CN1133342C

CN1133342C - Base station controller with multi-module structure

Info

Publication number: CN1133342C
Application number: CN 00116988
Authority: CN
Inventors: 文峰; 赖峥嵘
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2000-06-29
Filing date: 2000-06-29
Publication date: 2003-12-31
Anticipated expiration: 2020-06-29
Also published as: CN1321048A

Abstract

The present invention relates to a base station controller with a multi-module structure, which comprises a system controlling and switching module SCSM, a plurality of radio resource management modules RMM1 to RMMn, a plurality of base station interface modules BIE1 to BIEx, a high-capacity code conversion module TC and a relay interface module A oriented to a mobile switching center MSC, wherein the radio resource management modules RMM1 to RMMn and the high-capacity code conversion module TC are directly connected with the system controlling and switching module SCSM, each radio resource management module is connected with the base station interface modules BIE1 to BIEn, and the relay interface module A is connected with the high-capacity code conversion module TC or directly connected with the system controlling and switching module SCSM. The present invention has the advantages of low cost and high system reliability and is convenient for the expansion.

Description

A kind of base station controller of multi-module structure

The present invention relates to mobile communication system, specifically, is the base station controller of a kind of multi-module structure in the mobile communication system.

In the public land mobile system, base station controller is responsible for the management function of base station and wireless channel between mobile switch and base transceiver station.Base station controller generally comprises base-station interface module BIE, code conversion module TC, control and administration module CMM and Switching Module or the like.For mobile communication carrier, the size of base station controller capacity affects its network operation efficient and maintenance cost to a certain extent.This mainly shows the following aspects: if the capacity of 1 one base station controller BSC is big, then the network planning and maintenance management seem just that easily (all sub-districts in a basic place are all by a BSC management, in addition, if the base station controller BSC number is few, then OMC-R is also few); 2, the base station controller BSC capacity is big, and handover is just few, and this makes the load of moving exchanging center MSC minimize.3, when extension of network, the sub-district that big capacity base station controller need distribute reduces greatly, makes the network operation faster, and efficient is higher; 4, big capacity base station controller can reduce A interface signaling number of links, reduces investment.5, the cost of base station controller BSC can reduce along with the increase of capacity, and the O﹠M cost of operator also can reduce.In order to adapt to this big capacity of base station controller, open-ended demand, generally in the design of base station controller, all adopt the design of multi-module structure, traditional multimode base station controller is by the stored-program control exchange extension of multi-module structure and next.Fig. 1 is the structure chart of typical multimode stored-program control exchange.As shown in Figure 1, the multimode stored-program control exchange comprises Central Switching Module CSM, peripheral switching module PSM ₁～PSM _n, the various device interface module then is connected on the peripheral switching module, presents relation a kind of classification, tree-shaped between the three, is characterized in that each peripheral switching module establishes one's own system, independently one-tenth office.This structure can be accomplished big capacity, and is extendible.

The base station controller of traditional multi-module structure is extended by the multimode stored-program control exchange.As shown in Figure 2, the base station controller of traditional multi-module structure comprises Central Switching Module CSM ', peripheral switching module PSM ' ₁～PSM ' _n, base-station interface module BIE ₁～BIE _m, code conversion module TC ₁～TC _nWith TIM trunk interface module A towards moving exchanging center MSC ₁～A _nAs shown in Figure 2, similar with the multimode stored-program control exchange, peripheral switching module PSM ' ₁～PSM ' _nBe connected on the Central Switching Module CSM ', base-station interface module, code conversion module and TIM trunk interface module all are connected on each peripheral switching module, Central Switching Module and peripheral switching module have switching network and the module processor suitable with its capacity separately, make each peripheral switching module all have all functions of base station controller like this, establish one's own system, independently one-tenth office.Though traditional multimode base station controller also has big capacity, open-ended characteristics, also there is following problem in it: 1, cost is than higher.According to this configuration, each peripheral switching module all must have net crosspoint, Base Station Interface Equipment BIE unit, code conversion and relay interface unit, control unit, clock unit etc., and Central Switching Module provides Traffic Channel between each peripheral module and the signaling transfer point between the signaling channel, therefore must have very big traffic handing capacity; 2, owing to the assignment of A interface circuit is finished by moving exchanging center MSC, the time slot of the time slot of the A interface of MSC institute assignment and its Abis interface that continues is not necessarily in same peripheral switching module when continuing, therefore to transfer by Central Switching Module, speech channel switching number of times is too much, wherein any one link is out of joint all causes speech channel to connect, and has reduced the reliability of system like this; 3, under the structure of this BSC, message communicating is all arranged between each peripheral switching module, the traffic is bigger, and the database of each peripheral switching module all needs to upgrade when carrying out dilatation, is inconvenient to carry out the dilatation of system like this.

The objective of the invention is to propose a kind of system reliability that reduces cost, improves, and can carry out the base station controller of the novel multi-module structure of System Expansion easily.

A kind of base station controller of multi-module structure comprises the control Switching Module SCSM of system that is responsible for ground installation management and the unified A of processing interface signaling, and several are responsible for the be correlated with RRM of base station and the RRM module RMM of LAPD Channel Processing ₁～RMM _n, several base-station interface modules BIE ₁～BIE _x, big capacity code conversion module TC and TIM trunk interface module A towards moving exchanging center MSC is characterized in that: described several RRM modules RMM ₁～RMM _nDirectly link to each other with big capacity code conversion module TC with the control Switching Module SCSM of system; Each RRM module and several base-station interface modules BIE ₁～BIE _nLink to each other; TIM trunk interface module A towards moving exchanging center MSC links to each other with big capacity code conversion module TC or directly links to each other with the control Switching Module SCSM of system.

The present invention is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the structure chart of typical multimode stored-program control exchange;

Fig. 2 is traditional multimode base station controller structure chart;

Fig. 3 is the novel multimode base station controller structure chart that the present invention proposes;

Fig. 1 and Fig. 2 had done explanation in front, described Fig. 3 below in detail, core just of the present invention.As shown in Figure 3, novel multimode base station controller comprises a control Switching Module SCSM of system, several RRM modules RMM ₁～RMM _n, big capacity code conversion module TC, several base-station interface modules BIE ₁～BIE _x, also comprise a TIM trunk interface module A towards moving exchanging center MSC.The base-station interface module BIE of some ₁～BIE _nBe connected on some RRM modules all RRM module RMM ₁～RMM _nAll directly link to each other with big capacity code conversion module TC with the control Switching Module SCSM of system; In the solution of the present invention, can directly be connected on the control Switching Module SCSM of system towards the TIM trunk interface module A of moving exchanging center MSC, also can be serially connected on the big capacity code conversion module TC.

Each base-station interface module BIE among Fig. 3 ₁～BIE _xConnect a base transceiver station BTS, towards the TIM trunk interface module A connection moving exchanging center MSC of moving exchanging center MSC.Compare with traditional multimode base station controller shown in Figure 2, on module, whole base station controller BSC is divided into two kinds of modules: system control module and RRM module.System control module is responsible for the management of ground installation and is handled with the unified of A interface signaling of MSC interface; The RRM module is responsible for the RRM of relevant base station, with the processing of the LAPD channel of base station communication.In fact, the RRM module RMM among Fig. 3 _xBe the part of peripheral switching module PSM ' among Fig. 2, just removed net crosspoint part and control section among the former peripheral switching module PSM ', thereby RRM module RMM ₁～RMM _nDo not possess function of exchange and controlled function, so yet independent one-tenth office.And the control Switching Module SCSM of the system among Fig. 3 integrates Central Switching Module CSM among Fig. 2 and the controlled function among the peripheral switching module PSM ', has the big capacity switching network of a core and the function of system's control.

Correspondingly, because code conversion module TC unification is connected on the control Switching Module SCSM of system, so its capacity is each peripheral switching module PSM ' among Fig. 2 ₁～PSM ' _nEach the code conversion module TC that is connect ₁～TC _nThe capacity sum, be a big capacity code conversion module.Be connected on the control Switching Module SCSM of system because TC is unified,, can only in the control Switching Module SCSM of system, have one as the core switching network of finishing channel switch task among the BSC, and at RRM mould RMM ₁～RMM _nIn, only need exist semifixed commutative relation just passable.Can simplify the commutative relation of the Traffic Channel of whole system like this, be convenient to management.

Therefore, although in the novel multimode base station controller that the present invention proposes, each RRM module is one-tenth office separately, must just can finish the function of whole base station controller with system's control Switching Module SCSM collaborative work, as if this can not embody any superiority when very little single innings of base station controller system capacity, but being used for the open-ended base station controller of big capacity is but to have outstanding superiority: at first, because whole base station controller only exists the switching network of a core therefore only need carry out dynamic management to a switching network in big capacity base station controller at the control Switching Module SCSM of system, the more important thing is that the whole system hardware and software cost all is reduced; Secondly, because the unified information of handling from moving exchanging center MSC of the control Switching Module SCSM of system so the module processor in each RRM module is simplified, has improved the reliability of system again thus; At last, radio resource management function is shared by each RRM module, has any contact hardly between each RRM module, so dilatation easily.

Claims

1, a kind of base station controller of multi-module structure, comprise that the system that the A interface signaling is handled in a responsible ground installation management and unification controls Switching Module (SCSM), several are responsible for the RRM of relevant base station and the RRM module (RMM of LAPD Channel Processing ₁～RMM _n), several base-station interface modules (BIE ₁～BIE _x), a big capacity code conversion module (TC) and a TIM trunk interface module towards mobile switching centre (MSC) (A) is characterized in that:

Described several RRM modules (RMM ₁～RMM _n) directly link to each other with system's control Switching Module (SCSM) respectively with big capacity code conversion module (TC); Each RRM module and several base-station interface modules (BIE ₁～BIE _n) link to each other; TIM trunk interface module (A) towards mobile switching centre (MSC) links to each other or directly links to each other with system's control Switching Module (SCSM) with big capacity code conversion module (TC).

2, the base station controller of a kind of multi-module structure as claimed in claim 1 is characterized in that: described system's control Switching Module (SCSM) has a jumbo core switching network.

3, the base station controller of a kind of multi-module structure as claimed in claim 1 is characterized in that: the capacity of described code conversion module (TC) be each peripheral switching module in the traditional multi-module structure base station controller (PSM ' ₁～PSM ' _n) each code conversion module (TC of being connect ₁～TC _n) the capacity sum.