WO2006069471A1

WO2006069471A1 - A method and device for implementing multi-base station binding communication in phs

Info

Publication number: WO2006069471A1
Application number: PCT/CN2004/001536
Authority: WO
Inventors: Jianfei Bao; Jianliang Xie; Hong Chen; Jianda Shen; Shanfu Lan; Wei Fang; Fangfang Qiu; Zengqi Diao; Lei Zhang; Yunyi Rui
Original assignee: Zte Corporation
Priority date: 2004-12-28
Filing date: 2004-12-28
Publication date: 2006-07-06
Also published as: CN101027918B; CN101027918A

Abstract

A method and device for implementing multi-base station binding communication are provided. Each base station is connected by RS485 bus in PHS. The RS485 bus dynamically binds each base station by using media access protocol of master-slave control mode, wherein each base station is set as master or slave base station respectively. Clock line of master station and slave station take the form of the bus, and the master base station transmits impulse signal of 5ms to each slave base station in order to obtain slot synchronization. The method and device of the present invention can bindly connect at least two basic-type base stations efficiently, and can improve binding flexibility and reliability, thereby improving channel utility of the base station more efficiently, reducing interference originating rate of CCH, reducing user connecting time, and increasing user call completing rate and handover rate.

Description

Method and device for realizing multi-base station bundle communication in PHS

The present invention relates to a method and apparatus for implementing multi-base station channel bundling in a PHS (Personal Handy Phone System, hereinafter referred to as PHS). Background technique

In the prior art, PHS base station manufacturers use "group control" technology or "channel bundling" technology to connect multiple 1C3T base stations (1 control channel, 3 traffic channels) or 1C7T base stations (1 control channel, 7 services). The channel is used for bundling. The bundled base station uses only one control channel. The saved control channel for the traffic signal has been implemented. The technology includes bundling or grouping two 1C3T (or 1C7T) base stations to 1C7T (or 1C15T) The base station uses, or bundles more than two basic base stations by base station serial connection. In the existing tandem mode, there are some problems in the flexibility of the bundle, the reliability, and the communication efficiency between the bundled base stations. For example, when any one or several base stations in the bundled base station fails, the other base stations are often caused. Exit the bundled state. Invention disclosure

It is an object of the present invention to provide a method and apparatus for implementing multi-base station bundled communication in a PHS to improve bundle flexibility, reliability, and communication efficiency between bundled base stations.

To achieve the above objective, in one aspect, the present invention provides a method for implementing multi-base station bundling communication in a PHS, including the following steps:

Step 1: connect at least two PHS base stations through a bus, and implement dynamic base station bundling combination through a media access procedure of the master-slave control mode;

In step two, the base station, which is designated as the primary base station, completes the time slot synchronization by transmitting a pulse signal to other base stations determined to be slave base stations through the clock bus.

According to the method of the present invention, the bus for communication is an RS485 bus.

The method according to the invention, wherein said primary base station transmits a 5 ms pulse signal to said slave base station over a clock bus. According to the method of the present invention, each of the bundled base stations is connected to the bus via a transceiving signal line of its external serial port.

The method according to the present invention, wherein the base station determines whether it is a primary base station or a secondary base station according to a configuration of a respective binding attribute, and if configured as a primary base station, transmits a 5 ms pulse signal; if configured as a secondary base station, only listens And clock extraction.

The method according to the invention further comprises the steps of:

a clock interrupt generation of the primary base station drives the primary base station to send data frames or empty query frames to the bus in order, and carries the flags of each bundled base station in order within the frame; b. From the base station, the bus is only passively monitored, and after being triggered to receive the data packet from the bus, the bus data packet is parsed and determined according to the flag to be sent to itself, and if so, the data packet is extracted. Processing, and occupying the bus transmission right, sending an acknowledgment frame or other data packet to the bus.

In another aspect, the present invention provides an apparatus for implementing multi-base station bundling communication in a PHS, wherein at least two PHS base stations are connected, which are connected in a bus manner for communication, and are dynamically implemented by a media access procedure of a master-slave control mode. The base station bundling combination; the base station configured as the primary base station transmits the same pulse signal to other base stations configured to be from the base station through the clock bus to complete the slot synchronization.

The device according to the invention is characterized in that said bus for communication is an RS485 bus. The apparatus according to the present invention is characterized in that said primary base station transmits a pulse signal of 5 ms to said respective slave base stations via a clock bus.

The apparatus according to the present invention is characterized in that each of the bundled base stations is connected to the bus via a transceiving signal line of its external serial port.

The device according to the invention is characterized in that said bundled base stations are connected by a multi-core aeronautical connector.

In the present invention, since each bundled base station uses the bus mode to communicate, any one or several base stations in the bundled base station may fail to cause other base stations to exit the bundled state, thereby improving the reliability of the bundle. In addition, the use of the bus mode enables communication efficiency between base stations to be increased, so that more base stations can be supported for bundling.

In the present invention, since the signal lines of the external serial ports of each bundled base station are connected to the same On the bus, in order to make the data transmission and reception of the bundled base stations on the bus without collision or confusion, the present invention adopts the medium access control mode medium access procedure in the RS485 bus mode, and each base station determines that it is the master according to the configuration of the respective bundle attributes. The base station is also a slave base station. The principle is: the clock interruption of the primary base station generates a timing to drive the primary base station to send data frames to the bus in order or the empty query towel carries the flag of each bundled base station in order; the slave base station does not actively send to the bus Data, but the bus is constantly monitored. When there is data transmission on the bus, the slave base station is interrupted to trigger the acquisition of data from the bus, the bus data packet is parsed from the base station, and the frame is determined according to the receiver's flag to determine whether the frame is sent to itself. If it is a frame sent to itself, the packet is extracted for processing, and the bus transmission right is occupied, and a response frame or other data packet is sent to the bus.

In addition, in order to ensure correct slot synchronization, the primary base station outputs a 5 ms pulse signal to all slave base stations via the clock bus, and the slave base station uses this as its own frame clock. No clock pulse signal is output from the base station.

As can be seen from the above, the primary base station actively transmits data to the communication bus, and transmits a 5 ms pulse signal to the secondary base station through the clock bus; the secondary base station only performs monitoring and clock extraction. BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic flow chart of the method of the present invention;

Figure 2 is a schematic diagram of bundling four base stations by RS485 bus;

Figure 3 is a timing diagram of base station signal transmission and reception using RS485 bus mode. The best way to implement the invention

The implementation of the technical solution of the present invention will be further described in detail below with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic flow diagram of the method of the present invention.

As shown in FIG. 1, at S100, at least two PHS base stations are connected by a bus, and a dynamic base station bundling combination is implemented by a media access procedure of a master-slave control mode; at S200, a base station that is designated as a primary base station passes a clock The bus completes slot synchronization to a pulse signal that is determined to be transmitted from other base stations of the base station.

FIG. 2 is a schematic diagram of bundling four base stations by using an RS485 bus method. As shown in Figure 2, all the bundled base stations are connected by a dedicated bundle cable. The bundled cable consists of two parts, one is the RS485 bus connection part, which is used to bundle the communication between the base stations; the other part is the clock bus part. The primary base station provides a frame synchronization clock signal to the secondary base station. The base station to which the bundled base station is respectively used as the primary base station or the base station is determined by the setting of the connector of the bundled cable.

In the preferred embodiment of FIG. 2, the bundled base stations are connected by a 10-core aeronautical connector 101, wherein the plug pins 1 and 2 are 5 ms differential clock signals, and the plug pins 3 and 4 are differential signals of the 485 bus. The plug pins 5 and 6 are used for matching the resistances at both ends of the 485 bus, and the pins 7, 8, and 9 form the connection port 102 for address recognition of the base station: 2 bits are used in this embodiment to distinguish up to four bundles. Base station.

Figure 3 shows the timing diagram of the base station signal transmission and reception using the RS485 bus mode.

As shown in FIG. 3, the base station will detect the connection port 102 of the binding port to identify its own site to determine whether it is the primary base station or the secondary base station during the startup process. The identification method is illustrated in FIG. 2. When the base station is started as the primary base station, the base station will periodically send data or query frame 201 to the 485 differential connection bus, and carry the address of itself and the receiver in the frame header. The frame structure example is shown in FIG. 3. When the base station does not transmit data, the base station will listen for data on the connected bus. When the base station is activated as a slave base station, if the base station can be put into operation as a bundled base station, the base station will listen to the data on the connection bus, intercept the data packet and analyze whether the receiver address filled in the data packet is the same as its own address, if If the same, the acknowledgment frame or other data frame is sent to the primary base station in response to the link connection request of the primary base station, otherwise the operation is not performed. The primary station will modify the recipient's address in turn, so that it can establish contact with multiple slaves in turn and send and receive data. Industrial applicability

The invention is mainly used in PHS in the field of communication. The invention adopts the RS485 bus communication mode in the communication mode of the bundled base station, and adopts the bus mode in the clock synchronization, thereby improving the flexibility and reliability of the bundling, thereby more effectively improving the channel utilization rate of the base station and reducing the interference of the CCH. Incidence rate, reducing user's connection time, improving user's connection rate and switching success rate.

Claims

Claim

A method for implementing multi-base station bundle communication in a PHS, comprising: the following steps:

In step two, the base station configured as the primary base station transmits a pulse signal to other base stations configured to receive from the base station through the clock bus to complete slot synchronization.

2. The method for implementing multi-base station bundling communication in a PHS according to claim 1, wherein in the first step, the bus for communication is an RS485 bus.

The method for implementing multi-base station bundling communication in ras according to claim 1 or 2, wherein in step 2, the primary base station transmits a 5 ms pulse signal to the slave base station via a clock bus.

The method for implementing multi-base station bundling communication in ras according to claim 1, wherein each of the bundled base stations is connected to the bus through a transceiver signal line of an external serial port.

The method for implementing multi-base station bundling communication in ras according to claim 3, wherein the base station determines whether it is a primary base station or a secondary base station according to a configuration of a respective binding attribute, and if configured as a primary base station, Then send a 5ms pulse signal; if configured as a slave base station, only listen and clock extraction.

The method for implementing multi-base station bundling communication in a PHS according to claim 3, further comprising the following steps:

The clock interrupt generation of the primary base station drives the primary base station to send data frames or empty query frames to the bus in order, and carries the flags of each bundled base station in order within the frame; the slave base station, Passing the bus only passively, and after being triggered to receive the data packet from the bus, parsing the bus data packet and determining whether it is sent to itself according to the flag, and if so, extracting the data packet for processing, and Occupy the bus transmission right, send an acknowledgment frame or other data packet to the bus.

A device for implementing multi-base station bundling communication in ras, comprising: at least two PHS base stations, which are connected by a bus to communicate, and adopt a master-slave control mode Media access procedures to implement dynamic base station bundling combinations;

The base station configured as the primary base station transmits the same pulse signal to other base stations configured to be from the base station through the clock bus to complete slot synchronization.

8. The apparatus for implementing multi-base station bundling communication in a PHS according to claim 7, wherein the bus for communication is an RS485 bus.

9. The apparatus for implementing multi-base station bundling communication in a PHS according to claim 7 or 8, wherein the primary base station transmits a 5 ms pulse signal to the slave base station via a clock bus.

10. The apparatus for implementing multi-base station bundling communication in a PHS according to claim 7, wherein each of the bundled base stations is connected to the bus through a transmission and reception signal line of an external serial port.

The apparatus for implementing multi-base station bundling communication in a PHS according to claim 7, wherein the bundled base stations are connected by a multi-core aeronautical connector.