Method, eNB and UE for small data transmission

A small data transmission, user terminal technology, applied in the direction of electrical components, wireless communication, connection management, etc., can solve the problems that the security of the access layer is not considered, and the security of the signaling access layer is difficult to solve, etc., to achieve signaling simplification, The effect of saving the connection establishment process

Active Publication Date: 2014-11-12
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current small data transmission solution, although the transmission process is simplified, it is difficult to solve the security problem of

Method used

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  • Method, eNB and UE for small data transmission
  • Method, eNB and UE for small data transmission
  • Method, eNB and UE for small data transmission

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0157] Example 1

[0158] like Figure 8 As shown, the small data transmission process for the resident eNB to provide services includes:

[0159] Step 1. When there is uplink small data to send, the UE initiates a random access procedure and sends a random access request to the serving eNB.

[0160] Step 2, the serving eNB sends a random access response to the UE.

[0161] In step 3, the UE sends an RRC connection establishment request to the serving eNB according to the received random access response.

[0162] Step 4, the serving eNB sends an RRC connection establishment message to the UE for establishing the RRC connection of the UE.

[0163] Step 5: After the UE establishes the RRC connection, it sends an RRC connection establishment complete message to the serving eNB. If the UE has stored the routing identifier of the eNB where it resides, the routing identifier is carried in the message.

[0164] If a fast transmission method such as Fast Path or Connectionless tra...

Example Embodiment

[0179] Example 2

[0180] like Figure 9 As shown, the resident eNB refuses to provide services, and the data transmission process between the access network and the core network does not use the Fast Path or Connectionless transmission scheme, specifically including:

[0181] Step 1. When there is uplink small data to send, the UE initiates a random access procedure and sends a random access request to the serving eNB.

[0182] Step 2, the serving eNB sends a random access response to the UE.

[0183] In step 3, the UE sends an RRC connection establishment request to the UE according to the received random access response.

[0184] Step 4, the serving eNB sends an RRC connection establishment message to the UE for establishing the RRC connection of the UE.

[0185] Step 5: After establishing the RRC connection, the UE sends an RRC establishment complete message to the serving eNB. If the UE has saved the routing identifier of the eNB where it resides, the routing identifie...

Example Embodiment

[0199] Example 3

[0200] like Figure 10 , the resident eNB does not provide services, and the data transmission process between the access network and the core network adopts the Fast Path or Connectionless transmission scheme, including:

[0201] Step 1. When there is uplink small data to send, the UE initiates a random access procedure and sends a random access request to the serving eNB.

[0202] Step 2, the serving eNB sends a random access response to the UE.

[0203] In step 3, the UE sends an RRC connection establishment request to the UE according to the received random access response.

[0204] Step 4, the serving eNB sends an RRC connection establishment message to the UE for establishing the RRC connection of the UE.

[0205] Step 5: After establishing the RRC connection, the UE sends a connection establishment complete message to the serving eNB. If the UE has saved the routing identifier of the eNB where it resides, the routing identifier is carried in the me...

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Abstract

The invention provides a method, eNB and user terminal for small data transmission. When UE establishes a link, the eNB in service can provide a route identification for the UE, and the route identification becomes a residence eNB of the UE, and after connection is released, the residence eNB still saves contextual information of the UE; when the UE moves to other eNBs and initiates small data transmission, the current eNB in service finds out the residence eNB of the UE according to the route identification reported by the UE, user plane data are transmitted between the current eNB in service and the residence eNB, the residence eNB is in charge of PDCP layer processing of the user plane data and core network transmission, and the eNB in service is in charge of other layer processing of the user plane data; if the UE still initiates a connection request on the residence eNB, the residence eNB can directly use the saved contextual information for establishing user plane connection with AS layer security. The AS layer security settlement mechanism is provided for small data transmission, and a simplifying effect on signaling is achieved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a small data transmission method, an evolved base station and a user terminal. Background technique [0002] 1) LTE system structure [0003] The LTE (Long Term Evolution, long-term evolution) system network architecture is as follows: figure 1 As shown, in order to facilitate the development of new services, the LTE system adopts the design method of separating the user plane and the control plane. S-GW (Service Gateway, Service Gateway)) is responsible. The main functions of MME are NAS (Non Access Stratum, non-access stratum) signaling establishment, NAS signaling security, cross-core network signaling establishment, tracking service (when UE is in idle IDLE mode), roaming service, authorization and Bearer management, etc. S-GW is the gateway point when the evolved base station eNB is switched, the gateway point for forwarding 2G / 3G and other system ...

Claims

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Application Information

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IPC IPC(8): H04W76/04H04W12/08
Inventor 张惠英鲍炜陈东
Owner DATANG MOBILE COMM EQUIP CO LTD
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