CN104205987A

CN104205987A - Compatible channel for efficient coexistence of voice and data traffic

Info

Publication number: CN104205987A
Application number: CN201180054146.9A
Authority: CN
Inventors: 戴维·J·蔡特-莱亚
Original assignee: Motorola Solutions Inc
Current assignee: Motorola Solutions Inc
Priority date: 2010-11-09
Filing date: 2011-10-24
Publication date: 2014-12-10
Anticipated expiration: 2031-10-24
Also published as: GB2485355B; GB2485355A; CN104205987B; EP2638765A1; WO2012064495A1; GB201018935D0

Abstract

Speech and data packets are communicated during a timeslot of a quasi-circuit mode channel of a data physical channel. The timeslot may contain multiple calls, allowing simultaneous call monitoring. Additional bandwidth may provide end-to-end encryption synchronization, signaling, or data and may or may not be intended for receivers involved in any of the calls. A header at the start of the timeslot identifies the timeslot as belonging to the channel, as being compatible with timeslots on a data channel and contains indicators to indicate information in the timeslot is intended for a device not taking in part in any call in the timeslot. Each call also contains a unique header that indicates call information for the call including whether data is contained in the timeslot. Uplink and downlink channels are allocated separately. When a call or speech item is terminated, the data physical channel is monitored for follow-on call-related signalling.

Description

For the compatible channel effectively coexisting of voice and data business

Technical field

The present invention relates to communication means, and particularly, relate to the method that speech frame is provided in accurate circuit-mode channel.

Background technology

The mobile radio communications system of for example cell phone or private mobile radio communicaltions system provides Radio Communications Link via infrastructure between mobile radio station (being called as user).This infrastructure comprises fixation means, such as one or more base stations (BS), controller etc.Mobile communication system operates according to a set of industrial standard or agreement conventionally.The example of this standard is terrestrial trunked radio (TETRA) standard of ETSI (ETSI) definition.The system operating according to TETRA standard is called as TETRA system.TETRA system mainly for such as provide emergency services those professional wireless users use and design.

TETRA system is used time division multiple access (TDMA) operating protocol, wherein, in continuous timing architecture, carry out synchronous to communication.This timing architecture comprises time slot, frame and multiframe.4 time slots form frame, and 18 frames form multiframe.According to the type of the signaling that will send, communication can be positioned on dissimilar physical channel.For example, controlling, physical channel (being designated hereinafter simply as control channel) is upper to be sent for system synchronization and the control signal of control and the transmission of user grouping mode data, and on business physical channel, sending voice and user's circuit-mode data, the channel that wherein comprises voice is called as voice physical channel (being designated hereinafter simply as voice channel).The control channel distributing for the transmission of user grouping mode data is called as data channel below.The time slot that these channel occupancies are different.Term " data " refers to the grouping that comprises image, message and other data as used herein, instead of refers to the grouping that comprises audio frequency (, voice/sound).

For audio communication, and provide limited slow data communication according to the TETRA system (TETRA1) of existing standard operation.Developing a kind of new second generation TETRA standard (TETRA2).When for example provide for database access or image transmitting instead of audio communication high-speed communication time, use these standards.A kind of form of TETRA2 standard is called as TETRA and strengthens data, services (TEDS) standard.TETRA1 provides even interval at the RF of 25kHz interchannel.TEDS provides according to the desired data rates that uses quadrature amplitude modulation (QAM) the multiple different channel spacing that can select in 25KHz, 50KHz, 100KHz or 150kHz.TETRA1 system and TETRA2 system can be shared common frequency spectrum---for example, TETRA1 channel has the channel width of 25kHz channel and channel center frequency in 380.100MHz, and TEDS channel has the channel width of 100kHz and channel center frequency in 380.1625MHz.Owing to supporting higher modulation rate, so TEDS can be for providing the coverage of enhancing with the user of the similar number of TETRA1, and can provide the capacity of enhancing, call out because can hold more substantial (voice).

In TETRA system, special expectation can provide sound and grouped data in calling out time simultaneously.Conventionally, the physical channel in TETRA1 system is the frequency that comprises logic channel, in this logic channel, distributes conventional time slot repeat pattern (that is, having the time slot of even delay therebetween), to be formed on the circuit of voice-bearer on physical channel or data call.These logic channels are called as circuit-mode channel.An audio call takies 1 time slot (1:4TDMA pattern) of every frame.Data call (comprise data but do not comprise acoustic information) can merge time slot, and adopts 1,2,3 or 4 time slots for wider bandwidth.The independent supported data channel of TETRA1 and multislot packet data channel, this allows by carrying the packet from multiple users by suitable agreement.TEDS provides the channel architecture identical with Packet Data Channel, but as mentioned above, uses different modulation schemes and bandwidth to be provided for the different throughput capabilities of supported data for different channels.But current do not have system that sound and grouped data can be provided simultaneously.

Particularly, the physical separation of the voice-and-data channel in TETRA1 system efficiency aspect carrying data is low.Although for voice have retained circuit-mode channel, even if this channel idle can not be carried the data that are used for any user outside distributed calling on this channel.In addition, divide the channel that is used in transfer of data before can being assigned to audio call, to be disengaged distribution, this is consuming time and has caused poor efficiency.For example, although specific T ETRA2 embodiment can allow in the packet on data channel voice-bearer (, ip voice), but because each high layer packets agreement need to have its oneself the header that wherein includes customizing messages, the multiple bits that distribute for high layer packets agreement cause the method relatively inefficient.In addition, on data channel any this mechanism of voice-bearer grouping still need by Packet Data Channel resource continually assignment to the device of calling out, owing to once only a limited number of access chance can being distributed to transfer of data, therefore also bring poor efficiency.

Existing TETRA scheme can be carried an audio call by every time slot, wherein, transmits 2 frames of audio frequency in each time slot.The more bits of every time slot that particularly use higher modulation rate at channel and can support to use than an audio call, expect the audio call number that carrying increases, more effectively to utilize particular physical channel.Also expect to retain and the compatibility of data channel and the ability (sound and grouped data are provided) that makes voice-and-data mix in channel, instead of to the independent channel of dissimilar information distribution.

Brief description of the drawings

At each of accompanying drawing independently in view, identical Reference numeral represents element similar in identical or function, accompanying drawing with together with detailed description below, be merged in specification and form the part of specification, and for further illustrating the embodiment of concept and for explaining the various principle and advantages of those embodiment.

Fig. 1 illustrates the embodiment of communication system.

Fig. 2 illustrates the internal frame diagram of the embodiment of communication equipment.

Fig. 3 shows an embodiment of the timing diagram of accurate circuit-mode channel.

Fig. 4 shows an embodiment of the flow chart of BTS.

Fig. 5 shows an embodiment of the flow chart of mobile radio station.

Suitably represent apparatus and method assembly by conventional symbol in the accompanying drawings, accompanying drawing only shows those specific detail relevant with understanding illustrated embodiment, not make the disclosure and will be that significantly those details are chaotic mutually for the those ordinarily skilled in the art of benefiting from benefit described here.Therefore can there are all other elements as known for those skilled in the art.

Embodiment

Describe communication means and communication equipment and communication system, wherein, during the time slot of accurate circuit-mode channel, transmitted voice and/or data.Accurate circuit-mode channel is based upon on the physical channel of bearer data transmission, and therefore can be logical control channel (because conventionally can in control channel type, carry data).Accurate circuit-mode channel uses conventional time slot repetition rate, but lower floor's header (such as mac header) is as the prefix of each time slot, this lower floor's header adopts the form that the equivalent header of the grouping using with the data on data channel is identical, and can be only header, and therefore can with the transmission compatibility of other grouped datas on data channel.Packets of voice in time slot is not encapsulated in packet, thereby has eliminated above-mentioned poor efficiency.Time slot can comprise multiple speech frames, and can comprise multiple callings.Receiver such as mobile radio station can monitor these callings simultaneously.Data in time slot may or may be not intended to arrive related communication equipment in any one of the calling of this time slot.Except data (or substituting as data), additional bandwidth (exceeding in time slot only for transmitting the bandwidth of voice) can be for providing end to end encryption synchronisation or signaling.In addition, signaling can be relevant to other callings in data physical channel, and be addressed to the communication equipment that does not participate in any calling in this time slot.

Lower floor's header of time slot beginning comprises various designators, comprises to indicate the information that is intended to arrive the communication equipment that does not participate in any calling in time slot in this time slot.This header can also comprise the information about the state of the uplink time slot being associated with downlink time slots, and then this header can be used by receiver.Each calling can also comprise unique header, and this uniqueness header is indicated the call information of this calling, whether is included in time slot such as the data for receiver.Uplink channel between transmitter and receiver and downlink channel also can be distributed separately, make the time slot corresponding to different call distributions.To participate in ongoing calling if can not participate in the communication equipment of accurate circuit-mode call, on circuit-mode channel, set up another calling, and suitably keep ongoing calling, or ongoing calling is assigned to circuit-mode channel again.Similarly, leave the calling on traditional circuit mode channel if can not participate in the communication equipment of accurate circuit-mode call, and call out on every other communication equipment can participate in accurate circuit-mode call, calling is assigned to again to accurate circuit-mode channel.

Fig. 1 illustrates the general networking 100 that comprises infrastructure 110.The element that has many distributions in infrastructure 110, some parts is closer to each other, and other are arranged to geographically away from each other.Such element comprises base station 120, only shows one of them for convenient.One or more subscribers 130 in the overlay area of being served by base station 120, each base station 120 is provided to the connection of other equipment that are arranged in same coverage area or are arranged in distinct coverage region by infrastructure 110.Subscriber 130 can be for example for example cell phone, personal digital assistant or the mobile radio station that used by ambulance paramedic.

There is shown (for example, base station 120 or subscriber 140) embodiment in communication equipment at the frame of Fig. 2.Except other assemblies, communication equipment 200 can comprise processor 202, comprise the transceiver 204 of transmitter circuitry 206 and receiver circuit 208, antenna 222, I/O equipment 212, program storage 214, buffer memory 216, one or more communication interface 218 and portable storage tank 220.Transmitter circuitry 206 and receiver circuit 208 allow communication equipment according to expecting as transmitter (transmission information) or receiver (reception information).Preferably integrated unit of communication equipment 200, and at least can comprise all elements that Fig. 2 describes and make communication equipment 200 carry out needed any other element of its electric function.Electronic component connects by bus 224.

Processor 202 comprises one or more microprocessors, microcontroller, DSP, state machine, logical circuit or comes any other equipment or multiple equipment of process information based on operation or programming instruction.Such operation or programming instruction are stored in program storage 214, and can comprise instruction (such as estimation to received signal and correction and the encrypt/decrypt carried out by processor 202) and with the information (such as modulation, tranmitting frequency or signal amplitude) that transmits signal correction.Program storage 214 can be IC memory chip, comprises any type of random-access memory (ram) and/or read-only memory (ROM), floppy disk, CD (CD) ROM, hard disk, digital video disc (DVD), flash memory card or any other medium for storing digital information.Those of ordinary skill in the art will recognize, in the time that one or more functions of processor 202 are carried out by state machine or logical circuit, the memory 214 that comprises corresponding operating instruction can be embedded in state machine or logical circuit.Describe the operation of the remainder execution of processor 202 and communication equipment 200 below in detail.

Transmitter circuitry 206 and receiver circuit 208 can transmit respectively and receiving communication signal communication equipment 200.To this, transmitter circuitry 206 and receiver circuit 208 comprise the proper circuit that can carry out wireless transmission.The realization of transmitter circuitry 206 and receiver circuit 208 is depended on communication equipment 200 and the realization of the equipment that communicates with it.For example, according to known technology, transmitter circuitry 206 and receiver circuit 208 may be implemented as a part for communication equipment hardware and software architecture.Person of skill in the art will appreciate that, the major part of transmitter circuitry 206 or receiver circuit 208 instead of repertoire can be realized in processor (such as processor 202).But processor 202, transmitter circuitry 206 and receiver circuit 208 are separated artificially at this, understand better promoting.Buffer memory 206 can be any type of volatile memory, such as RAM, and for the information of interim storing received or transmission.

Communication equipment 200 can also comprise multiple I/O equipment, such as the keyboard with alphanumeric key; Display (for example, LED, OLED), shows the information about communication equipment or the communication relevant to communication equipment; Soft key and/or hardkey; Touch-screen; Joystick; Microphone and loud speaker.

As above, expect to provide more effectively channel to use, realize monitoring time multiple alternative sounds transmission (independently equipment-device transmission or multicast device are to multiple device transmission), and realize and in same logical channel, transmit voice-and-data.Multiple or whole time slots of the accurate circuit-mode channel occupancy of logic physical channel, and use the modulation scheme being applicable to and high power capacity is provided, for example, TEDS channel.On physical channel, loaded packet data and signaling be (in a conventional manner, its comprise with format and the error correction of the similar mode of TETRA2 Packet Data Channel), and grouped data and signaling are used legacy protocol, such as media interviews control (MAC), logic link control (LLC), mobile link entity (MLE) and sub-network correlated aggregation agreement (SNDCP) (when needed).The above-mentioned logic channel that is defined as conventional slotted mode can be preserved for control activity.Base station can be fixed on modulation or the data rate of the all-calls carrying on physical channel, or can by mechanism known in the art dynamically or adaptively modifying they.Modulation and the calling that can carry on physical channel of data rate adjustment start or call out during generation.

Fig. 3 has described the embodiment of the transmission during the exemplary time period.Show multiple descending chain circuit frames (transmission of (multiple) from base station to mobile radio station) and uplink frame (transmission from a mobile radio station to base station).Each frame comprises 4 time slots.Although the each time slot on down link can comprise various audio calls and/or data, in order conveniently only to show such time slot.Adjacent time-slots can be used different modulation schemes, and therefore has different capabilities.

In the time that base station point is used in the bandwidth of one or more callings in time slot, the larger bandwidth of bandwidth may distribution ratio voice needing separately.Additional bandwidth can be for transmitting terminal opposite end encryption synchronisation, and end to end security is synchronously stolen frame (stolen frame) carried (, speech data deleted and encrypted synchronous replacement) usually used as what replace voice.If alternatively send end-to-end encryption synchronisation in extra bandwidth, can in the situation that not stealing any voice messaging, carry this End to End Encryption so synchronous, therefore improve transmission quality.The data volume sending in calling out increases, and this can transmit with signal by lower floor's header or unique header of calling out.

Because base station can provide the bandwidth larger bandwidth more required than audio call (multiple) in time slot, therefore at least some in the remainder of time slot can be for sending data.Although mainly use time slot to send data to allow mobile radio station to receive voice-and-data simultaneously to mobile radio station in calling, data can be sent to other mobile radio stations that do not participate in calling.In this case, for example, in lower floor's (, the MAC layer) header as the time slot prefix beginning of time slot () bit or mark are set.This bit/mark is to the downlink communication equipment notice such as the mobile radio station of scanning time slot: in this time slot, also comprise for being assigned to the data as the mobile radio station outside those mobile radio stations of this time slot of the part of accurate circuit-mode channel.Term lower floor refers to layer 1 or the layer 2 in osi model.

Similarly, base station can also be by least some in the remainder of time slot for being addressed to the signaling that does not use this time slot to participate in the mobile radio station of calling out.Such signaling can be relevant to other callings on physical channel.In this case, in the mac header that can start at time slot, use signaling designator, comprise with instruction time slot the signaling that is addressed to the mobile radio station outside those mobile radio stations called out that carry in time slot, and therefore those mobile radio stations of calling out know that they have been assigned to the time slot as a part for accurate circuit-mode channel.

In addition, in the time comprising multiple calling in identical time slot, each calling can be the air interface that uses identical or different secret key encryption.If call identifier is used for identifying each calling, can be used as key amendment symbol, it is different making encryption key stream for each calling.This so can contribute to the attack of anti-locking system outside to downlink information.

If mobile radio station is desirably in accurate circuit-mode channel and sends data outward, base station can allow mobile radio station to manage on any free timeslot of physical channel of distributing to data herein.The traditional circuit-mode channel allocation that only accesses the resource in this distribution from mobile radio station is wherein different, and this also allows to carry out voice-and-data operation outward at the channel distributing simultaneously.When mobile radio station is participating in the calling on accurate circuit-mode channel, base station is for example according to being stored in the configuration data in system database, or some ability information of exchange while registration according to mobile radio station, or by some other modes, can divide the time slot that is used in transfer of data to mobile radio station.The ability that mobile radio station sent or received data in particular time-slot can depend on the physical parameter of mobile radio station, such as existence or other parameters of switching spent time or duplexer filter between receiving mode and emission mode.

In Fig. 3, accurate circuit-mode channel is shown in otherwise carries the logic channel of setting up on the physical channel of data, and owing to can carry data on control channel, can in logical control channel, set up accurate circuit-mode logic channel.In accurate circuit-mode channel, the sequenced mode of voice and/or data is transmitted, but can have any predetermined periodicity, and is not limited to the identical time slot using in every frame.In the time having distributed channel and mobile radio station to be assigned to this channel, in to the distribution of channel, periodically and be instructed to mobile radio station for the absolute standard of time slot, wherein benchmark is indicated frame or the time-gap number of this time slot.Benchmark can be for being used for the first time slot of this channel, or for distributing to frame subsequently and the time slot of this channel.Distribute to each time slot of channel taking at least one header (such as mac header) from standard TETRA protocol stack as preorder, this allows this time slot still can only be used physical channel to be used for data and the current mobile radio station that is not assigned to accurate circuit-mode channel is identified.Accurate circuit-mode channel and preferred circuit switched data channel are similar, but are not only the voice in cover data frame.In the specific embodiment illustrating, every 6 time slots comprise voice and data grouping.Can find out, the different time-gap (if existence) in consecutive frame comprises voice and data grouping.In other words, from in circuit-mode call, distribute the legacy system of the identical time slot in each frame different to same sound or transfer of data, the time slot of distributing to sound/packet in the consecutive frame of accurate circuit-mode call can be different, and particular frame can not be included in transmission collection in any time slot.For example, in Fig. 3, because every 6 time slots comprise sound/transfer of data, every 3 patterns that time slot duplicates: the first, the second time slot of the frame such as the 4th, the 7th comprises these transmission, the second, the 4th time slot of the frame such as the 5th, the 8th comprises these transmission, and the frame such as the 3rd, the 6th, the 9th does not comprise sound/transfer of data.

See, as long as initial frame, time slot and periodicity are all delivered to mobile radio station, the periodicity of accurate circuit-mode channel is just unrestricted isolatedly.But if use other accurate circuit-mode channel or circuit-mode channels, only specific period is available.For example, if the second accurate circuit-mode channel is added to the accurate circuit-mode channel shown in Fig. 3, periodically can be identical (with the periodicity that the first accurate circuit-mode channel uses, every 6 time slots) or the periodic multiple that uses of the first accurate circuit-mode channel is (for example, every 12 time slots), but start with the time slot different with the time slot (, the second time slot and the 4th time slot) of the first accurate circuit-mode channel use.Alternatively, the second accurate circuit-mode channel can have and only uses any periodicity of the first accurate circuit-mode channel from untapped time slot (, the first time slot and the 3rd time slot).

The periodicity of accurate circuit-mode channel can comprise or ignore the time slot in the specific signaling frame being included in multiframe.For example, if the signaling frame of multiframe (frame 18) is excluded, a time slot in 6 repeat patterns that start with the time slot 1 of the tdma frame 1 of multiframe 1 will distribute time slot 3, the time slot 1 in frame 4 etc. in frame 2 until the time slot 3 in frame 17.But as substitute (if 4 time slots of frame 18 are counted, the distributing than late 6 time slots of the time slot 3 in frame 17) of distributing time slot 1 in the frame 1 of multiframe 2, the next time slot of distribution is the time slot 1 in the frame 2 of multiframe 2.

As a part for call setup instruction, base station provides voice packing instruction to the mobile radio station that participates in this calling.The instruction of voice packing pattern is bundled to the number of a speech frame in time slot.The number of this speech frame can be the speech frame of a speech frame to any predetermined quantity, for example 2,3,4 or 8.Can be during channel assignment clear and definite specified speech packing pattern, and can in the header information in the time slot of specifying, repeat this voice packing pattern, or can carry out impliedly specified speech packing pattern by channel assignment by reference to slot cycle.For example, use standard TETRA vocoder (vocoder), every 4 time slots of MS transmit 2 speech frames (therefore, Mean Speed is 1 speech frame of every 2 time slots), and therefore the periodic distribution in 1 time slot in 6 can imply that MS sends 3 speech frames in each time slot.Other vocoders can have different transfer rates, but this can imply according to the periodicity of the mark of vocoder types and accurate circuit-mode channel.A large amount of speech frames in each time slot allow the time slot repeat pattern of growing, and therefore mobile radio station not too uses physical channel, but this also may be owing to increasing the audio frequency delay of calling from the needs of the number of the audio frame of vocoder for accumulation in real time before reproducing.

Voice and/or data in each downlink time slots of accurate circuit-mode call, also there is dissimilar header.Time slot comprises overall header in this time slot beginning, for example, and mac header.This header makes mobile radio station this time slot can be identified to a part for the circuit-mode channel that be as the criterion, and guarantee and the compatibility of other packet data users of channel, reason is, the mobile radio station identification time slot that this header allows only to need packet data service or be not provided as support voice channel allocation on data channel is assigned to accurate circuit-mode channel and therefore ignores the content of this time slot, or allows this mobile radio station that this time slot is identified as to the data that comprise some forms to its addressing not and therefore ignore the content of time slot based on these reasons.In another embodiment, mac header can be assigned to the each independent calling in accurate circuit-mode channel, to allow mobile radio station to search for each protocol Data Unit (PDU) to find the information of other types.May not need to have mac header from the ul transmissions of mobile radio station, reason is that the use of up link is by base station assigned, and therefore the mobile radio station transmitting and the calling that wherein mobile radio station is transmitting are known in base station.But, in the time that mac header assistant base station is confirmed up-link information, can apply mac header, or mac header goes for detecting the conflict that another user accidentally transmits on same channel.

Mac header (or each header being associated with speech frame below) can comprise status indicator, the state of this status indicator uplink time slot that instruction is associated with downlink time slots in the time there is the uplink time slot being associated with downlink time slots.This can indicate the uplink time slot being associated is idle or busy.Idle instruction by allow mobile radio station on down link, in receipt of call, send random access information and/data, this for example, is favourable in the time that mobile radio station wants to carry out transfer of data (sending AVL data).The uplink time slot being associated with downlink time slots can be followed unalterable rules, such as in absolute time than late two time slots of downlink time slots, or there is its position of determining by Cell Broadcast CB or calling out the position starting.

In time slot, after mac header, be speech frame.Speech frame can comprise for each header of each calling and the voice of calling.Base station can by one call out or one call out and assign to same channel above.If time slot will use high rate modulation scheme,,, compared with supporting the needed capacity of individual call, may there is larger capacity in for example 16QAM or 64QAM in accurate circuit-mode channel.If there are multiple callings in identical time slot, each calling comprises unique header, the instruction of this uniqueness header is for the call information of this calling, and this call information can comprise following information: the number of the speech frame of carrying in type of call, time slot, whether have replace speech frame any steal frame, sequence number information in the time there is multiple speech frame, expectation recipient, call out the type of codec encrypted and that the voice in calling out are encoded whether and be used to indicate the data indicator that whether has data.

Call out the one or more speech frames that can also identify the content that is designated as " first " and " second " half time slot in header, allow to transmit same voice frame from TETRA1 base station with compatibility mode, observe for transmitting the TETRA1 rule of frame steathily.One or more in header can comprise length indicator, when this length indicator carries multiple calling in identical time slot, allow mobile radio station to calculate according to last speech frame after the beginning of a speech frame.For the capacity in call release header, can consult the mark of codec by the call establishment stage between mobile radio station and base station, call out header and this information is not placed in.Therefore, mobile radio station can be decoded to calling out header, and searches for and self call out relevant information by searching relevant identifier.If expected, mobile radio station can scan the calling that this mobile radio station is its member, or ignores the calling that this mobile radio station is not its member.

As show, in time slot, can only arrange the packet (calling out 1) of a set, this permission is indicated this only calling that comprises data with individual data designator in calling.Except non-mobile station specified data will exist for it, otherwise in the time that mobile radio station is not expected to search for these data, the power of mobile radio station has been preserved in the use of data indicator.Can comprise a data indicator for whole time slot, and this data indicator can be contained in mac header, or data indicator can be included in the calling header of the each calling in time slot.Data can be placed in any point after data indicator.In another embodiment, the Part I of time slot is for having the calling (if existence) of related data.Therefore, in this embodiment, the transfer voice in accurate circuit-mode channel can be adjusted position (and can eliminate the use to data indicator when the transfer voice in the Part I of time slot when each header identification) according to frame.In other embodiments, can transmit multiple data acquisition systems, in this case, data indicator can comprise multiple bits, and the plurality of bit is the position of the data for each calling in indicator data field for example.Alternatively, each data acquisition system can comprise the header of indicating associated call.

In addition, the up link of corresponding time slot (as show, it has been delayed two time slots (but other configurations are possible) to allow the MS without duplexing emittor/receiver to carry out duplex calls according to the version 3 of TETRA standard or version more early) can be assigned to different callings.This different calling can be used or can not use accurate circuit-mode channel, and if do not use, it can be according to another grouped data time slot of the General Mechanism assignment of Packet Data Channel (or control channel of loaded packet data).For example, mobile radio station can be assigned with the subchannel bandwidth in the first half time slots or the second half time slots or whole physical channel: this rear one example of distributing can be that whole physical channel takies 50kHz, and mobile radio station can only be assigned to upper 25kHz or the lower 25kHz of this channel.Base station can send uplink indicator in corresponding downlink time slots, to determine whether there are data in uplink time slot.If the uplink time slot free time, mobile radio station can transmit data, for example, and to help the mobile radio station in calling to send random access data.Therefore, once the first time slot and the periodicity (and this is sent to mobile radio station) of accurate circuit-mode channel have been set up in base station, so because particular time-slot exists, so mobile radio station just can be avoided from base station requests for sending the particular time-slot of data.

As above, if mobile radio station is desirably in, accurate circuit-mode channel is outer to be sent or receives data, and base station can to mobile radio station assignment, it knows the time slot in the limit of power in mobile radio station.For example, if shown in Fig. 3, mobile radio station participates in the calling in frame 1 time slot 2 and frame 2 time slots 4, and mobile radio station can not prevent mobile radio station receiving data frames 2 time slots 2 and 3 in the situation that frame 1 time slot 2 and frame 2 time slots 4 transmit in up link.Similarly, mobile radio station can not prevent receipt of call, transmitting data at frame 1 time slot 3 and 4 in up link in frame 1 time slot 2 that mobile radio station is identifying and frame 2 time slots 4.

Fig. 4 has described an embodiment of the block diagram of the method for operation of base station.In the time that mobile radio station is expected to call out, at step 402 place, base station receives the request about this calling from mobile radio station.Mobile radio station can comprise information, such as the channel type that will use, whether have in addition the data that will transmit with and the maximum data rate (for example, the intensity based on base station signal) that can maintain.In the time of mobile radio station request call, can retransmit at least some in this information, or at least some in this information can be stored in the base station for specific mobile radio station, and for from this mobile radio station for the calling of each new calling or for the new calling in scheduled time amount, make base station confirm that maximum data rate/BS signal strength signal intensity does not obviously change.

At step 404 place, base station determines whether to exist the existing accurate circuit-mode channel using, and if exist, at step 406 place, determines whether mobile radio station has been supplied audio communication on one or more existing channels.If mobile radio station receiving one or more other call out, new calling can be managed in base station, make new calling with in same channel other call out together be provided.Even if user is monitoring another and calling out, this also allows mobile radio station to scan an all-calls in time slot simultaneously.At step 408 place.Base station determines whether channel can support mobile radio station demand (for example, data rate), and whether remaining time slots in definite time slot can be used.In the time that channel can be supported mobile radio station, at step 410 place, base station determines that what time slot in time slot is available.If there are one or more channels, but the current data that do not receive from base station on channel of mobile radio station, or channel does not meet the demand of mobile radio station or not for the space of mobile radio station, at step 412 place, the new accurate circuit-mode channel clashing with any existing channel is determined not in base station.No matter whether there is the existing accurate circuit-mode or the circuit-mode channel that are using, no matter and whether mobile radio station can use in existing accurate circuit-mode channel in the time existing, in step 414, base station assigns is carried the time slot in channel and the time slot of these voice, and then, at step 416 place, transmit call setup information to mobile radio station.Once base station assigns accurate circuit-mode channel, channel just keeps permitting until called out.This has eliminated the other channel allocation to the communication unit signal transmission that participates in calling out with conventional interval, and this other signal is distributed in pure group mode calling to be needed.

Reiterate, accurate circuit-mode channel has conventional slotted mode, and overlaps on the physical channel of carrying data.Time slot repeat pattern can adopt any value, for example, and each time slot, time slot (as current TETRA uses) in a time slot in a time slot in two, three, four etc.Therefore,, in the time that the accurate circuit-mode channel distributing is transmitted to mobile radio station in base station, not only instruction is used for the time slot transmitting, and also indicates the periodicity of accurate circuit-mode channel.What base station will be to mobile radio station relaying slotted mode, when carry out and how its calling be transmitted.Similarly, for example, when calling out will be moved station (, as the member of call service group) and receive on accurate circuit-mode channel time, base station is transmitted to call out to mobile radio station and is about to start, when will starts (frame and time slot) and periodicity.Assignment is sent to physics and logic channel to the mobile radio station of calling out, with sending and receiving voice in due course.

After the original allocation of the accurate circuit-mode channel of bearing call, can also send additional channel and distribute, for example, to allow other mobile radio stations to enter after a while calling.These additional channels distribute send after a time slot as making mobile radio station add the starting point of channel, but same period.

From wherein distribute in pairs the legacy system of uplink channel and downlink channel different, can be on up link and down link assignment time slot independently, make when mobile radio station is in the time that particular time-slot transmits to base station, be used for other member's relaying audio frequency of the group for example belonging to the mobile radio station transmitting from the identical time slot of base station.But, if there is tool channel with a grain of salt but the multiple mobile radio stations that receiving instead of transmitting, this waste power system capacity.Here, distribute respectively uplink channel and downlink channel, if mobile radio station is transmitted to base station in a time slot in up link, corresponding time slot can not be assigned for transmitting to other mobile radio stations on downlink channel.In addition, different time-gap repeat pattern can be assigned up link and the down link to the same call of carrying same base.Can according to expect in assignment up link or down link only one or two.

In the time receiving voice packets in base station, step 418 place from mobile radio station, at step 420 place, unique header that base station creates or retrieval is used for this voice packets from holder.If also having determined at step 422 place from mobile radio station, base station receives data and time slot has the space of transmitting data, at step 424 place, base station is included in data in time slot, and is providing instruction to have for other mobile radio stations the designator in the data of time slot receipt of call for the header of this calling.Then,, at step 426 place, time slot is transmitted to mobile radio station in base station.At step 428 place, whether finish according to definite calling of mobile radio station transmission base station, and if finish, waits for new calling, transmits time slot on demand on accurate circuit-mode channel.Do not finish if called out, at step 430 place, base station determines whether to retransmit accurate circuit-mode channel information to mobile radio station, and retransmits or receive at step 418 place new voice packets data at step 416 place.Can often repeat the information about channel allocation, to allow mobile radio station to enter calling after calling has started, that is, and the situation entering evening.

Forward to and called out: if distributed circuit-mode channel in legacy system, some periods (being generally the suspension time of several seconds) the circuit-mode channel conventionally having completed after transmitting voice packets at mobile radio station keeps being assigned with.Support like this continuity, channel in the time switching immediately can not be lost, and avoided another mobile radio station to expect the delay producing in the time that this mobile radio station is answered, and therefore must wait for that next control channel arrives the channel looking for novelty.Use the operation of this suspension time to be called as message trunking, and mobile radio station again access control channel with continue call out time the operation that there is no suspension time be called as transmission trunking.But, because not having voice packets to be transmitted or this being occurred still to keep being assigned with without any the situation lower channel ensureing, so power system capacity is also wasted in the use of message trunking and suspension time.

System described here allows to transmit the request that starts its answer in any available transmission opportunity of mobile radio station in whole data physical channel.Any position of the free timeslot (comprising the idle space of this accurate circuit-mode channel or other accurate circuit-mode channels) that can exist these opportunitys in the up link of data physical channel.Because the increase number that makes other mobile radio stations transmit the opportunity of the request that starts its answers has improved that rapid system accesses again and for the probability of the fast channel allocation of new calling, so this allows channel to be deallocated immediately and redistribute (as accurate circuit-mode channel or the transmission of carrying ordinary groups mode data).Base station can retain across the multiple uplink time slots on whole physical channel, to assist other mobile radio station requests to continue to call out; This is some up link efficiency of possible loss in the operation of message trunking system, but have obtained down link efficiency.Similarly, on base station can be on whole physical channel any downlink transmission opportunity, transfer channel divides to be equipped with and continues or restart to call out.This has been avoided the use to suspension time and has increased power system capacity.In some scheduled times after the formerly front transmission of mobile radio station and base station or end of calling, use whole physical channel.This scheduled time may be programmed into mobile radio station or can be transmitted by base station.

Fig. 5 has described an embodiment of the block diagram of the method for operation of mobile radio station.At step 502 place, mobile radio station receives accurate circuit-mode channel call and sets up information, comprises the periodicity of start frame and time slot and accurate circuit-mode channel.At step 504 place, the time slot that mobile stations wait is distributed, mobile radio station receives this time slot at step 506 place.Read whole header and determined time slot be data channel (thering is voice packets) afterwards, mobile radio station reads the first independent call header at step 508 place.Call out header for being intended to arrive the voice packets of mobile radio station if mobile radio station has been determined at step 510 place, at step 512 place, check to determine whether to exist instruction to have the designator for the data of mobile radio station.If there is designator, at step 514 place, the data that mobile radio station storage will retrieval from the further part of time slot (and if present, position) in time slot.If the first calling is not intended to arrive mobile radio station or does not have designator, at step 516 place, mobile radio station determines whether to exist any calling that will scan.If mobile radio station determine exist more callings, at step 518 place, turn back to step 508 mobile radio station read next call out header before, mobile radio station move to next call out header.

Once the voice packets that scanned all-calls and storage/reproduction, at step 520 place, mobile radio station determines whether this time slot comprises any data that are intended to arrive this mobile radio station.If do not comprised, mobile radio station turns back to the step 504 of next time slot (supposing does not have other time slots to have the grouping that is intended to arrive mobile radio station) of waiting for accurate circuit-mode channel.If data exist,, at step 522 place, mobile radio station determines whether the packet of the first set is intended to arrive this mobile radio station (for example,, by checking datagram header or the data position in time slot), and if be, store or otherwise use these data at step 524 place.If the packet of the first set is not intended to arrive mobile radio station, or after use is intended to arrive the data of mobile radio station, at step 526 place, mobile radio station is determined the packet that whether has any more set in time slot.If there are more set, at step 528 place, mobile radio station continues the packet of next set and turns back to determine whether the packet of next set is intended to arrive the step 522 of this mobile radio station.After having scanned all packets, at step 530 place, mobile radio station, before returning to the step 504 of next time slot of waiting for accurate circuit-mode channel, is removed any designator.If there is the only packet of a set in time slot, can omit step 522,526 and 528 circulations that form, make mobile radio station only determine data in time slot be intended to arrive this mobile radio station after at step 524 place reading out data.

As mentioned above, although use ip voice (or other similar agreements) in the air interface between base station and mobile radio station because the poor efficiency of protocol overhead is not desirably in, but advantageously, the speech frame of interface bearing is aloft encapsulated in IP grouping, for by base station to fixed network or by mobile radio station to the further transmission of equipment that is connected to its FPDP, and make mobile radio station or base station receive the speech frame being encapsulated in IP, and use accurate circuit-mode channel in interface, to transmit these speech frames aloft.In other words,, in view of interface aloft does not use IP, speech frame is encapsulated in IP for fl transmission.Call setup information can be carried the information of the outer IP using of air interface, and it is relevant with the associated call identifier that air interface place is used, and base station and mobile radio station can flow by other protocol packet that this re-create outside IP or air interface.The sequence number being included in air interface frame can be for guaranteeing the continuity of external protocol.In addition, in certain embodiments, on accurate circuit-mode channel, some speech frames can be encapsulated in packet.

For the mobile radio station only relating in accurate circuit-mode channel, when speech items in calling out finishes, in one embodiment, can allow mobile radio station to keep the short period at accurate circuit-mode channel, to allow further exchange of signaling or continuation and new session side to call out.But in different embodiment, mobile radio station can leave channel immediately, continue and if call out, be assigned new channel (, using message trunking).In order to allow the fast quick-recovery of high-speed receiving signaling and calling, mobile radio station can, calling out or monitoring whole data channel for additional signaling in the period of speech items after finishing, monitor each time slot of physical channel for the signaling relevant to the recovery of calling.This comprises the content that monitors other time slots of distributing to other logics (accurate circuit-mode or circuit-mode) channel.

If the accurate circuit-mode channel on use physical channel is set up call out, all mobile radio stations can both participate in such calling.Add community if can not participate in the mobile radio station of accurate circuit-mode call, for example, if mobile radio station only can be supported in the circuit-mode call on TETRA1 channel, base station can, in the calling retaining on accurate circuit-mode channel, be set up for second of this mobile radio station and call out at traditional circuit mode channel.Alternatively, base station can assign to traditional circuit mode channel from accurate circuit-mode channel again by mobile radio station, the therefore resource in release data channel.If set up and call out and can not leave at the mobile radio station of the enterprising line operate of accurate circuit-mode channel of data channel on traditional circuit mode channel, base station can assign to accurate circuit-mode channel again by calling out, thereby discharges the resource on traditional circuit mode channel.

Although the TETRA system that uses 1:4TDMA pattern has specifically been discussed, above-described embodiment goes for other system.Such technology can provide various different frame repeat patterns; For example, iDEN system can be used various frame rate and broadcast its present mode to subscriber, and for dissimilar calling current use 3:1TDMA and 6:1TDMA.

In addition, describe voice application although the use of above alignment circuit mode channel is described, be clear that, can on such channel, carry any type of circuit-mode data, for example video.

Method and transmitter and receiver and the communication system of the communication between the transmitter and receiver in communication system are provided in various embodiments.In these embodiments, timing comprises frame, and each frame comprises time slot.During the time slot of the accurate circuit-mode channel on data channel, transmit voice and/or data from transmitter to receiver.By lower-layer protocols header, to time slot prefixing, this lower-layer protocols header allows the distribution of voice-and-data in time slot, and guarantees the compatibility that other time slots on this time slot and data channel use.This information is received by receiver, and receiver is determined various information in time slot with header.Note, each method of description has the transmitter and receiver that carrys out executive communication function with correlation method.

In various embodiments, disclosed method may be implemented as the computer program using for computer system.Such realization such as computer-readable medium (for example can be included in, disk, CD-ROM, ROM or fixed disk) tangible medium on fixing series of computation machine instruction, or via modulator-demodulator or can be sent to the series of computation machine instruction of computer system such as other interface equipments of communication adapter that are connected to network by medium.This medium can be tangible medium (for example, light or analog communications lines) or pass through the medium that wireless technology (for example, microwave, infrared ray or other transmission technologys) realizes.This series of computer instructions had realized previously all or part of function that frame of reference is described here.It will be apparent to one skilled in the art that and can write such computer instruction for the multiple programming language being used by many computer architectures or operating system.In addition, such instruction can be stored in any memory devices, in semiconductor, magnetic, light or other memory devices, and can use such as any communication technology of light, infrared ray, microwave or other transmission technologys and transmit such instruction.Expect that such computer program can be distributed as removable medium, (for example there is printing or electronic document, compression software packaging), prestrain has computer system (for example, on system ROM or fixed disk), or for example, distribute from server or BBS (Bulletin Board System) by network (, the Internet or World Wide Web (WWW)).Certainly, some embodiments of the present invention may be implemented as the two the combination of software (for example, computer program) and hardware.Other embodiment of the present invention can be completely by hardware or for example, realized by software (, computer program) completely.

Should be appreciated that, term used herein gives the typical art-recognized meanings of such term and expression with expressing to have by those skilled in the art with respect to investigation and the research of its corresponding regional, unless set forth in addition different specific implications at this.Such as the relational terms such as first and second only for an entity or action are distinguished with another entity or action, and such relation of inevitable requirement or any reality of hint between such entity or behavior or sequentially not.Term " comprises " or its any other distortion is intended to contain nonexcludability and comprises, the process, method, object or the device that make to comprise a column element not only comprise these unit, can also comprise the element of clearly not listing, or this class process, method, object or the intrinsic element of device.In the situation that there is no more restrictions, be not precluded within other identical element in process, method, object or the device that comprises this element with the unit of " one " guiding.

Person of skill in the art will appreciate that, in the case of not departing from the scope of the present invention of claims elaboration, can carry out multiple amendment, change and combination to above-described embodiment, and such amendment, change and combination are considered in the scope that falls into concept of the present invention.Therefore, specification and accompanying drawing are considered to illustrative and nonrestrictive, and all this amendments are believed to comprise within the scope of the invention.Benefit, advantage, for the solution of problem and crucial, essential or necessary feature or the element that can make any benefit, advantage or solution occur or become any one or more elements more clearly and needn't be interpreted as any or whole claims.The claim being obtained by all equivalents of the application and those claims of issuing limits the present invention uniquely.

Provide summary of the present disclosure to allow reader to determine fast the disclosed character of technology.Submitting summary to is for the ease of understanding, and summary will be not used in scope or the implication of explanation or restriction claim.In addition, in foregoing detailed description, can find out, in order to simplify disclosed object, in each embodiment by various Feature Combinations together.

Claims (according to the amendment of the 19th article of treaty)

1. the method for communicating by letter between the transmitter in communication system (100) (200) and receiver (200), wherein, timing comprises frame, each frame comprises time slot, described method comprises: during the time slot of the accurate circuit-mode channel on data channel, transmit at least one in voice or data, wherein, described accurate circuit-mode channel is the logic channel of setting up on physical packet data channel, with lower-layer protocols header to time slot prefixing, this lower-layer protocols header allows the distribution of voice-and-data in described time slot, and guarantee the compatibility that other time slots on described time slot and described data channel use.

2. method according to claim 1, wherein, described time slot comprises multiple callings.

3. method according to claim 2, also comprises:

Air interface is used same key or different key to be encrypted each calling; And

If existed, use the call identifier of the each calling of mark as key amendment symbol, making encryption key stream is different for each calling.

4. method according to claim 2, also comprises: described receiver monitors described calling simultaneously.

5. method according to claim 1, wherein, described time slot comprises the voice-and-data for receiver (200).

6. method according to claim 5, wherein, described accurate circuit-mode channel comprises multiple callings.

7. method according to claim 5, wherein, described voice are not encapsulated in packet.

8. method according to claim 1, wherein, described time slot comprises calling and the data for receiver (200), in any calling of this receiver (200) in described time slot, is not all related to.

9. method according to claim 8, wherein, the signaling designator in described lower floor header indicates described time slot to comprise data.

10. method according to claim 1, wherein, described accurate circuit-mode channel has periodically, and wherein, the identical time slot in consecutive frame is not by accurate circuit-mode channel occupancy.

11. methods according to claim 1, wherein, described accurate circuit-mode channel has periodically, and wherein, the multiple non-adjacent time slot in frame is by described accurate circuit-mode channel occupancy.

12. methods according to claim 1, wherein, described time slot comprises the additional bandwidth that exceedes in described time slot the bandwidth for only transmitting voice, and provides End to End Encryption synchronous in described additional bandwidth.

13. methods according to claim 1, wherein, described time slot comprises the additional bandwidth that exceedes in described time slot the bandwidth for only transmitting voice, and in described additional bandwidth, provide signaling, described signaling is called out relevant and is addressed to the communication equipment (200) that does not participate in any calling in described time slot to other on physical channel.

14. methods according to claim 13, wherein, the signaling designator in described lower floor header indicates described time slot to comprise described signaling.

15. methods according to claim 1, wherein, the periodicity of described accurate circuit-mode channel is ignored the time slot in the specific signaling frame in the multiframe that is included in described timing.

16. methods according to claim 1, also comprise: in the time setting up described accurate circuit-mode channel, provide voice packing instruction to the receiver (200) that participates in the calling in described time slot, the instruction of voice packing pattern is bundled to the number of the speech frame of the calling in time slot.

17. methods according to claim 1, wherein, described lower floor header comprises mac header.

18. methods according to claim 1, wherein, described lower floor header is in downlink time slots, and the status indicator that comprises the state of indicating the uplink time slot being associated with described downlink time slots.

19. methods according to claim 18, also comprise: in the time that described status indicator indicates described uplink time slot idle, in the calling of described receiver (200) on the time slot that receives described down link, send at least one in random access information or data.

20. methods according to claim 1, wherein, the beginning of the each calling of described time slot in described time slot comprises unique header, and described unique header instruction is for the call information of described calling.

21. methods according to claim 20, wherein, described unique header comprises data indicator, and whether described data indicator instruction is included in described time slot for the data of described receiver (200).

22. methods according to claim 21, also comprise: described receiver (200) is ignored the data in described time slot, unless the instruction of described data indicator exists the data for described receiver (200) in described time slot.

23. methods according to claim 20, wherein, when there is multiple calling in described time slot time, each calling can both have the independent data for described receiver (200).

24. methods according to claim 1, also comprise: between described transmitter (200) and described receiver (200), distribute separately uplink channel and downlink channel, make the corresponding time slot of described uplink channel and described downlink channel can be assigned to different calling.

25. methods according to claim 1, also comprise: transmit original allocation from described transmitter (200) to described receiver (200), described original allocation comprises when setting up when calling periodicity for frame, time slot and the accurate circuit-mode channel of the initiation of described calling.

26. methods according to claim 25, also comprise: after setting up calling, transmitting additional channel from described transmitter (200) distributes, time slot subsequently described in described additional channel allocation identification in accurate circuit-mode channel and the periodicity of described accurate circuit-mode channel, to allow other receivers (200) to enter described calling evening.

27. methods according to claim 1, also comprise:

In the time that communication equipment (200) is associated with described accurate circuit-mode channel due to the only calling in described accurate circuit-mode channel, after described end of calling, described communication equipment (200) stops the use to described accurate circuit-mode channel immediately; And

In the scheduled time slot of described communication equipment (200) after the call contents of previously not distributing to the time slot of the described physical channel of described accurate circuit-mode channel finishes supervision to previously distributed to described accurate circuit-mode channel time slot reuse relevant signaling, with the time slot of previously distributing to described accurate circuit-mode channel is redistributed to:

The recovery of the calling on described accurate circuit-mode channel and described accurate circuit-mode channel or different initiation of calling out,

Data circuit mode channel, or

Different accurate circuit-mode channels.

28. methods according to claim 27, also comprise: described transmitter (200) transmits described scheduled time slot to described communication equipment (200).

29. methods according to claim 27, wherein, after described end of calling, deallocate immediately described accurate circuit-mode channel, thereby allow assignment to be reallocated to transfer of data or one or more other accurate circuit-mode channels to the time slot of described accurate circuit-mode channel.

30. methods according to claim 1, wherein, described time slot comprises calling, and described method also comprises: described transmitter (200) transmits the signaling being associated with described calling in scheduled time slot in any time slot of described physical channel.

31. methods according to claim 1, also comprise: if can not participate in the ongoing calling that the communication equipment (200) of accurate circuit-mode call will add described accurate circuit-mode channel, retaining on described accurate circuit-mode channel in ongoing calling, for described communication equipment (200) is set up another calling on circuit-mode channel.

32. methods according to claim 1, also comprise: if can not participate in the ongoing calling that the communication equipment (200) of accurate circuit-mode call will add described accurate circuit-mode channel,, before described communication equipment (200) adds described calling, the ongoing calling on described accurate circuit-mode channel is assigned to circuit-mode channel again from described accurate circuit-mode channel.

33. methods according to claim 1, also comprise: can both participate in accurate circuit-mode call if can not participate in the every other communication equipment (200) that the communication equipment (200) of accurate circuit-mode call leaves in calling and the described calling on traditional circuit mode channel, described calling be assigned to again to described accurate circuit-mode channel.

34. methods according to claim 1, also comprise: the one or more time slot allocation outside described accurate circuit-mode channel are given described receiver (200) by described transmitter (200), described receiver is sent or receive data.

35. methods according to claim 34, wherein, use the knowledge of the ability of the described receiver (200) in described transmitter (200) to distribute one or more time slots to transmit or to receive data in described one or more time slots.

Receiver (200) in 36. 1 kinds of communication systems (100), wherein, timing comprises frame, each frame comprises time slot, described receiver (200) comprises receiver circuit (208), during the time slot of the accurate circuit-mode channel of described receiver circuit on data channel, receive at least one in voice or data, wherein, described accurate circuit-mode channel is the logic channel of setting up on physical packet data channel, processor via described receiver (200) comes with lower-layer protocols header described time slot prefixing, this lower-layer protocols header allows the distribution of the voice-and-data in described time slot, and guarantee the compatibility of the use of other time slots on described time slot and described data channel.

Claims

1. the method for communicating by letter between the transmitter in communication system and receiver, wherein, timing comprises frame, each frame comprises time slot, described method comprises: during the time slot of the accurate circuit-mode channel on data channel, transmit at least one in voice or data, with lower-layer protocols header, to time slot prefixing, this lower-layer protocols header allows the distribution of voice-and-data in described time slot, and guarantees the compatibility that other time slots on described time slot and described data channel use.

3. method according to claim 2, also comprises:

5. method according to claim 1, wherein, described time slot comprises for the calling of receiver and data, and described receiver is related in this calling.

7. method according to claim 5, wherein, described calling is not encapsulated in packet.

8. method according to claim 1, wherein, described time slot comprises for the calling of receiver and data, in any calling of this receiver in described time slot, is not all related to.

13. methods according to claim 1, wherein, described time slot comprises the additional bandwidth that exceedes in described time slot the bandwidth for only transmitting voice, and in described additional bandwidth, provide signaling, described signaling is called out relevant and is addressed to the communication equipment that does not participate in any calling in described time slot to other on physical channel.

16. methods according to claim 1, also comprise: in the time setting up described accurate circuit-mode channel, provide voice packing instruction to the receiver that participates in the calling in described time slot, the instruction of voice packing pattern is bundled to the number of the speech frame of the calling in time slot.

19. methods according to claim 18, also comprise: in the time that described status indicator indicates described uplink time slot idle, in the calling of described receiver on the time slot that receives described down link, send at least one in random access information or data.

21. methods according to claim 20, wherein, described unique header comprises data indicator, and whether described data indicator instruction is included in described time slot for the data of described receiver.

22. methods according to claim 21, also comprise: described receiver is ignored the data in described time slot, unless the instruction of described data indicator exists the data for described receiver in described time slot.

23. methods according to claim 20, wherein, when there is multiple calling in described time slot time, each calling can both have the independent data for described receiver.

24. methods according to claim 1, also comprise: between described transmitter and described receiver, distribute separately uplink channel and downlink channel, make the corresponding time slot of described uplink channel and described downlink channel can be assigned to different calling.

25. methods according to claim 1, also comprise: transmit original allocation from described transmitter to described receiver, described original allocation comprises in the time setting up calling the periodicity for frame, time slot and the accurate circuit-mode channel of the initiation of described calling.

26. methods according to claim 25, also comprise: after setting up calling, transmitting additional channel from described transmitter distributes, time slot subsequently described in described additional channel allocation identification in accurate circuit-mode channel and the periodicity of described accurate circuit-mode channel, to allow other receivers to enter described calling evening.

27. methods according to claim 1, also comprise:

In the time that communication equipment is associated with described accurate circuit-mode channel due to the only calling in described accurate circuit-mode channel, after described end of calling, described communication equipment stops the use to described accurate circuit-mode channel immediately; And

In the scheduled time slot of described communication equipment after the call contents of previously not distributing to the time slot of the described physical channel of described accurate circuit-mode channel finishes supervision to previously distributed to described accurate circuit-mode channel time slot reuse relevant signaling, with the time slot of previously distributing to described accurate circuit-mode channel is redistributed to:

Data circuit mode channel, or

Different accurate circuit-mode channels.

28. methods according to claim 27, also comprise: described transmitter transmits described scheduled time slot to described communication equipment.

30. methods according to claim 1, wherein, described time slot comprises calling, and described method also comprises: described transmitter transmits the signaling being associated with described calling in scheduled time slot in any time slot of described physical channel.

31. methods according to claim 1, also comprise: if can not participate in the ongoing calling that the communication equipment of accurate circuit-mode call will add described accurate circuit-mode channel, retaining on described accurate circuit-mode channel in ongoing calling, for described communication equipment is set up another calling on circuit-mode channel.

32. methods according to claim 1, also comprise: if can not participate in the ongoing calling that the communication equipment of accurate circuit-mode call will add described accurate circuit-mode channel,, before described communication equipment adds described calling, the ongoing calling on described accurate circuit-mode channel is assigned to circuit-mode channel again from described accurate circuit-mode channel.

33. methods according to claim 1, also comprise: can both participate in accurate circuit-mode call if can not participate in the every other communication equipment that the communication equipment of accurate circuit-mode call leaves in calling and the described calling on traditional circuit mode channel, described calling be assigned to again to described accurate circuit-mode channel.

34. methods according to claim 1, also comprise: the one or more time slot allocation outside described accurate circuit-mode channel are given described receiver by described transmitter, described receiver is sent or receive data.

35. methods according to claim 34, wherein, distribute one or more time slots to transmit or to receive data in described one or more time slots by the knowledge of the ability of the described receiver in described transmitter.

Receiver in 36. 1 kinds of communication systems, wherein, timing comprises frame, each frame comprises time slot, described receiver comprises receiver circuit, during the time slot of the accurate circuit-mode channel of described receiver circuit on data channel, receive at least one in voice or data, processor via described receiver comes with lower-layer protocols header described time slot prefixing, this lower-layer protocols header allows the distribution of the voice-and-data in described time slot, and guarantees the compatibility of the use of other time slots on described time slot and described data channel.