CN106162894B

CN106162894B - A kind of resource allocation methods and equipment

Info

Publication number: CN106162894B
Application number: CN201510185562.2A
Authority: CN
Inventors: 冯媛; 郭宣羽; 唐纪晔; 周海军; 房家奕
Original assignee: Datang Telecom Technology Industry Holding Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2015-04-17
Filing date: 2015-04-17
Publication date: 2019-08-30
Anticipated expiration: 2035-04-17
Also published as: CN106162894A

Abstract

The embodiment of the invention provides a kind of resource allocation methods and equipment, to solve the problems, such as the reliable communication between net node and off-grid node.The resource allocation methods include: that base station is determining in net node needs and after off-grid node carries out resource coordination around it of the fringe region in own coverage area, receive the sub-frame resources demand information reported in net node；If report sub-frame resources demand information in the fringe region that net node is located at own coverage area, then base station is from addition to the sub-frame resources that may be collided and being not allocated in whole sub-frame resources and other select at least one sub-frame resources in the sub-frame resources of net node, wherein, the sub-frame resources that may be collided are simultaneously by the sub-frame resources used in net node in off-grid node and own coverage area；At least one sub-frame resources of selection are handed down to report sub-frame resources demand information in net node.

Description

Resource allocation method and equipment

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a resource allocation method and device.

Background

The traffic in the car networking system can be divided into three major categories: road safety, traffic efficiency, information entertainment. The road safety service is the most important and typical service in the car networking system. The road safety application relates to life safety, and is a new high-priority service which requires that low-delay and high-reliability communication requirements are guaranteed between vehicle nodes with application requirements in any scene.

In an LTE (Long Term Evolution) D2D (Device to Device) communication system, direct D2D communication is allowed between devices and devices in close proximity to each other. For ease of description, a link for direct communication between D2D UEs (User Equipment) is defined as a D2D link, and a cellular communication link between a Network and a D2D terminal is defined as a D2N (Device to Network) link. A schematic diagram of D2D communication is shown in fig. 1.

The scenarios of possible occurrences of cellular D2D communication shown in fig. 1 mainly include scenario 1 as shown in fig. 2, scenario 2 as shown in fig. 3, and scenario 3 as shown in fig. 4, where:

scenario 1 is a partial network coverage scenario: the node UE2 under non-cellular network coverage communicates with the node UE1 under cellular network coverage through D2D;

scene 2 is an in-coverage scene: D2D communication between intra-cell node UE1 and node UE 2;

scene 3 is an in-coverage scene: D2D communication between the intra-cell node UE1 and the neighboring intra-cell node UE 2;

in scenarios 2 and 3, both the node UE1 and the node UE2 are under network coverage, that is, both are at a network node, the existing D2D communication scheme can ensure low-delay and highly reliable communication between nodes with application requirements, while scenario 1 can be regarded as the fusion of a cellular D2D scheme and a D2D scheme without cellular coverage, and the node UE1 is under cellular network coverage and is at a network node; the node UE2 is not under the coverage of the cellular network and is a off-network node.

For communication between the off-line nodes, an ad-hoc approach may be employed. For communication between network nodes, the cellular D2D resource allocation scheme with cellular participation in existing cells has mainly the following branches: 1) under the participation of a base station, a node is accessed in a self-organizing way to obtain subframe resources mainly; 2) under the centralized scheduling of a base station, planning and dividing subframe resources based on the geographic position; 3) and under the centralized scheduling mode of the base station, allocating the subframe resources according to the interference reported by the nodes.

For 1): the base station participates in information security processing, the security information is sent to each node by using broadcast service, each node still obtains subframe resources in a self-organizing mode, and compared with the existing self-organizing scheme (SU-ALOHA), the information transmitted between the nodes is reduced due to the fact that the base station participates in the information security processing. In addition, the sub-frame resources can be frequency division multiplexed among the nodes.

For 2): the base station determines the resource multiplexing distance according to the channel condition information; and planning the geographical position of the cell according to the resource multiplexing distance, dividing the cell into different areas, wherein the different areas have a determined resource use relationship (multiplexing or non-multiplexing), collision among the subframe resources used by each node is avoided as much as possible through subframe resource information in the areas, and the node only needs to send a D2D message on the subframe resources allocated to the node by the base station without channel detection interference reporting and the like.

For 3): the base station allocates initial subframe resources for the nodes according to the position information of the nodes, but the nodes need to perform channel detection at the same time and report interference conditions to the base station, the base station determines the subframe resources with collision according to the interference reported by the nodes and adjusts the subframe resources for the nodes with collision (the nodes using the subframe resources with collision).

The three resource allocation schemes solve the problem of reliable communication between the network nodes, however, since the cellular network still cannot achieve seamless full coverage, the problem of reliable communication between the network nodes and the off-line nodes needs to be solved, so as to meet the requirement of low-delay and high-reliability communication between the nodes with application requirements in any scene of the vehicle networking.

Disclosure of Invention

The embodiment of the invention provides a resource allocation method and equipment, which are used for solving the problem of reliable communication between a network node and a network-disconnected node.

Based on the above problem, a method and device for resource allocation provided by the embodiments of the present invention include:

in a first aspect, a method for resource allocation includes:

after determining that a network node in an edge area of a self-coverage area needs to perform resource coordination with peripheral off-line nodes, a base station receives subframe resource demand information reported by the network node, wherein the off-line nodes are not under the coverage of a cellular network;

if the network node reporting the subframe resource demand information is located in the edge area of the coverage area of the network node, the base station selects at least one subframe resource from all subframe resources except the subframe resource which is possibly collided and is not allocated to other network nodes, wherein the subframe resource which is possibly collided is the subframe resource used by the off-line node and the network node in the coverage area of the network node;

and sending the selected at least one subframe resource to the network node reporting the subframe resource requirement information.

Preferably, the subframe resource which is likely to be collided is a subframe resource in a offline cooperative resource pool;

the subframe resources in the offline cooperative resource pool and the subframe resources in the online cooperative resource pool used by the offline node are part of all the subframe resources which can be allocated by the base station, and the subframe resources in the offline cooperative resource pool and the subframe resources in the online cooperative resource pool are orthogonal.

In the scheme of the first aspect, after determining that the network node in the edge area of the self-coverage area needs to perform resource coordination with the network nodes around the network node, the base station allocates the subframe resources allocated to the network node in the edge area of the self-coverage area to the subframe resources which are not allocated to other network nodes except the subframe resources which may collide among all the subframe resources, and the subframe resources which may collide are the subframe resources used by the network node in the self-coverage area and the network nodes simultaneously, so that the subframe resources used by the network node and the network nodes in the edge area of the self-coverage area are ensured not to collide, and further the reliability of communication between the subsequent network nodes and the network nodes is ensured.

Preferably, the base station determines the subframe resource which may be collided in any one or all of two ways:

the first method is as follows:

receiving interference indication information which is reported by a network node and carries the interfered subframe resource information;

determining that the subframe resource which generates interference is occupied by the network node in the coverage area of the subframe resource which generates interference, and the subframe resource which generates interference is the subframe resource which is multiplexed by the off-line node;

determining the subframe resource with the interference as the subframe resource with the possibility of collision;

the second method comprises the following steps:

predicting the potential off-line on-line nodes in the coverage area of the node; and are

Determining a network-on node that has taken off-line from its coverage area;

and determining the predicted subframe resources used by the potential off-line network node and the subframe resources used by the network node which is determined to be off-line as the subframe resources which are possibly collided.

Preferably, the potential off-net in the self-coverage area is predicted by the following method:

and predicting that the network node is a potential off-network node according to one or more of the timing advance TA sent to the network node, the geographical location information reported by the network node and a measurement result obtained by measuring a link channel from the equipment of the network node to the network D2N.

Preferably, the mesh-on node which is off-line in the coverage area is determined by the following method:

and for each network-connected node predicted to be potentially disconnected, if the information sent by the network-connected node predicted to be potentially disconnected is not received within a first set time period, determining that the network-connected node predicted to be potentially disconnected is the network-connected node which is already disconnected in the coverage area of the network-connected node.

Preferably, the method further comprises:

and if the offline duration of the offline online node exceeds a second set duration, removing the subframe resources used by the offline online node from the determined subframe resources which are possibly collided.

Preferably, the method further comprises:

receiving information of off-line nodes around the network node reported by the network node;

the base station determines that a network node in the edge area of the coverage area of the base station needs to perform resource coordination with a network node around the network node, and the method comprises the following steps:

and if the time between the time of the last receiving of the information of the off-line nodes around the network node and the current time is not longer than the third set time, determining that the on-network node in the edge area of the coverage area of the on-network node needs to perform resource coordination with the off-line nodes around the on-network node.

Preferably, the receiving the subframe resource requirement information reported by the network node includes:

receiving the subframe resource information currently occupied, which is reported in the process that a network node is switched from a previous off-line node to the network node to perform network access;

or

And receiving resource allocation request information reported when the network node enters the edge area of the coverage area of the base station from the central area of the coverage area of the base station.

In a second aspect, a method for resource allocation includes:

if the network node in the edge area of the coverage area of the base station needs to perform resource coordination with the off-line nodes around the network node, reporting subframe resource demand information to the base station at the network node, wherein the off-line nodes are not under the coverage of the cellular network;

receiving and using at least one subframe resource issued by a base station after the network node is determined to be located in the edge area of the coverage area of the network node at the network node;

the subframe resources are selected by the base station from all the subframe resources except the subframe resources which are possibly collided and are not allocated to other network nodes, and the subframe resources which are possibly collided are the subframe resources used by the off-line node and the network nodes in the coverage area of the base station at the same time.

In the scheme of the second aspect, after the network node receives the subframe resources which are selected from the subframe resources which are not allocated to other network nodes except the subframe resources which may be collided among all the subframe resources and are used by the off-line node and the network node in the coverage area of the base station after the base station determines that the network node is located in the edge area of the coverage area of the network node, the subframe resources which are used by the off-line node and the network node in the coverage area of the base station at the same time are not collided, so that the subframe resources which are used by the network node and the off-line node in the edge area of the coverage area of the base station are ensured, and the reliability of communication between the off-line node and the network node is ensured subsequently.

Preferably, the method further comprises:

determining that offline nodes exist around;

and reporting the information of the off-network nodes around the base station.

Preferably, the determining that the offline nodes exist around comprises:

and if the first pilot frequency code is monitored, determining that the off-line nodes exist around, wherein the off-line nodes use the first pilot frequency code for communication, and the network nodes use the second pilot frequency code for communication.

Preferably, the reporting of the subframe resource requirement information to the base station at the network node includes:

when the network node is changed from the off-network node to the on-network node, the original time slot resource is continuously used, and the currently occupied subframe resource information is reported to the base station in the network access process;

or

When the network node is changed from the off-network node to the on-network node, releasing the original time slot resource, and reporting the currently occupied subframe resource information to the base station in the network access process;

or

And reporting the resource allocation request information to the base station by the network node from the central area of the coverage area of the base station to the edge area of the coverage area of the base station.

In a third aspect, a method for resource allocation includes:

determining that the off-line node needs to perform resource coordination with the on-line node, wherein the off-line node is not under the coverage of the cellular network;

and the off-line node selects and uses at least one subframe resource from all the subframe resources except the determined subframe resource which is possibly collided and is not allocated to other subframe resources at the network node, wherein the subframe resource which is possibly collided is the subframe resource used by the off-line node and the network node at the same time.

In the scheme of the third aspect, after determining that the off-network node needs to perform resource coordination with the network node, the off-network node selects and uses at least one subframe resource from all subframe resources except the determined subframe resource which is likely to collide and is not allocated to other subframe resources at the network node, wherein the subframe resource which is likely to collide is a subframe resource used by both the off-network node and the network node. This ensures that the subframe resources used by the off-network node do not collide with the subframe resources used at the network node, thereby ensuring the reliability of the subsequent communication between the off-network node and the network node.

Preferably, the subframe resource which is likely to collide is a subframe resource in a offline cooperative resource pool, the subframe resource in the offline cooperative resource pool and the subframe resource in an online cooperative resource pool used by the network node are part of all the subframe resources which can be allocated by the base station, and the subframe resources in the offline cooperative resource pool and the subframe resources in the online cooperative resource pool are orthogonal.

Preferably, the off-line node determines the subframe resource which is likely to be collided by using any or all of the following two ways:

the first method is as follows:

if the off-line node determines that the network node exists around, determining the subframe resource used by the network node, and determining the determined subframe resource used by the network node as a possible subframe resource;

the second method comprises the following steps:

if the off-line node receives frame information which is sent by other off-line nodes and carries the identifier of the network node, the sub-frame resource used by the network node and represented by the identifier of the network node is determined, and the sub-frame resource used by the network node and represented by the identifier of the network node is determined as the sub-frame resource which is possibly collided.

Preferably, the off-line node determines that it needs to coordinate resources with the on-line node in any one or more of the following four ways:

the first method is as follows:

if the network node exists around the network node, determining that the network node needs to coordinate resources with the network node;

the second method comprises the following steps:

if frame information carrying on-network node information sent by other off-line nodes is received, determining that the off-line nodes need to carry out resource coordination with the on-network nodes;

the third method comprises the following steps:

if the distance of the self away from the edge of the coverage area of the base station is less than the set distance, determining that the self needs to perform resource coordination with the network node;

the method is as follows:

and if frame information which is sent by other off-line nodes and carries off-line cooperative resource pool information is received, determining that the off-line cooperative resource pool information needs to be coordinated with resources of the on-line nodes.

Preferably, the off-net node determines that there is a surrounding net node by:

and if the second pilot frequency code is monitored, determining that network nodes exist around, wherein the first pilot frequency code is used for communication between the off-network nodes, and the second pilot frequency code is used for communication between the network nodes.

Preferably, the method further comprises:

receiving and decoding information sent at a network node;

determining the on-network node from which the correctly decoded information came;

and carrying the determined information of the network node in frame information for broadcasting.

Preferably, the method further comprises:

and broadcasting the information of the offline cooperative resource pool to other offline nodes except the offline cooperative resource pool when the offline cooperative resource pool is under the coverage of the base station before the offline cooperative resource pool is within a set distance from the edge of the coverage area of the base station.

Preferably, when the mesh node before the mesh node is the mesh node, the method further includes:

and if the subframe resources can be selected from the offline cooperative resource pool, selecting at least one subframe resource from the offline cooperative resource pool and using the subframe resource.

Preferably, the method further comprises: and if the subframe resources cannot be selected from the offline cooperative resource pool and no network node exists around the subframe resources, selecting at least one subframe resource from all the subframe resources and using the subframe resource.

In a fourth aspect, a base station includes:

the receiving module is used for receiving subframe resource demand information reported by a network node after determining that the network node in the edge area of the self-coverage area needs to perform resource coordination with the off-line nodes around the network node, wherein the off-line nodes are not under the coverage of the cellular network;

the selection module is used for selecting at least one subframe resource from all subframe resources except subframe resources which are possibly collided and are not distributed to other subframe resources in the network node if the network node reporting the subframe resource demand information is located in the edge area of the self-coverage area, wherein the subframe resources which are possibly collided are the subframe resources used by the off-network node and the network node in the self-coverage area at the same time;

and the sending module is used for sending the selected at least one subframe resource to the network node reporting the subframe resource requirement information.

In the solution of the fourth aspect, after determining that the network-connected node in the edge area of the self-coverage area needs to perform resource coordination with the network-disconnected nodes around the network-connected node, the base station allocates the subframe resources allocated to the network-connected node in the edge area of the self-coverage area to the subframe resources that are not allocated to other network-connected nodes except the subframe resources that may collide, and the subframe resources that may collide are the subframe resources used by the network-connected node and the network-connected node in the self-coverage area at the same time, so that it is ensured that the subframe resources used by the network-connected node and the network-disconnected node in the edge area of the self-coverage area do not collide, and further the reliability of communication between the subsequent network-disconnected node and the network-connected node is ensured.

Preferably, the subframe resource which is likely to be collided is a subframe resource in a offline cooperative resource pool; the subframe resources in the offline cooperative resource pool and the subframe resources in the online cooperative resource pool used by the offline node are part of all the subframe resources which can be allocated by the base station, and the subframe resources in the offline cooperative resource pool and the subframe resources in the online cooperative resource pool are orthogonal.

Preferably, the base station further comprises a determining module;

the determining module is configured to determine, in any one or all of two ways, subframe resources that may be collided: the first method is as follows: receiving interference indication information which is reported by a network node and carries the interfered subframe resource information; determining that the subframe resource which generates interference is occupied by the network node in the coverage area of the subframe resource which generates interference, and the subframe resource which generates interference is the subframe resource which is multiplexed by the off-line node; determining the subframe resource with the interference as the subframe resource with the possibility of collision; the second method comprises the following steps: predicting the potential off-line on-line nodes in the coverage area of the node; determining the network node which is out of network from the coverage area; and determining the predicted subframe resources used by the potential off-line network node and the subframe resources used by the network node which is determined to be off-line as the subframe resources which are possibly collided.

Preferably, the determining module is specifically configured to predict a potential mesh-off in-mesh node in its coverage area by: and predicting that the network node is a potential off-network node according to one or more of the timing advance TA sent to the network node, the geographical location information reported by the network node and a measurement result obtained by measuring a link channel from the equipment of the network node to the network D2N.

Preferably, the determining module is specifically configured to determine the existing mesh node that has dropped within its coverage area by: and for each network-connected node predicted to be potentially disconnected, if the information sent by the network-connected node predicted to be potentially disconnected is not received within a first set time period, determining that the network-connected node predicted to be potentially disconnected is the network-connected node which is already disconnected in the coverage area of the network-connected node.

Preferably, the base station further includes:

and the removing module is used for removing the subframe resources used by the disconnected network node from the determined subframe resources which are possibly collided if the disconnection time length of the disconnected network node exceeds a second set time length.

Preferably, the base station further includes: a determination module;

the receiving module is also used for receiving the information of the off-line nodes around the network node reported by the network node;

the determining module is configured to determine that the network node in the edge area of the coverage area of the network node needs to perform resource coordination with the network node around the network node if the time between the time of last receiving the information of the network node that has the offline node around the network node and the current time is not longer than a third set time.

Preferably, the receiving module is specifically configured to receive subframe resource information currently occupied, which is reported in a process of network access performed by a network node when a previous network node is a network-off node; or receiving resource allocation request information reported when the network node enters the edge area of the coverage area of the base station from the central area of the coverage area of the base station.

In a fifth aspect, a mesh node, comprises:

the sending module is used for reporting subframe resource demand information to the base station if a network node in the edge area of the coverage area of the base station needs to perform resource coordination with a network node around the network node, wherein the network node is not covered by a cellular network;

a receiving module, configured to receive and use at least one subframe resource issued by a base station after determining that the network node is located in an edge area of its coverage area;

In the solution of the fifth aspect, since the network node receives the subframe resource that is selected from the subframe resources that are not allocated to other network nodes except the subframe resource that may be collided among all the subframe resources after the base station determines that the network node is located in the edge area of its own coverage area, the subframe resource that may be collided is a subframe resource used by both the off-network node and the network node in the coverage area of the base station, which ensures that the subframe resource used by the network node and the off-network node in the edge area of the coverage area of the base station does not collide, thereby ensuring the reliability of the communication between the off-network node and the network node.

Preferably, the mesh node further comprises:

the determining module is used for determining that the offline nodes exist around;

the sending module is further configured to report information of the network-off nodes around to the base station.

Preferably, the determining module is specifically configured to determine that there are offline nodes around if the first pilot code is monitored, where the offline nodes use the first pilot code for communication and use the second pilot code for communication between the network nodes.

Preferably, the sending module is specifically configured to, when a network node changes from a previous off-network node to an on-network node, continue to use an original time slot resource, and report currently occupied subframe resource information to the base station in a network access process; or the network node is changed from the off-network node to the on-network node before, the original time slot resource is released, and the currently occupied subframe resource information is reported to the base station in the network access process; or the network node enters the edge area of the coverage area of the base station from the central area of the coverage area of the base station and reports the resource allocation request information to the base station.

In a sixth aspect, a mesh-off node comprises:

the first determining module is used for determining that the first determining module needs to perform resource coordination with the on-network node, wherein the off-network node is not under the coverage of the cellular network;

and the selecting module is used for selecting and using at least one subframe resource from all the subframe resources except the determined subframe resource which is possibly collided and is not allocated to other subframe resources at the network node, wherein the subframe resource which is possibly collided is the subframe resource used by the off-line node and the network node at the same time.

Preferably, the subframe resources in the offline cooperative resource pool and the subframe resources in the online cooperative resource pool used by the network node are part of all the subframe resources that can be allocated by the base station, and the subframe resources in the offline cooperative resource pool and the subframe resources in the online cooperative resource pool are orthogonal.

In the scheme of the sixth aspect, after determining that the off-network node needs to perform resource coordination with the network node, the off-network node selects and uses at least one subframe resource from all subframe resources except the determined subframe resource which is possibly collided and is not allocated to other subframe resources at the network node, wherein the subframe resource which is possibly collided is a subframe resource used by both the off-network node and the network node. This ensures that the subframe resources used by the off-network node do not collide with the subframe resources used at the network node, thereby ensuring the reliability of the subsequent communication between the off-network node and the network node.

Preferably, the network-cut-off node further comprises a second determining module, configured to determine the subframe resource where the collision may occur by using any one or all of the following two manners: the first method is as follows: if the off-line node determines that the network node exists around, determining the subframe resource used by the network node, and determining the determined subframe resource used by the network node as a possible subframe resource; the second method comprises the following steps: if the off-line node receives frame information which is sent by other off-line nodes and carries the identifier of the network node, the sub-frame resource used by the network node and represented by the identifier of the network node is determined, and the sub-frame resource used by the network node and represented by the identifier of the network node is determined as the sub-frame resource which is possibly collided.

Preferably, the first determining module is specifically configured to determine that the first determining module needs to perform resource coordination with the network node by any one or more of the following four ways: the first method is as follows: if the network node exists around the network node, determining that the network node needs to coordinate resources with the network node; the second method comprises the following steps: if frame information carrying on-network node information sent by other off-line nodes is received, determining that the off-line nodes need to carry out resource coordination with the on-network nodes; the third method comprises the following steps: if the distance of the self away from the edge of the coverage area of the base station is less than the set distance, determining that the self needs to perform resource coordination with the network node; the method is as follows: and if frame information which is sent by other off-line nodes and carries off-line cooperative resource pool information is received, determining that the off-line cooperative resource pool information needs to be coordinated with resources of the on-line nodes.

Preferably, the first determining module is specifically configured to determine that network nodes exist around the network node if the second pilot code is monitored, wherein the first pilot code is used for communication between the off-network nodes, and the second pilot code is used for communication between the network nodes.

Preferably, the off-line node further comprises a receiving module and a sending module;

the receiving module is used for receiving and decoding the information sent by the network node;

the first determining module is further configured to determine a mesh node from which correctly decoded information comes;

and the sending module is used for carrying the determined information of the network node in frame information for broadcasting.

Preferably, the off-line node further comprises: and the sending module is used for broadcasting the information of the offline cooperative resource pool to other offline nodes except the offline cooperative resource pool when the distance from the edge of the coverage area of the base station to the offline cooperative resource pool is less than the set distance, wherein the offline cooperative resource pool is acquired from the base station when the offline cooperative resource pool is under the coverage of the base station before the offline cooperative resource pool is under the coverage of the base station.

Preferably, the selecting module is further configured to select and use at least one subframe resource from the offline cooperative resource pool if it is determined that the subframe resource can be selected from the offline cooperative resource pool.

Preferably, the selecting module is further configured to select and use at least one subframe resource from all subframe resources if it is determined that the subframe resource cannot be selected from the offline cooperative resource pool and no network node exists around the selected subframe resource.

Drawings

Fig. 1 is a schematic diagram of D2D communication provided in the background of the invention;

fig. 2 is one of D2D communication scenarios provided in the background of the invention;

fig. 3 is a second communication scenario of D2D provided in the background of the invention;

fig. 4 is a third scenario of D2D communication according to the background art of the present invention;

fig. 5 is a flowchart illustrating a resource allocation method implemented by a base station according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating a resource allocation method implemented at a network node according to an embodiment of the present invention;

fig. 7 is a flowchart illustrating a resource allocation method implemented by using a cut-off node according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a mesh node according to an embodiment of the present invention;

fig. 10 is a structural diagram of a offline node according to an embodiment of the present invention;

fig. 11 is a schematic hardware structure diagram of a base station according to an embodiment of the present invention;

fig. 12 is a schematic diagram of a hardware structure of a network node according to an embodiment of the present invention;

fig. 13 is a hardware structural diagram of a offline node according to an embodiment of the present invention.

Detailed Description

In order to solve the problem of reliable communication between a network-off node and a network node, the embodiment of the invention provides a resource allocation method and equipment.

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation. And the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The method and apparatus provided by the present invention will be described in detail below with reference to the accompanying drawings using specific embodiments. In the following description, a resource allocation scheme is described with a base station as an execution subject, then a resource allocation scheme is described with a network node as an execution subject, and finally a resource allocation scheme is described with a network-off node as an execution subject.

Referring to fig. 5, a flowchart of a resource allocation method using a base station as an execution subject according to an embodiment of the present invention includes the following steps:

step 501: the base station determines that the network node in the edge area of the coverage area of the base station needs to perform resource coordination with the network nodes around the network node, and then executes step 502;

in this step 501, the base station may determine that the network node in the edge area of its own coverage area needs to perform resource coordination with the peripheral offline nodes according to the information that the offline nodes exist around the network node, where the offline nodes are not under the coverage of the cellular network;

preferably, the base station determines that the network-in node in the edge area of its coverage area needs to perform resource coordination with its surrounding network-out nodes by:

the base station judges whether the time from the time of the last receiving of the information of the off-line nodes around the network node to the current time is longer than a third set time; if the judgment result is not greater than the third set time length, determining that the network node in the edge area of the self-covered area needs to perform resource coordination with the network nodes around the network node; if the judgment result is greater than the third set time length, determining that the network-in node in the edge area of the self-coverage area does not need to perform resource coordination with the network-off nodes around the network-in node;

when the resource coordination is not needed, the following steps 502 to 506 are not needed to be executed, the information of the off-line nodes around the network node is continuously received, and the judgment operation is continuously carried out;

in the embodiment of the present invention, it is considered that if the base station does not receive information about the offline nodes around the network node reported by the network node for a long time, the base station may consider that no offline node exists around the network node within its coverage area, and at this time, resource coordination between the network node and the offline node is not required.

Step 502: the base station receives the subframe resource demand information reported by the network node, and then executes step 503;

in this step 502, the receiving, by the base station, the subframe resource requirement information reported by the network node includes:

or

The receiving of the currently occupied subframe resource information reported in the network node network access process from the previous off-network node to the network node can be divided into two cases, wherein the first case is that: receiving the subframe resource information currently occupied, which is reported in the network access process by continuing to use the original time slot resource when the network node is changed from the previous off-line node to the on-line node; the second case is: receiving the subframe resource information currently occupied, which is reported in the network access process, of the network node, wherein the network node is changed from a previous off-network node to an on-network node, the original time slot resource is released, and the subframe resource information is reported;

when the network node changes from a previous off-network node to a network node or enters an edge area of a coverage area of a base station from a central area of the coverage area of the base station of the network node, because the positions of the network nodes are changed, the currently occupied subframe resources are changed into subframe resources which are possibly collided with the subframe resources used by the off-network node from the previous subframe resources which are not collided with the off-network node, so that the current subframe resources need to be reported or the resources need to be allocated to indicate the subframe resources required by the current subframe resources, the base station further allocates the subframe resources which are not collided to the base station, and the reliability of communication between the network node and the off-network node is ensured.

Step 503: the base station judges that the network node reporting the subframe resource demand information is located in the edge area of the coverage area of the base station; if yes, go to step 504; if the determination result is negative, go to step 505;

in this step 503, the base station may determine whether the network node is located in the edge area of its coverage area according to one or more of the geographical location information reported by each network node, a measurement result obtained by the network node measuring the device-to-network D2N link channel, and a timing advance TA sent to the node. Here, the area ranges of the edge area and the central area of the coverage area of the base station may be preset.

Step 504: the base station selects at least one subframe resource from all the subframe resources except the subframe resource which is possibly collided and is not allocated to other subframe resources at the network node; then step 506 is executed;

the subframe resources which are possibly collided are subframe resources used by the off-line node and the network node in the coverage area of the off-line node;

step 505: a base station distributes subframe resources for a network node reporting subframe resource demand information according to the existing resource distribution method;

step 506: and the base station transmits the selected at least one subframe resource to the network node reporting the subframe resource requirement information.

The sub-frame resource allocation scheme based on taking the sub-frame resources in the offline cooperative resource pool as the sub-frame resources which are likely to collide can be understood as the supplement of the sub-frame resource allocation scheme when the sub-frame resources are divided based on the geographical position planning in the centralized scheduling mode for the base station, since the subframe resources that can be allocated by the base station are determined when the subframe resources are divided based on the geographical location plan, therefore, the subframe resources can be divided into three parts, the first part is a offline cooperative resource pool, the second part is an online cooperative resource pool, the third part is the subframe resources except the first part and the second part in the subframe resources which can be allocated by the base station, the first part of the subframe resources can be used for being exclusively used by offline nodes, the second part of the subframe resources can be used for being exclusively used by online nodes located in the edge area of the coverage area of the base station, and the third part can be used for being exclusively used by online nodes located in the central area of the coverage area of the base station. When the position of the network node changes (moves from the central area to the edge area of the coverage area of the base station, moves from the edge area to the central area of the coverage area of the base station, or changes from the edge area which is the off-line node entering the coverage area of the base station into the on-line node), the network node reports a resource allocation request or reports the currently occupied subframe resource, and the base station reallocates the subframe resource for the network node according to the position of the network node correspondingly; when the off-line node is changed from the on-line node in the edge area of the coverage area of the base station to the off-line node, the off-line node can adjust the subframe resource of the off-line node to be the subframe resource in the off-line cooperative resource pool, so that the off-line node and the subframe resource used by the on-line node are ensured not to collide.

The following describes a subframe resource allocation scheme using subframe resources in the offline cooperative resource pool as subframe resources that may be collided, by way of an example:

suppose that the node A is an on-network node, the node B is an off-network node, the whole resources are 100, subframes 0-10 form subframe resources in an off-network cooperative resource pool, and subframes 11-20 form subframe resources in the on-network cooperative resource pool. The base station divides the area based on the geographical position, and for the edge area in the coverage area of the base station, the subframe resources for detecting and reporting the offline node are configured in advance for the network node in the edge area in the coverage area of the base station. When the node A enters an edge area in the coverage area of the base station and the existence of the off-line nodes around is determined through lead code detection, the information of the off-line nodes around is reported to the base station. After receiving the information of the nodes with the off-line network around, the base station adjusts the subframe resources used by the node A to the subframe resources allocated to the network nodes in the edge area in the coverage area of the base station, that is, the edge area in the coverage area of the base station can only use the subframe resources in the network cooperation resource pool. When the off-line node B enters an edge area outside the coverage area of the base station and the surrounding network nodes are determined to exist through lead code detection, the sub-frame resources in the off-line cooperative resource pool are adjusted to be used by the off-line node B. When the node A moves to an area without network coverage, the original resources are abandoned, and the resources in the offline cooperative resource pool are preferentially used. Further, the node a continues to move, and a subframe collision occurs, and the subframe resource needs to be reselected, and at this time, if the existence of the node a in the network cannot be detected, the idle subframe can be selected from all the subframe resources.

The subframe resources which may be collided form the offline cooperative resource pool in a static or semi-static manner, and the base station does not need to (real-timely) determine the subframe resources which may be collided; in addition, the base station can also determine the subframe resource which is possibly collided in real time through any one or all of the following two ways:

the first method comprises the following steps a1 to a 3:

step a 1: a base station receives interference indication information which is reported by a network node and carries interference subframe resource information;

the interference of the subframe resources of the network nodes and/or the off-line nodes around can be monitored at the network nodes, and the interference indication information carrying the interference subframe resource information is reported to the base station;

step a 2: the base station determines that the subframe resource which generates interference is occupied by the network node in the coverage area of the base station, and the subframe resource which generates interference is the subframe resource which is multiplexed by the off-line node;

since the subframe resources are allocated by the base station, the base station can determine which specific subframe resource is occupied by the network node, and therefore, when the resource with interference is occupied by one network node in the coverage area of the base station, the base station can determine that the subframe resource with interference is simultaneously multiplexed by the off-network node.

Step a 3: the base station determines the subframe resource with the interference as the subframe resource which is possibly collided;

the second method comprises the following steps b1 to b 3:

step b 1: the base station predicts the potential off-line network nodes in the coverage area of the base station;

step b 2: the base station determines the network node which is out of network from the coverage area of the base station;

the execution sequence of the step b1 and the step b2 is not sequential, and b1 can be executed first, and then b2 can be executed; or, step b2 may be executed first, and then step b1 may be executed; step b1 and step b2 may also be performed in parallel.

Step b 3: and the base station determines the predicted subframe resources used by the potential offline on-network node and the subframe resources used by the offline on-network node which are determined to be offline as the subframe resources which can be collided.

Since the potential off-line on-network node may still be in the edge area of its coverage area, and the sub-frame resource allocation that has been determined to be off-line on-network node still affects the current sub-frame resource allocation when the potential off-line on-network node and the sub-frame resource that has been determined to be off-line used by the off-network node are allocated to the on-network node in its coverage area, the sub-frame resource will be simultaneously used by the on-network node and the off-network node or the on-network node and the on-network node whose distance does not reach the sub-frame resource multiplexing distance to a large extent, which causes the use of the sub-frame resource to collide, and further causes the on-network node and the off-network node to fail to communicate with each other, and therefore, the predicted sub-frame resource that is used by the potential off-network node and the sub-frame resource that has been determined to be off-network node need to be determined as possible to be used by the off-network node The collision subframe resources are prevented from being distributed to the network nodes, and the possibility of collision of the subframe resources is reduced to a greater extent.

Specifically, the base station may predict the potential off-network nodes in its coverage area by:

The analysis can be carried out according to the TA sent to the network node each time, if the general trend of the TA is increased, the network node is more and more far away from the base station, and the network node is predicted to be a potential network-off network node; the moving track of the node can be drawn according to the geographical position information reported by the network node for many times, and when the track is a coverage range far away from the base station, the network node can be predicted to be a potential off-line network node; similarly, a plurality of measurement results, such as signal strength, obtained by measuring the D2N link channel for a plurality of times are analyzed, and if the general trend of the signal strength is weak, the on-network node can be predicted to be a potentially off-network on-network node;

further, the mesh-on node which has been off-line in its coverage area can be determined by:

for each network node predicted to be potentially disconnected, judging whether information sent by the network node predicted to be potentially disconnected is received within a first set time length;

if not, determining that the predicted potential offline online node is an offline online node in the coverage area of the node; if so, determining that the current network node predicted as potential offline is still in the coverage area of the current network node;

because the offline duration of the offline node is longer, and because the mobility of the offline node and the offline node in the vehicle network is stronger, the offline node is often far away from the coverage of the base station (greater than the multiplexing distance of the subframe resources), and even if the subframe resources used by the offline node are used, interference will not be caused between the offline node and the subframe resources used by the offline node, and therefore, the subframe resources occupied by the offline node need to be removed from the subframe resources that may be collided with each other, so that the base station can allocate the subframe resources occupied by the offline node to the offline node, that is, preferably, the method further includes:

judging that the offline time of the offline node exceeds a second set time;

if the time length exceeds a second set time length, removing the subframe resources used by the disconnected network nodes from the determined subframe resources which are possible to collide; and if the time length does not exceed the second set time length, determining the subframe resources used by the disconnected network nodes as the subframe resources which are possibly collided.

Specifically, the base station receives the currently occupied subframe resource information which is converted from the previous off-line node to the network node in the network access process by the network node; the interference indication information received according to the currently occupied subframe resource information determines that the subframe resources used by the on-network node and the off-network node for reporting the currently occupied subframe resource information are the same; then, sending collision indication information to the network node reporting the currently occupied subframe resource information; receiving optional idle subframe resource information sent by the network node reporting the currently occupied subframe resource information; and combining the optional idle subframe resource information, selecting at least one subframe resource from all subframe resources except the subframe resource which is possibly collided and is not allocated to other network nodes, and issuing to the network node reporting the currently occupied subframe resource information to complete the resource allocation of the network node reporting the currently occupied subframe resource information.

More specifically, whether the network node to be disconnected is predicted to be disconnected and whether the subframe resource occupied by the disconnected network node needs to be removed from the subframe resource which is possibly collided can be respectively determined by marking the subframe resource, using a disconnection judging timer and a disconnection subframe timer, setting the timing duration of the disconnection judging timer to be the first set duration, and setting the timing duration of the disconnection subframe timer to be the second set duration. When a base station judges that a certain network node is a potential network node which is in offline, a subframe resource currently used by the network node is marked as an offline subframe resource, the base station also needs to consider the influence of the offline subframe resource (the subframe resource cannot be used by the network node in the range of interaction between the coverage range of the base station and the area where the offline node is located) when allocating the subframe resource to the network node in the coverage range of the base station, and simultaneously starts an offline judgment timer, and if the information of the network node (such as TA, position report, channel measurement quantity and the like) is received before the offline judgment timer is overtime, the offline judgment timer is cancelled, and the offline subframe attribute of the subframe resource is set as invalid. Otherwise, it may be determined that the mesh node has taken off-line. And for the network-in node determined to be offline, starting an offline subframe timer for the subframe resources occupied by the network-in node, and when the offline subframe timer is not overtime, considering the influence of the offline subframe resources when the network-in node in the coverage area of the network-in node allocates the subframe resources. When the off-line subframe timer is over, the off-line attribute of the subframe resource is cancelled, that is, the subframe resource occupied by the off-line network node needs to be removed from the subframe resource which may be collided.

The above process is illustrated below by a specific example:

suppose node a is a off-network node, node B, node C, and node D are on-network nodes. The base station is a node B, the node C respectively allocates a subframe resource 1 and a subframe resource 2, the node B and the node C need to report own geographical position information to the base station periodically, and meanwhile, when strong interference is detected, the geographical position information is also reported to the base station. The period of location reporting is assumed to be 3 s.

And for the node B, reporting the position information of the node B at the (x) s moment, and the base station does not receive the position information reported by the node at the (x +3) s moment, and predictively updating the track of the node B by the base station according to the historical information of the node B. And the base station still does not receive the position information reported by the node B when reaching the time of (x +6) s, and further the base station determines that the node B is possible to be off-line by combining the position information of the node B or the D2N link measurement quantity and the edge network coverage condition. The subframe 1 occupied by the node B is marked as a offline subframe, and the influence of the offline subframe needs to be considered when allocating subframe resources to other nodes in the cell, for example, a node within a certain distance from the edge of the cell cannot multiplex the subframe 1. And starting a offline judgment timer, wherein the time of the timer is 3s, and when the time of (x +9) s arrives, if the base station does not receive any information report of the node B in the time, determining that the node B is offline. And starting an offline subframe timer, configuring the time length 9s of the timer (the timing is set according to the movement characteristics of the nodes and the size of an interference area), and before the offline subframe timer is overtime, considering the influence of offline subframe resources when allocating subframe resources to other nodes in the cell.

After 9s, the off-line property of the subframe is invalid, and when the base station allocates a subframe to the network node, the base station may allocate the subframe 1 to the network node, assuming that the base station is allocated to the node D. After a period of time, strong interference is detected at a subframe 1 of a network node C, the strong interference is reported to a base station at a subframe 2 (subframe resources distributed by the base station for the node C) of the node C, the base station learns that the subframe 1 has a subframe collision, and the base station judges that the node D collides with a node in a non-local cell by combining subframe occupation and geographical position information for analysis. In this way, in order to ensure the effectiveness of resource allocation, the base station sends an idle subframe selection indication to the node, after receiving the idle subframe selection indication, the node D performs bottom layer monitoring and measurement, selects 3 candidate subframes, reports the subframe resources allocated to the node at the base station to the base station, determines the final subframe by the base station, and allocates the final subframe to the node D through a control channel.

Referring to fig. 6, a flowchart of a resource allocation method using a network node as an execution subject according to an embodiment of the present invention includes the following steps:

step 601: if the network node in the edge area of the coverage area of the base station needs to perform resource coordination with the off-line nodes around the network node, reporting subframe resource demand information to the base station at the network node, wherein the off-line nodes are not under the coverage of the cellular network;

step 602: receiving and using at least one subframe resource issued by a base station after the network node is determined to be located in the edge area of the coverage area of the network node at the network node;

Preferably, the method further comprises:

determining that offline nodes exist around;

and reporting the information of the off-network nodes around the base station.

Preferably, the determining that the offline nodes exist around comprises:

or

Referring to fig. 7, a schematic flowchart of a resource allocation method using a mesh-off node as an execution subject according to an embodiment of the present invention includes the following steps:

step 701: determining that the off-line node needs to perform resource coordination with the on-line node;

step 702: the off-line node selects and uses at least one subframe resource from all the subframe resources except the determined subframe resource which is possibly collided and is not allocated to other subframe resources at the network node;

wherein the subframe resource which is possibly collided is a subframe resource which is simultaneously used by the off-line node and the on-line node.

in the mode 1, if the off-line node determines that the network node exists around, the subframe resource used by the network node is determined, and the determined subframe resource used by the network node is determined as the subframe resource which possibly occurs;

in the mode 2, if the off-line node receives frame information carrying the network node identifier sent by other off-line nodes, the subframe resource used by the network node represented by the network node identifier is determined, and the subframe resource used by the network node represented by the network node identifier is determined as the subframe resource which is possibly collided.

the first mode is as follows:

judging whether the surrounding network nodes exist or not;

if the judgment result is that the surrounding network nodes exist, determining that the network nodes need to carry out resource coordination with the network nodes; if not, the method can determine that the method does not need to perform resource coordination with the network node.

The second mode is as follows:

judging whether frame information which is sent by other off-line nodes and carries the information of the on-line nodes is received;

if the judgment result is yes, determining that the self needs to carry out resource coordination with the network node;

if the judgment result is negative, determining that the self does not need to coordinate resources with the network node;

the third mode is as follows:

judging whether the distance of the self far away from the edge of the coverage area of the base station is smaller than a set distance;

the fourth mode is that:

judging whether frame information which is sent by other off-line nodes and carries off-line cooperative resource pool information is received or not;

if the judgment result is yes, determining that the self needs to carry out resource coordination with the network node.

If the judgment result is negative, determining that the self does not need to carry out resource coordination with the network node.

Preferably, the off-line node determines that there is a network node around by:

judging whether a second pilot frequency code is monitored, wherein the first pilot frequency code is used for communication among the off-line nodes, and the second pilot frequency code is used for communication among the network nodes;

if the second pilot frequency code is monitored, determining that the network nodes exist around; if the judgment result is negative, the network nodes do not exist around the network node.

Preferably, the method further comprises:

receiving and decoding information sent at a network node;

Specifically, the off-line node may use a set STI (Source temporal Identifier) to characterize the correctly decoded on-line node, and broadcast the set STI carried in the frame information to the off-line node within a one-hop distance around, so that the surrounding off-line node knows that the on-line node exists around, and the off-line node receiving the frame information carried by the set STI no longer needs to broadcast the STI information.

Preferably, the method further comprises:

judging whether subframe resources can be selected from the offline cooperative resource pool or not;

if the judgment result is that the subframe resources can be selected from the offline cooperative resource pool, selecting at least one subframe resource from the offline cooperative resource pool and using the subframe resource;

if the judgment result is that the subframe resources cannot be selected from the offline cooperative resource pool, judging whether network nodes exist around;

if the judgment result is that the network node does not exist, selecting at least one subframe resource from all the subframe resources and using the subframe resource;

and if the judgment result is that the network node exists, continuously judging whether the subframe resources can be selected from the offline cooperative resource pool or not until at least one subframe resource is selected.

Further, after the off-line node and the network node perform resource allocation, the information receiving process between the off-line node and the network node may be performed in the following manner:

1) receiving: in order to improve the system capacity, a frequency division scheme is adopted for the network node with smaller message length, and the off-line node occupies the whole frequency band resource. For the off-line node, once it is determined that there are network nodes around according to preamble detection and the like, a multi-time blind receiving method may be adopted during receiving, and sub-band (half-band) receiving is performed first, and then full-band receiving is performed. For the network node, a multi-time blind receiving method can be adopted during receiving, and all sub-frequency bands are used for receiving one by one. 2) And (3) decoding: the off-line node sends the FI to the network node without sending the FI, namely the off-line node and the network node send different message formats, and a bit indication is added to a frame format head for distinguishing whether the FI exists or not, so that the decoding processing is convenient. 3) And (3) receiving and post-processing: the off-line node sends the FI and does not send the FI at the network node, and the off-line node can represent the network node in the FI or not represent the network node in the FI. For representing the network node in the FI, only the correctly decoded network node needs to be represented, and specifically, a set STI (Source temporal identity) may be used to represent the correctly decoded network node, which includes one-hop occupation and two-hop occupation. Wherein, the FI includes status information of each time slot perceived by the node, the FI is composed of N time slot information fields, each field corresponds to a status of one time slot, and the status information of each time slot information field can be identified by 12 bits and includes: STI (8bit), a short temporary mark introduced for saving overhead, uniquely marks the node within 2 hops. Priority represents Priority (2bit), and a specific use method is not defined; BUSY, channel BUSY/idle state (1bit), FREE state (0), BUSY state (1); PTP: point-to-point service mark (1bit), other service mark setting (0), point-to-point service mark setting (1).

In addition, the embodiment of the invention also provides a resource allocation scheme in a self-organizing allocation mode, and the scheme ensures that the network node and the off-line node are effectively communicated.

For the self-organizing mode adopted under the base station, the coordination can be achieved naturally, and the two modes adopt the same FI structure except for frequency division difference, so that the cooperation and interaction can be achieved.

When the two nodes are interactive, once the off-line nodes are determined to exist around according to the lead codes and the like, a multi-time blind receiving method can be adopted during receiving, and sub-band receiving is firstly carried out and then full-band receiving is carried out. For the network node, a multi-time blind receiving method can be adopted during receiving, and sub-band receiving is firstly carried out and then full-band receiving is carried out.

For nodes that have just accessed the network from the off-line state and for nodes that have just transitioned from the on-line state to the off-line state: if no collision is detected, the existing subframe resources are continuously used.

This is illustrated below:

the node A is an on-network node, the node B is an off-network node, and the node A and the node B have communication requirements.

The node A and the node B both adopt a self-organizing mode, frame information needs to be sent, the collision of subframes can be found through cooperative interaction, and then the collision is solved.

It should be added that: the safety of the node A in the network is low in safety cost due to the existence of the base station, frequency division can be adopted, the safety cost of the node B in the off-line network is high, and the node occupies the whole sub-frame (10MHz) according to the service size of the node; for the off-network node B, once the presence of the network node is detected according to the preamble, multiple blind receptions are performed in each received subframe (for example, the reception may be performed in a sub-band and then in a full band). It is determined that information can be reliably received for both the off-network node (full band transmission) and the network node (sub-band transmission).

The resource allocation scheme provided by the embodiment of the invention can ensure the reliable communication between the network node and the off-line node, and is a supplement to the resource allocation scheme (only the network node is considered, and the compatibility with the resource allocation between the off-line nodes is not considered) of the existing cellular D2D technology to the network node by the base station. The resource allocation scheme provided by the embodiment of the invention considers the compatibility when the network node and the off-line node are allocated with resources, so that the cellular D2D resource allocation scheme is a scheme meeting various scenes.

Based on the same inventive concept, embodiments of the present invention further provide a base station, an on-network node, and an off-network node, where the base station, the on-network node, and the off-network node solve the problem according to a principle similar to that of the resource allocation method, so that the base station, the on-network node, and the off-network node may be implemented by referring to the implementation of the method, and repeated details are not repeated.

Referring to fig. 8, a base station provided in an embodiment of the present invention includes: a receiving module 81, a selecting module 82 and a sending module 83; wherein:

a receiving module 81, configured to receive subframe resource requirement information reported by a network node after determining that the network node in an edge area of a self-coverage area needs to perform resource coordination with a peripheral off-line node thereof, where the off-line node is not under coverage of a cellular network;

a selecting module 82, configured to select at least one subframe resource from subframe resources that are not allocated to other network nodes except subframe resources that may collide in all subframe resources and are not allocated to other network nodes if the network node that reports the subframe resource requirement information is located in an edge area of its own coverage area, where the subframe resources that may collide are subframe resources used by both the off-network node and the network node in its own coverage area;

and a sending module 83, configured to send the selected at least one subframe resource to an on-network node that reports the subframe resource requirement information.

Preferably, the base station further comprises a determining module 84;

the determining module 84 is configured to determine the subframe resources that may be collided in any one or all of two ways: the first method is as follows: receiving interference indication information which is reported by a network node and carries the interfered subframe resource information; determining that the subframe resource which generates interference is occupied by the network node in the coverage area of the subframe resource which generates interference, and the subframe resource which generates interference is the subframe resource which is multiplexed by the off-line node; determining the subframe resource with the interference as the subframe resource with the possibility of collision; the second method comprises the following steps: predicting the potential off-line on-line nodes in the coverage area of the node; determining the network node which is out of network from the coverage area; and determining the predicted subframe resources used by the potential off-line network node and the subframe resources used by the network node which is determined to be off-line as the subframe resources which are possibly collided.

Preferably, the determining module 84 is specifically configured to predict the potential mesh-off on-mesh nodes in its coverage area by: and predicting that the network node is a potential off-network node according to one or more of the timing advance TA sent to the network node, the geographical location information reported by the network node and a measurement result obtained by measuring a link channel from the equipment of the network node to the network D2N.

Preferably, the determining module 84 is specifically configured to determine the dropped mesh node in its coverage area by: and for each network-connected node predicted to be potentially disconnected, if the information sent by the network-connected node predicted to be potentially disconnected is not received within a first set time period, determining that the network-connected node predicted to be potentially disconnected is the network-connected node which is already disconnected in the coverage area of the network-connected node.

Preferably, the base station further includes:

and the removing module 85 is configured to remove the subframe resource used by the disconnected network node from the determined subframe resource that may be collided, if the disconnection duration of the disconnected network node exceeds a second set duration.

Preferably, the base station further includes: a determination module 84;

the receiving module 81 is further configured to receive information that a network node reports that there is a network-cut node around;

the determining module 84 is configured to determine that the network node in the edge area of the coverage area of the network node needs to perform resource coordination with the peripheral network nodes if the time between the time of last receiving the information of the network node that has the network node around and reported by the network node and the current time is not longer than a third set time.

Preferably, the receiving module 81 is specifically configured to receive subframe resource information currently occupied, which is reported when a network node changes from a previous off-network node to a network node performing a network access process; or receiving resource allocation request information reported when the network node enters the edge area of the coverage area of the base station from the central area of the coverage area of the base station.

Referring to fig. 9, a mesh node according to an embodiment of the present invention includes:

a sending module 91, configured to report subframe resource requirement information to a base station if a network node in an edge area of a coverage area of the base station needs to perform resource coordination with a network-off node around the network node, where the network-off node is not covered by a cellular network;

a receiving module 92, configured to receive and use at least one subframe resource issued by the base station after determining that the network node is located in the edge area of its coverage area;

Preferably, the mesh node further comprises:

a determining module 93, configured to determine that there are offline nodes around;

the sending module 91 is further configured to report information of the nodes around the network to the base station.

Preferably, the determining module 93 is specifically configured to determine that there are offline nodes around if the first pilot code is monitored, where the offline nodes use the first pilot code for communication and use the second pilot code for communication between the network nodes.

Preferably, the sending module 91 is specifically configured to report the subframe resource information currently occupied to the base station in the network access process when the network node changes from the previous off-network node to the on-network node and continues to use the original time slot resource; or the network node is changed from the off-network node to the on-network node before, the original time slot resource is released, and the currently occupied subframe resource information is reported to the base station in the network access process; or the network node enters the edge area of the coverage area of the base station from the central area of the coverage area of the base station and reports the resource allocation request information to the base station.

Referring to fig. 10, a mesh-cut node provided for an embodiment of the present invention includes:

a first determining module 101, configured to determine that a node needs to perform resource coordination with a node in a network, where a node out of the network is not under the coverage of a cellular network;

a selecting module 102, configured to select and use at least one subframe resource from all subframe resources except the determined subframe resource that may be collided and is not allocated to other on-network nodes, where the subframe resource that may be collided is a subframe resource used by both the off-network node and the on-network node.

Preferably, the mesh-off node further comprises a second determining module 103, configured to determine the subframe resource that may be collided in any one or all of the following two manners: the first method is as follows: if the off-line node determines that the network node exists around, determining the subframe resource used by the network node, and determining the determined subframe resource used by the network node as a possible subframe resource; the second method comprises the following steps: if the off-line node receives frame information which is sent by other off-line nodes and carries the identifier of the network node, the sub-frame resource used by the network node and represented by the identifier of the network node is determined, and the sub-frame resource used by the network node and represented by the identifier of the network node is determined as the sub-frame resource which is possibly collided.

Preferably, the first determining module 101 is specifically configured to determine that it needs to perform resource coordination with a network node by any one or more of the following four ways: the first method is as follows: if the network node exists around the network node, determining that the network node needs to coordinate resources with the network node; the second method comprises the following steps: if frame information carrying on-network node information sent by other off-line nodes is received, determining that the off-line nodes need to carry out resource coordination with the on-network nodes; the third method comprises the following steps: if the distance of the self away from the edge of the coverage area of the base station is less than the set distance, determining that the self needs to perform resource coordination with the network node; the method is as follows: and if frame information which is sent by other off-line nodes and carries off-line cooperative resource pool information is received, determining that the off-line cooperative resource pool information needs to be coordinated with resources of the on-line nodes.

Preferably, the first determining module 101 is specifically configured to determine that network nodes exist around if the second pilot code is monitored, where the first pilot code is used for communication between the off-network nodes, and the second pilot code is used for communication between the network nodes.

Preferably, the network-cut-off node further comprises a receiving module 104 and a sending module 105;

the receiving module 104 is configured to receive and decode information sent by a network node;

the first determining module 101 is further configured to determine a mesh node from which correctly decoded information comes;

the sending module 105 is configured to carry the determined information of the network node in frame information for broadcasting.

Preferably, the off-line node further comprises: a sending module 105, configured to broadcast information of the offline cooperative resource pool to other offline nodes except the offline node when a distance between the offline cooperative resource pool and an edge of a coverage area of the base station is smaller than a set distance, where the offline cooperative resource pool is obtained from the base station when the offline node is covered by the base station before.

Preferably, the selecting module 102 is further configured to select and use at least one subframe resource from the offline cooperative resource pool if it is determined that the subframe resource can be selected from the offline cooperative resource pool.

Preferably, the selecting module 102 is further configured to select and use at least one subframe resource from all subframe resources if it is determined that the subframe resource cannot be selected from the offline cooperative resource pool and no network node exists around the selected subframe resource.

The following describes the structures and processing manners of the base station, the off-network node and the on-network node according to the embodiments of the present invention, respectively, with reference to a preferred hardware structure.

Referring to fig. 11, a schematic structural diagram of a base station provided in the embodiment of the present invention includes a processor 1100, a transceiver 1101, and a memory 1102; and the processor 1100, transceiver 1101 and memory 1102 communicate over a bus interface, wherein:

the processor 1100, which reads the program in the memory 1102, performs the following processes:

after determining that a network node in the edge area of the self-coverage area needs to perform resource coordination with other peripheral off-line nodes, receiving subframe resource demand information reported by the network node through a transceiver 1101; if the network node reporting the subframe resource demand information is located in the edge area of the self coverage area, selecting at least one subframe resource from all subframe resources except the subframe resource which is possibly collided and is not allocated to other network nodes, wherein the subframe resource which is possibly collided is the subframe resource used by the off-line node and the network node in the self coverage area; and sending the selected at least one subframe resource to the network node reporting the subframe resource requirement information.

A transceiver 1101 for receiving and transmitting data under the control of the processor 1100.

Preferably, the processor 1100 is configured to read the program stored in the memory 1102 and further execute the following processes:

the subframe resources which are possibly collided are determined by any one or all of the following modes: the first method is as follows: receiving, by a transceiver 1101, interference indication information carrying subframe resource information where interference occurs, which is reported at a network node; determining that the subframe resource which generates interference is occupied by the network node in the coverage area of the subframe resource which generates interference, and the subframe resource which generates interference is the subframe resource which is multiplexed by the off-line node; determining the subframe resource with the interference as the subframe resource with the possibility of collision; the second method comprises the following steps: predicting the potential off-line on-line nodes in the coverage area of the node; determining the network node which is out of network from the coverage area; and determining the predicted subframe resources used by the potential off-line network node and the subframe resources used by the network node which is determined to be off-line as the subframe resources which are possibly collided.

predicting potential off-grid on-grid nodes in the self-coverage area by: the network node is predicted to be a potential off-network node according to one or more of the timing advance TA sent to the network node by the transceiver 1101, the geographical location information reported by the network node, and the measurement result obtained by measuring the device-to-network D2N link channel of the network node.

determining a dropped-in mesh node within its coverage area by: and for each network-connected node predicted to be potentially disconnected, if the information sent by the network-connected node predicted to be potentially disconnected is not received within a first set time period, determining that the network-connected node predicted to be potentially disconnected is the network-connected node which is already disconnected in the coverage area of the network-connected node.

receiving, by the transceiver 1101, information that there is a talk-around node around the network node; and if the time between the time of the last receiving of the information of the off-line nodes around the network node and the current time is not longer than the third set time, determining that the on-network node in the edge area of the coverage area of the on-network node needs to perform resource coordination with the off-line nodes around the on-network node.

receiving, by the transceiver 1101, subframe resource information currently occupied, which is reported in a process that a network node is converted from a previous off-line node to the network node for performing network access; or receiving resource allocation request information reported when the network node enters the edge area of the coverage area of the base station from the central area of the coverage area of the base station.

In fig. 11, among other things, the bus architecture may include any number of interconnected buses and bridges with various circuits of one or more processors, represented by processor 1100, and memory, represented by memory 1102, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1101 may be a plurality of elements, i.e., including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1102 may store data used by the processor 1100 in performing operations.

Referring to fig. 12, a schematic diagram of a hardware structure of a network node according to an embodiment of the present invention includes a processor 1200, a transceiver 1201, a memory 1202, and a user interface 1203; wherein,

a processor 1200 for reading the program in the memory 1202, performing the following processes:

reporting subframe resource demand information to a base station through a transceiver 1201; the transceiver 1201 receives and uses at least one subframe resource issued by the base station after determining that the network node is located in the edge area of the coverage area of the base station; the subframe resources are selected by the base station from all the subframe resources except the subframe resources which are possibly collided and are not allocated to other network nodes, and the subframe resources which are possibly collided are the subframe resources used by the off-line node and the network nodes in the coverage area of the base station at the same time.

A transceiver 1201 for receiving and transmitting data under the control of the processor 1200.

Preferably, the processor 1200 is configured to read the program stored in the memory 1202, and further performs the following processes:

determining that offline nodes exist around; and reporting the information of the nodes with offline in the periphery to the base station through the transceiver 1201.

the former off-network node is changed into the on-network node, the original time slot resource is continuously used, and the currently occupied subframe resource information is reported to the base station through the transceiver 1201 in the network access process; or the former off-network node is changed into the on-network node, the original time slot resource is released, and the currently occupied subframe resource information is reported to the base station through the transceiver 1201 in the network access process; or the central area of the coverage area of the base station enters the edge area of the coverage area of the base station and reports the resource allocation request information to the base station through the transceiver 1201.

Where in fig. 12, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1200 and various circuits of memory represented by memory 1202 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1201 may be a number of elements including a transmitter and a receiver providing a means for communicating with various other apparatus over a transmission medium. The user interface 1203 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1202 may store data used by the processor 1200 in performing operations.

Referring to fig. 13, a schematic structural diagram of a offline node according to an embodiment of the present invention includes a processor 1300, a transceiver 1301, a memory 1302, and a user interface 1303; wherein,

the processor 1300, which is used to read the program in the memory 1302, executes the following processes:

determining that the self needs to carry out resource coordination with the network node;

and selecting and using at least one subframe resource from all the subframe resources except the determined subframe resource which is possibly collided and is not allocated to other subframe resources at the network node, wherein the subframe resource which is possibly collided is the subframe resource used by the offline node and the network node at the same time.

A transceiver 1301 for receiving and transmitting data under the control of the processor 1300.

Preferably, the processor 1300 is configured to read the program in the memory 1302, and further performs the following processes:

determining subframe resources in which collisions are likely to occur using any or all of the following two approaches: the first method is as follows: if the network node exists around the network node, determining the subframe resource used by the network node, and determining the determined subframe resource used by the network node as a possible subframe resource; the second method comprises the following steps: if frame information carrying the network-node identifier sent by other off-line nodes is received through the transceiver 1301, the subframe resource used by the network node indicated by the network-node identifier is determined, and the subframe resource used by the network node indicated by the network-node identifier is determined as a subframe resource which is likely to collide.

determining that it needs to coordinate resources with the mesh node in any one or more of four ways: the first method is as follows: if the network node exists around the network node, determining that the network node needs to coordinate resources with the network node; the second method comprises the following steps: if frame information carrying information of the network-in node sent by other off-line nodes is received through the transceiver 1301, it is determined that the transceiver needs to perform resource coordination with the network-in node; the third method comprises the following steps: if the distance of the self away from the edge of the coverage area of the base station is less than the set distance, determining that the self needs to perform resource coordination with the network node; the method is as follows: if frame information carrying offline cooperative resource pool information sent by other offline nodes is received through the transceiver 1301, it is determined that the transceiver needs to perform resource coordination with the online node.

Preferably, the processor 1300 is configured to read the program in the memory 1302, and further performs the following processes: determining that there is a surrounding mesh node by: and if the first pilot frequency code is monitored, determining that the off-line nodes exist around, wherein the off-line nodes use the first pilot frequency code for communication, and the network nodes use the second pilot frequency code for communication.

Preferably, the processor 1300 is configured to read the program in the memory 1302, and further performs the following processes: receiving and decoding information transmitted at the network node through the transceiver 1301; determining the on-network node from which the correctly decoded information came; and carrying the determined information of the network node in frame information for broadcasting.

Preferably, the processor 1300 is configured to read the program in the memory 1302, and further performs the following processes: when the distance from the edge of the coverage area of the base station to the offline cooperative resource pool is smaller than the set distance, broadcasting the information of the offline cooperative resource pool to other offline nodes except the offline cooperative resource pool through the transceiver 1301, wherein the offline cooperative resource pool is acquired from the base station when the offline cooperative resource pool is under the coverage of the base station before the offline cooperative resource pool is under the coverage of the base station.

Preferably, the processor 1300 is configured to read the program in the memory 1302, and further performs the following processes: if the previous mesh node is a mesh-off node, if the subframe resource can be selected from the mesh-off cooperative resource pool, selecting at least one subframe resource from the mesh-off cooperative resource pool and using the selected subframe resource.

Preferably, the processor 1300 is configured to read the program in the memory 1302, and further performs the following processes: and if the subframe resources cannot be selected from the offline cooperative resource pool and no network node exists around the subframe resources, selecting at least one subframe resource from all the subframe resources and using the subframe resource.

In fig. 13, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1300 and various circuits of memory represented by memory 1302 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1301 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1303 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 1300 is responsible for managing the bus architecture and general processing, and the memory 1302 may store data used by the processor 1300 in performing operations.

Through the above description of the embodiments, it is clear to those skilled in the art that the embodiments of the present invention may be implemented by hardware, or by software plus a necessary general hardware platform. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.), and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods according to the embodiments of the present invention.

Those skilled in the art will appreciate that the drawings are merely schematic representations of one preferred embodiment and that the blocks or flow diagrams in the drawings are not necessarily required to practice the present invention.

Those skilled in the art can understand that the modules in the terminal in the embodiment can be distributed in the terminal in the embodiment according to the description of the embodiment, and can also be located in one or more terminals different from the embodiment with corresponding changes. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for resource allocation, comprising:

and the base station transmits the selected at least one subframe resource to the network node reporting the subframe resource requirement information.

2. The method of claim 1, in which the subframe resource where collision is likely is a subframe resource in a offline cooperative resource pool;

3. The method of claim 1, wherein the base station determines the subframe resources where collision is likely to occur by any one or all of the following two methods:

the first method is as follows:

the second method comprises the following steps:

Determining a network-on node that has taken off-line from its coverage area;

4. A method according to claim 3, wherein a potential off-mesh on-mesh node within its coverage area is predicted by:

5. A method as claimed in claim 3, wherein a dropped mesh node within its coverage area is determined by:

6. The method of any of claims 3-5, wherein the method further comprises:

7. The method of claim 1, wherein the method further comprises:

8. The method of claim 1, wherein receiving subframe resource requirement information reported at a network node comprises:

or

9. A method for resource allocation, comprising:

10. The method of claim 9, wherein the method further comprises:

determining that offline nodes exist around;

and reporting the information of the off-network nodes around the base station.

11. The method of claim 9, wherein determining that there are disjoint nodes around comprises:

12. The method of claim 9, wherein reporting the subframe resource requirement information to the base station at the network node comprises:

or

13. A method for resource allocation, comprising:

14. The method of claim 13, wherein the subframe resource that is likely to collide is a subframe resource in a offline cooperative resource pool, wherein the subframe resource in the offline cooperative resource pool and the subframe resource in an online cooperative resource pool used by the network node are part of all subframe resources that can be allocated by the base station, and wherein the subframe resources in the offline cooperative resource pool and the subframe resource in the online cooperative resource pool are orthogonal.

15. The method of claim 14, wherein a off-line node determines subframe resources where collisions are likely to occur using either or both of:

the first method is as follows:

the second method comprises the following steps:

16. The method of claim 13, wherein the off-grid node determines that it needs to coordinate resources with the on-grid node in any one or more of four ways:

the first method is as follows:

the second method comprises the following steps:

the third method comprises the following steps:

the method is as follows:

17. The method of claim 16, wherein the off-net node determines that there is a surrounding presence of the net node by:

18. The method of claim 13, wherein the method further comprises:

receiving and decoding information sent at a network node;

19. The method of claim 13, wherein the method further comprises:

20. The method of claim 13, wherein when a mesh node before a mesh node is a mesh node, the method further comprises:

21. The method of claim 18, wherein the method further comprises: and if the subframe resources cannot be selected from the offline cooperative resource pool and no network node exists around the subframe resources, selecting at least one subframe resource from all the subframe resources and using the subframe resource.

22. A base station, comprising:

23. The base station of claim 22, wherein the subframe resource where collision is likely is a subframe resource in a cooperative resource pool for offline; the subframe resources in the offline cooperative resource pool and the subframe resources in the online cooperative resource pool used by the offline node are part of all the subframe resources which can be allocated by the base station, and the subframe resources in the offline cooperative resource pool and the subframe resources in the online cooperative resource pool are orthogonal.

24. The base station of claim 22, wherein the base station further comprises a determination module;

25. The base station of claim 24, wherein the determining module is specifically configured to predict the potential mesh-off in-mesh node within its coverage area by: and predicting that the network node is a potential off-network node according to one or more of the timing advance TA sent to the network node, the geographical location information reported by the network node and a measurement result obtained by measuring a link channel from the equipment of the network node to the network D2N.

26. The base station of claim 24, wherein the determining module is specifically configured to determine the off-grid-located network node in its coverage area by: and for each network-connected node predicted to be potentially disconnected, if the information sent by the network-connected node predicted to be potentially disconnected is not received within a first set time period, determining that the network-connected node predicted to be potentially disconnected is the network-connected node which is already disconnected in the coverage area of the network-connected node.

27. The base station of any of claims 24-26, wherein the base station further comprises:

28. The base station of claim 22, wherein the base station further comprises: a determination module;

29. The base station of claim 22, wherein the receiving module is specifically configured to receive currently occupied subframe resource information reported in a process of a network node performing network access from a previous node that is a offline node; or receiving resource allocation request information reported when the network node enters the edge area of the coverage area of the base station from the central area of the coverage area of the base station.

30. A mesh node, comprising:

the base station comprises a sending module and a sending module, wherein the sending module is used for reporting subframe resource demand information to the base station if a network node in the edge area of the coverage area of the base station needs to perform resource coordination with a network disconnection node around the network node, and the network disconnection node is not covered by a cellular network;

31. The mesh node of claim 30 wherein said mesh node further comprises:

32. The network node of claim 30, wherein the determining module is configured to determine that there are disjoint nodes in the vicinity if a first pilot code is heard, wherein the first pilot code is used for communication between the disjoint nodes and a second pilot code is used for communication between the network nodes.

33. The on-network node of claim 30, wherein the sending module is specifically configured to report subframe resource information currently occupied to the base station during a network access process when the network node changes from a previous off-network node to an on-network node and continues to use an original time slot resource; or the network node is changed from the off-network node to the on-network node before, the original time slot resource is released, and the currently occupied subframe resource information is reported to the base station in the network access process; or the network node enters the edge area of the coverage area of the base station from the central area of the coverage area of the base station and reports the resource allocation request information to the base station.

34. A off-line node, comprising:

35. The mesh-free node of claim 34, wherein the subframe resources in the mesh-free cooperative resource pool and the subframe resources in the mesh-free cooperative resource pool used by the mesh node are part of all subframe resources that can be allocated by the base station, and wherein the subframe resources in the mesh-free cooperative resource pool and the subframe resources in the mesh-free cooperative resource pool are orthogonal.

36. The mesh-free node of claim 34, further comprising a second determining module for determining subframe resources where collisions are likely to occur using either or both of: the first method is as follows: if the off-line node determines that the network node exists around, determining the subframe resource used by the network node, and determining the determined subframe resource used by the network node as a possible subframe resource; the second method comprises the following steps: if the off-line node receives frame information which is sent by other off-line nodes and carries the identifier of the network node, the sub-frame resource used by the network node and represented by the identifier of the network node is determined, and the sub-frame resource used by the network node and represented by the identifier of the network node is determined as the sub-frame resource which is possibly collided.

37. The talk-around node of claim 34, wherein the first determining module is specifically configured to determine that it needs to perform resource coordination with the talk-around node by any one or more of the following four ways: the first method is as follows: if the network node exists around the network node, determining that the network node needs to coordinate resources with the network node; the second method comprises the following steps: if frame information carrying on-network node information sent by other off-line nodes is received, determining that the off-line nodes need to carry out resource coordination with the on-network nodes; the third method comprises the following steps: if the distance of the self away from the edge of the coverage area of the base station is less than the set distance, determining that the self needs to perform resource coordination with the network node; the method is as follows: and if frame information which is sent by other off-line nodes and carries off-line cooperative resource pool information is received, determining that the off-line cooperative resource pool information needs to be coordinated with resources of the on-line nodes.

38. The de-meshed node of claim 37, wherein the first determining module is configured to determine that there are network nodes in the vicinity if a second pilot code is heard, wherein the de-meshed node uses the first pilot code for communication and the network nodes use the second pilot code for communication.

39. The delinking node of claim 34, wherein said delinking node further comprises a receiving module and a transmitting module;

40. The delinking node of claim 34, wherein said delinking node further comprises: and the sending module is used for broadcasting the information of the offline cooperative resource pool to other offline nodes except the offline cooperative resource pool when the distance from the edge of the coverage area of the base station to the offline cooperative resource pool is less than the set distance, wherein the offline cooperative resource pool is acquired from the base station when the offline cooperative resource pool is under the coverage of the base station before the offline cooperative resource pool is under the coverage of the base station.

41. The off-line node of claim 34, wherein the selection module is further configured to select and use at least one subframe resource from the off-line cooperative resource pool if it is determined that the subframe resource can be selected from the off-line cooperative resource pool.

42. The off-line node of claim 39, wherein the selection module is further configured to select and use at least one subframe resource from all subframe resources if it is determined that a subframe resource cannot be selected from the off-line cooperative resource pool and there is no surrounding network node.