WO2010108412A1

WO2010108412A1 - Method and apparatus for transmitting data package

Info

Publication number: WO2010108412A1
Application number: PCT/CN2010/071037
Authority: WO
Inventors: 王可; 彭炎
Original assignee: 华为技术有限公司
Priority date: 2009-03-23
Filing date: 2010-03-15
Publication date: 2010-09-30
Also published as: CN101848056A; CN101848056B

Abstract

A method and apparatus for transmitting data package, relating to communication field, are invented for solving the problem in the prior art of excessive data quantity of unvalid information in data packages and wasting transmission source. The method includes: receiving user data；transmitting a first data package which carries a user local identifier and includes the user data according to the mapping relationship between a user identifier within the coverage area of the evolved node base station and a user local identifier within the local coverage area；or receiving a second data package which carries the user local identifier transmitted by the evolved node base station, wherein the second data package is transmitted according to the mapping relationship between a user identifier within the coverage area of the evolved node base station and the user local identifier within the local coverage area; transmitting the data in the second data package to the corresponding user according to the user local identifier in the second data package, in which the length of the user local identifier is less than the length of the user identifier. The technical scheme can be applied to transmit the data package.

Description

The present invention claims the priority of the Chinese patent application filed on March 23, 2009, the Chinese Patent Office, the application number is 200910128475. 8, the invention name is "data packet transmission method and device". The entire contents of this application are incorporated herein by reference. The present invention relates to the field of communications, and in particular, to a data packet transmission method and transmission apparatus. BACKGROUND In a mobile communication system, an evolved base station encapsulates data sent to a user into a data packet, and adds an addressing identifier to the identification area of the data packet for indicating a data packet to an RN (Relay Node) The data in the data belongs to the user, and the data packet after the identification is sent to the RN through the tunnel, and the RN sends the data in the data packet to the corresponding user according to the addressing identifier in the data packet. For example, the address identifier added by the evolved base station in the identification area of the data packet is a C-RNTI (Cell Radio Network Temporary Identity), and after receiving the data packet carrying the C-RNTI identifier, the relay node receives the data packet carrying the C-RNTI identifier. Sending data in the data packet to the corresponding user according to the C-RNTI identifier of the identification area.

The inventor has found that at least the following problems exist in the prior art: when transmitting data packets between the evolved base station and the RN, it is required to consume more air interface resources to transmit non-effective data in the data packet, which wastes more transmission resources and reduces the number of transmission resources. The efficiency of the transmission. Summary of the invention

Embodiments of the present invention provide a data packet transmission method and apparatus, which can save system resources and improve transmission efficiency when transmitting data packets.

In one aspect, an embodiment of the present invention provides a method for transmitting a data packet, including:

Receiving, by the user, the first data packet carrying the local identifier of the user, where the first data packet is included, according to the mapping relationship between the user identifier of the user in the coverage of the evolved base station and the local identifier of the user in the local coverage. The user's data; or,

Receiving, by the evolved base station, a second data packet that carries a local identifier of the user, where the second data packet is based on And sending, by the user, a mapping relationship between the user identifier in the coverage of the evolved base station and the local identifier of the user in the local coverage, and the data in the second data packet according to the local identifier of the user in the second data packet Send to the corresponding user;

The length of the user local identifier is less than the length of the user identifier.

The embodiment of the invention further provides a transmission device, including:

An uplink transmission module, configured to receive data of a user, and send a first data packet carrying a local identifier of the user according to a mapping relationship between the user identifier of the user in the coverage of the evolved base station and the local identifier of the user in the local coverage area, where The first data packet includes data of the user; or,

a downlink transmission module, configured to receive a second data packet that is sent by the evolved base station and that carries the user local identifier, where the second data packet is based on the user identifier of the user in the coverage of the evolved base station and the user local in the local coverage area. Sending, by the identified mapping relationship, the data in the second data packet to the corresponding user according to the local identifier of the user in the second data packet;

The method and device for transmitting a data packet provided by the embodiment of the present invention adds a user local identifier whose length is smaller than the user identifier in the identification area of the data packet, and is used for identifying the user between the evolved base station and the relay node, and reducing the invalidity in the data packet. The amount of data of the data, thereby achieving the purpose of saving transmission resources, and improving the transmission efficiency of the data packet. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in 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. For those skilled in the art, other drawings may be obtained based on these drawings without paying for creative labor.

FIG. 1 is an application scenario of transmitting a data packet according to an embodiment of the present invention;

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

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

4 is a schematic structural diagram of a data packet transmission apparatus according to an embodiment of the present invention;

FIG. 5 is another schematic structural diagram of a data packet transmission apparatus according to an embodiment of the present invention. The technical solutions in the embodiments of the present invention are clear and complete in the following with reference to the accompanying drawings in the embodiments of the present invention. It is apparent that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In order to make the technical solutions provided by the embodiments of the present invention more clearly understood by those skilled in the art, the method for transmitting data packets provided by the embodiments of the present invention is described in detail below:

As shown in FIG. 1 , at least one RN in the coverage of the evolved base station, wherein each RN has at least one user in the coverage area. The RN1 and the RN2 are covered by one eNB, the RN1 is covered by the RN1, the RN2 is covered by the RN5, the RN5 is covered by the UE2, the UE3 and the UE4, the other eNB is covered by the RN3 and the RN4, and the RN3 is covered by the UE5. The UE6 is covered under the RN4. For example, the evolved base station sends data to the user, where the evolved base station obtains data sent to the user, where the data may be service data or a control command, and configures the user who receives the data and determines the addressing identifier corresponding to the user. Based on the determined addressing identifier, it is determined which coverage of the relay node the user is located within. The data of the user located in the same relay node is encapsulated into the payload area of the data packet, and the addressing identifier corresponding to the data in the payload area is added in the identification area of the data packet. After receiving the data packet, the RN sends the data in the data packet to the corresponding user according to the user indicated by the addressing identifier in the data packet. For example, in the prior art, a C-RNTI having a length of 16 bits is added to the identification area, and the C-RNTI identifier is a user identifier for identifying a user within the coverage of the evolved base station.

The method for transmitting a data packet provided by the embodiment of the present invention is described in detail below with reference to the application scenario provided by the embodiment of the present invention.

The data packet transmission between the user and the evolved base station includes two transmission directions: uplink transmission, that is, the user sends the data sent to the evolved base station to the RN, and the RN forwards the received data to the evolved base station in the form of a data packet; That is, the evolved base station sends the data sent to the user to the RN in the form of a data packet, and the RN receives the data packet and forwards the data in the data packet to the corresponding user.

An embodiment of the present invention provides a method for transmitting a data packet. In this embodiment, an uplink transmission is performed by using a data packet as an example. As shown in FIG. 2, the method includes:

The S20K RN receives the user's data.

In the embodiment of the present invention, the RN allocates a unique channel for transmitting data to the user, and records a user identifier corresponding to the user who uses the channel to transmit data. When receiving the data, the RN determines, according to the channel used in the data transmission process, which user the data comes from, and obtains the user identifier of the user.

Before determining the user identifier corresponding to the data by using the channel for transmitting data, the method further includes: recording a user identifier corresponding to each channel for transmitting data in the coverage area of the RN. In the embodiment of the present invention, there are at least one RN in the coverage of the evolved base station, where there is at least one user in the coverage of each RN. When the user joins the RN within the coverage of the evolved base station, the user will get a user identifier for identifying the user within the coverage of the evolved base station, that is, each RN within the coverage of the evolved base station can identify the user by using the user identifier. The user identifier may be that the evolved base station detects that the user joins the RN, and sends the message carrying the user identifier to the user, and notifies the RN of the user to the distribution result; or the user is added to the evolved base station. After the RN, the unused user identifier is sent to the RN where the user is located, and the user identifier is assigned to the user by the RN. After the RN is allocated, the (evolved base station) acquires the user identifier of the user from the RN. The length of the user identifier may be determined by the total number of users in the coverage of the evolved base station. After the evolved base station and the RN determine the user identity of the user, the RN allocates a channel for transmitting data to the user, and records a user identifier corresponding to the user transmitting the data using the channel.

S202. The RN sends a data packet carrying the local identifier of the user according to the mapping relationship between the user identifier of the user in the coverage of the evolved base station and the local identifier of the user in the local coverage, where the data packet includes data of the user.

The user local identifier is used to identify the user within the coverage of the RN, and the length is less than the length of the user identifier.

Specifically, the mapping between the user identifier and the local identifier of the user is searched for, according to the user identifier of the user, the local identifier of the user corresponding to the data is determined, and the determined local identifier of the user is used as a relay. The addressing identifier of the user is identified on the link. In the embodiment of the present invention, the transmission link between the RN and the evolved base station is referred to as a relay link. According to the user's local identifier of the user, the evolved base station and the RN where the user is located can identify the user, and the other RNs within the coverage of the evolved base station cannot identify the user according to the local identifier of the user.

After determining the local identifier of the user corresponding to the data, the load of the air interface is determined according to the availability of the air interface resource. According to the determined carrying capacity, data of at least one user is selected as the data to be sent from the received data. Encapsulating the data of the same user in the data to be sent into a data block, adding the encapsulated data block to the payload area of the data packet, and adding the data in the identification area of the data packet according to the order of adding the data block User local ID corresponding to the data block.

Further, in order to maximize the application of the air interface resource and improve the data transmission efficiency, when the data volume of the to-be-sent data is different from the bearer amount, that is, when the remaining bearer amount is greater than the remaining bearer threshold, the remaining reception may be selected. In the data, a user data with a large amount of data is selected, and from the data with an excessive amount of data, a part of the data whose data amount is smaller than the remaining carrying amount is segmented, and the amount of data is less than the remaining carrying amount. Part of the data is added to the data to be sent, and the data packet to be sent after the data is added is encapsulated into a data packet and sent out. For example, the RN 5 is used as an example. The RN 5 receives the data of the UE 2 with the data amount A, the data of the UE 3 whose data amount is B, and the data of the UE 4 whose data amount is C. The user local identifier corresponding to the data is Local_ID2. , Local_ID3 and Local_ID4, according to the availability of the air interface resource, determining that the bearer of the air interface is No. According to the determined bearer quantity, the data of UE2 and UE3 is selected as the data to be sent from the received data, where A+B<N, The data of the above two users are respectively packaged into a UE2 data block and a UE3 data block, and are sequentially added to the payload area of the data packet, and the user local identifiers Local_ID2 and Local_ID3 are sequentially added in the identification area of the data packet according to the order of adding the data block. . The data packet after adding the user local identifier is sent to the evolved base station.

If the data amount of the data to be sent differs from the bearer amount, that is, N-(A+B)>a, where N is the bearer of the air interface, and A+B is the data volume of the data to be sent, N- (A +B) is the remaining load capacity, a is the remaining load capacity threshold. Then, the data of the UE4 with the data amount C is divided into a partial data with a data amount smaller than N-(A+B), and the partial data with the data amount smaller than N-(A+B) is added to the data to be sent, and The data packet to be sent after the data is added is encapsulated into a data packet and sent out.

It should be noted that the user local identifier in the embodiment of the present invention is applied to the relay link between the evolved base station and the RN, and the addressing identifier used to identify the user is the user on the transmission link between the RN and the user. The RN can ensure that the RN can manage the users in the local coverage according to the methods in the prior art, for example, the scheduling of the user and the security authentication of the user, so that different RNs can complete the user according to the user identifier of the user. Identification and management to achieve user compatibility within different RN coverage.

The data packet transmission method provided by the embodiment of the present invention adds a user local identifier whose length is smaller than the user identifier in the identification area of the data packet, and is used for identifying the user on the relay link, and reducing the data amount of the non-effective data in the data packet. Thereby achieving the purpose of saving transmission resources and improving the transmission efficiency of data packets. Because the user's local ID is applied to the relay link, the RN does not affect the user's local coverage, ensuring user compatibility.

An embodiment of the present invention provides another method for transmitting a data packet. In this embodiment, a downlink transmission of a data packet is taken as an example. As shown in FIG. 3, the method includes:

The S30K RN receives the data packet that carries the local identifier of the user and is sent by the evolved base station.

The data packet is sent according to a mapping relationship between the user identifier of the user in the coverage of the evolved base station and the local identifier of the user in the local coverage of the RN.

In the embodiment of the present invention, the receiving methods in the prior art are all applicable to this step, and details are not described herein again. The performing base station sends a data packet carrying the local identifier of the user, and the specific process is as follows:

The evolved base station acquires data addressed to the user and determines the user identity of the user. Determining, according to the user identifier, a local user identifier corresponding to the user identifier from the locally saved mapping relationship, and determining the determined user The local identifier is used as the addressing identifier to send the data of the user. For the specific implementation method, refer to the method in S202 in the foregoing embodiment, and details are not described herein again.

S302. The RN sends the data in the data packet to the corresponding user according to the local identifier of the user in the data packet.

In the embodiment of the present invention, at least one user local identifier is obtained from the identification area in the data packet. And determining, according to the user local identifier in the identifier area, the user identifier corresponding to the user local identifier from the locally saved mapping relationship, and determining the user identifier corresponding to the data block in the payload area of the data packet. A channel for transmitting the data block is determined based on the determined user identification. The data block is transmitted to the corresponding user by the determined channel.

For example, taking RN5 as an example, the local identifiers of the users in the identified area in the received data packets are Local_ID2, Local_ID3, and Local_ID4. From the locally saved mapping relationship, the corresponding user identifier is determined to be the user identifier of UE2, the user identifier of UE3, and the user identifier of UE4. And determining, according to the user identifier, a correspondence between the data block in the data packet and the three user identifiers. And determining, according to the user identifier, a channel for transmitting the UE2 data block, the UE3 data block, and the UE4 data block, and transmitting the three data blocks to the corresponding user by using the determined channel.

It should be noted that the method for the RN to identify and manage the user in the local coverage may refer to the method in the embodiment shown in FIG. 2, and details are not described herein again.

In the embodiment of the present invention, when the device of the mobile communication system is started, the mapping relationship between the user identifier of the user and the local identifier of the user needs to be established between the RN and the evolved base station. The mapping relationship may be set by an RN or an evolved base station.

The RN sets the mapping relationship of the user and sends the set result to the evolved base station. The specific process is as follows: The RN obtains the coverage of the local signal, and counts the total number of users in the coverage, and obtains the maximum number of users in a period of time. If the total number of users is less than 64, the length of the user local identifier is set to 6 bits; if the maximum number of users is greater than or equal to 64 and less than 128, the length of the user local identifier is set to 7 bits; If the value is greater than or equal to 128 and less than 256, the length of the user local identifier is set to 8; and so on. Since the coverage of the RN with a smaller coverage area is much smaller, the total number of users in the RN coverage is much smaller than the total number of users in the coverage of the cell, so the length of the user local identifier is smaller than the length of the user identifier. Assign a user local ID to each user according to the determined length, and record the user ID of the user and The mapping relationship of the assigned user local ID. The mapping relationship is sent to the evolved base station.

Optionally, after the mapping is sent, the RN receives a request for determining whether the received mapping relationship is correct, the confirmation request includes the received mapping relationship, and determines the mapping relationship and the received information in the confirmation request. Whether the mapping relationship is consistent. If they are consistent, the eNodeB is notified to confirm that the result is correct. Otherwise, the eNodeB is notified to confirm the result of the error, and the erroneous mapping relationship is replaced with the correct mapping relationship and sent to the evolved base station.

The other is that the RN obtains the mapping relationship of the user from the evolved base station. The specific process is as follows:

The RN obtains the mapping relationship of the user in various forms. For example, after receiving the mapping relationship set by the evolved base station, the RN may also send a request to the evolved base station, and request the evolved base station to send a mapping request of the user, where the mapping relationship sent by the evolved base station is local. The mapping relationship of users within the coverage.

The specific process of setting the mapping relationship of the user by the evolved base station is as follows:

The eNodeB determines the length of the user local identifier in each RN according to the coverage of each RN and the total number of users in the coverage area. The method for setting the local identifier length of the user is the same as the method for setting the RN, and is not described here. User local identifiers are assigned to users in each RN coverage area, and the assigned user local identifiers and user identifiers are sent to the corresponding RNs.

Optionally, after receiving the mapping relationship sent by the evolved base station, the RN sends an acknowledgment request, to confirm, to the evolved base station, whether the received mapping relationship is correct. If the acknowledgment result sent by the evolved base station indicates that the received mapping relationship is correct, the received mapping relationship is saved; if the acknowledgment message indicates that the received mapping relationship is incorrect, the acknowledgment message includes the correct mapping relationship. Then, in combination with the correct mapping relationship in the confirmation result, the received mapping relationship is modified, and the modified mapping relationship is saved.

After the mapping relationship is established, the RN has saved the mapping relationship of each user in the coverage area, and the evolved base station has saved the mapping relationship of each RN record in the coverage area, so that the RN and the evolved base station save the mapping relationship of all users in the coverage area. . For the process of the RN transmitting the data packet to the evolved base station by using the above-mentioned mapping relationship, refer to the method in the embodiment shown in FIG. 2, and the process of sending the data packet to the user may refer to the method in the embodiment shown in FIG.

In the embodiment of the present invention, after the mapping relationship is established, the saved mapping relationship needs to be updated, and the update process is as follows:

If the mapping relationship is set by the RN, the RN detects that a user is added to the RN in the local coverage, where the user Joining to the RN can be added in two ways. One is that the user switches from the evolved base station in the local cell to the RN in the local cell, and the other is to switch from the evolved base station in the neighbor cell to the RN in the local cell. The RN selects a user local identifier from the local user identifier that is not used locally, and assigns the selected user local identifier to the newly added user, and records the mapping relationship between the user identifier of the newly added user and the local identifier of the user, and newly joins the user. The mapping relationship is notified to the evolved base station, so that the evolved base station adds the mapping relationship of the newly added user. When the user in the local coverage area leaves the RN, the user identifier of the user has been obtained, and the mapping relationship of the user has been determined according to the user identifier, the determined mapping relationship is deleted, and the evolved base station is deleted. The mapping relationship that has left the user. Optionally, in order to use the user local identifier reasonably, after the mapping relationship is deleted locally, the user local identifier in the deleted mapping relationship is released, and becomes an unused user local identifier, and the released user local identifier may be Continue to be assigned to other newly joined users.

The manner in which the RN notifies the evolved base station to update the mapping relationship may be in various forms, for example, selecting an unused field from a reserved field or an extended field in an existing message, and adding the selected field to the selected unused field. Update information of the mapping relationship, including the mapping relationship to be updated and the processing method. The existing message includes any message sent by the RN to the evolved base station. For example, when the evolved base station is notified to delete the mapping relationship, the mapping relationship to be updated is added in the unused field, and is added to indicate the evolved base station. And adding a message to notify the evolved base station to update the mapping relationship. When the RN notifies the evolved base station to delete the mapping relationship, the mapping relationship to be added is added to the newly added message, and added. The information indicating that the evolved base station performs the adding process. The foregoing method is used to notify the evolved base station to delete the mapping relationship, which is similar to the foregoing manner, and details are not described herein again.

Optionally, after receiving the update request of the mapping relationship, the RN receives the acknowledgment whether the mapping relationship in the received update request is correct, where the acknowledgment request includes a mapping relationship to be updated and processing information, and the acknowledgment request is determined. Whether the mapping relationship and processing information are consistent with the mapping relationship and processing information in the update request, if they are consistent, notify the evolved base station that the confirmation result is correct; otherwise, notify the evolved base station to confirm the result of the error, and replace the incorrect update information with the correct one. The update information is sent to the evolved base station.

If the mapping relationship is set by the evolved base station, when the RN receives the update request of the mapping relationship, the RN obtains the mapping relationship from the update request, and operates the mapping relationship according to the processing information in the update request. If the processing information is an adding operation, adding the mapping relationship in the update request to the locally saved mapping relationship; if the processing information is a deleting operation, searching for the mapping relationship in the locally saved mapping relationship, Determining the mapping relationship to be deleted, and deleting the determined mapping relationship.

The process in which the evolved base station sends the update request of the mapping relationship is as follows:

When the evolved base station detects that there is a user within the coverage of the RN, the unused user saved from the evolved base station In the local identifier, a user local identifier is selected, and the selected user local identifier is assigned to the newly added user, and the mapping relationship between the user identifier of the newly added user and the local identifier of the user is recorded, and the mapping relationship of the newly added user is notified to the RN. , causing the RN to add the mapping relationship of the newly added user. Determining the user identifier of the user that has left the user, and determining the mapping relationship of the user that has left the user according to the user identifier, deleting the determined mapping relationship, and notifying the RN to delete the user. Describe the mapping relationship that has left the user. Optionally, in order to use the user local identifier reasonably, after the mapping relationship is deleted locally, the user local identifier in the deleted mapping relationship is released, and becomes an unused user local identifier, and the released user local identifier may be Continue to be assigned to other newly joined users.

Optionally, when receiving the update request of the mapping relationship, confirm, to the evolved base station, whether the mapping relationship and the processing information in the update request are correct. If the information in the update request is correct in the confirmation result sent by the evolved base station, the mapping relationship is added or deleted; if the confirmation result indicates that the mapping relationship is incorrect, the confirmation result further includes the correct The mapping relationship adds or deletes the correct mapping relationship in the confirmation result.

The manner in which the RN sends the confirmation request to the evolved base station may be in various forms, for example, selecting an unused field from the reserved field or the extended field in the existing message, and adding the selected field to the selected unused field. Update information of the mapping relationship, including the mapping relationship to be updated and the processing method. The existing message includes any message sent by the RN to the evolved base station. For example, when the evolved base station is notified to delete the mapping relationship, the mapping relationship to be updated is added in the unused field, and is added to indicate the evolved base station. An identifier for performing the adding process; or adding a message for confirming the update request to the evolved base station, and when receiving the update request of the mapping relationship, adding the mapping relationship and the processed information to the newly added message. Whether the received update request is correct is confirmed to the evolved base station by the above method.

After updating the mapping relationship, the RN has saved the mapping relationship of each user in the coverage area, and the evolved base station has saved the mapping relationship of each RN record in the coverage area, so that the RN and the evolved base station both save the mapping relationship of all users in the coverage area. . For the process of the RN transmitting the data packet to the evolved base station by using the above-mentioned mapping relationship, refer to the method in the embodiment shown in FIG. 2, and the process of sending the data packet to the user may refer to the method in the embodiment shown in FIG.

As shown in FIG. 4, an embodiment of the present invention provides a data packet transmission apparatus 40, including: The uplink transmission module 401 is configured to receive data of the user, and send an uplink data packet carrying the local identifier of the user according to the mapping relationship between the user identifier of the user in the coverage of the evolved base station and the local identifier of the user in the local coverage area. The uplink data packet includes data of the user;

Or the transmission device 40 includes:

The downlink transmission module 40Γ receives a downlink data packet that is sent by the evolved base station and carries the user local identifier, where the downlink data packet is a mapping according to the user identifier of the user in the coverage of the evolved base station and the local identifier of the user in the local coverage range. If the relationship is sent, the data in the downlink data packet is sent to the corresponding user according to the local identifier of the user in the downlink data packet.

Further, as shown in FIG. 4, the data transmission device 40 may further include:

The mapping relationship establishing module 4011 is configured to determine a length of the local identifier of the user, and set a mapping relationship between the user identifier in the coverage of the evolved base station and the local identifier of the user in the local coverage according to the determined length of the local identifier of the user.

Alternatively, as shown in FIG. 5, the transmission device 40 further includes:

The mapping relationship obtaining module 4012 is configured to obtain a mapping relationship between the user identifier in the coverage of the evolved base station set by the evolved base station and the local identifier of the user in the local coverage.

Further, the data transmission device 40 may further include:

The mapping relationship update module 402 is configured to: when the mapping relationship establishing module 4011 is established, if a new user is added locally, a corresponding user local identifier is set for the newly added user, and the newly added user mapping relationship is added. And sending an add request that includes the newly added user mapping relationship to the evolved base station; if the local user leaves, notifying the evolved base station to delete the departed user mapping relationship; or

When the mapping relationship is obtained by the mapping relationship obtaining module 4012, if the adding request including the newly added user mapping relationship is received, the newly added user mapping relationship included in the adding request is locally saved; if the inclusion is received When the deletion request of the user mapping relationship has been left, the departed user mapping relationship in the deletion request is deleted in the locally saved mapping relationship.

Further, the data transmission device 40 may further include:

The mapping relationship confirmation module 403 is configured to: after the mapping relationship establishing module 4011 notifies the mapping relationship to be established, or after updating the mapping relationship that is notified by the mapping relationship updating module 402, receive the acknowledgment mapping relationship or update the mapping relationship sent by the evolved base station. Reply; or,

After the mapping relationship obtaining module 4012 acquires the mapping relationship, or in the mapping relationship update module After obtaining the update mapping relationship update, the 402 sends a reply confirming the mapping relationship or updating the mapping relationship.

The data packet transmission apparatus provided by the embodiment of the present invention adds a user local identifier whose length is smaller than the user identifier in the identification area of the data packet, and is used for identifying the user on the relay link, and reducing the data amount of the non-effective data in the data packet. Thereby achieving the purpose of saving transmission resources and improving the transmission efficiency of data packets. Because the user's local ID is applied to the relay link, the RN does not affect the user's local coverage, ensuring user compatibility.

A person skilled in the art can understand that all or part of the steps carried by the method of the foregoing embodiment can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. , including one or a combination of the steps of the method embodiments.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. The integrated module can also be stored in a computer readable storage medium if it is implemented as a software function module and sold or used as a standalone product.

The above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

A method for transmitting a data packet, comprising:

The relay node receives the data sent by the user, and sends an uplink data packet carrying the user local identifier to the evolved base station according to the mapping relationship between the user identifier of the user in the coverage of the evolved base station and the user local identifier in the local coverage area. The uplink data packet includes data of the user; or

And receiving, by the evolved base station, a downlink data packet that carries a user local identifier, where the downlink data packet is sent according to a mapping relationship between the user identifier of the user in the coverage of the evolved base station and the local identifier of the user in the local coverage area, according to the Decoding a user local identifier in the downlink data packet, and sending the data in the downlink data packet to a corresponding user;

The method for transmitting a data packet according to claim 1, wherein the mapping relationship is set by a local setting or an evolved base station, and includes:

Determine the length of the user's local identity;

And determining, according to the determined length of the local identifier of the user, a mapping between the user local identifier and the user identifier in the coverage of the evolved base station and the local identifier of the user in the local coverage.

3. The method according to claim 2, further comprising:

If a new user joins the local node, the corresponding user local identifier is set for the newly added user, and the newly added user mapping relationship of the newly added user is added, and the adding request including the newly added user mapping relationship is sent to the evolved base station; Or receiving an add request that is sent by the evolved base station, and the add-on request sent by the evolved base station is set by the eNodeB to set a corresponding user local identifier for the newly added user, and add the new join user map. Send after the relationship.

4. The method according to claim 3, further comprising:

If the add request including the newly added user mapping relationship sent by the evolved base station is received, the newly added user mapping relationship in the add request is locally saved.

5. The method according to claim 2, further comprising:

If the local user leaves, the deletion request is sent to the evolved base station, and the deletion request sent by the evolved base station is deleted. The request is sent by the evolved base station when a local user leaves.

6. The method according to claim 5, further comprising:

If the deletion request sent by the evolved base station and the left user mapping relationship is received, the local protection is performed. The left user mapping relationship in the deletion request is deleted in the stored mapping relationship.

7. The method according to claim 3, further comprising:

After sending the add request including the newly added user mapping relationship to the evolved base station, receiving a reply sent by the evolved base station to add a new access user mapping relationship, the reply being the newly added user mapping relationship in the adding request by the evolved base station Send after confirming the addition.

8. The method according to claim 5, further comprising:

After sending the deletion request that includes the departed user mapping relationship to the evolved base station, receiving a reply sent by the evolved base station to delete the departed user mapping relationship, where the reply is mapped by the evolved base station to the departed user in the deletion request The relationship is sent after deletion confirmation.

9. The method according to claim 4, further comprising:

After the newly added user mapping relationship in the adding request is locally saved, a confirmation reply for adding a newly added user mapping relationship is sent to the evolved base station.

10. The method according to claim 6, further comprising:

After deleting the departed user mapping relationship in the deletion request in the locally saved mapping relationship, the acknowledgment reply for deleting the departed user mapping relationship is sent to the evolved base station.

11. A transmission device, comprising:

The uplink transmission module is configured to receive data sent by the user, and send an uplink data packet carrying the local identifier of the user according to the mapping relationship between the user identifier of the user in the coverage of the evolved base station and the local identifier of the user in the local coverage area. The uplink data packet includes data of the user;

Alternatively, the transmission device includes:

a downlink transmission module, configured to receive a downlink data packet that is sent by the evolved base station and that carries the user local identifier, where the downlink data packet is based on the user identifier of the user in the coverage of the evolved base station and the local identifier of the user in the local coverage area. And sending, by the mapping relationship, the data in the downlink data packet to the corresponding user according to the local identifier of the user in the downlink data packet;

The transmission device according to claim 11, further comprising:

a mapping relationship establishing module, configured to determine a length of the local identifier of the user, and set a mapping relationship between the user identifier in the coverage of the evolved base station and the local identifier of the user in the local coverage according to the determined length of the local identifier of the user;

Or the transmitting device further includes: The mapping relationship obtaining module is configured to obtain a mapping relationship between the user identifier in the coverage of the evolved base station set by the evolved base station and the local identifier of the user in the local coverage.

The transmission device according to claim 12, further comprising:

a mapping relationship update module, configured to: when the mapping relationship establishing module is established, if a new user is added locally, a corresponding user local identifier is set for the newly added user, and the newly added user mapping relationship is added, and the sending is performed. Adding a request to the evolved base station to include the newly added user mapping relationship; and if the local user leaves, notifying the evolved base station to delete the departed user mapping relationship; or

When the mapping relationship is obtained by the mapping relationship obtaining module, if the adding request including the newly added user mapping relationship is received, the newly added user mapping relationship included in the adding request is locally saved; if the inclusion includes When the deletion request of the user mapping relationship is left, the departed user mapping relationship in the deletion request is deleted in the locally saved mapping relationship.

The transmission device according to claim 13, further comprising:

a mapping relationship confirmation module, configured to: after the mapping relationship establishing module notifies the mapping relationship, or after updating the mapping relationship notified by the mapping relationship update module, receiving a reply of the acknowledgment mapping relationship or the updated mapping relationship sent by the evolved base station; Or,

And after the mapping relationship acquiring module acquires the mapping relationship, or after the mapping relationship updating module acquires the updated mapping relationship update, sends a reply confirming the mapping relationship or updating the mapping relationship.