METHOD AND APPARATUS FOR OPTIMIZED ASSIGNMENT OF ABIS TRANSMISSION RESOURCES BASED ON DYNAMIC STATISTICAL TIME DIVISION MULTIPLEXING

Abstract

The present invention relates to technique for optimized assignment of Abis transmission resources based on dynamic statistical time division multiplexing, the method comprising the steps of: assigning a set of 64 k TS's to GPRS/EGPRS services on an Abis link, the set of 64 k TS's shared among all BTS's connected to the Abis interface; a PCU assigning sufficient Abis transmission resources to a TRX based on the load thereof if the TRX has EGPRS services; a BSC interconnecting Abis transmission resources and BSC-PCU transmission resources and informing a BTS that said Abis transmission resources have been assigned to a TRE mapped to the TRX; the PCU reassigning bandwidth of the Abis transmission resources based on changes in the load of the TRX; in each TRX, all RTS's statistical-time-division-multiplexing all transmission resources of the TRX based on flow in different periods for different RTS's. The present invention will achieve dynamic sharing of Abis transmission resources on a RTS layer so as to optimize using of Abis transmission resources, reduce waste and decrease operating cost.

Description

DESCRIPTION OF FIGURE

FIG. 1 is a schematic diagram showing optimized assignment of Abis transmission resources in accordance with the present invention;

FIG. 2 is a schematic diagram showing segments of data blocks in accordance with the present invention;

FIG. 3 is a schematic diagram showing structure of a packet control unit in accordance with the present invention;

FIG. 4 is a schematic diagram showing structure of a base transceiver station in accordance with the present invention;

FIG. 5 is a schematic diagram showing structure of a base station controller in accordance with the present invention;

FIG. 6( a)-(b) are schematic diagrams showing two systems of alternative schemes relating to PCU in the 3rd Generation Partnership Project (3GPP).

Claims

1. A method for optimized assignment of Abis transmission resources based on dynamic statistical time division multiplexing, comprising the steps of: assigning a set of 64 k TS's to GPRS/EGPRS services on an Abis link, the set of 64 k TS's shared among all BTS's connected to the Abis interface;a PCU assigning sufficient Abis transmission resources to a TRX based on the load thereof if the TRX has EGPRS services;a BSC interconnecting Abis transmission resources and BSC-PCU transmission resources and informing a BTS that said Abis transmission resources have been assigned to a TRE mapped to the TRX;the PCU reassigning bandwidth of the Abis transmission resources based on changes in the load of the TRX;in each TRX, all RTS's statistical-time-division-multiplexing all transmission resources of the TRX based on flow in different periods for different RTS's.

2. The above method for optimized assignment of Abis transmission resources as claimed in claim 1, wherein the rule for the PCU reassigning bandwidth of the Abis transmission resources is that: if the load of a TRX decreases, the PCU releases redundant Abis transmission resources from the TRX and reassigns them to another TRX which needs additional Abis transmission resources;if the load of a TRX increases, the PCU adds difference Abis transmission resources to the TRX, which are obtained from transmission resources released from idle or other TRX's;if a TRX has no E-GPRS services, the PCU recalls the Abis transmission resources used for the TRX, which are multiplexed by other TRX's.

3. The above method for optimized assignment of Abis transmission resources as claimed in claim 1, wherein data blocks on respective RTS's are uninterruptedly and subsequently arranged among a set of sub-channels so that a plurality RTS's can multiplex one or more sub-channels.

4. A packet control unit comprising an entity of packet control unit, characterized in further comprising a transmission resource assigning unit connected to the entity and a TRX load decision and adjusting unit connected thereto, the transmission resource assigning unit for assigning Abis transmission resources to a TRX having GPRS/EGPRS services and performing optimized assignment of bandwidth of transmission resources based on current using status of the Abis transmission resources and a predicted flow required on the TRX;the TRX load decision and adjusting unit for determining and predicting flow load of the TRX in real time and adjusting assignment of bandwidth of transmission resources on the TRX based on changes in load on the TRX.

5. The packet control unit as claimed in claim 4, further comprising a RTS multiplexing transmission resource unit for uninterruptedly and subsequently arranging data blocks on respective RTS's among a set of sub-channels so that a plurality RTS's can multiplex all sub-channels assigned to the TRX.

6. A method for controlling optimized assignment of Abis transmission resources in a packet control unit, comprising: pre-assigning step for assigning Abis transmission resources with optimal bandwidth to a TRX having GPRS/EGPRS based on general using status of transmission resources;TRX load decision and adjusting step for determining and predicting flow load of the TRX in real time and adjusting assignment of bandwidth of transmission resources on the TRX based on changes in load on the TRX;re-assigning step for performing optimized assignment of transmission resources based on the adjusted bandwidth of Abis transmission resources on the TRX.

7. The method for controlling optimized assignment of Abis transmission resources as claimed in claim 6, further comprising a RTS multiplexing transmission resource step for uninterruptedly and subsequently arranging data blocks on respective RTS's among a set of sub-channels so that a plurality RTS's can multiplex all sub-channels assigned to the TRX.

8. A base transceiver station, comprising: an entity of base transceiver station, characterized in further comprising a monitoring module for monitoring position of one or more sub-channels of actual transmission resources and bandwidth of transmission resources assigned to a TRX.

9. The base transceiver station as claimed in claim 8, further comprising a segment multiplexing module, communicated with a RTS multiplexing transmission resource unit in a packet control unit, for arranging data blocks obtained from a wireless channel among a set of sub-channels.

10. A base station controller, comprising an entity of base station controller, characterized in further comprising a connection means, The connection means is for interconnecting Abis transmission resources and BSC-PCU transmission resources based on Abis transmission resources assigned by a packet control unit, and forwarding correspondence between the Abis transmission resources and a TRX from the packet control unit to a monitoring module of a BTS to inform the BTS that the Abis transmission resources have been assigned to a TRE mapped to the TRX.