CN109997393B

CN109997393B - Device communication method and device

Info

Publication number: CN109997393B
Application number: CN201780069535.6A
Authority: CN
Inventors: 曾勇波; 才宇; 王键
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-08-11
Filing date: 2017-08-11
Publication date: 2021-08-03
Anticipated expiration: 2037-08-11
Also published as: CN109997393A; WO2019028897A1; CN113727311A

Abstract

The application provides a device communication method and a device, wherein a relay device determines a first resource from a candidate resource set, transmits first control information at the first resource, and transmits second control information at a second resource, and the relay device indicates a scheduled remote device and location information of the second resource in the first control information, so that the remote device can receive the second control information at the corresponding second resource, thereby reducing power consumption of the remote device.

Description

Device communication method and device

Technical Field

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

Background

Device to Device (D2D) technology is a technology for direct communication between devices, and data and corresponding control information may be transmitted directly between two devices without going through a base station. The relay scenario is one of the application scenarios, namely: relaying data and control information between a base station and a Remote device (Remote UE) via a Relay UE.

In a relay scenario, a relay device may schedule resources of a remote device. In the prior art, resource pools of a Physical bypass control channel (PSCCH) and a Physical bypass shared channel (PSCCH) may be divided in a time division multiplexing manner and configured periodically, where one cycle includes one PSCCH and one PSCCH. The PSCCH and PSSCH resource pools can also be divided in a frequency division multiplexing mode, namely, in an available D2D available frequency band, a part of frequency resources are used as the PSCCH resource pool, and the rest of frequency resources are used as the PSSCH resource pool; in this manner, data for the device may be transmitted using the PSCCH resources. PSCCH and PSCCH are used to transmit control information and data, respectively. According to the prior art, the relay device can randomly select resources in the PSCCH and the PSCCH, transmit bypass Control Information (SCI) through the selected PSCCH resources, transmit Data (Data) through the selected PSCCH, and the remote device attempts to demodulate the bypass Control Information in the PSCCH in a blind detection manner to determine whether the relay device is scheduled and acquire scheduling Information thereof.

However, in the prior art, the remote device needs to perform blind detection on SCIs in the PSCCH resource pool, which results in large blind detection power consumption.

Disclosure of Invention

The application provides a device communication method and device to reduce power consumption of a remote device.

A first aspect of the present application provides an apparatus communication method, including: the relay equipment determines a first resource from the candidate resource set, and sends first control information on the first resource, wherein the first control information is used for indicating information of the remote equipment scheduled by the relay equipment and position information of a second resource; and the relay equipment transmits second control information of the remote equipment scheduled by the relay equipment in the second resource according to the position information of the second resource. The remote device can determine whether the first control information received by the first resource is scheduled or not, and if the first control information is scheduled, the remote device receives the corresponding second control information at the corresponding second resource to obtain the scheduling information, which is equivalent to blind detection of the first control information by the remote device.

In one possible design, before the relay device determines the first resource from the candidate resource set, the method further includes: the relay equipment obtains configuration information of a resource pool, wherein the resource pool comprises a candidate resource set.

In one possible design, the obtaining, by the relay device, the configuration information of the resource pool includes: and the relay equipment receives the configuration information of the resource pool sent by the base station.

In one possible design, the set of candidate resources is any one of:

one or more resources corresponding to the position of at least one RB in the middle of the resource pool; one or more resources corresponding to the positions of the frequency resources where the synchronization signals are located and the first preset time distance from the synchronization signals; and shifting one or more resources corresponding to the position where the second preset time distance appears in a preset period from the No. 0 direct frame or the No. 0 system frame.

In one possible design, before the relay device determines the first resource from the candidate resource set, the method further includes: the relay device sends first indication information to the remote device, wherein the first indication information is used for indicating the position information of the candidate resource set.

In one possible design, the location information for the set of candidate resources includes location information for the initial resource and a periodicity of the candidate resources.

In one possible design, the relay device sends the first indication information to the remote device, including: the relay equipment sends first indication information to the remote equipment through a physical bypass broadcast channel PSBCH; or the relay equipment sends the first indication information to the remote equipment through the discovery message; alternatively, the relay device sends the first indication message to the remote device through a radio resource control, RRC, message.

In one possible design, before the relay device determines the first resource from the candidate resource set, the method further includes:

the relay device determines a candidate resource set from a pre-configured resource pool.

In one possible design, before the sending of the second control information by the relay device at the second resource, the method further includes: the relay device scrambles the second control information through the identification information of the remote device.

In one possible design, the second control information further includes second indication information, where the second indication information is used to indicate that the second control information is control information for scheduling transmission resources of the relay device; alternatively, the second control information is control information that schedules transmission resources of the remote device.

In one possible design, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the bypass control information SCI corresponding to the first control information; or, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the MAC CE of the data corresponding to the first control information; or, the information of the remote device scheduled by the relay device is carried in the bypass control information SCI corresponding to the first control information, and the location information of the second resource is carried in the MAC CE of the data corresponding to the first control information.

In one possible design, the demodulation reference signals DMRS, preamble sequences, or cyclic redundancy check CRC used for the bypass control information SCI corresponding to the first control information and the second control information are different.

In a second aspect, the present application provides a device communication method, including:

the remote equipment receives first control information at a first resource, wherein the first control information is used for indicating the information of the remote equipment scheduled by the relay equipment; determining a second resource according to the information of the remote device scheduled by the relay device;

the remote device receives second control information at the second resource. The remote device receives the second control information at the second resource, the second resource can be pre-configured or carried in the first control information, and the remote device receives the second control information at the second resource after determining that the remote device is scheduled, so that the blind detection range of the remote device is reduced, and the power consumption of the remote device is reduced.

In one possible design, the first control information is further used to indicate location information of the second resource;

the remote device determines a second resource according to the information of the remote device scheduled by the relay device, including:

the remote device determines the second resource according to the location information of the second resource.

In one possible design, the determining, by the remote device, the second resource based on the information of the remote device scheduled by the relay device includes: and if the information of the remote equipment scheduled by the relay equipment comprises the identification of the remote equipment, the remote equipment determines the second resource according to a preset rule.

In one possible design, the determining, by the remote device, the second resource according to a preset rule includes: and the remote equipment determines the second resource according to the pre-configured position information of the second resource.

In one possible design, before the remote device determines the second resource according to the pre-configured location information of the second resource, the method further includes: and the remote equipment receives the position information of the pre-configured second resource sent by the relay equipment.

In one possible design, the remote device receives first control information at a first resource, including: the remote device detects first control information in a candidate resource corresponding to a candidate resource set, wherein the candidate resource set comprises the first resource.

In one possible design, before the remote device detects the first control information in the candidate resource corresponding to the candidate resource set, the remote device further includes: the remote equipment receives first indication information sent by the relay equipment, wherein the first indication information is used for indicating the position information of the candidate resource set.

In one possible design, the remote device receives first indication information sent by the relay device, and includes:

the remote equipment receives first indication information sent by the relay equipment through a physical bypass broadcast channel PSBCH; or, the remote device receives the first indication information sent by the relay device through the discovery message; or, the remote device receives the first indication information sent by the relay device through a Radio Resource Control (RRC) message.

In one possible design, the remote device receives second control information at a second resource, including: and the remote equipment descrambles the second control information through the identification information of the remote equipment.

In one possible design, the second control information further includes second indication information;

the method further comprises the following steps: the remote equipment determines that the second control information is the control information for scheduling the transmission resources of the relay equipment according to the second indication information; alternatively, the second control information is control information that schedules transmission resources of the remote device.

In a third aspect, the present application provides an apparatus communication device, where the apparatus communication device is deployed in a relay device, and the apparatus communication device includes: a processing module configured to determine a first resource from a set of candidate resources, the first resource being used for transmitting first control information; a sending module, configured to send first control information at a first resource, where the first control information is used to indicate information of a remote device scheduled by a relay device and location information of a second resource; and the sending module is further used for sending the second control information of the remote equipment scheduled by the relay equipment in the second resource according to the position information of the second resource.

In one possible design, the processing module is further configured to obtain configuration information of a resource pool, where the resource pool includes the candidate resource set.

In one possible design, the processing module is specifically configured to receive configuration information of a resource pool sent by the base station.

In one possible design, the set of candidate resources is any one of:

one or more resources corresponding to the position of at least one RB in the middle of the resource pool;

one or more resources corresponding to the positions of the frequency resources where the synchronization signals are located and the first preset time distance from the synchronization signals;

and shifting one or more resources corresponding to the position where the second preset time distance appears in a preset period from the No. 0 direct frame or the No. 0 system frame.

In one possible design, the sending module is further configured to send, to the remote device, first indication information indicating location information of the candidate resource set.

In one possible design, the sending module is specifically configured to send the first indication information to the remote device through a physical bypass broadcast channel PSBCH; or, sending the first indication information to the remote device through the discovery message; alternatively, the first indication message is sent to the remote device via a radio resource control, RRC, message.

In one possible design, the processing module is further configured to determine a candidate resource set from a pre-configured resource pool.

In one possible design, the processing module is further configured to scramble the second control information with identification information of the remote device.

In one possible design, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the bypass control information SCI corresponding to the first control information;

or, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the MAC CE of the data corresponding to the first control information;

or, the information of the remote device scheduled by the relay device is carried in the bypass control information SCI corresponding to the first control information, and the location information of the second resource is carried in the MAC CE of the data corresponding to the first control information.

In a fourth aspect, the present application provides an apparatus communication device, where the apparatus communication device is deployed in a remote apparatus, including: a receiving module, configured to receive first control information at a first resource, where the first control information is used to indicate information of a remote device scheduled by a relay device; the processing module is used for determining a second resource according to the information of the remote equipment scheduled by the relay equipment; the receiving module is further configured to receive second control information at a second resource.

the processing module is specifically configured to determine the second resource according to the location information of the second resource.

In a possible design, the processing module is specifically configured to determine the second resource according to a preset rule if the information of the remote device scheduled by the relay device includes an identifier of the remote device.

In one possible design, the processing module is specifically configured to determine the second resource according to the pre-configured location information of the second resource.

In one possible design, the receiving module is further configured to receive location information of the preconfigured second resource sent by the relay device.

In one possible design, the receiving module is specifically configured to detect the first control information in a candidate resource corresponding to a candidate resource set, where the candidate resource set includes the first resource.

In one possible design, the receiving module is further configured to receive first indication information sent by the relay device, where the indication information is used to indicate location information of the candidate resource set.

In one possible design, the receiving module is specifically configured to receive, through a physical bypass broadcast channel PSBCH, first indication information sent by the relay device; or, receiving first indication information sent by the relay device through the discovery message; or, receiving the first indication information sent by the relay device through a Radio Resource Control (RRC) message.

In one possible design, the processing module is further configured to descramble the second control information through identification information of the remote device.

the processing module is further configured to determine, according to the second indication information, that the second control information is control information for scheduling transmission resources of the relay device; alternatively, the second control information is control information that schedules transmission resources of the remote device.

In a fifth aspect, the present application provides an apparatus communication device, where the apparatus communication device is deployed in a relay apparatus, and the apparatus communication device includes: a processor configured to determine a first resource from a set of candidate resources, the first resource being used for transmission of first control information; a transmitter for transmitting first control information at a first resource, the first control information indicating information of a remote device scheduled by a relay device and location information of a second resource; and the transmitter is also used for transmitting the second control information of the remote equipment scheduled by the relay equipment in the second resource according to the position information of the second resource.

In one possible design, the processor is further configured to obtain configuration information of a resource pool, where the resource pool includes the candidate resource set.

In one possible design, the processor is specifically configured to receive configuration information of a resource pool transmitted by the base station.

In one possible design, the set of candidate resources is any one of:

In one possible design, the transmitter is further configured to transmit first indication information to the remote device, the first indication information indicating location information of the candidate resource set.

In one possible design, the transmitter is specifically configured to transmit the first indication information to the remote device over a physical bypass broadcast channel PSBCH; or, sending the first indication information to the remote device through the discovery message; alternatively, the first indication message is sent to the remote device via a radio resource control, RRC, message.

In one possible design, the processor is further configured to determine a candidate resource set from a pre-configured resource pool.

In one possible design, the processor is further configured to scramble the second control information with identification information of the remote device.

In a sixth aspect, the present application provides an apparatus communication device, where the apparatus communication device is deployed in a remote apparatus, and the apparatus communication device includes: a receiver for receiving first control information at a first resource, the first control information indicating information of a remote device scheduled by a relay device; a processor for determining a second resource according to information of the remote device scheduled by the relay device; the receiver is further configured to receive second control information at a second resource.

the processor is specifically configured to determine the second resource according to the location information of the second resource.

In a possible design, the processor is specifically configured to determine the second resource according to a preset rule if the information of the remote device scheduled by the relay device includes an identifier of the remote device.

In one possible design, the processor is specifically configured to determine the second resource according to location information of the second resource configured in advance.

In one possible design, the receiver is further configured to receive location information of the preconfigured second resource sent by the relay device.

In one possible design, the receiver is specifically configured to detect the first control information in a candidate resource corresponding to a candidate resource set, where the candidate resource set includes the first resource.

In one possible design, the receiver is further configured to receive first indication information sent by the relay device, where the indication information is used to indicate location information of the candidate resource set.

In one possible design, the receiver is specifically configured to receive the first indication information sent by the relay device through a physical bypass broadcast channel PSBCH; or, receiving first indication information sent by the relay device through the discovery message; or, receiving the first indication information sent by the relay device through a Radio Resource Control (RRC) message.

In one possible design, the processor is further configured to descramble the second control information via identification information of the remote device.

the processor is further configured to determine, according to the second indication information, that the second control information is control information for scheduling transmission resources of the relay device; alternatively, the second control information is control information that schedules transmission resources of the remote device.

A seventh aspect of the present application provides a computer-readable medium comprising computer-executable instructions for causing a relay device to perform the method provided by the first aspect of the present application.

An eighth aspect of the present application provides a computer-readable medium comprising computer-executable instructions for causing a remote device to perform the method provided by the second aspect of the present application.

A ninth aspect of the present application provides a system on chip, the system being applicable to a relay apparatus, the system on chip comprising: the relay device comprises at least one communication interface, at least one processor and at least one memory, wherein the communication interface, the memory and the processor are interconnected through a bus, and the processor calls instructions stored in the memory to execute the operation of the relay device in the method provided by the first aspect of the application.

A tenth aspect of the present application provides a system on chip, the system being applicable to a remote apparatus, the system on chip comprising: the system comprises at least one communication interface, at least one processor and at least one memory, wherein the communication interface, the memory and the processor are interconnected through a bus, and the processor calls instructions stored in the memory to execute the operation of a remote device in the method provided by the second aspect of the application.

Drawings

Fig. 1 is a schematic view of an application scenario of the present application;

fig. 2 is a flowchart illustrating a first embodiment of a communication method of the apparatus of the present application;

FIG. 3 is a schematic diagram illustrating a positional relationship between first control information and second control information according to the present application;

FIG. 4 is a diagram illustrating a format of a first control message according to the present application;

FIG. 5 is a diagram illustrating another format of first control information according to the present application;

FIG. 6 is a diagram illustrating a relay device scheduling a remote device according to the present application via first control information and second control information

Fig. 7 is a flowchart illustrating a second embodiment of a communication method of the apparatus of the present application;

fig. 8 is a flowchart illustrating a third embodiment of a communication method of the apparatus of the present application;

fig. 9 is a flowchart illustrating a fourth embodiment of a communication method of the apparatus of the present application;

fig. 10 is a schematic structural diagram of a device communication apparatus provided in the present application;

fig. 11 is a schematic structural diagram of another communication device of the present application;

fig. 12 is a schematic structural diagram of a communication device of another apparatus provided in the present application;

fig. 13 is a schematic structural diagram of another device communication apparatus provided in the present application.

Detailed Description

Fig. 1 is a schematic view of an application scenario of the present application, and as shown in fig. 1, the application scenario of the present application includes: the relay equipment relays data and control information between the base station and the remote equipment. The base station may be an evolved NodeB (eNB), an Access Point (AP), or a relay station in a Long Term Evolution (LTE) system, or may be a base station (e.g., a gbb or a Transmission Point (TRP)) in a fifth Generation mobile communication (5 Generation, 5G) system. Both the relay device and the remote device may be a type of user equipment. A user equipment, which may be referred to as a terminal equipment, a mobile station, a terminal, or a mobile terminal, may communicate with one or more Network devices via a Radio Access Network (RAN). The user equipment may be a mobile phone (or so-called "cellular" phone) or a computer with a mobile terminal, etc., e.g. the user equipment may also be a portable, pocket, hand-held, computer-included or car-mounted mobile device. The user equipment can also be internet of things equipment, such as a watch terminal, wearable equipment, logistics tracking, or satellite equipment and other internet of things equipment. In different scenarios, the relay device and the remote device may be different; for example: in the car networking scenario, the relay device may be a Road Side Unit (RSU) or the like, and the remote device may be an On Board Unit (OBU), a Vehicle device (V-UE) or a Pedestrian handheld terminal (P-UE) or the like; in the scenario of the Internet of Things, the relay device may be a mobile phone, a watch with communication capability, an Internet of Things device (IoT device), or a computer with a mobile terminal, and the remote device may be a wearable device (e.g., a smart band or a smart watch), an IoT device, and the like, and fig. 1 illustrates the scenario of the Internet of Things, which is not limited in this application.

According to the method, the relay equipment schedules the remote equipment through two levels of control information, wherein first control information (namely first level control information) is used for indicating which remote equipment is scheduled, the remote equipment determines whether the remote equipment is scheduled by the relay equipment or not according to the first control information, if the remote equipment is scheduled by the relay equipment, corresponding second control information (namely second level control information) is obtained at a specified position, the second control information carries scheduling information of the remote equipment, and therefore the remote equipment obtains the scheduling information of the remote equipment. The remote equipment can determine the designated position through the position information of second control information corresponding to the scheduled remote equipment carried in the first control information; the remote device can also determine whether the remote device is scheduled by the relay device according to the first control information, if the remote device is scheduled by the relay device, the specified position is determined according to the preset rule, and the position information of the second control information corresponding to the remote device can be determined through the first control information, so that the blind detection range of the remote device is reduced, and the power consumption of the remote device is reduced.

The following embodiments of the present application may relate to the concepts:

resource Block (RB) refers to a bandwidth corresponding to M subcarriers on a frequency resource, for example, M is 12:

physical Resource Block (PRB): refers to a Time-Frequency resource (Time-Frequency resource) composed of K RBs on a Frequency resource and L slots (slots) on a Time resource, for example, K1, L1:

physical resource block pair (PRB pair): refers to a resource composed of two PRBs in the same RB location, that is, a time-frequency resource composed of K RBs on a frequency resource and 2L slots (slots) on a time resource, for example, K1, L1;

a unit with the smallest time-Frequency Resource is called a Resource Element (RE), and refers to a Resource of Q subcarriers in Frequency and P physical symbols in time (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols or Single carrier-Frequency Division Multiplexing (SC-FDM) symbols), such as Q ═ 1 and P ═ 1; the time-frequency resource consists of one or more REs.

In this application, a resource refers to a time-frequency resource, unless otherwise specified. In the current standard, one SCI (also referred to as SA) occupies 1 PRB pair; while the scheduling of data (data) in the bypass (sidelink) is in sub-frame units (2 slots) in time, the number of RBs in frequency is indicated by SCI.

The definition of the aforementioned concept is based on the LTE protocol. In a new communication system technology or various evolution system technologies, such as 5G, different concepts may be used for definition, or different parameter values may be used for definition; for example, M may not be 12, SCI may not occupy 1 PRB pair. The present application adopts the concept description in LTE from the viewpoint of easy understanding, but is not limited thereto.

Technical aspects of the present application are described below in several specific embodiments, which may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 2 is a schematic flowchart of a first embodiment of a device communication method according to the present application, as shown in fig. 2:

s201: the relay device determines a first resource from the set of candidate resources.

The candidate resource set refers to a set of resources available for transmitting the first control information in a resource pool, the candidate resource set is a part of resources of the resource pool, the resources in the resource pool are used for communication between the relay device and the remote device, and the resource pool includes the candidate resource set.

The first resource refers to a resource used for transmitting the first control information, which may be any resource in the candidate resource set.

Wherein, the candidate resource set may be determined according to the following preset rules:

for example: and determining one or more resources corresponding to the position of at least one RB in the middle of the resource pool to form a candidate resource set.

Or determining that one or more resources corresponding to the frequency resource position where the synchronization signal is located and the position which is a first preset time distance away from the synchronization signal form a candidate resource set, wherein the synchronization signal is the synchronization signal sent by the relay device to the remote device.

Or determining that one or more resources corresponding to positions appearing at a preset period offset by a second preset time distance from a Direct Frame Number (DFN) #0 or a System Frame Number (SFN) #0 constitute a candidate resource set. Where DFN is also referred to as D2D frame number.

Optionally, S201 may further include: s200:

s200: the relay equipment acquires the configuration information of the resource pool.

Optionally, the manner in which the relay device acquires the resource pool includes, but is not limited to, the following several implementation manners:

one possible implementation is as follows: and the base station or the network side equipment sends the configuration information of the resource pool to the relay equipment, and the relay equipment obtains the information such as the time frequency position of the resource pool and/or the size of the resource pool according to the configuration information of the resource pool. Specifically, the base station may transmit the configuration information of the resource pool to the relay device through control information transmitted on the cellular link.

Another possible implementation: the relay equipment acquires the configuration information of the resource pool in a pre-configured mode; for example, the configuration may be obtained by the network side device as specified by a protocol or as pre-configured according to the permission of the wireless regulatory agency in different regions.

S202: the relay device transmits the first control information at the first resource.

The relay device may determine the remote device scheduled by the relay device based on traffic and resource conditions.

The first control information is used for indicating information of a remote device scheduled by the relay device (which may also be indicated as information whether the remote device is scheduled by the relay device) and location information of a second resource corresponding to the scheduled remote device.

Assuming that the relay device schedules 3 remote devices, it indicates in the first control information that 3 remote devices are scheduled, the 3 remote devices being remote device 1, remote device 2 and remote device 4, respectively; a first resource for transmitting the first control information and a second resource for transmitting the second control information of the remote device 1, a second resource for transmitting the second control information of the remote device 2 and a second resource for transmitting the second control information of the remote device 2 are shown in fig. 3. Wherein the first control information may be transmitted periodically.

In a possible implementation manner, the information of the remote device scheduled by the relay device and the location information of the second resource corresponding to the scheduled remote device may be carried in the bypass control information SCI corresponding to the first control information. Two fields are defined in the SCI for each remote device scheduled by the relay device, as shown in fig. 4, one field for indicating information of the remote device scheduled by the relay device, such as: the information of the remote device can be local ID (local ID) or temporary ID of the remote device, one remote device is identified by N bits, and at most 2 can be identified^NA remote device. The IDs of the remote devices, C7, C6, and C5, respectively, are indicated by 3 bits in fig. 4, information that can be used to identify 8 remote devices. Another field is used to indicate location information of the second resource, which is C4, C3, C2, C1, and C0, respectively, taking 5 bits as an example in fig. 4.

In another possible implementation manner, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in a Media Access Control Element (MAC CE) of the data corresponding to the first Control information.

This manner is similar to the manner shown in fig. 4, except that two domains are defined for the remote device scheduled by each relay device in the SCI in fig. 4, and this manner defines two domains for the remote device scheduled by each relay device in the MAC CE of the data corresponding to the first control information, and the manner of defining the two domains is similar to fig. 4, and is not repeated here.

In another possible implementation manner, the information of the remote device scheduled by the relay device is carried in the bypass control information SCI corresponding to the first control information, and the location information of the second resource is carried in the MAC CE of the data corresponding to the first control information. As shown in fig. 5, the SCI corresponding to the first control information indicates that the information of the remote device scheduled by the relay device may be indicated by means of a bitmap (also referred to as a bitmap), and each remote device associated with the relay device corresponds to one bit in the bitmap. In fig. 5, whether a remote device associated with the relay device is scheduled is indicated by an 8-bit bitmap, and whether a corresponding remote device is scheduled is indicated by setting a value of a corresponding bit, for example: if 1 indicates scheduled, 0 indicates not scheduled, and if a certain remote device is scheduled, the bit value corresponding to the remote device is set to 1. If 0 indicates scheduled, 1 indicates not scheduled, and if a certain remote device is scheduled, the bit value corresponding to the remote device is set to 0. In fig. 5, assuming that a bit value of 1 indicates scheduled, remote device 1, remote device 2, and remote device 4 are scheduled, and the remaining remote devices are not scheduled. The MAC CE of the data corresponding to the first control information carries the location information of the second resource, as shown in fig. 5. The remote device first detects the SCI corresponding to the first control device, determines whether the remote device is scheduled, and if the remote device is scheduled, detects the MAC CE of the data corresponding to the first control information to obtain the location information of the second resource. In the manner shown in fig. 5, only the scheduled remote device needs to demodulate the MAC CE of the data corresponding to the first control information.

Fig. 6 is a schematic diagram of a relay device scheduling a remote device through first control information and second control information according to the present application. Wherein (a) in the figure illustrates a case where the first control information is transmitted in the SCI; fig. (b) illustrates a case where the first control information is transmitted on the MAC CE of the SCI and data. Here, the case when PSCCH and PSCCH resource pools are frequency division multiplexed is explained by way of example only. The method is also suitable for the PSCCH and PSSCH resource pool time division multiplexing situation.

S203: and the relay equipment transmits second control information of the remote equipment scheduled by the relay equipment in the second resource according to the determined position information of the second resource.

The second control information comprises scheduling information.

Optionally, before the relay device transmits the second control information of the scheduled remote device, the relay device may further scramble the corresponding second control information by the relevant information of the scheduled remote device. For example: the related information may be identification information, such as a global ID, or a cell radio network temporary identifier (C-RNTI), a layer 2ID, and the like; such as: the remote device 1 is scheduled by the relay device, and the second control information of the remote device 1 is scrambled by the identification information of the remote device 1, such as the global ID, so that the remote device 1 descrambles the second control information correctly, while other remote devices cannot descramble the second control information of the remote device 1 correctly.

Optionally, the second control information may further include second indication information, where the second indication information is used to indicate that the second control information is control information for scheduling transmission resources of the relay device; alternatively, the second control information is control information that schedules transmission resources of the remote device. That is, the second indication information indicates whether the second control information is bypass uplink (Sidelink UL) control information or bypass downlink (Sidelink DL) control information. The second indication information may be represented by 1 bit, for example: 0 denotes bypass downlink control information, and 1 denotes bypass uplink control information. Bypass downlink refers to a link from a relay device to a remote device; by bypass uplink is meant the remote device to relay device link.

Correspondingly, the remote device receives the first control information at the first resource, determines the second resource according to the position information of the second resource, and receives the second control information at the second resource.

For detailed descriptions of the first resource, the first control information, the second resource, and the second control information, reference is made to detailed descriptions of relevant parts in S200 to S203, which are not described herein again.

In this embodiment, the relay device determines the first resource from the candidate resource set, transmits the first control information on the first resource, and transmits the second control information on the second resource, because the relay device indicates the remote device scheduled by the relay device and the location information of the second resource in the first control information, the remote device can determine whether it is scheduled by the first control information received in the first resource, and if it is scheduled, the location information of its corresponding second resource, receives its corresponding second control information in its corresponding second resource, obtains its scheduling information, which is equivalent to the remote device blindly detecting the first control information, and can directly determine the location information of the second resource for transmitting the second control information after detecting the first control information, that is, without blindly detecting the resource between the first resource and the second resource, thereby, the blind detection range of the remote equipment is narrowed, and the power consumption of the remote equipment is reduced.

On the basis of the embodiment shown in fig. 2, further, the remote device may be enabled to learn, in advance, location information of a candidate resource set that the relay device may use to transmit the first control information; therefore, the remote equipment detects the first control information in the resources of the candidate resource set according to the position information of the candidate resource set, further, the blind detection range of the remote equipment is reduced, and the power consumption of the remote equipment is further reduced.

The way in which the remote device knows in advance the location information of the candidate resource set available for the relay device to transmit the first control information includes, but is not limited to, the following two ways:

one possible implementation manner is as follows: the remote device is made aware of the location information of the candidate resource set in a preconfigured manner.

In another possible implementation manner, the remote device is made to know the candidate resource set by sending, by the relay device, first indication information to the remote device, where the first indication information is used to indicate location information of the candidate resource set, and the location information of the candidate resource set may include location information of the initial resource and a period of the candidate resource.

The method for the relay device to send the first indication information to the remote device includes, but is not limited to, the following: one possible implementation: the relay equipment sends first indication information to the remote equipment through a broadcast message; for example: the relay device transmits the first indication information to the remote device through a Physical Broadcast Channel (PSBCH). Alternatively, the relay device transmits the first indication information to the remote device through a discovery message (discovery message). Another possible implementation: the relay device sends the first indication message to a remote device through a Radio Resource Control (RRC) message.

In the foregoing embodiments, if the first control information and the second control information can share resources, the first control information and the second control information can be distinguished by using Different (DMRS), preamble sequences, or Cyclic Redundancy Checks (CRCs) for SCIs corresponding to the first control information and the second control information.

Fig. 7 is a flowchart of a second embodiment of a device communication method of the present application, and a difference between fig. 7 and the embodiment shown in fig. 2 is that, in the embodiment shown in fig. 2, location information of a second resource is directly carried in first control information, and in the embodiment shown in fig. 7, the location information of the second resource is indicated in an implicit manner, as shown in fig. 7:

s701: the relay device transmits the first control information at the first resource.

Wherein the first control information is used for indicating information of a remote device scheduled by the relay device.

S702: the remote device determines whether the information of the remote device scheduled by the relay device indicated in the first control information contains the information, and if so, determines the second resource according to a preset rule.

Wherein, the preset rule can be configured in advance; the relay device may send the preset rule to the remote device when being associated with the remote device, or the relay device may send the preset rule to the remote device through broadcast information, or the preset rule may also be specified by a standard, and the like.

S703: the relay device transmits second control information of the scheduled remote device at the second resource.

Accordingly, the remote device receives its second control information at the second resource.

In this embodiment, the relay device sends the first control information in the first resource, the remote device determines whether the information of the remote device scheduled by the relay device, which is indicated in the first control information, includes the information, if the information includes the second resource, which is determined according to the preset rule, the relay device sends the second control information of the scheduled remote device in the second resource, and the remote device receives the second control information in the second resource.

Fig. 8 is a flowchart illustrating a third embodiment of a communication method of the device of the present application, where the method of the present embodiment is executed by a relay device, and the method of the present embodiment is as follows:

s801: and acquiring configuration information of the resource pool.

S802: control information and resources are configured.

S803: the common control information is transmitted.

The common control information carries information of a specific remote device and position information of control information of the specific remote device. A particular remote device refers to a remote device that is scheduled by a relay device.

S804: control information for a particular remote device is transmitted.

For detailed description of each step in this embodiment, refer to the detailed description of the corresponding step in fig. 2 or fig. 7, which is not described again in this embodiment. The implementation principle and the technical effect of the embodiment are similar, and are not described herein again.

Fig. 9 is a flowchart illustrating a fourth embodiment of a device communication method according to the present application, where the method of the present embodiment is executed by a remote device, and the method of the present embodiment is as follows:

s901: common control information is detected.

S902: and determining whether the scheduling is carried out by the relay equipment, if so, executing S903, and if not, ending.

S903: control information for a particular remote device is detected.

Fig. 10 is a schematic structural diagram of an apparatus communication device provided in the present application, where the apparatus communication device is deployed in a relay apparatus, and the apparatus includes: a processing module 1001 and a sending module 1002; the processing module 1001 is configured to determine a first resource from the candidate resource set, where the first resource is used for transmitting first control information; the sending module 1002 is configured to send, at a first resource, first control information, where the first control information is used to indicate information of a remote device scheduled by a relay device and location information of a second resource; the sending module 1002 is further configured to send, according to the location information of the second resource, second control information of the remote device scheduled by the relay device at the second resource.

Optionally, the processing module 1001 is further configured to obtain configuration information of a resource pool, where the resource pool includes the candidate resource set.

Optionally, the processing module 1001 is specifically configured to receive configuration information of a resource pool sent by a base station.

Optionally, the candidate resource set is any one of:

Optionally, the sending module 1002 is further configured to send first indication information to the remote device, where the first indication information is used to indicate location information of the candidate resource set.

Optionally, the location information of the candidate resource set includes location information of the initial resource and a period of the candidate resource.

Optionally, the sending module 1002 is specifically configured to send the first indication information to the remote device through a physical bypass broadcast channel PSBCH; or, sending the first indication information to the remote device through the discovery message; alternatively, the first indication message is sent to the remote device via a radio resource control, RRC, message.

Optionally, the processing module 1002 is further configured to determine a candidate resource set from a pre-configured resource pool.

Optionally, the processing module 1002 is further configured to scramble the second control information by the identification information of the remote device.

Optionally, the second control information further includes second indication information, where the second indication information is used to indicate that the second control information is control information for scheduling transmission resources of the relay device; alternatively, the second control information is control information that schedules transmission resources of the remote device.

Optionally, the information of the remote device scheduled by the relay device and the location information of the second resource are carried in bypass control information SCI corresponding to the first control information;

Optionally, the demodulation reference signals DMRS, preamble sequences, or cyclic redundancy check CRC adopted by the bypass control information SCI corresponding to the first control information and the second control information are different.

The apparatus in the embodiment shown in fig. 10 may be correspondingly used to perform the steps corresponding to the relay device in the embodiment shown in fig. 2, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 11 is a schematic structural diagram of another device communication apparatus provided in the present application, where the device communication apparatus is deployed in a remote device, as shown in fig. 11, the apparatus includes: a receiving module 1101 and a processing module 1102; wherein the receiving module 1101 is configured to receive first control information at a first resource, where the first control information is used to indicate information of a remote device scheduled by a relay device; the processing module 1102 is configured to determine a second resource according to information of the remote device scheduled by the relay device; the receiving module 1101 is further configured to receive second control information at a second resource.

Optionally, the first control information is further used for indicating location information of the second resource;

the processing module 1102 is specifically configured to determine the second resource according to the location information of the second resource.

Optionally, the processing module 1102 is specifically configured to determine the second resource according to a preset rule if the information of the remote device scheduled by the relay device includes an identifier of the remote device.

Optionally, the processing module 1102 is specifically configured to determine the second resource according to the pre-configured location information of the second resource.

Optionally, the receiving module 1101 is further configured to receive location information of the preconfigured second resource sent by the relay device.

Optionally, the receiving module 1101 is specifically configured to detect the first control information in a candidate resource corresponding to a candidate resource set, where the candidate resource set includes the first resource.

Optionally, the receiving module 1101 is further configured to receive first indication information sent by the relay device, where the indication information is used to indicate location information of the candidate resource set.

Optionally, the receiving module 1101 is specifically configured to receive, through a physical bypass broadcast channel PSBCH, first indication information sent by the relay device; or, receiving first indication information sent by the relay device through the discovery message; or, receiving the first indication information sent by the relay device through a Radio Resource Control (RRC) message.

Optionally, the processing module 1102 is further configured to descramble the second control information through the identification information of the remote device.

Optionally, the second control information further includes second indication information;

the processing module 1102 is further configured to determine, according to the second indication information, that the second control information is control information for scheduling transmission resources of the relay device; alternatively, the second control information is control information that schedules transmission resources of the remote device.

The apparatus in the embodiment shown in fig. 11 may be correspondingly used to perform the steps corresponding to the remote device in the embodiment of the method shown in fig. 2 or fig. 7, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 12 is a schematic structural diagram of another apparatus communication device provided in the present application, where the apparatus communication device is deployed in a relay apparatus, and the apparatus includes: a processor 1201 and a transmitter 1202; wherein the processor 1201 is configured to determine a first resource from the candidate resource set, the first resource being used for transmitting first control information; the transmitter 1202 is configured to transmit first control information on a first resource, where the first control information is used to indicate information of a remote device scheduled by the relay device and location information of a second resource; the transmitter 1202 is further configured to transmit second control information of the remote device scheduled by the relay device at the second resource according to the location information of the second resource.

Optionally, the processor 1201 is further configured to obtain configuration information of a resource pool, where the resource pool includes the candidate resource set.

Optionally, the processor 1201 is specifically configured to receive configuration information of a resource pool sent by a base station.

Optionally, the candidate resource set is any one of:

Optionally, the transmitter 1202 is further configured to transmit first indication information to the remote device, the first indication information indicating location information of the candidate resource set.

Optionally, the transmitter 1202 is specifically configured to transmit the first indication information to the remote device through a physical bypass broadcast channel PSBCH; or, sending the first indication information to the remote device through the discovery message; alternatively, the first indication message is sent to the remote device via a radio resource control, RRC, message.

Optionally, the processor 1201 is further configured to determine a candidate resource set from a pre-configured resource pool.

Optionally, the processor 1201 is further configured to scramble the second control information with the identification information of the remote device.

The apparatus in the embodiment shown in fig. 12 may be correspondingly used to perform the steps corresponding to the relay device in the embodiment shown in fig. 2, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 13 is a schematic structural diagram of another device communication apparatus provided in the present application, where the device communication apparatus is deployed in a remote device, as shown in fig. 13, the apparatus includes: a receiver 1301 and a processor 1302; wherein, the receiver 1301 is configured to receive first control information at the first resource, the first control information being used for indicating information of a remote device scheduled by the relay device; the processor 1302 is configured to determine a second resource according to information of a remote device scheduled by the relay device; the receiver 1301 is further configured to receive second control information on a second resource.

the processor 1302 is specifically configured to determine the second resource according to the location information of the second resource.

Optionally, the processor 1302 is specifically configured to determine the second resource according to a preset rule if the information of the remote device scheduled by the relay device includes an identifier of the remote device.

Optionally, the processor 1302 is specifically configured to determine the second resource according to the pre-configured location information of the second resource.

Optionally, the receiver 1301 is further configured to receive location information of the preconfigured second resource sent by the relay device.

Optionally, the receiver 1301 is specifically configured to detect the first control information in a candidate resource corresponding to a candidate resource set, where the candidate resource set includes the first resource.

Optionally, the receiver 1301 is further configured to receive first indication information sent by the relay apparatus, where the indication information is used to indicate location information of the candidate resource set.

Optionally, the receiver 1301 is specifically configured to receive, through a physical bypass broadcast channel PSBCH, first indication information sent by the relay device; or, receiving first indication information sent by the relay device through the discovery message; or, receiving the first indication information sent by the relay device through a Radio Resource Control (RRC) message.

Optionally, the processor 1302 is further configured to descramble the second control information by the identification information of the remote device.

the processor 1302 is further configured to determine, according to the second indication information, that the second control information is control information for scheduling transmission resources of the relay device; alternatively, the second control information is control information that schedules transmission resources of the remote device.

The apparatus in the embodiment shown in fig. 13 may be correspondingly used to perform the steps corresponding to the remote device in the embodiment of the method shown in fig. 2 or fig. 7, and the implementation principle and the technical effect are similar, which are not described herein again.

It is understood that the processor in the present application 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. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like.

The bus of the present application may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

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

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to perform some steps of the methods according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Claims

1. A device communication method, comprising:

the relay equipment determines a first resource from a candidate resource set, wherein the first resource is used for transmitting first control information;

the relay equipment sends the first control information at the first resource, wherein the first control information is used for indicating information of remote equipment scheduled by the relay equipment and position information of a second resource;

and the relay equipment transmits second control information of the remote equipment scheduled by the relay equipment in the second resource.

2. The method of claim 1, wherein before the relay device determines the first resource from the candidate set of resources, further comprising:

the relay device obtains configuration information of a resource pool, wherein the resource pool comprises the candidate resource set.

3. The method of claim 2, wherein the relay device obtaining configuration information of a resource pool comprises:

and the relay equipment receives the configuration information of the resource pool sent by the base station.

4. The method of claim 2 or 3, wherein the candidate resource set is any one of:

5. The method of any of claims 1-3, wherein prior to the relay device determining the first resource from the set of candidate resources, further comprising:

the relay device sends first indication information to the remote device, wherein the first indication information is used for indicating the position information of the candidate resource set.

6. The method of claim 5, wherein the relay device sends first indication information to the remote device, comprising:

the relay equipment sends the first indication information to the remote equipment through a physical bypass broadcast channel (PSBCH);

or,

the relay device sends the first indication information to the remote device through a discovery message;

or,

the relay device sends the first indication message to the remote device via a radio resource control, RRC, message.

7. The method according to any of claims 1-6, wherein the second control information further comprises second indication information, and the second indication information is used for indicating that the second control information is control information for scheduling transmission resources of the relay device; or, the second control information is control information for scheduling transmission resources of the remote device.

8. The method according to any of claims 1-7, wherein the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the bypass control information SCI corresponding to the first control information;

9. A device communication method, comprising:

the remote equipment receives first control information at a first resource, wherein the first control information is used for indicating the information of the remote equipment scheduled by the relay equipment;

the remote equipment determines a second resource according to the information of the remote equipment scheduled by the relay equipment;

the remote device receives second control information at the second resource.

10. The method of claim 9, wherein the first control information is further used for indicating location information of the second resource;

and the remote equipment determines the second resource according to the position information of the second resource.

11. The method of claim 9, wherein the determining, by the remote device, the second resource according to the information of the remote device scheduled by the relay device comprises:

and if the information of the remote equipment scheduled by the relay equipment comprises the identification of the remote equipment, the remote equipment determines the second resource according to a preset rule.

12. The method of claim 11, wherein the remote device determines the second resource according to a preset rule, comprising:

and the remote equipment determines the second resource according to the pre-configured position information of the second resource.

13. The method of claim 12, wherein the remote device determines the second resource before determining the second resource according to the location information of the second resource configured in advance, further comprising:

and the remote equipment receives the position information of the pre-configured second resource sent by the relay equipment.

14. The method of any of claims 9-13, wherein the remote device receives first control information at a first resource, comprising:

the remote device detects first control information in a candidate resource corresponding to a candidate resource set, wherein the candidate resource set comprises the first resource.

15. The method of claim 14, wherein the remote device, before detecting the first control information in the candidate resource corresponding to the candidate resource set, further comprises:

the remote equipment receives first indication information sent by the relay equipment, wherein the first indication information is used for indicating the position information of the candidate resource set.

16. The method of claim 15, wherein the receiving, by the remote device, the first indication information sent by the relay device comprises:

the remote equipment receives the first indication information sent by the relay equipment through a physical bypass broadcast channel (PSBCH);

or,

the remote equipment receives the first indication information sent by the relay equipment through a discovery message;

or,

and the remote equipment receives the indication information sent by the relay equipment through a Radio Resource Control (RRC) message.

17. The method according to any of claims 1-16, wherein the second control information further comprises second indication information;

the method further comprises the following steps:

the remote equipment determines the second control information as control information for scheduling transmission resources of the relay equipment according to the second indication information; or, the second control information is control information for scheduling transmission resources of the remote device.

18. An apparatus communication device disposed in a relay apparatus, comprising:

a processor configured to determine a first resource from a set of candidate resources, the first resource being used for transmission of first control information;

a transmitter for transmitting the first control information at the first resource, the first control information indicating information of a remote device scheduled by a relay device and location information of a second resource;

the transmitter is further configured to transmit second control information of the remote device scheduled by the relay device on the second resource.

19. The apparatus of claim 18, wherein the processor is further configured to obtain configuration information of a resource pool, and wherein the resource pool comprises the candidate resource set.

20. The apparatus of claim 19, wherein the set of candidate resources is any one of:

21. The apparatus of claim 18 or 19, wherein the transmitter is further configured to transmit first indication information to the remote device, the first indication information indicating location information of the candidate resource set.

22. The apparatus of claim 21, wherein the transmitter is specifically configured to transmit the first indication information to the remote device over a physical bypass broadcast channel (PSBCH); or, sending the first indication information to the remote device through a discovery message; or, the first indication message is sent to the remote device by a radio resource control, RRC, message.

23. The apparatus according to any of claims 18-22, wherein the second control information further includes second indication information, and the second indication information is used to indicate that the second control information is control information for scheduling transmission resources of the relay device; or, the second control information is control information for scheduling transmission resources of the remote device.

24. The apparatus according to any of claims 18-23, wherein the information of the remote device scheduled by the relay device and the location information of the second resource are carried in the bypass control information SCI corresponding to the first control information;

25. A device communication apparatus, the device communication apparatus being deployed at a remote device, comprising:

a receiver configured to receive first control information at a first resource, the first control information indicating information of a remote device scheduled by a relay device;

a processor, configured to determine a second resource according to the information of the remote device scheduled by the relay device;

the receiver is further configured to receive second control information at the second resource.

26. The apparatus of claim 25, wherein the first control information is further used for indicating location information of the second resource;

27. The apparatus of claim 25, wherein the processor is specifically configured to determine the second resource according to a preset rule if the information of the remote device scheduled by the relay device includes an identifier of the remote device.

28. The apparatus of claim 27, wherein the processor is further configured to determine the second resource according to location information of a preconfigured second resource.

29. The apparatus of claim 28, wherein the receiver is further configured to receive location information of the preconfigured second resource sent by the relay device.

30. The apparatus according to any of claims 25-29, wherein the receiver is specifically configured to detect the first control information in a candidate resource corresponding to a set of candidate resources, the set of candidate resources comprising the first resource.