of the power of the constellation symbol corresponding to the first symbol to the power of the first symbol. Eta represents model parameters, eta is more than 0 and less than or equal to 1, e represents noise parameters, and e is complex. It should be noted that, if the first symbol includes a plurality of soft symbols, the power of the first symbol may be understood as the average power of the plurality of soft symbols.

Model parameter eta

The power normalization process is performed based on a functional model of the soft symbol (i.e., the first symbol) (e.g.,) The model parameter η may represent a scaling relationship between a first symbol and a constellation symbol corresponding to the first symbol, where the constellation symbol is an argument, the first symbol is a dependent variable, and the model parameter is a parameter representing a relationship between the constellation symbol and the first symbol.

Alternatively, η may also represent a probability that a first symbol is correctly decided as a constellation symbol corresponding to the first symbol. For example, the first symbol may be represented asExpanding the formula can be expressed as The formula is combined with->In contrast, xi can be analogized to x, P (x=x _i ) Analog to eta, sigma _m≠i x _m P(x＝x _m ) It can be seen that η may also represent the probability that a first symbol is correctly decided as the constellation symbol to which the first symbol corresponds, as can be analogized to e.

Power normalization parameter beta

As described above, to adapt the power of the first symbol, the power of the first symbol may be normalized to obtain the second symbol, so that the power of the second symbol can be adapted to the power of the constellation symbol corresponding to the second symbol (e.g., so that the power of the second symbol is the same as the power of the constellation symbol corresponding to the second symbol). In this case, the soft symbols may be represented as,thus, β may be understood as the relation of the power of the constellation symbol corresponding to the first symbol to the power of the first symbol, e.g. β may be the ratio of the power of the constellation symbol corresponding to the first symbol to the power of the first symbol, or β may be the square root of the ratio of the power of the constellation symbol corresponding to the first symbol to the power of the first symbol.

Because the soft symbol sent by the node is a function of the constellation symbol corresponding to the soft symbol and is not the corresponding constellation symbol, the node receiving the soft symbol can misunderstand that the received soft symbol is the corresponding constellation symbol, so that the calculated soft information is deviated, the decoding performance is reduced, and the transmission performance of the data is reduced. In the embodiment of the application, in order to improve the transmission performance of data, the node sending the soft symbol sends the parameter related to the soft symbol to the next-hop node of the node by obtaining the parameter related to the soft symbol (for example, a model parameter and/or a power normalization parameter), and the next-hop node can obtain the relation between the soft symbol and the constellation symbol according to the parameter, so as to obtain more accurate soft information, improve the decoding performance and improve the transmission performance of the data.

The communication method according to the embodiment of the present application will be described in detail below with reference to fig. 4 to 7.

Fig. 4 is a schematic interaction diagram of a communication method according to an embodiment of the present application. The first node may be a relay node in a multi-hop scene, or may be a source node in a multi-hop scene or a single-hop scene, and the second node is a next-hop node of the first node. In this embodiment, the first node does not need to perform power normalization processing on the soft symbol, and may directly send the first soft symbol that is not subjected to power normalization processing to the second node.

In S210, the first node obtains a first value of a first parameter, where the first parameter represents a relationship between a first symbol and a constellation symbol corresponding to the first symbol.

The first parameter may be understood as the model parameter η described above, and the first symbol may be understood as the soft symbol that is not subjected to the power normalization process described above.

Illustratively, the first parameter, the first symbol, and the constellation symbol may satisfy _η Representing the scaling relationship between the first symbol and the constellation symbol, wherein x represents the constellation symbol corresponding to the first symbol, ">Representing a first symbol. Alternatively, the first parameter may also represent, for example, a probability that the first symbol is correctly decided as the constellation symbol. For a specific description of the concept of the first parameter, reference may be made to the related description of the model parameter above, which is not repeated here.

The first node may obtain the first value of the first parameter in a plurality of ways, and hereinafter, a way in which the first node obtains the first value of the first parameter will be described in detail with reference to ways 1 to 4.

Mode 1

The first node may derive by minimizing the mean square value of the errorη. For example, η may be calculated using a plurality of soft symbols that have been generated by the first node without power normalization, Wherein (1)>Represents the selected N-th soft symbol, N represents the number of selected soft symbols, +.>Representation->Conjugation of->Represents x _n Conjugate of x _n Representing constellation symbol corresponding to the nth soft symbol, x _n An estimated value may be employed instead, e.g., x may be passed through _n The constellation symbols obtained by the model parameter decision of the corresponding soft symbols are used as estimated values, or the constellation symbols obtained by recoding and modulating the data which is obtained from the decoder and is not subjected to physical layer bit level processing can be used as estimated values.

Mode 2

The first node may determine a probability of a constellation symbol corresponding to the first symbol as a first value of a first parameter of the first symbol. For example, the first node may determine a maximum value of probabilities of the first symbol taking each constellation symbol in the constellation as the first value of the first parameter of the first symbol.

Mode 3

The first node may obtain a first value of the first parameter using an average of a sum of probabilities of constellation symbols corresponding to the soft symbols. For example, the first node may obtain a first value of the first parameter using an average of a sum of probabilities of each of the plurality of generated soft symbols not subjected to the power normalization process taking a corresponding constellation symbol, that is, Wherein xi represents the ith constellation symbol in the constellation diagram, which is the constellation symbol corresponding to the soft symbol, N represents the number of soft symbols, < >>Representing the n-th soft symbol to obtain the maximum probability of the constellation symbol in the constellation diagram, wherein the constellation symbol with the maximum probability is the constellation symbol x corresponding to the soft symbol _i . At this time, η represents an average probability that each of the N soft symbols obtains a constellation symbol corresponding to each soft symbol.

Mode 4

The first value of the first parameter may be predefined. For example, the first value of the first parameter is predefined to be η=0.9, and the first node may obtain the first value of the first parameter according to the predefined η.

Alternatively, the first value of the first parameter may be associated with the link quality.

Specifically, the first node may determine the first value of the first parameter according to the link quality, if the link quality is better, the first value of the first parameter may be selected in a range biased to 1, and if the link quality is worse, the first value of the first parameter may be selected in a range biased to 0. For example, if the link quality is good, the first value of the first parameter may be selected in the range of 0.9 to 1, and if the link quality is poor, the first value of the first parameter may be selected in the range of 0.1 to 0.5.

The link quality may be a range or set of values, or may be a specific value. The link quality may be a link quality between the first node and the neighboring node, for example, a link quality between previous hop nodes of the first node, or a link quality between next hop nodes of the first node.

Illustratively, the link quality may be represented using one or more of the following metric parameters: signal-to-noise ratio (SNR), signal-to-noise and interference ratio, SINR), strength of received signal, channel quality indication (channel quality indicator, CQI), distance, path loss, channel type, vehicle speed, operating frequency point, transceiver antenna configuration, modulation coding scheme (modulation and coding scheme, MCS), reference signal received power (reference signal received power, RSRP), reference signal received quality (reference signal received quality, RSRQ), received signal strength indication (received signal strength indicator, RSSI), and the like.

Taking SNR as an example, if SNR >10dB, for example, the link quality is good, the first value of the first parameter is selected in a range biased to 1, and if SNR is less than or equal to 10dB, the first value of the first parameter is selected in a range biased to 0.

In S220, the first node sends first indication information to the second node, where the first indication information is used to indicate a first value of the first parameter, and the second node is a next hop node of the first node. Correspondingly, the second node receives the first indication information to obtain a first value of the first parameter.

The first indication information may include the first value of the first parameter, or may include any content capable of indicating the first value of the first parameter, for example, the first indication information includes an index corresponding to the first value of the first parameter.

The first indication information may be carried through one or more of radio resource control (radio resource control, RRC) signaling, a medium access control (media access control, MAC) Control Element (CE), or a physical control channel. The physical control channel may be, for example, a physical downlink control channel (physical downlink control channel, PDCCH) or a physical side link control channel (physical sidelink control channel, PSCCH), etc.

When the first indication information is carried by the control information in the physical control channel, the control information may carry the first indication information by one of the following ways: in a possible implementation, the control information is independent control information, and the indication field carries the first indication information through the control information. In another possible implementation, the first indication information is carried by reusing an indication field in existing control information, for example, a reserved field in existing control information, which may be an existing modulation and coding scheme (modulation and coding scheme, MCS) field for retransmission, or may be some fields in control information that may be unchanged, for example, a BWP indication field for indicating a bandwidth part (BWP), and the BWP indication field may be reused for carrying the first indication information after BWP is configured fixedly or semi-statically.

The first indication information may be transmitted in a periodic or event-triggered manner when the first indication information is carried on higher layer signaling (e.g., RRC signaling, MAC CE). When the first indication information is transmitted in an event-triggered manner, the first node may be triggered by an update of a routing table of a node related to the first node, where the update of the routing table may be a case of joining a new node, leaving a node, and the like.

In S230, the first node transmits the first symbol to the second node. Correspondingly, the second node receives the first symbol.

Illustratively, the first node may pre-process the first symbol prior to transmitting the first symbol, e.g., the pre-processing may include one or more of: layer mapping, precoding, antenna port mapping, physical resource mapping, etc.

In S240, the second node processes the first symbol according to the first value of the first parameter to obtain a third symbol.

It should be noted that, when the first symbol passes through the wireless channel, the first symbol is affected by various factors such as fading, noise, or doppler shift in the wireless channel, and when the first symbol is received by the second node, the first symbol of the deformation is also referred to as a first symbol in the second node for simplicity of description.

The third symbol is a symbol obtained by processing the first symbol, and the processing procedure uses the first value of the first parameter, which is described in detail below with reference to S242.

It is assumed that the first symbol transmitted by the first node may be noted asThe first symbol received by the second node is marked +.>Where h represents channel state information (channel state information, CSI) of the channel, w represents noise, and x represents constellation symbols corresponding to first symbols transmitted by the first node or received by the second node.

In the following, in connection with fig. 5, the step S241 and S242 are described in detail, and in the case that the second node is a relay node in a multi-hop scenario, the step S251 and S252 are optional to describe in detail the generation of a symbol to be transmitted by the second node.

S241, equalization

Equalization is a process of removing the influence of a channel on a received signal, and symbols generated by performing equalization processing on a first symbol y are recorded asWherein (1)>

S242, calculating soft information

In calculating soft information, it is necessary to make the coefficient of the constellation symbol as an argument be 1. Illustratively, y '=ηx+w' is divided by η at the same time to obtainWherein (1)>In this process, the value of η needs to be explicitly determined to obtain y ", so that the coefficient of the constellation symbol as the argument is 1.

Here, y "may be understood as a third symbol obtained by processing the first symbol by the second node according to the first value of the first parameter η, where the third symbol may be understood as a soft symbol. The third symbol is a soft symbol obtained by processing the first symbol by the second node, the first symbol is a soft symbol received by the second node, and the first symbol corresponds to a constellation symbol, so that the first symbol and the third symbol correspond to the same constellation symbol. The first symbol and the third symbol may also be understood as soft symbols obtained by the second node at different processing stages.

Illustratively, the encoded bits of the constellation symbols corresponding to the first symbol are denoted as c, c including c ₁ ，c ₂ ，...，c _Q The corresponding soft information is denoted as L, L including L ₁ ，L ₂ ，...，L _Q Soft information can be calculated by formula (6)

Wherein sigma ² The variance of w' is represented by the variance of Gaussian white noise w and model parameter eta, pi ₁ And pi ₀ Respectively represent the coded bits c _q And respectively taking the corresponding constellation symbol sets when 1 and 0 are adopted.

S251, obtaining updated soft information and decoding result

In this process, the soft information obtained in S242 is input to the decoder, and updated soft information and decoding results can be obtained by the decoder. The process of obtaining the decoding result by the decoder may be understood as a process of decoding the encoded bits to obtain data that is not subjected to physical layer bit level processing, where the physical layer bit level processing may include one or more of the following processes: the process of obtaining updated soft information by a decoder may be understood as a process in which the decoder mathematically processes the input soft information using channel coding characteristics, such as segmentation, concatenation, channel coding, rate matching, scrambling, and addition of cyclic redundancy check (cyclic redundancy check, CRC), etc. For ease of distinction, the updated soft information is denoted as L'.

If the second node is the last node in the multi-hop or single-hop scene, namely the destination node, the second node takes the decoding result as the final result to obtain the data which is not processed by the physical layer bit level.

If the second node is a relay node in the multi-hop scenario, the second node uses the updated soft information to calculate the soft symbol to be transmitted through S252, and for convenience of distinguishing and understanding, the soft symbol to be transmitted obtained by the second node is recorded as a fifth symbol.

And S252, obtaining a fifth symbol based on the updated soft information.

The soft information is obtained by the formula (6), in which step the soft information can be further obtained by the formula (1)

The probability of the coded bit is obtained, i.e., equation (2) and equation (3), and the fifth symbol is obtained by equation (4) and equation (5). The detailed description may be related to the soft symbol generation process described above, and for brevity, will not be repeated here.

Based on the obtained fifth symbol, the second node may perform preprocessing on the fifth symbol and send the preprocessed fifth symbol to the next hop node, where the manner in which the second node performs preprocessing on the fifth symbol may refer to the manner in which the first node performs preprocessing on the first symbol, which is not described herein.

As described above, the first indication information may include the first value of the first parameter, or may include an index (for convenience of distinction and understanding, referred to as a first index) corresponding to the first value of the first parameter. By carrying the first index with the first indication information, signaling overhead may be reduced. Next, embodiments of the present application will be described in detail with respect to a case where the first indication information includes the first index.

The method further comprises the steps of:

the second node determines the first value of the first parameter according to the corresponding relation between the first value of the first parameter and the first index.

Optionally, the first value of the first parameter belongs to a first value set, where the first value set includes a plurality of values, and the plurality of values are in one-to-one correspondence with a plurality of indexes. For convenience of description, the correspondence between the plurality of values and the plurality of indexes of the first value set may be denoted as a first group of correspondence, and the correspondence between the first value of the first parameter and the first index may be denoted as a first correspondence. And the second node determines a first value of a first parameter corresponding to the first index according to the first corresponding relation and the first index in the first group of corresponding relations.

The first set of correspondence relationships may be described in the form of tables and/or formulas, for example, without any limitation. The first set of correspondence may be predefined or may be obtained by the second node from other nodes, for example, the first node may indicate the first set of correspondence through indication information, and the second node determines the first set of correspondence according to the indication information.

Table 1 shows the correspondence between the values of the first parameter and the indexes (i.e., the first group of correspondence), wherein a _i And (3) representing the ith value of the first parameter, wherein i is a natural number, and one value of the first parameter corresponds to one index. Illustratively, a first value setThe sum may be represented by [ a ] ₀ ，a ₁ ，a ₂ ，a ₃ ，a ₄ ，a ₅ ，a ₆ ，a ₇ ，a ₈ ，a ₉ ，a ₁₀ ，a ₁₁ ，a ₁₂ ，a ₁₃ ，a ₁₄ ，a ₁₅ ]The first value of the first parameter may be one of the first set of values.

TABLE 1

Index	0000	0001	0010	0011	0100	0101	0110	0111
									First parameter	a ₀	a ₁	a ₂	a ₃	a ₄	a ₅	a ₆	a ₇
Index	1000	1001	1010	1011	1100	1101	1110	1111
									First parameter	a ₈	a ₉	a ₁₀	a ₁₁	a ₁₂	a ₁₃	a ₁₄	a ₁₅

Alternatively, the first set of values may be one of a plurality of sets of values. Each of the plurality of value sets includes a plurality of values, and one value in one value set corresponds to one index. The indexes corresponding to the values in each of the two value sets may be the same or different, and are not limited herein, for example, the multiple value sets include a first value set and a second value set, the indexes corresponding to the values in the first value set may be 00, 01, 10 and 11, the indexes corresponding to the values in the second value set may be 00, 01, 10 and 11, or the indexes corresponding to the values in the second value set may be 000, 010, 100 and 110. Similarly, for convenience of description, the correspondence between a plurality of values and a plurality of indexes in one value set is recorded as a set of correspondence, the plurality of value sets respectively have a plurality of sets of correspondence, and similar to the first set of correspondence, each set of correspondence in the plurality of sets of correspondence can be described in the form of a table and/or a formula, and the specific form is not limited.

In the case that there are multiple sets of correspondence, each set of correspondence may be predefined, or may be obtained by the second node from, for example, the first node, for example, sends the multiple sets of correspondence to the second node through information.

In order to make the second node determine that the first value of the first parameter needs to be obtained by using the first set of correspondence, the first node may send, to the second node, an index corresponding to the first set of correspondence, where the second node determines, according to the index, the first set of correspondence corresponding to the index from the multiple sets of correspondence, and determines, from the first set of correspondence, the first value of the first parameter corresponding to the first index.

In this embodiment of the present application, the link quality may be associated with the value of the first parameter, for example, as described above, where the first value of the first parameter is related to the link quality, and details about the link quality and the value of the first parameter are described below.

Optionally, the first value of the first parameter belongs to a first value set, and the first value set corresponds to the link quality. The specific description of the link quality may refer to the related description above, and will not be repeated here.

Optionally, the first value set belongs to a plurality of value sets, and one value set corresponds to one link quality.

For example, the plurality of value sets includes two value sets, namely value set #1 and value set #2, respectively, and the first value set may be one of value set #1 or value set #2, where value set #1 corresponds to link quality #1, and value set #2 corresponds to link quality #2. To characterize chains using SNRFor example, the link quality and the link quality may be in a range of a number, for example, the range of SNR of the link quality #1 may be SNR equal to or less than a dB, the range of SNR of the link quality #2 may be SNR > a dB corresponding to the value set #1, and the link quality #1 may be worse than the link quality #2 corresponding to the value set #2. For another example, the range of SNR for link quality #1 may be SNR > a dB, and the range of SNR for link quality #2 may be SNR < a dB for value set #1, and link quality #1 may be better than link quality #2 for value set #2. Taking the example of characterizing link quality with SNR and link quality being a set of values, for example, the range of values for SNR for link quality #1 may be SNR ε { a ₀ ，a ₁ ，...，a _n The set of values for SNR for Link quality #2 may be SNR ε { b }, corresponding to the set of values #1 ₀ ，b ₁ ，...，b _n Corresponding to the value set #2, the link quality #1 is better than the link quality # 2. As another example, the range of SNR for link quality #1 may be SNR ε { b ₀ ，b ₁ ，...，b _n Corresponding to the value set #1, the range of SNR for link quality #2 may be SNR ε { a } ₀ ，a ₁ ，...，a _n Corresponding to the value set #2, the link quality #1 is worse than the link quality # 2.

For example, tables 2 and 3 are each a set of values of a first parameter corresponding to link quality, a _i The i-th value of the first parameter is represented, i being a natural number. Table 2 shows a set of values of the first parameter corresponding to a better link quality, e.g. [ a ] ₀ ，a ₁ ，a ₂ ，a ₃ ，a ₄ ，a ₅ ，a ₆ ，a ₇ ]＝[1，0.95，0.9，0.85，0.8，0.75，0.7，0.65]The corresponding value set for poor link quality shown in Table 3, e.g., [ a ] ₈ ，a ₉ ，a ₁₀ ，a ₁₁ ，a ₁₂ ，a ₁₃ ，a ₁₄ ，a ₁₅ ]＝[0.6，0.55，0.5，0.45，0.4，0.35，0.3，0.25]. For example, if the link quality is good, the first value set may be a value set in table 2, and the first value for the first parameter may be one value in table 2; if the link quality is poor, the first value set canIn order to be the set of values in table 3, the first value for the first parameter may be one value in table 3.

TABLE 2

Index	000	001	010	011	100	101	110	111
									First parameter	a ₀	a ₁	a ₂	a ₃	a ₄	a ₅	a ₆	a ₇

TABLE 3 Table 3

Index	000	001	010	011	100	101	110	111
									First parameter	a ₈	a ₉	a ₁₀	a ₁₁	a ₁₂	a ₁₃	a ₁₄	a ₁₅

When the first value set belongs to a plurality of value sets, each value set corresponds to one link quality, and it can be understood that a set of correspondence between a plurality of values and a plurality of indexes of each value set corresponds to one link quality. For example, the first node may send, to the second node, indication information for indicating link quality corresponding to the first value set, where the second node determines, according to the link quality indicated by the indication information, a first set of correspondence between the multiple value sets of the first value set and the multiple indexes, so that, in the first set of correspondence, a first value of the first parameter is determined according to a first correspondence between the first index and a first value of the first parameter and the first index.

For example, taking table 2 and table 3 as examples, the first node may send, to the second node, indication information for indicating the link quality corresponding to the first value set. If the link quality indicated by the indication information is good, the corresponding relationship shown in table 2 can be determined to be the first group of corresponding relationship, or the value set shown in table 2 can be determined to be the first value set; if the link quality indicated by the indication information is poor, the corresponding relationship shown in table 3 may be determined to be the first group of corresponding relationships, or the value set shown in table 3 may be determined to be the first value set.

Therefore, in the communication method provided by the embodiment of the present application, in the case that the value of the first parameter is indicated by the index, by establishing the correspondence between the value sets and the link quality, the values in different value sets can be made to adopt the same index, so that each index occupies a smaller number of bits, and signaling overhead caused by transmitting the index is reduced. For example, assuming that the first parameter has 30 values, corresponding to 30 indexes, if 30 values are not associated with the link quality, a 5-bit design index may be adopted, and any two indexes are not repeated, if 30 values are associated with the link quality, for example, 15 values in the 30 values are taken as a value set #1, corresponding to the link quality #1, a 4-bit design index may be adopted, the remaining 15 values are taken as a value set #2, corresponding to the link quality #2, a 4-bit design index is also adopted, and compared with a mode adopting a 5-bit design index, the number of bits occupied by the index is reduced, thereby reducing signaling overhead caused by transmission of the index.

In this embodiment of the present application, an index corresponding to the value of the first parameter may also be associated with the link quality.

Optionally, the first index corresponds to a link quality, wherein the link quality may be a link quality between the first node and the other node, e.g. the link quality may be a link quality between the first node and the second node.

For example, the link quality may be characterized by CQI, and the first index corresponds to one CQI (for convenience of distinction, denoted as first CQI), and the second node may determine the first index through the first CQI to determine the first value of the corresponding first parameter through the first index.

Alternatively, the CQI may be indicated by an index, and the CQI or the index of the CQI may be used as the index of the value of the first parameter. For example, the index in table 4 may be CQI or an index of CQI.

TABLE 4 Table 4

The process of obtaining and sending the first value of the first parameter by the first node is described in detail above with reference to fig. 4 and 5, and the communication method 300 according to another embodiment of the present application is described in detail below with reference to fig. 6 and 7, where fig. 6 is a schematic interaction diagram of the communication method according to the embodiment of the present application, and fig. 7 is a schematic flowchart of a process of processing the received symbol by the node. In this embodiment, the first node transmits the power normalized symbol, and the transmitted parameter includes content related to the first value of the model parameter and/or the first value of the power normalized parameter.

In S310, the first node obtains a first value of a first parameter and a first value of a second parameter, where the first parameter represents a relationship between a first symbol and a constellation symbol corresponding to the first symbol, and the second parameter represents a relationship between power of the constellation symbol and power of the first symbol.

The first parameter may be understood as the model parameter η described above, the first symbol may be understood as a soft symbol generated without performing power normalization processing, and the second parameter may be understood as the power normalization parameter β described above. For a specific description of the concepts of the first and second parameters, reference may be made to the above description regarding the model parameters and the power normalization parameters, which are not repeated here.

The first node may obtain the first value of the first parameter in a plurality of manners, and for a specific description, reference may be made to the description related to S210 in the method 200, which is not repeated herein.

The manner in which the first node obtains the first value of the second parameter will be described in detail below in conjunction with the manner a and the manner B.

Mode A

In one possible implementation, β may be obtained by calculating the power of a plurality of soft symbols that have been generated without power normalization processing, e.g., N represents the number of soft symbols, +.>Indicating the selected nth soft symbol.

Mode B

Typically, the soft symbols are not on the corresponding constellation symbols, and in order to make the power of the transmitted soft symbols identical to the power of the corresponding constellation symbols, the soft symbols that are not subjected to power normalization processing may be mapped onto an equivalent higher-order constellation symbol to generate the transmitted soft symbols (i.e., new soft symbols). For convenience of description, a constellation diagram to which a constellation symbol corresponding to a soft symbol which is not subjected to power normalization processing belongs is denoted as a first constellation diagram, and a constellation diagram to which an equivalent high-order constellation symbol belongs is denoted as a second constellation diagram, wherein a modulation order of a modulation mode of the second constellation diagram is greater than or equal to a modulation order of a modulation mode of the first constellation diagram. The mapping rule can be used for calculating Euclidean distances between the soft symbol subjected to beta amplification and each constellation point in the second constellation diagram after the soft symbol not subjected to power normalization processing is subjected to beta amplification, and taking the constellation point with the shortest Euclidean distance as the transmitted soft symbol generated based on the mapping rule, so that the power of the transmitted soft symbol is ensured to be the same as that of the corresponding constellation symbol. It can be understood that, in general, the modulation order of the modulation scheme of the second constellation is greater than the modulation order of the modulation scheme of the first constellation, the second constellation includes more constellation symbols, the distance between the constellation symbols is small by scaling β of the second constellation, and soft symbols corresponding to constellation symbols in the first constellation that are not subjected to power normalization processing are easily mapped on a certain constellation symbol in the second constellation, so that the power of the transmitted soft symbols is the same as the power of the constellation symbols in the second constellation, and then the second constellation is amplified by β to restore the second constellation, so as to obtain the transmitted soft symbols.

Thus, based on the above-described idea, in another possible implementation, β may be obtained by calculating the size ratio of the second constellation and the first constellation, which may also be referred to herein as a constellation quantization factor. Specifically, β may be calculated by a ratio of the maximum values of the real or imaginary parts corresponding to the second constellation and the first constellation.

Table 5 shows constellation quantization factors between the second constellation and the first constellation. As can be seen from table 5, the closer the modulation orders of the modulation schemes of the two constellations are, the closer to 1 the value of β is, whereas the larger the modulation orders of the modulation schemes of the two constellations are different, the more the value of β tends to be 0.

TABLE 5

In S320, the first node transmits second indication information to the second node, where the second indication information is used to indicate one of the following: the first value of the first parameter and the first value of the second parameter, or the first value of the third parameter, the first value of the third parameter is related to the first value of the first parameter and the first value of the second parameter, and the second node is the next hop node of the first node. Correspondingly, the second node receives the second indication information.

The third parameter is related to the first parameter and the second parameter, and may be a parameter obtained by performing a correlation operation on the first parameter and the second parameter. For example, the third parameter may be expressed as a product of the first parameter and the second parameter, i.e. the third parameter may be βη. For another example, the third parameter may be expressed as a function f (β, η) of the first parameter and the second parameter. Correspondingly, the first value of the third parameter is related to the first value of the first parameter and the first value of the second parameter, and may be a parameter obtained by performing a correlation operation on the first value of the first parameter and the second parameter.

In the case where the second indication information is used to indicate the first value of the first parameter and the first value of the second parameter, the second indication information may include the first value of the first parameter and the first value of the second parameter, or may include any content capable of indicating the first value of the first parameter and the first value of the second parameter, for example, the second indication information includes an index corresponding to the first value of the first parameter and an index corresponding to the first value of the second parameter.

Similarly, in the case where the second indication information is used to indicate the first value of the third parameter, the second indication information may include the first value of the third parameter, or may include any content capable of indicating the first value of the third parameter, for example, the second indication information includes an index corresponding to the first value of the third parameter.

The second indication information may be transmitted through a physical control channel or may be transmitted through higher layer signaling (e.g., RRC signaling, MAC CE), and the detailed description may refer to the related description of the first indication information in S220 above, which is not repeated herein.

In S330, the first node sends a second symbol to the second node, where the second symbol is a symbol obtained by processing the first symbol with the first value of the second parameter. Correspondingly, the second node receives the second symbol.

Wherein the second symbol is obtained by performing power normalization processing on the first symbol by adopting the first value of the second parameter, for example, adoptingRepresenting a first symbol, a second symbol may be represented as +.>

The second symbol is a soft symbol obtained by processing the first symbol by the first node, and the first symbol corresponds to a constellation symbol, so that the first symbol and the second symbol correspond to the same constellation symbol. The first symbol and the third symbol may also be understood as soft symbols obtained by the first node at different processing stages.

The first node may pre-process the second symbol before transmitting the second symbol, e.g., the pre-processing may include one or more of: layer mapping, or precoding, or antenna port mapping, or physical resource mapping, etc.

In S340, the second node processes the second symbol according to the second indication information to obtain a fourth symbol.

The second symbol, which is subject to various factors such as fading, noise, and doppler shift in the radio channel when passing through the radio channel, is distorted in amplitude and/or phase when received by the second node, and the distorted second symbol is also referred to as a second symbol in the second node for simplicity of description.

The fourth symbol is a symbol processed for the second symbol, and reference is made to the following detailed description about S342.

It is assumed that the second symbol transmitted by the first node can be written asThe second symbol received by the second node is denoted +.>Where h represents CSI of the channel, w represents white gaussian noise, and x represents constellation symbols corresponding to second symbols transmitted by the first node or received by the second node. Hereinafter, in connection with fig. 7, S340 will be described in detail through steps S341 and S342, and in the case where the second node is a relay node in a multi-hop scenario, the symbol to be transmitted is generated by the second node through optional S351, optional S352, and optional S353.

S341, equalization

The symbol generated after the equalization processing of the second symbol y is recorded as Wherein (1)>

S342, calculating soft information

In calculating soft information, it is necessary to make the coefficient of the constellation symbol as an argument be 1. Illustratively, y '=βηx+w' is divided by βη at the same time on both sides to obtainIn this process, it is necessary to specify the value of βη to obtain y "so that the coefficient of the constellation symbol as an argument is 1.

Here, y "may be understood as a fourth symbol obtained by processing the second symbol by the second node according to the second indication information, and the fourth symbol may be understood as a soft symbol. That is, the second node processes the second symbol according to the first value of the first parameter and the second value of the second parameter to obtain a fourth symbol, or processes the second symbol according to the first value of the third parameter to obtain a fourth symbol.

The fourth symbol is a soft symbol obtained by processing the second symbol by the second node, the second symbol is a soft symbol received by the second node, and the second symbol corresponds to the first symbol, so that the first symbol, the second symbol and the fourth symbol correspond to the same constellation symbol. The second symbol and the fourth symbol are soft symbols obtained by the second node in different processing stages, and the first symbol and the second symbol are soft symbols obtained by the first node in different processing stages.

Illustratively, the encoded bits of the constellation symbols corresponding to the fourth symbol are denoted as c, c including c ₁ ，c ₂ ，...，c _Q The corresponding soft information is denoted as L, L including L ₁ ，L ₂ ，...，L _Q Soft information can be calculated by formula (6)

Wherein sigma ² The variance of w' is calculated from the variance of Gaussian white noise w, the first parameter eta and the second parameter beta, pi ₁ And pi ₀ Respectively represent the coded bits c _a And respectively taking the corresponding constellation symbol sets when 1 and 0 are adopted.

S351, obtaining updated soft information and decoding result

In this process, the soft information obtained in S342 is input to a decoder, and updated soft information and decoding results are obtained by the decoder, wherein the process of obtaining decoding results by the decoder includes decoding encoded bits to obtain data that has not undergone physical layer bit level processing, which may include one or more of the following: the process of obtaining updated soft information by a decoder may be understood as a process in which the decoder mathematically processes the input soft information using channel coding characteristics, such as segmentation, concatenation, channel coding, rate matching, scrambling, and addition of cyclic redundancy check (cyclic redundancy check, CRC), etc. For ease of distinction, the updated soft information is denoted as L'.

If the second node is a relay node in the multi-hop scenario, the second node uses the updated soft information as information to be used, the symbol to be transmitted may be obtained through S352 and S353, for convenience of distinguishing and understanding, the symbol obtained by the second node through S352 is denoted as a sixth symbol, the symbol obtained in S353 is denoted as a seventh symbol, where the sixth symbol may be understood as the soft symbol obtained by the second node and not subjected to the power normalization process described above, and the seventh symbol may be understood as the soft symbol obtained by the second node and subjected to the power normalization process described above.

And S352, obtaining a sixth symbol based on the updated soft information.

The process of obtaining the sixth symbol is similar to the process of obtaining the fifth symbol in S252, and for brevity, reference may be made to the above description about S252 for brevity.

S353, obtain seventh symbol

In order to increase the transmission power of the sixth symbol, the sixth symbol may be subjected to power rate normalization processing to obtain a seventh symbol. In an exemplary embodiment, the second node may perform preprocessing on the seventh symbol and send the preprocessed seventh symbol to the next-hop node, where the manner in which the second node performs preprocessing on the seventh symbol may refer to the manner in which the first node performs preprocessing on the second symbol, which is not described in detail herein.

In S320, the first node may send only the first value of the first parameter or the first value of the second parameter through the second instruction information. In S340, the second node may process the received second symbol according to the first value of the first parameter or the first value of the second parameter, still assuming that the second symbol received by the second node is recorded as If the second indication information indicates only the first value of the first parameter, the fourth symbol obtained in S341 is +.>Wherein (1)>In the process of calculating the soft information, although the second node regards βx as a constellation symbol, compared with the situation that βηx is regarded as a constellation symbol in the prior art, more accurate soft information can be obtained, so that the decoding performance is improved. Similarly, if the second indication information indicates only the first value of the second parameter, the fourth symbol obtained in S341 is +.>Wherein (1)>In the process of calculating the soft information, although the second node considers ηx as a constellation symbol, compared with the case of considering βηx as a constellation symbol in the prior art, more accurate soft information can be obtained, thereby improving decoding performance.

As described above, the second instruction information may indicate the first value of the third parameter, or may indicate the first value of the first parameter and the first value of the second parameter, and for convenience of description, details concerning the values of the parameters of the second instruction information will be described in detail in two cases.

Case a: the second indication information is used for indicating the first value of the third parameter

The second indication information may include the first value of the third parameter, or may include an index (for convenience of distinction and understanding, denoted as a fourth index) corresponding to the first value of the third parameter. By carrying the fourth index with the second indication information, the signaling overhead can be reduced. Next, embodiments of the present application will be described in detail with respect to a case where the second instruction information includes the fourth index.

Optionally, the second indication information includes a fourth index, where the fourth index corresponds to the first value of the third parameter; the method comprises the steps of,

Optionally, the first value of the third parameter belongs to a third value set, and the third value set includes a plurality of values, where the plurality of values are in one-to-one correspondence with a plurality of indexes. For convenience of description, the correspondence between the multiple values and the multiple indexes of the third value set may be denoted as a third group of correspondence, and the correspondence between the first value of the third parameter and the fourth index may be denoted as a fourth correspondence. The third set of correspondence may be described in the form of a table and/or a formula, and the specific form is not limited in any way. And the second node determines a first value of a third parameter corresponding to a fourth index according to the fourth corresponding relation and the fourth index in the third group corresponding relation.

The third set of correspondence may be predefined or may be obtained by the second node from other nodes, for example, the first node may indicate the third set of correspondence through indication information, and the second node determines the third set of correspondence according to the indication information.

Alternatively, the third value set may be one of a plurality of value sets, each value set of the plurality of value sets including a plurality of values, one value of the one value set corresponding to one index. The indexes corresponding to the values in each of the two value sets may be the same or different, and are not limited in any way. . Similar to the description of the relationship between the first value set and the index in the method 200, the correspondence between the multiple values in one value set and the multiple indexes may be recorded as a set of correspondence, the multiple value sets respectively have multiple sets of correspondence, and each set of correspondence in the multiple sets of correspondence may be described in the form of a table and/or a formula, which is not limited in any way.

In order to make the second node determine that the first value of the third parameter needs to be obtained by using the third set of correspondence, the first node may send, to the second node, an index corresponding to the third set of correspondence, where the second node determines, according to the index, the third set of correspondence corresponding to the index from the multiple sets of correspondence, and determines, from the third set of correspondence, the first value of the third parameter corresponding to the fourth index.

In this embodiment of the present application, the value of the first parameter may be associated with the link quality, naturally, the value of the third parameter is associated with the link quality, and details about the link quality and the value of the third parameter are described below.

Optionally, the first value of the third parameter belongs to a third value set, and the third value set corresponds to the link quality. The specific description of the link quality may refer to the related description above, and will not be repeated here.

Optionally, the third value set belongs to a plurality of value sets, and one value set corresponds to one link quality. For example, the plurality of value sets includes two value sets, namely value set #3 and value set #4, and the third value set may be one of value set #3 or value set #4, where value set #3 corresponds to link quality #3 and value set #4 corresponds to link quality #4.

For example, tables 6 and 7 show a set of values of the third parameter corresponding to the link quality, where ci represents the ith value of the first parameter, and i is an integer. Wherein Table 6 shows a set of values of the third parameter corresponding to a better link quality, e.g. [ c ] ₀ ，c ₁ ，c ₂ ，c ₃ ，c ₄ ，c ₅ ，c ₆ ，c ₇ ]＝[1.2，1.15，1.10，1.05，1.00，0.95，0.80，0.75]The corresponding value set when the link quality is poor shown in Table 7, [ c ] ₈ ，c，c ₁₀ ，c ₁₁ ，c ₁₂ ，c ₁₃ ，c ₁₄ ，c ₁₅ ]＝[0.65，0.60，0.55，0.50，0.45，0.40，0.35，0.30]. For example, if the link quality is good, the third value set may be a value set in table 6, and the first value for the third parameter may be one value in table 6; if the link quality is poor, the third value set may be a value set in table 7, and the first value for the third parameter may be one value in table 7.

TABLE 6

Index	000	001	010	011	100	101	110	111
									Third parameter	c ₀	c ₁	c ₂	c ₃	c ₄	c ₅	c ₆	c ₇

TABLE 7

Index	000	001	010	011	100	101	110	111
									Third parameter	c ₈	c ₉	c ₁₀	c ₁₁	c ₁₂	c ₁₃	c ₁₄	c ₁₅

In the case that the third value set belongs to a plurality of value sets, one value set corresponds to one link quality, or it may be understood that a set of correspondence between a plurality of values and a plurality of indexes of each value set corresponds to one link quality. For example, the first node may send, to the second node, indication information for indicating link quality corresponding to the third value set, where the second node determines, according to the link quality indicated by the indication information, a third set of correspondence between a plurality of values in the third value set and a plurality of indexes, and thus, in the third set of correspondence, determines, according to a fourth correspondence between a fourth index and a first value of a third parameter and the fourth index, the first value of the third parameter.

Therefore, in the communication method provided by the embodiment of the present application, in the case that the value of the third parameter is indicated by the index, by establishing the correspondence between the value sets and the link quality, the values in different value sets can be made to adopt the same index, so that each index occupies a smaller number of bits, and signaling overhead caused by transmitting the index is reduced.

In the embodiment of the present application, an index corresponding to the value of the third parameter may be associated with the link quality.

Optionally, the fourth index corresponds to link quality.

For example, the link quality may be characterized by CQI, and the fourth index corresponds to one CQI (for convenience of distinction, denoted as fourth CQI), and the second node may determine the fourth index through the fourth CQI, so as to determine the first value of the corresponding third parameter through the fourth index.

Alternatively, the CQI may be indicated by an index, and the CQI or the index of the CQI may be used as the index of the value of the third parameter.

Case B: the second indication information is used for indicating the first value of the first parameter and the first value of the second parameter

The second indication information may include a first value of the first parameter and a first value of the second parameter, or may include an index corresponding to the first value of the first parameter and an index corresponding to the first value of the second parameter. The signaling overhead can be reduced by indexing the values of the second indication information carrying parameters. Next, in the case where the second instruction information includes an index, the embodiments of the present application are described in detail based on two cases (case B1 and case B2), respectively.

Case B1

Optionally, the second indication information is used for indicating the first value of the first parameter and the first value of the second parameter, the second indication information includes a second index and a third index, the second index corresponds to the first value of the first parameter, and the third index corresponds to the first value of the second parameter; the method comprises the steps of,

the second node processes the second symbol according to the first value of the first parameter and the first value of the second parameter to obtain a fourth symbol.

The second index and the third index may be the same or different, and the embodiments of the present application do not limit at all.

That is, in this case, indexes may be respectively designed for the two parameters, and the values of the two parameters are respectively indicated by the two indexes (i.e., the second index and the third index), so that the second node determines the values of the two parameters according to the indexes, respectively, and processes the second symbol based on the values of the two parameters to obtain the fourth symbol.

For example, in order to enable the second node to determine which parameter corresponds to the obtained index, a specific indication field may be configured in advance for each parameter, one indication field corresponds to one parameter, and the second node may determine the type of parameter carried by the indication field according to the location of the indication field. For example, the indication field #1 is used to carry the value of the first parameter, the indication field #2 is used to carry the value of the second parameter, and the second node may take the content obtained on the indication field #1 as the value of the first parameter and the content obtained on the indication field #2 as the value of the second parameter.

Optionally, the first value of the first parameter belongs to a first value set, the first value of the second parameter belongs to a second value set, the first value set includes a plurality of values, the plurality of values are in one-to-one correspondence with a plurality of indexes, and similarly, the second value set also includes a plurality of values, and the plurality of values are in one-to-one correspondence with the plurality of indexes. For convenience of description, the correspondence between the plurality of values of the first value set and the plurality of indexes may be denoted as a first group of correspondence, the correspondence between the first value of the first parameter and the second index may be denoted as a second correspondence, the correspondence between the plurality of values of the second value set and the plurality of indexes may be denoted as a second group of correspondence, and the correspondence between the first value of the second parameter and the third index may be denoted as a third correspondence. And the second node determines a first value of a first parameter corresponding to the second index according to the second corresponding relation and the second index in the first group corresponding relation, and determines a first value of a second parameter corresponding to the fourth index according to the third corresponding relation and the fourth index in the second group corresponding relation.

The first set of correspondence relationships and the second set of correspondence relationships may be described in the form of tables and/or formulas, and the specific form is not limited in any way. The first set of correspondences and the second set of correspondences may be predefined or may be obtained by the second node from other nodes.

Table 8 shows the correspondence between the values of the second parameter and the indexes (i.e., the second set of correspondence), where b _i The i-th value of the second parameter is represented, i is an integer, and one value of the second parameter corresponds to one index. Regarding the correspondence between the plurality of values and the plurality of indexes of the first parameter, the description of table 1 may be referred to. The second set of values may be, for example, the result of [ b ] ₀ ，b ₁ ，b ₂ ，b ₃ ，b ₄ ，b ₅ ，b ₆ ，b ₇ ，b ₈ ，b ₉ ，b ₁₀ ，b ₁₁ ，b ₁₂ ，b ₁₃ ，b ₁₄ ，b ₁₅ ]The first value of the second parameter may be one of the second set of values.

TABLE 8

Index	0000	0001	0010	0011	0100	0101	0110	0111
									Second parameter	b ₀	b ₁	b ₂	b ₃	b ₄	b ₅	b ₆	b ₇
Index	1000	1001	1010	1011	1100	1101	1110	1111
									Second parameter	b ₈	b ₉	b ₁₀	b ₁₁	b ₁₂	b ₁₃	b ₁₄	b ₁₅

Optionally, the first value set may belong to a group of value sets (for convenience of distinction, denoted as a first group of value sets), where the first group of value sets includes a plurality of value sets, each value set includes a plurality of values, one value in one value set corresponds to one index, and indexes corresponding to values in each value set in any two value sets may be the same or different. The second value set may belong to another set of value sets (for convenience of distinction, denoted as a second set of value sets), where the second set of value sets includes a plurality of value sets, each value set includes a plurality of values, one value in one value set corresponds to one index, and indexes corresponding to the values in each of any two value sets may be the same or different. Similar to the description of the relationship between the first value set and the index in the method 200, the correspondence between the values in each value set and the indexes in the set of value sets of each parameter may be recorded as a set of correspondence, where the multiple value sets respectively have multiple sets of correspondence, and each set of correspondence in the multiple sets of correspondence may be described in the form of a table and/or a formula, and the specific form is not limited in any way.

In the case where there are multiple sets of correspondence relationships for each parameter, each set of correspondence relationships may be predefined or may be obtained by the second node from, for example, the first node.

In order to make the second node determine that the first value of the first parameter needs to be obtained by using the first set of correspondence relationships, and that the first value of the second parameter needs to be obtained by using the second set of correspondence relationships, the first node may send, to the second node, an index corresponding to the first set of correspondence relationships and an index corresponding to the second set of correspondence relationships, where the second node determines, according to the index corresponding to the first set of correspondence relationships, the first set of correspondence relationships corresponding to the index from the plurality of sets of correspondence relationships of the first parameter, determines the first value of the first parameter corresponding to the second index from the first set of correspondence relationships, and the second node determines, according to the index corresponding to the second set of correspondence relationships, the second set of correspondence relationships corresponding to the index from the plurality of sets of correspondence relationships of the second parameter, and determines the first value of the second parameter corresponding to the third index from the second set of correspondence relationships.

In the embodiment of the present application, the value of the first parameter may be associated with the link quality.

Optionally, the first value set belongs to a first group of value sets, and each value set in the first group of value sets corresponds to one link quality.

For a specific description of the relationship between the value of the first parameter and the link quality, reference may be made to the related description in the method 200, and for brevity, a description is omitted.

In this embodiment of the present application, an index corresponding to the first value of the first parameter may also be associated with the link quality.

Optionally, the second index corresponds to the link quality.

Alternatively, the CQI may be indicated by an index, and the CQI or the index of the CQI may be used as the index of the value of the first parameter.

For a specific description of the relationship between the first value of the first parameter and the link quality, reference may be made to the related description in the method 200, and for brevity, a detailed description will be omitted.

Case B2

Optionally, the second indication information is used for indicating the first value of the first parameter and the first value of the second parameter, and the second indication information includes a fifth index, where the fifth index corresponds to the first value of the first parameter and the first value of the second parameter; the method comprises the steps of,

The second node determines the first value of the first parameter and the first value of the second parameter according to the corresponding relation between the fifth index and the first value of the first parameter and the first value of the second parameter and the fifth index;

That is, in this case, one value of the first parameter and one value of the second parameter may be indicated by the same index (e.g., fifth index), so that the second node determines the values of the two parameters according to the index, and processes the second symbol based on the values of the two parameters to obtain the fourth symbol.

Optionally, the first value of the first parameter belongs to a first value set, the first value of the second parameter belongs to a second value set, the multiple values of the first value set are in one-to-one correspondence with the multiple indexes, and the multiple values of the second value set are in one-to-one correspondence with the multiple indexes, wherein the same index can correspond to one value of the first parameter and one value of the second parameter. Other descriptions about the first value set and the second value set may refer to the related descriptions of the case B1, which are not repeated.

Table 9 shows the correspondence between the index and the values of the first and second parameters, wherein a _i The ith value, b, representing the first parameter _i The ith value of the second parameter is represented, i being an integer. The ith value of the first parameter and the ith value of the second parameter simultaneously correspond to the ith index. The first set of values may be exemplified by [ a ] ₀ ，a ₁ ，a ₂ ，a ₃ ，a ₄ ，a ₅ ，a ₆ ，a ₇ ]The second set of values may be a set of values consisting of [ b ] ₀ ，b ₁ ，b ₂ ，b ₃ ，b ₄ ，b ₅ ，b ₆ ，b ₇ ]A first value of a first parameter and a second parameterThe first value of (c) may be two values corresponding to one index.

It should be understood that table 9 is only illustrative, and the correspondence between the values of the first parameter and the index and the correspondence between the values of the second parameter and the index may be described in two tables, which are not limited in any way.

In addition, when the values of the first parameter and the values of the second parameter are described in the same table, all the values of the two parameters may be understood as one value set. That is, optionally, the first value of the first parameter and the first value of the second parameter belong to a fourth value set, wherein the fourth value set comprises a plurality of values of the first parameter and a plurality of values of the second parameter. Illustratively, taking Table 9 as an example, the fourth set of values may be represented by [ a ] ₀ ，a ₁ ，a ₂ ，a ₃ ，a ₄ ，a ₅ ，a ₆ ，a ₇ ，b ₀ ，b ₁ ，b ₂ ，b ₃ ，b ₄ ，b ₅ ，b ₆ ，b ₇ ]A set of components.

TABLE 9

Index

000

001

010

011

100

101

110

111

First parameter

a ₀

a ₁

a ₂

a ₃

a ₄

a ₅

a ₆

a ₇

Second parameter

b ₀

b ₁

b ₂

b ₃

b ₄

b ₅

b ₆

b ₇

In the same way as in case B1, the value of the first parameter is associated with the link quality.

Optionally, the first value of the first parameter and the first value of the second parameter belong to a fourth value set, and the first value set to which the first value of the first parameter in the fourth value set belongs corresponds to the link quality.

In this embodiment, since the values of the two parameters may be indicated at the same time by the same index, and the value of the first parameter may be associated with the link quality, the index in which the value of the first parameter and the value of the second parameter are commonly associated with the link quality may also be associated.

Optionally, a fifth index, which corresponds to the first value of the first parameter and the first value of the second parameter together, corresponds to the link quality.

Illustratively, the link quality may be characterized by CQI. The fifth index may correspond to one CQI (for convenience of distinction, denoted as a fifth CQI), and the second node may determine the fifth index through the fifth CQI to determine the corresponding first value of the first parameter and the corresponding first value of the second parameter through the fifth index.

Alternatively, the CQI may be indicated by an index, and one CQI or an index of one CQI may be used as an index indicating one value of the first parameter and one value of the second parameter. For example, the index in table 10 may be CQI or an index of CQI.

Table 10

It should be understood that the sequence numbers of the above processes do not mean the order of execution, and the execution order of the processes should be determined by the functions and internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present application.

The communication method according to the embodiment of the present application is described in detail above with reference to fig. 1 to 7, and the apparatus according to the embodiment of the present application will be described in detail below with reference to fig. 8 and 10.

Fig. 8 shows a schematic structure of a device. The apparatus 800 may be a network device, a terminal device, a chip system, or a processor that supports the network device to implement the method, or a chip, a chip system, or a processor that supports the terminal device to implement the method. The device can be used for realizing the method described in the method embodiment, and can be particularly referred to the description in the method embodiment.

The apparatus 800 may comprise one or more processors 801, which processors 801 may also be referred to as processing units, may implement certain control functions. The processor 801 may be a general purpose processor or a special purpose processor, etc. For example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control devices (e.g., base station, baseband chip, terminal chip, DU or CU, etc.), execute software programs, and process data of the software programs.

In an alternative design, the processor 801 may also store instructions and/or data 803, where the instructions and/or data 803 may be executed by the processor to cause the apparatus 800 to perform the method described in the method embodiments above.

In another alternative design, the processor 801 may include a transceiver unit for implementing the receive and transmit functions. For example, the transceiver unit may be a transceiver circuit, or an interface circuit. The transceiver circuitry, interface or interface circuitry for implementing the receive and transmit functions may be separate or may be integrated. The transceiver circuit, interface or interface circuit may be used for reading and writing codes/data, or the transceiver circuit, interface or interface circuit may be used for transmitting or transferring signals.

In yet another possible design, apparatus 800 may include circuitry to implement the functions of transmitting or receiving or communicating in the foregoing method embodiments.

Optionally, the apparatus 800 may include one or more memories 802, on which instructions 804 may be stored, which may be executed on the processor, to cause the apparatus 800 to perform the methods described in the method embodiments above. Optionally, the memory may further store data. In the alternative, the processor may store instructions and/or data. The processor and the memory may be provided separately or may be integrated. For example, the correspondence described in the above method embodiments may be stored in a memory or in a processor.

Optionally, the apparatus 800 may further comprise a transceiver 805 and/or an antenna 806. The processor 801 may be referred to as a processing unit and controls the apparatus 800. The transceiver 805 may be referred to as a transceiver unit, a transceiver circuit, a transceiver, or the like, for implementing a transceiver function.

In one possible design, an apparatus 800 (e.g., an integrated circuit, a wireless device, a circuit module, or a terminal device, etc.) may include: a processor 801 and a transceiver 805.

In one possible design, the apparatus 800 may be configured to perform the various processes and steps corresponding to the first node in the method 200.

The processor 801 is configured to obtain a first value of a first parameter, where the first parameter represents a relationship between a first symbol and a constellation symbol corresponding to the first symbol;

the transceiver 805 is configured to send first indication information to a second node, where the first indication information is used to indicate a first value of the first parameter, and the second node is a next-hop node of the device;

transceiver 805 is configured to transmit the first symbol to the second node.

Therefore, in the apparatus provided in the embodiment of the present application, the apparatus obtains a first value of a first parameter for representing a relationship between a first symbol and a constellation symbol corresponding to the first symbol, and sends the first value of the first parameter to a second node through first indication information, where the second node may process, according to the first value of the first parameter, the first symbol received from the apparatus to obtain a third symbol, so as to obtain accurate soft information, and enable the second node to obtain an accurate decoding result according to the soft information, so as to improve decoding performance, thereby improving data transmission performance.

Therefore, the device provided by the embodiment of the application indicates the first value of the first parameter through the first index, so that signaling overhead can be reduced.

Optionally, the first value of the first parameter is related to link quality.

Optionally, the first index corresponds to the link quality.

Therefore, in the case that the value of the first parameter is indicated by the index, the device provided by the embodiment of the application can enable the values in different value sets to adopt the same index by establishing the corresponding relation between the value set of the first parameter and the link quality, so that each index occupies fewer bits, and signaling overhead caused by transmitting the index is reduced.

In another possible design, the apparatus 800 may be configured to perform the respective processes and steps corresponding to the second node in the method 200.

Transceiver 805 is configured to receive a first symbol from a first node, the first node being a last hop node of the device;

the transceiver 805 is configured to receive first indication information from the first node, where the first indication information is configured to indicate a first value of a first parameter, and the first parameter represents a relationship between the first symbol and a constellation symbol corresponding to the first symbol;

the processor 801 is configured to process the first symbol according to the first value of the first parameter, and obtain a third symbol.

Therefore, in the device provided by the embodiment of the application, by receiving the first indication information sent by the first node and used for indicating the first value of the first parameter, the device can process the first symbol received from the first node according to the first value of the first parameter to obtain the third symbol, so that accurate soft information can be obtained, and the device can obtain an accurate decoding result according to the soft information, so as to improve the decoding performance, and further improve the data transmission performance.

the processor 801 is specifically configured to:

and determining the first value of the first parameter according to the corresponding relation between the first value of the first parameter and the first index.

Optionally, the first value of the first parameter is related to link quality.

Optionally, the first index corresponds to the link quality.

In addition, the device can determine the value of the first parameter in a large range (for example, the range of 0-1) based on the link quality, and the value of the first parameter can be determined in the first value set, so that the range for determining the value of the first parameter is reduced, and the efficiency of the device for determining the value of the first parameter is improved.

In another possible design, the apparatus 800 may be configured to perform the respective processes and steps corresponding to the first node in the method 300.

The processor 801 is configured to obtain a first value of a first parameter and a first value of a second parameter, where the first parameter represents a relationship between a first symbol and a constellation symbol corresponding to the first symbol, and the second parameter represents a relationship between power of the constellation symbol and power of the first symbol;

the transceiver 805 is configured to send second indication information to a second node, where the second node is a next hop node of the apparatus, and the second indication information is configured to indicate one of the following: a first value of the first parameter and a first value of the second parameter, or a first value of a third parameter, the first value of the third parameter being related to the first value of the first parameter and the first value of the second parameter;

the transceiver 805 is configured to send a second symbol to the second node, where the second symbol is a symbol obtained by processing the first symbol with the first value of the second parameter.

Therefore, in the apparatus provided in this embodiment, the apparatus obtains a first value of a first parameter and a first value of a second parameter, where the first parameter represents a relationship between a first symbol and a constellation symbol corresponding to the first symbol, and the second parameter represents a relationship between power of the constellation symbol and power of the first symbol, and sends second indication information to a second node to indicate the first value of the first parameter and the first value of the second parameter, or indicates the first value of a third parameter related to the first value of the first parameter and the first value of the second parameter, where the second node may process, according to the second indication information, the second symbol received from the apparatus to obtain a fourth symbol, so that accurate soft information may be obtained, and the second node may obtain an accurate decoding result according to the soft information, so as to improve decoding performance, and thus improve data transmission performance.

Therefore, the apparatus provided in the embodiments of the present application indicates the first value of the first parameter and the first value of the second parameter through the index (for example, the second index and the third index, or the fifth index), or indicates the first value of the third parameter through the index (for example, the fourth index), so as to reduce signaling overhead.

Optionally, the first value of the first parameter is related to link quality.

Therefore, in the case that the values of the parameters (for example, the values of the first parameter and the values of the second parameter, or the values of the third parameter) are indicated by the indexes, the device provided by the embodiment of the application can enable the values in different value sets to adopt the same indexes by establishing the corresponding relation between the value set (for example, the first value set, or the third value set) of the parameters and the link quality, so that each index occupies fewer bits, and signaling overhead caused by transmitting the indexes is reduced.

In another possible design, the apparatus 800 may be configured to perform the respective processes and steps corresponding to the second node in the method 300.

The transceiver 805 is configured to receive a second symbol from a first node, where the first node is a last hop node of the apparatus, the second symbol is a symbol obtained by processing a first value of a second parameter of the first symbol, and the second parameter represents a relationship between power of a constellation symbol corresponding to the first symbol and power of the first symbol;

The transceiver 805 is configured to receive second indication information from the first node, where the second indication information is configured to indicate one of: a first value of a first parameter and a first value of the second parameter, or a first value of a third parameter, the first value of the third parameter being related to the first value of the first parameter and the first value of the second parameter, the first parameter representing a relationship of the first symbol and the constellation symbol;

the processor 801 is configured to process the second symbol according to the second indication information, to obtain a fourth symbol.

Therefore, in the apparatus provided in this embodiment of the present application, the apparatus receives, by receiving, from a first node, second indication information for indicating a first value of a first parameter and a first value of a second parameter, or receives, from the first node, second indication information for indicating a first value of a third parameter related to the first value of the first parameter and the first value of the second parameter, where the first parameter indicates a relationship between a first symbol and a constellation symbol corresponding to the first symbol, and the second parameter indicates a relationship between power of the constellation symbol and power of the first symbol, and may process, according to the second indication information, the second symbol received from the first node to obtain a fourth symbol, so that accurate soft information may be obtained, so that the apparatus obtains an accurate decoding result according to the soft information, so as to improve decoding performance, and thereby improve data transmission performance.

the processor 801 is specifically configured to:

determining a first value of the first parameter according to the corresponding relation between the first value of the first parameter and the second index, and determining the first value of the second parameter according to the corresponding relation between the first value of the second parameter and the third index;

processing the second symbol according to the first value of the first parameter and the first value of the second parameter to obtain a fourth symbol; or alternatively, the first and second heat exchangers may be,

the processor 801 is specifically configured to:

Determining the first value of the first parameter and the first value of the second parameter according to the fifth index and the corresponding relation between the fifth index and the first value of the first parameter and the first value of the second parameter;

the processor 801 is specifically configured to:

determining a first value of the third parameter according to the corresponding relation between the first value of the third parameter and the fourth index;

and processing the second symbol according to the first value of the third parameter to obtain a fourth symbol.

Therefore, the apparatus provided in the embodiments of the present application may reduce signaling overhead by indicating the first value of the first parameter and the first value of the second parameter by an index (for example, the second index and the third index, or the fifth index), or by indicating the first value of the third parameter by an index (for example, the fourth index).

Optionally, the first value of the first parameter is related to link quality.

The processors and transceivers described herein may be implemented on integrated circuits (integrated circuit, ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (application specific integrated circuit, ASIC), printed circuit boards (printed circuit board, PCB), electronic devices, and the like. The processor and transceiver may also be fabricated using a variety of IC process technologies such as complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (Bipolar Junction Transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The apparatus described in the above embodiment may be a network device or a terminal device, but the scope of the apparatus described in the present application is not limited thereto, and the structure of the apparatus may not be limited by fig. 8. The apparatus may be a stand-alone device or may be part of a larger device. For example, the device may be:

(1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem;

(2) Having a set of one or more ICs, which may optionally also include storage means for storing data and/or instructions;

(3) An ASIC, such as a modem (MSM);

(4) Modules that may be embedded within other devices;

(5) Receivers, terminals, smart terminals, cellular telephones, wireless devices, handsets, mobile units, vehicle devices, network devices, cloud devices, artificial intelligence devices, etc.;

(6) Others, and so on.

Fig. 9 provides a schematic structural diagram of a terminal device. The terminal device may be adapted to be used in the scenario shown in fig. 1 or fig. 2. For convenience of explanation, fig. 9 shows only major components of the terminal device. As shown in fig. 9, the terminal device 900 includes a processor, a memory, a control circuit, an antenna, and an input-output device. The processor is mainly used for processing the communication protocol and the communication data, controlling the whole terminal, executing the software program and processing the data of the software program. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user.

When the terminal equipment is started, the processor can read the software program in the storage unit, analyze and execute the instructions of the software program and process the data of the software program. When data is required to be transmitted wirelessly, the processor carries out baseband processing on the data to be transmitted and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit processes the baseband signal to obtain a radio frequency signal and transmits the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is transmitted to the terminal device, the radio frequency circuit receives a radio frequency signal through the antenna, the radio frequency signal is further converted into a baseband signal, and the baseband signal is output to the processor, and the processor converts the baseband signal into data and processes the data.

For ease of illustration, fig. 9 shows only one memory and processor. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or storage device, etc., and embodiments of the present invention are not limited in this respect.

As an alternative implementation manner, the processor may include a baseband processor, which is mainly used for processing the communication protocol and the communication data, and a central processor, which is mainly used for controlling the whole terminal device, executing a software program, and processing the data of the software program. The processor in fig. 9 integrates the functions of a baseband processor and a central processing unit, and those skilled in the art will appreciate that the baseband processor and the central processing unit may be separate processors, interconnected by bus technology, etc. Those skilled in the art will appreciate that the terminal device may include multiple baseband processors to accommodate different network formats, and that the terminal device may include multiple central processors to enhance its processing capabilities, and that the various components of the terminal device may be connected by various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, which is executed by the processor to realize the baseband processing function.

In one example, the antenna and the control circuit having the transmitting and receiving function may be regarded as the transmitting and receiving unit 911 of the terminal device 900, and the processor having the processing function may be regarded as the processing unit 912 of the terminal device 900. As shown in fig. 9, the terminal device 900 includes a transceiving unit 911 and a processing unit 912. The transceiver unit may also be referred to as a transceiver, transceiver device, etc. Alternatively, a device for implementing a receiving function in the transceiver unit 911 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiver unit 911 may be regarded as a transmitting unit, i.e., the transceiver unit 911 includes a receiving unit and a transmitting unit. For example, the receiving unit may also be referred to as a receiver, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, a transmitting circuit, etc. Alternatively, the receiving unit and the transmitting unit may be integrated together, or may be a plurality of independent units. The receiving unit and the transmitting unit may be located in one geographical location or may be distributed among a plurality of geographical locations.

As shown in fig. 10, yet another embodiment of the present application provides an apparatus 1000. The device may be a terminal or a component of a terminal (e.g., an integrated circuit, a chip, etc.). The apparatus may also be a network device or a component of a network device (e.g., an integrated circuit, chip, etc.). The device may also be other communication modules, for implementing the method in the method embodiment of the present application. The apparatus 1000 may include a processing module 1002 (processing unit). Optionally, a transceiver module 1001 (transceiver unit) and a storage module 1003 (storage unit) may be further included.

In one possible design, one or more modules as in FIG. 10 may be implemented by one or more processors or by one or more processors and memory; or by one or more processors and transceivers; or by one or more processors, memories, and transceivers, to which embodiments of the present application are not limited. The processor, the memory and the transceiver can be arranged separately or integrated.

The device has the function of realizing the terminal equipment described in the embodiment of the application, for example, the device comprises a module or a unit or a means (means) corresponding to the steps of the terminal equipment described in the embodiment of the application, and the function or the unit or the means (means) can be realized by software, or realized by hardware, or realized by executing corresponding software by hardware, or realized by a mode of combining software and hardware. Reference is further made in detail to the corresponding description in the foregoing corresponding method embodiments.

Or the apparatus has a function of implementing the network device described in the embodiment of the present application, for example, the apparatus includes a module or a unit or means (means) corresponding to the steps involved in the network device described in the embodiment of the present application when the network device executes the network device, where the function or the unit or means (means) may be implemented by software, or implemented by hardware, or implemented by executing corresponding software by hardware, or may be implemented by a combination of software and hardware. Reference is further made in detail to the corresponding description in the foregoing corresponding method embodiments.

Alternatively, each module in the apparatus 1000 in the embodiments of the present application may be used to perform the methods described in fig. 4 to 7 in the embodiments of the present application.

In one possible design, an apparatus 1000 (e.g., an integrated circuit, a wireless device, a circuit module, or a terminal device, etc.) may include: a processing module 1002 and a transceiver module 1001.

In one possible design, the apparatus 1000 may be configured to perform the respective processes and steps corresponding to the first node in the method 200 described above, corresponding to the methods described in fig. 4 and 5.

The processing module 1002 is configured to obtain a first value of a first parameter, where the first parameter represents a relationship between a first symbol and a constellation symbol corresponding to the first symbol;

the transceiver module 1001 is configured to send first indication information to a second node, where the first indication information is used to indicate a first value of the first parameter, and the second node is a next hop node of the device;

the transceiver module 1001 is configured to send the first symbol to the second node.

Optionally, the first value of the first parameter is related to link quality.

Optionally, the first index corresponds to the link quality.

In another possible design, the apparatus 1000 may be configured to perform the respective processes and steps corresponding to the second node in the method 200 described above, corresponding to the methods described in fig. 4 and 5.

The transceiver module 1001 is configured to receive a first symbol from a first node, where the first node is a last hop node of the device;

the transceiver module 1001 is configured to receive first indication information from the first node, where the first indication information is used to indicate a first value of a first parameter, and the first parameter represents a relationship between the first symbol and a constellation symbol corresponding to the first symbol;

the processing module 1002 is configured to process the first symbol according to the first value of the first parameter, to obtain a third symbol.

the processing module 1002 is specifically configured to:

Optionally, the first value of the first parameter is related to link quality.

Optionally, the first index corresponds to the link quality.

In another possible design, the apparatus 1000 may be configured to perform the respective processes and steps corresponding to the first node in the method 300 described above, corresponding to the methods described in fig. 6 and fig. 7.

The processing module 1002 is configured to obtain a first value of a first parameter and a first value of a second parameter, where the first parameter represents a relationship between a first symbol and a constellation symbol corresponding to the first symbol, and the second parameter represents a relationship between power of the constellation symbol and power of the first symbol;

the transceiver module 1001 is configured to send second instruction information to a second node, where the second node is a next hop node of the device, and the second instruction information is used to indicate one of the following: a first value of the first parameter and a first value of the second parameter, or a first value of a third parameter, the first value of the third parameter being related to the first value of the first parameter and the first value of the second parameter;

the transceiver module 1001 is configured to send a second symbol to the second node, where the second symbol is a symbol obtained by processing the first symbol with the first value of the second parameter.

Optionally, the first value of the first parameter is related to link quality.

In another possible design, the apparatus 1000 may be configured to perform the respective processes and steps corresponding to the second node in the method 300 described above, corresponding to the methods described in fig. 6 and fig. 7.

The transceiver module 1001 is configured to receive a second symbol from a first node, where the first node is a last hop node of the device, the second symbol is a symbol obtained by processing a first value of a second parameter of the first symbol, and the second parameter represents a relationship between power of a constellation symbol corresponding to the first symbol and power of the first symbol;

The transceiver module 1001 is configured to receive second indication information from the first node, where the second indication information is used to indicate one of the following: a first value of a first parameter and a first value of the second parameter, or a first value of a third parameter, the first value of the third parameter being related to the first value of the first parameter and the first value of the second parameter, the first parameter representing a relationship of the first symbol and the constellation symbol;

the processing module 1002 is configured to process the second symbol according to the second indication information, to obtain a fourth symbol.

the processing module 1002 is specifically configured to:

Optionally, the first value of the first parameter is related to link quality.

It should be appreciated that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The present application also provides a computer readable medium having stored thereon a computer program which, when executed by a computer, performs the functions of any of the method embodiments described above.

The present application also provides a computer program product which, when executed by a computer, implements the functions of any of the method embodiments described above.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more 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 high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

It should be appreciated that reference throughout this specification to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, various embodiments are not necessarily referring to the same embodiments throughout the specification. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

It should also be understood that, in this application, "when …," "if," and "if" all refer to that the UE or the base station will make a corresponding process under some objective condition, and are not limited in time, nor do they require that the UE or the base station must have a judgment action when it is implemented, nor are they meant to have other limitations.

Elements referred to in the singular are intended to be used in this application to mean "one or more" rather than "one and only one" unless specifically indicated. The term "plurality" as referred to in this application is intended to mean "two or more".

In addition, the terms "system" and "network" are often used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone.

The term "at least one of … …" or "at least one of … …" herein means all or any combination of the listed items, e.g., "at least one of A, B and C," may mean: there are six cases where A alone, B alone, C alone, both A and B, both B and C, and both A, B and C.

It should be understood that in embodiments of the present application, "B corresponding to a" means that B is associated with a, from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

The correspondence relationship shown in each table in the present application may be configured or predefined. The values of the information in each table are merely examples, and may be configured as other values, which are not limited in this application. In the case of the correspondence between the configuration information and each parameter, it is not necessarily required to configure all the correspondence shown in each table. For example, in the table in the present application, the correspondence shown by some rows may not be configured. For another example, appropriate morphing adjustments, e.g., splitting, merging, etc., may be made based on the tables described above. The names of the parameters shown in the tables may be other names which are understandable by the device, and the values or representations of the parameters may be other values or representations which are understandable by the device. When the tables are implemented, other data structures may be used, for example, an array, a queue, a container, a stack, a linear table, a pointer, a linked list, a tree, a graph, a structure, a class, a heap, a hash table, or a hash table.

Predefined in this application may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-firing.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication, the method comprising:

the method comprises the steps that a first node obtains a first value of a first parameter, wherein the first parameter represents a relation between a first soft symbol and constellation symbols corresponding to the first soft symbol;

the first node sends the first soft symbol to the second node.

2. The method of claim 1, wherein the first indication information comprises a first index, the first index corresponding to a first value of the first parameter.

3. The method of claim 2, wherein the first value of the first parameter relates to link quality.

4. A method according to claim 3, wherein the first index corresponds to the link quality.

5. The method according to claim 3 or 4, wherein the first value of the first parameter belongs to a first set of values, the first set of values corresponding to the link quality.

6. A method of communication, the method comprising:

a second node receives a first soft symbol from a first node, wherein the first node is a last hop node of the second node;

the second node receives first indication information from the first node, wherein the first indication information is used for indicating a first value of a first parameter, and the first parameter represents the relation between the first soft symbol and constellation symbols corresponding to the first soft symbol;

and the second node processes the first soft symbol according to the first value of the first parameter to obtain a third symbol.

7. The method of claim 6, wherein the first indication information comprises a first index, the first index corresponding to a first value of the first parameter; the method comprises the steps of,

the method further comprises the steps of:

8. The method of claim 7, wherein the first value of the first parameter relates to link quality.

9. The method of claim 8, wherein the first index corresponds to the link quality.

10. The method according to claim 8 or 9, wherein the first value of the first parameter belongs to a first set of values, the first set of values corresponding to the link quality.

11. A method of communication, the method comprising:

a first node obtains a first value of a first parameter and a first value of a second parameter, wherein the first parameter represents a relation between a first soft symbol and a constellation symbol corresponding to the first soft symbol, and the second parameter represents a relation between power of the constellation symbol and power of the first soft symbol;

the first node sends second indicating information to a second node, wherein the second node is a next hop node of the first node, the second indicating information is used for indicating a first value of a third parameter, and the first value of the third parameter is related to the first value of the first parameter and the first value of the second parameter;

And the first node sends a second soft symbol to the second node, wherein the second soft symbol is a symbol obtained by processing the first soft symbol by using the first value of the second parameter.

12. The method of claim 11, wherein the second indication information includes a fourth index, the fourth index corresponding to the first value of the third parameter.

13. The method of claim 12, wherein the first value of the first parameter relates to link quality.

14. The method of claim 13, wherein the fourth index corresponds to the link quality.

15. The method according to claim 13 or 14, wherein the first value of the third parameter belongs to a third set of values, the third set of values corresponding to the link quality.

16. A method of communication, the method comprising:

a second node receives a second soft symbol from a first node, wherein the first node is a last hop node of the second node, the second soft symbol is a symbol obtained by processing a first value of a second parameter of a first soft symbol, and the second parameter represents a relation between power of a constellation symbol corresponding to the first soft symbol and power of the first soft symbol;

The second node receives second indication information from the first node, wherein the second indication information is used for indicating a first value of a third parameter, the first value of the third parameter is related to the first value of the first parameter and the first value of the second parameter, and the first parameter represents the relation between the first soft symbol and the constellation symbol;

and the second node processes the second soft symbol according to the second indication information to obtain a fourth symbol.

17. The method of claim 16, wherein the second indication information includes a fourth index, the fourth index corresponding to the first value of the third parameter; the method comprises the steps of,

the second node processes the second soft symbol according to the second indication information to obtain a fourth symbol, including:

and the second node processes the second soft symbol according to the first value of the third parameter to obtain a fourth symbol.

18. The method of claim 17, wherein the first value of the first parameter relates to link quality.

19. The method of claim 18, wherein the fourth index corresponds to the link quality.

20. The method according to claim 18 or 19, wherein the first value of the third parameter belongs to a third set of values, the third set of values corresponding to the link quality.

21. An apparatus, comprising: a processor coupled to a memory for storing a program or instructions that, when executed by the processor, cause the apparatus to perform the method of any one of claims 1 to 5, or 11 to 15.

22. An apparatus, comprising: a processor coupled to a memory for storing a program or instructions that, when executed by the processor, cause the apparatus to perform the method of any one of claims 6 to 10, or 16 to 20.

23. A storage medium having stored thereon a computer program or instructions which, when executed, cause a computer to perform the method of any one of claims 1 to 5, or 6 to 10, or 11 to 15, or 16 to 20.

24. A communication system, comprising:

the apparatus of claim 21 and the apparatus of claim 22.