WO2013159678A1

WO2013159678A1 - Data transmission method, user equipment, base station and system

Info

Publication number: WO2013159678A1
Application number: PCT/CN2013/074478
Authority: WO
Inventors: 李龠; 杨飞; 郭小龙
Original assignee: 华为技术有限公司
Priority date: 2012-04-24
Filing date: 2013-04-20
Publication date: 2013-10-31
Also published as: CN103379581B; CN103379581A

Abstract

Provided are a data transmission method, user equipment, base station and system, the method comprising the following steps of: a user equipment acquiring local public point to multipoint radio bearer parameters allocated by a base station; and the user equipment sending data to the base station according to the local public point to multipoint radio bearer parameters allocated by the base station, thus making the base station to retransmit the data to other user equipments within an area covered by the base station. The method comprises steps of: a base station allocating local public point to multipoint radio bearer parameters to a user equipment; the base station sending the local public point to multipoint radio bearer parameters to the user equipment; and after receiving data sent by the user equipment, sending the data to other user equipments within an area covered by the base station in a predetermined modulation encoding manner. The present invention solves problems that time delay of alarm message notification is uncertain and overlong in the prior LTE technology.

Description

Data transmission method, user equipment, base station and system

This application claims priority to Chinese Patent Application No. 201210123388.5, entitled "Data Transmission Method, User Equipment, Base Station and System", filed on April 24, 2012, the entire contents of In this application.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method, a user equipment, a base station, and a system. Background technique

In the intelligent transportation system, there is a type of application for emergency warning, including: early warning of accidents, early road traffic warning, and so on. When the UE (User Equipment), such as a vehicle, fails or collides, it sends an alarm signal to the intelligent transportation system, and the system notifies other nearby UEs. Such applications require the end-to-end delay of the alarm signal to be in the range of 100 milliseconds. In order to enable more vehicles to implement hedging, improve travel safety and reduce loss of life and property. In the existing LTE (Long Term Evolution) system, after the vehicle collides, it is necessary to first establish a connection with the network side through a complicated signaling process, and then report the emergency data to the peer control center server, and then the server. The relevant information is sent to the nearby UE (vehicle), and the total delay is more than hundreds of milliseconds. The delay may be too long to meet the communication delay requirement of the emergency service, delaying the issuance of the alarm, causing life. property loss. Summary of the invention

In order to solve the problem of the delay uncertainty and the excessive delay of the alarm information notification in the existing LTE technology, the embodiment of the present invention provides a data transmission method, a user equipment, a base station, and a system. The technical solution is as follows:

A data transmission method, the method comprising:

The user equipment acquires local common point-to-multipoint radio bearer parameters allocated by the base station;

And the user equipment sends data to the base station according to the local common point-to-multipoint radio bearer parameter allocated by the base station, so that the base station forwards the data to the user equipment in the coverage area of the base station. A data transmission method includes:

The base station allocates local common point-to-multipoint radio bearer parameters to the user equipment;

Sending, by the base station, the point-to-multipoint radio bearer parameters to the user equipment;

When the data sent by the user equipment is received, the data is sent to the user equipment in the coverage area of the base station according to a preset modulation and coding manner.

A user equipment, including:

An acquiring module, configured to obtain a local common point-to-multipoint radio bearer parameter allocated by the base station, and a sending module, configured to: according to the local common point-to-multipoint radio bearer parameter allocated by the base station acquired by the acquiring module, to the base station Transmitting data such that the base station forwards the data to user equipment in a coverage area of the base station.

A base station comprising:

a distribution module, configured to allocate a local common point-to-multipoint radio bearer parameter to the user equipment, and a sending module, configured to send, to the user equipment, the point-to-multipoint radio bearer parameter that is allocated by the allocating module;

a receiving module, configured to receive data sent by the user equipment;

The sending module is further configured to: when the receiving module receives the data sent by the user equipment, send the data received by the receiving module to a user in a coverage area of the base station according to a preset modulation and coding manner. device.

A data transmission system comprising:

a base station, the base station is configured to allocate a local common point-to-multipoint radio bearer parameter to the user equipment; and send the point-to-multipoint radio bearer parameter to the user equipment; when receiving the data sent by the user equipment, according to the preset The modulation and coding mode sends the data to the user equipment in the coverage area of the base station.

The base station covers two or more user equipments in the area, where the user equipment is used to acquire local common point-to-multipoint radio bearer parameters allocated by the base station; and according to the local common point-to-multipoint radio bearer allocated by the base station And transmitting, to the base station, data, so that the base station forwards the data to a user equipment in a coverage area of the base station.

The data transmission method, the user equipment, the base station, and the system provided by the embodiment of the present invention acquire the local common P2M RB parameters allocated by the base station by using the user equipment; a local common P2M RB parameter, transmitting data to the base station, such that the base station forwards the data to a user equipment in a coverage area of the base station. With the technical solution of the present invention, the user equipment does not need to interact with the core network, and can quickly perform data transmission by using the local common P2M RB parameters allocated by the base station, and the bearer establishment process is simplified, so that the transmission delay is the shortest, and the existing LTE is solved. The uncertainty of delay in notification of alarm information in technology and the problem of excessive delay. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in view of the drawings.

FIG. 1 is a flowchart of a method for data transmission according to an embodiment of the present invention;

2 is a flowchart of a method for data transmission according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for data transmission according to an embodiment of the present invention; FIG.

FIG. 3b is a schematic diagram of a segmentation method according to an embodiment of the present invention; FIG.

4 is a flowchart of a method for data transmission according to an embodiment of the present invention;

FIG. 5 is a flowchart of a method for data transmission according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention. detailed description

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

The local common point-to-multipoint radio bearer parameters (local common P2M (Point to Multipoint) RB (Radio Bearer) parameters mentioned in the following embodiments of the present invention are pre-configured in the LTE system. RB parameters used for P2M transmission.

Example 1

FIG. 1 is a flowchart of a method for data transmission according to an embodiment of the present invention. The execution body of this embodiment is a user equipment. Referring to FIG. 1, the embodiment includes: 101. The user equipment acquires local common point-to-multipoint radio bearer parameters allocated by the base station.

102. The user equipment sends data to the base station according to a local common point-to-multipoint radio bearer parameter allocated by the base station, so that the base station forwards the data to a user equipment in a coverage area of the base station.

With the technical solution of the present invention, the user equipment does not need to interact with the core network, and can quickly perform data transmission by using the local common P2M RB parameters allocated by the base station, and the bearer establishment process is simplified, so that the transmission delay is the shortest, and the existing LTE is solved. The uncertainty of delay in notification of alarm information in technology and the problem of excessive delay. Example 2

FIG. 2 is a flowchart of a method for data transmission according to an embodiment of the present invention. The executor of the embodiment is a base station, and the base station may be an eNB (evolved Node B, an evolved base station) or an RNC (Radio Network Controller) in a WCDMA network. Referring to FIG. 2, the embodiment includes:

201. The base station allocates a local common point-to-multipoint radio bearer parameter to the user equipment.

202. The base station sends the point-to-multipoint radio bearer parameter to the user equipment.

203. When receiving the data sent by the user equipment, send the data to the user equipment in the coverage area of the base station according to a preset modulation and coding manner.

With the technical solution of the present invention, the user equipment does not need to interact with the core network, and can quickly perform data transmission by using the local common P2M RB parameters allocated by the base station, and the bearer establishment process is simplified, so that the transmission delay is the shortest, and the existing LTE is solved. The uncertainty of delay in notification of alarm information in technology and the problem of excessive delay. Example 3

FIG. 3a is a flowchart of a method for data transmission according to an embodiment of the present invention. The user equipment, the user equipment, the user equipment C, and the base station are included in the road traffic system of this embodiment. In this embodiment, the user equipment A is the current faulty vehicle, and the user equipment, the user equipment B, and the user equipment C are in the same base station. The coverage area is described as an example. Referring to FIG. 3, the embodiment includes:

301. User equipment A receives local common P2M RB parameters broadcast by the base station. Different from the prior art, in the LTE system of this embodiment, the local common P2M RB parameter is pre-configured, and the local common P2M RB parameter is specifically a common local P2M RB parameter, and the common local P2M RB parameter is used to configure the base station. The manner of transmitting the uplink data of the user equipment in the coverage area, the base station broadcasts the common local P2M RB parameter, so that the user equipment in the coverage area of the base station includes the public local P2M RB parameter of the base station received by the user equipment A.

The local public P2M RB parameter (which may also be called an RB resource), the local public P2M RB parameter is used to notify the user equipment of the mapping of the physical channel and the transport channel, and the transmission format of the high-level service, and the user equipment according to the configuration. This configured physical channel and transport channel, as well as the transport format, are used to transmit data to meet different business needs. For example, in the local public P2M RB parameter, the RLC (Radio Link Control Layer) layer can be AM (Acknowledged Mode) mode (all data must be acknowledged by feedback) or UM (Unacknowledged Mode, non- The acknowledgment mode mode (data does not require feedback confirmation), the UM mode can be used for services where the delay is sensitive but the accuracy is not high, but for services such as downloads that require high accuracy, the AM mode is required.

The local public P2M RB parameter includes at least the following parameters: a multi-point transmission wireless network temporary identifier;), configured to schedule the user equipment to send uplink data.

P2M-PUCCH config (P2M-Physical Uplink Control Channel), configured with the uplink control channel of the UE, the UE sends CQI on the channel, and HARQ feedback of the downlink data channel Signaling.

P2M-CQI (P2M Channel Quality Indicator) config, which is used to inform the user of the period in which the device feeds back the CQI of which frequency band.

P2M-sounding config: sounding is the uplink pilot. This configuration parameter is used to inform the user equipment of the period and in which frequency band to send the uplink pilot.

P2M-MAC/RLC/PDCP config: Specific parameter configuration of each layer.

302. The user equipment A sends a pilot preamble on the dedicated random access resource.

In this embodiment, the dedicated preamble and/or the dedicated random access resource are allocated in the PRACH (Physical Random Access Channel) resource of the base station, where the dedicated preamble may include one or more preambles. , dedicated random access resources refer to Time-frequency resources of the channel, including time domain resources and/or frequency domain resources. When the user equipment A has an emergency P2M transmission requirement, the user equipment may request the local public P2M RB parameter in any of the following manners: (1) Step 302 in this embodiment; (2) User equipment on the random access resource The base station sends a dedicated preamble; (3) the user equipment sends the dedicated preamble to the base station on the dedicated random access resource; the base station may according to the random access resource and/or the preamble where the received preamble is located It is determined for the dedicated preamble whether the user equipment is requesting P2M parameters.

In order to improve the success rate of the access of the user equipment, the base station broadcasts the dedicated preamble and/or the dedicated random access resource to the user equipment, and the base station may allocate the dedicated preamble or the dedicated random access resource to the user equipment by using the downlink message. The dedicated preamble and/or dedicated random access resources may be configured on the user equipment for use by subsequent request procedures.

303. When the base station determines, according to the received preamble, that the user equipment A requests the local public P2M RB parameter, the local common P2M RB parameter is allocated to the user equipment A.

When the base station receives the preamble sent by the user equipment A, according to whether the random access resource where the preamble is located and/or whether the preamble is a dedicated preamble, it is determined that the user equipment A requests the local public P2M RB parameter, and the local public P2M is allocated to the user equipment A. The RB parameter, and in the subsequent step 304, the local common P2M RB parameter allocated for the user equipment A is carried in the RAR and sent to the user equipment A.

304. The base station sends a RAR (Random Access Response) to the user equipment A, where the RAR carries the local common P2M RB parameter allocated for the user equipment ;;

The step 304 is a process in which the base station sends a point-to-multipoint radio bearer parameter to the user equipment. It should be noted that the RAR not only carries the local common P2M RB parameters allocated by the base station for the user equipment A, but also carries the time-frequency resources used by the base station to send the message allocated to the user equipment A.

In another embodiment, when the local common P2M RB parameter is allocated to the user equipment A, the base station obtains an index value index indicating the local common P2M RB parameter, and uses an index indicating the local common P2M RB parameter. The value index is carried in the RAR and sent to the user equipment A, so that when acquiring the index value, the user equipment A obtains the local common P2M RB parameter allocated by the base station from the previously received local common P2M RB parameters according to the index value.

305. The user equipment A obtains the allocated local common P2M RB parameter, and sends a first message to the base station according to the allocated local common P2M RB parameter, where the first message carries the first data and the BSR MAC. CE (Buffer Status Report - Medium Access Control - Control Element, cache media access control layer unit) and conflict resolution random number MAC CE;

The user equipment A sends a first message to the base station according to the allocated local common P2M RB parameter on the time-frequency resource allocated by the base station, where the first message carries the first data in the cache of the user equipment A, which needs to be explained, because the data format Or the data transmission rate, etc., the data in the cache of the user equipment A may be sent in multiple data packets. In this embodiment, the first data sent in step 305 may be all data in the cache of the user equipment A, or may be a user. A part of the data in the cache of the device A is not specifically limited in this embodiment.

The first message carries the BSR MAC CE of the user equipment A, and the BSR MAC CE is used to notify the base station user equipment A of the amount of data in the current cache.

Different from the prior art, the first message carries the conflict resolution random number MAC CE of the user equipment A. In the prior art, the conflict resolution random number MAC CE is used only for the downlink message, but in this embodiment, Since there may be multiple user equipments requesting the local common P2M RB parameters at the same time, receiving the local common P2M RB parameters allocated by the base station, and sending the first message to the base station according to the allocated local common P2M RB parameters, an uplink conflict occurs. For the base station, only one user equipment is allowed to perform data transmission at a time, in order to solve the uplink conflict, the user equipment is informed whether the first message is successfully sent, and each user equipment needs to carry the user equipment when transmitting data to the base station. The conflict resolves the random number MAC CE, and when the base station successfully receives the uplink data of the user equipment A, the conflict resolution random number MAC CE of the user equipment A is carried in the downlink message (the second message in this embodiment). Multiple user devices, so that user device A knows that the conflict is resolved, and continues to send the number So that the other user equipment learns the conflict is not resolved, continue to attempt access.

306. The user equipment A receives the second message sent by the base station, where the second message carries the conflict resolution random number MAC CE of the user equipment A.

The user equipment A receives the second message, and if the conflict resolution random number MAC CE carried by the second message is consistent with the conflict resolution random number MAC CE of the user equipment A, the conflict of the user equipment A is resolved, and step 307 is continued. Send data to the base station.

307. When there is second data in the buffer of the user equipment A, send the second data to the base station according to the allocated local common P2M RB parameter.

The second data refers to the remaining data in the cache, and the time and frequency used when transmitting the second data. The source is the time-frequency resource allocated in the RAR, which is different from the first data transmission in the step 305, in that, when the second data is sent, since the base station and the user equipment have successfully resolved the conflict, there is no need to carry the conflict resolution MAC CE. .

308. When receiving the data sent by the user equipment, send the data to the user equipment B and the user equipment C in the coverage area of the base station according to a preset modulation and coding manner.

The user equipment that needs to be monitored in the coverage area of the base station uses the static group RNTI of the core network to schedule the downlink transmission. The user equipment that needs to be intercepted obtains the RNTI when it subscribes from the core network, and listens in the IDLE state. In this embodiment, only the user equipment B and the user equipment C in the coverage area of the base station are taken as an example. The user equipment B and the user equipment C acquire the RNTI when signing from the core network, and listen to the RNTI in the idle IDLE state. The UE needs to configure the downlink user plane that is used by default to receive the group scheduling. The configuration can be delivered in the broadcast or in a special type of user equipment chip.

Because the uplink transmission channel condition of the user equipment is uncertain, and the data of one time slot TTI is larger or smaller, if the base station transparently forwards each subframe, the downlink reception may be unreliable or inefficient, so the base station needs to cache the received data. Re-segmentation, that is, when the cached data reaches the size of the preset data packet, the cached data is delivered, and the cached data can be stored and sent, and the data packet size and modulation and coding mode of the buffered data that is delivered are both The base station may be preset, specifically, when the data sent by the user equipment is received, the received data is buffered, and when the buffered data reaches a preset value, the data that reaches the preset value is obtained according to a preset modulation and coding manner. And the user equipment that listens to the RNTI in the coverage area of the base station, that is, the user equipment B and the user equipment C.

FIG. 3b is a schematic diagram of a segmentation method according to an embodiment of the present invention. Referring to FIG. 4, the forwarding buffer may be placed on the RLC or PDCP layer, and the uplink side is specifically a public local P2M parameter protocol stack, and the downlink side is specifically a group scheduling. User face.

309. When the buffer of the user equipment A is empty, send an empty BSR to the base station, so that the base station releases the local common P2M RB parameter allocated to the user equipment A.

310. When the base station receives the empty B SR, the local public P2M RB parameter allocated to the user equipment A is released.

When the base station receives an empty BSR, it can be considered that the data of the user equipment A has been sent, and the local public P2M RB parameters can be released to other user equipments, and released to the user equipment A. Local public P2M RB parameters.

Further, after releasing the local common P2M RB parameter allocated to the user equipment A, the base station sends an ACK message to the user equipment A, so that the user equipment A releases the allocated local common P2M RB parameter after receiving the ACK of the last data packet.

The method provided in this embodiment is such that the user equipment does not need to interact with the core network, and can quickly perform data transmission by using the local common P2M RB parameters allocated by the base station, and the bearer establishment process is simplified, so that the transmission delay is the shortest, and the existing LTE technology is solved. The delay uncertainty of the notification of the alarm information and the problem of excessive delay. Further, by configuring a dedicated preamble and/or a dedicated random access resource, the base station can learn the P2M request of the user equipment, and allocate local common P2M RB parameters to the user equipment, thereby achieving the purpose of streamlining the process. Example 4

FIG. 4 is a flowchart of a method for data transmission according to an embodiment of the present invention. In the road traffic system of this embodiment, the user equipment A, the user equipment, the user equipment C, and the base station are included. In this embodiment, the user equipment A is the current faulty vehicle, and the user equipment, the user equipment B, and the user equipment C are in the same base station. The coverage area is described as an example. The difference between the fourth embodiment and the third embodiment is that the local common P2M RB parameter is not broadcast in the system broadcast, but is only configured on the base station, and is requested by the user equipment to the base station in the RRC process of the user equipment and the base station. Referring to FIG. 4, the embodiment includes:

401. The user equipment A sends a preamble to the base station.

In this embodiment, when the user equipment A has an emergency P2M transmission requirement, it is consistent with the prior art process, and sends a preamble to the base station.

The base station receives the preamble sent by the user equipment A, and sends the RAR to the user equipment A. The steps 401 and 402 are consistent with the processes of sending the preamble and delivering the RAR in the prior art, and details are not described herein.

403. User equipment A sends an RRC connection request to the base station, where the RRC connection request carries a P2M request.

The P2M request is used to request the local public P2M RB parameters configured by the base station, and the specific format may be an existing data format, which is not specifically limited in the embodiment of the present invention. 404. The base station receives the RRC connection request, establishes an RRC connection with the user equipment A, and allocates a local common P2M RB parameter to the user equipment A.

405. The base station sends an RRC connection setup message to the user equipment A, where the RRC connection setup message carries the local common P2M RB parameters allocated by the base station to the user equipment A.

The step 405 is a process in which the base station sends a point-to-multipoint radio bearer parameter to the user equipment.

The RRC establishment process is used to complete the establishment of the SRB, that is, the UE sends an RRC connection request, and the network side responds to the RRC connection establishment, that is, the SRB is established. In this embodiment, the SRB (Signaling Radio Bearer) is established in the RRC process. In the process, the public local P2M RB parameters are configured to the user equipment A as an example. The loopback of the local P2M eliminates the interaction with the core network.

The data transmission process of the step 406-step 411 and the data forwarding process of the base station are the same as those of the step 305-step 310, and details are not described herein again.

The method provided in this embodiment is such that the user equipment does not need to interact with the core network, and can quickly perform data transmission by using the local common P2M RB parameters allocated by the base station, and the bearer establishment process is simplified, so that the transmission delay is the shortest, and the existing LTE technology is solved. The delay uncertainty of the notification of the alarm information and the problem of excessive delay. Further, when the user equipment A has an emergency P2M transmission request, the P2M request is performed in the process of initiating the RRC, so that the urgently reported data can be quickly reported and forwarded, the signaling process is saved, and the interaction between the user equipment and the base station can be ensured. The extension is the shortest. Example 5

FIG. 5 is a flowchart of a method for data transmission according to an embodiment of the present invention. The road traffic system of this embodiment includes user equipment A, user equipment, user equipment C, and base station eNB, with user equipment A as the current faulty vehicle, and user equipment eight, user equipment, and user equipment C in the coverage area of the base station eNB. Give an example for explanation. Both the embodiment 5 and the embodiment 4 request the public local P2M RB parameters in the RRC process, the only difference is that the timing of the request is different. Embodiment 4 performs the request and configuration in the SRB establishment process, and the embodiment is in the DRB ( Data Radio Bearer (Data Radio Bearer), request and configuration during setup, usually completes DRB setup using the RRC reconfiguration process, that is, the UE sends a NAS message, and after receiving the core network (MME), the eNB is informed according to the request of the UE. A DRB is established for the UE, after which the eNB establishes a DRB for the UE using an RRC reconfiguration message. The DRB is a radio bearer used to transmit data.

Referring to FIG. 5, the embodiment includes:

501, user equipment A sends a preamble to the base station;

502. The base station receives the preamble sent by the user equipment A, and sends the RAR to the user equipment A. The steps 501 and 502 are consistent with the processes of sending the preamble and the sending the RAR in the prior art, and details are not described herein again.

503. User equipment A sends an RRC connection request to the base station.

504. The base station receives the RRC connection request, and establishes an RRC connection with user equipment A.

505. The base station sends an RRC connection setup message to user equipment A.

This step 503-505 is consistent with the establishment of the RRC connection process in the prior art, and details are not described herein again.

506. The user equipment A sends an RRC connection setup complete message to the base station, where the RRC connection setup complete message carries the P2M request.

The P2M request is used to request a local common P2M local common P2M RB parameter configured by the base station.

The RRC connection setup complete message refers to an RRC connection setup complete message sent by the user equipment A to the base station after the RRC connection is established.

Those skilled in the art can know that the RRC connection setup complete message also carries the NAS message.

507. When the base station receives the RRC connection setup complete message, and then obtains the P2M request, allocates the local common P2M RB parameter to the user equipment A, and sends an RRC connection reconfiguration message (RRC connection reconfiguration message) to the user equipment, and the RRC connection reconfiguration is performed. The message carries the allocated local public P2M RB parameters;

In the traditional procedure, after the SRB is established, the user equipment uses the RRC connection setup complete to indicate that the SRB is successfully established, and carries the non-access stratum NAS message and transparently transmits the message to the MME. The MME analyzes the service requirements of the user equipment and instructs the eNB how to establish the DRB. The eNB configures the DRB specific parameters in the RRC connection reconfiguration according to the indication of the MME. In this embodiment, the user equipment carries the P2M request in the RRC connection setup complete. After the eNB ignores the indication of the MME, the eNB directly configures the local common P2M RB parameters used by the user equipment for P2M, and carries the parameters to the user equipment in the RRC connection reconfiguration.

In another embodiment, the step 506 may be replaced by the following steps: the user equipment sends an RRC connection setup complete message to the base station, where the RRC connection setup complete message carries a NAS message, and the NAS message carries the P2M request When the base station receives the RRC connection setup complete message, the RRC connection setup complete message carries a NAS message, the NAS message carries the P2M request, and the base station sends the NAS message to the MME, according to the The MME indicates that the local common point-to-multipoint radio bearer parameter is allocated to the user equipment, and sends an RRC connection reconfiguration message to the user equipment, where the RRC connection reconfiguration message carries the local common point-to-point allocation allocated by the base station. Point radio bearer parameters or index values. It can be understood that the user equipment can also carry the P2M request in the NAS message and send it to the MME. The MME instructs the base station to allocate the local common P2M RB parameter to the user equipment, and then the base station carries the allocated local common P2M RB parameter according to the indication of the MME. The RRC connection reconfiguration is sent to the user equipment.

The data transmission process of the step 508-step 513 and the data forwarding process of the base station are the same as those of the step 305-step 310, and details are not described herein again.

The method provided in this embodiment is such that the user equipment does not need to interact with the core network, and can quickly perform data transmission by using the local common P2M RB parameters allocated by the base station, and the bearer establishment process is simplified, so that the transmission delay is the shortest, and the existing LTE technology is solved. The delay uncertainty of the notification of the alarm information and the problem of excessive delay. Further, when the user equipment A has an emergency P2M transmission request, the P2M request is performed in the RRC process, so that the urgently reported data can be quickly reported and forwarded, the signaling process is saved, and the interaction delay between the user equipment and the base station can be ensured. The shortest. Example 6

The difference between the embodiment 6 and the embodiment 3 is that the base station has multiple sets of common local P2M RB parameters, and each group of common local P2M RB parameters is bound to one downlink multicast RNTI, and each group of common local P2M RB parameters has corresponding The dedicated preamble group and/or dedicated random access resources can be understood as the system is not only used for road traffic, but also for other services, and each service corresponds to a static group RNTI for downlink multicast. That is, the user equipment that each service faces is different, and the user equipment that customizes the service only listens to the static group RNTI corresponding to the service type. And that Embodiment 6 is similar to the specific steps of Embodiment 3, except that in Embodiment 6, the local common P2M RB parameters broadcasted by the user equipment A to the base station may be multiple groups, and each group of local common P2M RB parameters corresponds to A service, when the user equipment A has an emergency P2M requirement, the user equipment A uses a dedicated random access resource and/or sends a dedicated preamble. When the base station receives the preamble sent by the user equipment A, according to the preamble or the used The dedicated random access resource determines a corresponding local common P2M RB parameter, and sends the corresponding local common P2M RB parameter to the user equipment A, and when the base station receives the data sent by the user equipment A, the local used according to the data The common P2M RB parameter determines a dedicated user equipment group in the coverage area of the base station, and sends the data to each user equipment in the dedicated user equipment group according to a preset modulation and coding manner, and the local public used by the data The P2M RB parameter is bound to a static group RNTI monitored by each user equipment in the dedicated user equipment group. The other steps of the embodiment 6 are the same as those of the embodiment 3, and details are not described herein again.

In addition, when the user equipment is initially authenticated, the network side informs the RNTI that it should listen to according to its subscription characteristics, and the dedicated preamble and/or dedicated random access resources used for reporting.

In this way, when multiple such services exist at the same time, and the static group RNTI used by each service is different, the base station can determine which RNTI to use for local downlink of the base station by using the local common P2M RB parameter used or competed by the user equipment. Multicast.

Example 7

When the data carries a static group RNTI, each user equipment in the base station area user equipment group is determined according to the static group RNTI, and each user equipment in the dedicated user equipment group listens to the static group RNTI.

The difference between the embodiment 7 and the embodiment 6 is that the service category and the public local P2M RB parameter are not bound, that is, for a plurality of services, a common local P2M RB parameter is used, and a special user is used. When the device is initially authenticated, the network side will inform the RNTI that it should listen according to its subscription characteristics. Different applications/types will be assigned different RNTIs. The seventh embodiment is similar to the specific steps of the embodiment 6. The only difference is that in the seventh embodiment, when the user equipment A has an emergency P2M requirement and has been allocated to the local public P2M RB parameter, according to the local When the public P2M RB parameter sends data to the base station, the data carries a static group RNTI, and the base station according to the static The RNTI determines the dedicated user equipment group in the base station area, and sends the data to each user equipment in the dedicated user equipment group according to a preset modulation and coding manner, and each of the dedicated user equipment groups The user equipment listens to the static group RNTI. Example 8

This embodiment 8 is similar to the embodiment 7. The only difference is that in the embodiment 8, when multiple services/types use a unified static group RNTI, when the base station performs downlink data transmission, when the data carries a dedicated identifier, And sending the data to the user equipment in the coverage area of the base station according to a preset modulation and coding manner, so that the user equipment that meets the specific identifier can parse the data. The dedicated identifier is an application layer identifier, a MAC layer identifier, a dedicated data format, or a destination address, and the like, so that only the user equipment that meets the dedicated identifier can parse the data.

It should be noted that the methods provided in the foregoing Embodiments 1-8 are not limited to the industrial application of intelligent transportation, and may be applicable to other applications that also have short delay and fast forwarding requirements.

Example 9

FIG. 6 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. Referring to Figure 6, the user equipment includes:

The obtaining module 601 is configured to obtain a local common point-to-multipoint radio bearer parameter allocated by the base station, and the sending module 602 is configured to: according to the local common point-to-multipoint radio bearer parameter allocated by the base station acquired by the acquiring module 601, The base station transmits data, so that the base station forwards the data to a user equipment in a coverage area of the base station.

Optionally, the sending module 602 is further configured to send a preamble to the base station on a dedicated random access resource; or, to send a dedicated preamble to the base station on a dedicated random access resource; or A dedicated preamble is sent to the base station on a random access resource.

Optionally, the sending module 602 is further configured to send a point-to-multipoint P2M request to the base station. Optionally, the sending module 602 is further configured to send a radio resource control RRC connection request to the base station, where the RRC connection request carries a point-to-multipoint P2M request; or is further used to send an RRC connection setup to the base station. The RRC connection setup complete message carries the P2M request, or is further configured to send an RRC connection setup complete message to the base station, where the RRC connection setup complete message carries a NAS message, where the NAS message carries the P2M request . Optionally, the acquiring module 601 is specifically configured to receive a random access feedback RAR sent by the base station, where the RAR carries the allocated local common point-to-multipoint radio bearer parameters, and obtains the allocated local public The RRC connection setup message is sent by the base station, where the RRC connection setup message carries the local common point allocated by the base station, when the RRC connection request carries the P2M request. Obtaining the allocated local common point-to-multipoint radio bearer parameter for the multi-point radio bearer parameter; or specifically, when the RRC connection setup complete message carries the P2M request or when the RRC connection is established When the NAS message in the message carries the P2M request, the RRC connection reconfiguration message sent by the base station is received, where the RRC connection reconfiguration message carries the local common point-to-multipoint radio bearer parameter allocated by the base station, and the Assigned local common point-to-multipoint radio bearer parameters.

Optionally, the acquiring module 601 is further configured to receive an index value of the radio bearer parameter allocated by the base station, and obtain the allocated local common point-to-multipoint radio bearer parameter according to the index value.

Optionally, the sending module 602 is specifically configured to send, according to the local common point-to-multipoint radio bearer parameter that is allocated by the base station, a first message to the base station, where the first message carries the first data, the cache data report BSR MAC CE and conflict resolution random number MAC CE;

The sending module 602 is further configured to: when receiving the conflict resolution random number MAC CE sent by the base station, send the second data to the base station;

The sending module 602 is further configured to: when the data in the buffer has been sent, send an empty BSR MAC CE to the base station, so that the base station releases the local common point-to-multipoint radio bearer parameter allocated by the base station.

Optionally, the sending module 602 is further configured to send data that carries the static group RNTI to the base station, so that the base station can schedule the user equipment that listens to the static group RNTI.

It should be noted that, when the user equipment provided by the foregoing embodiment is in the data transmission service, only the division of the foregoing functional modules is illustrated. In actual applications, the foregoing function allocation may be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to perform all or part of the functions described above. In addition, the user equipment and the data transmission method embodiment provided by the foregoing embodiments are in the same concept, and the specific implementation process is described in detail in the method embodiment, and details are not described herein again. Example 10

FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention. Referring to Figure 7, the base station includes:

The allocating module 701 is configured to allocate a local common point-to-multipoint radio bearer parameter to the user equipment, and the sending module 702 is configured to send, to the user equipment, the point-to-multipoint radio bearer parameter that is allocated by the allocating module;

The receiving module 703 is configured to receive data sent by the user equipment.

The sending module 702 is further configured to: when the receiving module 703 receives the data sent by the user equipment, send the data received by the receiving module 703 to the coverage area of the base station according to a preset modulation and coding manner. User equipment within.

Optionally, the receiving module 703 is further configured to receive the user equipment to send a preamble on the dedicated random access resource, or to receive the user equipment to send a dedicated preamble on the dedicated random access resource; or Receiving, by the user equipment, a dedicated reamble to the base station on a random access resource

Optionally, the sending module 702 is specifically configured to send an RAR to the user equipment, where the RAR carries the allocated local common point-to-multipoint radio bearer parameters.

Optionally, the receiving module 703 is further configured to receive a point-to-multipoint P2M request sent by the user equipment.

Optionally, the receiving module 703 is specifically configured to receive an RRC connection request, where the RRC connection request carries a P2M request.

Correspondingly, the sending module 702 is specifically configured to send an RRC connection setup message to the user equipment, where the RRC connection setup message carries a local common point-to-multipoint radio bearer parameter allocated by the base station to the user;

The receiving module 703 is specifically configured to receive an RRC connection setup complete message, where the RRC connection setup complete message carries the P2M request.

Correspondingly, the sending module 702 is specifically configured to send an RRC connection reconfiguration message to the user equipment, where the RRC connection reconfiguration message carries a local common point-to-multipoint wireless bearer parameter allocated by the base station.

Optionally, the receiving module 703 is specifically configured to receive an RRC connection setup complete message, where The RRC connection setup complete message carries a NAS message, and the NAS message carries the P2M request; the allocation module 701 is specifically configured to send the NAS message to the MME, according to the

The indication returned by the MME allocates a local common point-to-multipoint radio bearer parameter to the user equipment;

The sending module 702 is specifically configured to send an RRC connection reconfiguration message to the user equipment, where the RRC connection reconfiguration message carries a local common point-to-multipoint radio bearer parameter allocated to the user equipment.

Optionally, the base station further includes:

The index value obtaining module 704 is configured to obtain an index value of the point-to-multipoint wireless load parameter allocated by the allocating module 701;

The sending module 702 is specifically configured to send, to the user equipment, an index value of the point-to-multipoint radio bearer parameter acquired by the index value obtaining module 704.

Optionally, the allocating module 701 is specifically configured to allocate a local common point-to-multipoint radio bearer parameter corresponding to the dedicated preamble to the user equipment when receiving the dedicated preamble sent by the user equipment;

The allocating module 701 is specifically configured to: when the preamble sent by the user equipment is received on the dedicated random access resource, allocate, to the user equipment, a local common point-to-multipoint radio bearer parameter corresponding to the dedicated preamble; or Specifically, when the dedicated preamble sent by the user equipment is received on the dedicated random access resource, the local common point-to-multipoint radio bearer parameter corresponding to the dedicated preamble is allocated to the user equipment.

Optionally, the sending module 702 is specifically configured to, when receiving data sent by the user equipment, determine, according to the local common point-to-multipoint radio bearer parameter used by the data, each of the base station coverage area household equipment groups. The user equipment, the local common point-to-multipoint radio bearer parameter used by the data is bound to a static group RNTI monitored by each user equipment in the dedicated user equipment group.

Optionally, the sending module 702 is specifically configured to: when the data carries a static group RNTI, determine a dedicated user equipment group in the base station area according to the static group RNTI, and use the data according to a preset modulation and coding manner. And being sent to each user equipment in the dedicated user equipment group, where each user equipment in the special user equipment group listens to the static group RNTI.

Optionally, the sending module 702 is specifically configured to: when the data carries a dedicated identifier, according to the pre The modulation and coding mode is sent to the user equipment in the coverage area of the base station, so that the user equipment that meets the specific identifier can parse the data.

Optionally, the sending module 702 is specifically configured to: when receiving data sent by the user equipment, buffer the received data, and when the buffered data reaches a preset value, the sending the preset value according to a preset modulation and coding manner. The data is sent to the user equipment in the coverage area of the base station.

It should be noted that, when the data transmission service is provided by the base station in the foregoing embodiment, only the division of the foregoing functional modules is illustrated. In actual applications, the function distribution may be completed by different functional modules according to requirements, that is, the device is The internal structure is divided into different functional modules to perform all or part of the functions described above. In addition, the method for implementing the data transmission in the foregoing embodiment is the same as the embodiment of the method for the data transmission. For details, refer to the method embodiment, and details are not described herein again.

Example 11

The embodiment of the invention provides a data transmission system, including:

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

Rights request

A data transmission method, the method comprising:

And the user equipment sends data to the base station according to the local common point-to-multipoint radio bearer parameter allocated by the base station, so that the base station forwards the data to the user equipment in the coverage area of the base station.

The method according to claim 1, wherein before the user equipment acquires the local common point-to-multipoint radio bearer parameters allocated by the base station, the method further includes:

The user equipment sends a pilot preamble to the base station on a dedicated random access resource; or the user equipment sends a dedicated preamble to the base station on a dedicated random access resource; or the user equipment is in a random access resource Sending a dedicated preamble to the base station.

The user equipment sends a point-to-multipoint P2M request to the base station.

The method according to claim 3, wherein the sending, by the user equipment, the point-to-multipoint P2M request to the base station comprises:

The user equipment sends a radio resource control RRC connection request to the base station, where the RRC connection request carries a point-to-multipoint P2M request;

Or,

The user equipment sends an RRC connection setup complete message to the base station, where the RRC connection setup complete message carries the P2M request;

Or,

The user equipment sends an RRC connection setup complete message to the base station, where the RRC connection setup complete message carries a NAS message, and the NAS message carries the P2M request.

The method according to claim 4, wherein the user equipment acquires local common point-to-multipoint radio bearer parameters allocated by the base station, including:

Receiving, by the user equipment, a random access feedback RAR sent by the base station, where the RAR carries the allocated local common point-to-multipoint radio bearer parameters, and the user equipment acquires the allocated local common point-to-multipoint wireless Carrying parameters; or, When the RRC connection request carries a P2M request, the user equipment receives an RRC connection setup message sent by the base station, where the RRC connection setup message carries a local common point-to-multipoint radio bearer parameter allocated by the base station, The user equipment acquires the allocated local common point-to-multipoint radio bearer parameters; or

When the RRC connection setup complete message carries the P2M request or when the NAS message in the RRC connection setup complete message carries the P2M request, the user equipment receives the RRC connection reconfiguration message sent by the base station. And the RRC connection reconfiguration message carries the local common point-to-multipoint radio bearer parameter allocated by the base station, and the user equipment acquires the allocated local common point-to-multipoint radio bearer parameter.

The method according to claim 5, wherein the user equipment acquires local common point-to-multipoint radio bearer parameters allocated by the base station, including:

The user equipment receives an index value of a radio bearer parameter allocated by the base station, and obtains the allocated local common point-to-multipoint radio bearer parameter according to the index value.

The method according to claim 1, wherein the user equipment sends data to the base station according to the local common point-to-multipoint radio bearer parameter allocated by the base station, including: Transmitting, by the base station, the local common point-to-multipoint radio bearer parameter, sending a first message to the base station, where the first message carries the first data, the buffered data report BSR MAC CE, and the conflict resolution random number MAC CE;

Receiving, by the user equipment, the conflict resolution random number MAC CE sent by the base station, and sending the second data to the base station;

After the data in the buffer of the user equipment has been sent, the empty BSR MAC CE is sent to the base station, so that the base station releases the local common point-to-multipoint radio bearer parameters allocated by the base station.

The method according to any one of claims 1 to 7, wherein the sending data to the base station comprises:

The data carrying the static group RNTI is sent to the base station, so that the base station can schedule the user equipment that listens to the static group RNTI.

9. A data transmission method, comprising: The base station allocates local common point-to-multipoint radio bearer parameters to the user equipment;

The method according to claim 9, wherein before the base station allocates a local common point-to-multipoint radio bearer parameter to the user equipment, the method further includes:

The base station receives the user equipment to send a preamble on the dedicated random access resource; or the base station receives the user equipment to send a dedicated preamble on the dedicated random access resource; or

The base station receives the user equipment to send a dedicated preamble to the base station on a random access resource.

The method according to claim 9, wherein the sending, by the base station, the point-to-multipoint radio bearer parameters to the user equipment, includes:

The base station sends an RAR to the user equipment, where the RAR carries the allocated local common point-to-multipoint radio bearer parameters.

The base station receives a point-to-multipoint P2M request sent by the user equipment.

13. The method of claim 12, wherein

Receiving, by the base station, the point-to-multipoint P2M request sent by the user equipment includes:

The base station receives an RRC connection request, and the RRC connection request carries a P2M request. The base station sends the point-to-multipoint radio bearer parameter to the user equipment, where the base station sends an RRC connection to the user equipment. Establishing a message, where the RRC connection setup message carries a local common point-to-multipoint radio bearer parameter allocated by the base station to the user; or the base station receiving the point-to-multipoint P2M request sent by the user equipment includes:

Receiving, by the base station, an RRC connection setup complete message, where the RRC connection setup complete message carries the P2M request;

And sending, by the base station, the point-to-multipoint radio bearer parameter to the user equipment, where: the base station sends an RRC connection reconfiguration message to the user equipment, where the RRC connection reconfiguration is performed. The information carries the local common point-to-multipoint radio bearer parameters allocated by the base station.

14. The method of claim 12, wherein

Receiving, by the base station, an RRC connection setup complete message, where the RRC connection setup complete message carries a NAS message, where the NAS message carries the P2M request;

The base station allocates local common point-to-multipoint radio bearer parameters for the user equipment, including:

The base station sends the NAS message to the MME, and allocates a local common point-to-multipoint radio bearer parameter to the user equipment according to the indication returned by the MME;

And sending, by the base station, the point-to-multipoint radio bearer parameter to the user equipment, where: the base station sends an RRC connection reconfiguration message to the user equipment, where the RRC connection reconfiguration message carries the local area allocated by the base station Common point-to-multipoint radio bearer parameters.

The method according to any one of claims 9 to 14, wherein before the sending, by the base station, the point-to-multipoint radio bearer parameter to the user equipment, the method further includes:

Obtaining, by the base station, an index value of the point-to-multipoint radio bearer parameter;

And sending, by the base station, the point-to-multipoint radio bearer parameter to the user equipment, where: the base station sends an index value of the point-to-multipoint radio bearer parameter to the user equipment.

The method according to claim 10, wherein the base station allocates a local common point-to-multipoint radio bearer parameter to the user equipment, including:

When the base station receives the dedicated preamble sent by the user equipment, the base station allocates the local common point-to-multipoint radio bearer parameter corresponding to the dedicated preamble to the user equipment; or

When the base station receives the preamble sent by the user equipment on the dedicated random access resource, the base station allocates the local common point-to-multipoint radio bearer parameter corresponding to the dedicated preamble to the user equipment; or

When the base station receives the dedicated preamble sent by the user equipment on the dedicated random access resource, the base station allocates the local common point-to-multipoint radio bearer parameter corresponding to the dedicated preamble to the user equipment.

The method according to claim 9, wherein when the data sent by the user equipment is received, the data is sent to the user in the coverage area of the base station according to a preset modulation and coding manner. Equipment, including:

Determining, according to the local common point-to-multipoint radio bearer parameter used by the data, a dedicated user equipment group in the coverage area of the base station, and receiving the data according to a preset modulation and coding manner, when receiving data sent by the user equipment. And being sent to each user equipment in the dedicated user equipment group, where the local common point-to-multipoint radio bearer parameters used by the data are bound to the static group RNTI monitored by each user equipment in the dedicated user equipment group. .

The method according to claim 9, wherein when the data sent by the user equipment is received, the data is sent to the user equipment in the coverage area of the base station according to a preset modulation and coding manner, including:

When the data carries a dedicated identifier, the data is sent to the user equipment in the coverage area of the base station according to a preset modulation and coding manner, so that the user equipment that meets the specific identifier can parse the data.

The method according to any one of claims 9 to 19, wherein when the data sent by the user equipment is received, the data is sent to the coverage area of the base station according to a preset modulation and coding manner. User equipment, including:

When the data sent by the user equipment is received, the received data is buffered, and when the buffered data reaches a preset value, the data that reaches the preset value is sent to the coverage area of the base station according to a preset modulation and coding manner. User equipment.

21. A user equipment, comprising:

An acquiring module, configured to acquire a local common point-to-multipoint radio bearer parameter allocated by the base station, and a sending module, configured to use, according to the local common point point allocated by the base station, acquired by the acquiring module Point radio bearer parameters, and send data to the base station, so that the base station forwards the data to user equipment in the coverage area of the base station.

22. The user equipment according to claim 21, wherein

The sending module is further configured to send a preamble to the base station on a dedicated random access resource; or send a dedicated preamble to the base station on a dedicated random access resource; or send a dedicated to the base station on a random access resource Preamble.

The user equipment according to claim 21, wherein the sending module is further configured to send a point-to-multipoint P2M request to the base station.

24. The user equipment of claim 23, wherein

The sending module is further configured to send a radio resource control RRC connection request to the base station, where

The RRC connection request carries a point-to-multipoint P2M request, or sends an RRC connection setup complete message to the base station, where the RRC connection setup complete message carries the P2M request, or sends an RRC connection setup complete message to the base station, where The RRC connection setup complete message carries a NAS message, and the NAS message carries the P2M request.

25. The user equipment of claim 24, wherein

The acquiring module is specifically configured to receive a random access feedback RAR sent by the base station, where the RAR carries the allocated local common point-to-multipoint radio bearer parameters, and obtain the allocated local common point-to-multipoint wireless The RRC connection setup message is sent by the base station, and the RRC connection setup message carries the local common point-to-multipoint radio bearer allocated by the base station, when the RRC connection request carries the P2M request. And obtaining, by the parameter, the local common point-to-multipoint radio bearer parameter of the allocation; or, specifically, when the RRC connection setup complete message carries the P2M request or when the NAS message in the RRC connection setup complete message is received Receiving the P2M request, receiving an RRC connection reconfiguration message sent by the base station, where the RRC connection reconfiguration message carries a local common point-to-multipoint radio bearer parameter allocated by the base station, and acquiring the allocated local common point Multi-point radio bearer parameters.

The user equipment according to claim 25, wherein the acquiring module is further configured to receive an index value of a radio bearer parameter allocated by the base station, and obtain the allocated local common point-to-multipoint according to the index value. Wireless bearer parameters.

The user equipment according to claim 21, wherein the sending module is specific The first message is sent to the base station according to the local common point-to-multipoint radio bearer parameter allocated by the base station, where the first message carries the first data, the buffer data report BSR MAC CE, and the conflict resolution random number MAC CE;

The sending module is further configured to: when receiving the conflict resolution random number MAC CE sent by the base station, send the second data to the base station;

The sending module is further configured to: when the data in the buffer has been sent, send an empty BSR MAC CE to the base station, so that the base station releases the local common point-to-multipoint radio bearer parameter allocated by the base station.

The user equipment according to any one of claims 21 to 27, wherein the sending module is further configured to send, to the base station, data carrying a static group RNTI, so that the base station can The user equipment of the static group RNTI performs scheduling.

29. A base station, comprising:

a receiving module, configured to receive data sent by the user equipment;

The base station according to claim 29, wherein the receiving module is further configured to receive the user equipment to send a preamble on a dedicated random access resource, or to receive the user equipment in a dedicated random manner. Sending a dedicated preamble on the access resource; or for receiving the user equipment to send a dedicated preamble to the base station on the random access resource.

The base station according to claim 29, wherein the sending module is specifically configured to send an RAR to the user equipment, where the RAR carries the allocated local common point-to-multipoint radio bearer parameters.

The base station according to claim 30, wherein the receiving module is further configured to receive a point-to-multipoint P2M request sent by the user equipment.

33. The base station according to claim 32, wherein

The receiving module is specifically configured to receive an RRC connection request, where the RRC connection request carries a P2M request;

Correspondingly, the sending module is specifically configured to send an RRC connection setup message to the user equipment, where the RRC connection setup message carries a local common point-to-multipoint wireless bearer parameter allocated by the base station to the user;

The receiving module is specifically configured to receive an RRC connection setup complete message, where the RRC connection setup complete message carries the P2M request;

Correspondingly, the sending module is specifically configured to send an RRC connection reconfiguration message to the user equipment, where the RRC connection reconfiguration message carries a local common point-to-multipoint radio bearer parameter allocated by the base station.

34. The base station according to claim 32, wherein

The receiving module is specifically configured to receive an RRC connection setup complete message, where the RRC connection setup complete message carries a NAS message, where the NAS message carries the P2M request;

The allocating module is configured to send the NAS message to the MME, and allocate local common point-to-multipoint radio bearer parameters to the user equipment according to the indication returned by the MME;

The sending module is specifically configured to send an RRC connection reconfiguration message to the user equipment, where the RRC connection reconfiguration message carries a local common point-to-multipoint radio bearer parameter allocated to the user equipment.

The base station according to any one of claims 29 to 34, wherein the base station further comprises:

An index value obtaining module, configured to acquire an index value of the point-to-multipoint radio bearer parameter allocated by the allocating module;

The sending module is specifically configured to send, to the user equipment, an index value of the point-to-multipoint radio bearer parameter acquired by the index value acquiring module.

The base station according to claim 30, wherein the allocating module is configured to: when receiving the dedicated preamble sent by the user equipment, allocate, to the user equipment, a local common point corresponding to the dedicated preamble Multi-point radio bearer parameters;

The allocating module is specifically configured to: when the user equipment is received on a dedicated random access resource When the preamble is sent, the user equipment is allocated a local common point-to-multipoint radio bearer parameter corresponding to the dedicated preamble; or specifically when the dedicated preamble sent by the user equipment is received on the dedicated random access resource. And allocating, to the user equipment, a local common point-to-multipoint radio bearer parameter corresponding to the dedicated preamble.

The base station according to claim 29, wherein the sending module is specifically configured to: when receiving data sent by the user equipment, determine, according to the local common point-to-multipoint radio bearer parameter used by the data Dedicating a user equipment group in a coverage area of the base station, and transmitting the data to each user equipment in the dedicated user equipment group according to a preset modulation and coding manner, and the local common point-to-multipoint wireless used by the data The bearer parameters are bound to the static group RNTI monitored by each user equipment in the dedicated user equipment group.

The base station according to claim 29, wherein the sending module is specifically configured to: when the data carries a static group RNTI, determine each user in the standby group in the base station area according to the static group RNTI The device, each user equipment in the dedicated user equipment group, listens to the static group RNTI.

The base station according to claim 29, wherein the sending module is configured to: when the data carries a dedicated identifier, send the data to the coverage area of the base station according to a preset modulation and coding manner. The user equipment enables the user equipment that conforms to the dedicated identification to parse the data.

The base station according to any one of claims 29 to 39, wherein the sending module is specifically configured to: when receiving data sent by the user equipment, buffer the received data, when the cached data reaches a preset The value is sent to the user equipment in the coverage area of the base station according to the preset modulation and coding mode.

41. A data transmission system, comprising:

a base station, the base station is configured to allocate a local common point-to-multipoint radio bearer parameter to the user equipment; and send the point-to-multipoint radio bearer parameter to the user equipment; when receiving the data sent by the user equipment, according to the preset Transmitting the data to the user equipment in the coverage area of the base station;

The base station covers two or more user equipments in the area, and the user equipment is used to obtain Local common point-to-multipoint radio bearer parameters allocated by the base station; transmitting data to the base station according to local common point-to-multipoint radio bearer parameters allocated by the base station, so that the base station forwards the data to the base station for coverage User equipment in the zone.