CN116326136A

CN116326136A - Communication method, device and storage medium based on side link

Info

Publication number: CN116326136A
Application number: CN202380008041.2A
Authority: CN
Inventors: 李明菊
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-01-18
Filing date: 2023-01-18
Publication date: 2023-06-23

Abstract

The present disclosure relates to a method, apparatus and storage medium for side link based communication, the method being performed by a first device and comprising: determining a side link beam measurement result in response to the first device performing side link beam measurement based on a reference signal resource; the side chain beam measurement is indicated to a second device. According to the communication method based on the side link, the first equipment responds to the side link beam measurement based on the reference signal resource, the side link beam measurement result is determined, and the side link beam measurement result is indicated to the second equipment, so that the second equipment can select the beam to carry out beam transmission based on the side link beam measurement result, and the performance of the side link base based on the beam transmission is improved.

Description

Communication method, device and storage medium based on side link

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a side link (sidelink) based communication method, apparatus, and storage medium.

Background

In New Radio technologies (NR), particularly when the communication band is in the second frequency band (frequency range 2, fr 2), since the high frequency channel decays fast, in order to ensure coverage, beam-based transmission and reception are required. In order to achieve beam-based transmission, beam measurements are required. The NR mainly uses at least one of a synchronization signal block (Synchronization Signal Block, SSB) and a channel state information reference signal (channel state information reference signal, CSI-RS) for beam measurement.

Among them, beam measurement implementing side link sidelink communication is being studied.

Disclosure of Invention

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

According to a first aspect of embodiments of the present disclosure, there is provided a side link based communication method, the method being performed by a first device, the method comprising: determining a side link beam measurement result in response to the first device performing side link beam measurement based on a reference signal resource; the side chain beam measurement is indicated to a second device.

According to a second aspect of embodiments of the present disclosure, there is provided a side link based communication method performed by a second device, the second device being a network device, the method comprising: and receiving a side chain beam measurement result indicated by the first equipment.

According to a third aspect of embodiments of the present disclosure, there is provided a side link based communication method, the method being performed by a second device, the second device being a terminal device, the method comprising: and receiving a side chain beam measurement result indicated by the first equipment.

According to a fourth aspect of embodiments of the present disclosure, there is provided a side link-based communication apparatus for use in a first device, the apparatus comprising:

A determining module, configured to determine a side link beam measurement result in response to the first device performing side link beam measurement based on a reference signal resource;

and the sending module is used for indicating the side chain wave beam measurement result to the second equipment.

According to a fifth aspect of embodiments of the present disclosure, there is provided a side-link based communication apparatus for use in a second device, the second device being a network device, the apparatus comprising:

and the receiving module is used for receiving the side chain wave beam measurement result indicated by the first equipment.

According to a sixth aspect of embodiments of the present disclosure, there is provided a side link-based communication apparatus applied to a second device, where the second device is a terminal device, the apparatus including:

According to a fifth aspect of embodiments of the present disclosure, there is provided a side link based communication device comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: the method described in the first aspect and any of its embodiments above is performed.

According to a sixth aspect of embodiments of the present disclosure, there is provided a side link based communication device, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: the method described in the second aspect and any of its embodiments above is performed.

According to a seventh aspect of embodiments of the present disclosure, there is provided a side link based communication apparatus comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: the method described in the third aspect and any of its embodiments above is performed.

According to an eighth aspect of embodiments of the present disclosure, there is provided a storage medium having stored therein instructions which, when executed by a processor of a first device, enable the first device to perform the method as described in the first aspect and any one of its embodiments.

According to a ninth aspect of embodiments of the present disclosure, there is provided a storage medium having instructions stored therein, which when executed by a processor of a network device, enable the network device to perform the method as described in the above second aspect and any one of its embodiments.

According to a tenth aspect of embodiments of the present disclosure, there is provided a storage medium having instructions stored therein, which when executed by a processor of a terminal device, enable the terminal device to perform the method as described in the above third aspect and any one of its embodiments.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: and responding to the side link beam measurement by the first equipment based on the reference signal resource, determining a side link beam measurement result, and indicating the side link beam measurement result to the second equipment, so that the second equipment can select a beam to carry out beam transmission based on the side link beam measurement result, and the performance of the side link base based on the beam transmission is improved.

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

Drawings

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

Fig. 1 is a schematic diagram of a wireless communication system, according to an example embodiment.

Fig. 2 is a flow chart illustrating a method of side-link based communication according to an exemplary embodiment.

Fig. 3 is a flow chart illustrating a method of side-link based communication according to an exemplary embodiment.

Fig. 4 is a flow chart illustrating a method of side-link based communication according to an exemplary embodiment.

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

Fig. 6 is a flow chart illustrating a method of side-link based communication according to an exemplary embodiment.

Fig. 7 is a flow chart illustrating a method of side-link based communication according to an exemplary embodiment.

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

Fig. 9 is a flow chart illustrating a method of side-link based communication according to an exemplary embodiment.

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

Fig. 11 is a block diagram of a side-link based communication device, according to an example embodiment.

Fig. 12 is a block diagram of a side-link based communication device, according to an example embodiment.

Fig. 13 is a block diagram illustrating a side-link based communication device according to an example embodiment.

Fig. 14 is a block diagram illustrating a side-link based communication device in accordance with an exemplary embodiment.

Detailed Description

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

The communication method based on the sidelink provided by the embodiment of the disclosure can be applied to the wireless communication system shown in fig. 1. Referring to fig. 1, the wireless communication system includes a terminal and a network device. The terminal is connected with the network equipment through wireless resources and performs data transmission. Among them, the terminals can also carry out the sidelink communication based on the PC5 interface.

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

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

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

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

In New Radio technologies (NR), particularly when the communication band is in the second frequency band (frequency range 2, fr 2), since the high frequency channel decays fast, in order to ensure coverage, beam-based transmission and reception are required. In order to achieve beam-based transmission, beam measurements are required. At least one of SSB and CSI-RS is mainly used in NR for beam measurement.

The beams (beams), which may also be referred to as spatial relationship information (spatial relation information), spatial configuration (spatial setting), spatial reception parameters (Spatial Rx parameter), transmit spatial filter (Tx spatial filter), spatial reception filter (spatial domain receive filters), transmission configuration indication (transmission configuration indication, TCI) status, quasi co-location (quasi co location, QCL) type D, etc.

Currently, beam measurements that implement sidelink-based communications are being studied. The related art has already provided a resource allocation and transmission method of CSI-RS based on beam measurement of sidelink communication, and how to report the beam measurement result based on sidelink communication is still a problem to be solved.

Based on the above, the embodiment of the disclosure provides a communication method based on sidelink, when a terminal device performing sidelink communication performs sidelink beam measurement based on a reference signal resource, a sidelink beam measurement result is determined, and the sidelink beam measurement result is indicated to a network device or other terminal devices performing sidelink communication, so that beam transmission is performed by selecting a beam based on the sidelink beam measurement result, and performance of the sidelink based on beam transmission is improved.

For convenience of description in the embodiments of the present disclosure, a terminal device that determines a sidelink beam measurement result and indicates the sidelink beam measurement result is referred to as a first device. A terminal device or network device that determines a sidelink beam measurement result based on the indication of the first device is referred to as a second device.

Fig. 2 is a flowchart illustrating a sidelink-based communication method, as shown in fig. 2, performed by a first device, according to an exemplary embodiment, including the following steps.

In step S21, in response to the first device performing the sidelink beam measurement based on the reference signal resource, a sidelink beam measurement result is determined.

The reference signal resources comprise side link synchronization signals and physical broadcast channel Block identification (sidelink-synchronization signal/physical broadcast channel Block, S-SS/PSBCH Block) resources and/or side link channel state information reference signal (sidelink channel state information reference signal, sidelink CSI-RS) resources, and the reference signals comprise S-SS/PSBCH Block and/or sidelink CSI-RS. The reference signal resource is configured by the second device for the first device, the second device may be a network device and/or a second terminal device, and the first device is the first terminal device.

In an embodiment, a network device and/or a second terminal device in the sidelink configures a reference signal resource set for beam measurement, and the first device measures reference signal resources in the reference signal resource set to determine a beam measurement result.

In step S22, the sidelink beam measurement result is indicated to the second device.

In one embodiment, a first device explicitly transmits a sidelink beam measurement to a second device.

In another embodiment, the first device implicitly indicates the sidelink beam measurement to the second device.

In the embodiment of the disclosure, when the first device performs sidelink beam measurement based on the reference signal resource, a sidelink beam measurement result is determined, and the sidelink beam measurement result is indicated to the second device, so that the second device can select a beam to perform beam transmission based on the sidelink beam measurement result, and the performance of the sidelink based on the beam transmission is improved.

In the communication method based on the sidelink provided in the embodiment of the present disclosure, after the first device performs sidelink beam measurement based on the reference signal resource, the sidelink beam measurement result may be fed back to the network device. At this time, the first device is a first terminal device, and the second device is a network device. That is, the first terminal device indicates the sidelink beam measurement result to the network device.

In the communication method based on the sidelink provided in the embodiment of the present disclosure, the first device may send the sidelink beam measurement result to the second device based on a channel state information CSI feedback mechanism of a physical uplink control channel (physical uplink control channel, PUCCH) or a physical uplink shared channel (physical uplink shared channel, PUSCH). As shown in fig. 3, the method comprises the following steps:

in step S31, in response to the first terminal device performing sidelink beam measurement based on the reference signal resource, a sidelink beam measurement result is determined.

In step S32, a sidelink beam measurement result is sent to the network device based on the CSI feedback mechanism of the PUCCH or PUSCH.

In the embodiment of the disclosure, in the conventional NR, the beam measurement result performed by the terminal is fed back to the network device based on the CSI feedback mechanism. Therefore, in the sidelink-based communication method provided in the embodiment of the present disclosure, when the first device indicates the sidelink beam measurement result to the network device, the beam measurement result may be sent to the network device by multiplexing the CSI feedback mechanism. That is, the first device in the sidelink sends the sidelink beam measurement result to the network device based on the CSI feedback mechanism of the PUCCH or PUSCH.

In the communication method based on the sidelink provided in the embodiment of the present disclosure, after the first device performs sidelink beam measurement based on the reference signal resource, the sidelink beam measurement result may be fed back to the second terminal device. At this time, the first device is a first terminal device, and the second device is a second terminal device. That is, the first terminal device transmits the beam measurement result to the second terminal device.

In the communication method based on the sidelink provided by the embodiment of the disclosure, the first device can indicate the sidelink beam measurement result to the second device based on (Radio Resource Control, RRC) signaling through a PC5 interface between the first terminal device and the second terminal device, or based on a physical sidelink shared channel (Physical Sidelink Share Channel, PSSCH), or based on a physical sidelink control channel (Physical Sidelink Control Channel, PSCCH), or based on a physical sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH). As shown in fig. 4, the method comprises the following steps:

in step S41, in response to the first terminal device performing sidelink beam measurement based on the reference signal resource, a sidelink beam measurement result is determined.

In step S42, the sidelink beam measurement result is sent to the network device through the PC5 interface between the first terminal device and the second terminal device, or PSSCH, or PSCCH, or PSFCH, based on RRC signaling.

In the communication method based on the sidelink provided in the embodiment of the present disclosure, the first device may send the sidelink beam measurement result to the second device through a PC5 interface between the first terminal device and the second terminal device based on radio resource control RRC signaling.

In the communication method based on the sidelink provided by the embodiment of the disclosure, the first device may also send the sidelink beam measurement result to the second device through the PSSCH. At this time, the beam measurement result may be carried in a media access control unit (Medium Access Control Control Element, MAC CE) for indicating a sidelink channel state information report. This is because the sidelink CSI feedback mechanism, i.e., SL CSI reporting MAC CE, includes feedback content, then the beam measurements in sidelink may also be fed back by enhancing SL CSI reporting MAC CE, or a new SL MAC CE may be designed to include the beam measurements.

In one implementation, the embodiment of the present disclosure may be enhanced by an information domain of SL CSI reporting MAC CE, which is referred to as a first information domain for convenience of description. I.e. SL CSI reporting MAC CE can comprise a first information field.

Wherein SL CSI reporting MAC CE can be realized by the following steps: in one embodiment, the first information field is used to indicate whether CSI is included in the MAC-CE and whether beam measurements are included in the MAC-CE. In another embodiment, the first information field is used to indicate that the MAC-CE contains CSI or beam measurements. In yet another embodiment, the first information field is used to indicate beam measurements. The beam measurement results of the new SL MAC CE indication sidelink may also be designed in the embodiments of the present disclosure. In the embodiment of the disclosure, if a new SL MAC CE is used to indicate the beam measurement result of the sidelink, the new MAC CE may be directly used to indicate the beam measurement result, without indicating whether the MAC CE includes the beam measurement result. I.e. the SL MAC CE for containing the sidelink beam measurements is a different MAC CE than the SL MAC CE for containing CSI reporting.

In the method for communication based on sidelink provided in the embodiment of the present disclosure, the first device may further indicate a sidelink beam measurement result to the second device based on the PSFCH. At this time, the beam measurement result may be based on an implicit indication of PSFCH carrying hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) feedback of the PSSCH. Wherein, PSFCH has a corresponding relation with PSSCH, PSSCH has a corresponding relation with reference signal resource. Wherein, the PSSCH and the reference signal resource have a corresponding relation to at least one of the following: PSSCH and reference signal resource are transmitted in the same time slot; the PSSCH and the reference signal resource are (Frequency Division Multiplexing, FDM) modes, namely, are transmitted on the same symbol; and the PSSCH and the reference signal resource are (Time Division Multiplexing, TDM) mode, i.e. transmitted on different symbols.

It can be appreciated that, in the embodiments of the present disclosure, the manner in which the PSFCH based on the HARQ feedback carrying the PSSCH implicitly indicates the beam measurement result can indicate the beam corresponding to the reference signal resource, but does not indicate the beam quality.

In the embodiment of the present disclosure, the implicit indication beam measurement result of the PSFCH based on the HARQ feedback carrying the PSSCH may be that if the reference signals in each reference signal resource have a corresponding relationship with the PSSCH, and the PSFCH resources corresponding to each PSSCH are different, the HARQ correct response command (ACKnowledge, ACK)/error response command (Negative ACKnowledge, NACK) feedback corresponding to the PSSCH may be sent on the PSFCH of the PSSCH corresponding to the reference signal resource corresponding to the selected beam, that is, implicitly indicating which reference signal resource corresponds to the selected beam.

For example, the first PSSCH and the first reference signal resource have a corresponding relationship, the second PSSCH and the second reference signal resource have a corresponding relationship, the first reference signal resource and the second reference signal resource correspond to different beam directions, and the data sent by the first PSSCH and the second PSSCH may be the same or different (tend to be the same). And the first PSSCH corresponds to the first PSFCH and the second PSSCH corresponds to the second PSFCH. If the terminal measures that the beam measurement quality on the first reference signal resource is good, the terminal selects the HARQ ACK/NACK fed back to the first PSSCH on the first PSFCH, and then implicitly informs the second device that the terminal selects the beam corresponding to the first reference signal resource. Wherein the PSSCH has a corresponding relation with the reference signal resource and can comprise at least one of the following: the PSSCH and the reference signal resource are transmitted in the same time slot, the PSSCH and the reference signal resource are transmitted in an FDM mode, and the PSSCH and the reference signal resource are transmitted in a TDM mode.

In an embodiment of the present disclosure, the beam measurement result includes at least one of the following sequence numbers a to b:

a. at least one reference signal resource identifier;

b. and measuring the quality of the beam corresponding to the at least one reference signal resource.

In the embodiment of the present disclosure, the reference signal resource identifier includes at least one of the following sequence numbers a to d:

a, a sidelink CSI-RS resource identifier;

b.S-SS/PSBCH Block identification;

c. a time slot identifier corresponding to the reference signal resource;

d. and the micro time slot identification corresponding to the reference signal resource.

It can be understood that if there is no reference signal resource identifier, but there is a slot identifier or a micro-slot identifier corresponding to the reference signal resource, the slot identifier or the micro-slot identifier corresponding to the reference signal resource is used. The minislot is mini-slot. mini-slots are relative to slots as time units. When scheduling is performed by taking slot as a time unit, the occupied number of symbols is 3 minimum; the number of symbols occupied by mini-slots may be 1 or 2. And a slot may contain multiple scheduled mini-slots of time units. One mini-slot may also occupy the symbols of two adjacent slots.

In the embodiment of the disclosure, the reference signal resource identifier further includes a PSSCH identifier corresponding to the reference signal resource, that is, an identifier of a PSSCH having a corresponding relation with the reference signal resource, where the PSSCH identifier may include a PSFCH identifier corresponding to the PSSCH and/or an HARQ process number corresponding to the PSSCH (processing number). Wherein the PSSCH having a correspondence with the reference signal resource includes at least one of: the PSSCH has a corresponding relation with the reference signal resource and comprises at least one of the following: the PSSCH and the reference signal resource are transmitted in the same time slot, the PSSCH and the reference signal resource are transmitted in an FDM mode, and the PSSCH and the reference signal resource are transmitted in a TDM mode.

In an embodiment of the present disclosure, the beam measurement quality of the reference signal includes at least one of the following sequence numbers a to e:

a. layer one reference signal received power (L1-RSRP);

b. layer one signal to interference plus noise ratio (L1-SINR);

c. reference signal received power (L3-RSRP) of layer three;

d. reference signal received quality (L3-RSRQ) of layer three;

e. layer three signal to interference plus noise ratio (L3-SINR).

Fig. 5 is a flowchart illustrating a method of sidelink-based communication, as depicted in fig. 5, performed by a first device, including the following steps, according to an exemplary embodiment.

In step S51, a beam measurement request transmitted by the second device is received.

In step S52, in response to the first device performing the sidelink beam measurement based on the reference signal resource, a sidelink beam measurement result is determined.

In step S53, the sidelink beam measurement result is indicated to the second device.

In the embodiment of the disclosure, the performing, by the first device, the sidelink beam measurement based on the reference signal resource may be performed based on a beam measurement request sent by the second device.

In the disclosed embodiments, the beam measurement request may be carried in side chain control information (Sidelink Control Information, SCI). Alternatively, the beam measurement request may be carried in downlink control information (Downlink Control Information, DCI). Wherein, when the beam measurement request is carried in the DCI, the network equipment sends the beam measurement request.

In the disclosed embodiment, SCI includes side link control information 2A (SCI 2-A) or side link control information 2C (SCI 2-C).

Wherein SCI 2-a refers to a conventional SCI for decoding a PSSCH, HARQ information including the PSSCH, and may further include at least one of the following sequence numbers a to h:

a.HARQ process number；

b. a new data indication (New data indicator);

c. redundancy versions (Redundancy version, RV);

d. source identification (Source ID);

e. destination identification (Destination ID);

harq feedback on/off indication (feedback enabled/disabled indicator);

g. a communication type indication (Cast type indicator);

csi request (request).

SCI2-C refers to an SCI for decoding a PSSCH and providing inter-device (inter-UE) cooperation related information, and may further include at least one of the following sequence numbers a to m:

a.HARQ process number；

b.New data indicator；

c. redundancy Version (RV);

d.Source ID；

e.Destination ID；

f.HARQ feedback enabled/disabled indicator；

g.CSI request；

h. providing/requesting an indication (provisioning/Requesting indicator);

i. a first resource location (First resource location);

j. a reference slot position (Reference slot location);

k. a resource setting type (Resource set type);

a lowest subchannel index (Lowest subChannel indices);

m. Padding bits (Padding bits).

In an embodiment of the disclosure, the SCI may include a second information field for indicating a beam measurement request, where different values of different bits of the second information field are used to indicate a CSI request and/or a beam measurement request. Further, SCI includes side chain control information 1A (SCI 1-A) or side chain control information 2B (SCI 2-B) or other SCIs. Wherein SCI 1-a refers to SCI used for PSSCH scheduling and second stage SCI scheduling, and may further include at least one of the following sequence numbers a to m:

a. Priority (Priority);

b. -time resource allocation (Time resource assignment);

c. demodulation reference symbols (Demodulation Reference Symbol, DMRS) pattern;

d. second stage SCI format (2 nd-stage SCI format);

e. beta offset indicator (beta_offset indicator);

dmrs port (port) number;

g. modulation and coding strategies (Modulation and coding scheme, MCS);

h. an additional MCS table indication (Additional MCS table indicator);

PSFCH signaling overhead indication (overhead indication);

j. reserved bits (Reserved);

k. a conflict information receiving identification (Conflict information receiver flag);

high-level parameter indication (higher layer parameter indication);

m. others (other).

Further, a third information field for indicating a beam measurement request is included in SCI 1-A or SCI 2-B or other SCIs. Wherein SCI 2-B refers to SCI for decoding PSSCH when HARQ-ACK for HARQ operation includes NACK only or does not include HARQ-ACK information, and may further include at least one of the following sequence numbers a to h:

a.HARQ process number；

b.New data indicator；

c. redundancy Version (RV);

d.Source ID；

e.Destination ID；

f.HARQ feedback enabled/disabled indicator；

g. zone identification (Zone ID);

h. communication distance requirements (Communication range requirement).

In the disclosed embodiment, the other SCIs are SCIs for indicating beam measurement requests that are different from the currently existing SCIs, i.e., different from the new SCIs other than SCI 1-A, SCI 2-A, SCI 2-B, and SCI 2-C.

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

Fig. 6 is a flowchart illustrating a method of sidelink-based communication, as shown in fig. 6, performed by a second device, which is a network device, according to an exemplary embodiment, the method comprising the following steps.

In step S61, a sidelink beam measurement result indicated by the first device is received.

The first device is a first terminal device.

In the embodiment of the disclosure, the second device receives the sidelink beam measurement result indicated by the first device, so that the second device can select a beam to perform beam transmission based on the sidelink beam measurement result, and the performance of the sidelink based on the beam transmission is improved.

In the communication method based on the sidelink provided by the embodiment of the disclosure, the first device can send the sidelink beam measurement result to the second device based on the channel state information CSI feedback mechanism of the PUCCH or PUSCH.

In the embodiment of the disclosure, in the conventional NR, the beam measurement result performed by the terminal is fed back to the network device based on the CSI feedback mechanism. Therefore, in the sidelink-based communication method provided in the embodiment of the present disclosure, when the first device indicates the sidelink beam measurement result to the network device, the beam measurement result may be sent to the network device by multiplexing the CSI feedback mechanism. That is, the second device in the sidelink receives the sidelink beam measurement result sent by the first device based on the CSI feedback mechanism of the PUCCH or PUSCH.

a. at least one reference signal resource identifier;

b. the beam of at least one reference signal measures quality.

The reference signal resource comprises an S-SS/PSBCH Block resource and/or a sidelink CSI-RS resource, and the reference signal comprises an S-SS/PSBCH Block and/or a sidelink CSI-RS. The reference signal resources are configured for the first device by the network device or the second terminal device.

In one embodiment, a network device in a sidelink configures a reference signal resource set for beam measurement, so that a first device can measure reference signal resources in the reference signal resource set to determine a beam measurement result.

a, a reference signal CSI-RS resource identifier of a sidelink channel state information;

a sidelink synchronizing signal SS and a physical broadcast channel PBCH block identifier;

c. a time slot identifier corresponding to the reference signal resource;

d. and the micro time slot identifier corresponding to the reference signal resource.

In the embodiment of the present disclosure, the reference signal resource identifier further includes a PSSCH identifier corresponding to the reference signal resource, that is, an identifier of a PSSCH having a corresponding relationship with the reference signal resource, where the PSSCH identifier may include a PSFCH identifier corresponding to the PSSCH and/or a HARQ processing number corresponding to the PSSCH. The PSSCH has a corresponding relation with the reference signal resource and comprises at least one of the following: the PSSCH and the reference signal resource are transmitted in the same time slot, the PSSCH and the reference signal resource are transmitted in an FDM mode, and the PSSCH and the reference signal resource are transmitted in a TDM mode.

a.L1-RSRP；

b.L1-SINR；

c.L3-RSRP；

d.L3-RSRQ

e.L3-SINR。

fig. 7 is a flowchart illustrating a method of sidelink-based communication, as depicted in fig. 7, performed by a second device, including the following steps, according to an exemplary embodiment.

In step S71, a beam measurement request is transmitted to the first device.

In step S72, a sidelink beam measurement result indicated by the first device is received.

In the embodiment of the present disclosure, the beam measurement request may be carried in the sidelink SCI. Alternatively, the beam measurement request may be carried in DCI.

In the disclosed embodiment, SCI includes sidelink control information 2A (SCI 2-A) or sidelink control information 2C (SCI 2-C). Wherein SCI 2-a refers to a conventional SCI for decoding a PSSCH, HARQ information including the PSSCH, and may further include at least one of the following sequence numbers a to h:

a.HARQ process number；

b.New data indicator；

c. redundancy Version (RV);

d.Source ID；

e.Destination ID；

f.HARQ feedback enabled/disabled indicator；

g.Cast type indicator；

h.CSI request。

SCI 2-C refers to SCI for decoding PSSCH and providing inter-UE cooperation related information, and may further include at least one of the following sequence numbers a to m:

a.HARQ process number；

b.New data indicator；

c. redundancy Version (RV);

d.Source ID；

e.Destination ID；

f.HARQ feedback enabled/disabled indicator；

g.CSI request；

h.Providing/Requesting indicator；

i.First resource location；

j.Reference slot location；

k.Resource set type；

l.Lowest subChannel indices；

m.Padding bits。

in an embodiment of the disclosure, the SCI may include a second information field for indicating a beam measurement request, where different values of different bits of the second information field are used to indicate a CSI request and/or a beam measurement request. Further, SCI includes sidelink control information 1A (SCI 1-A) or sidelink control information 2B (SCI 2-B) or other SCIs. Wherein SCI 1-a refers to SCI used for PSSCH scheduling and second stage SCI scheduling, and may further include at least one of the following sequence numbers a to m:

a.Priority；

b.Time resource assignment；

c.DMRS pattern；

d.2nd-stage SCI format；

e.Beta_offset indicator；

dmrs port number;

g. modulation and Coding Strategy (MCS);

h.Additional MCS table indicator；

i.PSFCH overhead indication；

j.Reserved；

k.Conflict information receiver flag；

l.higher layer parameter indication；

m.otherwise。

in the embodiment of the present disclosure, SCI may include sidelink control information 1A or sidelink control information 2B or other SCI.

Further, a third information field for indicating the beam measurement request is included in SCI 1-A or SCI 2-B or other SCIs. Wherein SCI 2-B refers to SCI for decoding PSSCH when HARQ-ACK for HARQ operation includes NACK only or does not include HARQ-ACK information, and may further include at least one of the following sequence numbers a to h:

a.HARQ process number；

b.New data indicator；

c. Redundancy Version (RV);

d.Source ID；

e.Destination ID；

f.HARQ feedback enabled/disabled indicator；

g.Zone ID；

h.Communication range requirement。

Fig. 8 is a flowchart illustrating a method of communication based on sidelink, as shown in fig. 8, performed by a second device, which is a terminal device, according to an exemplary embodiment, comprising the following steps.

In step S81, a sidelink beam measurement result indicated by the first device is received.

In the embodiment of the disclosure, the second device receives the sidelink beam measurement result indicated by the first device, so that the second device can select a beam to perform beam transmission based on the sidelink beam measurement result, and the performance of the sidelink based on the beam transmission is improved. The first equipment is first terminal equipment, and the second equipment is second terminal equipment.

In the communication method based on the sidelink provided by the embodiment of the disclosure, the first device can indicate the sidelink beam measurement result to the second device based on the RRC signaling through the PC5 interface between the first terminal device and the second terminal device, or based on the PSSCH, or based on the PSCCH, or based on the PSFCH.

In the communication method based on the sidelink provided by the embodiment of the disclosure, the first device may also send the sidelink beam measurement result to the second device through the PSSCH. At this time, the beam measurement result may be carried in a MAC CE for indicating a sidelink channel state information report. This is because the sidelink CSI feedback mechanism, i.e., SL CSI reporting MAC CE, includes feedback content, then the beam measurements in sidelink may also be fed back by enhancing SL CSI reporting MAC CE, or a new SL MAC CE may be designed to include the beam measurements.

The enhancement of SL CSI reporting MAC CE can be achieved as follows: in one embodiment, the MAC CE may include a first information field for indicating whether CSI is included in the MAC-CE and whether beam measurements are included in the MAC-CE. In another embodiment, the first information field is used to indicate that the MAC-CE contains CSI or beam measurements. In yet another embodiment, the first information field is used to indicate beam measurements. I.e. the SL MAC CE for containing the sidelink beam measurements is a different MAC CE than the SL MAC CE for containing CSI reporting.

In the embodiment of the disclosure, if a new SL MAC CE is used to indicate the beam measurement result of the sidelink, the new MAC CE may be directly used to include the beam measurement result, without indicating that the MAC CE includes the beam measurement result. I.e. the SL MAC CE for containing the sidelink beam measurements is a different MAC CE than the SL MAC CE for containing CSI reporting.

In the method for communication based on sidelink provided in the embodiment of the present disclosure, the first device may further indicate a sidelink beam measurement result to the second device based on the PSFCH. At this time, the beam measurement result may be based on the PSFCH implicit indication of HARQ feedback carrying the PSSCH. Wherein, PSFCH has a corresponding relation with PSSCH, PSSCH has a corresponding relation with reference signal resource. Wherein, the PSSCH and the reference signal resource have a corresponding relation to at least one of the following: PSSCH and reference signal resource are transmitted in the same time slot; the PSSCH and the reference signal resource are transmitted in the (Frequency Division Multiplexing, FDM) mode, namely on the same symbol; and PSSCH and reference signal resources are TDM mode, i.e. sent on different symbols.

In an implementation manner, a second terminal device in the sidelink configures a reference signal resource set for beam measurement, so that a first device can measure reference signal resources in the reference signal resource set to determine a beam measurement result.

In the embodiment of the present disclosure, the implicit indication beam measurement result of the PSFCH based on the HARQ feedback carrying the PSSCH may be that if the reference signals in each reference signal resource have a corresponding relationship with the PSSCH, and the PSFCH resources corresponding to each PSSCH are different, the HARQ ACK/NACK feedback corresponding to the PSSCH may be sent on the PSFCH of the PSSCH corresponding to the reference signal resource corresponding to the selected beam, that is, implicitly indicates which reference signal resource corresponds to the selected beam.

a. at least one reference signal resource identifier;

c. a time slot identifier corresponding to the reference signal resource;

It can be understood that if there is no reference signal resource identifier, only the time slot identifier or the micro time slot identifier corresponding to the reference signal resource is used. The minislot is mini-slot. mini-slots are relative to slots as time units. When scheduling is performed by taking slot as a time unit, the occupied number of symbols is 3 minimum; the number of symbols occupied by mini-slots may be 1 or 2. And a slot may contain multiple scheduled mini-slots of time units. One mini-slot may also occupy the symbols of two adjacent slots.

In the embodiment of the present disclosure, the reference signal resource identifier further includes a PSSCH identifier corresponding to the reference signal resource, that is, an identifier of a PSSCH having a corresponding relationship with the reference signal resource, where the PSSCH identifier may include a PSFCH identifier corresponding to the PSSCH and/or a HARQ processing number corresponding to the PSSCH. Wherein the PSSCH has a corresponding relation with the reference signal resource and can comprise at least one of the following: the PSSCH and the reference signal resource are transmitted in the same time slot, the PSSCH and the reference signal resource are transmitted in an FDM mode, and the PSSCH and the reference signal resource are transmitted in a TDM mode.

a.L1-RSRP；

b.L1-SINR；

c.L3-RSRP；

d.L3-RSRQ

e.L3-SINR。

fig. 9 is a flowchart illustrating a method of sidelink-based communication, as depicted in fig. 9, performed by a second device, comprising the steps of:

in step S91, a beam measurement request is sent to the first device.

In step S92, a sidelink beam measurement result indicated by the first device is received.

In the disclosed embodiment, SCI includes sidelink control information 2A (SCI 2-A) or sidelink control information 2C (SCI 2-C).

Wherein, (SCI 2-a) refers to a conventional SCI for decoding a PSSCH, HARQ information including the PSSCH, and may further include at least one of the following sequence numbers a to h:

a.HARQ process number；

b.New data indicator；

c. redundancy Version (RV);

d.Source ID；

e.Destination ID；

f.HARQ feedback enabled/disabled indicator；

g.Cast type indicator；

h.CSI request。

a.HARQ process number；

b.New data indicator；

c. redundancy Version (RV);

d.Source ID；

e.Destination ID；

f.HARQ feedback enabled/disabled indicator；

g.CSI request；

h.Providing/Requesting indicator；

i.First resource location；

j.Reference slot location；

k.Resource set type；

l.Lowest subChannel indices；

m.Padding bits。

in an embodiment of the disclosure, the SCI may include a second information field for indicating a beam measurement request, where different values of different bits of the second information field are used to indicate a CSI request and/or a beam measurement request. Further, SCI includes SCI 1-A or SCI 2-B or other SCIs. Wherein SCI 1-a refers to SCI used for PSSCH scheduling and second stage SCI scheduling, and may further include at least one of the following sequence numbers a to m:

a.Priority；

b.Time resource assignment；

c.DMRS pattern；

d.2nd-stage SCI format；

e.Beta_offset indicator；

dmrs port number;

g. modulation and Coding Strategy (MCS);

h.Additional MCS table indicator；

i.PSFCH overhead indication；

j.Reserved；

k.Conflict information receiver flag；

l.higher layer parameter indication；

m.otherwise。

further, a third information field for indicating the beam measurement request is included in SCI 1-A or SCI 2-B or other SCIs.

Wherein SCI 2-B refers to SCI for decoding PSSCH when HARQ-ACK for HARQ operation includes NACK only or does not include HARQ-ACK information, and may further include at least one of the following sequence numbers a to h:

a.HARQ process number；

b.New data indicator；

c. Redundancy Version (RV);

d.Source ID；

e.Destination ID；

f.HARQ feedback enabled/disabled indicator；

g.Zone ID；

h.Communication range requirement。

It may be understood that the technical implementation involved in the process of performing the sidelink-based communication by the second device in the embodiment of the present disclosure may be applicable to the process of performing the sidelink-based communication by the first device in the embodiment of the present disclosure, so some technical implementation descriptions of the process of performing the sidelink-based communication by the second device may be referred to the relevant descriptions in the process of performing the sidelink-based communication by the first device, which are not described herein.

It can be understood that the communication method based on the sidelink provided by the embodiment of the disclosure is applicable to a process of implementing the communication based on the sidelink in the interaction process of the first device and the second device. The process of implementing the sidelink communication by interaction between the first device and the second device is not described in detail in the embodiments of the present disclosure.

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

Based on the same conception, the embodiment of the disclosure also provides a communication device based on the sidelink.

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

Fig. 10 is a block diagram of a side-link based communication device, according to an example embodiment. Referring to fig. 10, the apparatus 100 includes a determination module 110 and a transmission module 120.

The determination module 110 is configured to determine a sidelink beam measurement responsive to the first device making a sidelink beam measurement based on the reference signal resource.

The transmitting module 120 is configured to indicate the side link beam measurement to the second device.

In the embodiment of the disclosure, the first device is a first terminal device, and the second device is a network device.

In an embodiment of the present disclosure, indicating a side link beam measurement result to a second device includes: and transmitting the side link beam measurement result to the second equipment based on a Channel State Information (CSI) feedback mechanism of the PUCCH or the PUSCH.

In the embodiment of the disclosure, the first device is a first terminal device, and the second device is a second terminal device.

In an embodiment of the present disclosure, indicating a side link beam measurement result to a second device includes:

transmitting a side link beam measurement result to the second device through a PC5 interface between the first terminal device and the second terminal device based on RRC signaling; or (b)

Transmitting the side link beam measurement result to the second device based on the PSSCH; or (b)

Transmitting the side link beam measurements to the second device based on the PSCCH; or (b)

The side link beam measurements are indicated to the second device based on the channel PSFCH.

In the disclosed embodiments, in response to transmitting a side link beam measurement result to a second device based on a physical side link shared channel PSSCH, the beam measurement result is carried in a medium access control unit MAC CE for indicating a side link channel state information report.

In the embodiment of the disclosure, a first information field is included in a MAC-CE; the first information field is used for indicating whether the MAC-CE contains CSI and whether the MAC-CE contains a beam measurement result; or (b)

The first information field is used for indicating that the MAC-CE contains CSI or a beam measurement result; or (b)

The first information field is used to indicate the beam measurement.

In an embodiment of the disclosure, in response to feeding back a channel PSFCH over a physical side link, indicating to a second device a sidelink beam measurement result based on an implicit indication of the PSFCH carrying HARQ feedback of the PSSCH;

wherein, PSFCH has a corresponding relation with PSSCH, PSSCH has a corresponding relation with reference signal resource.

In an embodiment of the present disclosure, the beam measurement results include at least one of:

at least one reference signal resource identifier;

the beam of at least one reference signal measures quality.

In an embodiment of the present disclosure, the reference signal resource identification includes at least one of:

a side link channel state information reference signal (CSI-RS) resource identifier;

side link synchronization signal SS and physical broadcast channel PBCH block identification;

a time slot identifier corresponding to the reference signal resource;

and the micro time slot identification corresponding to the reference signal resource.

In the embodiment of the disclosure, the reference signal resource identifier includes a PSSCH identifier corresponding to the reference signal resource, and the PSSCH identifier includes a PSFCH identifier corresponding to the PSSCH and/or HARQ processing number corresponding to the PSSCH.

In an embodiment of the present disclosure, the beam measurement quality of the reference signal includes at least one of:

L1-RSRP；

L1-SINR；

L3-RSRP；

L3-RSRQ

L3-SINR。

in an embodiment of the present disclosure, the method further includes: and receiving a beam measurement request sent by the second equipment.

In the embodiment of the present disclosure, the beam measurement request is carried in the side chain control information SCI or the beam measurement request is carried in the downlink control information.

In the disclosed embodiment, the SCI includes side link control information 2A or side link control information 2C.

In the embodiment of the disclosure, the SCI includes a second information field for indicating the beam measurement request, and different values of different bits of the second information field are used for indicating the CSI request and/or the beam measurement request.

In the disclosed embodiment, the SCI is included in the side link control information 1A or the side link control information 2B or other SCIs.

In the embodiment of the present disclosure, the side link control information 1A or the side link control information 2B or other SCI includes a third information field for indicating a beam measurement request.

In the embodiment of the present disclosure, the other SCI is an SCI for indicating a beam measurement request.

Fig. 11 is a block diagram of a side-link based communication device, according to an example embodiment. Referring to fig. 11, the apparatus 200 includes a first receiving module 210.

The first receiving module 210 is configured to receive side chain beam measurements indicated by the first device.

In an embodiment of the present disclosure, receiving a side chain beam measurement result indicated by a first device includes: and receiving a side chain wave beam measurement result sent by the first equipment based on a Channel State Information (CSI) feedback mechanism of the PUCCH or the PUSCH.

at least one reference signal resource identifier;

the beam of at least one reference signal measures quality.

a time slot identifier corresponding to the reference signal resource;

L1-RSRP；

L1-SINR；

L3-RSRP；

L3-RSRQ

L3-SINR。

in an embodiment of the present disclosure, the method further includes: a beam measurement request is sent to a first device.

Fig. 12 is a block diagram of a side-link based communication device, according to an example embodiment. Referring to fig. 12, the apparatus 300 includes a second receiving module 310.

The second receiving module 310 is configured to receive side chain beam measurements indicated by the first device.

In an embodiment of the present disclosure, receiving a side chain beam measurement result indicated by a first device includes:

receiving a side chain beam measurement result sent by the first equipment through a PC5 interface between the first equipment and the terminal equipment based on Radio Resource Control (RRC) signaling; or (b)

Based on PSSCH, receiving a side chain beam measurement result sent by the first equipment; or (b)

Transmitting the side chain beam measurement result to a second device based on the PSCCH; or (b)

And receiving a side chain beam measurement result indicated by the first equipment through the PSFCH.

In the embodiment of the disclosure, in response to receiving a side link beam measurement result sent by a first device based on a physical side link shared channel PSSCH, the beam measurement result is carried in a medium access control unit MAC CE for indicating a side link channel state information report.

In the embodiment of the disclosure, a first information field is included in a MAC-CE;

the first information field is used for indicating whether the MAC-CE contains CSI and whether the MAC-CE contains a beam measurement result; or (b)

The first information field is used to indicate the beam measurement.

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

Fig. 13 is a block diagram illustrating an apparatus 800 for side-link based communication, according to an example embodiment. For example, apparatus 800 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.

Referring to fig. 13, apparatus 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the apparatus 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interactions between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the apparatus 800. Examples of such data include instructions for any application or method operating on the device 800, contact data, phonebook data, messages, pictures, videos, and the like. The memory 804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power component 806 provides power to the various components of the device 800. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 800.

The multimedia component 808 includes a screen between the device 800 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the apparatus 800 is in an operational mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the device 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 further includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 814 includes one or more sensors for providing status assessment of various aspects of the apparatus 800. For example, the sensor assembly 814 may detect an on/off state of the device 800, a relative positioning of the components, such as a display and keypad of the device 800, the sensor assembly 814 may also detect a change in position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, an orientation or acceleration/deceleration of the device 800, and a change in temperature of the device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication between the apparatus 800 and other devices, either in a wired or wireless manner. The device 800 may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 804 including instructions executable by processor 820 of apparatus 800 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

Fig. 14 is a block diagram illustrating an apparatus 1100 for side-link based communication, according to an example embodiment. For example, apparatus 1100 may be provided as a server. Referring to FIG. 14, apparatus 1100 includes a processing component 1122 that further includes one or more processors and memory resources, represented by memory 1132, for storing instructions, such as application programs, executable by processing component 1122. The application programs stored in memory 1132 may include one or more modules each corresponding to a set of instructions. Further, processing component 1122 is configured to execute instructions to perform the sidelink-based communication methods described above

The apparatus 1100 may also include a power component 1126 configured to perform power management of the apparatus 1100, a wired or wireless network interface 1150 configured to connect the apparatus 1100 to a network, and an input-output (I/O) interface 1158. The device 1100 may operate based on an operating system stored in the memory 1132, such as Windows Server, mac OS XTM, unixTM, linuxTM, freeBSDTM, or the like.

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

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

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

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

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

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

Claims

1. A method of side-link based communication, the method performed by a first device, the method comprising:

determining a side link beam measurement result in response to the first device performing side link beam measurement based on a reference signal resource;

the side chain beam measurement is indicated to a second device.

2. The method of claim 1, wherein the first device is a first terminal device and the second device is a network device.

3. The method of claim 2, wherein the indicating the side chain beam measurement to the second device comprises:

And transmitting the side chain wave beam measuring result to the second equipment based on a Channel State Information (CSI) feedback mechanism of a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH).

4. The method of claim 1, wherein the first device is a first terminal device and the second device is a second terminal device.

5. The method of claim 4, wherein the indicating the side chain beam measurement to the second device comprises:

transmitting the side chain beam measurement result to a second device through a PC5 interface between the first terminal device and the second terminal device based on Radio Resource Control (RRC) signaling; or (b)

Transmitting the side chain beam measurement result to a second device based on the PSSCH; or (b)

Transmitting the side chain beam measurement result to a second device based on a physical side chain control channel PSCCH; or (b)

The side chain beam measurement is indicated to the second device based on a physical side chain feedback channel PSFCH.

6. The method of claim 5, wherein the side link beam measurement is transmitted to the second device in response to the physical side link shared channel, PSSCH, the beam measurement being carried in a medium access control element, MAC CE, for indicating side link channel state information reporting.

7. The method of claim 6, wherein the MAC-CE includes a first information field therein;

The first information field is used to indicate a beam measurement.

8. The method of claim 5, wherein the side-chain beam measurement is indicated to the second device in response to PSFCH over a physical side-chain feedback channel, the beam measurement being based on an implicit indication of PSFCH carrying hybrid automatic repeat request, HARQ, feedback;

the PSFCH and the PSSCH have a corresponding relation, and the PSSCH and the reference signal resource have a corresponding relation.

9. The method according to any of claims 1 to 8, wherein the beam measurements comprise at least one of:

at least one reference signal resource identifier;

the beam of at least one reference signal measures quality.

10. The method of claim 9, wherein the reference signal resource identification comprises at least one of:

a time slot identifier corresponding to the reference signal resource;

and the micro time slot identifier corresponding to the reference signal resource.

11. The method of claim 9, wherein the reference signal resource identifier comprises a PSSCH identifier corresponding to a reference signal resource, and wherein the PSSCH identifier comprises a PSFCH identifier corresponding to a PSSCH and/or a hybrid automatic repeat request HARQ process number corresponding to a PSSCH.

12. The method of claim 9, wherein the beam measurement quality of the reference signal comprises at least one of:

layer one reference signal received power L1-RSRP;

layer one signal to interference plus noise ratio L1-SINR;

reference signal received power L3-RSRP of layer three;

reference signal received quality L3-RSRQ for layer three

Layer three signal to interference plus noise ratio L3-SINR.

13. The method according to claim 1, wherein the method further comprises:

and receiving a beam measurement request sent by the second equipment.

14. The method according to claim 13, characterized in that the beam measurement request is carried in side chain control information SCI or in downlink control information.

15. The method of claim 14 wherein the SCI comprises side link control information 2A or side link control information 2C.

16. The method according to claim 14 or 15, characterized in that a second information field for indicating the beam measurement request is included in the SCI, and different values of different bits of the second information field are used for indicating CSI requests and/or the beam measurement requests.

17. The method of claim 14 wherein the SCI is included in side link control information 1A or side link control information 2B or other SCIs.

18. The method according to claim 17, characterized in that a third information field for indicating the beam measurement request is included in the side link control information 1A or side link control information 2B or other SCI.

19. The method of claim 17 wherein the other SCI is an SCI indicating the beam measurement request.

20. A method of side-link based communication, the method performed by a second device, the second device being a network device, the method comprising:

and receiving a side chain beam measurement result indicated by the first equipment.

21. The method of claim 20, wherein receiving side chain beam measurements indicated by the first device comprises:

and receiving the side chain beam measurement result sent by the first equipment based on a Channel State Information (CSI) feedback mechanism of a Physical Uplink Control Channel (PUCCH) or a Physical Uplink Shared Channel (PUSCH).

22. The method according to claim 20 or 21, wherein the beam measurements comprise at least one of:

at least one reference signal resource identifier;

the beam of at least one reference signal measures quality.

23. The method of claim 22, wherein the reference signal resource identification comprises at least one of:

a time slot identifier corresponding to the reference signal resource;

24. The method of claim 22, wherein the reference signal resource identification comprises a PSSCH identification corresponding to a reference signal resource, the PSSCH identification comprising a PSFCH identification corresponding to a PSSCH and/or a hybrid automatic repeat request, HARQ, process number corresponding to a PSSCH.

25. The method of claim 22, wherein the beam measurement quality of the reference signal comprises at least one of:

layer one reference signal received power L1-RSRP;

layer one signal to interference plus noise ratio L1-SINR;

reference signal received power L3-RSRP of layer three;

reference signal received quality L3-RSRQ for layer three

Layer three signal to interference plus noise ratio L3-SINR.

26. The method of claim 20, wherein the method further comprises:

and sending a beam measurement request to the first device.

27. The method according to claim 26, characterized in that the beam measurement request is carried in side chain control information SCI or in downlink control information.

28. The method of claim 27 wherein the SCI comprises side link control information 2A or side link control information 2C.

29. The method according to claim 26 or 27, characterized in that a second information field for indicating the beam measurement request is included in the SCI, and different values of different bits of the second information field are used for indicating CSI requests and/or the beam measurement requests.

30. The method of claim 27 wherein the SCI is included in side link control information 1A or side link control information 2B or other SCIs.

31. The method according to claim 30, characterized in that a third information field for indicating the beam measurement request is included in the side link control information 1A or side link control information 2B or other SCI.

32. The method of claim 30 wherein the other SCI is an SCI indicating the beam measurement request.

33. A method of side-link based communication, the method performed by a second device, the second device being a terminal device, the method comprising:

34. The method of claim 33, wherein receiving side chain beam measurements indicated by the first device comprises:

receiving the side chain beam measurement result sent by the first equipment through a PC5 interface between the first equipment and the terminal equipment based on Radio Resource Control (RRC) signaling; or (b)

Receiving the side link beam measurement result sent by the first device based on a physical side link shared channel PSSCH; or (b)

Receiving the side link beam measurement result sent by the first device based on a physical side link control channel PSCCH; or (b)

And receiving the side chain beam measurement result indicated by the first equipment through a physical side chain feedback channel PSFCH.

35. The method of claim 34, wherein the side link beam measurement transmitted by the first device is received in response to being based on a physical side link shared channel, PSSCH, the beam measurement being carried in a medium access control element, MAC CE, for indicating side link channel state information reporting.

36. The method of claim 35, wherein the MAC-CE includes a first information field therein;

The first information field is used to indicate a beam measurement.

37. The method of claim 34, wherein receiving the side-chain beam measurement indicated by the first device is responsive to PSFCH over a physical side-chain feedback channel, the beam measurement being based on an implicit indication of PSFCH carrying hybrid automatic repeat request, HARQ, feedback;

The PSFCH has a corresponding relation with the PSSCH, and the PSSCH has a corresponding relation with the reference signal resource.

38. The method according to any one of claims 32 to 37, wherein the beam measurements comprise at least one of:

at least one reference signal resource identifier;

the beam of at least one reference signal measures quality.

39. The method of claim 38, wherein the reference signal resource identification comprises at least one of:

a time slot identifier corresponding to the reference signal resource;

40. The method of claim 38, wherein the reference signal resource identifier comprises a PSSCH identifier corresponding to a reference signal resource, and wherein the PSSCH identifier comprises a PSFCH identifier corresponding to a PSSCH and/or a hybrid automatic repeat request HARQ process number corresponding to a PSSCH.

41. The method of claim 38, wherein the beam measurement quality of the reference signal comprises at least one of:

Layer one reference signal received power L1-RSRP;

layer one signal to interference plus noise ratio L1-SINR;

reference signal received power L3-RSRP of layer three;

reference signal received quality L3-RSRQ for layer three

Layer three signal to interference plus noise ratio L3-SINR.

42. The method of claim 33, wherein the method further comprises:

and sending a beam measurement request to the first device.

43. The method of claim 42, wherein the beam measurement request is carried in side chain control information SCI or the beam measurement request is carried in downlink control information.

44. The method of claim 43, wherein the SCI comprises side link control information 2A or side link control information 2C.

45. The method of claim 43 or 44 wherein a second information field is included in the SCI for indicating the beam measurement request, different values of different bits of the second information field being used for indicating CSI requests and/or the beam measurement requests.

46. The method of claim 43, wherein the SCI is included in side link control information 1A or side link control information 2B or other SCIs.

47. The method of claim 46 wherein a third information field for indicating the beam measurement request is included in the side link control information 1A or side link control information 2B or other SCI.

48. The method of claim 46 wherein the other SCI is a SCI indicating the beam measurement request.

49. A side-link based communication apparatus for use in a first device, the apparatus comprising:

50. A side-link based communication apparatus for use in a second device, the second device being a network device, the apparatus comprising:

and the first receiving module is used for receiving the side chain wave beam measurement result indicated by the first equipment.

51. A side link based communication apparatus for use in a second device, the second device being a terminal device, the apparatus comprising:

and the second receiving module is used for receiving the side chain wave beam measurement result indicated by the first equipment.

52. A side-link based communication device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: performing the method of any one of claims 1 to 19.

53. A side-link based communication device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: performing the method of any one of claims 20 to 32.

54. A side-link based communication device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: performing the method of any one of claims 33 to 48.

55. A storage medium having instructions stored therein that, when executed by a processor of a first device, enable the first device to perform the method of any one of claims 1 to 19.

56. A storage medium having instructions stored therein which, when executed by a processor of a network device, enable the network device to perform the method of any one of claims 20 to 32.

57. A storage medium having instructions stored therein which, when executed by a processor of a terminal device, enable the terminal device to perform the method of any one of claims 33 to 48.