CN118104172A

CN118104172A - Communication method, device and storage medium

Info

Publication number: CN118104172A
Application number: CN202280003659.5A
Authority: CN
Inventors: 高雪媛
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2024-05-28
Also published as: WO2024065231A1

Abstract

The present disclosure relates to a communication method, apparatus, and storage medium. The communication method is applied to the network equipment and comprises the following steps: receiving first information sent by a terminal, wherein the first information is used for indicating the maximum transmission layer number supported by the terminal for uplink transmission and the number of codewords corresponding to the transmission layer number; and configuring a codeword-layer mapping scheme used for uplink transmission for the terminal based on the first information, wherein the codeword-layer mapping scheme characterizes the mapping relationship between the codeword and a transmission layer. The method and the device provide an adaptation scheme for the transmission layer expansion of the uplink transmission of the terminal.

Description

Communication method, device and storage medium

Technical Field

The disclosure relates to the field of communication technologies, and in particular, to a communication method, a device and a storage medium.

Background

Currently, the terminal supports uplink transmission with a maximum of 4 layers of transmission streams, and downlink transmission can support a maximum of 8 layers.

In the related art, it is proposed to perform uplink enhancement and enhance the number of transmitting antennas to at most 8 antennas to support a higher uplink transmission rate comparable to that of the downlink.

In general, unlike a single layer mapping scheme in which a terminal performs uplink transmission through a maximum of 4 layers, there are often multiple layer mapping schemes that a terminal may support in uplink transmission through a maximum of 4 layers or a maximum of 8 layers.

On the basis, how to adapt between the terminal and various layer mapping schemes so that the terminal with different layer mapping capability can perform uplink transmission according to the layer mapping schemes supported by the terminal is a problem to be solved at present.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a communication method, apparatus, and storage medium.

According to a first aspect of embodiments of the present disclosure, there is provided a communication method, applied to a network device, including:

Receiving first information sent by a terminal, wherein the first information is used for indicating the maximum transmission layer number supported by the terminal for uplink transmission and the number of codewords corresponding to the transmission layer number; and configuring a codeword-layer mapping scheme used for uplink transmission for the terminal based on the first information, wherein the codeword-layer mapping scheme characterizes the mapping relationship between the codeword and a transmission layer.

According to a second aspect of the embodiments of the present disclosure, there is provided a communication method, applied to a terminal, including:

And sending first information to network equipment, wherein the first information is used for indicating the maximum transmission layer number supported by the terminal for uplink transmission and the number of code words corresponding to the transmission layer number, and is used for indicating the network equipment to configure a code word-layer mapping scheme used for uplink transmission for the terminal based on the first information, and the code word-layer mapping scheme represents the mapping relation between the code words and the transmission layer.

According to a third aspect of embodiments of the present disclosure, there is provided a communication apparatus applied to a network device, including:

The receiving unit is used for receiving first information sent by the terminal, wherein the first information is used for indicating the maximum transmission layer number supported by the terminal for uplink transmission and the number of codewords corresponding to the transmission layer number; and the processing unit is used for configuring a codeword-layer mapping scheme used for uplink transmission for the terminal based on the first information, wherein the codeword-layer mapping scheme represents the mapping relationship between the codeword and a transmission layer.

According to a fourth aspect of embodiments of the present disclosure, there is provided a communication apparatus, applied to a terminal, including:

The sending unit is used for sending first information to the network equipment, the first information is used for indicating the maximum transmission layer number supported by the terminal for uplink transmission and the number of code words corresponding to the transmission layer number, the sending unit is used for indicating the network equipment to configure a code word-layer mapping scheme used for uplink transmission for the terminal based on the first information, and the code word-layer mapping scheme represents the mapping relation between the code words and the transmission layer.

According to a fifth aspect of embodiments of the present disclosure, there is provided a communication apparatus, applied to a network device, including:

A processor;

A memory for storing processor-executable instructions;

wherein the processor is configured to: performing the method of any of the first aspects.

According to a sixth aspect of embodiments of the present disclosure, there is provided a communication apparatus, applied to a terminal, including:

A processor;

A memory for storing processor-executable instructions;

wherein the processor is configured to: the method of any of the second aspects is performed.

According to a seventh aspect of embodiments of the present disclosure, there is provided a storage medium having instructions stored therein, which when executed by a processor of a network device, enable the network device to perform the method of any one of the first aspects.

According to an eighth aspect of embodiments of the present disclosure, there is provided a storage medium having instructions stored therein, which when executed by a processor of a terminal, enable the terminal to perform the method of any one of the second aspects.

According to a ninth aspect of embodiments of the present disclosure, there is provided a non-transitory computer readable storage medium, which when executed by a processor of a network device, causes the network device to perform the method of any one of the first aspects.

According to a tenth aspect of embodiments of the present disclosure, there is provided a non-transitory computer readable storage medium, which when executed by a processor of a terminal, enables the terminal to perform the method of any one of the second aspects.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: the terminal reports the maximum transmission layer number supported by the terminal for uplink transmission and the number of codewords corresponding to the transmission layer number to the network equipment, so that the network equipment configures a codeword-to-layer mapping scheme used for uplink transmission for the terminal according to the layer mapping capability of the terminal. Compared with the mode that the terminal performs layer mapping by using a single code word to layer mapping scheme, the method provides a compatible adaptive scheme for different types of terminals supporting one or more, same or different code word to layer mapping schemes, and can meet the requirement of expanding the transmission layer number of the terminal.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram of a wireless communication system.

Fig. 2 is a schematic diagram of a mapping relationship between a codeword and a transmission layer when a terminal performs uplink transmission through a maximum 4 layers in the related art.

Fig. 3 is a diagram illustrating a mapping relationship between a codeword and a transport layer when a terminal performs maximum 8-layer uplink transmission through a single codeword according to an exemplary embodiment.

Fig. 4 is a schematic diagram showing a mapping relationship between a codeword and a transport layer when a terminal performs maximum 8-layer uplink transmission through maximum two codewords according to an exemplary embodiment.

Fig. 5 is a flow chart illustrating a method of communication according to an exemplary embodiment.

Fig. 6 is a flow chart illustrating another communication method according to an exemplary embodiment.

Fig. 7 is a flow chart illustrating yet another communication method according to an exemplary embodiment.

Fig. 8 is a flow chart illustrating a method of communication according to an exemplary embodiment.

Fig. 9 is a block diagram of a communication device according to an exemplary embodiment.

Fig. 10 is a block diagram of a communication device, according to an example embodiment.

Fig. 11 is a block diagram illustrating an apparatus for communication according to an example embodiment.

Fig. 12 is a block diagram illustrating an apparatus for communication according to an example embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure.

The communication method provided by the embodiment of the disclosure can be applied to the wireless communication system shown in fig. 1. Referring to fig. 1, the wireless communication system includes a network device and a terminal. The terminal is connected with the network equipment through wireless resources and performs data transmission.

It will be appreciated that the wireless communication system shown in fig. 1 is only schematically illustrated, and that other network devices may be included in the wireless communication system, for example, a core network device, a wireless relay device, a wireless backhaul device, etc., which are not shown in fig. 1. The number of network devices and the number of terminals included in the wireless communication system are not limited in the embodiments of the present disclosure.

It is further understood that the wireless communication system of the disclosed embodiments is a network that provides wireless communication functionality. The wireless communication system may employ different communication techniques such as code division Multiple access (code division Multiple access, CDMA), wideband code division Multiple access (wideband code division Multiple access, WCDMA), time division Multiple access (time division Multiple access, TDMA), frequency division Multiple access (frequency division Multiple access, FDMA), orthogonal frequency division Multiple access (orthogonal frequency-division Multiple access, OFDMA), single carrier frequency division Multiple access (SINGLE CARRIER FDMA, SC-FDMA), carrier sense Multiple access/collision avoidance (CARRIER SENSE Multiple ACCESS WITH CollisionAvoidance). Networks may be classified into 2G (english: generation) networks, 3G networks, 4G networks, or future evolution networks, such as 5G networks, according to factors such as capacity, rate, delay, etc., and the 5G networks may also be referred to as New Radio (NR). For convenience of description, the present disclosure will sometimes refer to a wireless communication network simply as a network.

Further, the network devices referred to in this disclosure may also be referred to as radio access network devices. The radio access network device may be: a base station, an evolved node B (bs), a home base station, an Access Point (AP) in a WIFI (WIRELESS FIDELITY) system, a wireless relay node, a wireless backhaul node, a transmission point (transmission point, TP), or a transmission reception point (transmission andreception point, TRP), etc., or may be a gNB in an NR system, or may also be a component or a part of a device that forms a base station, etc. It should be understood that in the embodiments of the present disclosure, the specific technology and specific device configuration adopted by the network device are not limited. In the present disclosure, a network device may provide communication coverage for a particular geographic area and may communicate with terminals located within that coverage area (cell). In addition, in the case of a vehicle networking (V2X) communication system, the network device may also be an in-vehicle device.

Further, a Terminal referred to in the present disclosure may also be referred to as a Terminal device, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), or the like, and may be a device that provides voice and/or data connectivity to a User, for example, a handheld device, an in-vehicle device, or the like that has a wireless connection function. Currently, some examples of terminals are: a smart Phone (Mobile Phone), a customer premise equipment (Customer Premise Equipment, CPE), a pocket computer (Pocket Personal Computer, PPC), a palm computer, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a notebook computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, in the case of a vehicle networking (V2X) communication system, the terminal device may also be an in-vehicle device. It should be understood that the embodiments of the present disclosure are not limited to the specific technology and specific device configuration adopted by the terminal.

Currently, the terminal supports uplink transmission with a maximum of 4 layers of transmission streams, and downlink transmission can support a maximum of 8 layers. Wherein, for maximum 8-layer downlink transmission, the mapping between codewords and layers is shown in table 1 below.

TABLE 1

In table 1, x ⁽⁰⁾ (i) to x ⁽⁷⁾ (i) are used to identify 8 different transport layers, and the mapping relationship between codewords and transport layers can be passedAnd (3) representing. Wherein,AndFor identifying two different code words, n0 representing the code wordThe number of transport layers constituting the map, n1 representing the codewordThe number of transport layers constituting the map. For example, toFor example, code wordsMapping with 3 transmission layers, code wordAnd 4 transport layers. In the related art, it is proposed to perform uplink enhancement and enhance the number of transmitting antennas to at most 8 antennas to support a higher uplink transmission rate comparable to that of the downlink.

In general, unlike a single layer mapping scheme in which a terminal performs uplink transmission through a maximum of 4 layers, there are often multiple layer mapping schemes that a terminal may support in uplink transmission through a maximum of 4 layers or a maximum of 8 layers. For ease of understanding, the following describes an exemplary possible layer mapping scheme for uplink transmission by the terminal through the maximum layer 4 or the maximum layer 8. Fig. 2 is a schematic diagram of a mapping relationship between a codeword and a transmission layer when a terminal performs uplink transmission through a maximum 4 layers in the related art. Fig. 3 is a diagram illustrating a mapping relationship between a codeword and a transport layer when a terminal performs maximum 8-layer uplink transmission through a single codeword according to an exemplary embodiment. Fig. 4 is a schematic diagram showing a mapping relationship between a codeword and a transport layer when a terminal performs maximum 8-layer uplink transmission through maximum two codewords according to an exemplary embodiment. Wherein, as shown in fig. 2 to 4, RANK number characterizes the number of transmission layers, CW0 and CW1 are used to identify two different codewords. When the terminal performs uplink transmission with the maximum layer 8, the terminal may perform uplink transmission with a single codeword or a maximum of two codewords. In addition, when the terminal performs uplink transmission with maximum 8-layer maximum two codes, more flexible mapping is supported, namely the number of layers corresponding to the two codes is not limited, and the mapping is determined according to the actual channel condition. For example, when the terminal transmits in 6 layers, one codeword corresponds to 4 layers of transmission layers and the other codeword corresponds to 2 layers of transmission layers. It can be seen that there are a variety of codeword-to-layer mapping schemes that a terminal can support for uplink transmissions over a maximum of 4 layers or a maximum of 8 layers. Also, a terminal may often support multiple mapping schemes simultaneously. On the basis, how to adapt between the terminal and various layer mapping schemes so that the terminal with different layer mapping capability can perform uplink transmission according to the layer mapping schemes supported by the terminal is a problem to be solved at present.

In view of this, the present disclosure provides a communication method, where a network device may receive corresponding information sent by a terminal, so as to obtain a maximum number of transmission layers supported by the terminal for uplink transmission and a number of codewords corresponding to the number of transmission layers. Based on the above, the network device can obtain one or more codeword-to-layer mapping schemes supported by the terminal for uplink transmission according to the obtained maximum transmission layer number and the number of codewords corresponding to the transmission layer number, and further configure the codeword-to-layer mapping scheme used for uplink transmission for the terminal according to the codeword-to-layer mapping scheme supported by the terminal for uplink transmission. For terminals with different codeword-to-layer mapping capability, the network device can configure the codeword-to-layer mapping mode according to the mapping capability of the network device, so that an adaptation scheme is provided for the terminals with different codeword-to-layer mapping capability, and the problem that the uplink transmission layer number is expanded and the network device and the terminals cannot be adapted is solved.

The following disclosure is for convenience of description, and information indicating the number of layers supported and the number of codewords corresponding to the number of layers when the terminal performs uplink transmission is referred to as first information.

Fig. 5 is a flowchart illustrating a communication method according to an exemplary embodiment, as shown in fig. 5, for use in a network device, comprising the following steps.

In step S11, first information transmitted by the terminal is received.

In the embodiment of the disclosure, the first information is used for indicating a maximum transmission layer number supported by the terminal for uplink transmission and a number of codewords corresponding to the transmission layer number. The first information may be carried in at least one of radio resource control (Radio Resource Control, RRC) signaling, medium access control (Medium Access Control Control Element, MAC CE) signaling, and uplink control indication signaling (Uplink Control Information, UCI), for example.

In step S12, a codeword-to-layer mapping scheme used for uplink transmission is configured for the terminal based on the first information.

In an embodiment of the present disclosure, the codeword-to-layer mapping scheme characterizes a mapping relationship between codewords and layers. According to the communication method provided by the embodiment of the disclosure, the network equipment can deduce the actual layer mapping capability of the terminal according to the acquired information, and configure a layer codeword to layer mapping scheme matched with the layer mapping capability for the terminal.

In the embodiment of the disclosure, the first information is used for reflecting a layer codeword to layer mapping scheme supported by the terminal during uplink transmission.

In an embodiment, the first information may directly include specific information required, for example, a maximum number of transmission layers supported by the terminal for uplink transmission, and a number of codewords corresponding to the number of transmission layers. For ease of understanding, the following lists possible cases when the first information contains the maximum number of transmission layers and the number of codewords.

For example, as for the first information, the information contained therein includes the following four possible cases. In case 1, the maximum number of transmission layers supported by the terminal for uplink transmission is 4, and the maximum number of codewords corresponding to each transmission layer is 1. In case 2, the maximum number of transmission layers supported by the terminal for uplink transmission is 8, and the maximum number of codewords corresponding to each transmission layer is 1. In case 3, the maximum number of transmission layers supported by the terminal for uplink transmission is 8, and the maximum number of codewords corresponding to each transmission layer is 2. In case 4, the maximum number of transmission layers supported by the terminal for uplink transmission is 8, and the maximum number of codewords corresponding to each transmission layer is 1 or 2.

In another embodiment, the content included in the first information may also be identification information for indirectly characterizing the specific information, for example, may be a capability type of the terminal. The capability type may be understood as a predefined identification manner between the terminal and the network device, which is used to characterize the maximum number of transmission layers supported by the terminal during uplink transmission and the number of codewords corresponding to the maximum number of transmission layers. Under the condition that the network equipment receives the first information and acquires the capability type from the first information, the maximum transmission layer number supported by the terminal for uplink transmission and the maximum code word number corresponding to each transmission layer number can be determined according to a predefined capability type interpretation mode. Different from the manner of configuring specific information to the first information in the above embodiment, in the embodiment of the present disclosure, the manner of configuring the capability type to the first information may directly embody one or more codeword-to-layer mapping schemes supported by the terminal during uplink transmission.

For ease of understanding, the following list of possible cases when the first information contains a capability type.

For example, the capability type included in the first information may be a first capability type, a second capability type, a third capability type, or a fourth capability type, corresponding to the possible situations of the maximum number of transmission layers and the number of codewords.

According to the communication method provided by the implementation of the disclosure, the maximum number of transmission layers supported by the uplink transmission of the first capability type characterization terminal is 4, and the maximum number of codewords corresponding to each transmission layer is 1.

According to the communication method provided by the implementation of the disclosure, the maximum number of transmission layers supported by the second capability type characterization terminal for uplink transmission is 8, and the maximum number of codewords corresponding to each transmission layer is 1.

According to the communication method provided by the implementation of the disclosure, the maximum number of transmission layers supported by the uplink transmission of the third capability type characterization terminal is 8, and the maximum number of codewords corresponding to each transmission layer is 2.

According to the communication method provided by the implementation of the disclosure, the maximum number of transmission layers supported by the fourth capability type characterization terminal for uplink transmission is 8, and the maximum number of codewords corresponding to each transmission layer is 1 or 2.

In the embodiment of the disclosure, the network device characterizes a mapping relationship between a codeword and a layer for a codeword-layer mapping scheme configured by a terminal.

In the above embodiment, for the case that the terminal only supports layer mapping through a single codeword, the codeword to layer mapping scheme configured by the network device for the terminal uses a single codeword to perform layer mapping, and the scheme may be further divided into two codeword to layer mapping schemes according to the maximum number of transmission layers supported by the terminal.

According to the communication method provided by the implementation of the disclosure, for the case that the maximum transmission layer number supported by the terminal is 4, the codeword-layer mapping scheme is to use a single codeword to map data to a layer when the transmission layer number is 1, 2,3 or 4.

According to the communication method provided by the implementation of the disclosure, for the case that the maximum transmission layer number supported by the terminal is 8, the codeword-layer mapping scheme is to adopt a single codeword to map data to a layer when the transmission layer number is 1,2, 3, 4,5, 6, 7 or 8.

According to the communication method provided by the implementation of the disclosure, aiming at the situation that the terminal only supports layer mapping through the maximum two codewords, a codeword-to-layer mapping scheme configured by the network equipment for the terminal is to adopt the two codewords for layer mapping. For example, for the case that the maximum number of transmission layers supported by the terminal is 8, the codeword-to-layer mapping scheme is to use a single codeword to perform data-to-layer mapping when the number of transmission layers is 1, 2,3 or 4, and to use two codewords to perform data-to-layer mapping when the number of transmission layers is 5, 6, 7 or 8.

According to the communication method provided by the implementation of the disclosure, aiming at the situation that the terminal simultaneously supports single codeword mapping and maximum two codeword mapping, the codeword-to-layer mapping scheme can simultaneously comprise layer mapping by adopting a single codeword and layer mapping by adopting two codewords. For example, for the case where the maximum number of transmission layers supported by the terminal is 8, the codeword-to-layer mapping scheme may include performing data-to-layer mapping with a single codeword when the number of transmission layers is 1,2, 3, 4, 5, 6, 7, or 8, and may include performing layer mapping with a single codeword when the number of transmission layers is 1,2, 3, or 4, and performing layer mapping with two codewords when the number of transmission layers is 5, 6, 7, or 8.

In the embodiment of the disclosure, the codeword to layer mapping scheme configured by the network device for the terminal to perform uplink transmission corresponds to a maximum number of codewords and/or a maximum number of transmission layers. Further, the terminal may perform the mapping between the codeword and the layer based on a codeword to layer mapping scheme supported by itself, in combination with a maximum number of codewords and/or a maximum number of transmission layers configured by the network device.

For example, the network device may instruct the terminal to configure the codeword to layer mapping scheme for uplink transmission by sending signaling. The information transmitted by the network device for configuring the codeword to layer mapping scheme for the terminal is referred to as second information for convenience of description hereinafter.

Fig. 6 is a flowchart of another communication method according to an exemplary embodiment, and as shown in fig. 6, step S21 in the embodiment of the disclosure is similar to the execution method of step S11 in fig. 1, and will not be described herein.

In step S22, a codeword-to-layer mapping scheme used by the terminal for uplink transmission is determined based on the first information.

In step S23, the second information is transmitted to the terminal.

In the embodiment of the disclosure, the second information is used to indicate a codeword-to-layer mapping scheme used by the network device for uplink transmission configured for the terminal. The network equipment determines a codeword-layer mapping scheme supported by the terminal through the first information reported by the terminal, and generates second information in combination with actual communication requirements so as to realize corresponding configuration of the codeword-layer mapping scheme of the terminal. On the basis, in one aspect, the network equipment configures a codeword-to-layer mapping scheme which can be supported by the terminal in combination with the terminal reporting information. On the other hand, for a terminal supporting multiple codeword-to-layer mapping schemes at the same time, the network device side may configure the codeword-to-layer mapping scheme meeting the requirements for the terminal based on different requirements. Based on the two aspects, the method and the device provide an adaptive scheme for the expansion of the number of transmission layers of the terminal and a configuration scheme with more flexible use scene.

The second information may be carried in radio resource control signaling, for example.

For example, for a terminal, a codeword-to-layer mapping scheme supportable by the terminal can be roughly divided into layer mapping with a single codeword and layer mapping with a maximum of two codewords. Correspondingly, the second information sent by the network device may be used to instruct the terminal to perform layer mapping using a single codeword, or instruct the terminal to perform layer mapping using a maximum of two codewords. In other words, the second information sent by the network device is used to configure the terminal with one of the codeword to layer mapping schemes that it supports.

In the embodiment of the present disclosure, the terminal side may be configured with a predefined default codeword to layer mapping scheme, which may be any one of the mapping schemes supported by the terminal, which is not limited in this disclosure. Correspondingly, the network device side can be configured to activate the activation mode of the terminal configuration default codeword to layer mapping scheme. For example, the network device may choose not to send the second information, so that the terminal triggers execution of a default configuration mode for the codeword-to-layer mapping scheme, that is, performs layer mapping according to the default codeword-to-layer mapping scheme, when the terminal does not receive the second information (for example, the terminal may not receive the second information within a specified period after sending the first information).

On the basis, the network equipment can update the default codeword-layer mapping scheme of the terminal in a mode of issuing update indication information. Wherein the update indication information is used for indicating updating of the default codeword to layer mapping scheme. For ease of understanding, the following exemplary description is provided.

For example, for a terminal with a capability type of the fourth capability type, the codeword-to-layer mapping scheme supported by the terminal includes layer mapping with a single codeword and layer mapping with a maximum of two codewords. If the default codeword to layer mapping scheme currently configured by the terminal is that a single codeword is used for layer mapping, the network device may instruct the terminal to update the default codeword to layer mapping scheme by sending update instruction information. For example, the network device instructs the terminal to perform layer mapping from using a single codeword to the maximum two codewords through updating the indication information to instruct the terminal to perform layer mapping from the default codeword to the layer mapping scheme. On the basis, the codeword-to-layer mapping scheme which is performed by default triggering at the terminal side can be changed by the network equipment side based on actual requirements, and the method can further improve the flexibility of the terminal for layer mapping.

For ease of understanding, the following illustrates a number of possible ways of transmitting the update indication information.

In an example, the network device may send the update indication information based on dynamically switching indication domains of single transmission reception points (Single Transmission and Reception Point, STRP) and multiple transmission reception points (Multi Transmission and Reception Point, MTRP) in the downlink control information (Downlink Control Information, DCI). In another example, the network device may send update indication information based on a newly added information indication field (e.g., newly added 1 bit) in the downlink control information. In yet another example, the network device may send update indication information based on a new code point (code point) and/or new indication information in the antenna port indication field. In addition, it should be noted that the present disclosure may transmit the update instruction information by one or a combination of the above methods, but the specific transmission method of the update instruction information is not limited thereto.

For ease of understanding, an exemplary implementation of transmitting update indication information is described below by taking an example of transmitting update indication information through a single transmission reception point and a multiple transmission reception point dynamic handover indication domain.

For example, a terminal that supports layer mapping with a single codeword and layer mapping with at most two codewords at the same time is provided. The network device may send the default codeword to layer mapping scheme for indicating that the layer mapping is performed by using at most two codewords, and update the default codeword to layer mapping scheme for performing layer mapping by using a single codeword, when knowing that the default codeword to layer mapping scheme of the terminal is performed by using at most two codewords, and confirming that the dynamic handover indication domain indicates a single transmission receiving point. Correspondingly, the network device may also send the default codeword to layer scheme for indicating that the layer mapping is to be performed by using the single codeword, and update the default codeword to layer mapping scheme for performing layer mapping by using at most two codewords, when knowing that the default codeword to layer mapping scheme of the terminal is to perform layer mapping by using the single codeword and confirming that the dynamic switching indication domain indicates the multiple transmission receiving points. For the uplink transmission mode of the single transmission receiving point, the layer mapping performed by using a single codeword has higher transmission efficiency (correspondingly, for the uplink transmission mode of the multiple transmission receiving point, the layer mapping performed by using the maximum two codewords has higher transmission efficiency). Therefore, the default codeword to layer scheme configured by the terminal is updated in the above manner, so that the layer mapping manner performed by the terminal by default is attached to the actual scene of uplink transmission, and the uplink transmission efficiency is ensured.

In the embodiment of the disclosure, the network device may acquire a codeword-to-layer mapping scheme supported by the terminal for uplink transmission by receiving the first information sent by the terminal, and further configure the codeword-to-layer mapping scheme used for uplink transmission for the terminal by sending the second information. On this basis, as a possible implementation, the terminal may further transmit another information other than the first information to indicate a codeword-to-layer mapping scheme that it desires to use. The present disclosure is hereinafter for convenience of description, information transmitted by a terminal for indicating a codeword-to-layer mapping scheme that the terminal desires to use is referred to as third information. The third information is used to indicate, for example, a codeword to layer mapping scheme that the terminal desires to use. And, the third information may indicate that the layer mapping is performed using a single codeword or that the layer mapping is performed using a maximum of two codewords, corresponding to a codeword-to-layer mapping scheme supported by the terminal for uplink transmission.

Fig. 7 is a flow chart illustrating yet another communication method according to an exemplary embodiment, as shown in fig. 7, including the following steps.

In step S31, the first information transmitted by the terminal is received.

In step S32, third information transmitted by the terminal is received.

In step S33, the second information is transmitted to the terminal.

According to the communication method provided by the embodiment of the disclosure, the network equipment can determine the codeword-to-layer mapping scheme supported by the terminal for uplink transmission according to the first information, and determine the codeword-to-layer mapping scheme expected to be used by the terminal for uplink transmission according to the third information. Based on this, the network device can configure and send the second information according to the actual requirement, so as to configure the codeword-layer mapping scheme supported by the terminal and fitting the requirement for the terminal.

And for the terminal, the codeword-to-layer mapping scheme indicated by the third information characterizes the codeword-to-layer mapping scheme which is selected by the terminal from a plurality of supported codeword-to-layer mapping schemes and is most fit with the current uplink transmission scene. The following exemplifies a possible case where the terminal triggers the transmission of the third information, taking the terminal of the fourth capability type as an example.

For example, in case that the capability type supported by the terminal is the fourth capability type, the third information may be used to indicate layer mapping with a single codeword or layer mapping with a maximum of two codewords. Wherein, for the third information for indicating layer mapping with maximum two codewords, for example, the terminal may transmit when at least one of the following conditions is satisfied.

Condition 1: the signal quality difference between the different data layers is greater than a first threshold value.

Condition 2: aiming at a multi-transmission receiving point scene, the difference of channel quality indications received by the terminal through measuring the cooperative transmission receiving points is larger than a second threshold value.

Condition 3: the reference signal received power difference among all the reported beams obtained by the terminal during beam measurement is larger than a third threshold value.

Condition 4: the signal quality difference between the reporting beams obtained by the terminal during beam measurement is larger than a fourth threshold value.

Condition 5: when the terminal performs multi-layer transmission through a single codeword, a continuous retransmission event occurs in a transmission block, and a timer for indicating retransmission is overtime.

The first threshold value, the second threshold value, the third threshold value and the fourth threshold value are used for judging whether the codeword supported by the terminal is in the codeword-layer mapping scheme or not, and the codeword-layer mapping scheme which enables the uplink transmission effect of the terminal to be optimal is met. Taking condition 1 as an example, when the signal quality difference between different data layers is greater than a first threshold, the uplink transmission effect of the terminal performing layer mapping by using a single codeword is worse than the uplink transmission effect of the terminal performing layer mapping by using a maximum of two codewords. In other words, when the terminal does not meet the above condition, the terminal may be instructed to perform layer mapping with a single satisfaction. In addition, it should be noted that specific values of the first threshold value, the second threshold value, the third threshold value and the fourth threshold value may be adjusted according to actual requirements, and values of the first threshold value, the second threshold value, the third threshold value and the fourth threshold value may be the same or different.

In the above embodiment, for the case that only one codeword to layer mapping scheme is supported by uplink transmission of the terminal, the second information sent by the network device is used to directly configure the supported codeword to layer mapping scheme for the terminal. Aiming at the condition that the terminal supports multiple codeword-to-layer mapping schemes simultaneously, the second information sent by the network equipment is used for selecting and configuring the codeword-to-layer mapping scheme which is most fit with the current uplink transmission scene for the terminal in the multiple codeword-to-layer mapping schemes supported by the terminal. And, since the codeword to layer mapping scheme indicated by the third information is the codeword to layer mapping scheme that the terminal expects to use. Thus, as a possible implementation, the network device may use the codeword-to-layer mapping scheme indicated by the third information as the codeword-to-layer mapping scheme indicated by the second information. Of course, the network device may also select, according to actual requirements, another codeword-to-layer mapping scheme that is different from the codeword-to-layer mapping scheme indicated by the third information and that is supported by the terminal.

For example, for a terminal with a capability type of the fourth capability type, if the codeword-to-layer mapping scheme indicated by the third information is layer mapping using a single codeword, the network device may directly use the codeword-to-layer mapping scheme indicated by the third information (i.e., layer mapping using a single codeword) as the codeword-to-layer mapping scheme indicated by the second information, so as to achieve the effect that the network device "adopts" the terminal "advice". Accordingly, the network device may also select "not adopt" the "suggestion" of the terminal according to the actual situation, that is, not use the codeword-to-layer mapping scheme indicated by the third information (i.e., use a single codeword for layer mapping) as the codeword-to-layer mapping scheme indicated by the second information, but use the maximum two codewords for layer mapping as the codeword-to-layer mapping scheme indicated by the second information.

In the embodiment of the present disclosure, the first information may be carried in at least one of radio resource control signaling, medium access control unit signaling, and uplink control instruction signaling, for example.

In the embodiment of the disclosure, the second information may be carried in radio resource control signaling, for example.

According to the communication method provided by the embodiment of the disclosure, the terminal can report the maximum number of transmission layers and the maximum number of codewords supported by the terminal to the network equipment, so that the network equipment can acquire one or more codeword-layer mapping schemes supported by the terminal side for uplink transmission. On this basis, the network device may configure the codeword to layer mapping scheme used for uplink transmission for the terminal according to the codeword to layer mapping scheme supported by the terminal for uplink transmission. When the network device configures the codeword-to-layer mapping scheme of the terminal, the codeword-to-layer mapping scheme supported by the terminal is referred, so that the network device can configure the codeword-to-layer mapping scheme for the terminal with different layer mapping capabilities, thereby improving the compatibility and the adaptability of the scheme. For a scene that the terminal performs uplink transmission expansion through the maximum four layers to uplink transmission through the maximum eight layers of cores, the method provides an adaptation scheme for transmission layer expansion, and can meet the communication requirements of terminals with different layer mapping capacities in the uplink transmission scene. Furthermore, as for the possible way of configuring the codeword to layer scheme, in one possible way, the network device may instruct the terminal to perform the corresponding configuration of the codeword to layer scheme by means of signaling. In another possible manner, the terminal and the network device may perform corresponding configuration according to a predefined default codeword-to-layer scheme through a specific interaction manner. Based on the above-mentioned multiple feasible modes, the configuration of the codeword-layer mapping scheme for uplink transmission of the terminal can be completed between the network device and the terminal according to multiple different scenes, and the method provides multiple choices for the configuration of the codeword-layer mapping scheme so as to meet the configuration requirements under multiple different scenes.

Based on the same conception, the embodiment of the disclosure also provides a communication method applied to the terminal.

The terminal in this embodiment is configured to interact with the network device in any one of the foregoing embodiments, so as to complete configuration of the codeword to layer mapping scheme. Reference should be made to any of the above embodiments if such an ambiguity exists in the embodiments described below. Also, if there is an ambiguity in the above embodiment, reference may be made to any of the following embodiments.

Fig. 8 is a flowchart illustrating a communication method according to an exemplary embodiment, which is used in a terminal as shown in fig. 8, including the following steps.

In step S41, first information is transmitted to the network device.

The first information is used for indicating a maximum transmission layer number supported by the terminal for uplink transmission and a number of codewords corresponding to the transmission layer number, and is used for indicating the network equipment to configure a codeword-layer mapping scheme used for uplink transmission for the terminal based on the first information. Furthermore, the codeword to layer mapping scheme characterizes the mapping relationship between codewords and the transport layer.

The first information may be carried in at least one of radio resource control signaling, medium access control unit signaling, and uplink control indication signaling, for example.

In step S42, the first information is sent to the network device.

According to the communication method provided by the embodiment of the disclosure, the terminal sends the first information to the network equipment, so that the network equipment configures a codeword-to-layer mapping scheme for uplink transmission for the terminal based on the first information.

By way of example, the capability type contained in the first information may be a first capability type, a second capability type, a third capability type, or a fourth capability type.

According to the communication method provided by the implementation of the disclosure, the maximum number of transmission layers supported by the uplink transmission of the first capability type characterization terminal is 4, and the maximum number of codewords corresponding to each transmission layer is 1. On the basis, when the terminal performs uplink transmission through 1,2, 3 or 4 layers of transmission layers, a single codeword is adopted to perform data-to-layer mapping.

According to the communication method provided by the implementation of the disclosure, the maximum number of transmission layers supported by the second capability type characterization terminal for uplink transmission is 8, and the maximum number of codewords corresponding to each transmission layer is 1. On the basis, when the terminal performs uplink transmission through 1,2, 3,4, 5,6,7 or 8 layers of transmission layers, a single codeword is adopted to perform data-to-layer mapping.

According to the communication method provided by the implementation of the disclosure, the maximum number of transmission layers supported by the uplink transmission of the third capability type characterization terminal is 8, and the maximum number of codewords corresponding to each transmission layer is 2. On the basis, when the terminal performs uplink transmission through the 1,2, 3 or 4-layer transmission layer, a single codeword is adopted to perform data-to-layer mapping, and when the terminal performs uplink transmission through the 5, 6,7 or 8-layer transmission layer, two codewords are adopted to perform data-to-layer mapping.

According to the communication method provided by the implementation of the disclosure, the maximum number of transmission layers supported by the fourth capability type characterization terminal for uplink transmission is 8, and the maximum number of codewords corresponding to each transmission layer is 1 or 2. On the basis, when the terminal performs uplink transmission through the 1,2, 3 or 4-layer transmission layer, a single code word is adopted to perform data-to-layer mapping, and when the terminal performs uplink transmission through the 5, 6,7 or 8-layer transmission layer, a single code word or two code words are adopted to perform data-to-layer mapping.

In the embodiment of the disclosure, the network device characterizes a mapping relationship between a codeword and a layer for a codeword-layer mapping scheme configured by a terminal. In the above embodiment, for the case that the terminal only supports layer mapping through a single codeword, the codeword to layer mapping scheme configured by the network device for the terminal uses a single codeword to perform layer mapping, and the scheme may be further divided into two codeword to layer mapping schemes according to the maximum number of transmission layers supported by the terminal.

For example, the codeword to layer mapping scheme configured for the terminal for uplink transmission corresponds to a maximum number of codewords and/or a maximum number of transmission layers.

In the embodiment of the disclosure, the network device may send the second information. The method comprises the steps of indicating a codeword-to-layer mapping scheme used by the network equipment for uplink transmission configured for the terminal. Correspondingly, the terminal can receive the second information sent by the network device, and configure a codeword-to-layer mapping scheme used for uplink transmission by itself based on the second information. For example, the second information may be carried in radio resource control signaling.

In an embodiment of the present disclosure, the codeword-to-layer mapping scheme includes layer mapping with a single codeword and layer mapping with a maximum of two codewords. Correspondingly, the second information received by the terminal is used for indicating the terminal to perform layer mapping by adopting a single codeword or indicating the terminal to perform layer mapping by adopting two maximum codewords.

On the basis, the updating of the default codeword to layer mapping scheme can be completed through further interaction between the network equipment and the terminal. For example, the terminal receives update indication information sent by the network device, and updates the default codeword to layer mapping scheme by updating the indication information. For ease of understanding, several possible schemes for receiving update indication information by the terminal are provided below.

For example, in one example, the network device may dynamically switch the indication domain based on the single transmission receiving point and the multiple transmission receiving points in the downlink control information, and send the update indication information. In another example, the network device may send update indication information based on a newly added information indication field (e.g., newly added 1 bit) in the downlink control information. In yet another example, the network device may send update indication information based on the newly added code point and/or the newly added indication information in the antenna port indication field. In addition, it should be noted that the present disclosure may transmit the update instruction information by one or a combination of the above methods, but the specific transmission method of the update instruction information is not limited thereto.

As an example, as a possible implementation manner, the terminal may further send third information on the basis of the first information, to indicate a codeword to layer mapping scheme that the terminal desires to use. Further, the network device may determine, according to the third information, a mapping scheme used by the terminal indicated by the second information. Illustratively, the codeword-to-layer mapping scheme supportable by the terminal includes layer mapping with a single codeword and layer mapping with a maximum of two codewords. Accordingly, the third information is used to indicate layer mapping with a single codeword, accordingly. Or third information indicating that a maximum of two codewords are used for layer mapping.

In an embodiment, in a case where the capability type supported by the terminal is the fourth capability type, third information for indicating that layer mapping is performed using maximum two codewords is sent by the terminal when it is determined that at least one of the following conditions is satisfied:

Condition 4: the signal quality difference between the reporting beams obtained by the terminal during the beam measurement is larger than a fourth threshold value

The first threshold value, the second threshold value, the third threshold value and the fourth threshold value are used for judging whether the codeword supported by the terminal is in the codeword-layer mapping scheme or not, and the codeword-layer mapping scheme which enables the uplink transmission effect of the terminal to be optimal is met. Taking condition 1 as an example, when the signal quality difference between different data layers is greater than a first threshold, the uplink transmission effect of the terminal performing layer mapping by using a single codeword is worse than the uplink transmission effect of the terminal performing layer mapping by using a maximum of two codewords. In other words, when the terminal does not meet the above condition, the terminal may be instructed to perform layer mapping with a single satisfaction. In addition, it should be noted that specific values of the first threshold value, the second threshold value, the third threshold value and the fourth threshold value may be adjusted according to actual requirements, and values between the first threshold value, the second threshold value, the third threshold value and the fourth threshold value may be the same or different.

Further, as a possible way, the mapping scheme indicated by the second information may coincide with the mapping scheme indicated by the third information.

For example, the second information may be carried in radio resource control signaling.

According to the communication method provided by the embodiment of the disclosure, the terminal can report the layer mapping energy of the terminal by using the radio resource control signaling, the media access control unit signaling or the downlink control information signaling. For example, the maximum number of transmission layers and the number of codewords that support transmission are reported. For another example, a specific capability type is reported.

In an embodiment, specific capability types of the terminal may be configured according to the first capability type, the second capability type, the third capability type, and the fourth capability type. For example, a capability type 1 may be configured for a terminal having a first capability type, i.e. "the terminal supports only a maximum of 4 layers of layer mapping schemes, corresponding to 1 codeword". A terminal having the second capability type may be configured with capability type 2, i.e. "the terminal only supports a maximum of1 codeword and a maximum of 8 layers layer mapping scheme". A terminal with a third capability type may be configured with capability type 3, i.e. "the terminal only supports a maximum of 2 codewords and a maximum of 8 layers layer mapping scheme, wherein 5-8 layers support 2 codewords". Furthermore, a terminal having a fourth capability type may be configured with capability type 4, i.e. "a layer mapping scheme in which the terminal supports only a maximum of 2 CW max 8 layers, wherein 5-8 layers support 1 codeword, or 2 codewords"

The terminal with capability type 4 can report a network suggestion scheduling rule by further using a radio resource control signaling, a media access control unit signaling or an uplink control information signaling through a certain triggering condition, so as to suggest that the network device configures a layer mapping scheme of maximum 2 code words and maximum 8 layers, wherein the 5-8 layers support the 2 code words.

For example, a layer mapping scheme for suggesting that the network device configure a maximum of2 codewords and a maximum of 8 layers, where 5-8 layers support network suggested scheduling rules for 2 codewords, for example, may be reported by the terminal when one or a combination of the following trigger conditions are triggered.

Triggering condition 1: the signal quality difference between the different data layers is greater than a first threshold value.

Triggering condition 2: aiming at a multi-transmission receiving point scene, the difference of channel quality indications received by the terminal through measuring the cooperative transmission receiving points is larger than a second threshold value.

Triggering condition 3: the reference signal received power difference among all the reported beams obtained by the terminal during beam measurement is larger than a third threshold value.

Triggering condition 4: the signal quality difference between the reporting beams obtained by the terminal during beam measurement is larger than a fourth threshold value.

Triggering condition 5: when the terminal performs multi-layer transmission through a single codeword, a continuous retransmission event occurs in a transmission block, and a timer for indicating retransmission is overtime.

According to the communication method provided by the embodiment of the disclosure, the network equipment reports the terminal capacity type and configures a corresponding layer mapping scheme through the radio resource control signaling.

For example, for a capability type 4 terminal, the terminal may be configured with infinite resource control signaling to perform layer mapping with maximum 2 codewords and maximum 8 layers, or to perform layer mapping with maximum 1 codeword and maximum 8 layers, and configured to perform layer mapping by default using maximum 1 codeword and maximum 8 layers.

In the embodiment of the disclosure, the network device may reconfigure through infinite resource control signaling, medium access control unit signaling, or update the PUSCH scheduling indicating the terminal whether scheme 2 is subsequently adopted. And, the network device may instruct, through downlink control information signaling or downlink control information signaling, whether the subsequent scheduling uses maximum 2 codewords for layer mapping at maximum 8 layers. In an example, the layer mapping scheme may be defaulted to associate single-reception points and multiple-reception point dynamic indication fields in the downlink control information signaling. For example: and when the dynamic indication indicates a single receiving point, configuring the terminal to use maximum 1 codeword and maximum 8 layers to perform layer mapping. For another example, the terminal is configured to perform layer mapping using a maximum of 2 codewords and a maximum of 8 layers when the dynamic indication field indicates multiple reception points. In another example, an independent indication field may be added to the downlink control information signaling for dynamic indication (e.g., 1 bit). In yet another example, the codeword-to-layer mapping scheme by the terminal may be indicated by an increased amount of information for code points in the antenna port indication field. In addition, the indication can be performed by the code point in other indication domains.

In one embodiment, the network device uses the terminal to report the proposal, and configures, indicates, or updates the proposal through radio resource control signaling, media access control unit signaling, or uplink control information signaling.

It should be understood by those skilled in the art that the various implementations/embodiments of the present disclosure may be used in combination with the foregoing embodiments or may be used independently. Whether used alone or in combination with the previous embodiments, the principles of implementation are similar. In the practice of the present disclosure, some of the examples are described in terms of implementations that are used together. Of course, those skilled in the art will appreciate that such illustration is not limiting of the disclosed embodiments.

Based on the same conception, the embodiment of the disclosure also provides a communication device applied to the network equipment.

It will be appreciated that, in order to implement the above-described functions, the communication device provided in the embodiments of the present disclosure includes corresponding hardware structures and/or software modules that perform the respective functions. The disclosed embodiments may be implemented in hardware or a combination of hardware and computer software, in combination with the various example elements and algorithm steps disclosed in the embodiments of the disclosure. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application, but such implementation is not to be considered as beyond the scope of the embodiments of the present disclosure.

Fig. 9 is a block diagram of a diagram communication device 100, according to an exemplary embodiment. Referring to fig. 9, the apparatus 100 is applied to a network device, and includes a receiving unit 101 and a processing unit 102.

The receiving unit 101 is configured to receive first information sent by a terminal, where the first information is used to indicate a maximum number of transmission layers supported by the terminal for uplink transmission, and a number of codewords corresponding to the number of transmission layers. The processing unit 102 is configured to configure, for the terminal, a codeword-to-layer mapping scheme used for uplink transmission, where the codeword-to-layer mapping scheme characterizes a mapping relationship between the codeword and a transmission layer, based on the first information.

In one embodiment, the first information includes: the terminal carries out the maximum transmission layer number supported by the uplink transmission and the number of code words corresponding to the transmission layer number.

In one embodiment, the first information includes: the type of capability supported by the terminal. The capability type is used for representing the maximum transmission layer number supported by the terminal for uplink transmission and the number of codewords corresponding to the transmission layer number.

In one embodiment, the capability type includes a first capability type. The first capability type characterizes that the maximum number of transmission layers supported by the terminal for uplink transmission is 4, and the maximum number of codewords corresponding to each transmission layer is 1.

In one embodiment, the capability type includes a second capability type. The maximum number of transmission layers supported by the second capability type characterization terminal for uplink transmission is 8, and the maximum number of codewords corresponding to each transmission layer is 1.

In one embodiment, the capability type includes a third capability type. The third capability type characterizes that the maximum number of transmission layers supported by the terminal for uplink transmission is 8, and the maximum number of codewords corresponding to each transmission layer is 2.

In one embodiment, the capability type includes a fourth capability type. The fourth capability type characterizes that the maximum number of transmission layers supported by the terminal for uplink transmission is 8, and the maximum number of codewords corresponding to each transmission layer is 1 or 2.

In one embodiment, the codeword to layer mapping scheme includes: layer mapping is performed using a single codeword, including data-to-layer mapping using a single codeword when the number of transmission layers is 1,2, 3, or 4.

In one embodiment, the codeword to layer mapping scheme includes: layer mapping using a single codeword includes data-to-layer mapping using a single codeword when the number of transport layers is 1, 2,3, 4, 5, 6, 7, or 8.

In one embodiment, the codeword to layer mapping scheme includes: layer mapping is performed using a maximum of two codewords, including data-to-layer mapping using a single codeword when the number of transmission layers is 1,2, 3, or 4, and data-to-layer mapping using two codewords when the number of transmission layers is 5,6,7, or 8.

In one embodiment, the codeword to layer mapping scheme includes: layer mapping using a single codeword includes data-to-layer mapping using a single codeword when the number of transport layers is 1,2, 3, 4, 5, 6, 7, or 8. And performing layer mapping by using maximum two codewords, including performing layer mapping by using a single codeword when the number of transmission layers is 1,2, 3, or 4, and performing layer mapping by using two codewords when the number of transmission layers is 5, 6, 7, or 8.

In one embodiment, the processing unit 102 configures a codeword to layer mapping scheme for uplink transmission for a terminal in the following manner, including: the codeword to layer mapping scheme used for uplink transmission configured for the terminal corresponds to a maximum number of codewords and/or a maximum number of transmission layers.

In one embodiment, the processing unit 102 configures, for the terminal, a codeword to layer mapping scheme used for uplink transmission based on the first information in a manner including: based on the first information, a codeword to layer mapping scheme used by the terminal for uplink transmission is determined. And sending second information to the terminal, wherein the second information is used for indicating a codeword-to-layer mapping scheme used by the network equipment for uplink transmission configured for the terminal.

In one embodiment, the codeword to layer mapping scheme includes layer mapping with a single codeword and layer mapping with a maximum of two codewords. The second information is used for indicating the terminal to perform layer mapping by adopting a single codeword. Or the second information is used for indicating the terminal to perform layer mapping by adopting maximum two codewords.

In one embodiment, the codeword to layer mapping scheme comprises a predefined default codeword to layer mapping scheme.

In one embodiment, the processing unit 102 is further configured to: and sending update indication information, wherein the update indication information is used for indicating updating of the default codeword to layer mapping scheme.

In one embodiment, transmitting the update indication information includes at least one of: and transmitting update indication information based on the single transmission receiving point and the multiple transmission receiving point dynamic switching indication domain in the downlink control information DCI. And transmitting update indication information based on the newly added information indication field in the downlink control information DCI. And transmitting update indication information based on the newly added code point and/or the newly added indication information in the antenna port indication domain.

In one embodiment, the receiving unit 101 is further configured to: and receiving third information sent by the terminal, wherein the third information is used for indicating that single code words are adopted for layer mapping or maximum two code words are adopted for layer mapping.

In one embodiment, in response to the capability type supported by the terminal being the fourth capability type, third information for indicating layer mapping with a maximum of two codewords is transmitted by the terminal upon determining that at least one of the following conditions is met: the signal quality difference between the different data layers is greater than a first threshold value. Aiming at a multi-transmission receiving point scene, the difference of channel quality indications received by the terminal through measuring the cooperative transmission receiving points is larger than a second threshold value. The reference signal received power difference among all the reported beams obtained by the terminal during beam measurement is larger than a third threshold value. When the signal quality difference between the reporting beams obtained by the terminal during beam measurement is larger than the fourth threshold value, and the terminal performs multi-layer transmission through a single code word, a continuous retransmission event occurs in a transmission block, and a timer for indicating retransmission is overtime.

In one embodiment, the processing unit 102 determines, based on the third information, a codeword to layer mapping scheme used by the terminal indicated by the second information in the following manner: and using the codeword-to-layer mapping scheme indicated by the third information as the codeword-to-layer mapping scheme indicated by the second information.

In one embodiment, the first information includes at least one of: radio resource control, RRC, signaling. Media access control MAC control element CE signaling. Uplink control indication signaling UCI.

In one embodiment, the second information includes radio resource control, RRC, signaling.

Fig. 10 is a block diagram of a communication device 200, according to an example embodiment. Referring to fig. 10, the apparatus 200 is applied to a terminal including a transmitting unit 201.

The sending unit 201 is configured to send first information to a network device, where the first information is used to instruct a terminal to perform a maximum number of transmission layers supported by uplink transmission and a number of codewords corresponding to the number of transmission layers, and is configured to instruct the network device to configure, for the terminal, a codeword-to-layer mapping scheme used for uplink transmission, where the codeword-to-layer mapping scheme characterizes a mapping relationship between codewords and transmission layers, based on the first information.

In one embodiment, the codeword to layer mapping scheme includes: layer mapping using a single codeword includes data-to-layer mapping using a single codeword when the number of transport layers is 1,2, 3, 4, 5, 6,7, or 8. And performing layer mapping by using maximum two codewords, including performing layer mapping by using a single codeword when the number of transmission layers is 1,2, 3, or 4, and performing data-to-layer mapping by using two codewords when the number of transmission layers is 5, 6,7, or 8.

In one embodiment, the codeword to layer mapping scheme configured for the terminal for uplink transmission corresponds to a maximum number of codewords and/or a maximum number of transmission layers.

In one embodiment, the apparatus further comprises: a receiving unit 202, configured to receive second information sent by the network device, where the second information is used to instruct the network device to configure a codeword-to-layer mapping scheme for uplink transmission configured for the terminal.

In one embodiment, the receiving unit 202 is further configured to: and receiving update indication information, wherein the update indication information is used for indicating updating of the default codeword to layer mapping scheme.

In one embodiment, the receiving unit 202 receives the update indication information in one or a combination of the following ways: and receiving update indication information based on the single transmission receiving point and the multiple transmission receiving point dynamic indication domain in the downlink control information DCI. And receiving update indication information based on the newly added information indication field in the downlink control information DCI. And receiving update indication information based on the newly added code point in the antenna port indication domain and/or containing the newly added indication information.

In one embodiment, the sending unit 201 is further configured to: and transmitting the third information to enable the network equipment to determine a mapping scheme used by the terminal indicated by the second information based on the third information. Wherein the third information is used to indicate layer mapping with a single codeword. Or third information indicating that a maximum of two codewords are used for layer mapping.

In one embodiment, in response to the capability type supported by the terminal being the fourth capability type, third information for indicating layer mapping using a maximum of two codewords is transmitted by the terminal upon determining that at least one of the following conditions is met: the signal quality difference between the different data layers is greater than a first threshold value. Aiming at a multi-transmission receiving point scene, the difference of channel quality indications received by the terminal through measuring the cooperative transmission receiving points is larger than a second threshold value. The reference signal received power difference among all the reported beams obtained by the terminal during beam measurement is larger than a third threshold value. The signal quality difference between the reporting beams obtained by the terminal during beam measurement is larger than a fourth threshold value. When the terminal performs multi-layer transmission through a single codeword, a continuous retransmission event occurs in a transmission block, and a timer for indicating retransmission is overtime.

In one embodiment, the codeword-to-layer mapping scheme indicated by the second information is consistent with the codeword-to-layer mapping scheme indicated by the third information.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Fig. 11 is a block diagram illustrating an apparatus 300 for communication according to an example embodiment. For example, apparatus 300 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.

Referring to fig. 11, the apparatus 300 may include one or more of the following components: a processing component 302, a memory 304, a power component 306, a multimedia component 308, an audio component 310, an input/output (I/O) interface 312, a sensor component 314, and a communication component 316.

The processing component 302 generally controls overall operation of the apparatus 300, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 302 may include one or more processors 320 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 302 can include one or more modules that facilitate interactions between the processing component 302 and other components. For example, the processing component 302 may include a multimedia module to facilitate interaction between the multimedia component 308 and the processing component 302.

Memory 304 is configured to store various types of data to support operations at apparatus 300. Examples of such data include instructions for any application or method operating on the device 300, contact data, phonebook data, messages, pictures, videos, and the like. The memory 304 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power component 306 provides power to the various components of the device 300. The power components 306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 300.

The multimedia component 308 includes a screen between the device 300 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 308 includes a front-facing camera and/or a rear-facing camera. The front-facing camera and/or the rear-facing camera may receive external multimedia data when the apparatus 300 is in an operational mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 310 is configured to output and/or input audio signals. For example, the audio component 310 includes a Microphone (MIC) configured to receive external audio signals when the device 300 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 304 or transmitted via the communication component 316. In some embodiments, audio component 310 further comprises a speaker for outputting audio signals.

The I/O interface 312 provides an interface between the processing component 302 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 314 includes one or more sensors for providing status assessment of various aspects of the apparatus 300. For example, the sensor assembly 314 may detect the on/off state of the device 300, the relative positioning of the components, such as the display and keypad of the device 300, the sensor assembly 314 may also detect a change in position of the device 300 or a component of the device 300, the presence or absence of user contact with the device 300, the orientation or acceleration/deceleration of the device 300, and a change in temperature of the device 300. The sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 314 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 316 is configured to facilitate communication between the apparatus 300 and other devices, either wired or wireless. The device 300 may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 316 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 300 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 304, including instructions executable by processor 320 of apparatus 300 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

Fig. 12 is a block diagram illustrating an apparatus 400 for communication according to an example embodiment. For example, the apparatus 400 may be provided as a server. Referring to fig. 12, the apparatus 400 includes a processing component 422 that further includes one or more processors, and memory resources represented by memory 432, for storing instructions, such as applications, executable by the processing component 422. The application program stored in memory 432 may include one or more modules each corresponding to a set of instructions. In addition, processing component 422 is configured to execute instructions to perform the method … … described above

The apparatus 400 may also include a power component 426 configured to perform power management of the apparatus 400, a wired or wireless network interface 450 configured to connect the apparatus 400 to a network, and an input output (I/O) interface 458. The apparatus 400 may operate based on an operating system stored in the memory 432, such as Windows Server, mac OS XTM, unixTM, linuxTM, freeBSDTM, or the like.

It is further understood that the term "plurality" in this disclosure means two or more, and other adjectives are similar thereto. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It is further understood that the terms "first," "second," and the like are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the expressions "first", "second", etc. may be used entirely interchangeably. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

It will be further understood that the meaning of the terms "responsive to" and the like referred to in this disclosure depends on the context and actual use scenario, as the term "responsive to" as used herein may be interpreted as "at … …" or "when … …".

It will be further understood that although operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

A method of communication, for use with a network device, comprising:

receiving first information sent by a terminal, wherein the first information is used for indicating the maximum transmission layer number supported by the terminal for uplink transmission and the number of codewords corresponding to the transmission layer number;

and configuring a codeword-layer mapping scheme used for uplink transmission for the terminal based on the first information, wherein the codeword-layer mapping scheme characterizes the mapping relationship between the codeword and a transmission layer.
The method of claim 1, wherein the first information comprises: and the terminal performs the maximum transmission layer number supported by uplink transmission and the number of codewords corresponding to the transmission layer number.
The method of claim 1, wherein the first information comprises: the capability type supported by the terminal;

The capability type is used for representing the maximum transmission layer number supported by the terminal for uplink transmission and the number of codewords corresponding to the transmission layer number.
A method according to claim 3, wherein the capability type comprises a first capability type;

the first capability type characterizes that the maximum number of transmission layers supported by the terminal for uplink transmission is 4, and the maximum number of codewords corresponding to each transmission layer is 1.
A method according to claim 3, wherein the capability type comprises a second capability type;

the second capability type characterizes that the maximum number of transmission layers supported by the terminal for uplink transmission is 8, and the maximum number of codewords corresponding to each transmission layer is 1.
A method according to claim 3, wherein the capability type comprises a third capability type;

and the third capability type characterizes that the maximum transmission layer number supported by the terminal for uplink transmission is 8, and the maximum code word number corresponding to each transmission layer number is 2.
A method according to claim 3, wherein the capability type comprises a fourth capability type;

And the fourth capability type characterizes that the maximum transmission layer number supported by the terminal for uplink transmission is 8, and the maximum code word number corresponding to each transmission layer number is 1 or 2.
The method of claim 4, wherein the codeword to layer mapping scheme comprises:

layer mapping is performed using a single codeword, including data-to-layer mapping using a single codeword when the number of transmission layers is 1,2, 3, or 4.
The method of claim 5, wherein the codeword to layer mapping scheme comprises:

Layer mapping using a single codeword includes data-to-layer mapping using a single codeword when the number of transport layers is 1,2, 3,4, 5,6,7, or 8.
The method of claim 6, wherein the codeword to layer mapping scheme comprises:

Layer mapping with maximum two codewords comprising

Mapping data to layer using single codeword when the number of transmission layers is 1,2, 3, or 4, and

When the number of transmission layers is 5, 6, 7, or 8, two codewords are used for data-to-layer mapping.
The method of claim 7, wherein the codeword to layer mapping scheme comprises:

Layer mapping is performed by adopting a single code word, wherein when the transmission layer number is 1,2, 3,4, 5,6,7 or 8, the data mapping to the layer is performed by adopting the single code word;

And performing layer mapping by using maximum two codewords, including performing layer mapping by using a single codeword when the number of transmission layers is1, 2,3, or 4, and performing layer mapping by using two codewords when the number of transmission layers is 5, 6, 7, or 8.
The method according to any of claims 1 to 11, wherein the codeword to layer mapping scheme used for uplink transmission for the terminal configuration comprises:

The codeword to layer mapping scheme configured for the terminal for uplink transmission corresponds to a maximum number of codewords and/or a maximum number of transmission layers.
The method of claim 12, wherein configuring a codeword-to-layer mapping scheme for the terminal for uplink transmission based on the first information comprises:

determining a codeword-to-layer mapping scheme used by the terminal for uplink transmission based on the first information;

and sending second information to the terminal, wherein the second information is used for indicating a codeword-to-layer mapping scheme which is configured by the network equipment for the terminal and used for uplink transmission.
The method of claim 13, wherein the codeword to layer mapping scheme comprises layer mapping with a single codeword and layer mapping with a maximum of two codewords;

The second information is used for indicating the terminal to perform layer mapping by adopting a single codeword; or (b)

The second information is used for indicating the terminal to perform layer mapping by adopting maximum two code words.
The method of claim 1, wherein the codeword to layer mapping scheme comprises a predefined default codeword to layer mapping scheme.
The method of claim 15, wherein the method further comprises:

And sending update indication information, wherein the update indication information is used for indicating to update the default codeword to layer mapping scheme.
The method of claim 16, wherein the sending update indication information comprises at least one of:

Based on the single transmission receiving point and the multiple transmission receiving point in the downlink control information DCI, dynamically switching the indication domain, and sending update indication information;

Based on the newly added information indication field in the downlink control information DCI, sending update indication information;

And transmitting update indication information based on the newly added code point and/or the newly added indication information in the antenna port indication domain.
The method of claim 13, wherein the method further comprises:

And receiving third information sent by the terminal, wherein the third information is used for indicating that single code words are adopted for layer mapping or indicating that maximum two code words are adopted for layer mapping.
The method of claim 18, wherein the third information indicating layer mapping with a maximum of two codewords is transmitted by the terminal upon determining that at least one of the following conditions is met in response to the supported capability type of the terminal being a fourth capability type:

The signal quality difference between different data layers is larger than a first threshold value;

Aiming at a multi-transmission receiving point scene, the difference of channel quality indications received by the terminal through measuring the cooperative transmission receiving points is larger than a second threshold value;

The reference signal received power difference among all reported beams obtained by the terminal during beam measurement is larger than a third threshold value;

The signal quality difference among the reporting beams obtained by the terminal during beam measurement is larger than a fourth threshold value;

when the terminal performs multi-layer transmission through a single code word, a continuous retransmission event occurs in a transmission block, and a timer for indicating the retransmission is overtime.
The method according to claim 18 or 19, wherein the determining, based on the third information, a mapping scheme used by the terminal indicated by the second information, comprises:

And taking the mapping scheme indicated by the third information as the mapping scheme indicated by the second information.
The method of claim 1, wherein the first information is carried in at least one of the following signaling:

radio resource control, RRC, signaling;

Media Access Control (MAC) control unit (CE) signaling;

Uplink control indication signaling UCI.
The method of claim 13, wherein the second information bearer is in radio resource control, RRC, signaling.
A communication method, applied to a terminal, comprising:

And sending first information to network equipment, wherein the first information is used for indicating the maximum transmission layer number supported by the terminal for uplink transmission and the number of code words corresponding to the transmission layer number, and is used for indicating the network equipment to configure a code word-layer mapping scheme used for uplink transmission for the terminal based on the first information, and the code word-layer mapping scheme represents the mapping relation between the code words and the transmission layer.
The method of claim 23, wherein the first information comprises: and the terminal performs the maximum transmission layer number supported by uplink transmission and the number of codewords corresponding to the transmission layer number.
The method of claim 23, wherein the first information comprises: the capability type supported by the terminal;

The capability type is used for representing the maximum transmission layer number supported by the terminal for uplink transmission and the number of codewords corresponding to the transmission layer number.
The method of claim 25, wherein the capability type comprises a first capability type;

the first capability type characterizes that the maximum number of transmission layers supported by the terminal for uplink transmission is 4, and the maximum number of codewords corresponding to each transmission layer is 1.
The method of claim 25, wherein the capability type comprises a second capability type;

the second capability type characterizes that the maximum number of transmission layers supported by the terminal for uplink transmission is 8, and the maximum number of codewords corresponding to each transmission layer is 1.
The method of claim 25, wherein the capability type comprises a third capability type;

and the third capability type characterizes that the maximum transmission layer number supported by the terminal for uplink transmission is 8, and the maximum code word number corresponding to each transmission layer number is 2.
The method of claim 25, wherein the capability type comprises a fourth capability type;

And the fourth capability type characterizes that the maximum transmission layer number supported by the terminal for uplink transmission is 8, and the maximum code word number corresponding to each transmission layer number is 1 or 2.
The method of claim 26, wherein the codeword to layer mapping scheme comprises: layer mapping is performed using a single codeword, including data-to-layer mapping using a single codeword when the number of transmission layers is 1, 2, 3, or 4.
The method of claim 27, wherein the codeword to layer mapping scheme comprises:

Layer mapping using a single codeword includes data-to-layer mapping using a single codeword when the number of transport layers is 1,2, 3,4, 5,6,7, or 8.
The method of claim 28, wherein the codeword to layer mapping scheme comprises:

layer mapping is performed using a maximum of two codewords, including data-to-layer mapping using a single codeword when the number of transmission layers is 1,2, 3, or 4, and data-to-layer mapping using two codewords when the number of transmission layers is 5, 6, 7, or 8.
The method of claim 29, wherein the codeword to layer mapping scheme comprises:

Layer mapping is performed by adopting a single code word, wherein when the transmission layer number is 1,2, 3,4, 5,6,7 or 8, the data mapping to the layer is performed by adopting the single code word; and

Layer mapping is performed using a maximum of two codewords, including single codeword mapping when the number of transmission layers is 1, 2, 3, or 4, and data-to-layer mapping when the number of transmission layers is 5, 6, 7, or 8.
The method according to any of the claims 23 to 32, characterized in that the codeword to layer mapping scheme used for uplink transmission configured for the terminal corresponds to a maximum number of codewords and/or a maximum number of transmission layers.
The method of claim 34, wherein the method further comprises:

and receiving second information sent by the network equipment, wherein the second information is used for indicating a codeword-layer mapping scheme which is configured by the network equipment for the terminal and used for uplink transmission.
The method of claim 35, wherein the codeword-to-layer mapping scheme comprises layer mapping with a single codeword and layer mapping with a maximum of two codewords;

The second information is used for indicating the terminal to perform layer mapping by adopting a single codeword; or (b)

The second information is used for indicating the terminal to perform layer mapping by adopting maximum two code words.
The method of claim 23, wherein the codeword to layer mapping scheme comprises a predefined default codeword to layer mapping scheme.
The method of claim 37, wherein the method further comprises:

and receiving update indication information, wherein the update indication information is used for indicating updating of the default codeword to layer mapping scheme.
The method of claim 38, wherein the update indication information is received in one or a combination of the following ways:

Receiving update indication information based on a single transmission receiving point and a multi-transmission receiving point dynamic indication domain in downlink control information DCI;

Based on the newly added information indication field in the downlink control information DCI, receiving update indication information;

and receiving update indication information based on the newly added code point in the antenna port indication domain and/or containing the newly added indication information.
The method of claim 35, wherein the method further comprises:

And transmitting third information, wherein the third information is used for indicating that the single code word is used for layer mapping or the maximum two code words are used for layer mapping.
The method of claim 40, wherein the third information indicating that the maximum of two codewords are used for layer mapping is transmitted by the terminal upon determining that at least one of the following conditions is met in response to the supported capability type of the terminal being a fourth capability type:

The signal quality difference between different data layers is larger than a first threshold value;

Aiming at a multi-transmission receiving point scene, the difference of channel quality indications received by the terminal through measuring the cooperative transmission receiving points is larger than a second threshold value;

The reference signal received power difference among all reported beams obtained by the terminal during beam measurement is larger than a third threshold value;

The signal quality difference among the reporting beams obtained by the terminal during beam measurement is larger than a fourth threshold value;

when the terminal performs multi-layer transmission through a single code word, a continuous retransmission event occurs in a transmission block, and a timer for indicating the retransmission is overtime.
The method according to claim 40 or 41, wherein the mapping scheme indicated by the second information is consistent with the mapping scheme indicated by the third information.
The method of claim 23, wherein the first information is carried in at least one of the following signaling:

radio resource control, RRC, signaling;

Media Access Control (MAC) control unit (CE) signaling;

Uplink control indication signaling UCI.
The method of claim 35, wherein the second information bearer is in radio resource control, RRC, signaling.
A communication apparatus, for use with a network device, comprising:

The receiving unit is used for receiving first information sent by the terminal, wherein the first information is used for indicating the maximum transmission layer number supported by the terminal for uplink transmission and the number of codewords corresponding to the transmission layer number;

And the processing unit is used for configuring a codeword-layer mapping scheme used for uplink transmission for the terminal based on the first information, wherein the codeword-layer mapping scheme represents the mapping relationship between the codeword and a transmission layer.
A communication device, for use in a terminal, comprising:

The sending unit is used for sending first information to the network equipment, the first information is used for indicating the maximum transmission layer number supported by the terminal for uplink transmission and the number of code words corresponding to the transmission layer number, the sending unit is used for indicating the network equipment to configure a code word-layer mapping scheme used for uplink transmission for the terminal based on the first information, and the code word-layer mapping scheme represents the mapping relation between the code words and the transmission layer.
A communication apparatus, for use with a network device, comprising:

A processor;

A memory for storing processor-executable instructions;

wherein the processor is configured to: performing the method of any one of claims 1 to 22.
A communication device, for use in a terminal, comprising:

A processor;

A memory for storing processor-executable instructions;

Wherein the processor is configured to: performing the method of any one of claims 23 to 44.
A storage medium having instructions stored therein which, when executed by a processor of a network device, cause the network device to perform the method of any one of claims 1 to 22.
A storage medium having instructions stored therein which, when executed by a processor of a terminal, enable the terminal to perform the method of any one of claims 23 to 44.
A non-transitory computer readable storage medium, which when executed by a processor of a network device, causes the network device to perform the method of any one of claims 1 to 22.
A non-transitory computer readable storage medium, which when executed by a processor of a terminal, causes the terminal to perform the method of any of claims 23 to 44.