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Method and device of retransmitting data in a mobile communication system

A technology of a mobile communication system and a communication method, which is applied in the communication field based on an automatic repeat request method

Inactive Publication Date: 2009-12-02
LG ELECTRONICS INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, despite several retransmissions, the problems in the corresponding parts cannot be solved by combining

Method used

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  • Method and device of retransmitting data in a mobile communication system
  • Method and device of retransmitting data in a mobile communication system
  • Method and device of retransmitting data in a mobile communication system

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Embodiment Construction

[0038] The structure, operation and advantages of the present invention will now be described in detail with reference to preferred examples of the invention, examples of which are illustrated in the accompanying drawings.

[0039] Figure 4 Preferred embodiments of the present invention are described. exist Figure 4 In the embodiments of the present invention, the technical characteristics of the present invention are all applied in the 3GPP HSDPA (High Speed ​​Downlink Packet Access) system.

[0040] HSDPA improves the performance of the existing downlink shared channel (DSCH) to provide high-speed data transmission services with a maximum speed of 10M bit rate for the downlink. Examples of radio access technologies adopted by the physical layer of the HSPDA system include Link Adaptation (LA) method and HARQ method. The LA method adopts a modulation and coding method (MCS) suitable for the channel state, which is applicable regardless of when the packet (or sub-packet) ...

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Abstract

The invention discloses a method of retransmitting data in a a mobile communication system, a transmitter and a receiver. A communication method according to an automatic repeat request scheme in a mobile communication system includes transmitting a retransmission packet per certain time period (periodically) in response to NACK of a first user equipment related to a first packet transmitted within a frame group consisting of a plurality of successive frames, and transmitting a retransmission packet non-periodically in response to NACK of a second user equipment related to a second packet transmitted within the frame group.

Description

technical field [0001] The present invention relates to a mobile communication system, more specifically, to a communication method based on automatic repeat request (ARQ) in the mobile communication system. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) systems and their analogs define resource blocks in the time-frequency domain and use them as a single unit. figure 1 Describes an example of resource blocks defined in the time-frequency domain, where a block represents a resource block, and each resource block consists of N subcarriers and M subframes (or durations), where N and M are random number. [0003] Meanwhile, in the downlink, the base station allocates at least one resource block to the selected specific user equipment according to a given scheduling rule, and transmits data through the corresponding resource block. Similarly, in the uplink, if the base station selects a specific user equipment according to a given scheduling ru...

Claims

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Application Information

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IPC IPC(8): H04W28/04
CPCH04L1/0071H04L1/0083H04L1/1621H04L1/1867
Inventor 安俊基金奉会尹宁佑徐东延李正薰金银善金学成金沂濬尹硕铉
Owner LG ELECTRONICS INC
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