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Method and apparatus for data security and automatic repeat request implementation in a wireless communication system

An automatic repeat request, wireless communication system technology, applied in wireless communication, transmission systems, security devices, etc., can solve problems such as collaborative work, ignoring external ARQ, unable to meet LTE security requirements and data retransmission performance requirements.

Inactive Publication Date: 2009-02-11
INTERDIGITAL TECH CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this brand new LTE network architecture, the problem is where to locate the external ARQ entity and the data security entity, and how to make these two previously identically located entities work together in the LTE system
However, the disadvantage of this approach is that it does not take into account the external ARQ
[0008] Simply putting the data security entity into the eNode-B 220 or placing the external ARQ entity into the aGW 230 cannot meet the LTE security requirements and data retransmission performance requirements

Method used

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  • Method and apparatus for data security and automatic repeat request implementation in a wireless communication system
  • Method and apparatus for data security and automatic repeat request implementation in a wireless communication system
  • Method and apparatus for data security and automatic repeat request implementation in a wireless communication system

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Embodiment

[0038] 1. A wireless communication system for implementing data security and ARQ.

[0039] 2. The system as described in embodiment 1, which includes WTRU, Node-B and aGW.

[0040] 3. The system of embodiment 2, wherein the WTRU includes a first encryption entity that performs encryption on uplink data blocks for transmission, and performs decryption on downlink data blocks encrypted by the aGW.

[0041] 4. The system of embodiment 3, wherein the WTRU includes a first external ARQ entity, which is the transmission of uplink data blocks encrypted by the first encryption entity and downlink data between the WTRU and the Node-B The reception of the block performs an ARQ operation.

[0042] 5. The system according to any one of embodiments 2 to 4, wherein the Node-B includes a second external ARQ entity, which is the reception of uplink data blocks and the downlink between the WTRU and the Node-B The transmission of road data blocks performs an ARQ operation.

[0043] 6. The system ac...

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Abstract

A method and apparatus for implementing data security and automatic repeat request (ARQ) in a wireless communication system are disclosed. Cipher entities are included in a wireless transmit / receive unit (WTRU) and an access gateway (aGW), and outer ARQ, (or radio link control (RLC)), entities are included in the WTRU and an evolved Node-B (eNode-B). Each cipher entity is located on top of an outer ARQ entity. The cipher entities cipher and decipher a data block by using a generic sequence number (SN) assigned to the data block. The outer ARQ entities may segment the ciphered data block to multiple packet data units (PDUs), may concatenate multiple ciphered data blocks to a PDU, or may generate one PDU from one data block. The outer ARQ entities may segment or re-segment the PDU when a transmission failure occurs.

Description

Technical field [0001] The present invention relates to a wireless communication system. In particular, the present invention relates to a method and device for implementing data security and automatic repeat request (ARQ) in a wireless communication system. Background technique [0002] At present, the Third Generation Partnership Project (3GPP) has launched the Long Term Evolution (LTE) project, which can bring new technologies, new network architectures and configurations, and new applications and services to wireless cellular networks. Improve the spectrum efficiency, shorten the waiting time, accelerate the user experience, and provide lower cost and richer applications and services. [0003] In wireless communication networks, user data privacy and user data accuracy are always the main concerns. Data privacy and data accuracy are solved by encrypting data blocks (that is, encrypting user data and control messages) and implementing the ARQ protocol in the data path to recov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04W12/02H04W80/02
CPCH04L1/0007H04L1/1867H04W80/02H04L63/0428H04L1/18H04W12/02H04L1/1809H04W12/037H04L9/00H04L1/1896H04W72/0446
Inventor 彼得·S·王史蒂芬·E·泰利乌利斯·奥维拉-赫恩安德茨
Owner INTERDIGITAL TECH CORP
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