CN102665271A

CN102665271A - Method for expanding service area of PHS (personal handy-phone system) mobile phone

Info

Publication number: CN102665271A
Application number: CN2012101026368A
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: 2012-09-12
Anticipated expiration: 2032-04-10
Also published as: CN102665271B

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

The method in a kind of PHS mobile phone expansion service district

Technical field

The present invention relates to the technical field of wireless telecommunications, be specially the method in a kind 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; Because the base station that 200 mW, 500 mW are developed in the base station that initial radio-frequency emission power is 20mW, 40 mW consequently expands to the high-power base station that transmitting power reaches 1W, the base station of these different transmission power is present in the PHS network system and networking work together together jointly in the present PHS network system; Use the method that improves PHS network system base station transmitting power to enlarge the service range of system, the while has also been improved the economy of network system.

The average radio-frequency emission power of the PHS mobile phone of using in the existing PHS network system is all about 10mW; Such PHS mobile phone can receive the signal that send the base station from the high-power base station of 1W; And since the PHS mobile phone apart from the distance of 1W base station have far have near; The 1W base station just might can't accept the signal that sends from its PHS mobile phone far away, and ratio is easier to occur this phenomenon in the border district of 1W base station coverage area.

When above situation occurring, though the PHS mobile phone can receive the downstream signal of 1W base station, the upward position registration signal 1W base station that the PHS mobile phone sends does not receive, its Location Registration application failure, and communication is interrupted at this point.At this moment it is normal to demonstrate base station signal strength on PHS user's the mobile phone, is in the base station service area scope, but but can not get Communications service, brings very big doubt to the user; The cellphone subscriber is in the service area of its base station and can not get Communications service no matter be economically or no small loss is arranged on service quality for system operator.

Summary of the invention

To the problems referred to above, the invention provides the method in a kind of PHS mobile phone expansion service district, its PHS mobile phone and base station of guaranteeing the border district of the high-power base station coverage area of 1W keeps reliable communicating.

The method in a kind of PHS mobile phone expansion service district; It is characterized in that: be provided with 10 mW, two kinds of radio-frequency module transmitting powers of 20 mW in the PHS mobile phone; After the PHS mobile phone received the downstream signal of a plurality of base stations simultaneously, PHS sent location registration request through the radio-frequency emission power of 10mW to the base station, if the mobile phone upward signal is arrived by the base station reliable reception; The PHS mobile phone receives that the base station sends Location Registration and become function signal, and mobile phone will keep the radio-frequency emission power work of 10mW; If receiving the Location Registration of sending the base station at the appointed time, the PHS mobile phone do not become function signal; Then the PHS mobile phone is found out the corresponding high-power base station of 1W through the base station sequence number in a plurality of base station signals that receive; By mobile phone baseband processor control break radio-frequency module transmitting power to 20mW; And send the Location Registration signal to the high-power base station of 1W, guarantee that up link can be connected with the high-power base station of 1W.

It is further characterized in that: do not become function signal if the PHS mobile phone receives the Location Registration of sending the base station at the appointed time; And do not find the high-power base station of 1W through the base station sequence number in a plurality of base station signals that the PHS mobile phone receives; Mobile phone will keep the radio-frequency emission power of 10mW, and at this moment mobile phone can't be connected with the base station.

After adopting the inventive method; The border district of 1W base station coverage area; The PHS mobile phone arrives 20mW through mobile phone baseband processor control break radio-frequency module transmitting power, thereby the PHS mobile phone and the base station of guaranteeing the border district of the high-power base station coverage area of 1W keep reliable communicating.

Description of drawings

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 the applicable cases of various base stations (CS);

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

Embodiment

Be provided with 10 mW, two kinds of radio-frequency module transmitting powers of 20 mW in the PHS mobile phone; After the PHS mobile phone receives the downstream signal of a plurality of base stations simultaneously; PHS sends location registration request through the radio-frequency emission power of 10mW to the base station; If the mobile phone upward signal is arrived by the base station reliable reception, the PHS mobile phone receives that the base station sends Location Registration and become function signal, and mobile phone will keep the radio-frequency emission power work of 10mW; If receiving the Location Registration of sending the base station at the appointed time, the PHS mobile phone do not become function signal; Then the PHS mobile phone is found out the corresponding high-power base station of 1W through the base station sequence number in a plurality of base station signals that receive; By mobile phone baseband processor control break radio-frequency module transmitting power to 20mW; And send the Location Registration signal to the high-power base station of 1W, guarantee 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 interruption of up link has taken place under distance situation far away the airlink of 10mW PHS mobile phone and 1W base station, 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 the applicable cases of various base stations (CS); When PHS mobile phone (PS) was in the scope that 500MW base station (existing base station) and 1W base station signal can both cover, preferential selection had the base station now, and power is controlled at about 10mW among the figure; When having only the covering signal of 1W base station; Power is increased to 20mW to realize reliable communicating, and under the situation that does not have the 1W base station, the transmitting power of PHS mobile phone is to guarantee about 10mW not clash with existing system.

See Fig. 3; The airlink figure of 10mW mobile phone (PS) and base station (CS); Among the figure the existing situation of 10mW PHS mobile phone application in 500mW and 1W base station described, select the 500mW base station in the time of in 500mW base station and 1W base station signal coverage for use, select the 1W base station when in 1W base station signal coverage; At this moment the inner 10mW mobile phone of scope that covers at the 1W base station signal can only be used 500mW signal of base station coverage, and overage can not communication.

PHS: the network local telephone network is meant a kind of wireless local telephony.

Claims

1. the method in a PHS mobile phone expansion service district; It is characterized in that: be provided with 10 mW, two kinds of radio-frequency module transmitting powers of 20 mW in the PHS mobile phone; After the PHS mobile phone received the downstream signal of a plurality of base stations simultaneously, PHS sent location registration request through the radio-frequency emission power of 10mW to the base station, if the mobile phone upward signal is arrived by the base station reliable reception; The PHS mobile phone receives that the base station sends Location Registration and become function signal, and mobile phone will keep the radio-frequency emission power work of 10mW; If receiving the Location Registration of sending the base station at the appointed time, the PHS mobile phone do not become function signal; Then the PHS mobile phone is found out the corresponding high-power base station of 1W through the base station sequence number in a plurality of base station signals that receive; By mobile phone baseband processor control break radio-frequency module transmitting power to 20mW; And send the Location Registration signal to the high-power base station of 1W, guarantee that up link can be connected with the high-power base station of 1W.

2. the method in a kind of PHS mobile phone expansion service according to claim 1 district; It is characterized in that: do not become function signal if the PHS mobile phone receives the Location Registration of sending the base station at the appointed time; And do not find the high-power base station of 1W through the base station sequence number in a plurality of base station signals that the PHS mobile phone receives; Mobile phone will keep the radio-frequency emission power of 10mW, and at this moment mobile phone can't be connected with the base station.