CN109995443B

CN109995443B - Communication method, device and system

Info

Publication number: CN109995443B
Application number: CN201711480865.2A
Authority: CN
Inventors: 胡星星; 赵悦莹; 汪凡
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-12-29
Filing date: 2017-12-29
Publication date: 2022-03-11
Anticipated expiration: 2037-12-29
Also published as: WO2019129227A1; CN109995443A

Abstract

The present application relates to the field of wireless communication technologies, and in particular, to a communication method, apparatus, and system. The embodiment of the application provides a communication method, which comprises the steps that first communication equipment schedules second communication equipment in different subsets of N pieces of second communication equipment to send signals in each channel measurement time period in T pieces of channel measurement time periods, and the subsets need to meet a certain rule. The method aims to complete link measurement between D2D communication terminals by using as few time-frequency domain resources as possible, and can be applied to realize link measurement between D2D communication terminals under various scenes of change of the number of the time-frequency domain resources or change of the number of terminals participating in D2D communication.

Description

Communication method, device and system

Technical Field

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

Background

With the development of wireless communication technology and the popularization of intelligent terminals, the number of terminals in a wireless network is increasing dramatically. The end-to-Device (D2D) communication technology realizes communication between close-range terminals, thereby being capable of sharing network load of a wireless network and supporting more communication service types. Meanwhile, based on the natural advantages of near field communication, the D2D communication technology can also improve the spectrum efficiency, obtain higher throughput performance and lower transmission delay.

In the prior art, data transmission is generally performed between terminals performing D2D communication in a broadcast manner, and a link adaptation function is not provided between a data sender and a data receiver, so that the quality of data transmission cannot be guaranteed. To solve the problem, link measurement between D2D communication terminals needs to be introduced, and how to efficiently utilize limited time-frequency resources to realize link measurement between D2D communication terminals becomes a technical problem to be solved urgently.

Disclosure of Invention

The application describes a communication method, device and system.

In a first aspect, an embodiment of the present application provides a communication method, including: the first communication device schedules ones of the N second communication devices for each of the T channel measurement periodsTransmitting signals by second communication devices in different subsets, wherein the T channel measurement periods are configured for the N second communication devices by the first communication device, N is an integer greater than or equal to 3, T is an integer greater than or equal to 3, and the N second communication devices comprise a first group of N second communication devices₁And a second group of second communication devices N₂N ═ N₁+N₂And the subset satisfies: each of the subsets contains less than or equal to N of the first group of second communication devices ₁2 second communication devices; the first group of second communication devices contained in each of the subsets is not identical; any one of the first set of second communication devices belongs to at least two different of the subsets; any one of the second communication devices in the second group belongs to at least two different subsets, at least two subsets to which any one of the second communication devices in the second group belongs are different from the subsets to which other second communication devices in the second group belong, and all the second communication devices in the first group are included in the two subsets to which any one of the second communication devices in the second group belongs.

In one possible design, the method further includes the first communication device sending start position information of the T channel measurement periods, at least one of length information of each channel measurement period and cycle information of the T channel measurement periods to at least one of the N second communication devices.

In one possible design, the method further includes the first communication device sending at least one of the following information to at least one of the N second communication devices: information of the number of resources available for transmitting signals at each of the T channel measurement periods, information of the value of N, and identification information of the at least one second communication device. Optionally, the resource information includes frequency domain resource information and/or sequence information for generating a signal.

In one possible design, the N second communication devices are part of M second communication devices, M being an integer greater than N, the method further comprising: the first communication device schedules, at each of K channel measurement periods, second communication devices in different subsets of M-N second communication devices, except the N second communication devices, of the M second communication devices to transmit signals, wherein the K channel measurement periods are configured for the other M-N second communication devices by the first communication device, and do not coincide with the T channel measurement periods, K is an integer greater than or equal to 1, and at least one of the K channel measurement periods is used for reception of a signal transmitted by at least one of the N second communication devices by at least one of the other M-N second communication devices.

In one possible design, the N second communication devices are part of M second communication devices, M being an integer greater than N, the method further comprising: the first communication device schedules at least one of the N second communication devices to transmit a signal in one of at least one channel measurement period, or schedules at least one of the M-N second communication devices other than the N second communication devices to transmit a signal in one of at least one channel measurement period, wherein the at least one channel measurement period is not coincident with the T channel measurement periods.

In one possible design, the method further includes: and the first communication equipment sends the numerical value information of the M to at least one second communication equipment in the N second communication equipments.

In one possible design, the N satisfies 2^r+1＜N≤2^r+1+ r +1, said N₁＝2^r+1And r is an integer of 0 or more.

In one possible design, the first communication device schedules the second communication device in one of the subsets to transmit signals using different frequency domain resources and/or using different sequences for generating signals.

In a second aspect, an embodiment of the present application provides a communication method, including: the second communication device sends a signal in at least one of the T channel measurement periods according to configuration information of the T channel measurement periods, wherein the T channel measurement periods are configured for N second communication devices by the first communication device, the second communication device is one of the N second communication devices, N is an integer greater than or equal to 3, and T is an integer greater than or equal to 3.

In one possible design, the method further includes: the second communication device receives configuration information of the T channel measurement periods sent by the first communication device, where the configuration information of the T channel measurement periods includes at least one of start position information of the T channel measurement periods, length information of each channel measurement period, and cycle information of the T channel measurement periods, where T is an integer greater than or equal to 3.

In one possible design, the method further includes: the second communication device receives resource number information which is available for signal transmission in each of the T channel measurement periods and is sent by the first communication device, and at least one of resource information which is available for signal transmission in each of the T channel measurement periods, numerical information of N and identification information of the second communication device, where the second communication device is one of N communication devices, and N is an integer greater than or equal to 3; the second communication device sends a signal on at least one measurement period in the T channel measurement periods according to the configuration information of the T channel measurement periods, including: the second communication device transmits a signal in at least one of the T channel measurement periods according to the resource number information available for transmitting the signal in each of the T channel measurement periods, at least one of the resource information available for transmitting the signal in each of the T channel measurement periods, the numerical information of N and the identification information of the second communication device, and the configuration information of the T channel measurement periods. Optionally, the resource information includes frequency domain resource information and/or sequence information for generating a signal.

In a third aspect, embodiments of the present application provide a communication apparatus, which includes a processor and a memory coupled to the processor, where the processor is configured to support the communication apparatus to perform the method or steps performed by the first communication device in the method of the first aspect, for example, to schedule the second communication device for signal transmission, and the like. The memory is coupled to the processor for storing program instructions and data necessary for the communication device. The communication apparatus may further comprise a transceiver for transmitting the signaling or information that needs to be transmitted by the first communication device in the method of the first aspect.

In a fourth aspect, embodiments of the present application provide a communication device that includes a processor and a transceiver. The processor is configured to enable the communication apparatus to perform the method or steps performed by the second communication device in the method of the second aspect, e.g. to control the transceiver to perform signalling according to the configuration of the channel measurement period, etc. The transceiver is configured to support the communication apparatus to receive information or signaling received by the second communication device in the method of the second aspect, and to transmit signals. The communication device may also include a memory in its structure for coupling to the processor and storing program instructions and data necessary for the communication device.

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

In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium for storing computer software instructions for the first communication device, which includes a program designed to perform the method of the first aspect.

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium for storing computer software instructions for the second communication device, which includes a program designed to execute the method of the second aspect.

In an eighth aspect, an embodiment of the present application provides a computer program product, where the computer program product includes: a computer program (also referred to as code, or instructions), which when executed, causes a computer to perform the method of any one of the possible designs of the first or second aspect.

The technical scheme provided by the embodiment of the application aims to complete the link measurement between the D2D communication terminals by using the time-frequency domain resources as few as possible, and can be applied to realize the link measurement between the D2D communication terminals under various scenes of change of the number of the time-frequency domain resources or change of the number of the terminals participating in the D2D communication. Therefore, link measurement between the D2D communication terminals can be carried out under different time-frequency domain resource conditions and different D2D communication terminal numbers, and the time-frequency domain resources are occupied as little as possible, and further communication between the D2D communication terminals can be adaptively adjusted based on the link measurement result, so that the communication quality between the D2D communication terminals is guaranteed.

Drawings

The drawings that are required to be used in the description of the embodiments will be briefly described below.

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

fig. 2 is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 3 is a schematic diagram of a possible configuration of a channel measurement period according to an embodiment of the present disclosure;

fig. 4a is a schematic diagram of a second communication device that needs to be scheduled in different measurement periods when R is 2, N is 4, and T is 4;

fig. 4b is a schematic diagram of a second communication device that needs to be scheduled in different measurement periods when R is 2, N is 3, and T is 4;

fig. 5a is a schematic diagram of a second communication device that needs to be scheduled in different measurement periods when R is 3, N is 6, and T is 4;

fig. 5b and fig. 5c are schematic diagrams of a second communication device that needs to be scheduled in different measurement periods when R is 3, N is 5, and T is 4;

fig. 6a is a schematic diagram of a second communication device that needs to be scheduled in different measurement periods when R is 5, N is 11, and T is 6;

fig. 6b is a schematic diagram of a second communication device that needs to be scheduled in different measurement periods when R is 5, N is 9, and T is 6;

fig. 7 is a flowchart illustrating another communication method according to an embodiment of the present application;

fig. 8a is a schematic diagram of a second communication device that needs to be scheduled in different measurement periods when R is 2, M is 8, N is 4, T is 4, and K is 4;

fig. 8b is a schematic diagram of a second communication device that needs to be scheduled in different measurement periods when R is 2, M is 5, N is 4, T is 4, and K is 1;

fig. 9a is a schematic diagram of a second communication device that needs to be scheduled in different measurement periods when R is 3, M is 12, N is 6, T is 4, and K is 4;

fig. 9b is a schematic diagram of a second communication device that needs to be scheduled in different measurement periods when R is 3, M is 9, N is 6, T is 4, and K is 4;

fig. 10 is a flowchart illustrating a further communication method according to an embodiment of the present application;

fig. 11a is a schematic diagram of a second communication device requiring scheduling in different measurement periods when R is 6, M is 12, R (1) is 3, R (2) is 3, N is 6, M-N is 6, and T is T (1) and T (2) is 4;

fig. 11b is a schematic diagram of a second communication device that needs to be scheduled in different measurement periods when R is 7, M is 14, R (1) is 4, R (2) is 3, N is 8, M-N is 6, T is T (1) is 6, and T (2) is 4;

fig. 12a and 12b are schematic diagrams illustrating two possible signal transmission intervals provided by an embodiment of the present application;

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

Detailed Description

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

The network architecture and the service scenario described in the embodiment of the present application are for illustrating the technical solution of the embodiment of the present application, and do not constitute a limitation to the technical solution provided in the embodiment of the present application, and it can be known by a person skilled in the art that the technical solution provided in the embodiment of the present application is also applicable to similar technical problems along with the evolution of the network architecture and the appearance of a new service scenario.

The techniques described herein may be applicable to various Radio Access Technology (RAT) systems such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and other systems. Specifically, the technology provided in the present application may be applied to a wireless communication system such as an LTE system and a subsequent evolution system, for example, the 5th Generation mobile communication (5G), a New Radio (NR), or other communication systems that can support D2D communication, Machine to Machine (M2M) communication or V2X (vehicle-to-apparatus) communication, and is particularly applicable to a communication system that needs to perform link measurement between a terminal and a terminal, and may also be applied to a network system that needs to perform link measurement between a plurality of network devices, for example, a wireless Mesh network (wireless Mesh network), a multi-hop (multi-hop) network, and the like, and supports link measurement between a plurality of network devices, and may also be applied to a communication system that uses other wireless access technologies, for example, a Bluetooth (Bluetooth) communication system, a ZigBee communication system, a FlashLinQ communication system, a WiMedia communication system, a Wireless Local Area Network (WLAN), a near field communication (near field communication) system, etc., for supporting link measurement between a plurality of communication devices.

As shown in fig. 1, a communication system 100 according to an embodiment of the present application is provided. The technical solution provided in the embodiment of the present application may be applied to a communication system 100, where the communication system 100 at least includes at least one Base Station (BS) and a plurality of User Equipments (UEs). The UE may access the network device for communication, e.g., with the BS, over a wireless interface. When the UE is D2D enabled, D2D communication may also be enabled with another UE having D2D communication capability. A network device (e.g., a BS) may communicate with a user equipment and may also communicate with another network device, such as a macro base station and an access point. In fig. 1, five UEs, UE40A to UE40E, may all communicate with the BS, wherein three UEs, UE40A, UE40B and UE40C, also have D2D communication function, and the three UEs may communicate with D2D two by two. For example, D2D communication may be performed between the UE40A and the UE40B, and a D2D link may exist between the UE40A and the UE 40B. The D2D link between two UEs performing D2D communication may be referred to as a pair of D2D links, two UEs in a pair of D2D links may be a receiving end and a transmitting end, and in one transmission, one UE may be a transmitting end and the other UE may be a receiving end, for example, UE40A may be a transmitting end in the D2D link, and UE40B may be a receiving end in the D2D link. If both UEs support the simultaneous transceiving function, each UE may be both a transmitting end and a receiving end. For example, a D2D communication signal sent by one UE may be received by multiple UEs at the same time, and a UE may also receive a D2D communication signal sent by multiple UEs at the same time, where there is data transmission in different D2D links at the same time. Of course, more UEs may be included in communication system 100, and these UEs may or may not have D2D communication functionality. In the embodiment of the present application, multiple UEs may all be under the coverage of the same base station and served by the same base station, for example, in the example shown in fig. 1, five UEs, UE40A to UE40E, are all under the coverage of BS20 and served by BS 20. In this embodiment of the present application, a plurality of UEs may also be located under the coverage of different base stations, that is, UEs in different D2D links may be served by different base stations, and at this time, a communication system may include a plurality of base stations, and the plurality of base stations may perform information interaction, and perform uniform resource scheduling and management and the like through the information interaction. In addition to the communication system 100 shown in fig. 1, the technical solution provided in the embodiment of the present application may also be applied to communication systems with other structures, for providing link measurement between different communication devices, for example, link measurement between a network device and a network device, which is similar to link measurement between UEs in specific application, and is not described herein again.

In this application, the terms "network" and "system" are often used interchangeably, but those skilled in the art will understand the meaning. The user equipment to which the present application relates may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, control devices or other processing devices connected to a wireless modem, as well as various forms of UE, Mobile Station (MS), terminal (terminal) or terminal equipment (terminal equipment), and may also include a subscriber unit (subscriber unit), a cellular phone (cell phone), a smart phone (smart phone), a wireless data card, a Personal Digital Assistant (PDA) computer, a tablet computer, a wireless modem (mode), a handheld device (hand held), a laptop computer (laptop computer), a cordless phone (cordless phone) or a wireless local loop (MTC local loop, WLL) station, a Machine Type Communication (MTC) terminal, vehicle-mounted communication devices, and the like. For convenience of description, the above-mentioned devices are collectively referred to as User Equipment (UE) in this application. The network device related to the present application includes a Base Station (BS), a network controller or a mobile switching center, etc., where the device that directly communicates with the user equipment through a wireless channel is usually the base station, and the base station may include various macro base stations, micro base stations, relay stations, access points or Radio Remote Units (RRUs), etc., and of course, the network device that wirelessly communicates with the user equipment may also be other network devices having a wireless communication function, which is not limited in this application. The names of devices with base station functions may be different in different systems, such as the NR system called gNB, the LTE network called evolved NodeB (eNB or eNodeB), the third generation (3G) network called node B (node B), and so on.

Some general concepts or definitions referred to in the embodiments of the present application are explained below.

The "communication device" described in this application may be the user equipment or the network device described above.

The "resource" in the present application includes one or more of a time domain resource, a frequency domain resource, and a code domain resource, where the time domain resource represents the time domain resource and/or the frequency domain resource.

The "time unit" described herein refers to a time domain resource with a certain time length defined based on a time domain resource partitioning manner in a communication system, and can be set according to system requirements. A time unit may also contain at least one symbol, for example, an Orthogonal Frequency Division Multiplexing (OFDM) symbol, a single carrier frequency division multiple access (SC-FDMA) symbol, and the like. A time unit may also comprise at least one time slot (s lot), and a time slot may comprise at least one symbol. A time unit may also include at least one mini-s lot (mini-s lot), and a mini-slot may include at least one symbol. A Time unit may also contain at least one Transmission Time Interval (TTI), a TTI containing at least one symbol. One time unit may further include at least one subframe (subframe) including at least one symbol. A time unit may also contain at least one frame (frame), a frame contains at least one symbol, etc.

The "channel measurement period" or "period" as referred to herein refers to at least one unit of time for making link measurements between communication devices.

The "signal" described in this application may be a signal for carrying service data, a signal dedicated to measurement, or a signal for carrying signaling or messages that need to be transmitted by other systems, for example, a reference signal, an uplink and downlink control message, and the like.

The "reference signal" in the present application may be various types of reference signals, such as a channel Sounding Reference Signal (SRS), a demodulation reference signal (DMRS), a channel state information reference signal (CSI-RS), a Phase Tracking Reference Signal (PTRS), a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), or other reference signals or measurement signals defined as needed.

The "sequence for generating a signal" in the present application refers to a bit sequence for generating a transmission signal, and the sequence may be an original bit sequence for generating the transmission signal, a sequence for weighting or orthogonalizing the transmission signal, a scrambling sequence for scrambling the transmission signal, or another sequence used in generating the transmission signal, which is not limited in this application.

The "scheduling" in this application refers to instructing, by the first communication device, the second communication device to transmit data or transmit or receive a reference signal on a specific resource. The scheduling process may be implemented in different forms, for example, the process of allocating a specific resource may implicitly instruct the second communication device to transmit data or send or receive a reference signal, or may notify the second communication device to transmit data or send or receive a reference signal through signaling, or may preset to perform data transmission or send or receive a reference signal on a specific resource, and the like.

The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The technical solutions provided by the embodiments of the present application will be described in more detail below with reference to the accompanying drawings.

First, it is explained that, in the following embodiments, the first communication device may be a network device or a user device, and the second communication device may also be a network device or a terminal device. The first communication device may also be one of a plurality of second communication devices, i.e. the same network device acts as both the first communication device and one of the plurality of second devices, or the same user device acts as both the first communication device and one of the plurality of second communication devices. For example, in some scenarios, the user equipment a performs configuration of T channel measurement periods and scheduling of other N-1 user equipments as the first communication equipment, and at the same time, the user equipment a itself also performs transmission of a signal in at least one channel measurement period of the T channel measurement periods as one of the N user equipments. For simplicity of description, the following embodiments of the present application take the first communication device as a network device (e.g., BS) and the second communication device as a user equipment as an example, and when the first communication device and the second communication device are other types of communication devices, the application of the embodiments of the present application is not affected.

Fig. 2 is a communication method according to an embodiment of the present disclosure.

Optionally, in part 201, the first communication device configures T channel measurement periods for N second communication devices, where N is an integer greater than or equal to 2, and T is an integer greater than or equal to 2. So that the second communication device transmits a signal in at least one of the T channel measurement periods according to the configuration information of the T channel measurement periods.

Optionally, the configuration of the T channel measurement periods may be static, that is, the time domain resources occupied by the T channel measurement periods are preset by the first communication device and the second communication device. The configuration of the T channel measurement periods may also be semi-static or dynamic, that is, the first communication device may notify the second communication device of the configuration information of the T channel measurement periods in a semi-static or dynamic manner. The semi-static notification mode is that the first communication device notifies the second communication device of the configuration information of the T channel measurement periods at intervals or according to the needs of the system, and the second communication device sends a signal according to the configuration information notified last time when the first communication device does not update the configuration information; or the semi-static notification mode is that the first communication device notifies the second communication device of default configuration information of T channel measurement periods as required, the second communication device sends a signal according to the default configuration information when the first communication device does not update the configuration information, and when the first communication device notifies new configuration information of the second communication device of T channel measurement periods again as required, the second communication device sends the signal according to the new configuration information in the next T channel measurement periods, and then sends the signal according to the default configuration information again. The dynamic notification mode is that the first communication device notifies the second communication device of the configuration information as needed, and the second communication device transmits a signal according to the configuration information only when receiving the configuration information.

Optionally, the first communication device configures T channel measurement periods, which may be completed by sending configuration information, that is, the first communication device sends the configuration information of the T channel measurement periods to at least one of the N second communication devices. The second communication device learns the configuration of the T channel measurement periods by receiving the configuration information. Specifically, the configuration information of the T channel measurement periods may include: at least one of start position information of the T channel measurement periods, length information of each of the T measurement periods, and cycle information of the T channel measurement periods. The configuration information may be transmitted through a physical layer message, for example, a Downlink Control Information (DCI), a Medium Access Control (MAC) message, for example, a MAC (MAC element), a Radio Resource Control (RRC) message, and the like, which is not limited in this application.

In one example, the BS configures T channel measurement periods for N user equipments, and the T channel measurement periods are used for the N user equipments to perform channel measurement between each other, for example, perform channel measurement of D2D link.

Taking fig. 3 as an example, a possible configuration manner of the channel measurement period in the embodiment of the present application is given. Wherein, the value of T is 4, the T axis is a time axis, UE1, UE n represents different UEs, and T1 to T4 represent 4 channel measurement periods. Each box (e.g., 301 or 302) in fig. 3 indicates whether a UE transmits a signal during a channel measurement period, wherein the shaded boxes indicate that the UE transmits a signal during the measurement period, and the unshaded boxes indicate that the UE can receive or measure signals transmitted by other UEs during the measurement period, e.g., box 301 indicates that the UE n transmits a signal during the measurement period T3, and box 302 indicates that the UE0 can receive or measure signals transmitted by other UEs (e.g., UE3) during the measurement period T3. It should be noted that the UE represented by the unshaded block (e.g. 302) may not receive or measure the signal transmitted by other UEs during the measurement period, and whether the UE transmits the signal during the measurement period may be performed according to the scheduling of the BS, or may be arranged according to the UE's own requirements, for example, the UE0 in fig. 3 does not need to measure the signal of the UE3 during the T3 measurement period, then the UE0 may choose not to receive the signal of the UE3, and then the UE0 may communicate with the BS, for example, transmit data to the BS or receive data transmitted by the BS, or communicate with other UEs except for the UEs 1 to UEN. In the following embodiments of the present application, the blocks similar to 301 and 302 in fig. 3 are still used to describe scheduling for different UEs in different measurement periods, and the meaning represented by each block refers to the above description, which is not repeated herein.

Time T0 and time T1 in fig. 3 are start times of two sets of T channel measurement periods, respectively, the BS may notify the UE of an absolute time value of T0 and/or T1, for example, x time y minutes, z seconds, q milliseconds, or may notify the UE of the position of T0 and/or T1 on a time axis based on a time unit division rule of the communication system, for example, when T0 and/or T1 is notified based on a division of symbols, the BS may notify the UE of T0 and/or T1 as a start time (or an end time) of an x-th symbol, where x is a symbol number (symbol number or symbol index) in the communication system, and of course, may indicate T0 and/or T1 based on a system-defined time unit such as s lot or mini-s lot or TTI or subframe. T _1 in fig. 3 is a time length occupied by one channel measurement period, and the BS may notify the UE of an absolute time length occupied by t _1, for example, x milliseconds, or may notify the time length occupied by t _1 based on a time unit division of the communication system, for example, t _1 is a length of x symbols (or time slot, minislot, subframe, TTI, etc.). Optionally, the time lengths of different channel measurement periods in the T channel measurement periods may be the same or different, and the value of T _1 may be different under different conditions, and the BS may notify the UE of different T _1 by using a similar method. Alternatively, the channel measurement between the N UEs may be performed in a periodic manner, and then the BS may further notify the UEs of periodic information for each set of T channel measurement periods. T _0 in fig. 3 denotes a repetition period of each set of T channel measurement periods, and the BS may inform the length information of T _0 to the UE in a different manner, similar to T _ 1. Optionally, the T channel measurement periods may be continuous (for example, a group of T0 to T3 on the left side in fig. 3), or may be discontinuous (for example, a group of T0 to T3 on the right side in fig. 3), and when the T channel measurement periods are discontinuous, each channel measurement period may be separated by a certain time length, or each partial channel measurement period may be separated by a certain time length. When T channel measurement periods are not consecutive, the BS may notify the UE of the duration of the interval between the channel measurement periods, taking fig. 3 as an example, the BS may notify the duration of T _2 or T _3 to the UE, so that the UE may determine the interval between the channel measurement periods, and similar to T _1, the BS may notify the length information of T _2 or T _3 to the UE in a different manner. As can be known to those skilled in the art, for the above start time information, the length information of the measurement periods, the period information, the interval time information between the measurement periods, etc., the BS may notify the UE through other forms and methods, which is not limited in this application.

In an example, some of the N UEs may further obtain the configuration information of the T channel measurement periods by receiving information sent by other UEs. That is, the first communication device may transmit the configuration information of the T channel measurement periods to a part of the N second communication devices, and the second communication devices may transmit the configuration information to the remaining second communication devices.

Optionally, in part 203, the first communication device may further send at least one of the following information to at least one of the N second communication devices: information of the number of resources available for transmitting signals at each of the T channel measurement periods, information of the value of N, and identification information of the at least one second communication device. The second communication device determines a period used for transmitting the signal by itself or a resource used when transmitting the signal according to at least one of the above information.

Optionally, the resource information includes frequency domain resource information and/or sequence information for generating a signal. The number of resources available for the transmission channel may be the number of available frequency domain resources, or the number of sequences available for generating signals, or the number of the available frequency domain resources and the sequences available for generating signals after combining, for example, when the number of available frequency domain resources is x and the number of sequences available for generating signals is y, the number of the available and generated sequences after combining may be any value smaller than the product of x and y. The first communication device may notify the second communication device of all available frequency domain resources and/or all available sequences for generating signals, and preset a combination relationship between the two, and the second communication device may select the frequency domain resources used when transmitting the signals and the sequences for generating the signals according to the preset combination relationship. In one example, the frequency domain resource information may be notified by using available frequency domain bandwidth, available frequency domain resource units, a preset frequency domain comb structure, and the like, where the frequency domain resource units may be frequency domain resources (e.g., subcarriers) divided according to system requirements. Those skilled in the art can know that the information of the frequency domain resource and the sequence resource can be performed in various ways, which is not limited in this application.

Optionally, the value information of N and/or the identification information of the at least one second communication device may enable the second communication device to determine one or more channel measurement periods used for transmitting the signal in the T channel measurement periods and resources used for transmitting the signal. In one example, the first communication device and the second communication device may be preset, one or more channel measurement periods used when each of the N second communication devices transmits a signal and resources used when transmitting a signal, and the second communication device may determine, according to the preset, the channel measurement period and/or resources to be used when transmitting a signal, in combination with the value of N and/or the second communication device identifier. The identification information of one second communication device may indicate that the one second communication device is within the group of the N second communication devices. The first communication device may send its own identification information only to one second communication device, or may send the identification information of other second communication devices among the N second communication devices to the one second communication device.

Optionally, the information related in the part 203 may be sent by using different signaling or messages, or may be forwarded by the second communication device, or may be semi-static or dynamic, and a specific implementation manner is similar to the sending of the configuration information described in the part 201, and is not described here again.

Optionally, the information related in part 203 may also be static, that is, the first communication device and the second communication device preset at least one of resource number information that can be used for transmitting a signal in each of the T channel measurement periods, resource information that can be used for transmitting a signal in each of the T channel measurement periods, the numerical information of N, and identification information of the at least one second communication device.

It should be noted that, in the embodiment of the present application, the order of the

parts

201 and 203 in fig. 2 is not limited, the configuration of the T channel measurement periods may be performed first, or the information related to the part 203 may be sent first, and if the part 201 relates to sending the configuration information, the information related to the part 203 may also be sent simultaneously using the same signaling as the configuration information related to the part 201. Similarly, in all flowcharts related in the embodiments of the present application, without special description, the order of the steps may be adjusted, and different steps may also be combined and performed, which is not described in detail later.

At element 202, the first communications device schedules, for each of the T channel measurement periods, a second communications device in a different subset of the N second communications devices to transmit signals. Optionally, the first communication device schedules the second communication device in one of the subsets to transmit signals using different frequency domain resources and/or using different sequences for generating signals. Optionally, the second communication device transmitting the signal in different channel measurement periods may use the same frequency domain resource and/or the same sequence for generating the signal. Optionally, the first communication device may notify each of the second communication devices of one or several measurement periods and resources used during these measurement periods that should be used by the second communication device to transmit the signal, and one or several measurement periods and resources used by other communication devices of the N second communication devices to transmit the signal. The first communication device and the second communication device may also preset subset division modes and resource usage modes in different scenarios, so that the second communication device obtains the configuration conditions of the T channel measurement periods, that is, obtains the subset division modes and resource usage modes of the N second communication devices, and combines the value of N and the identification information of each second communication device in the N second communication devices, so as to obtain one or more measurement periods and used resources used when each UE sends a signal.

Since the available resources in the communication network and the number of communication devices that need to perform inter-link measurements are all changing, a first communication device is required to perform inter-link measurements based on the available resources and a second communication device that needs to perform inter-link measurementsThe number of communication devices takes into account the specific resource allocation and the scheduling of the second communication device. The following describes a specific scheduling method provided in this embodiment with reference to specific drawings. For convenience of explanation, first, a definition is made as follows, where N denotes the number of second communication devices that need to perform inter-link measurement, T denotes the number of channel measurement periods that are required in one measurement cycle, and R denotes the maximum number of resources available in one channel measurement period, which may be the number of frequency domain resources available in one channel measurement period, or the number of sequences of generated signals available in one channel measurement period, or the number of available resources obtained by combining the two, and the maximum number of resources may be understood as the maximum number of second communication devices that can support signal transmission in one channel measurement period. N, T and R are integers which are more than or equal to 2. In the embodiment of the present application, link measurement between every two second communication devices in the N second communication devices is involved, and therefore, whether the maximum available resource number R satisfies R ═ 2 or not is determined^r(where R is an integer greater than or equal to 0), and the number of N and R, affect the scheduling of the second communication device in different channel measurement periods. Therefore, in the embodiment of the present application, R is 2 or not^r(where R is an integer greater than or equal to 0), and the number relationship between N and R, a specific scheduling manner is described.

Scene a 1: when R is 2^r(where R is an integer of 0 or more), N ═ 2R ═ 2^r+1In this case, the first communication device may configure T2 log for N second communication devices₂N-2 (r +1) channel measurement periods.

At this time, the first communication device schedules, at each of the T channel measurement periods, second communication devices in a different subset of the N second communication devices to transmit signals, the subset satisfying: each of the subsets includes less than or equal to N/2 second communication devices in the first group of second communication devices, the first group of second communication devices included in each of the subsets are not identical, and any one of the second communication devices in the first group of second communication devices belongs to at least two different subsets, so that each of the N second communication devices is guaranteed to have an opportunity to receive signals transmitted by other N-1 second communication devices. The second communication devices in the two subsets are not completely the same, including that the number of the second communication devices included in the two subsets is different, or at least one of the second communication devices included in one of the subsets is not included in the other subset. In fig. 4a, a subset of N second communication devices that need to be scheduled in different measurement periods is given by taking the case of R-2, N-4, and T-4 as an example. Taking the first communication device as the BS and the second communication device as the UE as an example, the BS schedules the UE0 and the UE2 for signal transmission during a time period T0, schedules the UE1 and the UE3 for signal transmission during a time period T1, schedules the UE0 and the UE1 for signal transmission during a time period T2, and schedules the UE2 and the UE3 for signal transmission during a time period T3. The UE that is not scheduled in each measurement period may decide whether to receive the signal transmitted by the scheduled UE according to the requirement, for example, whether to measure the D2D link between itself and the UE that is currently transmitting the signal, or according to the scheduling of the system, so as to perform the link measurement. In an example, after knowing the configuration information of the T channel measurement periods, any UE of the N UEs may determine the scheduling manner as shown in fig. 4a according to the characteristics of the second subset of communication devices, and further determine, by combining the value of N, UE identities in the group of the N UEs, available resources in each measurement period, and usage rules of the available resources among the N UEs, a period and a resource that should be used by each UE to transmit a signal. In another example, the BS may inform each UE of the time period and resource used for transmitting the signal and the time period and resource used for transmitting the signal by other UEs among the N UEs, and the UE only needs to transmit and receive the signal according to the notification of the BS.

In one example, in one channel measurement period, different UEs transmit signals using different frequency domain resources and/or sequences used to generate the signals. For example, in the T0 period, the UE0 and the UE2 may transmit signals using the same frequency domain resources but different sequences for generating signals, the UE0 and the UE2 may also transmit signals using different frequency domain resources but the same sequences for generating signals, and the UE0 and the UE2 may also transmit signals using different frequency domain resources and different sequences for generating signals. In one example, the UEs in different subsets may use the same resource or different resources in different channel measurement periods, e.g., the resource used by UE0 and UE2 in T0 period and the resource used by UE1 and UE3 in T1 period may be the same, may not be the same, or may be completely different. In a specific example, the UE may determine, according to a preset resource selection principle, a resource to be used for transmitting a signal, and determine a location of a resource that needs to receive the signal. For example, each frequency domain resource may have a frequency domain resource identifier, and each sequence of a signal generated by a user may also have a sequence identifier, and when the UE determines a resource, the UE may determine the resource identifier used or the resource identifier required to receive the signal by determining a combination of the frequency domain resource identifier and the sequence identifier. For example, the available frequency domain resource identifier is (1, 2), the available sequence identifier is (3, 4), and the available resource identifier is ID1 ═ 1, 3, ID2 ═ 1, 4, ID3 ═ 2, 3, and ID4 ═ 2, 4. A corresponding relationship between the UE identifier and the resource identifier may be preset, for example, the UE with the UE identifier 1 may use the resource indicated by the ID1, the user with the UE identifier 2 may use the resource indicated by the ID2, and the specific corresponding relationship between the UE identifier and the resource identifier may be set as required, which is not limited in the present application.

It should be noted that, for the sake of simplicity in the drawings, the lengths of T0 to T3 in fig. 4 are the same and continuous, but in practical applications, T0 to T3 may be measurement periods of different lengths, or may not be continuous, and the relationship between them and the specific configuration may refer to the description of fig. 3 about the channel measurement periods. The characteristics and configuration manner of the T channel measurement periods in the embodiment of the present application may refer to the description about the channel measurement periods in fig. 3, and are not repeated in the following.

Scene a 2: when R is 2^r(where R is an integer greater than or equal to 0), and when N < 2R, the first communication device may be N second communication devicesConfiguration T is 2log₂N-2 (r +1) channel measurement periods.

In this scenario, the first communication device and the second communication device may still divide the subset according to scenario a1, i.e., N' 2R 2^r+1The second communication devices divide the subsets, and the difference is that in each measurement period, only the second communication devices belonging to the N second communication devices in each subset need to be scheduled. In fig. 4b, a subset of N second communication devices that need to be scheduled in different measurement periods is given by taking the case of R-2, N-3, and T-4 as an example. Comparing fig. 4a and fig. 4b, when scheduling 3 UEs, the subset can still be divided according to 4 UEs, and when actually scheduling, only the fourth UE (UE3) needs to be removed from scheduling. For a specific scheduling implementation, reference may be made to the description in scenario a 1.

Scene B1: when R is 2^r+1 (where r is an integer of 0 or more), N2^r+1The first communication device may use 2 of the R resources^rConfiguring T2 log for N second communication devices₂N-2 (r +1) channel measurement periods. The specific configuration and scheduling manner may refer to the description in scenario a1 or scenario a 2.

Scene B2: when R is 2^r+1 (where r is an integer of 0 or more), 2^r+1＜N≤2^r+1+ r +1, the first communication device may be paired with N of the N second communication devices₁＝2^r+1The second communication device (denoted as the first group of second communication devices) uses 2 in accordance with the scenario a1^rScheduling the resources for N of the N second communication devices₂R +1 second communication devices (denoted as second group of second communication devices) use 1 resource for scheduling, and configure T2 log for the N second communication devices₂N₁2(r +1) channel measurement periods, where N is N₁+N₂。

At this time, the first communication device schedules, for each of the T channel measurement periods, a second communication device of a different subset of the N second communication devices to transmit a signal, the subset satisfying: each of said subsetsLess than or equal to N1/2 second communication devices of the first set of second communication devices are included, and the first set of second communication devices included in each of the subsets are not identical, and any one of the first set of second communication devices belongs to at least two different of the subsets, and any one of the second set of second communication devices belongs to at least two different of the subsets, at least two subsets to which any one of the second set of second communication devices belongs being different from the subsets to which other of the second set of second communication devices belong, and all of the first set of second communication devices are included in the two subsets to which any one of the second set of second communication devices belongs. The first communication device schedules different subsets of the second communication devices meeting the above conditions to transmit signals in each time interval, and it can be ensured that each of the N second communication devices has an opportunity to receive signals transmitted by other N-1 second communication devices, so that it can be ensured that each of the second communication devices in the first group of second communication devices can implement link measurement between each two, and each of the second communication devices in the second group of communication devices can also implement link measurement between each two and each of the second communication devices in the first group of second communication devices. In fig. 5a, a subset of N second communication devices that need to be scheduled in different measurement periods is given by taking the case of R-3, N-6, and T-4 as an example. In this example, N ═ 2^r+1+r+1，N₁＝4，N ₂2, UE 0-UE 3 belong to a first group of second communication devices, and UE4 and UE5 belong to a second group of second communication devices. For the UEs 0 to 3, the scheduling of the BS in different measurement periods uses the scheduling manner in the scenario a (in this example, the same as the case shown in fig. 4 a), for the

UEs

4 and 5, only one of the

UEs

4 and 5 can be scheduled in each measurement period, and each of the

UEs

4 and 5 needs to be scheduled at least twice (i.e., belong to at least two of the subsets), and in the at least twice scheduling, each of the UEs 0 to 3 (the first group of second communication devices) needs to transmit a signal, so as to ensure that the

UEs

4 and 5 can have a chance to receive the signal transmitted by each of the UEs 0 to 3, and simultaneously, the

UEs

4 and 5 can also have a chance to receive the signal transmitted by each of the UEs 0 to 3It may be ensured that the signals transmitted by each of UE4 and UE5 have an opportunity to be received by each of UE0 through UE 3. In fig. 6a, a subset of N second communication devices that need to be scheduled in different measurement periods is given by taking the case of R-5, N-11, and T-6 as an example. In this example, N ═ 2^r+1+r+1，N₁＝8，N ₂3, UE 0-UE 7 belong to a first group of second communication devices, and UE 8-UE 10 belong to a second group of second communication devices. For UE 0-UE 7, scheduling by the BS at different measurement periods uses the scheduling approach in scenario a. For the UEs 8 through 10, only one of the UEs 8 through 10 may be scheduled in each measurement period, and each of the UEs 8 through 10 should be scheduled at least twice (i.e., at least belonging to two of the subsets), and in the at least twice scheduling, each of the UEs 0 through 7 (the first group of second communication devices) should transmit a signal, so as to ensure that each of the UEs 8 through 10 has an opportunity to receive the signal transmitted by each of the UEs 0 through 7, and also ensure that the signal transmitted by each of the UEs 8 through 10 has an opportunity to be received by each of the UEs 0 through 7. In fig. 5b and fig. 5c, the case of R-3, N-5, and T-4 is taken as an example, and a subset of N second communication devices that need to be scheduled in different measurement periods is given. In this example, N < 2^r+1+r+1，N₁＝4，N ₂1, UE 0-UE 3 belong to a first group of second communication devices, and UE4 belongs to a second group of second communication devices. In fig. 5b, the UE4 belongs to 2 subsets and transmits signals in the time periods T0 and T1, respectively, so that each UE0 to UE3 has an opportunity to receive the signal transmitted by the UE4, and the UE4 has an opportunity to receive the signal transmitted by each UE0 to UE3 in the time periods T2 and T3. The UE4 in fig. 5c belongs to 3 subsets, and signals are transmitted at T0, T2 and T3, respectively, in this case, all UEs from UE0 to UE3 can receive signals transmitted by UE4 in two periods of T2 and T3, and when UE4 transmits signals in T0 period, UE1 and UE3 can receive signals, so as to enhance reliability of signal measurement for UE4, UE4 has an opportunity to receive signals transmitted by UE1 and UE3 in T1 period, and if UE4 can implement full duplex, signals transmitted by UE0 and UE2 can also be received in other periods. In fig. 6b, the case of R-5, N-9, and T-6 is taken as an example, and N-th measurement periods requiring scheduling are givenA subset of two communication devices. In this example, N < 2^r+1+r+1，N₁＝8，N ₂1, UE 0-UE 7 belong to a first group of second communication devices, and UE8 belongs to a second group of second communication devices. For UE0 to UE7, the scheduling of the BS at different measurement periods uses the scheduling approach in scenario a, and for UE8, its transmission signals are scheduled at T0 and T1 periods.

Fig. 7 is another communication method provided in the embodiment of the present application.

Optionally, in the 701, the first communication device configures T channel measurement periods for the N second communication devices.

A first communications device schedules, at each of the T channel measurement periods, second communications devices in a different subset of the N second communications devices to transmit signals 702.

Optionally, in part 703, the first communications device may further send at least one of the following information to at least one of the N second communications devices: information of the number of resources available for transmitting signals per measurement period, information of the value of N and identification information of the at least one second communication device.

Reference may be made to the embodiments of parts 201 to 203 hereinabove for specific embodiments of parts 701 to 703.

When the communication network includes more second communication devices that need to perform link measurement between each other but does not have more available resources, the first communication device needs to configure more channel measurement periods for the more second communication devices, thereby ensuring link measurement between each two of the plurality of second communication devices. For the above scenario, the communication method corresponding to fig. 7 may further include a portion 704 and a portion 705.

Optionally, in part 704, the first communication device schedules, in each of K channel measurement periods, second communication devices in different subsets of M-N second communication devices except the N second communication devices among the M second communication devices to transmit signals, where the K channel measurement periods are configured by the first communication device for the M-N other second communication devices, and the K channel measurement periods do not coincide with the T channel measurement periods, K is an integer greater than or equal to 1, and at least one of the K channel measurement periods is used for receiving, by at least one of the N second communication devices, a signal transmitted by at least one of the M-N other second communication devices. The N second communication devices are a part of M second communication devices, and M is an integer greater than N. The K channel measurement periods are not overlapped with the T channel measurement periods, which means that any one of the K channel measurement periods is not included in the T channel measurement periods. Optionally, the K channel measurement time periods may also be used for link measurement between the other M-N second communication devices, and the first communication device configures a specific implementation manner of the K channel measurement time periods for the M-N second communication devices, and a specific scheduling manner of the M-N second communication devices in the K channel measurement time periods, and may also apply the specific implementation manner in the embodiment corresponding to fig. 2. Optionally, the first communication device configures, for the M-N second communication devices, K channel measurement periods, which may be performed simultaneously with the 701 part, or before the 701 part, and the K channel measurement periods are configured, if transmission of configuration information is involved, or may be transmitted using the same signaling or message as the configuration information of the T channel measurement periods in the 701 part. If the resource information related to the K channel measurement periods needs to be sent, the same signaling or message may also be used for sending with the message in section 703. Optionally, the first communication device may further send the configuration information of the K channel measurement periods to the N second communication devices, so that the N second communication devices receive, according to a requirement or according to a schedule, signals sent by the M-N second communication devices.

Optionally, in part 705, the first communications device sends the value information of M to at least one of the N second communications devices. The N second communication devices may determine, according to the value of M and a preset subset division manner, a scheduling manner of the first communication device to the M-N second communication devices in the K channel measurement periods, so as to receive, according to a requirement or according to a scheduling, a signal sent by the M-N second communication devices.

Next, the specific scheduling manner provided in this embodiment will be described with reference to the specific drawings by continuing to use the definitions of R, T, and N in the foregoing. The N second communication devices are part of the M second communication devices, and at least one of the N second communication devices needs to perform link measurement with at least one of the other M-N second communication devices among the M second communication devices.

Scene a 3: when R is 2^r(where R is an integer greater than or equal to 0), N ≦ 2R, and M > 2R, the first communication device may configure T ═ 2log for the N second communication devices₂N-2 (r +1) channel measurement periods, and K channel measurement periods are configured for the remaining M-N second communication devices. The K channel measurement periods do not coincide with the T channel measurement periods, such that at least one of the N second communication devices can receive a signal transmitted by at least one of the remaining M-N second communication devices over at least one of the K channel measurement periods.

At this time, the scheduling manner of the first communication device to the N second communication devices may use the scheduling manner in the scenario a1 or the scenario a2 over the T channel measurement periods according to the relationship of N and R. The scheduling manner of the second communication device to the remaining M-N second communication devices may also use the scheduling manner in scenario a1 or scenario a2 over the K channel measurement periods according to the relationship between M-N and R. Optionally, the first communication device may notify at least one of the N second communication devices to receive the signal transmitted by at least one of the M-N second communication devices during at least one of the K channel measurement periods. Specifically, the first communication device may notify at least one of the N second communication devices, configuration information of the K channel measurement periods, resource information on each of the K channel measurement periods, a second communication device that transmits a signal on each of the K channel measurement periods, and information of resources used when the second communication devices transmit a signal, so that at least one of the N second communication devices may receive a signal transmitted by at least one of the remaining M-N second communication devices in at least one of the K channel measurement periods. Of course, the N second communication devices may also know, in a preset manner, the second communication device that transmits the signal in each of the K channel measurement periods and the resource used by the second communication device, for example, the second communication device may determine, according to a preset subset division principle, the second communication device that transmits the signal in each of the K channel measurement periods and the resource used by the second communication device in combination with the numerical information of M.

In fig. 8a, the case where R is 2, M is 8, N is 4, T is 4, and K is 4 is taken as an example, and the second communication device that needs to be scheduled in different measurement periods is given. In this example, UEs 0-3 belong to the N second communication devices to which UE 4-7 belong to the remaining M-N second communication devices, T0-T3 are the T channel measurement periods, and T4-T7 are the K channel measurement periods. The scheduling modes of the UEs 0 to 3 from T0 to T3 are the scheduling modes of the scenario a1, and the scheduling modes of the UEs 4 to UE7 from T4 to T7 are also the scheduling modes of the scenario a 1. Each UE0 to 3 has an opportunity to receive a signal transmitted by each UE4 to 7 in the time period from T4 to T7, and each UE4 to 7 also has an opportunity to receive a signal transmitted by each UE0 to UE3 in the time period from T0 to T3, so that links between each two UEs in the M UEs can be measured. In an example, one or more of the UEs 0 through 3 may not need to receive signals transmitted by all of the UEs 4 through 7, and the one or more UEs may not need to receive signals transmitted by UEs 4 through 7 in each period from T4 through T7, and the period without receiving signals transmitted by UEs 4 through 7 may be used for transmission of other traffic data, so as to improve resource utilization. For example, the UE0 may only need to receive signals transmitted by the UE4, the UE0 may receive signals transmitted by the UE4 at T4 and/or T6, and the UE0 may transmit other traffic data in other time periods. For another example, after two time periods of T4 and T5, each UE0 to UE3 has had an opportunity to receive signals transmitted by each UE from EU4 to UE7, and if the measurement is completed at this time, then UE0 to UE3 may also perform transmission of other traffic data during time periods of T6 and T7. In fig. 8b, the second communication device that needs to be scheduled in different measurement periods is given by taking the case where R is 2, M is 5, N is 4, T is 4, and K is 1 as an example. In this example, UE 0-UE 3 belong to the N second communication devices, UE4 belong to the remaining M-N second communication devices, T0-T3 are the T channel measurement periods, and T4 is the K channel measurement periods. The scheduling modes of the UEs 0 to 3 from T0 to T3 are the scheduling modes of the scenario a1, and the scheduling mode of the UE4 from T4 is the scheduling mode of the scenario a 2. The UE4 may receive signals transmitted by each of the UEs 0 through 3 during the time period T0 through T3, and each of the UEs 0 through 3 may receive signals transmitted by the UE4 during the time period T4, thereby completing link measurements between two UEs of the M UEs.

Scene B3: when R is 2^r+1 (where r is an integer of 0 or more), 2^r+1＜N≤2^r+1+r+1，M＞2^r+1When + r +1, the first communication device may configure T channel measurement periods for the N second communication devices, and configure K channel measurement periods for the remaining M-N second communication devices. The K channel measurement periods do not coincide with the T channel measurement periods, such that at least one of the N second communication devices can receive a signal transmitted by at least one of the remaining M-N second communication devices over at least one of the K channel measurement periods.

At this time, the scheduling manner of the first communication device to the N second communication devices may use the scheduling manner in scenario B2 over the T channel measurement periods according to the relationship between N and R. The scheduling manner of the second communication device to the remaining M-N second communication devices may also use the scheduling manner in scenario B1 or scenario B2 over the K channel measurement periods according to the relationship between M-N and R. Similar to the a3 scenario, at least one of the N second communication devices may also determine the scheduling manner of the remaining M-N second communication devices through the scheduling of the first communication device or a preset manner, so as to receive the signal transmitted by at least one of the remaining M-N second communication devices over the K channel measurement periods.

In fig. 9a, the case where R is 3, M is 12, N is 6, T is 4, and K is 4 is taken as an example, and the second communication device that needs to be scheduled in different measurement periods is given. In this example, UEs 0-5 belong to the N second communication devices to which UE 6-11 belong to the remaining M-N second communication devices, T0-T3 are the T channel measurement periods, and T4-T7 are the K channel measurement periods. The scheduling modes of the UEs 0 to 5 from T0 to T3 are the scheduling modes of the scenario B2, and the scheduling modes of the UEs 6 to UE11 from T4 to T7 are also the scheduling modes of the scenario B2. In fig. 9b, the second communication device that needs to be scheduled in different measurement periods is given by taking the case where R is 3, M is 9, N is 6, T is 4, and K is 4 as an example. In this example, UEs 0-5 belong to the N second communication devices to which UE 6-8 belong to the remaining M-N second communication devices, T0-T3 are the T channel measurement periods, and T4-T7 are the K channel measurement periods. The scheduling modes of the UEs 0 to 5 from T0 to T3 are the scheduling modes of the scenario B2, and the scheduling modes of the UEs 6 to UE11 from T4 to T7 are the scheduling modes of the scenario B1. The signal receiving manner between the N second communication devices and the M-N second communication devices is similar to that described in fig. 8a and 8b, and is not repeated.

Fig. 10 is a diagram of another communication method according to an embodiment of the present application.

Optionally, in part 1001, the first communications device configures T channel measurement periods for the N second communications devices.

A portion 1002 for the first communication device to schedule, for each of the T channel measurement periods, a second communication device in a different subset of the N second communication devices to transmit signals.

Optionally, in part 1003, the first communications device may further send at least one of the following information to at least one of the N second communications devices: information of the number of resources available for transmitting signals per measurement period, information of the value of N and identification information of the at least one second communication device.

Specific embodiments of portions 1001 through 1003 may refer to embodiments of portions 201 through 203 above.

When the number of resources R available for link measurement between the second communication devices in the communication network does not satisfy R-2^rAlso, R is not 2^r+1, the first communication device may group R such that the number of resources included in each resource group satisfies R (i) ═ 2^rOr R (i) ═ 2^r+1, where r (i) represents the maximum available resource quantity in the ith resource group, i is an integer greater than or equal to 0, it should be noted that r (i) represents only the resource quantity, and a specific resource may belong to one of r (i) in a certain channel measurement period and may belong to one of r (j) in another channel measurement period, that is, only the maximum available resource quantity of the same group of resources is the same in different channel measurement periods, and the specific available resources included in the group of resources may be different in different channel measurement periods. Then, according to the total number M of the second communication devices that need to perform link measurement between two and two, each group r (i) is allocated with a corresponding number n (i) of the second communication devices, and using at least one of the scenario a1, the scenario a2, the scenario A3, the scenario B1, the scenario B2, and the scenario B3 in the above embodiments to configure a channel measurement period t (i) for each group n (i) of the second communication devices, it is to be noted that, in different channel measurement periods, the grouping of the second communication devices is invariant, that is, in different channel measurement periods, a specific second communication device included in n (i) of the second communication devices is the same, or a certain second communication device belongs to one of n (i) of the second communication devices in a certain channel measurement period, and then the second communication device also belongs to one of n (i) of the n second communication devices in other channel measurement periods of the current measurement And (4) respectively. Wherein N (i) represents the number of second communication devices using R (i) resources to transmit signals, and Σ_iN (i) ═ M, t (i) indicates that the first communication device is configured by n (i) second communication devices using r (i) resource transmission signalsThe number of channel measurement periods. Since each group of n (i) second communication devices may use r (i) resources, t (i) may be multiplexed in the time domain for different values of i, that is, at least one of t (i) and t (j) channel measurement periods is the same channel measurement period, where i and j are integers greater than or equal to 0 and i is not equal to j. On this basis, the first communication device only needs to configure at least one channel measurement time period for the M second communication devices, and the at least one channel measurement time period is not overlapped with any t (i), so that it is ensured that each second communication device among the M second communication devices has an opportunity to receive signals of all other second communication devices, that is, all second communication devices among the M second communication devices can perform link measurement with every other second communication device. For the above scenario, the communication method corresponding to fig. 10 may further include

parts

1004, 1005, and 1006.

Optionally, in part 1004, the first communication device configures at least one channel measurement period for M second communication devices, where the at least one channel measurement period is not overlapped with the T channel measurement periods, the N second communication devices are part of the M second communication devices, and M is an integer greater than N. The first communication device may simultaneously schedule the subset of N second communication devices and the subset of originating M-N second communication devices over at least one of the T channel measurement periods. Therefore, the first communication device only needs to configure at least one channel measurement time interval for the M second communication devices outside the T channel measurement time intervals, and link measurement between every two of the M second communication devices can be guaranteed. It should be noted that, in part 1004, N may be understood as one of N (1) above, and M — N may be understood as N (2) above, in which case R is divided into two groups R (1) and R (2). If R (1) and/or R (2) still do not satisfy R (i) ═ 2^rAlso does not satisfy R (i) ═ 2^r+1, R (1) and/or R (2) may be further grouped to obtain R (3), R (4), and corresponding M may also be divided into N (1), N (2), N (3), and N (4). When R is divided into more than two groups, each group R (i) resources, N (i) and T (i) allocating and scheduling methodSince the formula is not substantially different from the configuration and scheduling manner when R is divided into two groups, the embodiment of the present application will be described by taking the example of dividing R into two groups.

In one example, when R does not satisfy R (i) ═ 2^rAlso does not satisfy R (i) ═ 2^r+1, the first communication device may group R into R (1) ═ floor (R/2) and R (2) ═ R-R (1), where f1oor () represents rounding down. If R (1) and/or R (2) still do not satisfy R (i) ═ 2^rAlso does not satisfy R (i) ═ 2^r+1, R (1) and/or R (2) may continue to be grouped using R (k) ═ floor (R (.j)/2) and R (p) ═ R (j) -R (k), where j is 1 or 2. If R (k) and/or R (p) still do not satisfy 2^rNor satisfy 2^r+1, R (k) and/or R (p) may continue to be grouped using the same method as for R (1). After the number r (i) of resources in each group is determined, the number n (i) of second communication devices that can be supported by each group r (i), and t (i) required, and in particular the scheduling mode of n (i) second communication devices, that is, the subset partitioning mode of n (i) second communication devices, may be determined according to at least one of scenario a1, scenario a2, scenario A3, scenario B1, scenario B2, and scenario B3 in the above embodiments.

Optionally, in part 1006, the first communications device schedules at least one of the N second communications devices to transmit a signal in one of the at least one channel measurement period, or schedules at least one of the other M-N second communications devices among the M second communications devices to transmit a signal in one of the at least one channel measurement period.

Optionally, in part 1005, the first communications device may further send the value information of M to at least one of the N second communications devices, so that the N second communications devices determine the scheduling manners of the remaining M-N second communications devices in the T measurement periods. Specific embodiments and uses of the value information of M may refer to the description in section 705.

The following describes a specific scheduling manner provided in this embodiment with reference to specific drawings. The definitions of R, T, N and M above are used.

Scene C1: r is not satisfied and R is 2^rAnd not satisfying R2^r+1, R may be divided into R (1) and R (2), and R (1) satisfies R (1) ═ 2^rOr R (1) ═ 2^r+1, R (2) satisfying R (2) ═ 2^rOr R (2) ═ 2^r+1. Furthermore, the number of channel measurement periods required by N (1) second communication devices using the first set of R (1) resources is equal to the number of channel measurement periods required by N (2) second communication devices using the second set of R (2) resources, which is T, and M is N (1) + N (2). The first communication device scheduling a subset of said N (1) second communication devices and a subset of N (2) second communication devices to transmit signals on each of said T channel measurement periods, and further the first communication device needs to configure at least two channel measurement periods for the M second communication devices that do not coincide with said T channel measurement periods, and scheduling all of the N (1) second communication devices to transmit signals during at least one of the at least two channel measurement periods, scheduling all of the N (2) second communication devices to transmit signals during at least one other of the at least two channel measurement periods, therefore, each of the M second communication devices can be guaranteed to receive signals sent by other second communication devices in the M second communication devices.

Fig. 11a illustrates that R is 6, M is 12, R (1) is 3, R (2) is 3, N is 6 (N (1) is 6 in conjunction with the description of the above paragraphs), M-N is 6 (N (2) is 6 in conjunction with the description of the above paragraphs), and T is T (1) and T (2) is 4, which gives examples of the second communication device that needs to be scheduled in different measurement periods. In this example, UE 0-UE 5 belong to the N second communication devices to which UE 6-UE 11 belong to the remaining M-N second communication devices, and T0-T3 are the T channel measurement periods. The scheduling modes of the UEs 0 to 5 from T0 to T3 are the scheduling modes of the scenario B2, and the scheduling modes of the UEs 6 to UE11 from T0 to T3 are also the scheduling modes of the scenario B2. The BS also configures two channel measurement periods T4 and T5 for UEs 0-11, and schedules UEs 0-5 for signal transmission at T4 and UEs 6-11 for signal transmission at T5.

Scene C2: r is not satisfied and R is 2^rAnd not satisfying R2^r+1, R may be divided into R (1) and R (2), and R (1) satisfies R (1) ═ 2^rOr R (1) ═ 2^r+1, R (2) satisfying R (2) ═ 2^rOr R (2) ═ 2^r+1. The number of channel measurement periods T (1) required for the N (1) second communication devices using the first set of R (1) resources is not equal to the number of channel measurement periods T (1) required for the N (2) second communication devices using the second set of R (2) resources, T ═ MAX (T (1), T (2)), MAX () denotes taking the maximum value, M ═ N (1) + N (2). For convenience of explanation, T (1) > T (2) is assumed without loss of generality, and T is T (1). The first communication device schedules a subset of the N (1) second communication devices and a subset of the N (2) second communication devices to transmit signals on each of the T (2) channel measurement periods, and schedules the subset of the N (1) second communication devices to transmit signals on T (1) -T (2) channel measurement periods. In this way, each of the N (2) second communication devices may receive the second communication device transmission signal of at least a subset of the N (1) second communication devices over the T (1) -T (2) channel measurement periods. At this time, the first communication device needs to configure at least one channel measurement period that does not coincide with the T channel measurement periods for the M second communication devices, and schedule all the second communication devices of the N (1) second communication devices to transmit signals in the at least one channel measurement period.

Fig. 11b illustrates that R is 7, M is 14, R (1) is 4, R (2) is 3, N is 8 (N (1) is 8 in conjunction with the description of the above paragraphs), M-N is 6 (N (2) is 6 in conjunction with the description of the above paragraphs), T is T (1) is 6, and T (2) is 4, which gives examples of the second communication device that needs to be scheduled in different measurement periods. In this example, UE 0-UE 5 belong to the M-N second communication devices, UE 6-UE 13 belong to the remaining N second communication devices, T0-T5 are the T (1) channel measurement periods, and T0-T3 are the T (2) channel measurement periods. The scheduling modes of the UEs 0 to 5 from T0 to T3 are the scheduling modes of the scenario B2, and the scheduling modes of the UEs 6 to UE13 from T0 to T5 are the scheduling modes of the scenario a 1. The BS also configures T6 for UEs 0-13 for one channel measurement period, and schedules UEs 0-5 for signaling at T6.

Scene C3: r is not satisfied and R is 2^rAnd not satisfying R2^r+1, and when R needs to be grouped into more than two resource groups, for example, into a first group of R (1) resources, a second group of R (2) resources, and a third group of R (3) resources, a channel measurement period may be configured and a subset of the second communication device may be divided in a manner of using a scenario C1 or C2 for two of the resource groups, and then the combination of the two resource groups and the third resource group are configured with a channel measurement period and a subset of the second communication device in a manner of using a scenario C1 or C2 as a whole.

In this embodiment, there may also be a case that at least one of the n (i) second communication devices does not need to receive a signal sent by at least one of the n (j) second communication devices, and at this time, at least one of the n (i) second communication devices may perform transmission of other services according to a requirement or scheduling.

The embodiment of the application also provides a design method of the signal transmission interval. The method comprises the steps that the first communication device schedules one or more second communication devices to send signals on a first time unit, the first communication device schedules the one or more second communication devices to send signals on a second time unit, at least one third time unit is contained between the first time unit and the second time unit, and the first communication device does not schedule any second communication device to receive or send signals on the third time unit. The signal may include a signal used for D2D communication, for example, a signal used for D2D link measurement, and may also include a signal sent by the second communication device to the first communication device, for example, an SRS signal, a signal sent on a physical uplink shared channel, and the like. The first time unit, the second time unit, and the third time unit may be time units having different lengths in a time domain. Optionally, the first time unit is located at the beginning of a subframe or a slot, and/or the second time unit is located at the end of a subframe or a slot. This design method may be used alone or in combination with any of the embodiments described above with reference to fig. 1 to 11. Fig. 12a and 12b show two possible methods for designing the signal transmission interval.

An embodiment of the present application further provides a communication apparatus, which may be the first communication device or the second communication device described in the foregoing embodiments. The communication device may be a network device, such as a base station, or a user equipment. The communication device may also be a chip system, where the chip system includes at least one chip, and the processor is integrated in the chip and is used to support the communication device to perform the method or functions in the foregoing embodiments, and the chip system may further include a memory, where the memory may be integrated in the at least one chip or connected to the at least one chip as a discrete device, and the memory may store a program or instructions for the processor to execute. The communication device comprises a processor for controlling the communication device to perform the methods or steps involved in the above embodiments, and a memory coupled to the processor for storing a program or instructions for execution by the processor. The communication device may further comprise a transceiver for enabling the communication device to send and receive signals or messages as referred to in the above embodiments. When the communication device is a network device, the communication device may further include a communication interface for supporting the communication device to communicate with other network devices.

Fig. 13 is a simplified block diagram of a communication device according to an embodiment of the present application. The communication device includes a transceiver 1301, a processor 1302, a memory 1303, and a communication interface 1304.

It will be appreciated that fig. 13 only shows a simplified design of the communication device. In practical applications, the communication device may comprise any number of transmitters, receivers, processors, memories, etc., and all communication devices that may implement the present application are within the scope of the present application.

The processor of the communication device may be a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in a ram (random access memory) memory, a flash memory, a ROM (read-only memory) memory, an erasable programmable read-only memory (EPROM) memory, an electrically erasable programmable read-only memory (EEPROM) memory, registers, a hard disk, a removable hard disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in a communications device. Of course, the processor and the storage medium may reside as discrete components in a communication apparatus.

Those skilled in the art will recognize that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.

Claims

1. A method of communication, comprising:

a first communication device schedules communication devices in a different subset of N communication devices to transmit signals at each of T channel measurement periods, wherein the T channel measurement periods are configured for the N communication devices by the first communication device, N is an integer greater than or equal to 3, T is an integer greater than or equal to 3, the N communication devices include a first group of N1 communication devices and a second group of N2 communication devices, and N1+ N2, and the subset satisfies:

each of said subsets containing less than or equal to N1/2 communication devices of said first set of communication devices;

the first set of communication devices contained in each of the subsets are not identical;

any one of the first set of communication devices belongs to at least two different of the subsets;

any one of the second group of communication devices belongs to at least two different subsets, the at least two subsets to which any one of the second group of communication devices belongs are different from the subsets to which other communication devices of the second group of communication devices belong, and all communication devices of the first group of communication devices are included in the two subsets to which any one of the second group of communication devices belongs.

2. The method of claim 1, wherein the first communication device transmits start position information of the T channel measurement periods, at least one of length information of each channel measurement period and cycle information of the T channel measurement periods to at least one of the N communication devices.

3. The method of claim 1 or 2, wherein the method further comprises:

the first communication device sends at least one of the following information to at least one of the N communication devices: resource number information available for transmitting signals in each of the T channel measurement periods, resource information available for transmitting signals in each of the T channel measurement periods, the value information of N, and identification information of the at least one communication device.

4. The method of claim 3, wherein the resource information comprises frequency domain resource information and/or sequence information for generating a signal.

5. The method of claim 1, wherein the N communication devices are part of M communication devices, M being an integer greater than N, the method further comprising:

the first communication device schedules, at each of K channel measurement periods, communication devices in a different subset of M-N communication devices of the M communication devices other than the N communication devices to transmit signals, wherein the K channel measurement periods are configured for the other M-N communication devices by the first communication device and do not coincide with the T channel measurement periods, K is an integer greater than or equal to 1, and at least one of the K channel measurement periods is used for reception of a signal transmitted by at least one of the other M-N communication devices by at least one of the N communication devices.

6. The method of claim 1, wherein the N communication devices are part of M communication devices, M being an integer greater than N, the method further comprising:

the first communication device schedules at least one of the N communication devices to transmit a signal during one of at least one channel measurement period, or schedules at least one of the M-N communication devices other than the N communication devices to transmit a signal during one of at least one channel measurement period, wherein the at least one channel measurement period is not coincident with the T channel measurement periods.

7. The method of claim 5 or 6, further comprising:

the first communication device sends the value information of the M to at least one communication device of the N communication devices.

8. The method of claim 1, wherein N satisfies 2^r+1＜N≤2^r+1+ r +1, said N₁＝2^r+1And r is an integer of 0 or more.

9. The method of claim 1, wherein the first communications device schedules communications devices in one of the subsets to transmit signals using different frequency domain resources and/or using different sequences for generating signals.

10. A method of communication, comprising:

receiving, by a second communication device, a notification from a first communication device, the notification indicating at least one channel measurement period of T channel measurement periods scheduled by the first communication device, the T channel measurement periods being configured for N communication devices by the first communication device, the N communication devices being divided into a first group of communication devices and a second group of communication devices, the second communication device being one of the second group of communication devices, the T being an integer greater than or equal to 3, the N being an integer greater than or equal to 3;

the second communication device transmitting a signal over the at least one channel measurement period;

wherein each of the T channel measurement periods is scheduled for a communication device in a different subset of the N communication devices to transmit a signal;

each communication device of the second set of communication devices belongs to at least two subsets, and each communication device of the second set of communication devices belongs to at least two subsets that are different from the subsets to which other communication devices of the second set of communication devices belong, and each communication device of the second set of communication devices belongs to at least two subsets that include all communication devices of the first set of communication devices.

11. The method of claim 10, wherein the method further comprises:

the second communication equipment receives the configuration information of the T channel measurement periods sent by the first communication equipment; the configuration information of the T channel measurement periods includes: at least one of start position information of the T channel measurement periods, length information of each of the T channel measurement periods, and cycle information of the T channel measurement periods.

12. The method of claim 10 or 11, wherein the method further comprises:

the second communication device receives resource number information which is sent by the first communication device and can be used for sending signals in each of the T channel measurement periods, and at least one of the resource information which can be used for sending signals in each of the T channel measurement periods, the numerical value information of N and the identification information of the second communication device;

the second communication device sends a signal on at least one measurement period in the T channel measurement periods according to the configuration information of the T channel measurement periods, including:

the second communication device transmits a signal in at least one of the T channel measurement periods according to the resource number information available for transmitting the signal in each of the T channel measurement periods, at least one of the resource information available for transmitting the signal in each of the T channel measurement periods, the numerical information of N and the identification information of the second communication device, and the configuration information of the T channel measurement periods.

13. The method of claim 12, wherein the resource information comprises frequency domain resource information and/or sequence information for generating a signal.

14. A communications apparatus comprising a processor and a memory coupled to the processor, the processor configured to:

scheduling, at each of T channel measurement periods, communication devices in a different subset of N communication devices to transmit signals, wherein the T channel measurement periods are configured for the N communication devices by the communication apparatus, N is an integer greater than or equal to 3, T is an integer greater than or equal to 3, the N communication devices include a first group of N1 communication devices and a second group of N2 communication devices, and N1+ N2, and the subset satisfies:

15. The communications apparatus of claim 14, further comprising a transceiver for transmitting start position information of the T channel measurement periods, at least one of length information of each channel measurement period and cycle information of the T channel measurement periods to at least one of the N communication devices.

16. The communications apparatus of claim 14 or 15, further comprising a transceiver to transmit at least one of the following information to at least one of the N communication devices: resource number information available for transmitting signals in each of the T channel measurement periods, resource information available for transmitting signals in each of the T channel measurement periods, the value information of N, and identification information of the at least one communication device.

17. The communication apparatus according to claim 16, wherein the resource information comprises frequency domain resource information and/or sequence information for generating a signal.

18. The communications apparatus of claim 14, wherein the N communications devices are part of M communications devices, M being an integer greater than N, the processor further configured to:

scheduling, in each of K channel measurement periods, communication devices in different subsets of M-N communication devices, except for the N communication devices, of the M communication devices to transmit signals, where the K channel measurement periods are configured for the M-N communication devices by the communication apparatus, and the K channel measurement periods do not coincide with the T channel measurement periods, K is an integer greater than or equal to 1, and at least one of the K channel measurement periods is used for reception of a signal transmitted by at least one of the M-N communication devices by at least one of the N communication devices.

19. The communications apparatus of claim 14, wherein the N communications devices are part of M communications devices, M being an integer greater than N, the processor further configured to:

scheduling at least one of the N communication devices to transmit signals in one of at least one channel measurement period, or scheduling at least one of the M-N communication devices other than the N communication devices to transmit signals in one of at least one channel measurement period, wherein the at least one channel measurement period is not coincident with the T channel measurement periods.

20. The communications apparatus as claimed in claim 18 or 19, further comprising a transceiver for transmitting the value information of M to at least one of the N communications devices.

21. The communications apparatus of claim 14, wherein N satisfies 2^r+1＜N≤2^r+1+ r +1, said N₁＝2^r+1And r is an integer of 0 or more.

22. The communications apparatus of claim 14, the processor configured to schedule communications devices in one of the subsets to transmit signals using different frequency domain resources and/or using different sequences for generating signals.

23. A communication device comprising a processor and a transceiver;

the transceiver is configured to receive a notification from a first communication device, the notification indicating at least one channel measurement period of T channel measurement periods scheduled by the first communication device, the T channel measurement periods being configured for N communication devices by the first communication device, the N communication devices being divided into a first group of communication devices and a second group of communication devices, the communication apparatus being one of the second group of communication devices, the T being an integer greater than or equal to 3, the N being an integer greater than or equal to 3;

the processor configured to control the transceiver to transmit a signal over the at least one channel measurement period;

24. The communications apparatus of claim 23, wherein the transceiver is further configured to receive configuration information for the T channel measurement periods transmitted by the first communications device; the T channel measurement period configuration information includes: at least one of start position information of the T channel measurement periods, length information of each of the T channel measurement periods, and cycle information of the T channel measurement periods.

25. The communication apparatus according to claim 23 or 24,

the transceiver is further configured to receive resource number information, which is available for signal transmission, of each of the T channel measurement periods sent by the first communication device, where at least one of the resource information, the value information of N, and the identification information of the communication apparatus is available for signal transmission, of each of the T channel measurement periods;

the processor is configured to control the transceiver to transmit a signal in at least one of the T channel measurement periods according to the resource number information available for transmitting a signal in each of the T channel measurement periods, at least one of the resource information available for transmitting a signal in each of the T channel measurement periods, the value information of N and the identification information of the communication apparatus, and the configuration information of the T channel measurement periods.

26. The communications apparatus of claim 25, wherein the resource information comprises frequency domain resource information and/or sequence information for generating a signal.

27. A communication system, characterized in that the communication system comprises a communication device according to any of claims 14 to 22 and a communication device according to any of claims 23 to 26.

28. A communications apparatus, comprising a memory, a processor, and instructions stored on the memory and executable on the processor, the instructions when executed by the processor causing the communications apparatus to implement the method of any of claims 1-9.

29. A communications apparatus, comprising a memory, a processor, and instructions stored on the memory and executable on the processor, which when executed by the processor, cause the communications apparatus to implement the method of any of claims 10-13.

30. A computer-readable storage medium having stored thereon instructions which, when run on a computer, cause the computer to carry out the communication method according to any one of claims 1-13.