Notification method of random access initiating, notification method of random access resource, and main base station

A technology of random access and master base station, applied in wireless communication, electrical components and other directions, can solve the problems of many competing RAs, conflicts, consumption of system resources, etc., and achieve the effect of random access to prevent competition

Active Publication Date: 2013-07-03
HUAWEI TECH CO LTD
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Problems solved by technology

[0007] However, in the above scheme, due to competing RAs, the preamble code (preambl) in its message 1 (msg1) is selected by the UE itself, and other UEs may send the same preamble code at the same ti

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  • Notification method of random access initiating, notification method of random access resource, and main base station
  • Notification method of random access initiating, notification method of random access resource, and main base station
  • Notification method of random access initiating, notification method of random access resource, and main base station

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[0036] The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

[0037] In the embodiment of the present invention, the primary base station instructs the user equipment or the secondary base station to initiate random access through the second notification message, or sends resources for random access, or allocates data transmission resources to realize the transmission of downlink data or uplink data, thereby avoiding In this way, the user equipment monitors the physical downlink control channel command PDCCH order on each base station eNB participating in the aggregated carrier, or prevents the user equipment from initiating competitive random access.

[0038] In each subframe in the LTE system, it must be ensured that the data transmitted by all UEs in the same cell arrive at the eNB at the same time, otherwise interference will occur. Since the distance between each UE and the eNB is differen...

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Abstract

The embodiment of the invention relates to a notification method of random access initiating, a notification method of a random access resource, a notification method of a data transmission resource, and a main base station. The notification method of the random access initiating comprises the steps that the main base station receives first notification information from source equipment; the first notification information indicates data of the source equipment to be transmitted to target equipment; the main base station sends second notification information to the target equipment; and the second notification information indicates the target equipment to initiate random access to the source equipment. With the adoption of the notification methods and the main base station, physical downlink control channel commands on various base stations are prevented from being monitored by user equipment.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method for notifying initiation of random access, a method for notifying random access resources, a method for notifying data transmission resources and a main base station. Background technique [0002] With the development of the mobile communication system, in the mobile communication system, for example, a long term evolution (Long term evolution, LTE for short) system, a carrier aggregation (Carrier Aggregation, CA for short) technology is introduced. Carrier aggregation means that a user equipment (User Equipment, UE for short) can simultaneously use multiple component carriers (Component Carrier, CC for short) for uplink and downlink communication, thereby supporting higher-speed data transmission. According to the base station to which the aggregated carrier belongs, the carrier aggregation can be divided into intra-base station cell aggregation, inter-base s...

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Application Information

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IPC IPC(8): H04W68/00H04W74/08
CPCH04W74/08
Inventor 黄曲芳曾清海
Owner HUAWEI TECH CO LTD
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