Multi-frequency band wireless communication method

A wireless communication, multi-band technology, applied in wireless communication, radio/induction link selection arrangement, access restriction, etc. The effect of good complementarity, strong anti-interference ability and high data rate

Inactive Publication Date: 2008-03-05
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 1) The communication modes of multiple frequency bands are similar, one is just a substitute when the other is unavailable, and cannot reflect the complementary advantages of dual frequency bands
[0010] 2) The low-frequency frequency band is basically based on the GSM communication standard, that is, the dual-frequency network working at 900M and 1800M, its working frequency band bandwidth is narrow, and the supported user access data rate is low
[0011] 3) The high-frequency frequency band can achieve high data transmission rate, but the scope of application is small and the performance is unstable

Method used

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Embodiment Construction

[0026] A specific embodiment of a multi-band wireless communication method is given below:

[0027] Step 1: As shown in the embodiment in FIG. 2 , send a broadcast message. The base station uses the low-frequency control link group, such as the GSM frequency band (900M and 1.8G), to send broadcast messages in the service area, including the information of the low-frequency control link group and the high-frequency data transmission group, and information of various communication protocols and preferred signals.

[0028] Step 2: As shown in the embodiment in FIG. 2 , the low-frequency control link is established. The mobile station receives the broadcast message, scans the 900M and 1.8G frequency bands of the low-frequency control link group in turn, establishes a link with the base station on the available frequency, and sends and receives control information. During the whole communication process, the low frequency point keeps the communication link constantly.

[0029] S...

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Abstract

The invention provides a multi-band communication system comprising extremely high frequencies. The core of the invention is: communicating through multi-band, communicaltion switching between m1-mL frequency band groups and lower f1-fN frequency band groups, using LOS/NLOS identification as a standard to select frequency band, exerting advantages of two bands, avoiding defects thereof, getting well complementation.

Description

technical field [0001] The invention belongs to the field of wireless communication, and mainly relates to designing a multi-band wireless communication method. Background technique [0002] Nowadays, wireless communication systems based on multiple frequency bands have been widely used, such as the GSM communication standard, that is, a dual-frequency network working at 900M and 1800M. Its advantage lies in that it can automatically select the best and smoothest service channel among various frequency bands and switch automatically without the user noticing, thus avoiding the phenomenon of call drop. [0003] Currently, patents and documents covering multi-band communications include the following categories: [0004] 1) A patent on the basic idea of ​​a multi-band communication system. For example, "Wireless communication system supporting multi-band and multi-protocol" (Chinese Patent, Application (Patent) No.: CN98807812.0), elaborated the basic idea and implementation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04Q7/36H04W36/18H04W36/30H04W48/16
Inventor 刘宇畅符初生唐友喜邵士海
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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