CN102665271B

CN102665271B - Method for expanding service area of PHS (personal handy-phone system) mobile phone

Info

Publication number: CN102665271B
Application number: CN201210102636.8A
Authority: CN
Inventors: 王璠
Original assignee: Wuxi Professional College of Science and Technology
Current assignee: Wuxi Professional College of Science and Technology
Priority date: 2012-04-10
Filing date: 2012-04-10
Publication date: 2015-01-07
Anticipated expiration: 2032-04-10
Also published as: CN102665271A

Abstract

The invention provides a method for expanding a service area of a PHS (personal handy-phone system) mobile phone, in order to keep reliable communication between the PHS (personal handy-phone system) mobile phone in a marginal area of a coverage area of a 1W high power base station and the base station. The method is characterized in that a 10mW radio frequency module transmitting power and a 20mW radio frequency module transmitting power are arranged in the PHS (personal handy-phone system) mobile phone, the PHS (personal handy-phone system) mobile phone synchronously receives the downlink signals of a plurality of base stations, then the PHS (personal handy-phone system) sends a location login request to the base station by the 10mW radio frequency module transmitting power; if the uplink signal of the mobile phone is reliably received by the base station and the successful location login signal sent by the base station is received by the PHS (personal handy-phone system) mobile phone, the mobile phone keeps on working with the 10mW radio frequency transmitting power; if the successful location login signal sent by the base station is not received by the PHS (personal handy-phone system) mobile phone within an appointed period, the PHS (personal handy-phone system) mobile phone finds out a corresponding 1W high power base station from the received signals of the base stations according to the serial number of the base stations, and changes the radio frequency module transmitting power into 20mW under the control of a mobile phone baseband processor, and sends a location login signal to the 1W high power base station, so as to guarantee the connection between an uplink and the 1W high power base station.

Description

A kind of method of PHS mobile phone expansion service district

Technical field

The present invention relates to the technical field of wireless telecommunications, be specially a kind of method of PHS mobile phone expansion service district.

Background technology

Along with developing rapidly of wireless telecommunications, the continuous increase of number of users, the continuous expansion of type of service, in present PHS network system due to initial radio-frequency emission power be 20mW, 40 mW base station development to the base station of 200 mW, 500 mW, so that expand to the high-power base station that transmitting power reaches 1W, the base station of these different transmission power is cooperatively present in also networking work together in PHS network system; Expand the service range of system by the method improving PHS network system base station transmitting power, also improve the economy of network system simultaneously.

The average RF transmitting power of the PHS mobile phone in existing PHS network system is all at about 10mW, such PHS mobile phone can receive the signal that base station sends from the high-power base station of 1W, and due to the distance of PHS mobile phone distance 1W base station have far have near, 1W base station just likely can't accept the signal sent from the PHS mobile phone away from it, and this phenomenon is easier to occur at the border district of 1W base station coverage area ratio.

When there is above situation, although PHS mobile phone can receive the downstream signal of 1W base station, the upward position registration signal 1W base station that PHS mobile phone sends does not receive, and its position application for registration failure, communication is interrupted at this point.The mobile phone of PHS user at this moment demonstrates base station signal strength normal, be within the scope of base station service area, but but can not get Communications service, bring very large doubt to user; For cellphone subscriber system operator, no matter in the service area of its base station, can not get Communications service be economically or in service quality, have no small loss.

Summary of the invention

For the problems referred to above, the invention provides a kind of method of PHS mobile phone expansion service district, it guarantees that the PHS mobile phone of the border district of the high-power base station coverage area of 1W and base station keep reliable communicating.

A kind of method of PHS mobile phone expansion service district, it is characterized in that: in PHS mobile phone, be provided with 10 mW, 20 mW, two kinds of radio-frequency module transmitting powers, after PHS mobile phone receives the downstream signal of multiple base station simultaneously, PHS sends location registration request by the radio-frequency emission power of 10mW to base station, if mobile phone upward signal is arrived by base station reliable reception, PHS mobile phone receives base station and sends position and to succeed in registration signal, and mobile phone will keep the radio-frequency emission power work of 10mW; If PHS mobile phone does not receive the position of sending base station at the appointed time and to succeed in registration signal, then PHS mobile phone finds out the corresponding high-power base station of 1W by base station sequence number in the multiple base station signals received, by mobile phone baseband processor control break radio-frequency module transmitting power to 20mW, and send position registration signal to the high-power base station of 1W, ensure that up link can be connected with the high-power base station of 1W.

It is further characterized in that: to succeed in registration signal if PHS mobile phone does not receive the position of sending base station at the appointed time, and do not find the high-power base station of 1W by base station sequence number in multiple base station signals of receiving of PHS mobile phone, mobile phone will keep the radio-frequency emission power of 10mW, and at this moment mobile phone cannot be connected with base station.

After adopting the inventive method, the border district of 1W base station coverage area, PHS mobile phone passes through mobile phone baseband processor control break radio-frequency module transmitting power to 20mW, thus guarantees that the PHS mobile phone of the border district of the high-power base station coverage area of 1W and base station keep reliable communicating.

Accompanying drawing explanation

Fig. 1 is PHS mobile phone (PS) and base station (CS) airlink figure;

Fig. 2 is the power control chart of controlled power PHS mobile phone (PS) under various base station (CS) applicable cases;

Fig. 3 is the PHS mobile phone (PS) of 10mW and the airlink figure of base station (CS).

Embodiment

10 mW, 20 mW, two kinds of radio-frequency module transmitting powers are provided with in PHS mobile phone, after PHS mobile phone receives the downstream signal of multiple base station simultaneously, PHS sends location registration request by the radio-frequency emission power of 10mW to base station, if mobile phone upward signal is arrived by base station reliable reception, PHS mobile phone receives base station and sends position and to succeed in registration signal, and mobile phone will keep the radio-frequency emission power work of 10mW; If PHS mobile phone does not receive the position of sending base station at the appointed time and to succeed in registration signal, then PHS mobile phone finds out the corresponding high-power base station of 1W by base station sequence number in the multiple base station signals received, by mobile phone baseband processor control break radio-frequency module transmitting power to 20mW, and send position registration signal to the high-power base station of 1W, ensure that up link can be connected with the high-power base station of 1W.

See Fig. 1, the airlink of 10mW PHS mobile phone and 500mW base station is reciprocity, and the airlink of 10mW PHS mobile phone and 1W base station there occurs the interruption of up link when distant, and the airlink of 20mW PHS mobile phone and 1W base station is reciprocity.

See Fig. 2, the power control chart of controlled power 20mW PHS mobile phone (PS) under various base station (CS) applicable cases, in figure when PHS mobile phone (PS) is in the scope that 500MW base station (existing base station) and 1W base station signal can cover, the existing base station of prioritizing selection, and power is controlled at about 10mW, when only having the covering signal of 1W base station, power is increased to 20mW to realize reliable communicating, when not having 1W base station, the transmitting power of PHS mobile phone is that about 10mW ensures not clash with existing system.

See Fig. 3, the airlink figure of 10mW mobile phone (PS) and base station (CS), in figure, the situation that existing 10mW PHS mobile phone is applied in 500mW and 1W base station is described, 500mW base station is selected time in 500mW base station and 1W base station signal coverage, select 1W base station when only in 1W base station signal coverage, at this moment the inner 10mW mobile phone of scope covered at 1W base station signal can only use the signal cover of 500mW base station, and overage can not communication.

PHS: network local telephone network, refers to a kind of wireless local call technology.

Claims

1. the method in a PHS mobile phone expansion service district, it is characterized in that: in PHS mobile phone, be provided with 10 mW, 20 mW, two kinds of radio-frequency module transmitting powers, after PHS mobile phone receives the downstream signal of multiple base station simultaneously, PHS sends location registration request by the radio-frequency emission power of 10mW to base station, if mobile phone upward signal is arrived by base station reliable reception, PHS mobile phone receives base station and sends position and to succeed in registration signal, and mobile phone will keep 10mW transmitting power work frequently; If PHS mobile phone does not receive the position of sending base station at the appointed time and to succeed in registration signal, then PHS mobile phone finds out the corresponding high-power base station of 1W by base station sequence number in the multiple base station signals received, by mobile phone baseband processor control break radio-frequency module transmitting power to 20mW, and send position registration signal to the high-power base station of 1W, ensure that up link can be connected with the high-power base station of 1W; If PHS mobile phone does not receive the position of sending base station at the appointed time and to succeed in registration signal, and do not find the high-power base station of 1W by base station sequence number in multiple base station signals of receiving of PHS mobile phone, mobile phone will keep the radio-frequency emission power of 10mW, and at this moment mobile phone cannot be connected with base station.