WO2017147798A1 - 一种数据通信的方法、装置及系统 - Google Patents

一种数据通信的方法、装置及系统 Download PDF

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Publication number
WO2017147798A1
WO2017147798A1 PCT/CN2016/075280 CN2016075280W WO2017147798A1 WO 2017147798 A1 WO2017147798 A1 WO 2017147798A1 CN 2016075280 W CN2016075280 W CN 2016075280W WO 2017147798 A1 WO2017147798 A1 WO 2017147798A1
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WIPO (PCT)
Prior art keywords
call
channel
traffic channel
terminal
indication
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PCT/CN2016/075280
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English (en)
French (fr)
Inventor
徐燕
罗正华
黄成富
Original Assignee
海能达通信股份有限公司
Priority date (The priority date 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 date listed.)
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Application filed by 海能达通信股份有限公司 filed Critical 海能达通信股份有限公司
Priority to US16/309,854 priority Critical patent/US10659143B2/en
Priority to EP16891989.2A priority patent/EP3439404B1/en
Priority to PCT/CN2016/075280 priority patent/WO2017147798A1/zh
Publication of WO2017147798A1 publication Critical patent/WO2017147798A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H04W76/45—Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15542—Selecting at relay station its transmit and receive resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/34—Selective release of ongoing connections
    • H04W76/36—Selective release of ongoing connections for reassigning the resources associated with the released connections

Definitions

  • Embodiments of the present invention relate to the field of communications technologies, and in particular, to a data communication method, apparatus, and system.
  • the extended virtual cluster (English called Extended Pseudo Trunk, English abbreviated as XPT) system is a distributed cluster system without control center.
  • An XPT system can be composed of a plurality of stations, and a plurality of repeating stations under each station provide a shared channel, and the plurality of repeating stations include a fixed main repeater and a plurality of slave repeaters.
  • the XPT system can maximize the system capacity without additional cost, and effectively utilize the existing channel resources to fully meet the needs of low-end cluster customers.
  • the XPT system does not require a dedicated control channel. This scheme can meet the US FB6 frequency specification, and its frequency allocation can be shared with other systems. For example, different users can allocate the same frequency. Therefore, the XPT system is widely used due to its low cost and high utilization of channel resources.
  • each terminal is managed by a dedicated control channel and control center.
  • the control channel maintains a long transmission state, and all terminals are waiting on the control channel.
  • the control center can release the channel resources by issuing an RC command to the designated terminal.
  • this method requires a dedicated control center and a control channel to manage the terminal.
  • the control center issues an RC command to release the channel resource, which is not suitable for the distributed cluster system without the control center.
  • the terminal interrupts the call of the transmitting terminal. Therefore, in a distributed cluster system without a control center, how to use the current system resources to interrupt the call of the transmitting terminal To reduce the waste of channel resources has become a problem of concern.
  • the embodiment of the invention provides a method, a device and a system for data communication, which can interrupt a call of a transmitting terminal and release channel resources, and has high flexibility and high efficiency.
  • an embodiment of the present invention provides a data communication method, which is applied to a first terminal, where the method includes:
  • Determining an idle channel transmitting a data handshake request carrying the interrupt information on the idle channel;
  • the interrupt information includes at least an indication of a call for interrupting the traffic channel;
  • the jump channel indication included in the data handshake response is redirected to the traffic channel specified by the relay station;
  • an embodiment of the present invention provides a data communication method, which is applied to a relay station, and the method includes:
  • the interruption information includes at least an indication of the call that interrupts the traffic channel;
  • the data handshake response includes a data handshake response type and a jump channel indication;
  • the jump channel indication is used to indicate that the first terminal jumps to the relay station designation a traffic channel, the designated traffic channel being the same as the traffic channel determining the interrupted call;
  • an embodiment of the present invention provides an apparatus for data communication, where the apparatus includes:
  • a sending unit configured to determine an idle channel, and send a data handshake request carrying the interrupt information on the idle channel;
  • the interrupt information includes at least an indication of a call for interrupting the traffic channel;
  • a receiving unit configured to receive a data handshake response sent by the relay station
  • a jump unit configured to: when the type of the data handshake response is a data handshake response that allows an interrupt And jumping to the traffic channel specified by the repeater according to the jump channel indication included in the data handshake response;
  • a calling unit configured to initiate a call on the traffic channel when it is determined that the second terminal occupying the traffic channel to make a call interrupts the call and releases resources of the traffic channel.
  • an embodiment of the present invention provides an apparatus for data communication, where the apparatus includes:
  • a detecting unit configured to detect a data handshake request that is sent by the first terminal and that carries the interrupt information; where the interrupt information includes at least an indication of a call that interrupts the traffic channel;
  • a determining unit configured to determine, according to the indication of the call that interrupts the traffic channel, a traffic channel that interrupts the call;
  • a first sending unit configured to send a data handshake response to the first terminal, where the data handshake response includes a data handshake response type and a jump channel indication;
  • the jump channel indication is used to indicate that the first terminal jumps To the traffic channel designated by the repeater, the designated traffic channel is the same as the service channel for determining the interrupted call;
  • a second sending unit configured to embed an interrupted call indication on an adjacent channel of the service channel that determines the interrupted call, to indicate that the second terminal that stays on the traffic channel that determines the interrupted call interrupts the call, and releases the The resources of the traffic channel.
  • an embodiment of the present invention provides an apparatus for data communication, including a memory, and one or more programs, wherein one or more programs are stored in a memory and configured to be one or one
  • the above processor executing the one or more programs includes instructions for performing the following operations:
  • Determining an idle channel transmitting a data handshake request carrying the interrupt information on the idle channel;
  • the interrupt information includes at least an indication of a call for interrupting the traffic channel;
  • the jump channel indication included in the data handshake response is redirected to the traffic channel specified by the relay station;
  • an embodiment of the present invention provides an apparatus for data communication, including a memory, and one or more programs, wherein one or more programs are stored in the memory and configured to be one or one
  • the above processor executes the one or more programs comprising Instructions for doing the following:
  • the interruption information includes at least an indication of the call that interrupts the traffic channel;
  • the data handshake response includes a data handshake response type and a jump channel indication;
  • the jump channel indication is used to indicate that the first terminal jumps to the relay station designation a traffic channel, the designated traffic channel being the same as the traffic channel determining the interrupted call;
  • an embodiment of the present invention provides a system for data communication, including a first terminal, a relay station, and a second terminal, where:
  • the first terminal is configured to: determine an idle channel, send a data handshake request carrying the interrupt information on the idle channel; the interrupt information includes at least an indication of a call for interrupting the traffic channel; and receive a data handshake response sent by the relay station;
  • the type of the data handshake response is a data handshake response that allows the interruption
  • the jump channel indication included in the data handshake response is redirected to the traffic channel specified by the relay station; when it is determined that the service channel is occupied for calling
  • the second terminal interrupts the call and releases the resources of the traffic channel, initiates a call on the traffic channel;
  • the relay station is configured to: detect a data handshake request that is sent by the first terminal and carry the interruption information; the interruption information includes at least an indication of a call that interrupts the traffic channel; and determine a service for interrupting the call according to the indication of the call that interrupts the service channel Transmitting a data handshake response to the first terminal, the data handshake response includes a data handshake response type and a jump channel indication; the jump channel indication is used to instruct the first terminal to jump to the relay station a designated traffic channel, the designated traffic channel being the same as the traffic channel determining the interrupted call; embedding an interrupted call indication in the adjacent channel of the traffic channel determining the discontinued call, for indicating the stay in the determining The second terminal of the traffic channel that interrupts the call interrupts the call and releases the resources of the traffic channel;
  • the second terminal is configured to: when the adjacent channel of the service channel initiating the call detects the interrupted call indication, send a voice end frame to interrupt the call and release resources of the traffic channel.
  • the method, device and system for data communication provided by the embodiments of the present invention may be implemented by the terminal in the system
  • the idle channel initiates a handshake request containing the interrupt information
  • the terminal that interrupts the call service is interrupted by the relay station, releases the corresponding channel resource, and indicates that the terminal that initiated the handshake request switches to the interrupted channel to initiate the call.
  • the solution provided by the invention can initiate an interrupt request by the terminal, implements flexibility, and effectively reduces channel resource waste.
  • combining interrupt requests with handshake requests saves air interface overhead and reduces call collisions.
  • FIG. 1 is a schematic diagram of an application scenario of a method for data communication according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a method for data communication according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a format of a data handshake request (Handshake Request) frame protocol data unit PDU carrying an interrupt information;
  • FIG. 4 is a schematic diagram of a data handshake response (Handshake Response) PDU format
  • FIG. 5 is a flowchart of a method for data communication according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of embedding RC signaling in a data frame
  • FIG. 7 is a schematic diagram of embedding RC signaling in a voice frame
  • FIG. 8 is a schematic diagram of a method for a repeater to maintain a channel for interrupting a terminal
  • FIG. 9 is a flowchart of a method for data communication according to another embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a method for data communication according to another embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a method for data communication according to another embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a method for data communication according to another embodiment of the present invention.
  • FIG. 13 is a schematic diagram of an apparatus for data communication according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of an apparatus for data communication according to another embodiment of the present invention.
  • FIG. 15 is a schematic diagram of an apparatus for data communication according to still another embodiment of the present invention.
  • FIG. 16 is a schematic diagram of an apparatus for data communication according to another embodiment of the present invention.
  • FIG. 17 is a schematic diagram of a system for data communication according to another embodiment of the present invention.
  • the embodiment of the invention provides a method, a device and a system for data communication, which can interrupt a call of a transmitting terminal and release channel resources, and have high flexibility and high efficiency.
  • FIG. 1 is a schematic diagram of an application scenario of a data communication method according to an embodiment of the present invention.
  • the above method of data communication will be described below with reference to FIGS. 1 to 12.
  • BS CH1 and BS CH2 are different time slots of the first carrier frequency
  • BS CH3 and BS CH4 are different time slots of the second carrier frequency.
  • the BS CH1 is occupied by the terminal A calling terminal E (A Call E); the BS CH2 is occupied by the terminal C group call group 1 (C Call G1); and the BS CH3 is occupied by the terminal D group call group 2 (D Call G2).
  • Hdr represents a voice header
  • VA, VB, VC, VD, VE, and VF represent voice A, voice B, voice C, voice D, voice E, and voice F.
  • Term is the end of speech frame.
  • Terminal B (MS B) is a member of G1, and is receiving a group call initiated by terminal C. It is assumed that terminal B is the first terminal and wants to interrupt the call of terminal C, so that terminal B initiates a group call of G1, so as to include C. Members of the G1 hear their calls.
  • the method of the present invention will be described below by taking this application scenario as an example.
  • the method may include, for example:
  • S201 Determine an idle channel, and send a data handshake request carrying the interrupt information on the idle channel; the interrupt information includes at least an indication of a call for interrupting the traffic channel.
  • the transmitting terminal releases the occupied traffic channel resources, so that the first terminal can initiate a call by using the released service channel resource. Then, an idle channel can be determined, and a data handshake request carrying the interrupt information is sent on the idle channel. For example, if the first terminal in the system is receiving the first If the second terminal receives the call for a long time, if the transmitting terminal terminates the channel for a long time, if the first terminal receiving the call wants to interrupt the speech of the transmitting terminal and initiates a call on the interrupted channel, it can transmit and carry using any idle channel in the system. A data handshake request to interrupt the message. For another example, when the channel resources are occupied, if a terminal wants to initiate an alarm, the data handshake request including the interrupt information may be initiated by using the idle channel in the system to interrupt the call of the transmitting terminal.
  • the manner of determining the idle channel may be: determining the preset dedicated interrupt channel as an idle channel.
  • the write frequency configuration reserves a dedicated logical channel for use as an interrupt, that is, the preset dedicated interrupt channel is used for interrupt use and cannot be used as a traffic channel.
  • the terminal initiates a data handshake request carrying the interrupt information and can only jump to the dedicated logical channel to send, and waits for the data handshake response to be received, and then jumps to the service channel of the interrupted call and waits for the channel to be released for reuse.
  • the traffic channel initiates a call.
  • a dedicated logical channel is reserved as a dedicated interrupt channel, the success rate of the terminal interrupting the call of the transmitting terminal is higher, the reliability is high, and the efficiency is high. It should be noted that for different carrier frequencies, only one logical channel needs to be reserved, and no logical channel is reserved for each carrier frequency. A logical channel resource is reserved for each carrier frequency for interrupting the call, which saves channel resources.
  • embodiments of the present invention can support interrupted calls between carriers and carrier terminals, as well as interrupted calls between carriers.
  • any idle channel within the system can be used as an interrupt.
  • This method is not only suitable for interrupted calls of terminals in a single station, but also for interrupted calls of multi-station terminals.
  • this approach can also increase system traffic channel usage and reduce system bandwidth requirements.
  • determining the idle channel may include determining, when the same-station call is received, the same-frequency idle channel of the traffic channel receiving the call as the idle channel.
  • determining the idle channel may include determining an idle channel of the free relay station broadcasted by the system as an idle channel.
  • determining the idle channel may include determining, when the cross-site call is received, the channel that receives the cross-site call as an idle channel.
  • the terminal that has enabled the interrupt call function needs to jump to the dedicated interrupt channel to initiate a data handshake request carrying the interrupt information. This method is more reliable.
  • the terminal enabled with the interrupt call function selects the idle channel in the station to initiate a data handshake request carrying the interrupt information.
  • This way is relative to the write frequency
  • the way to set up a dedicated interrupt channel is more flexible.
  • the terminal may preferentially select the same-frequency idle channel (another idle time slot) that receives the call to send a data handshake request carrying the interrupt information, thereby improving system access performance of the interrupted call. If another time slot in which the terminal is receiving the call is also busy, the terminal switches to the idle time slot of the free relay station broadcasted by the system to send a data handshake request carrying the interrupt information.
  • the embodiment of the present invention can also support inter-station interrupted calls.
  • the terminal when the terminal receives a voice call sent by another station at the stop station, the terminal can directly initiate a call back interruption at the channel where the stop station receives the call.
  • one bit can be added to the embedded voice link control frame LC of the air interface for identifying that it is a cross-site call.
  • the terminal resolves the cross-site call and initiates the cross-site callback interruption, since the channel uplink is idle, the cross-site data handshake request carrying the interrupt information can be directly initiated on the channel receiving the call.
  • the first terminal may send a data handshake request carrying the interrupt information on the idle channel.
  • the interrupt information includes at least an indication of a call that interrupts the traffic channel.
  • FIG. 3 it is a schematic diagram of a data handshake request (Handshake Request) frame protocol data unit (referred to as a protocol data unit in English).
  • FIG. 4 it is a schematic diagram of a data handshake response (Handshake Response) PDU format.
  • a PDU information unit definition table for a data handshake request and a data handshake response Referring to Table 1, a PDU information unit definition table for a data handshake request and a data handshake response.
  • the free repeater Free Repeater the system selects a repeater including a free time slot from the list of idle repeaters as a free transfer station.
  • FIG. 4 a schematic diagram of a data handshake response PDU format sent by the relay station.
  • the jump channel indication included in the data handshake response is redirected to the traffic channel specified by the relay station.
  • the determining, by the second terminal that occupies the service channel to make a call, to interrupt the call and release the resources of the service channel includes:
  • the voice end frame sent by the second terminal When the voice end frame sent by the second terminal is detected on the traffic channel, determine that the second terminal that occupies the call on the service channel interrupts the call and releases the resource of the traffic channel; wherein, the voice end frame is used The resource indicating that the second terminal interrupts the call and releases the traffic channel; or
  • the handshake end frame broadcasted by the relay station When the handshake end frame broadcasted by the relay station is detected on the traffic channel, determining that the second terminal occupying the service channel to make a call interrupts the call and releases the resource of the traffic channel; the handshake end frame is used for Instructing the repeater to maintain a traffic channel for the first terminal after the second terminal releases the resources of the traffic channel.
  • Hdr is a voice header
  • VA, VB, VC, VD, VE, and VF represent voice A, voice B, voice C, voice D, voice E, and voice F.
  • Term is the end of speech frame.
  • Handshake_Term is the handshake end frame.
  • Handshake_Req is a data handshake request
  • Handshake_Rsp is a data handshake response.
  • the first downward arrow of the MS B indicates that the terminal B jumps from the channel 2 to the idle channel 4 and sends a data handshake request (Handshake_Req) carrying the interrupt information, that is, MS B Jump From CH 2 to CH4 and TX Handshake_Req interrupt message.
  • Handshake_Req data handshake request
  • the MS B sends a Handshake_Req, that is, a data handshake request.
  • the arrow pointing to BS CH1 by BS CH4 indicates that the interrupt CH2 call is transmitted, and the RC command (ie, TX Interrupt CH2Call, Embed RC info on next slot frame (CH1)) is embedded in the adjacent time slot CH1.
  • the MSB then waits for the repeater response to allow the interrupt to inform it that it has jumped to the traffic channel CH2 that is making the call.
  • the second downward arrow of MS B indicates that after the handshake response is detected, it jumps to channel CH2 (After Handshake_Rsp is checked, jump to TI_CH: 2).
  • MS B detects the voice Term of the traffic channel CH2 (aka voice end frame, receives this frame to indicate channel release) or handshake response After the handshake frame (Handshake Term), call back (B call Back G1). That is, as shown in Figure 1: after check Term on TI_CH: 2, begin to call back G1.
  • RX represents the reception
  • TX represents the transmission.
  • B calls G1 the purpose is to allow people including C to receive calls sent by themselves).
  • the intermediate station periodically embeds an RC command (Embed RC periodeally) on the adjacent channel CH1 of the CH2 after detecting the data handshake request of the MS B carrying the interrupt information.
  • the first terminal after determining the idle channel, sends a data handshake request carrying the interrupt information on the idle channel, and if the data handshake response sent by the relay station is received, when the type of the data handshake response is When the data handshake waits for a response, the first terminal waits.
  • the relay station determines that the second terminal that occupies the traffic channel to make a call interrupts the call and releases the resource of the traffic channel, sends a data handshake response to the first terminal to allow the interrupt, and the first terminal according to the data
  • the handshake channel included in the handshake response indicates a jump to the traffic channel specified by the repeater and initiates a call.
  • the first terminal waits on the idle channel; when the first terminal receives the data handshake response of the interrupted transmission sent by the relay station, determining that the second terminal occupying the service channel to make a call interrupts the call and releases The resources of the traffic channel, jump to the traffic channel and initiate a call on the traffic channel.
  • the method may further include: transmitting a voice end frame to interrupt when the adjacent channel of the traffic channel initiating the call detects the interrupted call indication Calling and releasing resources of the traffic channel.
  • the interrupted call indication may specifically be a reverse channel RC command.
  • the interrupted call indication may also be other signaling as long as it can indicate that the second terminal that is on the traffic channel determining the interrupted call interrupts the call and releases the resources of the traffic channel.
  • the receiving terminal when the terminal in the system is receiving a call, if the transmitting terminal occupies the channel for a long time, the receiving terminal wants to interrupt the speech of the transmitting terminal, and initiates a call on the channel of the interrupted call, it will use any one of the systems.
  • the idle channel first sends a data handshake request carrying the interrupt information, waits for the data handshake response of the interrupt to be allowed, and then switches to the service channel of the ongoing call notified by the repeater, and then initiates a subsequent call after detecting that the service channel is released.
  • the use of the current system resources in the distributed cluster communication system without the control center is implemented to enable the terminal to interrupt the transmitting device. Calling reduces the waste of channel resources.
  • combining interrupt requests with handshake requests not only saves air interface overhead, but also achieves the advantage of interrupting calls and reducing call collisions.
  • FIG. 5 is a flowchart of a method for data communication according to an embodiment of the present invention, which is applied to a relay station.
  • the method may include, for example:
  • the interrupt information includes at least an indication of a call that interrupts the traffic channel.
  • the relay station detects the data handshake request frame carrying the interrupt information on any of the idle channels or the dedicated interrupt channel preset by the write frequency, that is, parsing the call handshake request, for example, may include analyzing the type of the handshake and interrupting the service channel. Call indication, address information, etc.
  • an Interrupt Designated Channel for interrupting a traffic channel may be included in the data handshake request. If it is determined that the value in the indication of the call for interrupting the traffic channel is not zero, determining a traffic channel for interrupting the call according to a value in the indication of the call for interrupting the traffic channel; when the call of the service channel is interrupted When the value of the call is zero and the destination address information carried in the data handshake request determines that there is a transit call corresponding to the destination address information, the service channel corresponding to the transit call is determined as the service channel of the interrupted call; When the value of the indication of the call that interrupts the service channel is zero and the destination address information carried in the data handshake request determines that there is no intermediate call corresponding to the destination address information, the priority is prioritized according to the preset call priority. The traffic channel corresponding to the low-level call is determined as the traffic channel of the interrupted call.
  • the repeater interrupts the channel specified by the terminal. If the value of the instruction to interrupt the call of the traffic channel is zero, the repeater decides which traffic channel to interrupt. The repeater can check whether the same call is being transferred by parsing the address information, and if so, the repeater interrupts the same call that is being transferred. If it is not the same call, it is an emergency call, and the repeater can interrupt the low priority call in the site according to the priority of the call-group call->full call->emergency call from low to high.
  • the jump channel indication is used to indicate that the first terminal jumps to a traffic channel specified by the relay station, and the designated traffic channel is the same as the service channel that determines the interrupted call.
  • the repeater needs to reply to the terminal data handshake response, fill the jumped channel and the data handshake response type, so that the terminal knows which channel can be interrupted to initiate its own subsequent call.
  • the repeater controls to embed the interrupted call indication in the downlink air interface data of the adjacent channel that interrupts the traffic channel, so that the transmitting terminal detects the embedded interrupted call indication of the adjacent time slot, and can stop the call of the transmitting end and release the channel resource.
  • interrupt call indication As an example, the interrupted call indication may also be other signaling, such as custom interrupted call signaling.
  • the interrupted call indication is embedded in the adjacent channel of the service channel that determines the interrupted call, and is used to indicate that the second terminal that is staying on the traffic channel that determines the interrupted call interrupts the call and releases the resource of the traffic channel.
  • the relay station responds to the terminal data handshake response and controls the voice superframe broadcasted by the downlink air interface in the adjacent channel CH1 of the interrupt channel CH2.
  • Inter-interrupted call indication such as RC signaling, in the middle of the F frame.
  • the embedding the interrupted call indication on the adjacent channel of the traffic channel determining the interrupted call comprises: when it is determined that the adjacent channel of the traffic channel of the interrupted call broadcasts a data frame (Data), The synchronization pattern of the data frame is replaced with the interrupt call indication. Further, the replacing the synchronization pattern of the data frame with the interrupted call indication is specifically: embedding an interrupted call indication every other synchronization, and stopping embedding when the number of times of inserting the interrupted call indication is greater than a preset number of times Interrupt the call indication.
  • Data data frame
  • the synchronization pattern of the data frame is replaced with the interrupt call indication.
  • the replacing the synchronization pattern of the data frame with the interrupted call indication is specifically: embedding an interrupted call indication every other synchronization, and stopping embedding when the number of times of inserting the interrupted call indication is greater than a preset number of times Interrupt the call indication.
  • the embedding the interrupted call indication on the adjacent channel of the traffic channel determining the interrupted call comprises: when it is determined that the adjacent channel of the traffic channel of the interrupted call broadcasts a voice superframe, The interrupted call indication is embedded in an F frame of the voice superframe.
  • the repeater detects a data handshake request frame carrying the interrupt information on the idle channel or the preset dedicated interrupt channel, and determines which traffic channel to be disconnected, if the adjacent time slot of the traffic channel is interrupted.
  • the data frame (Data) is broadcasted, and the first data frame synchronization pattern to be forwarded is directly replaced with embedded RC signaling, and then the RC is embedded in the data frame every 2 frames, and the data frame synchronization pattern of the third frame is replaced with Embedded RC signaling, RC signaling is embedded 3 times in succession to ensure that the transmitting terminal can detect RC signaling in the adjacent slot.
  • the period of embedding RC is 120ms.
  • FIG. 6 it is a schematic diagram of embedding RC signaling in a data frame.
  • the adjacent time slot of the interrupted traffic channel broadcasts an encrypted voice frame (A, B, C, D, E, F)
  • the FR is embedded in the F frame position of the downlink voice superframe
  • the voice F is The middle 32-bit signaling is switched to be embedded in the RC
  • the F frame of the next voice superframe is embedded in the RC
  • the embedded RC signaling is continuously embedded 3 times
  • the CRC interval period is 360 ms.
  • the RC can only be embedded in the F frame position of the voice superframe, and the superframe of the encrypted information (A, B, C, D, E, F) can not be embedded, so the interval interval of CRC for two consecutive CRCs is 720ms.
  • FIG. 7 it is a schematic diagram of embedding RC signaling in a voice frame.
  • the data handshake request received by the relay station further includes a handshake type, the method further comprising: parsing the data handshake request, when the handshake type of the data handshake request is an interrupt request carrying a service, Maintaining a traffic channel for the first terminal.
  • the handshake type Handshake Kind
  • the terminal continues the subsequent transmission service after interrupting the channel, and the repeater does not receive a new uplink after interrupting the channel.
  • the handshake type is 2
  • the terminal only releases the channel, and no subsequent service is to be sent. After the interrupter interrupts the channel, it does not need to maintain the channel for the interrupter.
  • the maintaining the traffic channel for the first terminal includes: controlling the traffic channel from forwarding traffic when detecting a voice end frame sent by the second terminal on a traffic channel that determines to interrupt the call.
  • the state is switched to the handshake hold state, and the repeater transmits a handshake end frame on the traffic channel.
  • the voice end frame is used to indicate that the second terminal interrupts the call and releases the resources of the traffic channel.
  • the handshake end frame is configured to indicate that the repeater station maintains a traffic channel for the first terminal after the second terminal releases the resource of the traffic channel.
  • the relay station maintains a traffic channel for the first terminal by sending a handshake response end frame for a period of time, which may be 360 ms.
  • FIG. 8 a schematic diagram of a method for a repeater to maintain a channel for an interrupt terminal.
  • the intermediate station determines that the handshake is carried by the service by analyzing the handshake type carried in the handshake request to be 1, and needs to maintain the channel for the interrupter after the channel is released.
  • the service channel CH2 of the interrupted call detects the voice end frame Term sent by the interrupted party MS C
  • the system needs to control the service channel CH2 of the interrupted call to switch from the forwarding service state (Repeating) to the handshake hold phase (Handshake hangtime).
  • MS B for the interrupter terminal B (MS B) keep channel
  • Keep CH For MS B the uplink frame of another terminal is detected during the channel keeping, and the direct discard is not processed.
  • the English terms appearing in Figure 8 refer to the Chinese interpretation of the English terms appearing in Figures 1 to 7. The same English terms represent the same meaning in Chinese.
  • the relay station when the relay station determines that the data handshake request carrying the interruption information is a cross-site data handshake request, the relay station sends the cross-site data handshake request to the source station corresponding to the data handshake request carrying the interruption information; Transmitting the data handshake response to the first terminal includes: receiving a data handshake response sent by the source station; and sending a data handshake response to the first terminal when the data handshake response is a response to allow interruption
  • the data handshake response is of a type that allows an interrupt; when the data handshake response is a response to reject the interrupt, a data handshake response is sent to the first terminal, the type of the data handshake response being a rejection interrupt.
  • FIG. 9 is a flowchart of a method for data communication according to another embodiment of the present invention.
  • the method may include, for example:
  • the first terminal determines an idle channel, and sends a data handshake request carrying the interrupt information on the idle channel.
  • the relay station detects the data handshake request.
  • S903 The relay station sends a data handshake response.
  • the relay station sends an RC command.
  • S905 The first terminal detects the handshake response and jumps to the interrupt service channel.
  • the second terminal detects the RC instruction.
  • the second terminal is the interrupted party and the transmitting side.
  • the transmitting terminal transmits the voice at CH2, and detects whether there is an RC in the adjacent channel CH1 for each frame of voice transmission.
  • RC When RC is detected, it is resolved according to Table 2 to stop the transmission request (0101), and if the interrupted party is enabled, the call function can be interrupted, and the transmission can be stopped. If it resolves to the stop transmission command (0100), it must stop transmitting itself regardless of whether the terminal enables the interrupted call function.
  • the stop transmission command is usually initiated by the dispatcher control, and the dispatcher decides which call to interrupt, and notifies the relay station to fill the RC command to stop transmitting the command.
  • the second terminal sends the current voice frame, and then sends the voice end frame to release the channel.
  • S908 The first terminal detects the end of voice frame and initiates a call on the interrupted traffic channel.
  • FIG. 10 is a schematic diagram of a method for data communication according to another embodiment of the present invention.
  • the two carrier frequency XPT system shown in FIG. 10 has four channels CH1 to CH4, wherein CH2 and CH3 are forwarding call services, wherein BS CH2 is occupied by the service of the terminal C call group 1 (C call G1), BS CH3 is occupied by the service of the terminal D call group 2 (D call G2), and the BS CH1 and the BS CH4 are in the idle (Idle CH) state.
  • CH2 and CH3 are forwarding call services
  • BS CH2 is occupied by the service of the terminal C call group 1 (C call G1)
  • BS CH3 is occupied by the service of the terminal D call group 2 (D call G2)
  • the BS CH1 and the BS CH4 are in the idle (Idle CH) state.
  • the English terminology appearing in FIG. 10 refers to the Chinese interpretation of the English term appearing in FIG. 1 to FIG. 9, and the same English term represents the same
  • the interrupting party MS B presses PTT (English name is Push To Talk, Chinese name is pressed to speak), and wants to initiate a callback interrupt transmitting terminal.
  • PTT English name is Push To Talk, Chinese name is pressed to speak
  • the MS C transmits a voice call, so that the group call G1 members including the MS C can receive the call.
  • the MS B detects that another time slot of the received call is idle, that is, the same frequency has an idle channel, and the interrupting MS B uses the same frequency idle channel CH1 to transmit and carry the interrupt.
  • the data handshake request Handshake_Req of the message waits for the repeater to respond to Handshake_Rsp to notify it to jump to CH2, and detects the channel release at CH2 (by receiving the voice end frame Term and its own handshake end frame (HandshakeTerm) to identify the channel release) and then switching to CH2. Initiate a call back.
  • the relay station receives the data handshake request Handshake_Req carrying the interrupt information on the traffic channel CH1, and forwards the data handshake response Handshake_Rsp for a period of time (360 ms in the figure) in the next 60 ms, and judges that the interrupted traffic channel is CH2, so it is broadcast on the CH1 air interface.
  • the reverse channel signaling RC is embedded every 120 ms in the data frame in order to interrupt the call of CH2.
  • the interrupted terminal MSC When the interrupted terminal MSC transmits the voice in the CH2, it receives the reverse channel signaling RC that detects whether the intra-frequency adjacent time slot CH1 has a broadcast. If the reverse channel signaling RC is detected and it is determined that the transmission command is to be stopped, the MS C sends the current speech frame, and then sends a frame of speech end frame Term to end the transmission, releasing the channel.
  • FIG. 11 is a schematic diagram of a method for data communication according to another embodiment of the present invention.
  • the solution of the invention can be used for interrupting calls in a single station as well as interrupting calls in a multi-station.
  • the embodiment shown in FIG. 11 is described by taking an example of a cross-site callback interrupt in a multi-station system.
  • the terminal MS A initiates a group call at the station 3 (terminal A call group 1, ie, A Call G1).
  • the terminal MS B stays at station 1 and receives a group call (A Call G1) on channel 1 (CH1).
  • the terminal MS C stays at station 2 and receives a group call (A Call G1) on channel 2 (CH2).
  • a case where two terminals MS B and MS C in different sites receive a cross-site call and simultaneously initiates an interrupt handshake is taken as an example for description.
  • the MS B of the station 1 receives the group call of the cross-station at the CH1 of the staying station
  • the identification is an inter-station call
  • the channel CH1 that selects the received call initiates a data handshake request carrying the interrupt information, with the purpose of interrupting the G1.
  • the MS C of the station 2 initiates a data handshake request carrying the interrupt information using the received call channel CH2 in the station 2.
  • the terminal when the terminal receives a voice call sent by another station at the stop station, the terminal can directly initiate a call back interruption on the channel that receives the call at the stop station. Because the channel uplink is idle. In a specific implementation, one bit can be added to the embedded voice link control frame LC of the air interface for identifying that it is a cross-site call.
  • the cross-site handshake request carrying the interrupt information may be directly initiated on the channel receiving the call.
  • the station 1 or the station 2 of the station 2 detects the data handshake request carrying the interrupt information, and only crosses the station.
  • the source station 3 of the initiating group is called G1, and the inter-office handshake is sent downstream (the data handshake response type is 4) on the downlink receiving the request.
  • the source station 3 determines which data handshake request to carry the interrupt information.
  • the general rule is to first process first. If the source station 3 first receives the cross-site handshake of the MS B, the reply site 1 allows the B to interrupt the call, and then receives the MS. C's cross-site handshake request, reply site 2 rejects C to interrupt the call.
  • the transit station of the station 1 receives the response information that allows the B to interrupt the call, and sends a data handshake response that allows the interrupt to be sent in the air interface (the data handshake response type is 0), and the MS B receives the data handshake response that allows the interrupted call, and waits in the A Call. G1's traffic channel, waiting for A to release the channel.
  • the transit station of station 2 receives the response rejecting the C interrupt call, and sends a data handshake response that rejects the interrupt (the data handshake response type is 5), and the MS C receives the data handshake response of the same call that is being rejected.
  • the user prompts "Interrupted Call Failed".
  • the repeater should reserve a channel for the terminal that interrupts the call successfully to avoid the channel being preempted.
  • the repeater of the source station after receiving the handshake request of the cross-station, the repeater of the source station needs to notify the adjacent channel (CH2) of the interrupted traffic channel (CH1) to embed the RC, in order to interrupt the group call of CH1, the source station. It is also necessary to record which terminal (MSB) initiated interrupt request is allowed.
  • CH2 adjacent channel
  • MSB terminal
  • the source station When the source station detects the voice Term frame on the interrupt service channel (CH1), it switches the state of CH1 from Repeating to handshake hangtime, and controls the downlink air interface of CH1 to start forwarding handshake (the source address is filled in MSB, and the destination address is filled in G1). The purpose is to reserve the channel for the MSB. This handshake only allows the MSB to initiate a call during the hangtime.
  • CH1 interrupt service channel
  • the MSB waits for CH1 to release the channel. If the MSB detects the voice end frame Voice Term or the handshake end frame Handshake Term, it indicates that CH1 has been released, and the MSB directly initiates voice on CH1.
  • the idle transfer station or the dedicated interrupt channel preset by the write frequency can be controlled by the programmable key to send the interrupt information.
  • the data handshake request (the handshake type needs to be set to 2) is to release the long-occupied channel.
  • the repeater embeds reverse channel signaling in the adjacent channel occupying the channel, causing the interrupted party (transmitting terminal) to stop transmitting and releasing the channel. In this application scenario, the repeater does not need to maintain the channel after detecting the voice Term, and directly switches from the relay service Repeating state to the channel idle state (Channel Idle).
  • the terminal can initiate an alert service.
  • the following is reserved in the write frequency configuration.
  • the broken channel is taken as an example to illustrate the application of the alarm service interruption call.
  • the terminal sends an alarm service to initiate a data handshake request carrying the interrupt information on the dedicated interrupt channel, and the repeater decides which voice service to be transmitted or the transfer call hold phase call hangtime, and then notifies the terminal to switch to the service channel of the interrupted call. Subsequent alarm service.
  • the dispatching station can directly issue a violent interrupt command (RC is 0100 in Table 2) to interrupt the designated traffic channel.
  • a violent interrupt command (RC is 0100 in Table 2)
  • the repeater embeds the RC in the downlink of the adjacent channel of the traffic channel that specifies the interrupted call, and notifies the terminal to automatically release the channel.
  • the dispatching station can also support the issuance of the stop transmission request (0101) command, and the second terminal can stop the transmission only if it can be interrupted. If the second terminal detects the stop transmission request command but does not enable the interrupted call function, its transmission will not be affected.
  • the terminal may first send a data handshake request carrying the interrupt information on any idle channel in the system, wait for the data handshake response that allows the interrupt, and then switch to the ongoing call notified by the repeater.
  • the service channel initiates a subsequent call by detecting the release of the traffic channel.
  • Any one of the idle channels in the system includes a system-assigned idle channel and a write-frequency preset dedicated interrupt channel.
  • any idle repeater in the system detects a data handshake request carrying the interrupt information, interrupts the traffic channel of the ongoing call, and notifies the terminal to switch to the service channel that has interrupted the call for subsequent call.
  • the interrupting service channel of the repeater first interrupts the same call, and then interrupts the traffic channel with low priority according to the priority of the call.
  • the repeater can flexibly adjust the embedding rules of the reverse channel signaling according to the type of the air interface frame forwarded by the service channel, and improve the system access performance of the interrupted call.
  • the interrupted call function of the cross-station call is also supported.
  • Cross-site call interruption can initiate a handshake interruption on the channel receiving the call, improving the effective utilization of channel resources.
  • the embodiments of the present invention can achieve the following beneficial effects:
  • Inter-station call interruption can initiate a handshake interruption on the channel receiving the call, without wasting idle Channel resources can achieve the purpose of interrupting calls.
  • the system maintains the channel for the interruption of the carrying service, which can reduce the call collision in the system and ensure that only one terminal interrupts the call and only one success is allowed.
  • FIG. 13 is a schematic diagram of an apparatus for data communication according to an embodiment of the present invention.
  • the device shown can include:
  • the sending unit 1301 is configured to determine an idle channel, and send a data handshake request carrying the interrupt information on the idle channel;
  • the interrupt information includes at least an indication of a call for interrupting the traffic channel;
  • the receiving unit 1302 is configured to receive a data handshake response sent by the relay station.
  • the jump unit 1303 is configured to: when the type of the data handshake response is a data handshake response that allows the interrupt, jump to the traffic channel specified by the relay station according to the jump channel indication included in the data handshake response;
  • the calling unit 1304 is configured to initiate a call on the traffic channel when it is determined that the second terminal occupying the traffic channel to make a call interrupts the call and releases the resources of the traffic channel.
  • the calling unit is specifically configured to: when detecting a voice ending frame sent by the second terminal on the traffic channel, determine that the second terminal that uses the service channel to make a call interrupts the call, and releases the service channel. a resource; wherein the voice end frame is used to indicate that the second terminal interrupts a call, releases resources of the traffic channel; or, when a handshake end frame broadcast by the relay station is detected on the traffic channel, Determining, by the second terminal occupying the service channel, the second terminal to interrupt the call, and releasing the resource of the traffic channel; the handshake end frame is used to indicate that the relay station after the second terminal releases the resource of the traffic channel The first terminal maintains a traffic channel.
  • the sending unit is specifically configured to: determine a preset dedicated interrupt channel as an idle channel; or, when determining to receive a co-site call, determine an intra-frequency idle channel of the traffic channel that receives the call as an idle channel; Alternatively, the idle channel of the free repeater broadcasted by the system is determined to be an idle channel; or, when it is determined that the cross-site call is received, the channel receiving the cross-site call is determined to be an idle channel.
  • the device further includes:
  • a release unit configured to detect an interrupted call indication when an adjacent channel of the traffic channel initiating the call is detected At the time, the voice end frame is transmitted to interrupt the call and release the resources of the traffic channel.
  • FIG. 14 a block diagram of an apparatus for data communication according to another embodiment of the present invention is shown. Including: at least one processor 1401 (eg, CPU), memory 1402, receiver 1403, transmitter 1404, and at least one communication bus 1405 for enabling connection communication between these devices.
  • the processor 1401 is configured to execute executable modules, such as computer programs, stored in the memory 1402.
  • the memory 1402 may include a high speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory such as at least one disk memory.
  • One or more programs are stored in the memory and are configured to be executed by one or more processors 1401.
  • the one or more programs include instructions for:
  • Determining an idle channel transmitting a data handshake request carrying the interrupt information on the idle channel;
  • the interrupt information includes at least an indication of a call for interrupting the traffic channel;
  • the jump channel indication included in the data handshake response is redirected to the traffic channel specified by the relay station;
  • the processor 1401 is specifically configured to execute the one or more programs including instructions for performing the following operations:
  • the second terminal interrupts the call and releases the resource of the traffic channel.
  • the handshake end frame is used to indicate that the repeater station maintains a traffic channel for the first terminal after the second terminal releases the resource of the traffic channel.
  • the processor 1401 is specifically configured to execute the one or more programs including instructions for performing the following operations:
  • the same-frequency idle channel of the traffic channel receiving the call is determined as an idle channel
  • the channel receiving the cross-site call is determined to be an idle channel.
  • the processor 1401 is specifically configured to execute the one or more programs including instructions for performing the following operations:
  • the voice end frame is transmitted to interrupt the call and release the resources of the traffic channel.
  • FIG. 15 is a schematic diagram of an apparatus for data communication according to an embodiment of the present invention.
  • the device shown can include:
  • the detecting unit 1501 is configured to detect a data handshake request that is sent by the first terminal and that carries the interrupt information, where the interrupt information includes at least an indication of a call that interrupts the traffic channel;
  • a determining unit 1502 configured to determine, according to the indication of the call that interrupts the traffic channel, a traffic channel that interrupts the call;
  • the first sending unit 1503 is configured to send a data handshake response to the first terminal, where the data handshake response includes a data handshake response type and a jump channel indication, where the jump channel indication is used to indicate that the first terminal jumps Going to the traffic channel designated by the repeater, the designated traffic channel is the same as the service channel determining the interrupted call;
  • a second sending unit 1504 configured to embed an interrupted call indication in an adjacent channel of the traffic channel that is determined to interrupt the call, to indicate that the second terminal that stops on the service channel that determines the interrupted call interrupts the call, and releases The resources of the traffic channel.
  • the determining unit is specifically configured to:
  • the service corresponding to the transit call is The channel is determined to be a traffic channel for interrupting the call;
  • the traffic channel corresponding to the call with the lower priority is determined as the traffic channel of the interrupted call.
  • the second sending unit is specifically configured to:
  • the interrupted call indication is embedded in the voice superframe.
  • the device further includes:
  • a holding unit configured to maintain a traffic channel for the first terminal when the handshake type of the data handshake request is an interrupt request carrying a service.
  • the holding unit is specifically configured to:
  • the traffic channel is controlled to be switched from the forwarding service state to the handshake hold state, and the repeater sends a handshake on the traffic channel.
  • End frame wherein the voice end frame is used to indicate that the second terminal interrupts the call and releases resources of the traffic channel.
  • the handshake end frame is configured to indicate that the repeater station maintains a traffic channel for the first terminal after the second terminal releases the resource of the traffic channel.
  • the device further includes:
  • a third sending unit configured to: when determining that the data handshake request carrying the interrupt information is a cross-site data handshake request, send the cross-site data handshake request to the source station corresponding to the data handshake request carrying the interrupt information;
  • the first sending unit is specifically configured to: receive a data handshake response sent by the source station; and send a data handshake response to the first terminal when the data handshake response is a response that allows an interrupt, the data handshake response
  • the type is an allowable interrupt; when the data handshake response is a response to reject the interrupt, a data handshake response is sent to the first terminal, the type of the data handshake response being a rejection interrupt.
  • FIG. 16 is a block diagram of an apparatus for data communication according to another embodiment of the present invention.
  • the processor 1601 eg, CPU
  • the processor 1601 is configured to execute an executable module, such as a computer program, stored in the memory 1602.
  • the memory 1602 may include a high speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory such as at least one disk memory.
  • One or more programs are stored in the memory and are configured to be executed by one or more processors 1601.
  • the one or more programs include instructions for:
  • the interruption information includes at least an indication of the call that interrupts the traffic channel;
  • the data handshake response includes a data handshake response type and a jump channel indication;
  • the jump channel indication is used to indicate that the first terminal jumps to the relay station designation a traffic channel, the designated traffic channel being the same as the traffic channel determining the interrupted call;
  • the processor 1601 is specifically configured to execute the one or more programs including instructions for performing the following operations:
  • the service corresponding to the transit call is The channel is determined to be a traffic channel for interrupting the call;
  • the traffic channel corresponding to the call with the lower priority is determined as the traffic channel of the interrupted call.
  • the processor 1601 is specifically configured to execute the one or more programs including instructions for performing the following operations:
  • the interrupted call indication is embedded in the voice superframe.
  • the processor 1601 is specifically configured to execute the one or more programs including instructions for performing the following operations:
  • Parsing the data handshake request when the handshake type of the data handshake request is in a carrying service
  • the traffic channel is maintained for the first terminal.
  • the processor 1601 is specifically configured to execute the one or more programs including instructions for performing the following operations:
  • the traffic channel is controlled to be switched from the forwarding service state to the handshake hold state, and the repeater sends a handshake on the traffic channel.
  • End frame wherein the voice end frame is used to indicate that the second terminal interrupts the call, and the resource of the traffic channel is released; the handshake end frame is used to indicate that the repeater releases the The resource of the traffic channel then maintains a traffic channel for the first terminal.
  • the processor 1601 is specifically configured to execute the one or more programs including instructions for performing the following operations:
  • the cross-site data handshake request is sent to the source station corresponding to the data handshake request carrying the interruption information;
  • the sending a data handshake response to the first terminal includes:
  • FIG. 17 is a schematic diagram of a system for data communication according to another embodiment of the present invention.
  • a system 1700 for data communication includes a first terminal 1300, a relay station 1500, and a second terminal 1800, wherein:
  • the first terminal 1300 is configured to: determine an idle channel, send a data handshake request carrying the interrupt information on the idle channel; the interrupt information includes at least an indication of a call for interrupting the traffic channel; and receive a data handshake response sent by the relay station When the type of the data handshake response is a data handshake response that allows the interruption, the jump channel indication included in the data handshake response is jumped to the traffic channel specified by the relay station; when it is determined that the traffic channel is occupied When the second terminal of the call interrupts the call and releases the resources of the traffic channel, the call is initiated on the traffic channel;
  • the relay station 1500 is configured to: detect a data handshake request that carries the interruption information sent by the first terminal; the interruption information includes at least an indication of a call that interrupts the traffic channel; and determine, according to the indication of the call that interrupts the traffic channel, the interrupted call a traffic channel; sending a data handshake to the first terminal
  • the data handshake response includes a data handshake response type and a jump channel indication; the jump channel indication is used to instruct the first terminal to jump to the traffic channel specified by the repeater, the designated traffic channel Same as the service channel for determining the interrupted call; embedding an interrupted call indication in the adjacent channel of the traffic channel determining the interrupted call, indicating that the second terminal interrupting the call staying on the traffic channel determining the interrupted call And releasing resources of the traffic channel;
  • the second terminal 1800 is configured to: when the adjacent channel of the service channel initiating the call detects the interrupted call indication, send a voice end frame to interrupt the call and release the resource of the traffic channel.
  • the implementation of the first terminal and the repeater can refer to the implementation of the embodiment shown in FIG. 13-16.
  • the invention may be described in the general context of computer-executable instructions executed by a computer, such as a program module.
  • program modules include routines, programs, objects, components, data structures, and the like that perform particular tasks or implement particular abstract data types.
  • the invention can also be practiced in a distributed computing environment, in these points In a cloth computing environment, tasks are performed by remote processing devices that are connected through a communication network.
  • program modules can be located in both local and remote computer storage media including storage devices.
  • the various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
  • the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.
  • the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located A place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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Abstract

一种数据通信的方法，包括：第一终端确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；接收中转台发送的数据握手响应；当所述数据握手响应的类型为允许中断的数据握手响应时，根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道；当确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，在所述业务信道上发起呼叫。本发明实施例可以中断发送终端的呼叫，释放信道资源，灵活性强、效率高。

Description

一种数据通信的方法、装置及系统 技术领域
本发明实施例涉及通信技术领域，具体涉及一种数据通信的方法、装置及系统。
背景技术
扩展式虚拟集群(英文全称为Extended Pseudo Trunk，英文简称为XPT)系统是一种无控制中心的分布式集群系统。一个XPT系统可以由多个站点组成，每个站点下有若干中转台提供共享信道，所述若干中转台包括一个固定的主中转台和多个从中转台。XPT系统可以在不增加额外成本的前提下最大限度的扩展系统容量，有效地利用既有的信道资源，可以完全满足中低端集群客户的需求。XPT系统不需要专门的控制信道，这种方案可以满足美国FB6频率规定，其频率分配可以与其他系统共享，例如不同用户可以分配同样的频率。因此，XPT系统因其成本低、信道资源利用率高的优点得到广泛应用。
现有技术中，存在同一呼叫内的人一直占用信道，导致接收的终端无法中断发射端的呼叫发起回呼的情况。此外，在信道资源全部被占用的情况下，高优先级的用户想发起全呼或紧急呼也无法中断信道资源发起呼叫。因此，需要一种可以中断发送终端的呼叫的方法来满足用户的需求。
在现有的集中式集群系统中，由专门的控制信道和控制中心来管理各终端。平时控制信道保持长发射状态，所有终端都守候在控制信道上。当系统内所有的信道被占用时，控制中心可以通过向指定的终端下发RC指令来释放信道资源。然而，这种方法需要由专门的控制中心和控制信道来管理终端，由控制中心在信道资源被全部占用时，下发RC指令释放信道资源，并不适用于没有控制中心的分布式集群系统接收终端中断发送终端的呼叫。因此，在无控制中心的分布式集群系统中，如何利用当前的系统资源实现中断发送终端的呼叫 以减少信道资源浪费成为一个值得关注的问题。
发明内容
本发明实施例提供了一种数据通信的方法、装置及系统，可以中断发送终端的呼叫，释放信道资源，灵活性强、效率高。
第一方面，本发明实施例提供了一种数据通信的方法，应用于第一终端，所述方法包括：
确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
接收中转台发送的数据握手响应；
当所述数据握手响应的类型为允许中断的数据握手响应时，根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道；
当确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，在所述业务信道上发起呼叫。
第二方面，本发明实施例提供了一种数据通信的方法，应用于中转台，所述方法包括：
检测第一终端发送的携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
根据所述中断业务信道的呼叫的指示确定中断呼叫的业务信道；
向所述第一终端发送数据握手响应，所述数据握手响应包括数据握手响应类型以及跳转信道指示；所述跳转信道指示用于指示所述第一终端跳转至所述中转台指定的业务信道，所述指定的业务信道与所述确定中断呼叫的业务信道相同；
在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示，用于指示停留在所述确定中断呼叫的业务信道上的第二终端中断呼叫、释放所述业务信道的资源。
第三方面，本发明实施例提供了一种数据通信的装置，所述装置包括：
发送单元，用于确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
接收单元，用于接收中转台发送的数据握手响应；
跳转单元，用于当所述数据握手响应的类型为允许中断的数据握手响应 时，根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道；
呼叫单元，用于当确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，在所述业务信道上发起呼叫。
第四方面，本发明实施例提供了一种数据通信的装置，所述装置包括：
检测单元，用于检测第一终端发送的携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
确定单元，用于根据所述中断业务信道的呼叫的指示确定中断呼叫的业务信道；
第一发送单元，用于向所述第一终端发送数据握手响应，所述数据握手响应包括数据握手响应类型以及跳转信道指示；所述跳转信道指示用于指示所述第一终端跳转至所述中转台指定的业务信道，所述指定的业务信道与所述确定中断呼叫的业务信道相同；
第二发送单元，用于在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示，用于指示所述停留在所述确定中断呼叫的业务信道的第二终端中断呼叫、释放所述业务信道的资源。
第五方面，本发明实施例提供了一种用于数据通信的装置，包括有存储器，以及一个或者一个以上的程序，其中一个或者一个以上程序存储于存储器中，且经配置以由一个或者一个以上处理器执行所述一个或者一个以上程序包含用于进行以下操作的指令：
确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
接收中转台发送的数据握手响应；
当所述数据握手响应的类型为允许中断的数据握手响应时，根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道；
当确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，在所述业务信道上发起呼叫。
第六方面，本发明实施例提供了一种用于数据通信的装置，包括有存储器，以及一个或者一个以上的程序，其中一个或者一个以上程序存储于存储器中，且经配置以由一个或者一个以上处理器执行所述一个或者一个以上程序包含 用于进行以下操作的指令：
检测第一终端发送的携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
根据所述中断业务信道的呼叫的指示确定中断呼叫的业务信道；
向所述第一终端发送数据握手响应，所述数据握手响应包括数据握手响应类型以及跳转信道指示；所述跳转信道指示用于指示所述第一终端跳转至所述中转台指定的业务信道，所述指定的业务信道与所述确定中断呼叫的业务信道相同；
在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示，用于指示所述停留在所述确定中断呼叫的业务信道的第二终端中断呼叫、释放所述业务信道的资源。
第七方面，本发明实施例提供了一种用于数据通信的系统，包括第一终端、中转台、第二终端，其中：
所述第一终端用于：确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；接收中转台发送的数据握手响应；当所述数据握手响应的类型为允许中断的数据握手响应时，根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道；当确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，在所述业务信道上发起呼叫；
所述中转台用于：检测第一终端发送的携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；根据所述中断业务信道的呼叫的指示确定中断呼叫的业务信道；向所述第一终端发送数据握手响应，所述数据握手响应包括数据握手响应类型以及跳转信道指示；所述跳转信道指示用于指示所述第一终端跳转至所述中转台指定的业务信道，所述指定的业务信道与所述确定中断呼叫的业务信道相同；在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示，用于指示所述停留在所述确定中断呼叫的业务信道的第二终端中断呼叫、释放所述业务信道的资源；
所述第二终端用于：当在发起呼叫的业务信道的相邻信道检测到所述中断呼叫指示时，发送语音结束帧以中断呼叫、释放所述业务信道的资源。
本发明实施例提供的数据通信的方法、装置及系统，可以由终端在系统内 的空闲信道发起包含中断信息的握手请求，由中转台中断正在进行呼叫业务的终端、释放相应的信道资源，并指示发起握手请求的终端切换到中断的信道以发起呼叫。本发明提供的方案可以由终端发起中断请求，实现灵活，有效减少了信道资源浪费。此外，将中断请求和握手请求相结合，节省了空口开销，并减少了呼叫碰撞。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明中记载的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的数据通信的方法的一应用场景示意图；
图2为本发明一实施例提供的数据通信的方法流程图；
图3为携带中断信息的数据握手请求(Handshake Request)帧协议数据单元PDU格式示意图；
图4为数据握手响应(Handshake Response)PDU格式示意图；
图5为本发明实施例提供的数据通信的方法流程图；
图6为在数据帧中嵌入RC信令的示意图；
图7为在语音帧中嵌入RC信令的示意图；
图8为中转台为中断终端保持信道的方法示意图；
图9为本发明又一实施例提供的数据通信的方法流程图；
图10为本发明又一实施例提供的数据通信的方法示意图；
图11本发明又一实施例提供的数据通信的方法示意图；
图12为本发明又一实施例提供的数据通信的方法示意图；
图13为本发明一实施例提供的数据通信的装置示意图；
图14为本发明另一实施例提供的数据通信的装置示意图；
图15为本发明再一实施例提供的数据通信的装置示意图；
图16为本发明又一实施例提供的数据通信的装置示意图；
图17为本发明又一实施例提供的数据通信的系统示意图。
具体实施方式
本发明实施例提供了一种数据通信的方法、装置及系统可以中断发送终端的呼叫，释放信道资源，灵活性强、效率高。
为了使本技术领域的人员更好地理解本发明中的技术方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
本发明实施例提供的数据通信的方法可以应用于无控制中心的分布式集群系统系统中，例如XPT系统。参见图1，为本发明实施例提供的数据通信的方法的一应用场景示意图。下面结合图1至图12对上述数据通信的方法进行说明。如图1所示，两载频XPT系统内有3个信道：站点信道1(BS CH1)、站点信道2(BS CH2)、站点信道3(BS CH3)被占用，只有站点信道4(BS CH4空闲)。其中，BS CH1和BS CH2为第一载频的不同时隙；BS CH3和BS CH4为第二载频的不同时隙。其中，BS CH1由终端A呼叫终端E(A Call E)占用；BS CH2由终端C组呼组1(C Call G1)占用；BS CH3由终端D组呼组2(D Call G2)占用。其中，Hdr代表语音头，VA、VB、VC、VD、VE、VF代表语音A、语音B、语音C、语音D、语音E、语音F。Term为语音结束帧。终端B(MS B)是G1的组员，正在接收终端C发起的组呼，假设终端B是第一终端，想中断终端C的呼叫，以便终端B发起G1的组呼，以便包括C在内的G1的成员都听到自己的呼叫。下面将以此应用场景为例对本发明的方法进行说明。
参见图2，为本发明一实施例提供的数据通信的方法流程图，应用于终端，所示方法例如可以包括：
S201，确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示。
在无控制中心的分布式集群通信系统中，若系统内的第一终端需要中断发送终端的呼叫，使得发送终端释放占用的业务信道资源，以便第一终端可以利用释放的业务信道资源发起呼叫，则可以确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求。举例说明，若系统内的第一终端正在接收第 二终端的呼叫，若发射终端即第二终端长时间占用信道，若接收呼叫的第一终端想中断发射终端的讲话，在中断的信道上发起呼叫，则可以使用系统内任何一个空闲信道发送携带中断信息的数据握手请求。又如，当信道资源都被占用时，若有终端想发起报警，则可以利用系统内的空闲信道发起包含中断信息的数据握手请求以中断发送终端的呼叫。
在一些实施方式中，确定空闲信道的方式可以是：将预设的专用中断信道确定为空闲信道。具体实现时，写频配置预留一个专用逻辑信道作为中断使用，即预设的专用中断信道用于中断使用，不能作为业务信道使用。在这种实现方式中，终端发起携带中断信息的数据握手请求只能跳转到专用逻辑信道去发送，并且等待接收到数据握手响应后，再跳转到中断呼叫的业务信道等待信道释放再使用所述业务信道发起呼叫。由于预留了一个专用的逻辑信道作为专用中断信道，因此终端中断发送终端的呼叫的成功率更高，可靠性强，效率高。需要说明的是，对于不同载频，只需预留一个逻辑信道即可，不需要每一个载频均预留一个逻辑信道。相对于每一个载频均预留一个逻辑信道资源用于中断呼叫的方式，节省了信道资源。此外，本发明的实施方式可以支持同载频终端之间的中断呼叫，也可以支持跨载频终端之间的中断呼叫。
在另外一些实施方式中，系统内的任何空闲信道均可以作为中断使用。这种方式不仅适用于单站内终端的中断呼叫，还可以适用于多站终端的中断呼叫。特别地，在跨站呼叫中断中，这种方式还可以提高系统业务信道使用率以及降低系统带宽要求。
在一种可能的实现方式中，确定空闲信道可以包括：当确定接收到同站呼叫时，将接收呼叫的业务信道的同频空闲信道确定为空闲信道。
在另一种可能的实现方式中，确定空闲信道可以包括：将系统广播的自由中转台的空闲信道确定为空闲信道。
在另一种可能的实现方式中，确定空闲信道可以包括：当确定接收到跨站呼叫时，将接收所述跨站呼叫的信道确定为空闲信道。
举例说明，若写频预设专用中断信道，使能了中断呼叫功能的终端需要跳转到专用的中断信道发起携带中断信息的数据握手请求。这种方式更加可靠。
举例说明，若写频未配置专用中断信道，使能了中断呼叫功能的终端选择站内的空闲信道去发起携带中断信息的数据握手请求。这种方式相对于写频预 设专用中断信道的方式更加灵活。在确定系统内的空闲信道时，终端可以优先选择接收呼叫的同频空闲信道(另一空闲时隙)发送携带中断信息的数据握手请求，提高中断呼叫的系统接入性能。若终端正在接收呼叫的另一时隙也繁忙，终端切换到系统广播的自由中转台的空闲时隙发送携带中断信息的数据握手请求。
需要说明的是，本发明实施例还可以支持跨站中断呼叫。举例说明，终端在停留站点接收到其它站点发过来的语音呼叫，可以在停留站点接收呼叫的信道直接发起回呼中断。具体实现时，可以在空口的嵌入式语音链接控制帧LC中增加1比特用于识别是跨站呼叫。当终端解析出是跨站呼叫，发起跨站回呼中断时，由于信道上行是空闲的，可在接收呼叫的信道直接发起携带中断信息的跨站数据握手请求。
在确定了空闲信道后，第一终端即可以在所述空闲信道上发送携带中断信息的数据握手请求。其中，所述中断信息至少包括中断业务信道的呼叫的指示。
如图3所示，为携带中断信息的数据握手请求(Handshake Request)帧协议数据单元(英文全称为Protocol Data Unit，英文简称为PDU)格式示意图。如图4所示，为数据握手响应(Handshake Response)PDU格式示意图。
参见表1，为数据握手请求和数据握手响应的PDU信息单元定义表。
表1数据握手信息内容描述
Figure PCTCN2016075280-appb-000001
Figure PCTCN2016075280-appb-000002
Figure PCTCN2016075280-appb-000003
其中，自由中转台Free Repeater:系统从空闲中转台列表中选择一个包括空闲时隙的中转台作为自由中转台。
S202，接收中转台发送的数据握手响应。
参见图4，为中转台发送的数据握手响应PDU格式示意图。
S203，当所述数据握手响应的类型为允许中断的数据握手响应时，根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道。
S204，当确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，在所述业务信道上发起呼叫。
其中，所述确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源包括：
当在所述业务信道上检测到第二终端发送的语音结束帧时，确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源；其中，所述语音结束帧用于表明所述第二终端中断呼叫、释放所述业务信道的资源；或者，
当在所述业务信道上检测到所述中转台广播的握手结束帧时，确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源；所述握手结束帧用于表明所述中转台在所述第二终端释放所述业务信道的资源后为所述第一终端保持业务信道。
以图1为例进行说明。图1中，Hdr为语音头，VA、VB、VC、VD、VE、VF代表语音A、语音B、语音C、语音D、语音E、语音F。Term为语音结束帧。Handshake_Term为握手结束帧。Handshake_Req为数据握手请求，Handshake_Rsp为数据握手响应。终端B(MS B)在CH2接收组呼按下PTT想发起回呼中断时，它需要跳转到站点内的空闲信道CH4或写频预设的专用中断信道发起携带中断信息的数据握手请求。如图1所示，MS B的第一个向下的箭头表示终端B从信道2跳转至空闲信道4发送携带中断信息的数据握手请求(Handshake_Req)，即MS B Jump From CH 2 to CH4 and TX Handshake_Req中断信息。如图1所示，在BS CH4上就出现了MS B发送Handshake_Req即数据握手请求。如图1所示，BS CH4指向BS CH1的箭头表示发送中断CH2呼叫的指示，在相邻时隙CH1嵌入RC指令(即TX Interrupt CH2Call,Embed RC info on next slot frame(CH1))。然后，MSB等待允许中断的中转台响应通知其跳转到正在进行呼叫的业务信道CH2。如图1所示，MS B的第二个向下的箭头表示检测到握手响应后，跳转到信道CH2(After Handshake_Rsp is checked,jump to TI_CH:2)。MS B通过检测到业务信道CH2的语音Term(又名语音结束帧，接收到这帧表明信道释放)或者握手响应结 束帧(Handshake Term)后再去发起回呼(B call Back G1)。即图1所示的：after check Term on TI_CH:2,begin to call back G1。其中，图中RX代表接收，TX代表发送。其中，B呼叫G1，目的是让包括C在内的人都可以接收到自己发送的呼叫)。其中，中转台在检测到MS B的携带中断信息的数据握手请求后，在CH2的相邻信道CH1上短周期性嵌入了RC指令(Embed RC periodeally)。
在一些实施方式中，第一终端在确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求后，若接收到中转台发送的数据握手响应，当所述数据握手响应的类型为数据握手等待响应时，所述第一终端即进行等待。当中转台确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，向所述第一终端发送允许中断的数据握手响应，这时，第一终端根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道并发起呼叫。在这一实现方式中，第一终端在确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求之后，当确定所述中转台发送的数据握手响应为数据握手等待响应时，所述第一终端在所述空闲信道上等待；当所述第一终端接收到中转台发送的允许中断的数据握手响应时，确定所述占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源，跳转至所述业务信道并在所述业务信道上发起呼叫。
在一些实施方式中，若第一终端在所述业务信道上发起呼叫，所述方法还可以包括：当在发起呼叫的业务信道的相邻信道检测到中断呼叫指示时，发送语音结束帧以中断呼叫、释放所述业务信道的资源。所述中断呼叫指示具体可以为反向信道RC指令。当然，所述中断呼叫指示还可以是其他信令，只要是其能够指示停留在所述确定中断呼叫的业务信道上的第二终端中断呼叫、释放所述业务信道的资源即可。
在这一实施例中，当系统内的终端正在接收呼叫时，如果发射终端长时间占用信道，接收终端想中断发射终端的讲话，在中断呼叫的信道上发起呼叫，它将使用系统内任何一个空闲信道先发送携带中断信息的数据握手请求，等待允许中断的数据握手响应，再切换到中转台通知的正在进行呼叫的业务信道，通过检测到业务信道释放后再发起后续呼叫。这一实施例中，实现了在无控制中心的分布式集群通信系统中利用当前的系统资源做到终端中断发送设备的 呼叫，减少了信道资源浪费。此外，将中断请求和握手请求相结合，不仅节省空口开销，而且还达到中断呼叫和减少呼叫碰撞二合一的优势。
参见图5，为本发明实施例提供的数据通信的方法流程图，应用于中转台，所示方法例如可以包括：
S501，检测第一终端发送的携带中断信息的数据握手请求。
其中，所述中断信息至少包括中断业务信道的呼叫的指示。
具体实现时，中转台在任何一个空闲信道或写频预设的专用中断信道检测到携带中断信息的数据握手请求帧，即解析所述呼叫握手请求，例如可以包括解析握手种类、中断业务信道的呼叫的指示以及地址信息等。
S502，根据所述中断业务信道的呼叫的指示确定中断呼叫的业务信道。
如图3和表1所示，在数据握手请求中可以包括中断业务信道的呼叫的指示(Interrupt Designated Channel)。若确定所述中断业务信道的呼叫的指示中的值不为零时，根据所述中断业务信道的呼叫的指示中的值确定中断呼叫的业务信道；当所述中断业务信道的呼叫的指示中的值为零且根据所述数据握手请求中携带的目的地址信息确定存在与所述目的地址信息对应的中转呼叫时，将所述中转呼叫对应的业务信道确定为中断呼叫的业务信道；当所述中断业务信道的呼叫的指示中的值为零且根据所述数据握手请求中携带的目的地址信息确定不存在与所述目的地址信息对应的中转呼叫时，按照预设的呼叫优先级将优先级低的呼叫对应的业务信道确定为中断呼叫的业务信道。
举例说明，若中断业务信道的呼叫的指示中填充的值不为0，中转台中断终端指定的信道。若中断业务信道的呼叫的指示中填充的值为0，由中转台决定要中断哪个业务信道。中转台可以通过解析地址信息检查是否有同一呼叫正在中转，如果有，中转台中断正在中转的同一呼叫。如果不是同一呼叫，是紧急呼，中转台可根据个呼-组呼->全呼->紧急呼从低到高的优先级先中断站点内低优先级的呼叫。
S503，向所述第一终端发送数据握手响应，所述数据握手响应包括数据握手响应类型以及跳转信道指示。
其中，所述跳转信道指示用于指示所述第一终端跳转至所述中转台指定的业务信道，所述指定的业务信道与所述确定中断呼叫的业务信道相同。
具体实现时，中转台在准备中断信道的同时，要先回复终端数据握手响应，填充跳转的信道和数据握手响应类型，以便终端知道可以中断哪个信道的呼叫发起自己后续的呼叫。同时，中转台控制在中断业务信道的相邻信道的下行空口数据中嵌入中断呼叫指示，以便发射的终端检测到邻近时隙的嵌入中断呼叫指示，可以停止发射端的呼叫，释放信道资源。
为了描述的方便，下面实施例中将以中断呼叫指示为RC信令为例进行说明。当然，所述中断呼叫指示也可以是其他信令，例如自定义的中断呼叫信令。
S504，在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示，用于指示停留在所述确定中断呼叫的业务信道上的第二终端中断呼叫、释放所述业务信道的资源。
如图1所示，中转台在空闲的CH4检测到携带中断信息的数据握手请求后，回复终端数据握手响应的同时，控制在中断信道CH2的相邻信道CH1中下行空口广播的语音超帧的F帧中间短周期性的嵌入中断呼叫指示，例如RC信令。
在一些实施方式中，所述在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示包括：当确定所述中断呼叫的业务信道的相邻信道广播的是数据帧(Data)时，将所述数据帧的同步图样替换为所述中断呼叫指示。进一步地，所述将所述数据帧的同步图样替换为所述中断呼叫指示具体为：每隔一个同步嵌入一中断呼叫指示，当嵌入中断呼叫指示的次数大于预设次数时，停止嵌入所述中断呼叫指示。
在一些实施方式中，所述在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示包括：当确定所述中断呼叫的业务信道的相邻信道广播的是语音超帧时，在所述语音超帧的F帧中嵌入所述中断呼叫指示。
以中断呼叫指示为RC指令为例进行说明，中转台在空闲信道或预设专用中断信道检测到携带中断信息的数据握手请求帧，判断要拆哪个业务信道，如果中断业务信道的相邻时隙广播的是数据帧(Data)，直接将第1个即将要转发的数据帧同步图样替换为嵌入RC信令，然后每隔2帧数据帧再嵌入RC，将第3帧数据帧同步图样替换为嵌入RC信令，RC信令连续嵌入3次，确保发射的终端能在邻时隙检测到RC信令。其中，嵌入RC的周期是120ms。如图6所示，为在数据帧中嵌入RC信令的示意图。
举例说明，若中断业务信道的相邻时隙广播的是不带加密语音帧(A、B、C、D、E、F)，在下行转发语音超帧的F帧位置嵌入RC，将语音F中间的32比特信令切换为嵌入RC，下一个语音超帧的F帧再嵌入RC，嵌入RC信令连续嵌入3次，连续两次RC间隔周期为360ms。若中断业务信道的相邻时隙广播的是加密语音帧(A、B、C、D、E、F)，只能在语音超帧的F帧位置嵌入RC，加密信息的超帧(A、B、C、D、E、F)不能嵌入，故加密语音连续两次RC的间隔周期是720ms。如图7所示，为在语音帧中嵌入RC信令的示意图。
在一些实施方式中，中转台接收的所述数据握手请求还包括握手种类，所述方法还包括：解析所述数据握手请求，当所述数据握手请求的握手种类为携带业务的中断请求时，为所述第一终端保持业务信道。具体实现时，如果握手种类(Handshake Kind)为1，表明本次中断是携带业务的中断握手，终端在中断信道后还要继续后续的发射业务，中转台中断信道后在未收到新的上行信息时需要为中断方保持信道；如果握手种类为2，表明本次中断是远程控制释放信道，终端只释放信道，没有后续业务要发送，中转台中断信道后不需要为中断方保持信道。
在一些实施方式中，所述为所述第一终端保持业务信道包括：当在确定中断呼叫的业务信道上检测到所述第二终端发送的语音结束帧时，控制所述业务信道从转发业务状态切换为握手保持状态，中转台在所述业务信道上发送握手结束帧；其中，所述语音结束帧用于表明所述第二终端中断呼叫、释放所述业务信道的资源。所述握手结束帧用于表明所述中转台在所述第二终端释放所述业务信道的资源后为所述第一终端保持业务信道。举例说明，中转台通过发一段时间的握手响应结束帧为第一终端保持业务信道，这一段时间可以是360ms。
举例说明，如图8所示，为中转台为中断终端保持信道的方法示意图。中转台通过解析握手请求中携带的握手种类为1，判断是携带业务的中断握手，在信道释放后需要为中断方保持信道。中转台在中断呼叫的业务信道CH2在空口检测到被中断方MS C发送的语音结束帧Term后，系统需要控制中断呼叫的业务信道CH2从转发业务状态(Repeating)切换到握手保持阶段(Handshake hangtime)，为中断方终端B(MS B)保持信道(Keep CH For MS B)，在保持信道期间检测到别的终端的上行帧，直接丢弃不做处理。需要说 明的是，图8中出现的英文术语请参照图1至图7所出现的英文术语的中文解释，相同英文术语代表的中文含义相同。
在一些实施方式中，中转台当确定携带中断信息的数据握手请求为跨站数据握手请求时，向所述携带中断信息的数据握手请求对应的源站点发送所述跨站数据握手请求；则所述向所述第一终端发送数据握手响应包括：接收所述源站点发送的数据握手响应；当所述数据握手响应为允许中断的响应时，向所述第一终端发送数据握手响应，所述数据握手响应的类型为允许中断；当所述数据握手响应为拒绝中断的响应时，向所述第一终端发送数据握手响应，所述数据握手响应的类型为拒绝中断。具体实现可以参照图11和图12的方法实现。
参见图9，为本发明又一实施例提供的数据通信的方法流程图，所示方法例如可以包括：
S901，第一终端确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求。
S902，中转台检测到所述数据握手请求。
S903，中转台发送数据握手响应。
S904，中转台发送RC指令。
S905，第一终端检测到握手响应，跳转到中断业务信道。
S906，第二终端检测到RC指令。
第二终端是被中断方也是发射方，发射终端在CH2发射语音的同时，每发一帧语音转收检测相邻信道CH1中是否有RC。当检测到RC时，根据表2解析是停止发射请求(0101)，如果被中断方使能可以被中断呼叫功能，才能停止发射。如果解析到停止发射命令(0100)，不管终端是否使能被中断呼叫功能，它都必须停止自身发射。这种实现方式中，停止发射命令通常由调度台控制发起，由调度台决定中断哪路呼叫，通知中转台填充RC命令为停止发射命令。
表2:RC信息
Figure PCTCN2016075280-appb-000004
S907，第二终端发送完当前的语音帧，再发送语音结束帧，释放信道。
S908，第一终端检测到语音结束帧，在中断业务信道上发起呼叫。
参见图10，为本发明又一实施例提供的数据通信的方法示意图。在这一实施例中，对单站下终端优先选择同频的空闲信道发起握手中断进行详细地介绍。图10中所示的2载频的XPT系统内有4个信道CH1～CH4，其中CH2和CH3正在转发呼叫业务，其中，BS CH2被终端C呼叫组1(C call G1)的业务占用，BS CH3被终端D呼叫组2(D call G2)的业务占用，BS CH1和BS CH4处于空闲(Idle CH)状态。需要说明的是，图10中出现的英文术语请参照图1至图9所出现的英文术语的中文解释，相同英文术语代表的中文含义相同。
当中断方终端MS B正在业务信道CH2上接收自己的语音呼叫阶段，这时中断方MS B按下PTT(英文全称为Push To Talk，中文名称为按下键讲话)想发起回呼中断发送终端MS C的发射，发起语音呼叫，让包括MS C在内的组呼G1成员都可以接收到通话。MS B检测到接收呼叫的另一时隙是空闲的，即：同频有空闲信道，中断方MS B使用同频的空闲信道CH1发送携带中断 信息的数据握手请求Handshake_Req，等待中转台响应Handshake_Rsp通知其跳转到CH2，在CH2检测到信道释放(通过接收语音结束帧Term和自己的握手结束帧(HandshakeTerm)识别信道释放)后再切换到CH2发起回呼。
中转台在业务信道CH1接收到携带中断信息的数据握手请求Handshake_Req，在下一个60ms转发一段时间(图中是360ms)的数据握手响应Handshake_Rsp,同时判断中断的业务信道是CH2，故在CH1空口广播的数据帧中每隔120ms嵌入反向信道信令RC，目的是中断CH2的呼叫。
被中断方终端MSC在CH2发射语音时，转接收检测同频相邻时隙CH1是否有广播的反向信道信令RC，如果检测到反向信道信令RC并判断是要停止发射命令，MS C发送完当前的语音帧，再发送一帧语音结束帧Term结束发射，释放信道。
参见图11，为本发明又一实施例提供的数据通信的方法示意图。
本发明方案既可以用于单站内中断呼叫，也适用于多站内中断呼叫。图11所示实施例以多站系统下跨站回呼中断为例来进行说明。
如图11所示，终端MS A在站点3发起组呼(终端A呼叫组1，即A Call G1)。终端MS B停留在站点1，在信道1(CH1)接收组呼(A Call G1)。终端MS C停留在站点2，在信道2(CH2)接收组呼(A Call G1)。下面以不同站点内两个终端MS B、MS C接收到跨站呼叫，同时发起中断握手的情形为例进行说明。
如图11所示，当站点1的MS B在停留站点的CH1接收到跨站的组呼，识别是跨站呼叫，选择接收呼叫的信道CH1发起携带中断信息的数据握手请求，目的是中断G1的呼叫。同时站点2的MS C使用站点2内的接收呼叫信道CH2发起携带中断信息的数据握手请求。
需要说明的是，终端在停留站点接收到其它站点发过来的语音呼叫，可以在停留站点接收呼叫的信道直接发起回呼中断。因为信道上行是空闲的。具体实现时，可以在空口的嵌入式语音链接控制帧LC中增加1比特用于识别是跨站呼叫。当终端解析出是跨站呼叫，发起跨站回呼中断时，可在接收呼叫的信道直接发起携带中断信息的跨站握手请求。
站点1或站点2的中转台检测到携带中断信息的数据握手请求，只跨站发 给发起组呼G1的源站点3，同时在接收到请求的中转台下行下发跨站握手等待(数据握手响应类型为4)。由源站点3来判断处理哪个携带中断信息的数据握手请求，一般规则是先来先处理，如果源站点3先接收到MS B的跨站握手，回复站点1允许B中断呼叫，后收到MS C的跨站握手请求，回复站点2拒绝C中断呼叫。
站点1的中转台接收到允许B中断呼叫的响应信息，在空口下发允许中断的数据握手响应(数据握手响应类型为0)，MS B接收到允许中断呼叫的数据握手响应，待在A Call G1的业务信道，等待A释放信道。
站点2的中转台接收到拒绝C中断呼叫的响应，在空口下发拒绝中断的数据握手响应(数据握手响应类型为5)，MS C接收到同一呼叫正在进行的拒绝中断的数据握手响应，通知用户提示“中断呼叫失败”。
中转台要为中断呼叫成功的终端预留信道，避免信道被抢占。
如图12所述，源站点的中转台接收到跨站的握手请求后，需通知在中断业务信道(CH1)的相邻信道(CH2)嵌入RC，目的是打断CH1的组呼，源站点还需要记录是哪个终端(MSB)发起的中断请求被允许。
当源站点在中断业务信道(CH1)检测到语音Term帧时，要切换CH1的状态从Repeating到握手hangtime，同时控制CH1的下行空口开始转发握手Term(源地址填写MSB，目的地址填写G1)，目的是为MSB保留信道，这个握手等待hangtime期间只允许MSB发起呼叫。
MSB等待CH1释放信道。如果MSB检测到语音结束帧Voice Term或握手结束帧Handshake Term，表明CH1已经释放，MSB在CH1上直接发起语音。
在一些实施方式中，如果系统内的管理者发现有终端长期占用信道未释放信道资源，可以通过可编程键控制在系统内的空闲中转台或写频预设的专用中断信道发送携带中断信息的数据握手请求(握手种类需要设置为2)，目的是释放长期占用的信道。中转台给在占用信道的相邻信道中嵌入反向信道信令，让被中断方(发射终端)停止发射，释放信道。这种应用场景下，中转台检测到语音Term后不需要保持信道，直接从中转业务Repeating状态切换到信道空闲状态(Channel Idle)。
在一些实施方式中，终端可以发起报警业务。下面以写频配置预留专用中 断信道为例来说明报警业务中断呼叫的应用。终端发报警业务都先在专用中断信道发起携带中断信息的数据握手请求，由中转台决定中断哪路正在发射的语音业务或中转呼叫保持阶段call hangtime，再通知终端切换到中断呼叫的业务信道进行后续的报警业务。
在一些实施方式中，调度台可以直接下发暴力中断指令(表2中RC为0100)中断指定的业务信道。中转台接收到暴力中断指令后，在指定中断呼叫的业务信道的相邻信道下行嵌入RC，通知终端自动释放信道。当站点内所有信道全忙时，只有调度台可以控制下发暴力中断指令来释放信道。除此之外，调度台也可以支持下发停止发射请求(0101)指令，第二终端只有使能可以被中断呼叫功能，才能停止发射。如果第二终端检测到停止发射请求指令，但是未使能被中断呼叫功能，它的发射将不受影响。
在本发明提供的数据通信的方法中，终端可以在系统内任何一个空闲信道上先发送携带中断信息的数据握手请求，等待允许中断的数据握手响应，再切换到中转台通知的正在进行呼叫的业务信道，通过检测到业务信道释放后再发起后续呼叫。系统内任何一个空闲信道包括系统分配的空闲信道和写频预设的专用中断信道。当终端选择系统分配的空闲信道发起数据握手请求时，终端优先使用停留的同频空闲信道发起握手中断，可以提高中断呼叫的系统接入性能。
在本发明提供的数据通信的方法中，系统内任一空闲中转台检测到携带中断信息的数据握手请求，中断正在进行呼叫的业务信道，通知终端切换到已经中断呼叫的业务信道进行后续呼叫。其中，中转台中断业务信道先中断同一呼叫，再根据呼叫优先级优先中断优先级低的业务信道。此外，中转台可以根据业务信道转发的空口帧类型灵活调整反向信道信令的嵌入规则，提高中断呼叫的系统接入性能。
在本发明提供的数据通信的方法中，还支持跨站呼叫的中断呼叫功能。跨站呼叫中断可以在接收呼叫的信道发起握手中断，提高信道资源的有效利用。
综上所述，本发明实施例能够达到以下有益效果：
1、将握手和中断呼叫结合，提供更有效的分布式集群系统中断方案，用较少的信道资源达到中断呼叫的目的。
2、跨站呼叫中断可以在接收呼叫的信道发起握手中断，不需要浪费空闲 信道资源就可以达到中断呼叫的目的。
3、系统为携带业务的中断保持信道，可减少系统中的呼叫碰撞，确保多个终端中断呼叫只允许一个成功。
4、根据空口帧类型灵活调整反向信道信令的嵌入规则，提高中断呼叫的系统接入性能。
下面对本发明实施例提供的方法对应的装置进行介绍。
参见图13，为本发明一实施例提供的数据通信的装置示意图。所示装置可以包括：
发送单元1301，用于确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
接收单元1302，用于接收中转台发送的数据握手响应；
跳转单元1303，用于当所述数据握手响应的类型为允许中断的数据握手响应时，根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道；
呼叫单元1304，用于当确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，在所述业务信道上发起呼叫。
进一步地，所述呼叫单元具体用于当在所述业务信道上检测到第二终端发送的语音结束帧时，确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源；其中，所述语音结束帧用于表明所述第二终端中断呼叫、释放所述业务信道的资源；或者，当在所述业务信道上检测到所述中转台广播的握手结束帧时，确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源；所述握手结束帧用于表明所述中转台在所述第二终端释放所述业务信道的资源后为所述第一终端保持业务信道。
进一步地，所述发送单元具体用于：将预设的专用中断信道确定为空闲信道；或者，当确定接收到同站呼叫时，将接收呼叫的业务信道的同频空闲信道确定为空闲信道；或者，将系统广播的自由中转台的空闲信道确定为空闲信道；或者，当确定接收到跨站呼叫时，将接收所述跨站呼叫的信道确定为空闲信道。
进一步地，所述装置还包括：
释放单元，用于当在发起呼叫的业务信道的相邻信道检测到中断呼叫指示 时，发送语音结束帧以中断呼叫、释放所述业务信道的资源。
参见图14，是本发明另一实施例提供的数据通信的装置的框图。包括：至少一个处理器1401(例如CPU)，存储器1402，接收器1403，发送器1404和至少一个通信总线1405，用于实现这些装置之间的连接通信。处理器1401用于执行存储器1402中存储的可执行模块，例如计算机程序。存储器1402可能包含高速随机存取存储器(RAM：Random Access Memory)，也可能还包括非不稳定的存储器(non-volatile memory)，例如至少一个磁盘存储器。一个或者一个以上程序存储于存储器中，且经配置以由一个或者一个以上处理器1401执行所述一个或者一个以上程序包含用于进行以下操作的指令：
确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
接收中转台发送的数据握手响应；
当所述数据握手响应的类型为允许中断的数据握手响应时，根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道；
当确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，在所述业务信道上发起呼叫。
在一些实施方式中，处理器1401具体用于执行所述一个或者一个以上程序包含用于进行以下操作的指令：
在所述业务信道上检测到第二终端发送的语音结束帧或者所述中转台广播的握手结束帧时，在所述业务信道上发起呼叫；其中，所述语音结束帧用于表明所述第二终端中断呼叫、释放所述业务信道的资源；所述握手结束帧用于表明所述中转台在所述第二终端释放所述业务信道的资源后为所述第一终端保持业务信道。
在一些实施方式中，处理器1401具体用于执行所述一个或者一个以上程序包含用于进行以下操作的指令：
将预设的专用中断信道确定为空闲信道；或者，
当确定接收到同站呼叫时，将接收呼叫的业务信道的同频空闲信道确定为空闲信道；或者，
将系统广播的自由中转台的空闲信道确定为空闲信道；或者，
当确定接收到跨站呼叫时，将接收所述跨站呼叫的信道确定为空闲信道。
在一些实施方式中，处理器1401具体用于执行所述一个或者一个以上程序包含用于进行以下操作的指令：
当在发起呼叫的业务信道的相邻信道检测到中断呼叫指示时，发送语音结束帧以中断呼叫、释放所述业务信道的资源。
参见图15，为本发明一实施例提供的数据通信的装置示意图。所示装置可以包括：
检测单元1501，用于检测第一终端发送的携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
确定单元1502，用于根据所述中断业务信道的呼叫的指示确定中断呼叫的业务信道；
第一发送单元1503，用于向所述第一终端发送数据握手响应，所述数据握手响应包括数据握手响应类型以及跳转信道指示；所述跳转信道指示用于指示所述第一终端跳转至所述中转台指定的业务信道，所述指定的业务信道与所述确定中断呼叫的业务信道相同；
第二发送单元1504，用于在所述中断确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示，用于指示所述停留在所述确定中断呼叫的业务信道的第二终端中断呼叫、释放所述业务信道的资源。
进一步地，所述确定单元具体用于：
当所述中断业务信道的呼叫的指示中的值不为零时，根据所述中断业务信道的呼叫的指示中的值确定中断呼叫的业务信道；
当所述中断业务信道的呼叫的指示中的值为零且根据所述数据握手请求中携带的目的地址信息确定存在与所述目的地址信息对应的中转呼叫时，将所述中转呼叫对应的业务信道确定为中断呼叫的业务信道；
当所述中断业务信道的呼叫的指示中的值为零且根据所述数据握手请求中携带的目的地址信息确定不存在与所述目的地址信息对应的中转呼叫时，按照预设的呼叫优先级将优先级低的呼叫对应的业务信道确定为中断呼叫的业务信道。
进一步地，第二发送单元具体用于：
当确定所述中断呼叫的业务信道的相邻信道广播的是数据帧时，将所述数据帧的同步图样替换为所述中断呼叫指示；
当确定所述中断呼叫的业务信道的相邻信道广播的是语音超帧时，在所述语音超帧中嵌入所述中断呼叫指示。
进一步地，所述装置还包括：
保持单元，用于当所述数据握手请求的握手种类为携带业务的中断请求时，为所述第一终端保持业务信道。
进一步地，所述保持单元具体用于：
当在确定中断呼叫的业务信道上检测到所述第二终端发送的语音结束帧时，控制所述业务信道从转发业务状态切换为握手保持状态，所述中转台在所述业务信道上发送握手结束帧；其中，所述语音结束帧用于表明所述第二终端中断呼叫、释放所述业务信道的资源。所述握手结束帧用于表明所述中转台在所述第二终端释放所述业务信道的资源后为所述第一终端保持业务信道。进一步地，所述装置还包括：
第三发送单元，用于当确定携带中断信息的数据握手请求为跨站数据握手请求时，向所述携带中断信息的数据握手请求对应的源站点发送所述跨站数据握手请求；
所述第一发送单元具体用于：接收所述源站点发送的数据握手响应；当所述数据握手响应为允许中断的响应时，向所述第一终端发送数据握手响应，所述数据握手响应的类型为允许中断；当所述数据握手响应为拒绝中断的响应时，向所述第一终端发送数据握手响应，所述数据握手响应的类型为拒绝中断。
参见图16，是本发明另一实施例提供的数据通信的装置的框图。包括：至少一个处理器1601(例如CPU)，存储器1602，接收器1603，发送器1604和至少一个通信总线1605，用于实现这些装置之间的连接通信。处理器1601用于执行存储器1602中存储的可执行模块，例如计算机程序。存储器1602可能包含高速随机存取存储器(RAM：Random Access Memory)，也可能还包括非不稳定的存储器(non-volatile memory)，例如至少一个磁盘存储器。一个或者一个以上程序存储于存储器中，且经配置以由一个或者一个以上处理器1601执行所述一个或者一个以上程序包含用于进行以下操作的指令：
检测第一终端发送的携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
根据所述中断业务信道的呼叫的指示确定中断呼叫的业务信道；
向所述第一终端发送数据握手响应，所述数据握手响应包括数据握手响应类型以及跳转信道指示；所述跳转信道指示用于指示所述第一终端跳转至所述中转台指定的业务信道，所述指定的业务信道与确定中断呼叫的业务信道相同；
在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示，用于指示停留在所述确定中断呼叫的业务信道上的第二终端中断呼叫、释放所述业务信道的资源。
在一些实施方式中，处理器1601具体用于执行所述一个或者一个以上程序包含用于进行以下操作的指令：
当所述中断业务信道的呼叫的指示中的值不为零时，根据所述中断业务信道的呼叫的指示中的值确定中断呼叫的业务信道；
当所述中断业务信道的呼叫的指示中的值为零且根据所述数据握手请求中携带的目的地址信息确定存在与所述目的地址信息对应的中转呼叫时，将所述中转呼叫对应的业务信道确定为中断呼叫的业务信道；
当所述中断业务信道的呼叫的指示中的值为零且根据所述数据握手请求中携带的目的地址信息确定不存在与所述目的地址信息对应的中转呼叫时，按照预设的呼叫优先级将优先级低的呼叫对应的业务信道确定为中断呼叫的业务信道。
在一些实施方式中，处理器1601具体用于执行所述一个或者一个以上程序包含用于进行以下操作的指令：
当确定所述中断呼叫的业务信道的相邻信道广播的是数据帧时，将所述数据帧的同步图样替换为所述中断呼叫指示；
当确定所述中断呼叫的业务信道的相邻信道广播的是语音超帧时，在所述语音超帧中嵌入所述中断呼叫指示。
在一些实施方式中，处理器1601具体用于执行所述一个或者一个以上程序包含用于进行以下操作的指令：
解析所述数据握手请求，当所述数据握手请求的握手种类为携带业务的中 断请求时，为所述第一终端保持业务信道。
在一些实施方式中，处理器1601具体用于执行所述一个或者一个以上程序包含用于进行以下操作的指令：
当在确定中断呼叫的业务信道上检测到所述第二终端发送的语音结束帧时，控制所述业务信道从转发业务状态切换为握手保持状态，所述中转台在所述业务信道上发送握手结束帧；其中，所述语音结束帧用于表明所述第二终端中断呼叫、释放所述业务信道的资源；所述握手结束帧用于表明所述中转台在所述第二终端释放所述业务信道的资源后为所述第一终端保持业务信道。
在一些实施方式中，处理器1601具体用于执行所述一个或者一个以上程序包含用于进行以下操作的指令：
当确定携带中断信息的数据握手请求为跨站数据握手请求时，向所述携带中断信息的数据握手请求对应的源站点发送所述跨站数据握手请求；
所述向所述第一终端发送数据握手响应包括：
接收所述源站点发送的数据握手响应；
当所述数据握手响应为允许中断的响应时，向所述第一终端发送数据握手响应，所述数据握手响应的类型为允许中断；
当所述数据握手响应为拒绝中断的响应时，向所述第一终端发送数据握手响应，所述数据握手响应的类型为拒绝中断。
参见图17，为本发明又一实施例提供的数据通信的系统示意图。
一种用于数据通信的系统1700，包括第一终端1300、中转台1500、第二终端1800，其中：
所述第一终端1300用于：确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；接收中转台发送的数据握手响应；当所述数据握手响应的类型为允许中断的数据握手响应时，根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道；当确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，在所述业务信道上发起呼叫；
所述中转台1500用于：检测第一终端发送的携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；根据所述中断业务信道的呼叫的指示确定中断呼叫的业务信道；向所述第一终端发送数据握手响 应，所述数据握手响应包括数据握手响应类型以及跳转信道指示；所述跳转信道指示用于指示所述第一终端跳转至所述中转台指定的业务信道，所述指定的业务信道与所述确定中断呼叫的业务信道相同；在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示，用于指示所述停留在所述确定中断呼叫的业务信道的第二终端中断呼叫、释放所述业务信道的资源；
所述第二终端1800用于：当在发起呼叫的业务信道的相邻信道检测到所述中断呼叫指示时，发送语音结束帧以中断呼叫、释放所述业务信道的资源.
其中，第一终端、中转台的实现可以参照图13-16所示实施例的实现。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本发明的其它实施方案。本发明旨在涵盖本发明的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本发明的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本发明的真正范围和精神由下面的权利要求指出。
应当理解的是，本发明并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。本发明可以在由计算机执行的计算机可执行指令的一般上下文中描述，例如程序模块。一般地，程序模块包括执行特定任务或实现特定抽象数据类型的例程、程序、对象、组件、数据结构等等。也可以在分布式计算环境中实践本发明，在这些分 布式计算环境中，由通过通信网络而被连接的远程处理设备来执行任务。在分布式计算环境中，程序模块可以位于包括存储设备在内的本地和远程计算机存储介质中。
本说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。尤其，对于装置实施例而言，由于其基本相似于方法实施例，所以描述得比较简单，相关之处参见方法实施例的部分说明即可。以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。以上所述仅是本发明的具体实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (15)

  1. 一种数据通信的方法，其特征在于，应用于第一终端，所述方法包括：
    确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
    接收中转台发送的数据握手响应；
    当所述数据握手响应的类型为允许中断的数据握手响应时，根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道；
    当确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，在所述业务信道上发起呼叫。
  2. 根据权利要求1所述的方法，其特征在于，所述确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源包括：
    当在所述业务信道上检测到第二终端发送的语音结束帧时，确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源；其中，所述语音结束帧用于表明所述第二终端中断呼叫、释放所述业务信道的资源；或者，
    当在所述业务信道上检测到所述中转台广播的握手结束帧时，确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源；所述握手结束帧用于表明所述中转台在所述第二终端释放所述业务信道的资源后为所述第一终端保持业务信道。
  3. 根据权利要求1所述的方法，其特征在于，所述确定空闲信道包括：
    将预设的专用中断信道确定为空闲信道；或者，
    当确定接收到同站呼叫时，将接收呼叫的业务信道的同频空闲信道确定为空闲信道；或者，
    将系统广播的自由中转台的空闲信道确定为空闲信道；或者，
    当确定接收到跨站呼叫时，将接收所述跨站呼叫的信道确定为空闲信道。
  4. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    当在发起呼叫的业务信道的相邻信道检测到中断呼叫指示时，发送语音结束帧以中断呼叫、释放所述业务信道的资源。
  5. 一种数据通信的方法，其特征在于，应用于中转台，所述方法包括：
    检测第一终端发送的携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
    根据所述中断业务信道的呼叫的指示确定中断呼叫的业务信道；
    向所述第一终端发送数据握手响应，所述数据握手响应包括数据握手响应类型以及跳转信道指示；所述跳转信道指示用于指示所述第一终端跳转至所述中转台指定的业务信道，所述指定的业务信道与所述确定中断呼叫的业务信道相同；
    在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示，用于指示停留在所述确定中断呼叫的业务信道上的第二终端中断呼叫、释放所述业务信道的资源。
  6. 根据权利要求5所述的方法，其特征在于，所述根据所述中断业务信道的呼叫的指示确定中断呼叫的业务信道包括：
    当所述中断业务信道的呼叫的指示中的值不为零时，根据所述中断业务信道的呼叫的指示中的值确定中断呼叫的业务信道；
    当所述中断业务信道的呼叫的指示中的值为零且根据所述数据握手请求中携带的目的地址信息确定存在与所述目的地址信息对应的中转呼叫时，将所述中转呼叫对应的业务信道确定为中断呼叫的业务信道；
    当所述中断业务信道的呼叫的指示中的值为零且根据所述数据握手请求中携带的目的地址信息确定不存在与所述目的地址信息对应的中转呼叫时，按照预设的呼叫优先级将优先级低的呼叫对应的业务信道确定为中断呼叫的业务信道。
  7. 根据权利要求5所述的方法，其特征在于，所述在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示包括：
    当确定所述中断的业务信道的相邻信道广播的是数据帧时，将所述数据帧的同步图样替换为所述中断呼叫指示；
    当确定所述中断的业务信道的相邻信道广播的是语音超帧时，在所述语音超帧中嵌入所述中断呼叫指示。
  8. 根据权利要求5所述的方法，其特征在于，所述数据握手请求还包括握手种类，所述方法还包括：
    当所述数据握手请求的握手种类为携带业务的中断请求时，为所述第一终 端保持业务信道。
  9. 根据权利要求8所述的方法，其特征在于，所述为所述第一终端保持业务信道包括：
    当在确定中断呼叫的业务信道上检测到所述第二终端发送的语音结束帧时，控制所述业务信道从转发业务状态切换为握手保持状态，所述中转台在所述业务信道上发送握手结束帧；其中，所述语音结束帧用于表明所述第二终端中断呼叫、释放所述业务信道的资源；所述握手结束帧用于表明所述中转台在所述第二终端释放所述业务信道的资源后为所述第一终端保持业务信道。
  10. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    当确定携带中断信息的数据握手请求为跨站数据握手请求时，向所述携带中断信息的数据握手请求对应的源站点发送所述跨站数据握手请求；
    所述向所述第一终端发送数据握手响应包括：
    接收所述源站点发送的数据握手响应；
    当所述数据握手响应为允许中断的响应时，向所述第一终端发送数据握手响应，所述数据握手响应的类型为允许中断；
    当所述数据握手响应为拒绝中断的响应时，向所述第一终端发送数据握手响应，所述数据握手响应的类型为拒绝中断。
  11. 一种数据通信的装置，其特征在于，所述装置包括：
    发送单元，用于确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
    接收单元，用于接收中转台发送的数据握手响应；
    跳转单元，用于当所述数据握手响应的类型为允许中断的数据握手响应时，根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道；
    呼叫单元，用于当确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，在所述业务信道上发起呼叫。
  12. 一种数据通信的装置，其特征在于，所述装置包括：
    检测单元，用于检测第一终端发送的携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
    确定单元，用于根据所述中断业务信道的呼叫的指示确定中断呼叫的业务 信道；
    第一发送单元，用于向所述第一终端发送数据握手响应，所述数据握手响应包括数据握手响应类型以及跳转信道指示；所述跳转信道指示用于指示所述第一终端跳转至所述中转台指定的业务信道，所述指定的业务信道与所述确定中断呼叫的业务信道相同；
    第二发送单元，用于在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示，用于指示所述停留在所述确定中断呼叫的业务信道的第二终端中断呼叫、释放所述业务信道的资源。
  13. 一种用于数据通信的装置，其特征在于，包括有存储器，以及一个或者一个以上的程序，其中一个或者一个以上程序存储于存储器中，且经配置以由一个或者一个以上处理器执行所述一个或者一个以上程序包含用于进行以下操作的指令：
    确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
    接收中转台发送的数据握手响应；
    当所述数据握手响应的类型为允许中断的数据握手响应时，根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道；
    当确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，在所述业务信道上发起呼叫。
  14. 一种用于数据通信的装置，其特征在于，包括有存储器，以及一个或者一个以上的程序，其中一个或者一个以上程序存储于存储器中，且经配置以由一个或者一个以上处理器执行所述一个或者一个以上程序包含用于进行以下操作的指令：
    检测第一终端发送的携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；
    根据所述中断业务信道的呼叫的指示确定中断呼叫的业务信道；
    向所述第一终端发送数据握手响应，所述数据握手响应包括数据握手响应类型以及跳转信道指示；所述跳转信道指示用于指示所述第一终端跳转至所述中转台指定的业务信道，所述指定的业务信道与所述确定中断呼叫的业务信道相同；
    在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示，用于指示所述停留在所述确定中断呼叫的业务信道的第二终端中断呼叫、释放所述业务信道的资源。
  15. 一种用于数据通信的系统，其特征在于，包括第一终端、中转台、第二终端，其中：
    所述第一终端用于：确定空闲信道，在所述空闲信道上发送携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；接收中转台发送的数据握手响应；当所述数据握手响应的类型为允许中断的数据握手响应时，根据所述数据握手响应包含的跳转信道指示跳转至所述中转台指定的业务信道；当确定占用所述业务信道进行呼叫的第二终端中断呼叫、释放所述业务信道的资源时，在所述业务信道上发起呼叫；
    所述中转台用于：检测第一终端发送的携带中断信息的数据握手请求；所述中断信息至少包括中断业务信道的呼叫的指示；根据所述中断业务信道的呼叫的指示确定中断呼叫的业务信道；向所述第一终端发送数据握手响应，所述数据握手响应包括数据握手响应类型以及跳转信道指示；所述跳转信道指示用于指示所述第一终端跳转至所述中转台指定的业务信道，所述指定的业务信道与所述确定中断呼叫的业务信道相同；在所述确定中断呼叫的业务信道的相邻信道嵌入中断呼叫指示，用于指示所述停留在所述确定中断呼叫的业务信道的第二终端中断呼叫、释放所述业务信道的资源；
    所述第二终端用于：当在发起呼叫的业务信道的相邻信道检测到所述中断呼叫指示时，发送语音结束帧以中断呼叫、释放所述业务信道的资源。
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