CN104469949B - Keepalive method, apparatus and system in wireless network - Google Patents

Abstract

The invention proposes a keep-alive method, device and system in a wireless network. The method includes: the eNB allocates contention resources dedicated to transmitting keep-alive data, and broadcasts the contention resources in the network; the UE receives the contention resources sent by the eNB, selects resources from the contention resources, and uses the selected resources to send a keep-alive message to the eNB. A keep-alive message, the keep-alive message carries the UE identifier and keep-alive data. The present invention reduces the overhead of keeping alive in the wireless network by reducing the interaction between the eNB and the UE, and further reduces the data sending delay.

Description

Method, device and system for keeping alive in wireless network

technical field

The present invention relates to the technical field of wireless communication, in particular to a keep-alive method, device and system in a wireless network.

Background technique

With the emergence of a large number of applications supporting keep-alive, the keep-alive small data packet will also greatly affect the transmission efficiency of the cellular network, especially the efficiency of wireless signaling transmission. However, the existing signaling simplification packet delivery scheme still relies on the user's initial access synchronization, potentially causing a large amount of access overhead; There are many signaling optimization schemes, and these schemes are mainly suitable for weak mobile MTC applications, and it is difficult to meet the connectionless transmission requirements of keep-alive information.

In view of the above problems, a transmission scheme of "supporting simplified signaling transmission of small data packets" is proposed in the prior art, and radio resource control (RRC, Radio Resource Control) and non-access stratum (NAS, non accessstratum) signaling are canceled The transfer of small data packets to realize the simplified signaling, as shown in Figure 1, the specific steps are as follows:

Steps 101-102: The user equipment (UE, User Equipment) sends a random access request to the evolved base station (eNB, evolved Node Base) through a random access channel (RACH, RadomAccess CHannel), and the eNB returns a random access response to the UE.

Steps 103-104: the UE sends a message 3 (Msg3) to the eNB, which may carry keep-alive data, and the eNB returns a message 4 (Msg4) to the UE.

Steps 105-106: The eNB sends a get service gateway address (GetSGAddr) message to a mobile management entity (MME, Mobile Management Entity), and the MME returns a gateway address (SGW Addr) to the eNB.

Steps 107-108: The eNB sends a General Packet Radio Service Tunneling Protocol-Shared (GTP-S, General Packet Radio Service Tunnel Protocol-Shared) message to the Serving Gateway (SGW, Serving Gateway). This message can carry keep-alive data, and the SGW will The GTP-S message is forwarded to a packet data network gateway (PGW, Packet DataNetwork Gateway).

Although the above solution saves RRC and NAS signaling resources, it still potentially consumes a large amount of access resources or causes a large collision overhead, especially for small data packet access such as keep-alive information. The loss outweighs the gain.

Contents of the invention

The invention provides a keep-alive method, device and system in a wireless network to reduce keep-alive expenses.

Technical scheme of the present invention is realized like this:

A method for keeping alive in a wireless network, the method comprising:

The evolved base station eNB allocates contention resources dedicated to transmitting keep-alive data, and broadcasts the contention resources in the network;

The eNB receives the keep-alive message sent by the user equipment UE, the keep-alive message carries the UE identity and the keep-alive data,

Wherein, the keep-alive message is: the UE receives competing resources from the eNB, selects resources from the competing resources, and sends the selected resources to the eNB.

The eNB broadcasts the contention resource in the network as:

The eNB broadcasts the position, valid time and unit length of the contention resource in the network.

The allocation of contention resources dedicated to transmitting keep-alive data by the eNB further includes:

The eNB divides the contention resource into multiple sub-resources in the time, or/and frequency domain, or/and code domain according to the radio link condition, or/and the keep-alive data size;

And, the eNB broadcasting the contention resource in the network further includes:

The eNB broadcasts the radio link conditions and/or the size of the keep-alive data corresponding to each contention resource, so that the UE selects the corresponding resource from the contention resources according to its own radio link conditions and/or the size of the keep-alive data.

The receiving of the keep-alive message sent by the UE by the eNB further includes:

For each competing resource, the eNB periodically counts the keep-alive messages sent through the resource within this period, and returns a keep-alive confirmation message to all UEs that send the keep-alive messages;

Or, for each competing resource, when the eNB counts that the number of keep-alive messages sent through the resource reaches a preset number, it returns a keep-alive confirmation message to all UEs that sent the keep-alive messages.

The eNB returns a keep-alive confirmation message to all UEs that have sent the keep-alive message:

The eNB returns the same keep-alive confirmation message to all UEs, and the message includes: a resource identifier and a list of UEs that send the keep-alive message through the resource.

After receiving the keep-alive message sent by the UE, the eNB further includes:

The eNB reports the keep-alive UE identification to the user status management server, so that the user status management server maintains the keep-alive status of all UEs, and provides the keep-alive status of each UE to the application provider server.

A method for keeping alive in a wireless network, the method comprising:

The UE receives the contention resources sent by the eNB, selects resources from the contention resources, and uses the selected resources to send a keep-alive message to the eNB. The message carries the UE identity and keep-alive data.

Wherein, the contention resource is: a resource allocated by the eNB dedicated to transmitting keep-alive data, and the eNB broadcasts the contention resource in the network.

The keep-alive message further carries application-related status update information, or/and network status information, or/and user location information.

After the UE sends the keep-alive message to the eNB using the selected resource, it further includes:

After the UE sends the keep-alive message, if it does not receive the keep-alive confirmation message from the eNB within a timeout period, it re-selects competing resources and uses the selected resource to re-send the keep-alive message.

An eNB in a wireless network, the eNB includes:

Resource allocation module: allocate competitive resources dedicated to the transmission of keep-alive data, and broadcast the competitive resources in the network;

Keep-alive module: receive a keep-alive message from the UE, the keep-alive message carries the UE identifier and keep-alive data, wherein the keep-alive message is: the UE receives the contention resources sent by the eNB, and selects from the contention resources Resource, sent to the eNB using the selected resource.

The resource allocation module is further configured to divide the contention resource into multiple sub-resources in the time, or/and frequency domain, or/and code domain according to the radio link condition, or/and keep-alive data size, and broadcast The radio link conditions and/or the size of the keep-alive data corresponding to each contention resource, so that the UE selects the corresponding resource from the contention resources according to its own radio link condition and/or the size of the keep-alive data.

The keep-alive module is further configured to, for each competing resource, the eNB periodically counts the keep-alive messages sent through the resource within this period, and returns a keep-alive confirmation message to all UEs that send the keep-alive messages; or, For each competing resource, when the eNB counts the number of keep-alive messages sent through the resource reaching a preset number, it returns a keep-alive confirmation message to all UEs that sent the keep-alive messages.

The keep-alive module is further configured to return the same keep-alive confirmation message to all UEs when returning the keep-alive confirmation message to all UEs that have sent the keep-alive message, and the message includes: resource identifier, UE list for keep-alive messages.

The keep-alive module is further configured to report the keep-alive UE identification to the user status management server, so that: the user status management server maintains the keep-alive status of all UEs, and provides the keep-alive status of each UE to the application provider server.

A UE in a wireless network, the UE includes:

Resource selection module: receiving the competing resources sent by the eNB, and selecting resources from the competing resources, wherein the competing resources are: resources allocated by the eNB dedicated to transmitting keep-alive data, and the eNB broadcasts the competing resources in the network;

Keep-alive module: use the resource selected by the resource selection module to send a keep-alive message to the eNB, and the message carries the UE identity and keep-alive data.

The keep-alive module is further configured to, after sending the keep-alive message, if no keep-alive confirmation message is received from the eNB within a timeout, re-select competing resources, and use the selected resources to re-send the keep-alive message.

A keep-alive system in a wireless network, the system includes: UE and eNB, wherein:

The UE receives contention resources broadcast by the eNB, selects resources from the contention resources, and uses the selected resources to send a keep-alive message to the eNB, the keep-alive message carrying the UE identity and keep-alive data;

The eNB allocates contention resources dedicated to transmitting keep-alive data, and broadcasts the contention resources in the network; receives the keep-alive message sent by the UE.

The eNB is further configured to divide the contention resources into multiple sub-resources in the time, or/and frequency domain, or/and code domain according to radio link conditions, or/and keep-alive data size; and, broadcast each contention resource The wireless link condition corresponding to the resource, or/and the keep-alive data size;

In addition, the UE is further configured to select a corresponding resource from the contention resources according to its own radio link condition or/and keep-alive data size.

The eNB is further configured to, for each contention resource, periodically count the keep-alive messages sent through the resource in this period, and return a keep-alive confirmation message to all UEs that send the keep-alive message; or, for each Competing for resources, when it is counted that the number of keep-alive messages sent through the resource reaches a preset number, return a keep-alive confirmation message to all UEs that sent the keep-alive messages.

The eNB is further configured to report the keep-alive UE identification to the user status management server, so that the user status management server maintains the keep-alive status of all UEs, and provides the keep-alive status of each UE to the application provider server.

The UE is further configured to, after sending the keep-alive message, if no keep-alive acknowledgment message is received from the eNB within a timeout, re-select competing resources, and use the selected resources to re-send the keep-alive message.

It can be seen that in the present invention, the UE directly sends keep-alive data through competing resources without accessing a certain cell, realizing connectionless keep-alive data transmission. At the same time, the UE does not need to distinguish applications for keep-alive, and adopts the same keep-alive for all applications. The process is enough, greatly reducing the number and amount of signaling interactions between the UE and the network side, reducing the energy consumption of the UE, and at the same time, further reducing the data transmission delay between the UE and the eNB.

Description of drawings

Fig. 1 is the message flowchart of existing simplified signaling transmission supporting small data packets;

FIG. 2 is a flowchart of a keep-alive method in a wireless network provided by an embodiment of the present invention;

FIG. 3 is a schematic diagram of the format of a keep-alive contention resource indication message provided by an embodiment of the present invention;

FIG. 4 is a flowchart of a method for managing keep-alive data provided by an embodiment of the present invention;

FIG. 5 is a schematic diagram of composition of an eNB in a wireless network provided by an embodiment of the present invention;

FIG. 6 is a schematic diagram of composition of UEs in a wireless network provided by an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 2 is a flow chart of the keep-alive method in the wireless network provided by the embodiment of the present invention, as shown in Fig. 2, the specific steps are as follows:

Step 201: The eNB allocates contention resources dedicated to the transmission of keep-alive data, broadcasts a keep-alive contention resource indication message in the network, and the message carries a keep-alive-radio network temporary identifier (KA-RNTI, Keep Alive-Radio Network Temporary Identifier) and contention resource information.

The eNB can adjust the contention resources in real time according to the usage of the transmission resources.

Among them, KA-RNTI is pre-defined, and is used to indicate that the message is a message dedicated to allocating contention resources for transmission of keep-alive data; contention resource information includes: contention resource location, valid time, and unit contention resource length, and can also be Including: Modulation and Coding Scheme (MCS, Modulation and Coding Scheme) type corresponding to contention resources.

Fig. 3 shows a schematic diagram of the format of the keep-alive contention resource indication message provided by the embodiment of the present invention. As shown in Fig. 3, eNB allocates contention resource 1 and contention resource 2 for keep-alive data, wherein contention resource 1 corresponds to the MCS type 1. Competing resource 2 corresponds to MCS type 2.

The eNB can further divide the contention resources into multiple sub-resources in the time, or/and frequency domain, or/and code domain according to the radio link conditions, or/and keep-alive data size, etc., in the keep-alive contention resource indication message Indicate the wireless link condition corresponding to each subresource, or/and the size of the keep-alive data.

For example, wireless link conditions: according to the occupancy of the wireless link, the wireless link conditions are divided into: good, poor, etc.; the size of the keep-alive data is: divided into: large, small, etc. according to the size of the keep-alive data. More resources may be allocated to those with poor wireless link conditions and large keep-alive data, and less resources may be allocated to those with good wireless link conditions and small keep-alive data.

Step 202: Any UE receives the keep-alive contention resource indication message, and according to the KA-RNTI in the message, learns that the message is a keep-alive contention resource indication message, and selects a suitable resource from the contention resources indicated by the contention resource information of the message. The selected resources are used to send a keep-alive message to the eNB, and the keep-alive message carries the UE identity and keep-alive data.

Wherein, the UE identifier may be an International Mobile Subscriber Identification Number (IMSI, International Mobile Subscriber Identification Number), or an identifier generated according to the ID of the cell where the UE is located, or a random number randomly generated by the UE.

If the keep-alive contention resource indication message indicates the radio link condition corresponding to each contention resource, or/and the size of the keep-alive data. Then in this step, the UE may select corresponding resources from the contention resources indicated by the keep-alive contention resource indication message according to its own radio link conditions and/or the size of the keep-alive data.

The keep-alive message may also carry a small packet option, and the small packet option may carry application-related status update information, or/and network status information, and the like. Network status information, such as network neighbor measurement information, network channel quality, etc.

When the keep-alive data is small, other user information, such as user location information, may be filled behind the keep-alive data in the keep-alive message, so as to support precise paging by the network. At this time, it is necessary to indicate in the packet option of the keep-alive message that the keep-alive data contains user information, and indicate the location of the user information.

Step 203: For each competing resource, the eNB periodically counts the keep-alive messages sent through the resource within this period, and returns a keep-alive confirmation (ACK) message to all UEs that sent the keep-alive message; or, for each Competing for resources, when the eNB counts that the number of keep-alive messages sent through the resource reaches a preset number, it returns a keep-alive confirmation message to all UEs that sent the keep-alive messages.

Here, the same keep-alive confirmation message may be returned to all UEs, and the message includes: a resource identifier and a list of UEs that send the keep-alive message through the resource.

In this embodiment, if the UE does not receive a keep-alive confirmation message from the eNB after sending the keep-alive message, it may return to step 202 to reselect competing resources to send the keep-alive message again.

It can be seen from the embodiment shown in Figure 2 that the eNB broadcasts contention resources dedicated to transmitting keep-alive data to the UE, and the UE directly sends keep-alive data through the contention resources without accessing a certain cell, realizing connectionless keep-alive At the same time, the UE does not need to distinguish between applications to keep alive, and can use the same keep-alive process for all applications, which greatly reduces the number and amount of signaling interactions between the UE and the network side, and reduces the energy consumption of the UE. The data transmission delay between UE and eNB can be further reduced.

In practical applications, the eNB can also transmit the keep-alive information of the user to the user status management server in real time, so that the application provider server can query the user status.

Fig. 4 is a flowchart of a method for managing keep-alive data provided by an embodiment of the present invention, as shown in Fig. 4 , the specific steps are as follows:

Step 401: When the UE opens an application, it sends a registration message carrying the UE identity and the application identity to the user state management server on the network side; after receiving the message, the user state management server records the information of the UE identity, the application identity, and the user state Mapping relationship, where the user status is initialized as online.

Step 402: The eNB carries the UE identity sent in the keep-alive message in the keep-alive report message and sends it to the user status management server in real time or periodically.

Step 403: The user status management server receives the keep-alive reporting message sent by the eNB, reads the UE ID from the message, finds the corresponding mapping relationships according to the UE ID, and changes the user status in each mapping relationship to: keep alive live.

Since one UE may open multiple applications at the same time, one UE ID may correspond to multiple application IDs, that is, the mapping relationship among multiple UE IDs, application IDs, and user states may be found according to one UE ID.

Step 404: For any UE, if the user state management server finds that no keep-alive report message for the UE has been received from the eNB within a preset period of time, change the user state in each mapping relationship corresponding to the UE identity For: offline.

Step 405: When the user status management server receives the user status query message carrying the UE ID and the application ID sent by any application provider server, it finds the corresponding mapping relationship according to the UE ID and the application ID, and the mapping relationship The user status carried in the user status query response message is returned to the application provider server.

The composition of the keep-alive system in the wireless network provided by the embodiment of the present invention is given below, which mainly includes: UE and eNB, wherein:

UE: Receives the contention resources broadcast by the eNB, selects resources from the contention resources, and uses the selected resources to send a keep-alive message to the eNB, the keep-alive message carrying UE identity and keep-alive data.

eNB: Allocate contention resources dedicated to transmitting keep-alive data, and broadcast the contention resources in the network; receive keep-alive messages from UE.

Wherein, the broadcasting of the contention resource by the eNB in the network includes: broadcasting the position, valid time and unit length of the contention resource.

The eNB is further used to divide the contention resource into multiple sub-resources in the time, or/and frequency domain, or/and code domain according to the radio link condition, or/and keep-alive data size; and broadcast the corresponding radio link conditions, or/and keep-alive data size.

Moreover, the UE selects corresponding resources from the contention resources according to its own radio link conditions and/or the size of the keep-alive data.

The eNB is further configured to, for each competing resource, periodically count the keep-alive messages sent through the resource within this period, and return a keep-alive confirmation message to all UEs that sent the keep-alive messages; or, for each competing resource , when it is counted that the number of keep-alive messages sent through the resource reaches a preset number, return a keep-alive confirmation message to all UEs that send the keep-alive messages.

Wherein, the eNB may return the same keep-alive confirmation message to all UEs, and the message includes: a resource identifier and a list of UEs that send the keep-alive message through the resource.

The eNB is further configured to report the keep-alive UE identification to the user status management server, so that the user status management server maintains the keep-alive status of all UEs, and provides the keep-alive status of each UE to the application provider server.

The UE is further configured to, after sending the keep-alive message, if it does not receive the keep-alive confirmation message from the eNB within a timeout, re-select competing resources, and use the selected resource to re-send the keep-alive message.

FIG. 5 is a schematic diagram of the composition of an eNB in a wireless network provided by an embodiment of the present invention. As shown in FIG. 5, it mainly includes: a resource allocation module 51 and a keep-alive module 52, wherein:

Resource allocation module 51: Allocate contention resources dedicated to transmitting keep-alive data, and broadcast the contention resources in the network.

Keep-alive module 52: receiving a keep-alive message sent by UE through resource competition, and the keep-alive message carries UE identity and keep-alive data.

The resource allocation module 51 is further configured to divide the contention resource into multiple sub-resources in the time, or/and frequency domain, or/and code domain according to the radio link condition, or/and keep-alive data size, and broadcast each Competing for the radio link condition corresponding to the resource, or/and the size of the keep-alive data, so that the UE selects the corresponding resource from the contention resource according to its own radio link condition and/or the size of the keep-alive data.

The keep-alive module 52 is further configured to, for each competing resource, the eNB periodically counts the keep-alive messages sent through the resource within this period, and returns a keep-alive confirmation message to all UEs that send the keep-alive message; or, for For each contention resource, when the eNB counts that the number of keep-alive messages sent through the resource reaches a preset number, it returns a keep-alive confirmation message to all UEs that send the keep-alive messages.

The keep-alive module 52 is further configured to return the same keep-alive confirmation message to all UEs when returning the keep-alive confirmation message to all UEs that have sent the keep-alive message, and the message includes: a resource identifier, and a keep-alive confirmation message sent through the resource. UE list of live messages.

The keep-alive module 52 is further configured to report the keep-alive UE identification to the user status management server, so that the user status management server maintains the keep-alive status of all UEs, and provides the keep-alive status of each UE to the application provider server.

FIG. 6 is a schematic diagram of the composition of a UE in a wireless network provided by an embodiment of the present invention. As shown in FIG. 6, it mainly includes: a resource selection module 61 and a keep-alive module 62, wherein:

The resource selection module 61: receives contention resources broadcast by the eNB, and selects resources from the contention resources, wherein the contention resources are: resources allocated by the eNB and dedicated to transmitting keep-alive data.

The keep-alive module 62: uses the resource selected by the resource selection module 61 to send a keep-alive message to the eNB, and the message carries the UE identity and keep-alive data.

The keep-alive module 62 is further configured to, after sending the keep-alive message, if no keep-alive acknowledgment message is received from the eNB within a timeout, re-select competing resources, and use the selected resources to re-send the keep-alive message.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (21)

1. the keepalive method in a kind of wireless network, which is characterized in that this method includes：

Evolution base station eNB distribution is exclusively used in the competitive resource of transmission keep-alive data, broadcasts the competitive resource in a network；

ENB receives the keep-alive message that user equipment (UE) is sent, which carries UE marks and keep-alive data,

Wherein, the keep-alive message is：UE receives the competitive resource that eNB is sent, and resource is selected from the competitive resource, uses What selected resource was sent out to eNB.

2. according to the method described in claim 1, it is characterized in that, the eNB broadcasts the competitive resource in a network is：

The eNB position of broadcast contention resource, effective time and unit competitive resource length in a network.

3. according to the method described in claim 1, it is characterized in that, eNB distribution is exclusively used in the competition of transmission keep-alive data Resource further comprises：

ENB, will competition on time or/and frequency domain or/and code domain according to radio link conditions or/and keep-alive size of data Resource is divided into multiple child resources；

And eNB broadcasts the competitive resource and further comprises in a network：

ENB broadcasts the corresponding radio link conditions of each competitive resource or/and keep-alive size of data, so as to：UE is according to the nothing of itself Wired link condition or/and keep-alive size of data, select corresponding resource from the competitive resource.

4. according to the method described in claim 1, it is characterized in that, the keep-alive message that eNB receptions UE is sent further is wrapped It includes：

For each competitive resource, eNB periodically counts the keep-alive message sent by the resource in this period, is protected to sending All UE of message living return to keep-alive confirmation message；

Alternatively, for each competitive resource, when the number that eNB counts on the keep-alive message sent by the resource reaches present count When mesh, keep-alive confirmation message is returned to all UE for sending keep-alive message.

5. according to the method described in claim 4, it is characterized in that, the eNB returns to guarantor to all UE for sending keep-alive message Confirmation message living is：

ENB returns to same keep-alive confirmation message to all UE, which includes：Resource identification sends guarantor by the resource The UE lists of message living.

6. according to the method described in claim 1, it is characterized in that, the eNB receives laggard the one of the keep-alive message that UE is sent Step includes：

ENB reports the UE of keep-alive to identify to User Status management server, so as to：User Status management server safeguards all UE Keepalive state, and provide to application provider's server the keepalive state of each UE.

7. the keepalive method in a kind of wireless network, which is characterized in that this method includes：

User equipment (UE) receives the competitive resource that evolution base station eNB is sent, and resource is selected from the competitive resource, using selected Resource to eNB send keep-alive message, the message carry this UE mark and keep-alive data,

Wherein, the competitive resource is：The resource for being exclusively used in transmission keep-alive data of eNB distribution, and eNB is broadcasted be somebody's turn to do in a network Competitive resource.

8. the method according to the description of claim 7 is characterized in that the keep-alive message is further carried using correlated condition more New information or/and network state information or/and customer position information.

9. the method according to the description of claim 7 is characterized in that the UE sends keep-alive using selected resource to eNB Further comprise after message：

After UE sends out keep-alive message, time-out does not receive the keep-alive confirmation message from eNB, then reselects competitive resource, make Keep-alive message is re-emitted with the resource of selection.

10. the evolution base station eNB in a kind of wireless network, which is characterized in that the eNB includes：

Resource distribution module：Distribution is exclusively used in the competitive resource of transmission keep-alive data, broadcasts the competitive resource in a network；

Keep-alive module：The keep-alive message that user equipment (UE) is sent is received, which carries UE marks and keep-alive data, In, the keep-alive message is：UE receives the competitive resource that eNB is sent, and resource is selected from the competitive resource, using selected Resource send out to eNB.

11. eNB according to claim 10, which is characterized in that the resource distribution module is further used for, according to wireless Link condition or/and keep-alive size of data, multiple sons are divided on time or/and frequency domain or/and code domain by competitive resource Resource, and, the corresponding radio link conditions of each competitive resource or/and keep-alive size of data are broadcasted, so as to：UE according to itself Radio link conditions or/and keep-alive size of data, select corresponding resource from the competitive resource.

12. eNB according to claim 10, which is characterized in that the keep-alive module is further used for, for each competition Resource, eNB periodically count the keep-alive message sent by the resource in this period, are returned to all UE for sending keep-alive message Return keep-alive confirmation message；Alternatively, for each competitive resource, when eNB counts on the number for the keep-alive message sent by the resource When mesh reaches preset number, keep-alive confirmation message is returned to all UE for sending keep-alive message.

13. eNB according to claim 12, which is characterized in that the keep-alive module is further used for, to sending keep-alive When all UE of message return to keep-alive confirmation message, same keep-alive confirmation message is returned to all UE, which includes：Money Source mark, the UE lists that keep-alive message is sent by the resource.

14. eNB according to claim 10, which is characterized in that the keep-alive module is further used for, to User Status pipe Reason server reports the UE of keep-alive to identify, so as to：User Status management server safeguards the keepalive state of all UE, and to application Provider server provides the keepalive state of each UE.

15. the user equipment (UE) in a kind of wireless network, which is characterized in that the UE includes：

Resource selection module：The competitive resource that evolution base station eNB is sent is received, selects resource from the competitive resource, wherein institute Stating competitive resource is：The resource for being exclusively used in transmission keep-alive data of eNB distribution, and eNB broadcasts the competitive resource in a network；

Keep-alive module：Keep-alive message is sent to eNB using the selected resource of resource selection module, which carries this UE marks With keep-alive data.

16. UE according to claim 15, which is characterized in that the keep-alive module is further used for, and sends out keep-alive message Afterwards, time-out does not receive the keep-alive confirmation message from eNB, then reselects competitive resource, sent out again using the resource of selection Go out keep-alive message.

17. the keep-alive system in a kind of wireless network, which is characterized in that the system includes：User equipment (UE) and evolution base station ENB, wherein：

UE receives the competitive resource of eNB broadcast, resource is selected from the competitive resource, is sent to eNB using selected resource Keep-alive message, the keep-alive message carry UE marks and keep-alive data；

ENB, distribution are exclusively used in the competitive resource of transmission keep-alive data, broadcast the competitive resource in a network；Receive what UE was sent Keep-alive message.

18. system according to claim 17, which is characterized in that the eNB is further used for, according to radio chains travel permit Part or/and keep-alive size of data, multiple child resources are divided on time or/and frequency domain or/and code domain by competitive resource； And broadcast the corresponding radio link conditions of each competitive resource or/and keep-alive size of data；

And the UE is further used for, according to the radio link conditions of itself or/and keep-alive size of data, from the competitive resource It is middle to select corresponding resource.

19. system according to claim 18, which is characterized in that the eNB is further used for, and each competition is provided Source periodically counts the keep-alive message sent by the resource in this period, returns and protects to all UE for sending keep-alive message Confirmation message living；Alternatively, for each competitive resource, when the number for counting on the keep-alive message sent by the resource reaches pre- If when number, keep-alive confirmation message is returned to all UE for sending keep-alive message.

20. system according to claim 18, which is characterized in that the eNB is further used for, and is taken to User Status management Business device reports the UE of keep-alive to identify, so as to：User Status management server safeguards the keepalive state of all UE, and is provided to application Quotient's server provides the keepalive state of each UE.

21. system according to claim 18, which is characterized in that the UE is further used for, and after sending out keep-alive message, surpasses Shi Wei receives the keep-alive confirmation message from eNB, then reselects competitive resource, and keep-alive is re-emitted using the resource of selection Message.