CN110753355A

CN110753355A - Resource pool configuration method, device and system

Info

Publication number: CN110753355A
Application number: CN201810811608.0A
Authority: CN
Inventors: 杨瑾; 毕峰
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2018-07-23
Filing date: 2018-07-23
Publication date: 2020-02-04
Also published as: WO2020019774A1

Abstract

The embodiment of the invention discloses a resource pool configuration method, a device and a system, wherein the resource pool configuration method comprises the following steps: the first node obtains resource pool configuration information, wherein the resource pool configuration information comprises at least one of the following: resource configuration indication of a resource pool, and state information of the resource pool; the first node determines the state of the resource pool, wherein the state of the resource pool is an activated state or an inactivated state. The embodiment of the invention realizes the flexible configuration of the resource pool.

Description

Resource pool configuration method, device and system

Technical Field

The present invention relates to, but not limited to, the field of communications, and in particular, to a method, an apparatus, and a system for resource pool configuration.

Background

With the development of wireless communication technology and the increasing demand of users for communication, fifth Generation mobile communication (5G, 5th Generation) technology has become a trend of future network development in order to meet higher, faster and newer communication needs.

In a 5G system, due to factors such as frequency band resources used by the system and network deployment requirements, the deployment density of 5G base stations (gbb or ng-eNB) is high, and some base stations do not have direct connection with a core network. In order to achieve lower network deployment cost, provide stable network service, and achieve higher resource efficiency and network deployment flexibility, a Backhaul link (Backhaul link) connection needs to be established between base stations. As shown in fig. 1, since the gnbs B and gnbs C are not directly connected to the core network, information on an access link (access link) between the base station and the User Equipment (UE) cannot be transmitted to the core network. The connection of the base station gNB a to the core network may enable base stations (e.g., gNB B and gNB C) that are not directly connected to the core network to be indirectly connected to the core network by establishing wireless backhaul link connections between the gNB a and the gNB B and between the gNBA and the gNB C. By forwarding over the backhaul link of gNB a, gNB B and gNB C may provide for the served UEs to exchange information with the core network. At this time, in order to coordinate resources between the base stations and avoid collision, it is necessary to configure a corresponding resource pool for each base station.

In the 5G communication system, it is also necessary to support a Sidelink (Sidelink) communication scheme. The Sidelink communication means that when there is a service to be transmitted between UEs, the service data between the UEs is directly transmitted to the target UE through the Sidelink by the data source UE, without passing through the network side, that is, without passing through the forwarding of the cellular link between the UE and the base station. Fig. 2 is a schematic diagram of a sildelink communication structure of the related art, and as shown in fig. 2, the mode in which the UE and the UE directly communicate with each other has a characteristic that is obviously different from a communication mode of a conventional cellular system, and for a short-distance communication user who can use the sildelink communication, the sildelink communication not only saves wireless spectrum resources, but also reduces data transmission pressure of a core network, can reduce system resource occupation, increase spectral efficiency of the cellular communication system, reduce terminal transmission power consumption, and save network operation cost to a great extent.

In a 5G communication system, there is no effective solution proposed at present for flexibly configuring resource pools for different base stations or nodes, or different communication modes, service types, and the like and for meeting the requirement of resource coordination scheduling on the basis of the resource pools. In a 5G system, resource pool configuration cannot be obtained on a backhaul link between base stations or in functional requirements such as Sidelink communication, and effective resource utilization and information transmission are realized. No effective solution to this problem has been proposed.

Disclosure of Invention

The embodiment of the invention provides a resource pool configuration method, a device and a system, which can realize flexible configuration of a resource pool.

The embodiment of the invention provides a resource pool configuration method, which comprises the following steps:

the first node obtains resource pool configuration information, wherein the resource pool configuration information comprises at least one of the following: resource configuration indication of a resource pool, and state information of the resource pool;

and the first node determines the state of the resource pool, wherein the state of the resource pool is an activated state or an inactivated state.

In an embodiment of the present invention, the method further includes:

the first node schedules or contends for a selected resource in a resource pool in an active state, the scheduled or selected resource for transmission of signals on associated links, the associated links including links for signal transmission using resources in the resource pool.

In an embodiment of the present invention, the method further includes:

and the first node sends the state of the resource pool to a fourth node.

In this embodiment of the present invention, the obtaining, by the first node, resource pool configuration information includes at least one of:

the first node obtains the resource pool configuration information according to the pre-configuration information;

and the first node acquires the resource pool configuration information according to the indication.

In this embodiment of the present invention, the resource pool configuration information includes at least one of the following:

a period of the resource pool;

in a resource pool period, the number and positions of time domain resource units contained in the resource pool;

the number and positions of frequency domain resource units contained in the resource pool;

the type of time domain resource unit in the resource pool;

a status of the resource pool.

In this embodiment of the present invention, the type of the time domain resource unit includes any one of: downlink resources, uplink resources, flexible resources.

In this embodiment of the present invention, the determining, by the first node, the state of the resource pool includes at least one of:

the first node judges and determines the state of the resource pool;

the first node determines the state of the resource pool according to the pre-configured state information of the resource pool;

and the first node determines the state of the resource pool according to the indicated resource pool state information.

In this embodiment of the present invention, the determining, by the first node, the state of the resource pool includes:

the first node decides to determine the state of the resource pool according to at least one of the following decisions:

the number of time domain resource units contained in the resource pool;

the location of time domain resource units contained in the resource pool;

the number of frequency domain resource units contained in the resource pool;

the location of frequency domain resource units contained in the resource pool;

a traffic demand of the first node;

a number of nodes having wireless links with the first node;

a number of nodes that the first node communicates on the associated link;

traffic demand of a node communicating with the first node over the associated link;

traffic demand on the associated link;

an amount of load on the associated link;

channel measurements of the associated link.

In this embodiment of the present invention, the status information of the resource pool includes at least one of the following:

state reversal information of the resource pool;

a status of the resource pool within a period;

the state of the resource pool within a predetermined time, the predetermined time comprising any one of: k periods, k time domain units, k being an integer greater than or equal to 1;

a status of the resource pool;

a validity period of the state configuration of the resource pool;

identification information of the resource pool.

In this embodiment of the present invention, the determining, by the first node, the state of the resource pool according to the indicated resource pool state information further includes:

and the first node determines the resource pool corresponding to the state information of the resource pool according to an index relationship, wherein the index relationship comprises the one-to-one correspondence relationship between the state information of the resource pool and the resource pool.

the second node determines and indicates resource pool configuration information, wherein the resource pool configuration information comprises at least one of the following: resource configuration indication of a resource pool and state information of the resource pool, wherein the state of the resource pool is an activated state or an inactivated state.

In the embodiment of the present invention, the method further includes:

the second node schedules resources in a resource pool in an active state and indicates the scheduled resources for transmission of signals on associated links including links using resources in the resource pool for signal transmission.

In this embodiment of the present invention, the second node determines the resource pool configuration information, which includes at least one of the following:

the second node configures and determines the resource pool configuration information;

the second node determines the resource pool configuration information according to the indication;

and the second node determines the resource pool configuration information according to the pre-configuration information.

In this embodiment of the present invention, the configuring, by the second node, the determining the resource pool configuration information includes:

the second node decides to determine the state of the resource pool according to at least one of the following decisions:

the number of time domain resource units contained in the resource pool;

the location of time domain resource units contained in the resource pool;

the number of frequency domain resource units contained in the resource pool;

the location of frequency domain resource units contained in the resource pool;

a traffic demand of the second node;

a number of nodes having wireless links with the second node;

a number of nodes that the second node communicates on the associated link;

a traffic demand of a node communicating with the second node over the associated link;

traffic demand of a third node, the third node being a node that communicates on the associated link using resources in the resource pool;

a number of nodes communicating with the third node over the associated link;

a traffic demand of a node in communication with the third node over the associated link;

traffic demand on the associated link;

an amount of load on the associated link;

channel measurements of the associated link;

resource pool configuration information of a neighboring node of the third node;

state information of a resource pool of a neighboring node of the third node;

a measurement feedback report of the third node;

a resource request of the third node.

a period of the resource pool;

the number and the positions of time domain resource units contained in the resource pool in one resource pool period;

the type of time domain resource unit in the resource pool;

a status of the resource pool.

In this embodiment of the present invention, the indicating, by the second node, the resource pool configuration information includes:

the second node indicates the resource pool configuration information by at least one of: high-layer signaling, physical layer signaling and configuration signaling; wherein the content of the first and second substances,

the higher layer signaling comprises at least one of: radio resource control messages, medium access control elements;

the physical layer signaling includes at least one of: downlink control information, uplink control information, backhaul link control information, and sidelink control information.

state reversal information of the resource pool;

the state of the resource pool in one period;

a status of the resource pool;

a validity period of the state configuration of the resource pool;

identification information of the resource pool.

In this embodiment of the present invention, the indicating, by the second node, the status information of the resource pool includes:

and the second node indicates the state information of the resource pool corresponding to the resource pool according to an index relationship, wherein the index relationship comprises the one-to-one correspondence relationship between the state information of the resource pool and the resource pool.

The embodiment of the invention provides a resource pool configuration device, which comprises:

an obtaining module, configured to obtain resource pool configuration information, where the resource pool configuration information includes at least one of the following: resource configuration indication of a resource pool and state information of the resource pool, wherein the state of the resource pool is an activated state or an inactivated state;

a first determining module to determine a status of the resource pool.

a second determining module, configured to determine resource pool configuration information, where the resource pool configuration information includes at least one of the following: resource configuration indication of a resource pool and state information of the resource pool, wherein the state of the resource pool is an activated state or an inactivated state;

and the indicating module is used for indicating the resource pool configuration information.

The embodiment of the invention provides a resource pool configuration device, which comprises a processor and a computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, and when the instructions are executed by the processor, any one of the resource pool configuration methods is realized.

An embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of any one of the resource pool configuration methods described above.

The embodiment of the invention provides a resource pool configuration system, which comprises:

a first node, configured to obtain resource pool configuration information, where the resource pool configuration information includes at least one of: resource configuration indication of a resource pool, and state information of the resource pool; determining the state of the resource pool, wherein the state of the resource pool is an activated state or an inactivated state;

the second node is configured to determine and indicate resource pool configuration information, where the first resource pool configuration information includes at least one of the following: resource configuration indication of a resource pool, status information of the resource pool.

The embodiment of the invention comprises the following steps: the first node obtains resource pool configuration information, wherein the resource pool configuration information comprises at least one of the following: resource configuration indication of a resource pool, and state information of the resource pool; the first node determines the state of the resource pool, wherein the state of the resource pool is an activated state or an inactivated state. The embodiment of the invention realizes the flexible configuration of the resource pool.

Additional features and advantages of embodiments of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of the invention. The objectives and other advantages of the embodiments of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the examples of the invention serve to explain the principles of the embodiments of the invention and not to limit the embodiments of the invention.

Fig. 1 is a schematic structural diagram illustrating establishment of a backhaul link between base stations according to the related art;

fig. 2 is a schematic structural composition diagram of a sildelink communication of the related art;

fig. 3 is a flowchart of a resource pool configuration method according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a time domain resource structure according to an embodiment of the present invention;

fig. 5 is a flowchart of a resource pool configuration method according to another embodiment of the present invention;

fig. 6 is a diagram of resource pool configuration information of a backhaul link of example 1 of the present invention;

fig. 7 is a first schematic diagram of a type configuration of a time domain resource unit of a resource pool of example 1 of the present invention;

fig. 8 is a diagram ii of a type configuration of time domain resource units in a resource pool of example 1 of the present invention;

FIG. 9 is a schematic representation of an indication of the status of the resource pool of example 1 of the present invention;

fig. 10 is a schematic diagram of resource pool configuration information of sildenk of example 2 of the present invention;

fig. 11 is a schematic structural diagram of a resource pool configuration apparatus according to another embodiment of the present invention;

fig. 12 is a schematic structural diagram of a resource pool configuration apparatus according to another embodiment of the present invention;

fig. 13 is a schematic structural diagram of a resource pool configuration system according to another embodiment of the present invention.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments of the present invention may be arbitrarily combined with each other without conflict.

The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.

Referring to fig. 3, an embodiment of the present invention provides a resource pool configuration method, including:

step 300, the first node obtains resource pool configuration information, where the resource pool configuration information includes at least one of the following: resource configuration indication of a resource pool, status information of the resource pool.

In the embodiment of the present invention, the resource pool includes a group of dedicated time-frequency resources, and each resource pool includes at least one time-domain resource unit in the time domain and at least one frequency-domain resource unit in the frequency domain.

Wherein the time domain resource unit comprises at least one of:

symbol, slot (slot), mini-slot (mini-slot).

The frequency domain resource unit includes a frequency domain Resource Block (RB).

In the 5G communication system, the minimum granularity of the time domain resource is a symbol (symbol), and specifically, is divided into a Cyclic Prefix-OFDM Orthogonal Frequency division multiplexing (CP-OFDM) symbol or a Discrete fourier transform (DFT-S-OFDM) based OFDM symbol.

A slot may be formed by consecutive symbols of 12 long Cyclic prefixes (extended CP) or 14 normal Cyclic prefixes (normal CP), as shown in fig. 4; alternatively, the mini-slot may be formed by at least one continuous symbol (7 symbols or less).

The minimum granularity of the frequency domain resource is sub-carrier (sub-carrier), each sub-carrier contains different frequency domain widths according to different system configurations, and the frequency domain widths include at least one of the following: 15 kilohertz (kHz), 30kHz, 60kHz, 120kHz, 240 kHz. One frequency domain RB may be constructed of 12 consecutive subcarriers.

As described above, a symbol or slot or mini-slot is a time domain resource unit in a 5G system, and an RB is a frequency domain resource unit. In the embodiment of the invention, the time domain resource unit and the frequency domain resource unit in the 5G system are taken as the granularity, and the configuration scheme of the resource pool is explained.

In the 5G system, there are three types of time domain symbols, which are: downlink (DL symbol), Uplink (Uplink) symbol (UL symbol), and Flexible (Flexible) symbol (X symbol). Each symbol in each slot may be configured as any one of 3 symbol types.

The time domain resource units contained in the resource pool in the time domain can be continuous or discontinuous; the frequency domain resource units contained in the frequency domain may be contiguous or non-contiguous.

In the embodiment of the present invention, the resource configuration indication of the resource pool may be a semi-static configuration, that is, the configured resource pool remains unchanged for a certain time, or is a static configuration.

the first node obtains resource pool configuration information according to the pre-configuration information;

and the first node acquires the resource pool configuration information according to the indication. Resource conflicts between resource pools can be avoided by collectively configuring the resource pools by other nodes (such as the second node).

In the embodiment of the present invention, the first node obtains the configured at least one resource pool according to the resource pool configuration information, and the configured resource pool is also referred to as a resource pool of the first node.

The resource pool configured for the first node may be used for transmission of signals of any wireless link associated with the first node, or for transmission of signals of a particular one or more wireless links associated with the first node. The transmission of signals for which radio links the resource pool may specifically be used for may be predefined, or configured by the second node, or indicated in the resource pool configuration information.

When the resource pool of the first node is used for transmission of signals of any radio link associated with the first node, the resource pool of the first node may be used for transmission of radio link signals between the first node and another node, and may also be used for transmission of radio link signals between the first node and at least one UE. For example, when the first node is a base station, the resource pool may be used for transmission of signals of a backhaul link between the base station and other base stations, or for transmission of signals of an access link between the base station and a served UE; when the first node is a UE, the resource pool may be used for transmission of Sidelink signals between the UE and other UEs; when the first node is a relay, the resource pool may be used for transmission of signals of a backhaul link between the relay and a base station, or for transmission of signals of an access link between the relay and a served UE.

When the resource pool of the first node is used for transmission of signals of a particular one of the radio links associated with the first node, the resource pool is configured as a dedicated resource pool for the particular one of the radio links, that is, any one of the resource pools may be configured as a dedicated resource pool for the particular one of the radio links. The wireless link here may be a backhaul link, or an access link, or a Sidelink. The dedicated resource pool of a particular radio link means that this resource pool can only be used for the bearer of signals on that particular radio link. For example, the base station a is used as a first node, and obtains a resource pool configuration from an Operation, Administration and Maintenance (OAM) manager, and the resource pool is configured as a dedicated resource pool of a backhaul link between the base station a and the base station B, then the resource pool can only be used for transmission of signals of the backhaul link between the base station a and the base station B, cannot be used for transmission of signals of an access link between the base station a and the UE, and cannot be used for transmission of signals of the backhaul link between the base station a and another base station except the base station B.

Further, at least one resource pool indicated in the resource pool configuration information may be configured as a dedicated resource pool on a specific one of the radio links of the first node, i.e. multiple resource pools may be configured on the same radio link.

The first node obtains a resource configuration instruction for at least one resource pool from the resource pool configuration information, and determines at least one of the following contained in the configured resource pool according to the resource configuration instruction: time domain resources, frequency domain resources.

In the embodiment of the present invention, the resource pool configuration information includes at least one of the following:

the period of the resource pool, that is, the period of the resource pool in the time domain;

the number and the positions of time domain resource units contained in a resource pool in one resource pool period;

the number and location of frequency domain resource units (i.e., frequency domain RBs) contained in the resource pool;

the type of time domain resource unit in the resource pool;

status of the resource pool.

Wherein the type of the time domain resource unit includes any one of: downlink resources, uplink resources, flexible resources. The type of the time domain resource unit in the resource pool can be determined by the first node itself or indicated by the second node configuration. Specifically, the first node may determine the type of the time domain resource unit according to the service requirement, and the specific determination method is not used to limit the protection scope of the embodiment of the present invention, and is not described herein again.

In the embodiment of the present invention, when the resource pool configuration information includes resource configuration indications of two or more resource pools, the resource configuration indications of different resource pools and/or the state information of the resource pools are independent of each other.

For example, in the time domain, different resource pools may be configured to have the same or different periods, and time domain resource units in different resource pools may overlap, that is, different resource pools include some or all of the same time domain resource units; in the frequency domain, there may be an overlap of frequency domain resource units in different resource pools, i.e. different resource pools contain some or all of the same frequency domain RBs.

For another example, when the same time domain resource unit is configured in different resource pools, the same time domain resource unit may be indicated as different time domain unit types in different resource pools.

Step 301, the first node determines the state of the resource pool, where the state of the resource pool is an active state or an inactive state.

In the embodiment of the present invention, the states of the resource pools include an active state or an inactive state, that is, the resource pools may be set to be in an active state or an inactive state, and are configured among multiple resource pools of the same node, where the states of the resource pools are independent. Here, the resource pool is a resource pool indicated to the first node in the resource pool configuration information.

The resource pool set to the active state may be further used for transmission or bearer of a signal. When the resource pool is configured as a dedicated resource pool for a specific one of the radio links and the resource pool is in an active state, the resources in the resource pool can be used for transmission or reception of signals of the specific one of the radio links.

the first node judges and determines the state of the resource pool;

the first node determines the state of the resource pool according to the information of the pre-configured state of the resource pool;

and the first node determines the state of the resource pool according to the indicated information of the state of the resource pool.

Resource conflicts between resource pools in the active state can be avoided by collectively determining the state of the resource pools by other nodes (such as a second node or a resource pool state management master node).

The resource pool state management main node comprises any one of the following nodes: the system comprises a second node, a network side entity, a base station and a resource management main node.

Wherein the first node decides to determine the state of the resource pool according to at least one of:

the number of time domain resource units contained in the resource pool;

the location of time domain resource units contained in the resource pool;

the number of frequency domain resource units contained in the resource pool;

the location of frequency domain resource units contained in the resource pool;

a traffic demand of the first node;

a number of nodes having wireless links with the first node;

a number of nodes that the first node communicates on associated links, the associated links including links that use resources in a resource pool for signal transmission;

traffic demand on the associated link;

the amount of load on the associated link;

channel measurements of the associated link.

For example, the first node is configured with a resource pool a and a resource pool B as dedicated resource pools for the access link, and the number of time domain resource units included in the resource pool a is greater than that in the resource pool B, the first node may determine the states of the resource pool a and the resource pool B according to the UE load of the access link. Specifically, when the load capacity of the access link is low, the resource pool B is activated, and the resource pool A is set in an inactive state; when the load capacity of the access link is high, activating the resource pool A, and putting the resource pool B in an inactive state; when the capacity of the access link is very high, the resource pools a and B are activated, and the resources in the two resource pools are used for signal transmission of the access link.

Further, after the first node determines the state of the corresponding resource pool, the first node may send the state of the resource pool to the fourth node, that is, the determination result may be indicated to the fourth node through a signaling, for example, any one of the following nodes: the system comprises adjacent base stations, adjacent relay stations, UE (user equipment) with a wireless link with a first node, a network side entity, a resource management main node and the like. Specifically, the first node may notify the fourth node of the status of the corresponding resource pool in a unicast or broadcast or multicast manner through high-layer signaling or physical layer signaling.

Wherein, the higher layer signaling, such as Radio Resource Control (RRC) message, or media Access Control Element (MAC CE, Medium Access Control, CE, Control Element);

the physical layer signaling is Downlink Control Information (DCI), Uplink Control Information (UCI), backhaul link control information (backhaul link control information), or side link control information (SCI).

Here, the decision result refers to a decision of the state of at least one resource pool to which the first node belongs, that is, information that the resource pool of the first node is in an active state or an inactive state.

The resource management master node may be a base station, a relay station, or the like, and is responsible for resource management coordination of a plurality of nodes within a certain range.

In the embodiment of the present invention, what policy is specifically adopted by the first node to determine the state of the resource pool according to the information decision is not used to limit the protection scope of the embodiment of the present invention, and the specific policy is not limited in the embodiment of the present invention, and is not described here again.

In the embodiment of the present invention, when the first node determines the status of the resource pool according to the preconfigured or indicated status information of the resource pool, the status information of the resource pool may indicate the status of any one or more resource pools.

In the embodiment of the present invention, the status information of the resource pool includes at least one of the following:

state reversal information of the resource pool;

a status of the resource pool within a period;

a status of the resource pool;

a validity period of the state configuration of the resource pool;

identification information of the resource pool.

For example, when the indicated resource pool is currently in an active state, the state flipping information of the resource pool is understood to indicate that the resource pool is changed to an inactive state, and vice versa. And the indicated resource pool keeps the current state unchanged before receiving the next state overturning information.

The state of the resource pool in one period indicates that the indicated resource pool is in an active state or an inactive state and is only valid in one period. The period refers to a period of the corresponding resource pool in a time domain, or an indication period of state information of the resource pool. The indication period of the status information of the resource pool may be configured by the system or predefined. When the status information of the resource pool indicates that the status of the corresponding resource pool is active, it means that the resource pool is set to be active in the current cycle or the next cycle, and vice versa.

And the state of the resource pool in the preset time represents the state of the corresponding resource pool in the indicated preset time. The predetermined time includes any one of:

the information indicating the state of the resource pool indicates that the state of the resource pool in k periods is an activated state or an inactivated state by taking the period of the corresponding resource pool as a unit;

the status information of the resource pool indicates that the status of the resource pool in k time domain units is active or inactive, for example, predefined time domain units are time slots, or subframes, or radio frames (frames).

When two or more resource pools are configured for the same node, the state information of the resource pools needs to further distinguish the resource pools corresponding to the indication, that is, the state information of the resource pools also includes identification information of the resource pools, and the identification information of the resource pools includes any one of the following:

the index number of the resource pool and the information of the mapping relation existing between the index number of the resource pool and the resource pool.

That is, the resource pool is indicated by a resource pool index (index), or indicated by information having a mapping relationship with the resource pool.

When the resource pool is indicated by the resource pool index (index), the resource pools of the same node may define the corresponding resource pool index one by one in sequence, and the state information of the resource pools may indicate the state of the corresponding resource pools by the resource pool index and the configured state information of the resource pools.

The state information of the resource pool obtained by the first node can indicate the state configuration indication of one or more resource pools, and the corresponding state indication is distinguished through corresponding resource pool index numbers.

When the resource pool is indicated through the information of the mapping relation with the resource pool, the resource pool is indicated through the implicit index relation; the first node may implicitly determine, according to a predefined rule, a resource pool corresponding to the status indication information of the resource pool by receiving a resource used by the status information of the resource pool, or a Radio Network Temporary Identifier (RNTI), a search space, or a time domain resource location, and the like, so as to determine the status of the indicated resource pool.

In another embodiment of the present invention, the determining, by the first node, the state of the resource pool according to the indicated resource pool state information further includes:

and the first node determines the resource pool corresponding to the state information of the resource pool according to an index relationship, wherein the index relationship comprises the one-to-one corresponding relationship between the state information of the resource pool and the resource pool.

In another embodiment of the present invention, the method further comprises:

step 302, the first node schedules or selects resources in the active resource pool, the scheduled or selected resources are used for transmission of signals on the associated links, and the associated links include links using the resources in the resource pool for signal transmission.

In the embodiment of the present invention, the first node may schedule the resource in the resource pool in the active state, or instruct to schedule the resource in the resource pool in the active state according to the configuration of the instructed resource, or contend for selecting the resource in the resource pool in the active state; the resources in the resource pool in the inactive state are not available for use.

The scheduling of resources by other nodes (e.g., the second node) may be coordinated to avoid conflicts in the scheduled resources.

The first node may schedule transmissions carrying signals on the respective links using the scheduled or contention selected resources.

The first node schedules resources in the resource pool in the active state, specifically, on the time domain resources and the frequency domain resources included in the resource pool, the first node schedules and uses one or more time domain resource units and frequency domain resource units therein for signal transmission on the corresponding link.

When the activated resource pool is a dedicated resource pool of a specific wireless link, the first node schedules resources in the resource pool for transmission of signals between nodes of the specific wireless link; alternatively, a contention selection resource is used in the resource pool for the transmission of signals with the corresponding node.

For example, when the resource pool a is a dedicated resource pool of an access link between the first node and a served UE and is configured to be in an active state, the first node schedules resources in the resource pool a to perform signal transmission with the UE, which specifically includes at least one of the following:

a first node sends a downlink signal of an access link to UE;

the first node schedules uplink resources of the access link for the UE and receives uplink signals from the UE on the respective resources.

For another example, when the resource pool B is a dedicated resource pool of a backhaul link between the first node and the base station B and is configured to be in an active state, the first node schedules resources in the resource pool B to perform signal transmission with the base station B, and specifically includes at least one of the following:

a first node sends a downlink signal of a backhaul link to a base station B;

the first node schedules uplink resources of the backhaul link for the base station B and receives an uplink signal from the base station B on the corresponding resources.

At this time, the base station B may be a child node of the first node.

For another example, the first node is a UE, and when the resource pool C is a dedicated resource pool for performing a Sidelink communication between the first node and surrounding UEs and the resource pool C is configured in an active state, the first node selects a resource in the resource pool C through contention, and transmits a Sidelink signal on the selected resource, and other UEs perform detection and reception in the resource pool C.

Referring to fig. 5, another embodiment of the present invention provides a resource pool configuration method, including:

step 500, the second node determines and indicates resource pool configuration information, where the resource pool configuration information includes at least one of the following: resource configuration indication of a resource pool and state information of the resource pool, wherein the state of the resource pool is an activated state or an inactivated state.

In this embodiment of the present invention, the second node determines that the resource pool configuration information includes at least one of:

the second node configures and determines resource pool configuration information;

the second node determines resource pool configuration information according to the indication;

That is, the resource pool configuration information indicated by the second node may be determined by the second node itself configuration; or, the second node obtains the information according to the indication of other nodes (such as a network side entity); or, obtained by the second node according to the pre-configuration information.

The resource pool indicated in the resource pool configuration information indicated by the second node is indicated to the third node for the third node to use on the associated link, and the corresponding resource pool may also be referred to as a resource pool of the third node, where the third node may be the first node or another node.

Wherein the resource pool configured for the third node may be used for transmission of signals of any wireless link associated with the third node or for transmission of signals of a specific wireless link or links associated with the third node. The resource pool of the third node may specifically be used for which transmission of signals of the wireless links may be predefined, or configured by the second node, or indicated in the resource pool configuration information.

When the resource pool of the third node is used for transmission of signals of any wireless link related to the third node, the resource pool of the third node may be used for transmission of signals of the wireless link between the third node and another node, and may also be used for transmission of signals of the wireless link between the third node and at least one UE. For example, when the third node is a base station, the resource pool may be used for transmission of signals of a backhaul link between the base station and other base stations, or for transmission of signals of an access link between the base station and a served UE; when the third node is a UE, the resource pool may be used for transmission of Sidelink signals between the UE and other UEs; when the third node is a relay, the resource pool may be used for transmission of signals of a backhaul link between the relay and a base station, or for transmission of signals of an access link between the relay and a served UE.

When the resource pool of the third node is used for transmission of signals of a specific one of the radio links, the resource pool is configured as a dedicated resource pool of the specific one of the radio links, that is, any one of the resource pools may be configured as a dedicated resource pool of the specific one of the radio links. The wireless link here may be a backhaul link, or an access link, or a Sidelink. The dedicated resource pool of a particular radio link means that this resource pool can only be used for the bearer of signals on that particular radio link. For example, base station a obtains a resource pool configuration from a second node (resource management node) as a third node, and this resource pool is configured as a dedicated resource pool for a backhaul link between base station a and base station B, then this resource pool can be used only for transmission of signals carrying the backhaul link between base station a and base station B, cannot be used for transmission of signals of an access link between base station a and UE, and cannot be used for transmission of signals of the backhaul link between base station a and other base stations except base station B.

Further, at least one resource pool indicated in the resource pool configuration information may be configured as a dedicated resource pool on a specific radio link, i.e. multiple resource pools may be configured on the same radio link.

The second node respectively contains time domain resources and/or frequency domain resources in the resource pool indicated in the resource pool configuration information.

In this embodiment of the present invention, the configuration information of the resource pool includes at least one of the following:

the type of time domain resource unit in the resource pool;

status of the resource pool.

Wherein the type of the time domain resource unit comprises any one of the following types: downlink resources, uplink resources, flexible resources. The type of the time domain resource unit in the resource pool can be determined by the first node itself. Specifically, the first node may determine the type of the time domain resource unit according to the service requirement, and the specific determination method is not used to limit the protection scope of the embodiment of the present invention, and is not described herein again.

In the embodiment of the present invention, when the resource pool configuration information includes resource configuration indications of two or more resource pools, the resource configuration indications of different resource pools are independent of each other.

In the embodiment of the present invention, when the second node configures and determines the resource pool configuration information, the second node determines to determine the state of the resource pool according to at least one of the following decisions:

the number of time domain resource units contained in the resource pool;

the location of time domain resource units contained in the resource pool;

the number of frequency domain resource units contained in the resource pool;

the location of frequency domain resource units contained in the resource pool;

a traffic demand of the second node;

a number of nodes having wireless links with the second node;

a number of nodes that the second node communicates on associated links, the associated links being links that use resources in the resource pool for signal transmission;

a number of nodes communicating with the third node over the associated link;

traffic demand on the associated link;

an amount of load on the associated link;

channel measurements of the associated link;

state information of a resource pool of a neighboring node of the third node;

a measurement feedback report of the third node;

a resource request of the third node.

For example, the first node is configured with a resource pool a and a resource pool B as dedicated resource pools for the access link, and the number of time domain resource units included in the resource pool a is greater than that in the resource pool B, the second node may determine the states of the resource pool a and the resource pool B according to the UE load amount of the access link of the first node. Specifically, when the load capacity of the access link of the first node is low, the resource pool B is activated, and the resource pool a is placed in an inactive state; when the load capacity of an access link of a first node is high, a resource pool A is activated, and a resource pool B is placed in a non-activated state; when the capacity of the access link of the first node is very high, the resource pools a and B are activated, while using the resources in both resource pools for signaling of the access link.

In the embodiment of the present invention, what policy is specifically adopted by the second node to determine the state of the resource pool according to the information decision is not used to limit the protection scope of the embodiment of the present invention, and the specific policy is not limited in the embodiment of the present invention, and is not described here again.

When the second node determines the state of the resource pool according to the indication, the state information of the resource pool may indicate the state of any one or more resource pools.

state reversal information of the resource pool;

a status of the resource pool within a period;

a status of the resource pool;

a validity period of the state configuration of the resource pool;

identification information of the resource pool.

Wherein, the state of the resource pool in one period indicates that the indicated resource pool is set to be in an active state or an inactive state and is only valid in one period. The period refers to a period of the corresponding resource pool in a time domain, or an indication period of information indicating a state of the resource pool. The indication period of the information indicating the state in which the resource pool is located may be configured by the system or predefined. When the information indicating the state of the resource pool indicates that the state of the corresponding resource pool is the active state, it means that the resource pool is set to the active state in the current cycle or the next cycle, and vice versa.

the information of the status of the resource pool indicates that the status of the resource pool in k time domain units is active or inactive, for example, predefined time domain units are time slots, or subframes, or radio frames (frames).

When two or more resource pools are configured for the same node, the state information of the resource pools needs to further distinguish the resource pools corresponding to the indication, that is, the state information of the resource pools also includes identification information of the resource pools, and the resource pool information includes any one of the following:

When the resource pool is indicated by the resource pool index (index), the resource pools of the same node may define the corresponding resource pool index one by one in sequence, and the information indicating the state of the resource pool may indicate the state of the corresponding resource pool by the resource pool index and the configured state information.

The state configuration indication of one or more resource pools can be indicated in the state information of the resource pools received by the first node, and the corresponding state indication is distinguished through corresponding resource pool index numbers.

When the resource pool is indicated through the information of the mapping relation with the resource pool, the resource pool is indicated through the implicit index relation; the first node may determine, according to a predefined rule, a resource pool corresponding to the information indicating the state of the resource pool implicitly by receiving a resource used by the state information indicating the resource pool, or an RNTI, or a search space, or a time domain resource location, and thereby determine the state of the indicated resource pool.

In this embodiment of the present invention, the second node indicates resource pool configuration information, including:

the second node indicates resource pool configuration information by at least one of: high layer signaling, physical layer signaling, configuration signaling.

Wherein the higher layer signaling comprises at least one of: RRC message, MAC CE;

the physical layer signaling includes at least one of: DCI, UCI, backhaul link control information, SCI.

The second node may indicate the resource pool configuration information in a unicast or broadcast or multicast manner.

In another embodiment of the present invention, the method further comprises:

step 501, the second node schedules resources in the active resource pool and indicates the scheduled resources, which are used for transmission of signals on the associated link. The associated links include links that use resources in a resource pool for signaling.

In the embodiment of the present invention, the second node may schedule resources in the resource pool in the active state, and instruct the third node to perform signal transmission on the corresponding link, where the resources in the resource pool in the inactive state may not be used.

When the activated resource pool is a dedicated resource pool for a particular one of the radio links, the second node schedules resources in this resource pool for signal transmission between the nodes of the particular radio link.

The second node schedules resources in the resource pool in an active state, specifically, on the time domain resources and the frequency domain resources contained in the resource pool, the second node schedules and instructs a third node to use one or more time domain resource units and frequency domain resource units therein to transmit signals on a corresponding link.

The second node dynamically or semi-statically schedules resources in the resource pool in the activated state, and indicates the configuration indication of the scheduled resources through at least one of the following: high layer signaling, physical layer signaling.

In the embodiment of the present invention, the first node, the second node, the third node, and the fourth node may be any node, for example, any one of the following nodes: a network side entity, a base station, User Equipment (UE), a relay station, a node that performs any radio link communication, a resource management master node, and a resource pool state management master node.

The fourth node may be the second node, or another node, such as any one of the following: the system comprises adjacent base stations, adjacent relay stations, UE (user equipment) with a wireless link with a first node, a network layer entity, a resource management main node, a resource pool state management main node and the like.

The network side entity may include, but is not limited to, any of the following: a 5G system base station (gNB, or ng-eNB), an Evolved node b (eNB, Evolved NodeB), a relay station (RN), a cell coordination Entity (MCE), a Gateway (GW, Gateway), a Mobility Management Entity (MME), and an Operation Administration and Maintenance (OAM) manager.

In an embodiment of the invention, the transmission comprises at least one of: and (4) sending and receiving.

The resource pool configuration method in the embodiment of the present invention may be applied to different scenarios and requirements, and the following respectively illustrates that the resource pool configuration method in the embodiment of the present invention is applied to implement resource pool configuration of a backhaul link between base stations and resource pool configuration of an access link between a base station and a UE, as in example 1; and taking the first node as the UE as an example to describe the resource pool configuration for implementing the Sidelink communication between UEs by applying the resource pool configuration method of the embodiment of the present invention, as in example 2. It is to be appreciated by those skilled in the art that the solution presented in the embodiments of the invention is not limited to the above described application scenarios and requirements.

Example 1

In the 5G communication system, a base station is used as a network side device of a radio access network, and there are two types: gNB and ng-eNB. The two service interfaces provide different types of service interfaces for the UE, and can be connected with a 5G core network and realize data interaction with the core network. The two nodes can also be collectively referred to as NG Radio Access Network (NG-RAN) nodes, and an interface between base stations, that is, an interface between NG-RAN nodes is referred to as an Xn interface. In the example, the gNB is taken as an example for explanation, and any scheme of the embodiment of the present invention can be applied to the ng-eNB as well.

As shown in fig. 1, the gNB a is directly connected to the core network, and the UE a served under the gNB a is connected to the gNB a through an access link (access link), so that the UE a realizes information interaction with the core network through the gNB a. However, if the gNB B and the gNB C are not directly connected to the core network, the information of the UE B and the UE C to be served needs to be forwarded through a Backhaul link (Backhaul link) established with the gNBA, that is, the information is indirectly connected to the core network through the gNB a, so that information interaction between the UE and the core network to be served is realized. It can be seen that backhaul link connections are established between the gNB a and the gNB B, and to avoid signal interference between backhaul links, a resource pool may be configured for the backhaul link AB (a radio link between the gNB a and the gNB B) and the backhaul link AC (a radio link between the gNB a and the gNB C), respectively.

And (I), the gNB A acquires the resource pool configuration information of the backhaul link AB and the resource pool configuration information of the backhaul link AC from the network side, sends the resource pool configuration information of the backhaul link AB to the gNB B, and sends the resource pool configuration information of the backhaul link AC to the gNB C.

As shown in fig. 1, the gNB a has a direct connection with the core network, which may also be referred to as an anchor node (donor node), and obtains resource pool configuration information of the backhaul link from the core network, that is, obtains a resource configuration indication of the resource pool from a network side entity. The resource pool configuration information includes resource pool configuration information of the backhaul link AB and resource pool configuration information of the backhaul link AC. And the resource management functional entity of the core network indicates the resource pool configuration information to the gNB A through signaling.

And the gNB A receives the resource pool configuration information, and obtains a resource configuration indication of a resource pool of the backhaul link AB and a resource configuration indication of a resource pool of the backhaul link AC, wherein the network side configures the resource pool A and the resource pool B for the backhaul link AB, and configures the resource pool C and the resource pool D for the backhaul link AC.

The resource pool configuration information indicates the time domain resources and the frequency domain resources contained in each configured resource pool respectively. The resource pool has periodicity, and in the indicated period, the time domain resource indicates the number and the position of the configured slots by taking the slots as units; on the slots contained in the resource pool, each slot contains the same frequency domain resource, and the number and the position of the configured RB are indicated in the resource pool configuration information.

The resource pool a and the resource pool B are configured to have different periods, and there are partially overlapped slots in the time domain, and the resource pool C and the resource pool D are configured to have different periods, and the slots included in the resource pool C and the resource pool D are not overlapped at all, which may also be referred to as that the resource pool C and the resource pool D include orthogonal resources in the time domain, as shown in fig. 6.

And the gNB A acquires resource pool configuration information of the two backhaul links according to the resource pool configuration information, and the gNBA further configures the corresponding resource pool to the gNB B and the gNB C on the backhaul links through high-level signaling. Specifically, the gNB a indicates resource pool configuration of the backhaul link AB to the gNB, that is, resource pool configuration information of the resource pool a and the resource pool B; the gNBA indicates to the gNB C the resource pool configuration of the backhaul link AC, i.e. the resource pool configuration information of resource pool C and resource pool D. From the perspective of gNB and gNB C, the higher layer signaling is received from gNB a, and the resource pool configuration information of the backhaul link is obtained, where the resource pool configuration information indicates the period of the corresponding resource pool, the included time domain resource and frequency domain resource configuration.

And secondly, the gNB A configures the types of the time domain resource units in the resource pool A and the resource pool B, judges and determines the states of the resource pool A and the resource pool B, and indicates the types of the time domain resource units in the resource pool A and the resource pool B of the gNB B and the states of the resource pool A and the resource pool B.

Specifically, the gNB a indicates to the gNB the type of the time domain resource unit included in the resource pool a and the resource pool B, that is, the symbol indicating each slot in the resource pool is a DL symbol, an UL symbol, or an X symbol. As shown in fig. 7, gNB a indicates, through higher layer signaling, to gNB B, which is the configuration of symbol types on slots included in resource pools a and B. The configuration of the type of the time domain resource unit is semi-static configuration, and the reconfiguration is indicated by the gNB A through signaling.

Specifically, the gNB a determines the states of the resource pool a and the resource pool B according to the service requirement of the gNB B and a channel measurement report (i.e., a channel measurement result) of the backhaul link AB fed back to the gNB a by the gNB. Specifically, when the resource pool B can meet the service requirement on the backhaul link AB, the gNB a indicates that the resource pool B is in an active state and the resource pool a is in an inactive state; when the resource demand of the gNB B increases or the channel measurement result deteriorates, the gNB A indicates to the gNB B to activate the resource pool A, and simultaneously deactivates the resource pool B, that is, sets the resource pool B in an inactive state.

Further, according to the determination of the state of the resource pool, the gNB a indicates the determined states of the resource pool a and the resource pool B to the gNB B through the MAC CE. And the gNB A indicates the resource pool A to be set to be in an inactive state and the resource pool B to be set to be in an active state to the gNB B in the MAC CE. When the gNB a changes the configuration of the state in which the resource pool on the backhaul link AB is located, the corresponding state is reconfigured by the MACCE. And the gNB B receives the corresponding MAC CE indication from the gNB A, obtains the state information of the resource pools A and B, and transmits and receives the backhaul link signal with the gNB A by using the resource pool in the activated state.

And thirdly, the gNB C configures the types of the time domain resource units in the resource pool C and the resource pool D, and judges and determines the states of the resource pool C and the resource pool D.

Specifically, the gNB C determines the type of the corresponding time domain resource unit in the resource pool C and the resource pool D according to the service requirement of the backhaul link of the gNB C, as shown in fig. 8.

Specifically, the gNB C determines the state of the corresponding resource pool according to the service requirement of the gNB C on the backhaul link AC and the resource amount included in the resource pool C and the resource pool D. Specifically, when the resource pool D can meet the service requirement on the backhaul link AC, the gNB C determines to use the resource pool D, that is, sets the resource pool D in an active state, and sets the resource pool C in an inactive state; when the traffic demand on the backhaul link AC increases, the gNB C further activates the resource pool C, i.e. uses both resource pool C and resource pool D for backhaul link information transmission with the gNB a.

Further, the gNB C indicates the decided states of the resource pool C and the resource pool D to the gNB a through the UCI. And the gNB C indicates the resource pool C to be set to be in an inactive state and the resource pool D to be set to be in an active state to the gNB A in the UCI. When the gNB C changes the configuration of the state of the resource pool on the backhaul link AC, the change of the state of the corresponding resource pool is updated to the gNB A through the UCI. And the gNB A receives corresponding UCI feedback from the gNB C, obtains the state information of the resource pool C and the resource pool D, and transmits and receives the backhaul link signals with the gNB C by using the resource pool in the activated state.

And (IV) the network side judges and determines the state of the resource pool, the resource management main node indicates the state of the resource pool to gNB A, and the gNB A indicates the state of the resource pool to gNB B and gNB C.

Specifically, the network side (e.g., the resource management master node) configures an initial state of the resource pool in the resource pool configuration information. And setting the resource pool B and the resource pool D to be in an activated state, and setting the resource pool A and the resource pool C to be in an inactivated state.

Further, according to the service requirement information fed back to the resource management master node by the gNB a, the network side may perform configuration adjustment on the state of the corresponding resource pool. And the resource management main node indicates the update of the state of the resource pool to the gNB A and indicates the update of the state of the resource pool by using the resource pool state turnover information. In the resource pool configuration information received by the gNB a, the resource pool B, the resource pool C, and the resource pool D may be numbered as resource pools index #0, #1, #2, #3, respectively, in order, and the resource management master node indicates to the gNB a that the states of the resource pools index #0, #3 are reversed. And the gNB A sets the resource pool A to be in an activated state and the resource pool D to be in an inactivated state according to the received resource pool configuration information.

Further, the gNB A indicates to the gNB B through high-level signaling that the status of the resource pool A is updated to the activated status, and indicates to the gNB C that the resource pool D is deactivated.

And (V), the gNB A indicates the state of the resource pool in one period to the gNB B and the gNB C by adopting physical layer DCI signaling.

In the DCI signaling, the gNB a indicates the corresponding resource pool index and the state of the resource pool in one period to the gNB B, for example, the resource pool index #0 is indicated to correspond to the resource pool a, the state of the resource pool in one period is an active state, the index #1 corresponds to the resource pool B, and the state of the resource pool in one period is an inactive state. As shown in fig. 9, after receiving the DCI indication, the gNB obtains the state of the resource pool in one period, and sets the resource pool a in an active state and the resource pool B in an inactive state according to the state indication in the next resource pool period. Then, in the DCI received by the gNB, the resource pool B configuration is indicated as the active state, and the resource pool B is set as the active state in the next resource pool B period. The cycle start positions of resource pool a and resource pool B may be different. When the DCI indicates the state configurations of the multiple resource pools, the resource pool index and the state configurations of the corresponding resource pools may be indicated in the same DCI, or the state configurations of the multiple resource pools may be indicated one by using multiple DCIs, respectively.

And (VI), the gNB A judges the state of the resource pool on the backhaul link AB and indicates the state configuration of the resource pool to the gNB B. Further, on backhaul link AB, gNB a uses resources in the active resource pool to schedule resources for information transmission of the backhaul link between gNB a and gNB.

When the resource pool in the active state on the backhaul link AB is the resource pool a, the gNB a schedules downlink transmission for the backhaul link AB on the downlink resource of the resource pool a, that is, a resource required by a signal sent from the gNB a to the gNB. And the gNB A indicates the scheduled backhaul link downlink resource to the gNB B in the DCI, and carries backhaul link information on the indicated resource and sends the backhaul link information to the gNB B. Accordingly, the gNB obtains status information of the resource pool from the gNB a, and detects a backhaul link signal of the received gNB a on a resource in the active status resource pool. And the gNB B receives the scheduling indication DCI of the gNB A from the downlink slot of the resource pool A in a blind detection mode, further obtains the scheduled backhaul link downlink resource from the DCI, receives the downlink signal of the gNB A on the corresponding resource according to the scheduling indication, and obtains the backhaul link data information from the downlink resource.

In addition, the gNB a may further indicate, in the DCI, to the gNB B the uplink resource of the backhaul link scheduled in the active resource pool, and instruct the gNB B to carry uplink information of the backhaul link on the indicated uplink resource, and send the uplink information to the gNB a. Correspondingly, the gNB receives the DCI for scheduling indication of the gNBA from the downlink slot of the resource pool a through blind detection, further obtains the uplink resource of the scheduled backhaul link from the DCI, and transmits an uplink signal to the gNB a on the corresponding uplink resource according to the scheduling indication. The gNB A detects the uplink signal of the received gNB B on the indicated uplink resource, and obtains the backhaul uplink data information therefrom.

And seventhly, the gNB C obtains resource pool configuration information from the gNB A, wherein the resource contained in the resource pool of the access link of the gNB C is indicated by configuration, and the configured resource pool E is indicated to be in an activated state in the configuration information. According to the resource pool configuration information, the gNB C uses the resources in the resource pool E to provide the cellular network communication service for the UE on the access link.

And on the resource pool E, the gNB C schedules downlink resources and uplink resources for the UE. The gNBC schedules downlink transmission for the UE on the downlink resource of the resource pool E, i.e. the resource required for the gNB C to send a signal to the UE. And the gNB C indicates the downlink resource of the scheduled access link to the UE in the DCI, and carries the control and data information related to the UE on the indicated downlink resource and sends the control and data information to the UE. Correspondingly, the UE receives the DCI for the scheduling indication of the gNB C in a blind test, obtains the scheduled downlink resource from the DCI, receives the signal of the gNB C on the corresponding downlink resource according to the scheduling indication, and obtains the data information from the signal.

In addition, the gNB C may also schedule and indicate uplink resources for the UE through the DCI, and request the UE to carry control or data information uplink on the indicated uplink resources and send the uplink information to the gNB C. Correspondingly, the UE blind-checks that the scheduling indication DCI of the gNB C is received, obtains the uplink resource of the scheduled access link from the DCI, and sends the uplink signal to the gNB C on the corresponding uplink resource according to the scheduling indication. And the gNB C detects the uplink signal of the received UE on the indicated uplink resource, and obtains the data information or the feedback information of the UE from the uplink signal.

Example 2

In the Sidelink communication system, the UEs use the Sidelink resources to transmit information, and the Sidelink communication method includes Device-to-Device (D2D, Device-to-Device) communication, Vehicle-to-Vehicle (V2V, Vehicle-to-Vehicle) communication, and the like according to specific application scenarios, service types, and the like.

In the related art Sidelink communication method, the UE transmits a Sidelink signal using a resource in a Sidelink resource pool (Sidelink resource pool). Specifically, the side link resource pool includes multiple types:

a Physical Sidelink Control Channel (PSCCH) resource pool for carrying Sidelink Control information;

a Physical Sidelink Shared Channel (psch) resource pool for carrying Sidelink data service information;

a Physical Sidelink Broadcast Channel (PSBCH) resource pool for carrying the Sidelink Broadcast information;

a Physical Sidelink Discovery Channel (PSDCH) resource pool for carrying a Sidelink Discovery signal.

According to specific scene requirements, a network side configures a Sidelink resource pool for Sidelink UE, or a system configures the Sidelink resource pool, and the UE uses resources in the Sidelink resource pool to carry Sidelink information and sends the Sidelink information. At least one of the above-mentioned multiple types of scelink resource pools may be configured for the scelink UE in a predefined configuration on the network side or in a predefined configuration of the system.

Specifically, the PSCCH resource pool, the PSBCH resource pool, and the PSDCH resource pool are all one of the sildelink resource pools, and the configuration indication manner for the resource pools in the embodiment of the present invention may be applied to any one or more of the above resource pool configurations.

When the resources of the Sidelink resource pool and the cellular communication share the time domain resources and the frequency domain resources, the resources need to be configured based on the existing time domain resources and frequency domain resources in the cellular communication. For example, the time domain resources in the Sidelink resource pool are further configured on the basis of the indicated symbol and slot division of the cellular communication and the type of the symbol.

Since the UE can simultaneously maintain cellular communication and Sidelink communication, the configuration of the Sidelink resource pool needs to avoid the conflict with the cellular communication resource as much as possible, that is, the time domain resource and the frequency domain resource included in the Sidelink resource pool should not affect the resource configuration of the cellular communication as much as possible. In a 5G system, a UE performing cellular communication in a cell may determine a symbol type of each symbol in each slot in a time domain by receiving a corresponding configuration signaling of a network side node (e.g., a base station). Further, according to the scheduling indication of the base station, the UE receives or transmits signals using symbols of the corresponding symbol type.

Since the signal of the sildelink communication is sent by the UE and received by other surrounding UEs supporting the sildelink communication, in order to avoid interference from the cellular downlink signal, UL symbol and/or flexiplessymbol should be used in the sildelink resource pool, and DL symbol is not used. Here, the UL symbol or the Flexible symbol referred to herein refers to a UL symbol or a Flexible symbol allocated to a base station in cellular communication.

Further, since the configuration of the scellink resource pool cannot conflict with the resource configuration of the cellular network user, in the configuration of the scellink resource pool, the indicated resource for the scellink communication at least does not include a time domain resource configured by the cellular communication as DL symbol in a time domain, that is, the time domain resource indicated in the scellink resource pool includes at least one of the following: UL slot, UL symbol, Flexible slot, Flexible symbol.

Next, a specific implementation of the embodiment of the present invention applied to the Sidelink communication will be described.

And (I) the system pre-configures a resource pool.

As shown in fig. 2, the UE performs data communication directly with other surrounding UEs through Sidelink. The sildelink resource pool is preconfigured by the system. And the UE obtains the resource configuration indication of one or more than one resource pools on the Sidelink according to the pre-configured Sidelink resource pool configuration information.

The sildelink resource pool configuration information indicates time domain resources and frequency domain resources contained in each configured resource pool, and specifically includes a PSCCH resource pool and a corresponding PSCCH resource pool. The configured resource pool has periodicity, and in one period of the resource pool, the time domain resource takes the slot as a unit and indicates the number and the position of the configured slot; on the slots contained in the resource pool, each slot contains the same frequency domain resource, and the number and the position of the configured RB are indicated in the configuration information.

The configured PSCCH resource pool and the PSCCH resource pool have the same period, and the time domains respectively include different slots, as shown in fig. 10.

(ii) when the sildelink resource pool is configured by the base station, the sildelink resource pool may share resources with cellular communications. And at the moment, the Sidelink resource pool is configured and managed by the base station, and the base station judges the state of the Sidelink resource pool and configures an indication.

Specifically, the base station determines the state of the corresponding resource pool according to the service requirement of the sildelink, the measurement result of the sildelink fed back by the UE, and other factors. The UE on the Silelink can be divided into a plurality of groups, the base station indicates the UE in the Silelink UE group A to use the PSCCH/PSSCH resource pool A through high-level signaling, namely indicates that the corresponding resource pool is in an activated state, indicates the UE in the Silelink UE group B to use the PSCCH/PSSCH resource pool A in an inactivated state, and simultaneously indicates the PSCCH/PSSCH resource pool B in an activated state, namely configures the resource in the resource pool B for the Silelink communication by the Silelink UE group B.

And thirdly, the base station configures a dedicated Sildelink resource pool for the UE A, and the UE A determines the state of the configured resource pool and feeds back the state to the base station.

In the Sidelink communication, the UE a may act as a relay node according to the configuration to provide relay service for other Sidelink UEs around. UE A obtains the configuration information of the dedicated Sidelink resource pool from the base station, wherein the dedicated relay resource pool F and the resource pool G configured for the UE A are indicated and used for bearing communication signals between the UE A and the Sidelink UE.

The base station configures a plurality of special Sidelink resource pools for the UE A, and the UE A determines the state of the corresponding resource pools according to the number of the served Sidelink UEs. The resource pool F contains fewer time domain resources and frequency domain resources, and the resource pool G contains more time domain resources and frequency domain resources.

Specifically, the UE a determines the state of the corresponding resource pool according to the number of the Sidelink UEs connected and the resource amount included in the resource pool F and the resource pool G. Specifically, when the resource pool F can meet the service requirement of the Sidelink UE relay service, the UE a determines to use the resource pool F, that is, sets the resource pool F to an activated state, and sets the resource pool G to an inactivated state; when the number of the Sidelink UE connected with the UE A increases, the UE A activates the resource pool G and simultaneously deactivates the resource pool F, and the resources in the resource pool G are used for providing services for the Sidelink UE.

Further, the UE a feeds back the determined states of the resource pool F and the resource pool G to the base station through a high-level signaling. UE A reports to the base station that the configured resource pool F is set to be in an activated state, and the resource pool G is set to be in an inactivated state. When the UE A changes the setting of the resource pool state, the change of the corresponding resource pool state is updated to the base station through the signaling. The base station receives corresponding high-level signaling feedback from the UE A, and obtains the state information of the resource pool F and the resource pool G.

And (IV) the state of the resource pool is judged by the base station and indicates the Sidelink UE.

Specifically, after determining the status of the Sidelink resource pool, the base station broadcasts information indicating the status of the resource pool to the Sidelink UE through a system broadcast message.

For the Sidelink common resource pool, the base station indicates that the status is active status or inactive status in the broadcast message. The Sidelink UE receives the broadcast message from the base station, and obtains the state information of the Sidelink resource pool from the broadcast message.

For the dedicated resource pool of the Sidelink UE group, the base station indicates the state information of the resource pool through a group broadcast message or UE dedicated high-level signaling.

On the resource pool indicated as active by the base station, the UE may use the resources in the resource pool to transmit or receive the Sidelink signal.

And fifthly, on the resource pool in the activated state indicated by the base station, the Sidelink UE can compete to select resources in the resource pool for sending the Sidelink signal, and meanwhile, the UE monitors and detects Sidelink signals of other UEs in the resource pool in the activated state to realize Sidelink communication.

When the Sidelink resource pool K is in an activated state, the UE a has Sidelink information to send, and then the UE a selects a resource without conflict or a resource with better channel condition on the resource pool K through competition, and carries and sends the Sidelink information on the selected resource. On the resource pool K, the UE monitors and receives the resources in the resource pool K, detects and receives signals from other Sidelink UEs, and obtains Sidelink information from the signals.

For the sildelink resource pool in the inactive state, the UE a cannot contend for the selected resource to send the sildelink information, and the sildelink UE does not monitor and receive the resource pool in the inactive state and does not attempt to obtain the sildelink signal therefrom.

In general, the above-described methods of the embodiments of the present invention may be combined without conflict.

Referring to fig. 11, another embodiment of the present invention provides a resource pool configuration apparatus (e.g., a first node), including:

an obtaining module 1101, configured to obtain resource pool configuration information, where the resource pool configuration information includes at least one of the following: resource configuration indication of a resource pool and state information of the resource pool, wherein the state of the resource pool is an activated state or an inactivated state;

a first determining module 1102, configured to determine a status of the resource pool.

In another embodiment of the present invention, the method further comprises:

a first scheduling module 1103, configured to schedule or select a resource in a resource pool in an active state, where the scheduled or selected resource is used for transmission of signals on an associated link, and the associated link includes a link using the resource in the resource pool for signal transmission.

In another embodiment of the present invention, the first determining module 1102 is further configured to:

and sending the state of the resource pool to a fourth node.

In this embodiment of the present invention, the obtaining module 1101 is specifically configured to obtain the resource pool configuration information by using at least one of the following manners:

acquiring the resource pool configuration information according to the pre-configuration information;

and obtaining the resource pool configuration information according to the indication.

a period of the resource pool;

the type of time domain resource unit in the resource pool;

a status of the resource pool.

In the embodiment of the present invention, the type of the time domain resource unit includes any one of the following: downlink resources, uplink resources, flexible resources.

In this embodiment of the present invention, the first determining module 1102 is specifically configured to determine the state of the resource pool by using at least one of the following manners:

judging and determining the state of the resource pool;

determining the state of the resource pool according to the pre-configured state information of the resource pool;

and determining the state of the resource pool according to the indicated resource pool state information.

In this embodiment of the present invention, the first determining module 1102 is specifically configured to implement, in a manner that:

the number of time domain resource units contained in the resource pool;

the location of time domain resource units contained in the resource pool;

the number of frequency domain resource units contained in the resource pool;

the location of frequency domain resource units contained in the resource pool;

a traffic demand of the first node;

a number of nodes having wireless links with the first node;

a number of nodes that the first node communicates on associated links, the associated links including links that use resources in the resource pool for signaling;

traffic demand on the associated link;

an amount of load on the associated link;

channel measurements of the associated link.

state reversal information of the resource pool;

a status of the resource pool within a period;

a status of the resource pool;

a validity period of the state configuration of the resource pool;

identification information of the resource pool.

In this embodiment of the present invention, the first determining module 1102 is further configured to:

and determining the resource pool corresponding to the state information of the resource pool according to an index relationship, wherein the index relationship comprises the one-to-one correspondence relationship between the state information of the resource pool and the resource pool.

Referring to fig. 12, another embodiment of the present invention provides a resource pool configuration apparatus (e.g., a second node), including:

a second determining module 1201, configured to determine resource pool configuration information, where the resource pool configuration information includes at least one of the following: resource configuration indication of a resource pool and state information of the resource pool, wherein the state of the resource pool is an activated state or an inactivated state;

an indicating module 1202, configured to indicate resource pool configuration information.

In another embodiment of the present invention, the method further comprises:

a second scheduling module 1203, configured to schedule resources in the resource pool in the active state and indicate the scheduled resources, where the scheduled resources are used for transmission of signals on associated links, and the associated links include links using resources in the resource pool for signal transmission.

In another embodiment of the present invention, the second determining module 1201 is specifically configured to determine the resource pool configuration information by using at least one of the following methods:

configuring, namely determining the resource pool configuration information;

determining the resource pool configuration information according to the indication;

and determining the resource pool configuration information according to the pre-configuration information.

In this embodiment of the present invention, the second determining module 1201 is specifically configured to implement configuration in the following manner, and determine the resource pool configuration information:

deciding to determine a state of the resource pool based on at least one of:

the number of time domain resource units contained in the resource pool;

the location of time domain resource units contained in the resource pool;

the number of frequency domain resource units contained in the resource pool;

the location of frequency domain resource units contained in the resource pool;

a traffic demand of the second node;

a number of nodes having wireless links with the second node;

a number of nodes communicating with the third node over the associated link;

traffic demand on the associated link;

an amount of load on the associated link;

channel measurements of the associated link;

state information of a resource pool of a neighboring node of the third node;

a measurement feedback report of the third node;

a resource request of the third node.

a period of the resource pool;

the type of time domain resource unit in the resource pool;

a status of the resource pool.

In this embodiment of the present invention, the second determining module 1201 is specifically configured to implement the indicating of the resource pool configuration information by using the following manner:

indicating the resource pool configuration information by at least one of: high-layer signaling, physical layer signaling and configuration signaling; wherein the content of the first and second substances,

state reversal information of the resource pool;

the state of the resource pool in one period;

a status of the resource pool;

a validity period of the state configuration of the resource pool;

identification information of the resource pool.

In this embodiment of the present invention, the second determining module 1201 is further configured to:

and indicating the state information of the resource pool corresponding to the resource pool according to an index relationship, wherein the index relationship comprises the one-to-one correspondence relationship between the resource pool state information and the resource pool.

The specific implementation processes of the first node and the second node are the same as those in the foregoing embodiment, and are not described again here.

Another embodiment of the present invention provides a resource pool configuration apparatus, including a processor and a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed by the processor, the resource pool configuration apparatus implements any one of the resource pool configuration methods described above.

Another embodiment of the present invention proposes a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of any of the above-mentioned resource pool configuration methods.

Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer.

Referring to fig. 13, another embodiment of the present invention provides a resource pool configuration system, including:

the first node 1301 is configured to obtain resource pool configuration information, where the resource pool configuration information includes at least one of the following: resource configuration indication of a resource pool, and state information of the resource pool; determining the state of the resource pool, wherein the state of the resource pool is an activated state or an inactivated state;

the second node 1302 is configured to determine and indicate resource pool configuration information, where the first resource pool configuration information includes at least one of the following: resource configuration indication of a resource pool, status information of the resource pool.

In another embodiment of the present invention, the first node 1301 is further configured to:

sending the state of the resource pool to a fourth node;

the resource pool configuration system further comprises: and a fourth node 1303 configured to receive the status of the resource pool.

scheduling or contending for a selected resource in a resource pool in an active state, the scheduled or selected resource for transmission of signals on associated links, the associated links including links for signal transmission using resources in the resource pool;

the second node 1202 is further configured to:

and scheduling resources in the resource pool in the active state and indicating the scheduled resources.

The specific implementation process of the resource pool configuration system is the same as that in the foregoing embodiment, and is not described here again.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and they may alternatively be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, or fabricated separately as individual integrated circuit modules, or fabricated as a single integrated circuit module from multiple modules or steps. Thus, the present invention is not limited to any specific combination of hardware and software.

Although the embodiments of the present invention have been described above, the descriptions are only used for understanding the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the embodiments of the invention as defined by the appended claims.

Claims

1. A resource pool configuration method comprises the following steps:

2. The method of claim 1, further comprising:

3. The method according to claim 1 or 2, characterized in that the method further comprises:

and the first node sends the state of the resource pool to a fourth node.

4. The method according to claim 1 or 2, wherein the first node obtaining resource pool configuration information comprises at least one of:

5. The method according to claim 1 or 2, wherein the resource pool configuration information comprises at least one of:

a period of the resource pool;

the type of time domain resource unit in the resource pool;

a status of the resource pool.

6. The method of claim 5, wherein the type of the time domain resource unit comprises any one of: downlink resources, uplink resources, flexible resources.

7. The method of claim 1, wherein the first node determining the state of the resource pool comprises at least one of:

the first node judges and determines the state of the resource pool;

8. The method of claim 7, wherein the first node deciding to determine the state of the resource pool comprises:

the number of time domain resource units contained in the resource pool;

the location of time domain resource units contained in the resource pool;

the number of frequency domain resource units contained in the resource pool;

the location of frequency domain resource units contained in the resource pool;

a traffic demand of the first node;

a number of nodes having wireless links with the first node;

a number of nodes that the first node communicates on the associated link;

traffic demand on the associated link;

an amount of load on the associated link;

channel measurements of the associated link.

9. The method according to claim 1 or 7, wherein the status information of the resource pool comprises at least one of:

state reversal information of the resource pool;

a status of the resource pool within a period;

a status of the resource pool;

a validity period of the state configuration of the resource pool;

identification information of the resource pool.

10. The method of claim 7, wherein the first node determines the status of the resource pool based on the indicated resource pool status information, further comprising:

11. A resource pool configuration method comprises the following steps:

12. The method of claim 11, further comprising:

13. The method of claim 11, wherein the second node determines the resource pool configuration information, comprising at least one of:

14. The method of claim 13, wherein the second node configures, and wherein determining the resource pool configuration information comprises:

the number of time domain resource units contained in the resource pool;

the location of time domain resource units contained in the resource pool;

the number of frequency domain resource units contained in the resource pool;

the location of frequency domain resource units contained in the resource pool;

a traffic demand of the second node;

a number of nodes having wireless links with the second node;

a number of nodes that the second node communicates on the associated link;

a number of nodes communicating with the third node over the associated link;

traffic demand on the associated link;

an amount of load on the associated link;

channel measurements of the associated link;

state information of a resource pool of a neighboring node of the third node;

a measurement feedback report of the third node;

a resource request of the third node.

15. The method of claim 11, wherein the resource pool configuration information comprises at least one of:

a period of the resource pool;

the type of time domain resource unit in the resource pool;

a status of the resource pool.

16. The method of claim 15, wherein the type of the time domain resource unit comprises any one of: downlink resources, uplink resources, flexible resources.

17. The method of claim 11, wherein the second node indicating the resource pool configuration information comprises:

18. The method of claim 11, wherein the status information of the resource pool comprises at least one of:

state reversal information of the resource pool;

the state of the resource pool in one period;

a status of the resource pool;

a validity period of the state configuration of the resource pool;

identification information of the resource pool.

19. The method of claim 11, wherein the second node indicates status information of the resource pool, comprising:

20. A resource pool configuration apparatus, comprising:

a first determining module to determine a status of the resource pool.

21. A resource pool configuration apparatus, comprising:

22. A resource pool configuration apparatus comprising a processor and a computer-readable storage medium having instructions stored thereon, wherein the instructions, when executed by the processor, implement the resource pool configuration method according to any one of claims 1 to 19.

23. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the resource pool configuration method according to any one of claims 1 to 19.

24. A resource pool configuration system, comprising: