CN100459765C - Single-mode double-card double-standby method for time-division synchronous code division multiple access system terminal - Google Patents

Abstract

A single-mode double-card double-standby method of TD-SCDMA system terminal includes setting fetch value of PBP to be 4-64 fames, receiving less than or equal to two times of PICH in one discontinuous receiving period, using IMSI number in USIM card to confirm position of PICH received by user corresponding to each USIM card in each PICH, carrying out different treatment as per different condition according to different IMSI number.

Description

Single-mode dual-card dual-standby method for time-division synchronous code division multiple access system terminal

technical field

The invention belongs to the technical field of communication, and in particular relates to a single-mode dual-card dual-standby method for a system terminal in a Time Division Synchronous Code-Division Multiple Access (TD-SCDMA) mobile communication system.

Background technique

In 1946, Bell Laboratories in the United States proposed to divide the service area of mobile phones into several cells, and set up a base station in each cell to form a new concept of cellular (Cellular) mobile communication in a cellular system. In 1978, this system was successfully tested in Chicago, USA, and it was officially put into commercial use in 1983. The adoption of the cellular system enables the same frequency to be used repeatedly, thereby greatly increasing the capacity of the mobile communication system and meeting the objective needs of the sudden increase of mobile communication users. The development of cellular mobile communication system has experienced a process from analog network to digital network, from frequency division multiple access (FDMA) to time division multiple access (TDMA) and code division multiple access (CDMA).

With the development of the times, people's requirements for communication, including requirements for communication quality and service types, are getting higher and higher. The third generation (3G) mobile communication system has been developed to meet this requirement. It takes global general use and system integration as the basic starting point, and tries to establish a global mobile integrated service digital network, integrating various mobile communication systems such as cellular, cordless, paging, trunking, mobile data, mobile satellite, air and sea. It provides a variety of voice and non-voice services that are compatible with the services of the fixed telecommunication network and of comparable quality, and performs global roaming of pocket personal terminals, so as to realize the ideal of communicating with anyone at any place and any time that humans dream of.

The most critical in the third generation mobile communication system is Radio Transmission Technology (RTT). RTT candidate proposals collected by the International Telecommunication Union in 1998: In addition to 6 satellite interface technology solutions, there are 10 ground wireless interface technology solutions, which are divided into two categories: CDMA and TDMA, of which CDMA is dominant. In CDMA technology, the International Telecommunication Union currently accepts three standards, namely W-CDMA in Europe and Japan, CDMA 2000 in the United States and TD-SCDMA in China.

Compared with other third-generation mobile communication standards, TD-SCDMA adopts many unique advanced technologies, and has outstanding advantages in both technology and economy. TD-SCDMA adopts time division duplex (Time Division Duplex, TDD), smart antenna (Smart Antenna), joint detection (Joint Detection) and other technologies. It has potential advantages in asymmetric mobile data such as Internet browsing and multimedia services such as video on demand.

The functions of mobile phones are changing with each passing day, and the functions of mobile phone cards are also emerging in an endless stream, and people's needs for mobile phones are becoming more and more diverse. Some people often carry multiple mobile phones with them for the sake of privacy, reducing roaming charges, and obtaining network services at any time. The single-mode dual-card dual-standby mobile phone allows consumers to have two mobile phone numbers at the same time, and communicate freely anytime, anywhere. In this era of respecting freedom, respecting individuality and respecting privacy, the birth of single-mode dual-card dual-standby mobile phones is especially suitable for business travelers who often travel to different places, and white-collar workers who hope that their work and life will not interfere with each other. It can not only help consumers do whatever they want Selecting the call partner can also save long-distance roaming charges and improve call efficiency. The so-called single-mode dual-card dual-standby mobile phone means that two mobile phone cards can be placed on one mobile phone at the same time. The user can simultaneously receive the paging signal sent by the network to the numbers corresponding to the two USIM cards.

Contents of the invention

The purpose of the present invention is to propose a single-mode, dual-card, and dual-standby implementation scheme for a TDSCDMA system terminal, so as to realize that a single TDSCDMA system terminal simultaneously receives paging signals sent by two network sides, that is, Dual standby function.

In the existing standard, the reception of the paging indicator is to page the mobile terminal by sending the paging indicator on the paging indicator channel (PICH, Paging Indicator Channel) in the time division synchronous code division multiple access system, and the mobile terminal uses the following formula To calculate the paging time:

Paging time = paging time offset + (n × discontinuous reception cycle) + offset

The parameter n is a non-negative integer and satisfies:

Paging time ≤ maximum system frame number

In the formula, the paging time offset is calculated according to the following formula:

Paging time offset = mod (IMSI ₁ /K, discontinuous reception period / PBP) * PBP

In the formula, PBP is the paging block period; IMSI (International Mobile Subscriber Identity) is the International Mobile Subscriber Identity number, K is the value in the system broadcast message, and its composition is shown in Figure 1.

IMSI consists of 3 parts:

1. Mobile Country Code (MCC): The mobile country code uniquely identifies the home country of the mobile user;

2. Mobile Network Code (MNC): The mobile network code indicates the public land mobile network to which the mobile user belongs;

3. Mobile Subscriber Identification (MSIN): The mobile subscriber identification number is used to identify mobile subscribers in the public land mobile network;

In the paging time, the terminal determines the paging indication in the paging time through the IMSI number:

  Paging indication = (IMSI div 8192) mod Np

In the formula, Np is the number of paging indications in each paging block, which is indicated by the network side through a system broadcast message, and can be 22, 44 or 88.

For the TD-SCDMA system in the method of the present invention, the value of PBP is 4 to 64 frames, and within a discontinuous reception cycle, the PICH is received less than or equal to 2 times; in each PICH, the user corresponding to each USIM card receives The location of the PICH is determined by the IMSI number in the USIM card. According to different IMSI numbers, it is handled separately according to different situations:

1. The paging indicators corresponding to the two USIM cards are the same paging position of a PICH, namely

(IMSI ₁ div8192) mod Np = (IMSI ₂ div8192) mod Np

In the formula, IMSI ₁ and IMSI ₂ respectively correspond to the IMSI numbers in the two USIM cards. At this time, the physical layer of the terminal only needs to receive a PICH channel signal, and then receive the paging information according to the value of the paging indication position and report it to the wireless resource The control layer and the radio resource control layer judge whether there is a paging signal sent to the corresponding number corresponding to the USIM by the core network identification number (CN identity). The core network identification number includes ①IMSI (International Mobile Subscriber Identity), ②TMSI (Temporary Mobile Subscriber Identity) and ③P-TMSI (PacketTemporary Mobile Subscriber Identity);

2. The paging indications corresponding to the two USIM cards are in different paging positions of the same PICH, that is, (IMSI ₁ /K) mod (discontinuous reception period/PBP) = (IMSI ₂ /K) mod (discontinuous reception Period/PBP) At this time, the physical layer of the terminal only needs to receive a signal of a PICH channel, and then receive the paging information according to the value of different paging indication positions and report it to the radio resource control layer;

3. The paging indications corresponding to the two USIM cards are in different PICHs. At this time, the physical layer of the terminal needs to receive the signals of the two PICH channels, and then receive the paging information at different positions according to the values of different paging indication positions and report them to the The radio resource control layer, the radio resource control layer judges whether there is a paging signal on the network side to send to the corresponding number corresponding to the USIM through the core network identification number, and the core network identification number includes IMSI, TMSI and P-TMSI.

The method of the present invention corresponds to two IMSI numbers for the same terminal and resides in the same cell. Paging block period (PBP) and frame offset are calculated through the cell system broadcast message, which has nothing to do with the user's IMSI number, thus realizing single-mode dual-card dual-standby.

Description of drawings

Fig. 1 Composition diagram of International Mobile Identification Number;

Figure 2 The process of booting up and staying in a cell and receiving a paging instruction;

Fig. 3 is a flow of paging instruction processing for the radio resource control layer.

Detailed ways

A specific embodiment of the present invention will be described below in conjunction with FIG. 2 and FIG. 3 , so as to further understand the content of the present invention.

As shown in Figure 2, the single-mode dual-card dual-standby scheme of the TDSCDMA system terminal of the present invention comprises the following steps:

Step 1, when the terminal is turned on, it first needs to perform a cell search process to obtain the frequency and synchronization information of the cell;

Step 2, receiving system broadcast messages to obtain basic information about the cell;

Step 3, using the TMSI, P-TMSI or IMSI number information corresponding to USIM1 as a parameter to initiate a connection request to the network;

Step 4, using the TMSI, P-TMSI or IMSI number information corresponding to USIM1 as a parameter to initiate a location update process to the network;

Step 5, using the TMSI, P-TMSI or IMSI number information corresponding to USIM2 as a parameter to initiate a connection request to the network;

Step 6, using the TMSI, P-TMSI or IMSI number information corresponding to USIM2 as a parameter to initiate a location update process to the network;

Step 7, using IMSI1 and IMSI2 corresponding to USIM1 and USIM2 to calculate the paging indication position;

Step 8, receiving paging indications corresponding to USIM1 and USIM2;

Step 9, when the paging message sent by the network side is received, the message is sent to the upper layer, and the upper layer judges whether there is a paging message corresponding to USIM1 and USIM2, and the specific judgment process is shown in Figure 3;

Step 10, after the high layer parses the paging message and finds that there is a paging message corresponding to USIM1 or USIM2, the terminal first stops receiving the paging indication corresponding to USIM1 and USIM2;

Step 11, using the TMSI, P-TMSI or IMSI number information corresponding to the paged USIM as a parameter to initiate a connection request to the network;

Step 12, sending a paging response to the network;

Step 13, establishing an uplink and downlink service bearer with the network;

Step 14, after receiving the connection release command sent by the network side, send a connection release completion command to the network side;

Step 15, releasing the physical channel to re-reside in the cell;

Step 16, receiving paging instructions corresponding to USIM1 and USIM2.

After receiving the paging message sent by the network side, the radio resource control layer judges whether there are paging messages corresponding to USIM1 and USIM2 according to the steps shown in Figure 3;

Step 1, the physical layer sends the paging message to the radio link control layer;

Step 2, the radio link control layer first judges whether the paging information adopts the core network identification number, if not, go to step 15;

Step 3, judging whether the paging information uses IMSI to identify the user, if not, go to step 7;

Step 4, respectively read the IMSI numbers corresponding to the two USIMs;

Step 5, judging whether the IMSI number in the paging message is the same as one of the IMSI numbers corresponding to the two USIMs, if not, go to step 15;

Step 6, send a paging message to the upper layer, and turn to step 15;

Step 7, judge whether the paging information adopts TMSI to identify the user, if not, turn to step 11;

Step 8, respectively read the TMSI numbers corresponding to the two USIMs;

Step 9, judging whether the TMSI number in the paging message is the same as one of the TMSI numbers corresponding to the two USIMs, if not, go to step 15;

Step 10, send a paging message to the upper layer, and go to step 15;

Step 11, judging whether the paging information adopts P-TMSI to identify the user, otherwise turn to step 15;

Step 12, respectively read the P-TMSI numbers corresponding to the two USIMs;

Step 13, judging whether the P-TMSI number in the paging message is the same as one of the P-TMSI numbers corresponding to the two USIMs, if not, go to step 15;

Step 14, sending a paging message to the upper layer;

Step 15, end.

Claims (1)

1, the single-mode double-card double-standby method of time-division synchronous code division multiple access system terminal, it is characterized in that this method is for the TD-SCDMA system, the value of PBP is 4～64 frames, in a discontinuous receiving cycle, reception is less than or equal to PICH 2 times, and wherein PBP is that paging block periodicity, PICH are Page Indication Channel; In each PICH, the position of the PICH that the user of each usim card correspondence receives is determined by the IMSI in the usim card number, according to different IMSI number, is handled respectively according to different situations:

The paging indication of (1) two usim card correspondence is the same paging position of a PICH, promptly

(IMSI ₁div8192)mod?Np＝(IMSI ₂div8192)mod?Np

IMSI in the formula ₁And IMSI ₂In 2 usim cards of correspondence IMSI number respectively; Np is the number of paging indication in each paging block, and this number is indicated by system broadcast message by network side, and value is 22,44 or 88; This moment, terminal physical layer only need receive the signal of a PICH channel, come paging receiving information and report radio resource control layer according to the value of paging indicating positions then, radio resource control layer judges by the core net identifier whether network side has paging signal to send to the number of corresponding USIM correspondence, and the core net identifier comprises IMSI, TMSI and P-TMSI;

The paging of (2) two usim card correspondences is indicated in the different pagings position of same PICH, i.e. (IMSI ₁/ K) mod (discontinuous receiving cycle/PBP)=(IMSI ₂/ K) mod (terminal physical layer this moment of discontinuous receiving cycle/PBP) only need receive the signal of a PICH channel, comes paging receiving information and reports radio resource control layer according to the value of different paging indicating positions then;

The paging indication of (3) two usim card correspondences is in different PICH, this moment, terminal physical layer need receive the signal of two PICH channels, value according to different paging indicating positions receives the paging information of diverse location and reports radio resource control layer then, radio resource control layer judges by the core net identifier whether network side has paging signal to send to the number of corresponding USIM correspondence, and the core net identifier comprises IMSI, TMSI and P-TMSI;

The single-mode double-card double-standby method of this time-division synchronous code division multiple access system terminal comprises the steps:

Step a behind starting up of terminal, at first will carry out cell search process, to obtain the frequency and the synchronizing information of sub-district;

Step b, the receiving system broadcast is to obtain the essential information about this sub-district;

Step c, the TMSI of employing USIM1 correspondence, P-TMSI or IMSI information are that parameter is initiated connection request to network;

Steps d, the TMSI of employing USIM1 correspondence, P-TMSI or IMSI information are that parameter is initiated position updating process to network;

Step e, the TMSI of employing USIM2 correspondence, P-TMSI or IMSI information are that parameter is initiated connection request to network;

Step f, the TMSI of employing USIM2 correspondence, P-TMSI or IMSI information are that parameter is initiated position updating process to network;

Step g adopts USIM1 and the corresponding IMSI1 of USIM2 and IMSI2 to calculate the paging indicating positions;

Step h receives the paging indication corresponding to USIM1 and USIM2;

Step I when receiving the beep-page message that network side sends, sends to high level with this message, judges whether beep-page message corresponding to USIM1 and USIM2 by high level;

Step j after high level has been resolved beep-page message, finds to have the beep-page message corresponding to USIM1 or USIM2, and then terminal at first stops to receive the paging indication corresponding to USIM1 and USIM2;

Step k adopts the TMSI of paged USIM correspondence, and P-TMSI or IMSI information are that parameter is initiated connection request to network;

Step l sends page response to network;

Step m and network are set up the up-downgoing service bearer;

Step n receives after the connection release command that network side sends to send to connect to discharge to network side and finishes order;

Step o, release physical channels is persistent district again;

Step p receives the paging indication corresponding to USIM1 and USIM2;

After receiving the beep-page message of network side transmission, radio resource control layer judges whether the beep-page message corresponding to USIM1 and USIM2 as follows:

Steps A, physical layer sends to wireless chain control layer with beep-page message;

Step B, wireless chain control layer judge at first whether paging information adopts the core net identifier, as not changeing step O;

Step C judges whether paging information adopts IMSI to discern the user, as otherwise change step G;

Step D reads the IMSI number of two USIM correspondences respectively;

Step e, judge in the beep-page message IMSI number whether identical with one of IMSI number of two USIM correspondences, then change step O as difference;

Step F sends beep-page message to high level, and changes step O;

Step G judges whether paging information adopts TMSI to discern the user, as otherwise change step K;

Step H reads the TMSI of two USIM correspondences respectively;

Step I, judge in the beep-page message TMSI number whether identical with one of TMSI of two USIM correspondences, then change step O as difference;

Step J sends beep-page message to high level, and changes step O;

Step K judges whether paging information adopts P-TMSI to discern the user, as otherwise change step O;

Step L reads the P-TMSI number of two USIM correspondences respectively;

Step M, judge in the beep-page message P-TMSI number whether identical with one of P-TMSI number of two USIM correspondences, then change step O as difference;

Step N sends beep-page message to high level;

Step O finishes.

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