WO2020063849A1

WO2020063849A1 - Unicast resource allocation method, node, and user equipment

Info

Publication number: WO2020063849A1
Application number: PCT/CN2019/108512
Authority: WO
Inventors: 冯媛; 郑方政; 赵锐; 李晨鑫
Original assignee: 电信科学技术研究院有限公司
Priority date: 2018-09-28
Filing date: 2019-09-27
Publication date: 2020-04-02

Abstract

Provided are a unicast resource allocation method and a device, the method comprising: Information regarding a first unicast resource is received from a second node, the first unicast resource and a corresponding transmission parameter being determined for a first node by the second node on the basis of perceptual information of the second node and on the basis of service-related information of the first node. Alternatively, a second unicast resource of the first node is determined, and, on the basis of pertinent information fed back by the second node, a subsequent transmission parameter corresponding to second unicast resource is adjusted.

Description

Unicast resource allocation method, node and user equipment

Cross-reference to related applications

This application claims the priority of Chinese Patent Application No. 201811141565.6 filed in China on September 28, 2018 and Chinese Patent Application No. 201811189902.9 filed in China on October 12, 2018, the entire contents of which are incorporated herein by reference. .

Technical field

Embodiments of the present disclosure relate to the field of communications technologies, and in particular, to a unicast resource allocation method, node, and user equipment.

Background technique

Vehicle-to-external information exchange (V2X) technology uses car-to-car, car-to-road test infrastructure, car-to-passenger wireless communication to sense the surrounding conditions of vehicles in real time, share road information, and provide timely warning It has become a research hotspot to solve road safety problems in various countries.

In the existing Long Term Evolution (LTE) V2X technology (for example, Release 14 (Rel-14) LTE V2X technology), a PC5 interface (also known as a PC5 interface) for transmitting data between User Equipment (UE) and UE It is called a straight-through link and is described as Sidelink in the protocol. It can already support the transmission of basic road safety-based services. Among them, it is mainly aimed at service packets with a data packet size of 50-1200 bytes, and the required service packets have a transmission reliability of greater than 95% within the specified coverage.

With the further development of the Internet of Vehicles technology, new application scenarios have emerged, such as: vehicle formation, advanced driving, sensor information sharing, and remote control applications. Some of these applications require communication between UEs in a group, or unicast communication between two UEs. Therefore, V2X systems need to consider scenarios such as unicast and multicast. However, there is currently no corresponding solution for how to implement unicast communication between UEs.

Summary of the Invention

An object of the embodiments of the present disclosure is to provide a unicast resource allocation method, a node, and a user equipment to solve the problem of unicast communication between UEs.

According to a first aspect of the embodiments of the present disclosure, there is provided a unicast resource allocation method applied to a first node, the method including: receiving information of a first unicast resource from a second node, the first unicast resource And the corresponding transmission parameters are determined by the second node for the first node according to the sensing information of the second node and the service-related information of the first node; or, determining the first node A second unicast resource, and determine a transmission parameter corresponding to the second unicast resource according to related information fed back by the second node.

Optionally, before the receiving the information of the first unicast resource from the second node, the method further includes: sending the service-related information of the first node to the second node.

Optionally, determining the transmission parameter corresponding to the second unicast resource according to the related information fed back by the second node includes: sending a first reference signal to the second node; and sending the first reference signal from the second node. Receiving channel quality indication CQI information of the first reference signal; and determining transmission parameters corresponding to the second unicast resource of the first node according to the CQI information.

Optionally, the sending a first reference signal to the second node includes sending the first reference signal to the second node through a control channel.

Optionally, the second unicast resource of the first node and the position of the first reference signal have a corresponding mapping relationship.

Optionally, determining the transmission parameter corresponding to the second unicast resource according to the related information fed back by the second node includes: performing the calculation according to a preset modulation and coding strategy (MSC). Sending of the second unicast resource, where the preset MCS is lower than the preset value, for example, the preset value is Quadrature Phase Shift Keying (QPSK) modulation, non-high-order modulation; from the second The node receives first feedback information, where the first feedback information is used to indicate a signal-to-noise ratio SNR and / or received power of the second node; and a second order of the first node according to the first feedback information The subsequent transmission parameters corresponding to the broadcast resource are adjusted.

Optionally, determining the transmission parameter corresponding to the second unicast resource according to the related information fed back by the second node includes: sending a scheduling allocation SA on the PSCCH to the second node; and from the second node Receiving a transmission parameter, which is selected by the second node for the first node according to the SA and the information sensed by the second node.

Optionally, the method further includes: when the first node does not receive the transmission parameter, re-transmitting a direct communication physical control channel PSCCH.

Optionally, the determining a transmission parameter corresponding to the second unicast resource according to the related information fed back by the second node includes sending a second reference signal to the second node; receiving from the second node Second feedback information for slow decay feedback; and adjusting a second unicast resource of the first node according to the second feedback information.

Optionally, determining the transmission parameter corresponding to the second unicast resource according to the related information fed back by the second node includes: receiving, from the second node, feedback on co-frequency, inter-frequency, or noise floor feedback. Third feedback information; adjusting subsequent transmission parameters corresponding to the second unicast resource according to the third feedback information.

Optionally, the third feedback information is used to indicate a channel interference situation of the second node, or the third feedback information is used to indicate an received signal strength indication of the second node.

According to a second aspect of the embodiments of the present disclosure, there is provided a unicast resource allocation method applied to a second node. The method includes: receiving, from a first node, service-related information of the first node; Determining the first unicast resource and corresponding transmission parameters of the first node and the perceptual information of the two nodes and the service-related information of the first node; and sending the first unicast to the first node Resource information; or feedback related information to the first node, where the related information is used to determine a transmission parameter corresponding to the second unicast resource of the first node.

Optionally, the method further includes: receiving a reception condition of the control information of the first node from a first node; and selecting a transmission for the first node according to the information sensed by the second node and the reception condition. Parameter; sending the transmission parameter to the first node.

Optionally, a first reference signal is received from the first node; and channel quality indication CQI information of the first reference signal is sent to the first node.

Optionally, the feedback of the related information to the first node includes: sending the first feedback information to the first node, where the first feedback information is used to indicate at least one of the following: confirmation of the second node Acknowledging the ACK, a non-acknowledgment NACK of the second node, a signal-to-noise ratio SNR of the second node, and a receiving power of the second node.

Optionally, the feedback of the related information to the first node includes: receiving a scheduling assignment SA from the first node; and determining a transmission parameter for the first selection according to the SA and the information perceived by the second node Sending the transmission parameter to the first node.

Optionally, the feedback of the related information to the first node includes: receiving a second reference signal from the first node; and sending the second feedback information about the slow decay feedback to the first node.

Optionally, the feedback of the related information to the first node includes: sending to the first node third feedback information for feedback on the same frequency, different frequency, or noise floor.

According to a third aspect of the embodiments of the present disclosure, a first node is provided, including: a first transceiver and a first processor, wherein the first transceiver is configured to receive a first unicast resource from a second node. The first unicast resource and the corresponding transmission parameters are determined by the second node for the first node according to the second node's sensing information and the first node's service-related information. The first processor is configured to determine a second unicast resource of the first node, and determine a transmission parameter corresponding to the second unicast resource according to related information fed back by the second node.

Optionally, the first transceiver is further configured to send service-related information of the first node to a second node.

Optionally, the first transceiver is further configured to send a first reference signal to the second node; and the first transceiver is further configured to receive the first reference signal from the second node. The channel quality indicates CQI information; the first processor is further configured to determine a transmission parameter corresponding to the second unicast resource of the first node according to the CQI information.

Optionally, the first transceiver is further configured to send the first reference signal to the second node through a control channel.

Optionally, the first transceiver is further configured to send a second unicast resource according to a preset MSC, where the preset MCS is lower than a preset value, for example, the preset value is QPSK modulation, which is not a high-order Modulation; receiving first feedback information from the second node, wherein the first feedback information is used to indicate at least one of: a acknowledgment response ACK of the second node, a non-acknowledgement response NACK of the second node, The SNR of the second node and the received power of the second node; the first processor is further configured to correspond to the second unicast resource of the first node according to the first feedback information The subsequent transmission parameters are adjusted.

Optionally, the first transceiver is further configured to send a scheduling allocation SA to the second node on a physical side link control channel (PSCCH), and the SA does not include the MCS of the corresponding resource. The transmission parameter only includes a position parameter; the first transceiver is further configured to receive a transmission parameter from the second node, and the transmission parameter is the second node's perception based on the SA and the second node's perception. The information is selected by the first node.

Optionally, the first transceiver is further configured to, when the first node does not receive the transmission parameter, re-send the direct communication physical control channel PSCCH.

Optionally, the first transceiver is further configured to send a second reference signal to the second node; the first transceiver is further configured to receive second feedback information from the second node; the The first processor is further configured to adjust a second unicast resource of the first node according to the second feedback information.

Optionally, the first transceiver is further configured to receive, from the second node, third feedback information on co-frequency, inter-frequency, or noise floor feedback; and the first processor is further configured to: The third feedback information adjusts subsequent transmission parameters corresponding to the second unicast resource.

According to a fourth aspect of the embodiments of the present disclosure, a second node is provided, including: a second transceiver and a second processor, wherein the second transceiver is configured to receive the first node from the first node Service-related information; the second processor is configured to determine a first unicast resource of the first node according to the perception information of the second node and service-related information of the first node, and Corresponding transmission parameters; the second transceiver is further configured to send information of the first unicast resource to the first node; the second transceiver is further configured to feedback related information to the first node, The related information is used to determine a transmission parameter corresponding to a second unicast resource of the first node.

Optionally, the second transceiver is further configured to receive the reception status of the control information of the first node from the first node; and the second processor is further configured to receive the information that is sensed by the second node. And the receiving situation, selecting a transmission parameter for the first node; the second transceiver is further configured to send the transmission parameter to the first node.

Optionally, the second transceiver is further configured to receive a first reference signal from the first node; the second transceiver is further configured to send the first reference signal to the first node. The channel quality indicates CQI information.

Optionally, the second transceiver is further configured to send first feedback information to the first node, where the first feedback information is used to indicate at least one of the following: an acknowledgement ACK from the second node The non-acknowledgment response of the second node NACKs the signal-to-noise ratio SNR of the second node and the received power of the second node.

Optionally, the second transceiver is further configured to receive a scheduling and assignment SA from the first node; the second processor is further configured to, according to the SA and the information perceived by the second node, be: The first selection determines a transmission parameter; the second transceiver is further configured to send the transmission parameter to the first node.

Optionally, the second transceiver is further configured to receive a second reference signal from the first node; the second transceiver is further configured to send a first feedback to the first node about the slow decay. Second feedback information.

Optionally, the second transceiver is further configured to send, to the first node, third feedback information on co-frequency, inter-frequency, or noise floor feedback.

According to a fifth aspect of the embodiments of the present disclosure, a first node is provided, including:

A first receiving module, configured to receive information of a first unicast resource from a second node, where the first unicast resource and corresponding transmission parameters are determined by the second node according to the sensing information of the second node, and Service-related information of the first node is determined by the first node;

A first determining module is configured to determine a second unicast resource of the first node, and determine a transmission parameter corresponding to the second unicast resource according to related information fed back by the second node.

Optionally, the first node further includes: a second sending module, configured to send service-related information of the first node to the second node.

Optionally, the second sending module is further configured to send a first reference signal to the second node; receive channel quality indication CQI information of the first reference signal from the second node; the first The node further includes: an adjustment module, configured to determine subsequent transmission parameters corresponding to the second unicast resource of the first node according to the CQI information.

Optionally, the second sending module is further configured to send the first reference signal to the second node through a control channel.

Optionally, the first receiving module is further configured to send a second unicast resource according to a preset MSC, where the preset MCS is lower than a preset value, for example, the preset value is quadrature phase shift keying (Quadrature Phase Shift Keyin, QPSK) modulation, non-high-order modulation; receiving first feedback information from the second node, wherein the first feedback information is used to indicate a signal-to-noise ratio SNR and / or of the second node Receiving power; and adjusting subsequent transmission parameters corresponding to the second unicast resource of the first node according to the first feedback information.

Optionally, the second sending module is further configured to send a scheduling and allocation SA to the second node on the PSCCH, where the SA does not include the MCS transmission parameters of the corresponding resources, but only the location parameters; the first receiving The module is further configured to receive a transmission parameter from the second node, where the transmission parameter is selected by the second node for the first node according to the SA and information sensed by the second node.

Optionally, the second sending module is further configured to, when the first node does not receive the transmission parameter, re-send the PSCCH of the physical communication channel for direct communication.

Optionally, the second sending module is further configured to send a second reference signal to the second node; the first receiving module is further configured to receive a first feedback signal for the slow decay from the second node. Two feedback information; the adjustment module is further configured to adjust the second unicast resource of the first node according to the second feedback information.

Optionally, the first receiving module is further configured to receive third feedback information on co-frequency, inter-frequency, or noise floor feedback from the second node; and the adjustment module is further configured to receive the third feedback information according to the third node. The feedback information adjusts subsequent transmission parameters corresponding to the second unicast resource.

According to a sixth aspect of the embodiments of the present disclosure, a second node is provided, including:

A second receiving module, configured to receive service-related information of the first node from a first node;

A second determining module, configured to determine a first unicast resource of the first node and corresponding transmission parameters according to the sensing information of the second node and service-related information of the first node;

A first sending module, configured to send information of the first unicast resource to the first node;

The feedback module is configured to feed back related information to the first node, where the related information is used to determine a transmission parameter corresponding to the second unicast resource of the first node.

Optionally, the feedback module is further configured to receive, from a first node, a reception condition of the control information of the first node; and based on the information sensed by the second node and the reception condition, the first node is Selecting a transmission parameter; and sending the transmission parameter to the first node.

Optionally, the feedback module is further configured to receive a first reference signal from the first node; and send channel quality indication CQI information of the first reference signal to the first node.

Optionally, the feedback module is further configured to send first feedback information to the first node, where the first feedback information is used to indicate at least one of the following: an acknowledgement ACK of the second node, The non-acknowledgment response of the second node NACKs the signal-to-noise ratio SNR of the second node, and the received power of the second node.

Optionally, the feedback module is further configured to receive a scheduling assignment SA from the first node; determine a transmission parameter for the first selection according to the SA and information sensed by the second node; The first node sends the transmission parameter.

Optionally, the feedback module is further configured to receive a second reference signal from the first node; and send second feedback information to the first node about the slow-fading feedback.

Optionally, the feedback module is further configured to send, to the first node, third feedback information on co-frequency, inter-frequency, or noise floor feedback.

According to an eighth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided. The computer-readable storage medium stores a program, and when the program is executed by a processor, the unicast resource according to the first aspect is implemented. Steps of the allocation method; or, steps of implementing the unicast resource allocation method according to the second aspect.

In the embodiment of the present disclosure, the first node receives information of the first unicast resource from the second node, or the first node determines the second unicast resource of the first node, and adjusts the second unicast resource with the second node according to the related information fed back by the second node. Subsequent transmission parameters corresponding to unicast resources enable unicast communication between UEs.

BRIEF DESCRIPTION OF THE DRAWINGS

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the detailed description of the alternative embodiments below. The drawings are only for the purpose of illustrating alternative embodiments and are not to be considered as limiting the present disclosure. Moreover, the same reference numerals are used throughout the drawings to refer to the same parts. In the drawings:

FIG. 1 is a schematic diagram of a temporal relationship between a perception window and a selection window;

2 is a schematic structural diagram of a wireless communication system according to an embodiment of the present disclosure;

FIG. 3a is one of the schematic flowcharts of a unicast resource allocation method according to an embodiment of the present disclosure; FIG.

3b is a second schematic flowchart of a unicast resource allocation method according to an embodiment of the present disclosure;

4a is a third schematic flowchart of a unicast resource allocation method according to an embodiment of the present disclosure;

4b is a fourth schematic flowchart of a unicast resource allocation method according to an embodiment of the present disclosure;

5a is a fifth schematic flowchart of a unicast resource allocation method according to an embodiment of the present disclosure;

5b is a sixth schematic flowchart of a unicast resource allocation method according to an embodiment of the present disclosure;

6a is a seventh schematic flowchart of a unicast resource allocation method according to an embodiment of the present disclosure;

6b is a schematic flowchart of a unicast resource allocation method according to an embodiment of the present disclosure;

7a is a ninth schematic flowchart of a unicast resource allocation method according to an embodiment of the present disclosure;

FIG. 7b is a tenth schematic flowchart of a unicast resource allocation method according to an embodiment of the present disclosure; FIG.

FIG. 8a is a eleventh schematic flowchart of a unicast resource allocation method according to an embodiment of the present disclosure;

8b is a twelfth schematic flowchart of a unicast resource allocation method according to an embodiment of the present disclosure;

8c is a thirteenth schematic flowchart of a unicast resource allocation method according to an embodiment of the present disclosure;

FIG. 8d is a fourteenth schematic flowchart of a unicast resource allocation method according to an embodiment of the present disclosure; FIG.

FIG. 9 is one of the schematic structural diagrams of a first node according to an embodiment of the present disclosure; FIG.

FIG. 10 is one of the schematic structural diagrams of a second node according to an embodiment of the present disclosure; FIG.

11 is a second schematic structural diagram of a first node according to an embodiment of the present disclosure;

12 is a second schematic structural diagram of a first node according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.

detailed description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, but not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present disclosure.

The term "comprising" and any variants thereof in the description and claims of this application are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or device containing a series of steps or units need not be limited to clear Those steps or units are listed explicitly, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or equipment. In addition, the use of "and / or" in the specification and in the claims indicates at least one of the connected objects, such as A and / or B, which means that there are three cases of A alone, B alone, and A and B.

In the embodiments of the present disclosure, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present disclosure should not be construed as more preferred or advantageous over other embodiments or designs. Rather, the use of the words "exemplary" or "for example" is intended to present the relevant concept in a concrete manner.

The following introduces the sensing process of version 14 (R14):

In Mode 4 mode, the basic mechanism for resource allocation is Sensing + Semi-Persistent Scheduling (SPS).

The basic idea is that the node knows the resource occupation of other nodes and subsequent resource occupation in real time through real-time sensing. When there is a need for resource selection or reselection, it selects a suitable idle according to the learned resource occupation. The resource is sent, once it is selected, it is continuously occupied under certain conditions, and the resource will not be changed unless the trigger condition for resource reselection is met.

The resource selection process mainly involves two windows: the sensing window and the selection window. The time relationship between these two windows is shown in Figure 1.

Step 1: Make all candidate resources in the resource selection window available;

Step 2: Resource exclusion process: get available resource set;

Here is to select the resources in the selection window, but the information obtained now is only the information in the sensing window, that is, the resource occupation in the selection window needs to be inferred based on the information in the obtained sensing window, and the selection window is further used. Resources for further screening.

Due to differences in service cycle (SPS cycle), service starting point, and SPS resource duration (SPS counter value). Information such as the number of scheduling assignments (SAs) and intervals received by other nodes within the sensing window may be different. It can be understood that the number of SAs corresponds to a Transport Block (TB), and includes an initial transmission SA and a retransmission SA.

Step 2-1: Determine a valid latest SA;

Among them, the information of the other nodes learned in the sensing window is only valid for the latest SA that reserved the resources belonging to the selection window and the resources after the selection window in time.

Step 2-2: Exclude candidate subframes corresponding to skip subframes;

Step 2-3: Determine whether a resource in the selection window needs to be excluded, and candidate resources that meet the following two conditions need to be excluded:

(1) The SA indicates that the next resource reservation will collide with the TB sent by the candidate resource or the TB sent by subsequent resources corresponding to the candidate resource;

(2) Perform physical side link sharing channel (PSSCH) -reference signal reception power (RSRP) measurement according to the decoded SA, and the measured value is higher than the RSRP threshold.

Candidate resources that meet the above two conditions need to be excluded from the resource selection window;

Step 2-4: Determine the ratio (duty cycle) of the remaining optional resources in the selection window:

Step 2-5: When the current remaining optional resource ratio is greater than or equal to 20%, the resource exclusion process ends; when the current remaining optional resource ratio is less than 20%, increase the current threshold of the receiving and sending nodes (3dB, each time (The initial value is selected as the system configuration when it is selected, and iteratively updated afterwards), and the resource reuse range is reduced to deduct resources again.

Step 3: Select the primary selection process (more than 20 resources choose the lowest 20% of the resources);

For the remaining resources that are not excluded from the resources in the selection window, perform power averaging, sort, and select the 20% resources with lower smoothing power.

Initial retransmission resource selection process when the number of transmissions is 2: Because each SA indicates the position indication of the data resource twice, that is, the data resource needs to select the initial transmission resource and the retransmission resource at the same time. Select 2 resources from the lowest 20% resources, and ensure that the interval between these two resources is within [-15,15] subframes and the interval cannot be 0. The specific selection algorithm is left to the implementation.

The channel condition information perceived by each user is different. When an existing broadcast mechanism node selects a resource, it makes certain resource selection based on the measured Sensing information. Because it is a broadcast, it only needs to start from its own perception; but for unicast, there is a certain channel interaction for large and small scale fades. Ease, but there may be large differences for co-channel interference, so at this time in order to do more accurate scheduling, each node needs to consider from the perspective of the receiving node when selecting resources. If it is still considered from its own perspective, the resource that may be selected is a resource with strong interference for the receiving node, which affects system performance.

In the implementation of the present disclosure, from the perspective of the channel, the transmitting end to the receiving end needs to experience fading and various interferences.

Among them, fading includes: slow fading (path loss and shadow fading); and fast fading (small scale);

Among them, interference includes: co-frequency interference, inter-frequency interference (IBE), and noise floor;

For fast decay, two parameters are mainly looked at: coherence time and coherence bandwidth. For coherence time, it is related to relative vehicle speed and carrier frequency. Correlation in time. If it is relatively static, there is always correlation, and the correlation time is infinite.

For fast decay, two parameters are mainly looked at: coherence time and coherence bandwidth. For coherent bandwidth, delay spread is related to channel modeling. Correlation in the frequency domain.

For road loss, it mainly depends on the change of relative distance and carrier frequency. Can be seen as the correlation of time-frequency resources.

For shadow fading, we mainly consider the coherence time, the change in the relative distance between pairs of nodes, and the scene (affecting the relevant distance). Can be seen as the correlation of time-frequency resources.

For co-channel interference, the co-channel interference of each physical resource block (PRB) changes. There is no temporal correlation, which depends on the scheduling mechanism in the frequency domain. If it is semi-persistent scheduling (Semi-Persistent Scheduling, In the case of SPS), the correlation in the frequency domain of the co-channel interference is relatively strong, and the probability of the existence of resources remains unchanged; it is related to the period of the service and the degree of topology change; if it is for dynamic scheduling (DS), Resources, there is no correlation in time.

For inter-frequency interference, that is, changes in IBE, are mainly related to changes in topology and scheduling methods.

As long as the noise floor is related to the occupied bandwidth, there is no change.

It can be seen from this that if various fading and interference are considered, there is no correlation on any PRB, including in time and frequency domain, that is, for V2X scenes, the frequency domain and time selective gain cannot be perfectly used. That is, if you want to do some channel quality feedback in advance to obtain the frequency domain or time selective gain, it is difficult.

From another perspective, because of the different perceptions, that is, specific resource selection and transmission parameter determination require certain cooperation between the sending and receiving nodes to achieve.

The two nodes A and B establish a connection. From the perspective of resource allocation, there are several implementation methods:

(1) Node A allocates resources for itself and node B, or node B allocates resources for itself and node A for B-A and A-B links;

(2) Node A selects resources for A-B's link for itself; Node B selects resources for B-A's link for itself. Here, selecting resources includes selecting resources and determining specific transmission parameters.

(3) Node A selects resources for the links of AB for itself; Node B selects resources for the links of BA for itself. The selection of resources here is only the selection of resources. The specific transmission parameters can be determined through node feedback, or Only one initial lower transmission parameter is determined (Modulation and Coding Scheme (MCS) level is relatively low, etc.), and the node makes corresponding feedback according to the reception characteristics.

(4) Node A selects resources for Node B for the link of B-A, and Node B selects resources for Node A for the link of A-B.

It should be noted that, for the time being, the situation in which the dominant node allocates resources is not considered, and only A chooses resources for himself or for the other party;

According to the previous analysis, the link performance of B-A and the specific interference situation can only be correctly sensed by node A, which does not have complete link reciprocity. The link performance of A-B is the same.

However, any feedback will have the following problems: 1) There is a certain delay in time, and the channel conditions may change within the corresponding time: 2) The signaling overhead and the probability of signaling reception failure. 3) The peer nodes do not know each other's service related information, that is, the timing of transmission.

Referring to FIG. 2, an architecture of a wireless communication system according to an embodiment of the present disclosure. As shown in FIG. 2, the wireless communication system may include a first node 20 and a second node 21, and the first node 20 may communicate with the second node 21. In practical applications, the connection between the foregoing devices may be a wireless connection. In order to conveniently and intuitively represent the connection relationship between the various devices, a solid line is used in FIG. 2 for illustration.

The first node 20 and the second node 21 provided in the embodiment of the present disclosure may be a mobile phone, a tablet computer, a notebook computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, or a Personal Digital Assistant (PDA). ), Mobile Internet device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted equipment, etc.

Referring to FIG. 3a, an embodiment of the present disclosure provides a unicast resource allocation method. The execution body of the method is the first node. The specific steps are as follows. The method may start from step 311 or step 312:

Step 311: Receive information about the first unicast resource from the second node.

In the embodiment of the present disclosure, before receiving the information of the first unicast resource from the second node, the first node sends the service-related information of the first node to the second node.

The first unicast resource and corresponding transmission parameters are determined by the second node for the first node according to the sensing information of the second node and service-related information of the first node.

Step 312: Determine a second unicast resource of the first node, and adjust subsequent transmission parameters corresponding to the second unicast resource according to related information fed back by the second node;

Referring to FIG. 3b, an embodiment of the present disclosure provides a unicast resource allocation method. The method is executed by a second node. The specific steps are as follows. The method may start from step 321 or step 324:

Step 321: Receive service-related information of the first node from the first node, and then execute step 322;

Step 322: Determine the first unicast resource of the first node and the corresponding transmission parameters according to the sensing information of the second node and the service-related information of the first node, and then execute step 323;

Step 323: Send the information of the first unicast resource to the first node.

Step 324: feedback related information to the first node;

In the embodiment of the present disclosure, the related information is used to determine a transmission parameter corresponding to the second unicast resource of the first node.

In the embodiment of the present disclosure, the first node receives information of the first unicast resource from the second node, and the first unicast resource and the corresponding transmission parameter are determined by the second node based on the sensing information of the second node and the first node. The service-related information is determined by the first node; or the first node determines the second unicast resource of the first node, and adjusts the subsequent transmission parameters corresponding to the second unicast resource according to the related information fed back by the second node to achieve Unicast communication between UEs.

Referring to FIG. 4a, with respect to step 311 in FIG. 3a, an embodiment of the present disclosure provides a unicast resource allocation method. The execution body of the method is a first node. The specific steps are as follows:

Step 411: Send service-related information of the first node to the second node;

When the second node allocates resources and corresponding transmission parameters for the first node, it is necessary to consider the following factors: service-related information of the first node, and perception information of the second node. Further, it may also consider accepting the services of the first node. Status of relevant control information.

Step 412: Receive the information of the first unicast resource from the second node.

Referring to FIG. 4b, for steps 321 to 323 in FIG. 3b, an embodiment of the present disclosure provides a unicast resource allocation method. The execution body of the method is a second node. The specific steps are as follows:

Step 421: Receive service-related information of the first node from the first node;

Step 422: Determine a first unicast resource of the first node according to the sensing information of the second node and service-related information of the first node;

Step 423: Send the information of the first unicast resource to the first node.

Step 424: Receive the control information of the first node from the first node.

Step 425: Select transmission parameters for the first node according to the information perceived by the second node and the reception situation;

Step 426: Send the transmission parameter to the first node.

The following description is made with reference to a specific example, in which a first node is referred to as an A node and a second node is referred to as a B node.

Example 1: In the case of Semi-Persistent Scheduling (SPS), node A and node B select resources for each other for each other.

Node A informs Node B of the service-related information through control signaling. Node B selects resources for Node A based on its sensing information and related service information of Node A, including Modulation and Coding Scheme. MCS) and other transmission parameters, and inform A node. For node A, when business information changes, node B needs to be informed. When the receiving condition of the node B on the corresponding resource changes greatly, such as when it becomes worse, it needs to adjust the resources and tell the node A.

Because each other selects resources for each other, that is, they know each other's sending resources, so there is no problem of half-duplex between unicast nodes.

Further, when the node B selects transmission parameters for the node A, in addition to considering related sensing information, it may also refer to the receiving situation of the node A control information.

For DS, that is, if the service is not stable, the control overhead is too large, and this method should not be adopted.

In the embodiment of the present disclosure, the first node and the second node select resources for each other, thereby implementing unicast communication between UEs.

Referring to FIG. 5a, with respect to step 312 in FIG. 3, an embodiment of the present disclosure provides another unicast resource allocation method. The execution body of the method is the first node. The specific steps are as follows:

Step 511: Determine a second unicast resource of the first node.

Step 512: Send the first reference signal to the second node.

In the embodiment of the present disclosure, the first reference signal is sent to the second node through the control channel, and the second unicast resource of the first node and the position of the first reference signal have a corresponding mapping relationship.

Step 513: Receive the CQI information of the first reference signal from the second node.

Step 514: Determine the transmission parameter corresponding to the second unicast resource of the first node according to the CQI information.

Referring to FIG. 5b, with respect to step 324 in FIG. 3b, an embodiment of the present disclosure provides a unicast resource allocation method. The method is executed by a second node. The specific steps are as follows:

Step 521: Receive a first reference signal from a first node.

In the embodiment of the present disclosure, the location of the second unicast resource of the first node and the first reference signal has a corresponding mapping relationship.

It should be noted that, in terms of time, the reference signal is m milliseconds ahead of the second unicast resource, and m should be within the category of channel correlation.

Step 522: Send the CQI information of the first reference signal to the first node.

Example 2: Direct communication physical control channel (PSCCH) / PSSCH Frequency-Division Multiplexing (FDM) mode. In the SPS / DS mode, node A selects only resource information and node B assists Selection of corresponding transmission parameters.

The relationship between the resource reference signal and the selected SPS resource in the system is corresponding. For example, m milliseconds in advance, where m takes into account the correlation.

After node A selects the resource, it does not send SA, but sends reference information through control information. Node B immediately sends CQI feedback after receiving the reference signal, and then node A makes the MCS decision of the resource based on the CQI information.

If the channel condition is relatively poor, node A can also make resource selection again.

Because the time is relatively short, the change of slow fading can be ignored; because the position of the SPS resource and the RS signal are corresponding, that is, the CQI can reflect various types of interference.

A similar method can also be adopted for DSs. The resources correspond to the positions of the reference signals. However, for DSs, the signaling overhead is greater.

In the embodiment of the present disclosure, in the PSCCH / PSSCH FDM mode and the SPS / DS mode, the first node selects only resource information, and the second node assists in the selection of corresponding transmission parameters, thereby achieving unicast communication between UEs.

Referring to FIG. 6a, with respect to step 312 in FIG. 3, an embodiment of the present disclosure provides another unicast resource allocation method. The execution body of the method is the first node. The specific steps are as follows:

Step 611: Receive the first feedback information from the second node.

In the embodiment of the present disclosure, the first feedback information is used to indicate at least one of the following: an acknowledgement ACK from the second node, a non-acknowledgement NACK from the second node, a signal-to-noise ratio SNR of the second node, and a reception of the second node power.

Step 612: Adjust subsequent transmission parameters corresponding to the second unicast resource of the first node according to the first feedback information.

Referring to FIG. 6b, with respect to step 324 in FIG. 3b, an embodiment of the present disclosure provides a unicast resource allocation method. The method is executed by a second node. The specific steps are as follows:

Step 621: Send the first feedback information to the first node.

Example 3: PSCCH / PSSCH (Frequency-division multiplexing, FDM) mode. In DS mode, node A selects resources for itself, node B feeds back corresponding information, and assists node A to adjust transmission parameters.

After node A selects resources for itself, it transmits according to the lower MCS. In addition to the acknowledgement / non-acknowledgement (ACK / NACK), node B also needs to make corresponding feedback on the SNR and received power. After receiving the corresponding information, node A makes corresponding resource adjustments for the next resource transmission.

Considering that the interference information is changing, the adjustment here is only a rough adjustment.

In the embodiment of the present disclosure, in the PSCCH / PSSCH FDM mode and the DS mode, the first node selects resources for itself, and the second node feeds back corresponding information to assist the first node to adjust transmission parameters, thereby achieving unicast communication between UEs.

Referring to FIG. 7a, with respect to step 312 in FIG. 3a, an embodiment of the present disclosure provides another unicast resource allocation method. The execution body of the method is the first node. The specific steps are as follows:

Step 711: Determine a second unicast resource of the first node.

Step 712: Send SA to the second node;

Step 713: Receive transmission parameters from the second node.

In the embodiment of the present disclosure, the transmission parameter is selected by the second node for the first node according to the SA and the information sensed by the second node.

It should be noted that, when the first node does not receive the transmission parameter, the PSCCH of the through communication physical control channel is sent again.

Referring to FIG. 7b, with respect to step 324 in FIG. 3b, an embodiment of the present disclosure provides another unicast resource allocation method. The execution body of the method is a second node. The specific steps are as follows:

Step 721: Receive SA from the first node;

Step 722: Select and determine transmission parameters for the first node according to the information sensed by the SA and the second node.

Step 723: Send the transmission parameter to the first node.

Example 4: PSCCH / PSSCH TDM mode. In the SPS mode, node A only selects resource information, and node B assists the selection of corresponding transmission parameters.

After node A selects resources, it sends SA through control information. After node B receives, according to the received node information and sensing information, it selects the corresponding transmission parameters for node B for node A to select transmission parameters, and node A uses the feedback transmission parameters. Send resources, and Node B decodes the resources according to the corresponding transmission parameters.

Node B can learn some information about slow decay from the information received by node A. If PSCCH / PSSCH is within a certain time range, the effects of slow decay can be regarded as similar. In the SPS mode, the impact of PSSCH co-channel interference is similar. If the node A does not receive the feedback from the node B, it considers that the transmission has failed and needs to re-send the PSCCH.

In the embodiment of the present disclosure, in the PSCCH / PSSCH TDM mode and the SPS mode, the node A only selects resource information, and the node B assists the selection of corresponding transmission parameters, and implements unicast communication between UEs.

Referring to FIG. 8a, with respect to step 312 in FIG. 3a, an embodiment of the present disclosure provides another unicast resource allocation method. The execution body of the method is the first node. The specific steps are as follows:

Step 811: Determine a second unicast resource of the first node.

Step 812: Send a second reference signal to the second node.

Step 813: Receive second feedback information on the slow decay feedback from the second node.

Step 814: Adjust the second unicast resource of the first node according to the second feedback information.

Referring to FIG. 8b, with respect to step 324 in FIG. 3b, an embodiment of the present disclosure provides another unicast resource allocation method. The execution body of the method is a second node. The specific steps are as follows:

Step 821: Receive a second reference signal from the first node.

Step 822: Send the second feedback information on the slow decay feedback to the first node.

For slow decay, the first node sends the second reference signal m milliseconds before sending the service, and the second node makes rapid feedback after receiving.

Referring to FIG. 8c, with respect to step 312 in FIG. 3a, an embodiment of the present disclosure provides another unicast resource allocation method. The method is executed by a first node. The specific steps are as follows:

Step 831: Receive third feedback information on co-frequency, inter-frequency, or noise floor feedback from the second node.

In the embodiment of the present disclosure, the third feedback information is used to indicate the channel interference situation of the second node, or the third feedback information is used to indicate the received signal strength indication of the second node.

Step 832: Adjust subsequent transmission parameters corresponding to the second unicast resource according to the third feedback information.

Referring to FIG. 8d, with respect to step 324 in FIG. 3b, an embodiment of the present disclosure provides another method for unicast resource allocation. The execution body of the method is a second node. The specific steps are as follows:

Step 841: Send the third feedback information on the same frequency, inter-frequency, or noise floor feedback to the first node.

In the embodiment of the present disclosure, the second feedback information is used to indicate a channel interference situation, or the second feedback information is used to instruct a second node to receive a reference signal sent by the first node, where the reference signal is sent by the first node Sent before business.

Example 5: In the SPS mode, node A selects resources, and node B assists in the selection of corresponding resources and the selection of transmission parameters.

Node B has been doing the sensing process. Node B's feedback on the channel is divided into two parts, one is feedback on co-channel interference, and the other is the characterization of slow fading.

For the feedback of co-frequency / inter-frequency / bottom noise feedback, feedback the interference situation on some channels through the feedback control channel, or according to their received Signal Strength Indication (RSSI) information for some less interference channels Direct feedback, similar to CQI feedback, directly feedback the corresponding RSSI information.

For slow fading, the RS reference signal is sent m milliseconds before the service is transmitted, given the transmission characteristics of the counterpart service. Without knowing the characteristics of the other party's sending service, it is necessary for node A to send an RS signal before sending the service, and receiving node B to make rapid feedback.

Node A selects the appropriate resource and MCS mechanism based on the acquired slow decay and combined with the sensing feedback. Specifically, the CQI feedback information of each physical resource block (PRB) / PRB set is obtained according to the RS information, and several better PRB / PRB sets are selected, then combined with the RSSI information, and then the corresponding correspondence is selected. Resources and MCS.

In the embodiment of the present disclosure, in the SPS mode, node A selects resources, and node B assists in the selection of the corresponding resources and the selection of transmission parameters, thereby achieving unicast communication between UEs.

Referring to FIG. 9, an embodiment of the present disclosure provides a first node 900, including: a first transceiver 901 and a first processor 902;

The first transceiver 901 is configured to receive information about a first unicast resource from a second node. The first unicast resource and corresponding transmission parameters are determined by the second node according to the second node. The perceptual information and service-related information of the first node are determined by the first node;

The first processor 902 is configured to determine a second unicast resource of the first node, and adjust subsequent transmission parameters corresponding to the second unicast resource according to related information fed back by the second node.

Optionally, the first transceiver 901 is further configured to send service-related information of the first node to a second node.

Optionally, the first transceiver 901 is further configured to send a first reference signal to the second node;

The first transceiver 901 is further configured to receive channel quality indication CQI information of the first reference signal from the second node;

The first processor 902 is further configured to determine a transmission parameter corresponding to a second unicast resource of the first node according to the CQI information.

Optionally, the first transceiver 901 is further configured to send the first reference signal to the second node through a control channel.

Optionally, the first transceiver 901 is further configured to send a second unicast resource according to a preset MSC, where the preset MCS is lower than a preset value, for example, the preset value is QPSK modulation, which is not high. Order modulation; receiving first feedback information from the second node, wherein the first feedback information is used to indicate at least one of: a acknowledgment response ACK from the second node, and a non-acknowledgement response NACK from the second node , The SNR of the second node, and the received power of the second node;

The first processor 902 is further configured to adjust subsequent transmission parameters corresponding to the second unicast resource of the first node according to the first feedback information.

Optionally, the first transceiver 901 is further configured to send a scheduling and allocation SA to the second node on the PSCCH, where the SA does not include MCS transmission parameters of the corresponding resources, and only the location parameters;

The first transceiver 901 is further configured to receive a transmission parameter from the second node, where the transmission parameter is the first node according to the SA and the information sensed by the second node is the first node. Node selection.

Optionally, the first transceiver 901 is further configured to, when the first node does not receive the transmission parameter, re-send the direct communication physical control channel PSCCH.

Optionally, the first transceiver 901 is further configured to send a second reference signal to the second node;

The first transceiver 901 is further configured to receive second feedback information from the second node;

The first processor 902 is further configured to adjust a second unicast resource of the first node according to the second feedback information.

Optionally, the first transceiver 901 is further configured to receive third feedback information on co-frequency, inter-frequency, or noise floor feedback from the second node;

The first processor 902 is further configured to adjust subsequent transmission parameters corresponding to the second unicast resource according to the third feedback information.

Referring to FIG. 10, an embodiment of the present disclosure provides a second node 1000, including: a second transceiver 1001 and a second processor 902;

The second transceiver 1001 is configured to receive service-related information of the first node from a first node;

The second processor 1002 is configured to determine a first unicast resource and a corresponding transmission parameter of the first node according to the sensing information of the second node and service-related information of the first node;

The second transceiver 1001 is further configured to send information of the first unicast resource to the first node;

The second transceiver 1001 is further configured to feed back related information to the first node, where the related information is used to determine a transmission parameter corresponding to the second unicast resource of the first node.

Optionally, the second transceiver 1001 is further configured to receive, from a first node, a reception situation of control information of the first node;

The second processor 1002 is further configured to select a transmission parameter for the first node according to the information perceived by the second node and the reception situation;

The second transceiver 1001 is further configured to send the transmission parameter to the first node.

Optionally, the second transceiver 1001 is further configured to receive a first reference signal from the first node;

The second transceiver 1001 is further configured to send the channel quality indication CQI information of the first reference signal to the first node.

Optionally, the second transceiver 1001 is further configured to send first feedback information to the first node, where the first feedback information is used to indicate at least one of the following: a confirmation response from the second node An ACK, a non-acknowledgment response of the second node NACK the signal-to-noise ratio SNR of the second node, and the received power of the second node.

Optionally, the second transceiver 1001 is further configured to receive a scheduling and allocation SA from the first node; the second processor is further configured to be based on the SA and information perceived by the second node Determining transmission parameters for the first selection;

Optionally, the second transceiver 1001 is further configured to receive a second reference signal from the first node;

The second transceiver 1001 is further configured to send second feedback information about the slow decay feedback to the first node. For slow decay, the first node sends the second reference signal m milliseconds before sending the service, and the second node performs rapid feedback after receiving.

Optionally, the second transceiver 1001 is further configured to send, to the first node, third feedback information on co-frequency, inter-frequency, or noise floor feedback.

Referring to FIG. 11, an embodiment of the present disclosure provides a first node 1100, including:

A first receiving module 1101, configured to receive information about a first unicast resource from a second node, where the first unicast resource and corresponding transmission parameters are determined by the second node according to the sensing information of the second node, And service-related information of the first node is determined by the first node;

A first determining module 1102 is configured to determine a second unicast resource of the first node, and determine a transmission parameter corresponding to the second unicast resource according to related information fed back by the second node.

Optionally, the first node 1100 further includes: a second sending module 1103, configured to send service-related information of the first node to the second node.

Optionally, the second sending module 1103 is further configured to send a first reference signal to the second node; receive channel quality indication CQI information of the first reference signal from the second node;

The first node further includes: an adjustment module 1104, configured to determine a transmission parameter corresponding to a second unicast resource of the first node according to the CQI information.

Optionally, the second sending module 1103 is further configured to send the first reference signal to the second node through a control channel.

Optionally, the first receiving module 1101 is further configured to send a second unicast resource according to a preset MSC, where the preset MCS is lower than a preset value, for example, the preset value is QPSK modulation, which is not high. Order modulation; receiving first feedback information from the second node, where the first feedback information is used to indicate a signal-to-noise ratio SNR and / or received power of the second node;

The adjustment module 1104 is further configured to adjust subsequent transmission parameters corresponding to the second unicast resource of the first node according to the first feedback information.

Optionally, the second sending module 1103 is further configured to send a scheduling allocation SA to the second node on the PSCCH; the SA does not include the MCS transmission parameters of the corresponding resources, but only the location parameters.

The first receiving module 1101 is further configured to receive a transmission parameter from the second node, where the transmission parameter is the first node according to the SA and the information sensed by the second node is the first node. Node selection.

Optionally, the second sending module 1103 is further configured to send a second reference signal to the second node;

The first receiving module 1101 is further configured to receive second feedback information on slow decay feedback from the second node; for slow decay, the first node sends the second reference signal m milliseconds before sending a service, After the second node receives it, it makes quick feedback.

The adjustment module 1104 is further configured to adjust a second unicast resource of the first node according to the second feedback information.

Optionally, the first receiving module 1101 is further configured to receive third feedback information on co-frequency, inter-frequency, or noise floor feedback from the second node;

The adjustment module 1104 is further configured to adjust subsequent transmission parameters corresponding to the second unicast resource according to the third feedback information.

Referring to FIG. 12, an embodiment of the present disclosure provides a second node 1200, including:

A second receiving module 1201, configured to receive service-related information of the first node from a first node;

A second determining module 1202, configured to determine a first unicast resource and a corresponding transmission parameter of the first node according to the sensing information of the second node and service-related information of the first node; and A sending module, configured to send the information of the first unicast resource to the first node;

The feedback module 1203 is configured to feed back related information to the first node, where the related information is used to determine a transmission parameter corresponding to the second unicast resource of the first node.

Optionally, the feedback module 1203 is further configured to receive, from a first node, the reception status of the control information of the first node; and based on the information sensed by the second node and the reception status, it is the first The node selects a transmission parameter; the first sending module is further configured to send the transmission parameter to the first node.

Optionally, the feedback module 1203 is further configured to receive a first reference signal from the first node; and send channel quality indication CQI information of the first reference signal to the first node.

Optionally, the feedback module 1203 is further configured to send first feedback information to the first node, where the first feedback information is used to indicate at least one of the following: an acknowledgement ACK of the second node, The non-acknowledgment response of the second node NACKs the signal-to-noise ratio SNR of the second node, and the received power of the second node.

Optionally, the feedback module 1203 is further configured to receive a scheduling assignment SA from the first node; determine a transmission parameter for the first selection according to the SA and information sensed by the second node; The first node sends the transmission parameter.

Optionally, the feedback module 1203 is further configured to receive a second reference signal from the first node; and send the second feedback information about the slow decay feedback to the first node. For the slow decay, the first node The second reference signal is sent m milliseconds before the service is sent, and the second node performs rapid feedback after receiving.

Optionally, the feedback module 1203 is further configured to send the third node feedback information on the same frequency, different frequency, or noise floor to the first node.

Referring to FIG. 13, an embodiment of the present disclosure provides another user equipment 1300 including at least one processor 1301, a memory 1302, a user interface 1303, and at least one network interface 1304. The various components in the user equipment 1300 are coupled together through a bus system 1305.

It can be understood that the bus system 1305 is configured to implement connection and communication between these components. The bus system 1305 includes a power bus, a control bus, and a status signal bus in addition to a data bus. However, for the sake of clarity, various buses are marked as the bus system 1305 in FIG. 13.

The user interface 1303 may include a display, a keyboard, or a pointing device (for example, a mouse, a trackball, a touch panel, or a touch screen, etc.).

It can be understood that the memory 1302 in the embodiment of the present disclosure may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an electronic memory. Erase programmable read-only memory (EPROM, EEPROM) or flash memory. The volatile memory may be Random Access Memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synch Link DRAM, SLDRAM ) And direct memory bus random access memory (Direct Rambus RAM, DRRAM). The memory 1302 described in embodiments of the present disclosure is intended to include, but is not limited to, these and any other suitable types of memory.

In some implementations, the memory 1302 stores the following elements, executable modules or data structures, or a subset of them, or their extended set: an operating system 13021 and an application program 13022.

The operating system 13021 includes various system programs, such as a framework layer, a core library layer, and a driver layer, etc., and is used to implement various basic services and process hardware-based tasks. The application program 13022 includes various application programs, such as a media player and a browser, and is used to implement various application services. A program for implementing the method of the embodiment of the present disclosure may be included in the application program 13022.

In the embodiment of the present disclosure, the user equipment 1300 may further include a program stored in the memory 1302 and executable on the processor 1301. When the program is executed by the processor 1301, the steps of the method provided by the embodiment of the present disclosure are implemented.

The method disclosed in the foregoing embodiments of the present disclosure may be applied to the processor 1301, or implemented by the processor 1301. The processor 1301 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1301 or an instruction in the form of software. The above processor 1301 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA), or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present disclosure may be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present disclosure may be directly embodied as being executed by a hardware decoding processor, or may be executed and completed by using a combination of hardware and software modules in the decoding processor. The software module may be located in a mature computer-readable storage medium, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, and the like. The computer-readable storage medium is located in the memory 1302, and the processor 1301 reads the information in the memory 1302 and completes the steps of the above method in combination with its hardware. Specifically, a program is stored on the computer-readable storage medium.

The steps of the method or algorithm described in connection with the present disclosure may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions. The software instructions may be composed of corresponding software modules, and the software modules may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, mobile hard disk, read-only optical disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be an integral part of the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC can be located in a core network interface device. Of course, the processor and the storage medium can also exist as discrete components in the core network interface device.

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

The specific implementation manners described above further describe the objectives, technical solutions, and beneficial effects of the present disclosure in detail. It should be understood that the foregoing descriptions are merely specific implementation manners of the disclosure, and are not intended to limit the present disclosure. The scope of protection, any modification, equivalent replacement, and improvement made on the basis of the technical solution of this disclosure shall be included in the scope of protection of this disclosure.

Those skilled in the art should understand that the embodiments of the present disclosure may be provided as a method, a system, or a computer program product. Therefore, the embodiments of the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present disclosure may take the form of a program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

Embodiments of the present disclosure are described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowcharts and / or block diagrams, and combinations of processes and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine, so that the instructions generated by the processor of the computer or other programmable data processing device are used to generate instructions Means for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to work in a particular manner such that the instructions stored in the computer-readable memory produce a manufactured article including an instruction device, the instructions The device implements the functions specified in one or more flowcharts and / or one or more blocks of the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing device, so that a series of steps can be performed on the computer or other programmable device to produce a computer-implemented process, which can be executed on the computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more flowcharts and / or one or more blocks of the block diagrams.

Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present disclosure without departing from the scope of the present disclosure. In this way, if these modifications and variations of the embodiments of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure also intends to include these changes and variations.

Claims

A unicast resource allocation method applied to a first node, wherein the method includes:

Receiving information of a first unicast resource from a second node, where the first unicast resource and corresponding transmission parameters are determined by the second node according to the sensing information of the second node and the service of the first node The relevant information is determined by the first node; or

Determining a second unicast resource of the first node, and adjusting subsequent transmission parameters corresponding to the second unicast resource according to related information fed back by the second node.
The method according to claim 1, wherein before the receiving the information of the first unicast resource from the second node, the method further comprises:

Sending service-related information of the first node to a second node.
The method according to claim 1, wherein determining the transmission parameter corresponding to the second unicast resource according to the related information fed back by the second node comprises:

Sending a first reference signal to the second node;

Receiving channel quality indication CQI information of the first reference signal from the second node;

Determining transmission parameters corresponding to the second unicast resource of the first node according to the CQI information.
The method according to claim 3, wherein the sending a first reference signal to the second node comprises:

Sending the first reference signal to the second node through a control channel.
The method according to claim 3, wherein the second unicast resource of the first node and the position of the first reference signal have a corresponding mapping relationship.
The method according to claim 1, wherein adjusting subsequent transmission parameters corresponding to the second unicast resource according to the related information fed back by the second node comprises:

The MSC sends the second unicast resource according to a preset modulation and coding strategy, where the preset MCS is lower than a preset value;

Receiving first feedback information from the second node, where the first feedback information is used to indicate at least one of: a acknowledgment response ACK from the second node, a non-acknowledgement response NACK from the second node, The SNR of the second node and the received power of the second node;

Adjusting subsequent transmission parameters corresponding to the second unicast resource of the first node according to the first feedback information.
The method according to claim 1, wherein determining the transmission parameter corresponding to the second unicast resource according to the related information fed back by the second node comprises:

Sending a scheduling assignment SA to the second node on the physical-side link control channel PSCCH;

Receiving a transmission parameter from the second node, the transmission parameter being selected by the second node for the first node based on the SA and information sensed by the second node.
The method according to claim 7, further comprising:

When the first node does not receive the transmission parameter, the PSCCH of the through communication physical control channel is sent again.
The method according to claim 1, wherein determining the transmission parameter corresponding to the second unicast resource according to the related information fed back by the second node comprises:

Sending a second reference signal to the second node;

Receiving second feedback information for slow decay feedback from the second node;

Adjusting the second unicast resource of the first node according to the second feedback information.
The method according to claim 1, wherein determining the transmission parameter corresponding to the second unicast resource according to the related information fed back by the second node comprises:

Receiving third feedback information about co-frequency, inter-frequency, or noise floor feedback from the second node;

Adjusting subsequent transmission parameters corresponding to the second unicast resource according to the third feedback information.
The method according to claim 10, wherein the third feedback information is used to indicate a channel interference situation of the second node, or the third feedback information is used to indicate a received signal of the second node Intensity indication.
A unicast resource allocation method applied to a second node, wherein the method includes:

Receiving service-related information from the first node from the first node;

Determining a first unicast resource of the first node and corresponding transmission parameters according to the sensing information of the second node and service-related information of the first node; and

Sending the information of the first unicast resource to the first node; or

Related information is fed back to the first node, and the related information is used to determine or adjust transmission parameters corresponding to the second unicast resource of the first node.
The method according to claim 12, further comprising:

Receiving the control information of the first node from a first node;

Selecting transmission parameters for the first node according to the information perceived by the second node and the reception situation;

Sending the transmission parameter to the first node.
The method according to claim 12, wherein the feeding back relevant information to the first node comprises:

Receiving a first reference signal from the first node;

Sending the channel quality indication CQI information of the first reference signal to the first node.
The method according to claim 14, wherein the second unicast resource of the first node and the position of the first reference signal have a corresponding mapping relationship.
The method according to claim 12, wherein the feeding back relevant information to the first node comprises:

Send first feedback information to the first node, where the first feedback information is used to indicate at least one of: an acknowledgement ACK of the second node, a non-acknowledgement response NACK of the second node The SNR of the two nodes and the received power of the second node.
The method according to claim 12, wherein the feeding back relevant information to the first node comprises:

Receiving a scheduling assignment SA from the first node;

Determining a transmission parameter for the first selection according to the SA and the information sensed by the second node;

Sending the transmission parameter to the first node.
The method according to claim 12, wherein feeding back related information to the first node comprises:

Receiving a second reference signal from the first node;

Sending second feedback information about the slow decay feedback to the first node.
The method according to claim 12, wherein feeding back related information to the first node comprises:

And sending third feedback information about the same frequency, different frequency, or noise floor feedback to the first node.
The method according to claim 19, wherein the third feedback information is used to indicate a channel interference condition of the second node, or the third feedback information is used to indicate a received signal of the second node Intensity indication.
A first node includes a first transceiver and a first processor, where:

The first transceiver is configured to receive information of a first unicast resource from a second node, and the first unicast resource and corresponding transmission parameters are determined by the second node according to the sensing information of the second node And the service-related information of the first node is determined by the first node;

The first processor is configured to determine a second unicast resource of the first node, and determine a transmission parameter corresponding to the second unicast resource according to related information fed back by the second node.
A second node includes: a second transceiver and a second processor, where:

The second transceiver is configured to receive service-related information of the first node from a first node;

The second processor is configured to determine a first unicast resource of the first node and corresponding transmission parameters according to the sensing information of the second node and service-related information of the first node;

The second transceiver is further configured to send information of the first unicast resource to the first node;

The second transceiver is further configured to feed back related information to the first node, where the related information is used to determine a transmission parameter corresponding to the second unicast resource of the first node.
A first node includes:

A first receiving module, configured to receive information of a first unicast resource from a second node, where the first unicast resource and corresponding transmission parameters are determined by the second node according to the sensing information of the second node, and Service-related information of the first node is determined by the first node;

A first determining module is configured to determine a second unicast resource of the first node, and determine a transmission parameter corresponding to the second unicast resource according to related information fed back by the second node.
A second node includes:

A second receiving module, configured to receive service-related information of the first node from a first node;

A second determining module, configured to determine a first unicast resource of the first node and corresponding transmission parameters according to the sensing information of the second node and service-related information of the first node; and

A first sending module, configured to send information of the first unicast resource to the first node;

The feedback module is configured to feed back related information to the first node, where the related information is used to determine a transmission parameter corresponding to the second unicast resource of the first node.
A user equipment includes a processor, a memory, and a program stored on the memory and executable on the processor, wherein when the program is executed by the processor, the program is implemented as claimed in claims 1 to 11. Steps of the unicast resource allocation method according to any one; or, steps of implementing the unicast resource allocation method according to any one of claims 12 to 20.
A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the unicast resource allocation according to any one of claims 1 to 11 is implemented Steps of the method; or, steps of implementing the unicast resource allocation method according to any one of claims 12 to 20.