Broadcasting of two generation cellular system control channel information over a three generation control channel to support roaming and handover to two generation cellular networks

A technology for controlling channel information and control channels, applied in the field of wireless communication networks, can solve the problems of lack of specific geographic locations, missing information, etc., to save power, prevent missing information, and improve surge time.

Inactive Publication Date: 2002-03-06
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Initially, 3G coverage areas are limited, and inform

Method used

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  • Broadcasting of two generation cellular system control channel information over a three generation control channel to support roaming and handover to two generation cellular networks
  • Broadcasting of two generation cellular system control channel information over a three generation control channel to support roaming and handover to two generation cellular networks
  • Broadcasting of two generation cellular system control channel information over a three generation control channel to support roaming and handover to two generation cellular networks

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Example Embodiment

[0016] Detailed description of preferred embodiments

[0017] Fig. 1 shows a block diagram of a communication network 10 according to a preferred embodiment of the present invention. The communication network 10 preferably includes a wireless telephone network, and it can be seen that the wireless telephone network includes an originating mobile station (MS) 12 connected to a serving WCDMA originating network 14 by a radio frequency (RF) communication link. The originating MS 12 preferably includes a wireless cellular type mobile station such as a personal communication service (PCS) or a cell phone, but may also include, for example, a computer, a personal digital assistant (PDA) or other wireless terminal. It can be seen that the originating WCDMA network 14 is connected to a switching network or communication link 16. The switching network may include a public switched telephone network (PSTN), but may also include other networks, and if desired, may include an optical fiber ne...

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Abstract

A method, node and wireless communication terminal for providing handover and roaming from a 3G communication system to a 2G communication system. A dual-mode wireless terminal operating in a 3G communication system may obtain control channel information regarding a 2G communication system, and switch service as a function of the control channel information received. The method includes the step of providing control channel information for the 2G communication system over a downlink control channel of the 3G communication system to the wireless terminal. The node includes a means to communicate with the wireless communication terminal and a means providing control channel information of a second generation (2G) communication network over a downlink control channel at the 3G communication network. The wireless communication terminal includes a transceiver capable of communicating with a node of both a third generation (3G) wireless communication network and a second generation (2G) wireless communication metwork, and a control means coupled to the receiver for receiving and identifying control channel information indicative of the 2G communication network from a downlink control channel at the 3G communication network.

Description

technical field [0001] The present invention relates generally to wireless communication networks, and more particularly to roaming and handover from Wideband Code Division Multiple Access (WCDMA) third generation (3G) networks to second generation (2G) networks. Background technique [0002] Wireless communication networks, including fixed wireless and cellular type mobile communication networks, continue to develop. There are several technologies available for providing wireless communications, including Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Global System for Mobile Communications (GSM), Advanced Mobile Phone System (AMPS) and Digital AMPS (D-AMPS ) (IS-136 TDMA). These networks continue to be adopted around the world. Many equipment manufacturers are producing these different systems, and typically through standards groups to ensure the commonality and interoperability of these different networks. [0003] As wireless communication...

Claims

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Application Information

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IPC IPC(8): H04M3/00H04W36/14H04W48/12H04W88/06
CPCH04W36/0083H04W88/06H04W48/12H04W36/14H04W72/04
Inventor J·L·克兰斯默
Owner TELEFON AB LM ERICSSON (PUBL)
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