CN1206268A - Method for controlling direct call between mobile subscriber terminals in mobile communication system - Google Patents
Method for controlling direct call between mobile subscriber terminals in mobile communication system Download PDFInfo
- Publication number
- CN1206268A CN1206268A CN98115523A CN98115523A CN1206268A CN 1206268 A CN1206268 A CN 1206268A CN 98115523 A CN98115523 A CN 98115523A CN 98115523 A CN98115523 A CN 98115523A CN 1206268 A CN1206268 A CN 1206268A
- Authority
- CN
- China
- Prior art keywords
- paging
- grouping
- mst
- mobile subscriber
- subscriber terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
A method for controlling a direct call between mobile subscriber terminals in a mobile communication system includes the steps of: successively transmitting paging packets, for searching for a terminating mobile subscriber terminal twice in response to a call execution command; and detecting synchronization by a firstly received paging packet to generate a hopping frequency, initialize a receiver and to wait for a paging packet of a hopping frequency, and transmitting a paging acknowledge packet to an originating mobile subscriber terminal in synchronization with a secondly received paging packet.
Description
Between the method for direct calling
The present invention relates to be used to control the method for the direct calling between the mobile subscriber terminal of mobile communication system, relate more specifically to a kind of control method that during mobile subscriber's direct calling, prevents step-out.
Usually, mobile communication system network comprises a Wireless Access Unit (" RAU ") and a mobile subscriber terminal (" MST ").In order to communicate by letter between the MST or between MST and the catv terminal, mobile communication system is forming a communication path by RAU between the MST or between MST and the catv terminal.Such mobile communication system network is represented in Fig. 1.
With reference to figure 1, (wherein i is a natural number 1,2 from MTSi to be used for mobile subscriber's switch RAU response, 3, N) Flow Control is carried out in call request, with search a purpose user and realize MSTi and the purpose user between signaling, between them, to form a communication path.RAU connection mobile subscriber is to the wire/wireless switching system and 8 channels are arranged.Each MTS starts one to go out to call out or receive one to go into to call out by RAU in the coverage of RAU.
Provided call business by the mobile communication system net as shown in Figure 1, MSTi should be registered as a mobile subscriber in RAU.If receive a calling of going into that is used to search for any MST from the outside, RAU just only is connected to calling corresponding M ST when corresponding M ST is registered.Therefore, RAU should have a MST registered database with a plurality of MST in the register call service area.Because MST is the mobile subscriber, they are registered to RAU by wireless channel in moving.
If the MSTi that in RAUi, registers move to a RAUj (wherein j is a natural number 1,2,3 ... N, in call service district i=j), MSTi just senses this fact and carries out log-on operation.Just, the user MSTi that registers in RAUi enters the new call service district of RAUj, and it just always receives the control grouping that is sent out from RAUj.Then, MSTi analyzes the information that receives the control grouping and determines whether and oneself is registered among the RAUj it and the control packet synchronization that receives.Move to the call service district of RAUj from the call service district of RAUi if judge MSTi, MSTi carries out log-on operation.
Just, MSTi sends the registration packet data that comprise its telephone number to RAUj.RAUj analyzes the content and the broadcast search message of registration packet data, and the RAUi so that search MSTi registers in network is repeated registration to prevent MSTi.Therefore, MSTi registers in RAUj and can go into or go out to call out through RAUj.Because RAUj and the MSTi frequency hopping not by frequency division multiple access but by code division multiple access transmits and receive data, so the communication table between them reveals good confidentiality and quality.
In frequency-hopping system, the frequency hopping of RAU and MSTi should be known each other.And, for secret frequency hopping should be periodically updated.
As shown in Figure 1 for the communication between RAU and the MST, control information (control grouping), signaling information and business information should be sent out and receive.The control grouping is the information of the state of indication RAUj.Expression control grouping in following table 1.Signaling information is the pre-stage of the calling between RAU and the MST and carries out step in signaling procedure in calling procedure.Business information be sent to MST mobile phone loud speaker and make the user hear calling.User's voice data is used as traffic packets and sends to RAU.Above information is sent out and receives under frequency hop environment.Table 1
| ?7EFH | ?MLEN |
| Link No. | MSGType |
| ?MSGID | ?SID |
| Call business district ID | RAUID(h) |
| RAU?ID(1) | TOD(1) |
| TOD(2) | TOD(3) |
| CH state (1) | CH state (2) |
| CH state (3) | The cell type |
| MST?ID(1) | MST?ID(2) |
| MST?ID(3) | MST?ID(4) |
| MST?ID(5) | MST?ID(6) |
| MST?ID(7) | MST?ID(8) |
| Power level | ????- |
Each district is defined as follows in the table 1.Link No. is that grouping is sent to its logical links number and is represented by 16 scale codings:
0-7:DSCH (special signal channel 1) is used to send signaling grouping and traffic packets.
8:BCCH1 (wide control channel #1) is used to send a system information packets.
9:BCCH2 (wide control channel #2) is used to send a frequency information grouping.
A:PCCH (confirm (ACK) or do not confirm (NACK))
B:ACH (request)
Type of message (MSG) is that a data field is used for handling grouping by the second layer.Message id is used to specify the purpose of a grouping.SID is the identifier of a control grouping.Call business ID is the service numbers under the RAU.If call business district ID is " 0 ", just can independent operation.RAU ID is the identifier of the RAU of a current transmission control grouping.The cell type is represented the cell type of RAU.The cell type is as shown in table 2.
Table 2
| Bit 7 | Bit 6-bit 3 | Bit 2-bit 0 | |||||||||
| 1/0 | The HOP cycle | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Cell number |
| 2 | 4 | 8 | 16 | 32 | 64 | 128 | 256 | 512 | |||
Each bit of cell type is defined as follows:
Bit 7: RAU uses the frequency domain of whole frequency band for " 1 " expression, and is that " 0 " expression RAU is used as the frequency division pattern.
Bit 6-3: beat the cycle (label)
Bit 2-0: the cell number of distributing to RAU
Simultaneously, at the TOD (1) of table 1 expression, TOD (2) and TOD (3) represent the date respectively, hour and minute.Just, TOD (1) expression date byte; TOD (2) represents hour byte; TOD (3) represents minute byte.Channel status (1), (2), (3) are 24 bit informations and the state of indicating each bar in 8 wireless channels.Give each channel allocation 3 bit:
Idle condition: " 000 "
Paging state: " 101 "
User mode: " 111 "
Access state: " 010 "
Power level is the transmitted power of the RAU that represented by 16 level.MST ID (1)-(8) are the identifiers that occupies the MST of wireless channel.
Between MST in the communication process, if depart from the MST in call service district of RAU or the calling channel of RAU all is in busy condition, the calling between the adjacent MST is impossible.
Direct calling is directly to call out between MST by RAU, to overcome because the restriction of the calling channel of RAU and situation, the restriction in the call service district of RAU and the variable RF environment that can not call out.For realizing direct calling between the MST and irrelevant in the all-calls district with the call service district of RAU.Should under frequency hop environment, carry out such calling.In Fig. 1, represented the direct calling between MST5 and the MST6.
Fig. 2 represents traditional control procedure of the direct calling between the MST.Fig. 3 is illustrated in the process that is used to change the frequency hopping map during the direct calling between the MST.
If originating MS T user dials telephone number and call button that stops MST in proper order, ORG MST sends a paging grouping in step 10.In this case, the part of whole frequency band is assigned to ORG MST as the direct calling frequency band.The part of direct calling frequency band is designated as direct calling control frequency band.ORG MST selects a direct calling control frequency band to send the paging grouping.Send at ORG MST under the situation of a single-frequency rather than frequency hopping, TER MST searches for all direct calling control frequency bands.This is because TER MST does not know that frequency band of directly calling in the control frequency band is used as paging branch group of received.
If TER MST paging receiving grouping by search direct calling control frequency band, it is just according to the frequency hopping of various parameter generating the paging grouping that is sent out from ORG MST.TERMSR sends a paging in step 12 according to frequency hopping and confirms grouping.TER MST waits for a flow search grouping with frequency hopping.In Fig. 3, represent these steps in detail.
TER MST sends paging and confirms grouping in frequency hopping.ORG MST scans received frequency hopping when sending the paging grouping.Therefore, confirm grouping even TER MST sends paging when frequency hopping, ORG MST is accurately paging receiving affirmation grouping also.Paging receiving confirms that the ORG MST of grouping is in step 14 transmitted traffic search grouping.The TER MST that receives flow search grouping confirms grouping in the search of step 16 transmitted traffic.TER MST sends an ALERTING message and produces a bell signal in step 18.By such controlled step, the ring echo is sent to the mobile phone of ORG MST.
If the user takes the mobile phone of TER MST, TER MST just turns off bell signal and closes ring loopback cent group (CSA) one of step 20 transmission.Confirm grouping if ORG MST sends a CSA in step 22, just form a communication path in step 24.Cut off connection request signal if send one in step 26 from TER MST, ORG MST just sends a release signal for TER MST in step 28.In step 30, TER MST sends a release end signal for ORG MST.
Yet in above control procedure, TER MST may lose synchronously when waiting for flow search grouping.This is that TER MST waits for flow search grouping with frequency hopping because ORG MST sends the paging grouping of single-frequency.Then, TER MST should the initialization receiver, but it but can not confirm grouping because it is sending paging.Therefore in traditional control procedure of the direct calling between MST, not accurately to keep therefore can not realize well synchronously between ORG MST and the TER MST to directly call.
The purpose of this invention is to provide a kind of control method, be used for mobile communication system keep between the mobile subscriber terminal synchronously.
Another object of the present invention provides a kind of frequency hopping mapping control method that is used for the direct calling between the mobile subscriber terminal.
According to an aspect of the present invention, be used to control the method for the direct calling between the mobile subscriber terminal, comprise step: send twice paging grouping continuously, be used for response and call out fill order search termination mobile subscriber terminal; With synchronous by the paging detection of packets that at first receives, producing a frequency hopping, receiver of initialization is also waited for the paging grouping of a frequency hopping, and sends a paging and confirm that grouping is to the mobile subscriber terminal and the second received paging packet synchronization of starting.
In conjunction with the drawings following detailed description above and other objects of the present invention feature and benefit will be more obvious.
Fig. 1 represents a general mobile communication system net;
Fig. 2 is a flow chart that traditional control procedure of directly calling between the mobile subscriber terminal is described;
Fig. 3 explanation is used to change the conventional procedure of frequency hopping mapping during the direct calling of mobile subscriber terminal; With
Fig. 4 is the flow chart that the control procedure of the direct calling between the mobile subscriber terminal is described according to the present invention.
In the following description, do not describe known structure and the function that needs to understand operation of the present invention in detail.
With reference to figure 4, be to be understood that ORG MST sends twice paging grouping and is used to search for a TERMST.If ORG MST user presses telephone number and the call button of TER MST, the paging grouping that ORG MST sends single-frequency for TER MST in step 42 in proper order.In this case, the part of whole frequency band is designated as the direct calling frequency band, and the part of direct calling frequency band is designated as direct calling control frequency band.ORG MST selects one of direct calling control frequency band to send paging grouping in 2 seconds.Paging grouping from ORG MST is sent to all adjacent TER MST.
TER MST receives the paging grouping of single-frequency and adjusts synchronously.In step 44, TERMST is according to the frequency hopping of various parameter generating in the paging grouping that is received single-frequency.Produce the inner receiver of TER MST initialization of frequency hopping and the reception of the paging grouping that wait receives frequency hopping.In step 46, ORG MST send about 4 second frequency hopping paging grouping.TERMST will the be initialised frequency hopping of receiver and the paging packet synchronization of frequency hopping.TER MST confirms grouping in step 48 according to being sent a paging by synchronous frequency hopping to ORG MST.TER MST sends a paging with the frequency hopping from ORG MST and confirms that grouping is to wait for a flow search grouping.
After synchronous quilt between ORG MST and TER MST is kept, be used to notify the signal/business information of a communication path to be sent out and to receive to carry out call.After calling was finished, the signal/business information that is used for terminated call was sent out and receives to discharge communication path.
Therefore, the paging grouping by single-frequency adjust between ORG MST and the TER MST synchronously, and divide into groups to keep, thereby prevented step-out during the direct calling by the frequency hopping paging.
As a result, during the direct calling between the MST in mobile communication system, ORG MST sends the paging grouping of single-frequency and the paging of frequency hopping is divided into groups to TER MST.TER MST by single-frequency paging grouping adjust synchronously and and divide into groups to keep synchronously by the frequency hopping paging.Therefore can not lose synchronously.
Although represented with reference to certain preferred embodiment and described the present invention, one of ordinary skill in the art is to be understood that under the prerequisite that does not deviate from the spirit and scope that claims require can carry out various modification.
Claims (3)
1. be used to control the method for the direct calling between the mobile subscriber terminal, mobile subscriber terminal is called out by send and receive a control grouping and a signal/traffic packets through wireless channel, and described method comprises step:
Send two paging groupings continuously, be used for the search of response calling fill order and stop mobile subscriber terminal; With
Synchronous by the paging detection of packets that at first receives, producing a frequency hopping, receiver of initialization is also waited for the paging grouping of a frequency hopping, and sends a paging and confirm that grouping is to the mobile subscriber terminal and the second received paging packet synchronization of starting.
2. the method for claim 1 is characterized in that, described continuous forwarding step comprises, divide into groups 2 seconds and frequency hopping paging of the paging that sends single-frequency continuously divided into groups for 4 seconds.
3. be used to control the method for the direct calling between the mobile subscriber terminal, mobile subscriber terminal is called out by send and receive a control grouping and a signal/traffic packets through wireless channel, and described method comprises step:
The paging that sends a single-frequency is divided into groups, and stops mobile subscriber terminal and respond calling out the paging grouping that frequency hopping is sent in the fill order repeating transmission to search for one;
Produce the frequency hopping of the paging packet synchronization of and single-frequency, receiver of initialization is also waited for the paging grouping of a frequency hopping; With
Send one and the synchronous page response grouping of frequency hopping for the mobile subscriber terminal that starts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98115523A CN1206268A (en) | 1997-06-25 | 1998-06-25 | Method for controlling direct call between mobile subscriber terminals in mobile communication system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR27079/97 | 1997-06-25 | ||
| CN98115523A CN1206268A (en) | 1997-06-25 | 1998-06-25 | Method for controlling direct call between mobile subscriber terminals in mobile communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1206268A true CN1206268A (en) | 1999-01-27 |
Family
ID=5224616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98115523A Pending CN1206268A (en) | 1997-06-25 | 1998-06-25 | Method for controlling direct call between mobile subscriber terminals in mobile communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1206268A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101438605B (en) * | 2006-02-13 | 2012-08-29 | 沃达方集团有限公司 | Method and system for establishing a direct radio communication between two or more user devices in a cellular mobile communication system |
-
1998
- 1998-06-25 CN CN98115523A patent/CN1206268A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101438605B (en) * | 2006-02-13 | 2012-08-29 | 沃达方集团有限公司 | Method and system for establishing a direct radio communication between two or more user devices in a cellular mobile communication system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1077387C (en) | Multi-mode radio telephone | |
| RU2149518C1 (en) | Process of transmission of broadcast information | |
| AU715222B2 (en) | A method for system registration and cell reselection | |
| JP2586316B2 (en) | Sector configuration mobile communication system | |
| CN1204767C (en) | Method for information shared between cellular and local radio communication system | |
| CA2182589C (en) | Process for transmitting data in packets in a mobile radio system | |
| CA1220585A (en) | Method for establishing a radio circuit | |
| US20030206530A1 (en) | Communication system with fast control traffic | |
| US4757496A (en) | Distributed telephone system | |
| US20120307705A1 (en) | Multicast communication method in a cdma mobile communication system | |
| CN1158685A (en) | System for transmitting paging signals usingtime-division multiplexing | |
| EP0746915A1 (en) | Allocation of time slots in a mobile communication system | |
| CN1385049A (en) | Communications system providing call type indication for group calls | |
| CN1050257C (en) | Method of searching for a signalling channel in a radio system | |
| KR950000360B1 (en) | Radio communications system | |
| US6385455B1 (en) | Method and system in a transceiver for selecting a communication parameter for communicating with a concentrated subscriber unit | |
| KR100217727B1 (en) | Direct communication control method in mobile wireless communication system | |
| WO1998021912A2 (en) | Method for increasing control channel capacity in a communication system | |
| US20020061757A1 (en) | Variable mobile address lengths for efficient mobile paging and standby | |
| JP3128008B2 (en) | Termination control method for mobile communication system and mobile station thereof | |
| CN1206268A (en) | Method for controlling direct call between mobile subscriber terminals in mobile communication system | |
| CN1391741A (en) | Inter-frequency measurement | |
| CN1200576C (en) | Method for preventing block data call conflict in wireless local loop system | |
| CN1336082A (en) | Broadcast facility | |
| KR20000013205A (en) | Data redundant transmission method of uplink for bidirectional radio paging system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |