Intra-cell handover method and intra-cell handover equipment

An intra-cell handover and cell technology, applied in the field of intra-cell handover methods and devices, can solve problems such as unspecified specific procedures, and achieve the effects of avoiding re-establishment and updating of security parameters and business interruption.

Inactive Publication Date: 2013-04-03
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] However, the 3GPP agreement does not specify the sp

Method used

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  • Intra-cell handover method and intra-cell handover equipment
  • Intra-cell handover method and intra-cell handover equipment
  • Intra-cell handover method and intra-cell handover equipment

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0078] Example one:

[0079] The specific process is as Figure 5a Shown:

[0080] Step S01: After the terminal receives and receives a certain amount of data or repeatedly establishes and deletes bearers for a certain number of times, the base station of the serving cell initiates an intra-cell handover.

[0081] Step S02: The base station of the serving cell sends an RRC connection reconfiguration message carrying a handover command to the terminal, where the target cell carried in the handover parameter is the current cell, that is, the cell where the terminal is located before handover, and carries the updated security parameters, including Encryption and decryption keys and integrity protection keys. In particular, the handover parameter also carries the new C-RNTI allocated for the terminal but does not carry the dedicated preamble code. As shown in Table 1 below, the new C-RNTI is different from the C-RNTI used by the terminal before the handover.

[0082]

[0083]

[0084] Ta...

Example Embodiment

[0100] Embodiment two:

[0101] The specific process is as Figure 5b Shown:

[0102] Step S11: After the terminal receives and receives a certain amount of data or repeatedly establishes and deletes the bearer for a certain number of times, the base station of the serving cell initiates an intra-cell handover.

[0103] Step S12: The base station of the serving cell sends an RRC connection reconfiguration message carrying a handover command to the UE. The target cell carried in the handover parameter is the current cell, that is, the cell where the UE is before handover, and carries the updated security parameters, including Encryption and decryption keys and integrity protection keys. In particular, the handover parameter also carries the dedicated preamble code but does not carry the new C-RNTI allocated for the UE.

[0104] Step S13: The behaviors of the L2 protocol layers of the base station of the serving cell are as follows:

[0105] The PDCP layer stops sending downlink data (i...

Example Embodiment

[0117] Example three:

[0118] The specific process is as Figure 5c Shown:

[0119] Step S21: After the terminal receives and receives a certain amount of data or repeatedly establishes and deletes bearers for a certain number of times, the base station of the serving cell initiates an intra-cell handover.

[0120] Step S22: The base station of the serving cell sends an RRC connection reconfiguration message carrying a handover command to the UE. The target cell carried in the handover parameter is the current cell, that is, the cell where the UE is before handover, and carries the updated security parameters, including Encryption and decryption keys and integrity protection keys. In particular, the handover parameter also carries a dedicated preamble code and a new C-RNTI allocated for the UE.

[0121] Step S23: The behaviors of the L2 protocol layers of the base station of the serving cell are as follows:

[0122] The PDCP layer stops sending downlink data (including signaling data...

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Abstract

An embodiment of the invention discloses an intra-cell handover method and intra-cell handover equipment, and relates to the field of wireless communication. The intra-cell handover method and the intra-cell handover equipment are used for implementing an intra-cell handover scheme capable of preventing chaos of data transmission and receiving. The intra-cell handover method includes that a base station transmits radio resource control (RRC) connection reconfiguration information which carries a new cell radio network temporary identifier C-RNTI and/or a special preamble to a terminal after determining that intra-cell handover operation is required to be initiated for the terminal; and a layer 2 is reconstructed and safety parameters are updated if the base station receives a random access request or uplink data, the random access request is transmitted by the terminal and carries the special preamble, and the uplink data are transmitted by the terminal and carry the new C-RNTI. The intra-cell handover method and the intra-cell handover equipment have the advantage that the intra-cell handover scheme capable of preventing the chaos of data transmission and receiving is implemented.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to an intra-cell handover method and equipment. Background technique [0002] The 3rd Generation Partnership Project (3GPP) agreement clearly stipulates the specific process of inter-base station handover and data switching of the Long Term Evolution (LTE) system. figure 1 It specifically describes the specific process of handover between base stations under the condition that the mobility management entity (Mobility Management Entity, MME) and the serving gateway (Serving GW, SGW) remain unchanged. [0003] Step 1: The source base station configures the measurement of the user equipment (User Equipment, UE) according to the geographical restriction information, and the measurement is helpful for the mobile connection of the UE. [0004] Step 2: UE sends a measurement report to the source base station according to system information and other indicators. [0005] Step...

Claims

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Application Information

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IPC IPC(8): H04W36/06
Inventor 周宇恒
Owner DATANG MOBILE COMM EQUIP CO LTD
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