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A small data transmission method and evolved base station and user terminal

A small data transmission and user terminal technology, applied in electrical components, wireless communication, connection management and other directions, can solve the problems of not considering the security of the access layer and the difficulty of solving the security of the signaling access layer, and achieve simplified signaling, The effect of saving the connection establishment process

Active Publication Date: 2018-05-11
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 the signaling access layer. Most of the solutions do not consider the security of the access layer, and only use NAS encryption to ensure security.

Method used

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  • A small data transmission method and evolved base station and user terminal
  • A small data transmission method and evolved base station and user terminal
  • A small data transmission method and evolved base station and user terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 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 transmission scheme is ...

Embodiment 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 identifier is carried in the ...

Embodiment 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 message. If the Fast ...

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Abstract

The present invention provides a small data transmission method, eNB and UE. When the UE establishes a link, the serving eNB can provide the UE with a routing identifier to become the resident eNB of the UE. After the connection is released, the resident eNB still saves the UE context information; when the UE moves to another eNB and initiates small data transmission, the current serving eNB finds the UE’s resident eNB according to the routing identifier reported by the UE, and transmits user plane data between the current serving eNB and the resident eNB, The resident eNB is responsible for PDCP layer processing of user plane data and core network transmission, and the serving eNB is responsible for other layer processing of user plane data; if the UE is still in the resident eNB to initiate a connection request, the resident eNB can directly use the saved context information for the The UE establishes a user plane connection with AS layer security. The invention provides an AS layer security solution mechanism for small data transmission, and also plays a role in simplifying signaling.

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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Patent Type & Authority Patents(China)
IPC IPC(8): H04W76/20H04W12/08
Inventor 张惠英鲍炜陈东
Owner DATANG MOBILE COMM EQUIP CO LTD
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