WO2017036298A1

WO2017036298A1 - Method and device for transmitting resource collision information

Info

Publication number: WO2017036298A1
Application number: PCT/CN2016/094971
Authority: WO
Inventors: 冯媛; 房家奕; 周海军; 唐纪晔; 林琳
Original assignee: 电信科学技术研究院
Priority date: 2015-08-31
Filing date: 2016-08-12
Publication date: 2017-03-09
Also published as: CN106488501A; CN106488501B

Abstract

Disclosed are a method and device for transmitting resource collision information, which are used for avoiding the case where a node having not been subjected to resource collision releases a resource, thus reducing the frequency of a node re-selecting a resource, and improving system performance. The method for transmitting resource collision information provided in the present application comprises: when resource collision is detected, determining identification information about a node which has been subjected to the resource collision; and reporting resource collision information to a management station, which comprises the resource to which the collision has happened and identification information about the node to which the collision has happened to the resource, wherein the resource is a time slot or a time-frequency block.

Description

Resource collision information transmission method and device

The present application claims priority to Chinese Patent Application No. 201510549291.4, filed on Aug. 31, 2015, entitled "A Method and Apparatus for Transmission of Resource Collision Information", the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present application relates to the field of communications technologies, and in particular, to a resource collision information transmission method and apparatus.

Background technique

In the existing cellular auxiliary collision detection mechanism, it is impossible to determine the node that actually collides, which will cause frequent time slot reselection process of the node and reduce system performance.

A base station-assisted implicit reservation resource allocation algorithm in the prior art includes: a resource competition method, where a user equipment (UE) needs to listen to a channel for a period before transmitting a signal for the first time, if a certain period is found The logical resources are not used by other UEs, and can be used for the same logical resource location in the next cycle. Once the competition is successful, the same logical resource is used to send information in each subsequent cycle.

The resource conflict detection and alarm scheme includes: even if the above-mentioned resource competition scheme is adopted, since the vehicle is mobile, even if the two UEs that originally use the same logical resource do not affect each other, the movement of the vehicle may affect each other.

solution:

Puncturing in a Resource Block (RB) for listening. Since there are 2 RBs of the 11 RBs sent out by each UE here, there is no problem even if 1 RB is randomly used for listening.

Due to the hidden node problem, a collision detection mechanism needs to be introduced.

Listened by the base station or other UEs. If there is energy on a certain logical resource but cannot be solved, an alert signal is sent. It is recommended that the reminder signal be sent on a special frame. The special frame is divided into an uplink slot and a downlink slot. A fixed one-to-one mapping is established between the device-to-device (D2D) logical resources and the resources in the special frame. If a certain UE finds that a certain D2D logical resource conflicts (the energy is high but cannot be decoded), a conflict alarm signal may be sent on the corresponding uplink conflict alarm resource (Resource Element, RE), and the timing of the conflict alarm signal is advanced ( Timing Advance, TA) determines, according to the received signal power of the evolved NodeB (eNB), that the transmit power is inversely proportional to the signal power of the received eNB. The eNB can then determine whether the logical resource has a collision according to the received power on each of the conflicting alarm resources, and how many UEs are affected by the collision.

Then, the eNB can determine which block of the logical resource needs to be resolved according to the received conflict alarm signal, and then make an indication in the downlink subframe of the special frame.

However, in the above collision detection method, if the distributed node itself is solved by interaction, a certain resource on the D2D link is required, which has a certain influence on the system capacity. If the base station assists the determination, in the case that the base station has no a priori information to the node, only the correspondence between the collision time slot and the resource on the device to network (D2N) link can be determined only when the collision occurs. Gap, it is impossible to determine the node that actually collided from the time slot in which all multiplexing occurs. In this way, for the time slot in which the collision occurs, all the nodes that hear the base station broadcasting the collision information may hear the information and release the original time slot resource for reselection. For a node that does not have a collision, it is equivalent to a false collision. This causes the nodes to frequently reselect slots, which reduces the performance of the system.

Summary of the invention

The embodiment of the present application provides a resource collision information transmission method and device, so as to avoid a situation in which a node that does not have a resource collision releases resources, thereby reducing the frequency of the node reselecting resources and improving the performance of the system.

A resource collision information transmission method provided by an embodiment of the present application includes:

When a resource collision is detected, determining identification information of a node where the resource collision occurs;

The resource collision information is reported to the management station, where the resource in which the collision occurs and the identification information of the node that collides on the resource; wherein the resource is a time slot or a time-frequency block.

According to the method, when a collision occurs on a certain resource, the identification information of the node that collides with the resource is determined; wherein the resource is a time slot or a time-frequency block; and the resource collision information is reported to the management station, including occurrence The resource of the collision and the identification information of the node that collides on the resource, so that after the node determines that a collision occurs on the resource, the node sends the identity (ID) information of the node that the node successfully successfully decoded on the resource. And forwarding the information through the management station, so that the node that has the resource collision can recognize the information, and then only the node that actually collides with the resource needs to release the resource and perform resource reselection, thereby avoiding the situation that the node that does not have the resource collision releases the resource. , thereby reducing the frequency of node reselection of resources and improving the performance of the entire system.

Optionally, detect if any of the resources collide by:

For any resource, it is determined whether the resource has a resource collision by the signal to interference and noise ratio SINR and the total received power; or, by the interference power, it is determined whether the resource has a resource collision.

Optionally, the identifier information of the node where the resource collision occurs is determined, specifically:

Determining a resource in the specific frame before the current frame that is the same as the resource number of the collision, and obtaining the identification information of the node occupying the resource by correctly decoding the resource in the specific frame, and using the identifier information of the node as the current frame. Identification information of the node where the resource collides.

Optionally, the specific frame is a previous frame of the current frame.

Receiving resource collision information sent by the management station;

Determining, by the resource collision information, a resource that collides, and identification information of a node that collides with the resource; wherein the resource is a time slot or a time-frequency block;

When it is determined that the local node is a node that collides on the resource according to the resource in which the collision occurs and the identification information of the node that collides on the resource, the resource is released, and the resource that needs to be occupied is reselected.

Optionally, when it is determined that the local node is not a node that collides on the resource according to the resource that collides and the identification information of the node that collides on the resource, the resource is continuously occupied.

A resource collision information transmission apparatus provided by an embodiment of the present application includes:

a detecting unit, configured to determine, when a resource collision is detected, identification information of a node where the resource collision occurs; wherein the resource is a time slot or a time-frequency block;

The reporting unit is configured to report the resource collision information to the management station, where the resource that collides and the identification information of the node that collides on the resource, where the resource is a time slot or a time-frequency block.

Optionally, the detecting unit detects whether any resource collides by:

Optionally, when the detecting unit determines the identifier information of the node that collides with the resource, the detecting unit is specifically configured to:

Optionally, the specific frame is a previous frame of the current frame.

a receiving unit, configured to receive resource collision information sent by the management station;

a determining unit, configured to determine, by using the resource collision information, a resource that collides, and identifier information of a node that collides with the resource; wherein the resource is a time slot or a time-frequency block;

a selecting unit, configured to: when the local node is a node that collides on the resource according to the resource that collides with the resource and the identifier information of the node that collides on the resource, release the resource, and reselect the resource that needs to be occupied. .

Optionally, the selecting unit is further configured to: when the local node is not a node that collides on the resource, according to the resource that collides with the identifier and the identifier information of the node that collides on the resource, continue to occupy The resource.

Optionally, the device further includes the detecting unit and the reporting unit.

According to the solution of the present application, when a collision occurs on a certain resource, the identifier information of the node in which the resource collision occurs is determined; wherein the resource is a time slot or a time-frequency block; and the resource collision information is reported to the management station, including the occurrence The resource of the collision and the identification information of the node that collides on the resource, so that after the node determines that a collision occurs on the resource, the node sends the ID information of the node that the node successfully decoded on the resource for the previous time, and passes through the management station. Forwarding this information, the node that has collided with the resource can recognize this information, and only the node that actually collides with the resource needs to release the resource and perform resource reselection, thereby avoiding the situation that the node that has not collided releases the resource, thereby reducing the node weight. The frequency of selecting resources increases the performance of the entire system.

DRAWINGS

1 is a schematic flowchart of a method for transmitting resource collision information on a sending node side according to an embodiment of the present disclosure;

2 is a schematic flowchart of a method for transmitting resource collision information on a receiving node side according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a resource collision information transmission apparatus according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of another resource collision information transmission apparatus according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a third resource collision information transmission apparatus according to an embodiment of the present application.

detailed description

The resource described in the embodiment of the present application is exemplified by a time slot as an example. For Time-Division Multiplexing (TDM), the minimum unit of resources is an entire time slot resource, and frequency division multiplexing (Frequency -division multiplexing, FDM), that is, multiple nodes are frequency-multiplexed with one slot resource. In this case, the smallest unit of resources is not a time slot, but a time-frequency block.

The embodiment of the present application mainly performs the following optimization process for the prior art. Detection of collisions in cooperative mode of base stations:

The node continues to perform the underlying measurement. When a strong interference time slot is detected, the collision information is reported (the time slot in which the strong interference occurs can be implemented by reporting the time slot difference between the current time slot and the time slot), and the frame is piggybacked with a frame. Or the node ID of the previous multi-frame node correctly decoded in the time slot where the strong interference is located (if the previous frame node is not decoded, it may only transmit a strong interference indication, or may not send a strong interference indication to the base station). The management station determines the node ID of the collision according to the strong interference reporting information, and sends a downlink message to the node that may collide (for specific implementation, the corresponding information is directly forwarded, and if the base station has redundant information, it may also be determined according to the corresponding information. Indicates a node that is slightly farther to release). The node that received this message restarts listening and selects the slot resource. It should be noted that only the reported node ID is sent here. Sending reselection slot information does not send a strong interference indication to all nodes occupying the slot.

That is to say, in this case, the collision of the time slots is detected according to the underlying measurement, and the nodes do not need to interact with each other with any overhead information (the characteristics of the solution itself).

Compared with the ad hoc network mode, all the nodes that may collide release the slot resources, and only some of the nodes release the slot resources. In general, the continuity of the business is increased and the reliability of the system is improved.

It should be noted that, in the embodiment of the present application, the node performs the underlying measurement to detect the strong interference, and the following manner may be adopted: the ratio of the signal to the interference plus noise ratio (SINR) and the total received power may be used. determination. For example, if the total received power exceeds a certain threshold, but the SINR is less than a certain threshold, it can be determined that strong interference occurs; or the value of the interference power can be determined, for example, according to the SINR and the total received power, the signal power is determined to further determine the interference power, if the interference If the power is above a certain threshold, it can be determined that strong interference has occurred. The specific values of the above thresholds may be determined according to actual needs.

Therefore, on the sending node side, referring to FIG. 1 , a resource collision information transmission method provided by an embodiment of the present application includes:

S101. When detecting a resource collision, determining identification information of a node where the resource collision occurs;

S102. Report resource collision information to the management station, where the resource that collides and the identifier information of the node that collides on the resource, where the resource is a time slot or a time-frequency block.

The management station may be a base station, or may be one of all nodes under the base station, or may be other network nodes. After receiving the resource collision information reported by a node, the management station only needs to transparently transmit the resource collision information to other nodes, and no special processing is needed.

With the method, when a collision occurs on a certain resource, the identification information of the node in which the resource collision occurs is determined; wherein the resource is a time slot or a time-frequency block; the resource collision information is reported to the management station, including the collision The resource and the identification information of the node that collides on the resource, so that after the node determines that the collision occurs on the resource, the node sends the ID information of the node that the node successfully decoded on the resource for the previous time, and forwards the information through the management station. This information enables the node in which the resource collision occurs to recognize this information, and thus only the node that actually collides with the resource needs to release the resource and perform resource reselection, thereby avoiding the situation that the node that has not collided releases the resource, thereby reducing the node reselection. The frequency of resources increases the performance of the entire system.

Optionally, detect if any of the resources collide by:

Determining a resource in the specific frame before the current frame that has the same resource number as the collision, and passing the The resource is correctly decoded, and the identifier information of the node occupying the resource is obtained, and the identifier information of the node is used as the identifier information of the node where the collision frame collides with the collision resource.

Optionally, the specific frame is a previous frame of the current frame.

Correspondingly, on the receiving node side, referring to FIG. 2, a resource collision information transmission method provided by an embodiment of the present application includes:

S201. Receive resource collision information sent by the management station.

S202. Determine, by using the resource collision information, a resource that collides, and identifier information of a node that collides with the resource, where the resource is a time slot or a time-frequency block;

S203. When it is determined that the local node is a node that collides on the resource according to the resource that collides with the resource and the identifier information of the node that collides on the resource, the resource is released, and the resource that needs to be occupied is reselected.

An example of a specific embodiment is given below: a base station assisted slot collision mechanism.

For example, there are three nodes, node A, node B, and node C, which spatially multiplex the same resources, such as time slot X (the base station does not know this information).

Node D detects strong interference in time slot X, while node D reports this information to the base station in the next frame (100ms or 1s, depending on the system maintenance period), and includes the time slot X indication of the collision in the information, and the previous one. The ID of the node A that the frame is listening to.

The base station receives the information reported by the node D and sends it out.

After node A receives this information, node A determines that a time slot collision has occurred, and releases the resources of time slot X, and reselects the time slot resource.

Corresponding to the above method,

Referring to FIG. 3, a resource collision information transmission apparatus provided by an embodiment of the present application includes:

The detecting unit 11 is configured to determine, when the resource collision is detected, identification information of a node where the resource collision occurs;

The reporting unit 12 is configured to report resource collision information to the management station, where the resource that collides and the identification information of the node that collides on the resource are included; wherein the resource is a time slot or a time-frequency block.

Optionally, the detecting unit detects whether any resource collides by:

For any resource, the signal to interference and noise ratio SINR, and the total power received, determine whether the resource has a resource collision; or, by the interference power, determine whether the resource has a resource collision.

Determining a resource in the specific frame before the current frame that has the same resource number as the collision, and passing the The resource is correctly decoded, and the identifier information of the node occupying the resource is obtained, and the identifier information of the node is used as the identifier information of the node where the current frame collides with the resource.

Optionally, the specific frame is a previous frame of the current frame.

Referring to FIG. 4, another resource collision information transmission apparatus provided by an embodiment of the present application includes:

The receiving unit 21 is configured to receive resource collision information sent by the management station;

a determining unit 22, configured to determine, by using the resource collision information, a resource that collides, and identifier information of a node that collides with the resource; wherein the resource is a time slot or a time-frequency block;

The selecting unit 23 is configured to: when the local node is a node that collides on the resource according to the resource that collides with the resource and the identifier information of the node that collides on the resource, release the resource, and reselect the required occupation. Resources.

Optionally, the device further includes the foregoing detecting unit and the reporting unit. That is, the same device can be used as a sending node or a receiving node, and the steps described in the two methods provided by the foregoing embodiments of the present application can be performed.

Referring to FIG. 5, a third resource collision information transmission apparatus provided by an embodiment of the present application includes:

The processor 600 is configured to read a program in the memory 620 and perform the following process:

The resource collision information is reported to the management station by the transceiver 610, where the resource that collides and the identification information of the node that collides on the resource are included; wherein the resource is a time slot or a time-frequency block;

The transceiver 610 is configured to receive and transmit data under the control of the processor 600.

Optionally, the processor 600 detects whether any of the resources collide by:

Optionally, the processor 600 determines the identifier information of the node that the resource collides, including:

Optionally, the specific frame is a previous frame of the current frame.

In addition, the processor 600 can also be used to:

Receiving resource collision information sent by the management station by the transceiver 610;

Determining, by the resource collision information, a resource in which a collision occurs, and an identification letter of a node at which the resource collides Wherein the resource is a time slot or a time-frequency block;

Optionally, when the processor 600 determines that the local node is not a node that collides on the resource according to the resource that collides and the identifier information of the node that collides on the resource, the processor 600 continues to occupy the resource.

Here, in FIG. 5, the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 600 and various circuits of memory represented by memory 620. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 610 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium. For different user equipments, the user interface 630 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 in performing operations.

In summary, in the embodiment of the present application, when the resource collision is detected, the identifier information of the node where the resource collision occurs is determined; wherein the resource is a time slot or a time-frequency block; and the resource collision information is reported to the management station, where The resource including the collision and the identification information of the node that collides on the resource, so that the node sends the ID information of the node that successfully decoded the previous time after the resource collision is determined, and the information is forwarded by the management station, so that the occurrence occurs. The node colliding with the resource can recognize this information, and only the node that actually encounters the resource collision needs to release the resource and perform resource reselection, thereby avoiding the situation that the node without the collision releases the resource, thereby reducing the frequency of the node reselecting the resource and improving the frequency. The performance of the entire system.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can 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 for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit and scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

A resource collision information transmission method, characterized in that the method comprises:

When a resource collision is detected, determining identification information of a node where the resource collision occurs;

The resource collision information is reported to the management station, where the resource in which the collision occurs and the identification information of the node that collides on the resource; wherein the resource is a time slot or a time-frequency block.
The method according to claim 1, wherein whether any of the resources collides is detected by:

For any resource, it is determined whether the resource has a resource collision by the signal to interference and noise ratio SINR and the total received power; or, by the interference power, it is determined whether the resource has a resource collision.
The method according to claim 1, wherein the determining the identification information of the node in which the resource collision occurs includes:

Determining a resource in the specific frame before the current frame that is the same as the resource number of the collision, and obtaining the identification information of the node occupying the resource by correctly decoding the resource in the specific frame, and using the identifier information of the node as the current frame. Identification information of the node where the resource collides.
The method of claim 1 wherein said particular frame is a previous frame of said current frame.
A resource collision information transmission method, characterized in that the method comprises:

Receiving resource collision information sent by the management station;

Determining, by the resource collision information, a resource that collides, and identification information of a node that collides with the resource; wherein the resource is a time slot or a time-frequency block;

When it is determined that the local node is a node that collides on the resource according to the resource in which the collision occurs and the identification information of the node that collides on the resource, the resource is released, and the resource that needs to be occupied is reselected.
The method according to claim 5, wherein when it is determined that the local node is not a node that collides on the resource according to the resource in which the collision occurs and the identification information of the node that collides on the resource, proceeding Occupy this resource.
A resource collision information transmission device, characterized in that the device comprises:

a detecting unit, configured to determine, when a resource collision is detected, identification information of a node where the resource collision occurs;

The reporting unit is configured to report the resource collision information to the management station, where the resource that collides and the identification information of the node that collides on the resource, where the resource is a time slot or a time-frequency block.
The apparatus according to claim 7, wherein said detecting unit detects whether any of the resources collides by:

For any resource, determine whether the resource occurs by the signal to interference and noise ratio SINR and the total received power. The resource collides; or, by the interference power, it is judged whether the resource has a resource collision.
The device according to claim 7, wherein the detecting unit determines the identification information of the node where the resource collision occurs, and is specifically used to:

Determining a resource in the specific frame before the current frame that is the same as the resource number of the collision, and obtaining the identification information of the node occupying the resource by correctly decoding the resource in the specific frame, and using the identifier information of the node as the current frame. Identification information of the node where the resource collides.
The apparatus of claim 7, wherein the particular frame is a previous frame of the current frame.
A resource collision information transmission device, characterized in that the device comprises:

a receiving unit, configured to receive resource collision information sent by the management station;

a determining unit, configured to determine, by using the resource collision information, a resource that collides, and identifier information of a node that collides with the resource; wherein the resource is a time slot or a time-frequency block;

a selecting unit, configured to: when the local node is a node that collides on the resource according to the resource that collides with the resource and the identifier information of the node that collides on the resource, release the resource, and reselect the resource that needs to be occupied. .
The apparatus according to claim 11, wherein the selecting unit is further configured to: when the resource according to the collision and the identification information of the node that collides on the resource, determine that the local node is not in the resource When the node on which the collision occurred, the resource continues to be occupied.
The device according to claim 11 or 12, characterized in that the device further comprises a detecting unit and a reporting unit in the device according to any one of claims 7 to 10.
A resource collision information transmission device, comprising:

A processor for reading a program in the memory, performing the following process:

When a resource collision is detected, determining identification information of a node where the resource collision occurs;

Reporting, by the transceiver, the resource collision information to the management station, where the resource that collides and the identification information of the node that collides on the resource; wherein the resource is a time slot or a time-frequency block;

A transceiver for receiving and transmitting data under the control of a processor.
The apparatus according to claim 14, wherein the processor is specifically configured to detect whether any of the resources collide by:

For any resource, it is determined whether the resource has a resource collision by the signal to interference and noise ratio SINR and the total received power; or, by the interference power, it is determined whether the resource has a resource collision.
The device according to claim 14, wherein the processor is specifically configured to:

Determining a resource in the specific frame before the current frame that has the same resource number as the collision, and passing the The resource is correctly decoded, and the identifier information of the node occupying the resource is obtained, and the identifier information of the node is used as the identifier information of the node where the current frame collides with the resource.
The apparatus of claim 14, wherein the particular frame is a previous frame of the current frame.
A resource collision information transmission device, characterized in that the device comprises:

A processor for reading a program in the memory, performing the following process:

Receiving resource collision information sent by the management station through the transceiver;

Determining, by the resource collision information, a resource that collides, and identification information of a node that collides with the resource; wherein the resource is a time slot or a time-frequency block;

When it is determined that the local node is a node that collides on the resource according to the resource that collides with the resource and the identifier information of the node that collides on the resource, the resource is released, and the resource that needs to be occupied is reselected;

A transceiver for receiving and transmitting data under the control of a processor.
The device according to claim 18, wherein the processor is further configured to:

When it is determined that the local node is not a node that collides on the resource according to the resource in which the collision occurs and the identification information of the node that collides on the resource, the resource is continuously occupied.