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Macrodiversity processing method for supporting soft hand-off technique in the centralized base station

A centralized, soft handover technology, applied in space transmit diversity, diversity/multi-antenna systems, power management, etc., can solve problems such as discontinuous hard handover of baseband signal processing resources

Inactive Publication Date: 2009-04-22
UTSTARCOM TELECOM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] By using this technology, it not only solves the hard handover problem caused by discontinuous baseband signal processing resources in large-scale centralized base stations, but also makes the allocation of channel processing resources in centralized base stations more flexible, without being limited by the mobility of mobile terminals Impact

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  • Macrodiversity processing method for supporting soft hand-off technique in the centralized base station
  • Macrodiversity processing method for supporting soft hand-off technique in the centralized base station
  • Macrodiversity processing method for supporting soft hand-off technique in the centralized base station

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Embodiment Construction

[0022] As mentioned above, since the baseband signal processing resources of a large-scale centralized base station are composed of multiple relatively independent channel processing units, and each channel processing unit can only process a certain number of RRU signals at the same time, Therefore, when the RRU radio signals corresponding to the cell involved in the handover of the mobile terminal cannot be switched to the same channel processing unit due to the limitation of the number of RRU signals of the channel processing unit, in order to maintain a single user plane for the interface between the centralized base station and the BSC / RNC In the prior art, the data channel needs to be hard handed over, so the gain of soft handover and softer handover cannot be obtained, thus adversely affecting the wireless performance of the system.

[0023] For this reason, according to the present invention, a macro-diversity processing unit supporting soft handover function is added in...

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Abstract

The invention relates to a soft hand-off method in the centralized base station system. According to the invention, in the case of the mobile terminal performs hand-off, several radio links is synchronously established for the mobile terminal wherein the physical channel processing in the several radio links are achieved by different channel processing units in the multiple channel processing unit; and each radio link in the several different channel processing units perform selective diversity, thus, the mobile terminal can achieve the soft hand-off. Therefore, it solves the hard hand-off problem that happened in the centralized base station system, and it makes the assignment for the channel processing resource in the centralized base station flexible, but is it not limited in the effect of mobility of the mobile terminal.

Description

technical field [0001] The invention relates to the technical field of distributed base stations in a mobile communication system, in particular to a method for system resource control and soft handover in a centralized base station system using remote radio frequency units. Background technique [0002] In a mobile communication system, a radio access network typically consists of a base station (BTS) and a base station controller (BSC) or radio network controller (RNC) for controlling multiple base stations, as shown in Figure 1A, where the base station It is mainly composed of baseband processing subsystem, radio frequency (RF) subsystem, antenna and other units, responsible for the transmission, reception and processing of wireless signals. A base station can cover different cells through multiple antennas, as shown in Figure 1B. [0003] Figure 2 shows another distributed base station, that is, the system structure of a centralized base station that uses remote radio fr...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/18H04W52/40H04B7/04
CPCH04W36/18H04W36/00692
Inventor 刘晟阮绍云
Owner UTSTARCOM TELECOM CO LTD
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