CN1832624B - Communication system and communication device and communication terminal and communication method - Google Patents
Communication system and communication device and communication terminal and communication method Download PDFInfo
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Abstract
This invented communication method is to send data to multiple terminals by public channels from base stations and control the transmission power based on the receiving state of one terminal, in which, terminals send the receiving ability information when selecting combination and a base station in multiple stations receives the information and informs a base station control device controlling multiple base stations, besides, if there is a connection request to the terminal, the control device refuses to assign independent channel to the connection request when judging it can't assdign an independent channel to the terminal according to the receiving ability information.
Description
The application is that denomination of invention is " communication system and communicator and communication terminal and communication means ", the applying date to be that November 25, application number in 2005 are dividing an application of female case of 200480004785.4.
Technical field
The present invention relates to be fit to broadcasting or communication system, communicator, communication terminal and the communication means of the type communication service that multicasts in the mobile communication.
Background technology
In the mobile telephone system in the past, be prerequisite to 1 couple at terminal, 1 relation, do not consider that the base station sends the service of data simultaneously to a plurality of terminals with the base station.Had the method for notifying the terminal in the cell with the common channel that is called announcement information simultaneously, but the method is used to notify control information, is not to be used for high-speed communication to the user being provided in the past.
In recent years, as the mobile communication service, the expectation multimedia service; Especially to distributing the technology of physical culture relay, weather forecast, radio broadcasting for simultaneously a plurality of users, interest is constantly surging.The information of 1 couple 1 communication provides the Radio Resource of must each terminal guaranteeing needs in the past.The broadcast-type multicast services is sent so that saving Radio Resource is purpose simultaneously a plurality of users are carried out 1, makes a plurality of users can receive the data that this service is sent with common channel from the base station simultaneously.Specifically at the 3rd generation partner planning (3GPP:3
RdGenerationPartnership Project) in, this technology is called MBMS (Multimedia Broadcast MulticastService: multimedia broadcasting or multicast services).
In the multimedia service in the past, there is the problem of the quality when guaranteeing signal weaker on the cell edge.As its solution, the open 2003-188818 communique of Japan's patent has disclosed and has utilized transmission power control to guarantee quality.In view of the above, from the base stations control transmitted power, make the minimum terminal of received power that is in the cell edge also can guarantee quality, thereby quality can be guaranteed.Yet, because the channel that did not have transmission power control function is originally added transmitted power, form complex operations, again owing to also can take care of data according to being in the cell edge.Yet this selection combination makes the channel of the selection combination usefulness of the part that the extra reception in terminal selects to make up, thereby needs many receiving circuits, exists hardware size to become big trend.When there is the incoming call of using new private channel at the terminal of having only a small amount of receiving circuit in selecting combination, must stop to select combination, only rely on channel to continue to receive the MBMS data from 1 base station.So the quality of reception at this terminal sharply descends, thereby transmitted power is had to improve in the base station.As a result, distribute to the power reduction at other terminals such as private channel, thereby the message capacity of this base station reduces.There is big problem.
Summary of the invention
The objective of the invention is to, thus obtain a kind of when selecting to make up suitably the new settings of the private channel of control can improve communication system, communicator, communication terminal and the communication means of the message capacity of whole system.
Communication means of the present invention sends data through common channel from the base station to a plurality of terminals, also sends the transmitted power of data simultaneously according to the accepting state control base station at least one terminal in a plurality of terminals.In addition, the receiving ability information when selecting combination is sent at the terminal, at least one base station in a plurality of base station receives the receiving ability information when selecting combination, and the base-station control apparatus of a plurality of base stations of notice control.And, when the connection request at pair terminal is arranged, the receiving ability information of base-station control apparatus when selecting combination, be judged as can not situation to the private channel of terminal distribution under, the base-station control apparatus refusal distributes private channel to connection request.
Description of drawings
Fig. 1 is system's composition diagram of the W-CDMA of embodiment of the present invention 1～4.
Fig. 2 is the channel composition diagram of embodiment of the present invention 1～4.
Fig. 3 is the key diagram that the MBMS of embodiment of the present invention 1～4 selects combination.
Fig. 4 is the functional block diagram that the terminal of embodiment of the present invention 1～4 is shown.
Fig. 5 is the functional block diagram that the base station of embodiment of the present invention 1～4 is shown.
Fig. 6 is the functional block diagram that the base-station control apparatus of embodiment of the present invention 1～4 is shown.
Fig. 7 is the precedence diagram of MBMS that embodiment of the present invention 1 the is shown processing when selecting to produce in the combination private channel communication.
Fig. 8 is the example of the UE Capabilities (UE capability) of the MBMS of embodiment of the present invention 1 when selecting combination.
Fig. 9 is the flow chart that MBMS that embodiment of the present invention 1 is shown selects in the combination to judge whether to utilize according to UE Capabilities the processing of private channel.
Figure 10 be embodiment of the present invention 2 is shown MBMS between period of use according to the flow chart that whether has idle acceptance division to judge whether to utilize the processing of private channel.
Figure 11 is the flow chart that the type according to private channel (traffic rate) that embodiment of the present invention 3 is shown judges whether to utilize the processing of private channel.
Figure 12 is the precedence diagram of MBMS that embodiment of the present invention 4 the is shown processing when selecting Assemble Duration to produce private channel communication.
Practical implementationMode
System forms
Fig. 1 is system's composition diagram of the multimedia communications system of execution mode 1.Terminal 100 is that the user is used to receive the communicator from the data of one or more base stations 101.Communicating by letter with a plurality of terminals 100 in the cell in each base station 101, carries out data transmit-receive.Base-station control apparatus 102 connects a plurality of base stations 101, has the function of each base station 101 of control.Base-station control apparatus 102 also connects the SGSN103 (Service GPRS Support Node:GPRS service support node) that bears packet communication, and communicating by letter between each base station 101 and the SGSN103 carried out relaying.The restriction of the participation of SGSN103 processing and each subscriber-related authentication, service, routing, mobile management, service, context management, pay imformation etc.GGSN (GPRS Gateway Support Node:GPRS critical point support node) has the function to the critical point of external network (for example the Internet), the path of the packet of the SGSN that guarantees to come in and go out.Except that the function of critical point, GGSN104 also carries out processing such as pay imformation accumulation, mobile management, QoS (service quality) negotiation, the control of traffic carrying capacity adjustment policy.Service centre 105 is used for keeping, sends the content that service usefulness is provided, and GGSN104 is sent the data of related content according to user's request.In the W-CDMA system, sometimes terminal 100 is called UE, base station 101 is called Node B, base-station control apparatus 102 is called RNC (RadioNetwork Controller: radio network controller).
Channel
Then, the channel that is used for the packet communication of MBMS etc. with Fig. 2 explanation.
The physical channel of the down direction at 101 pairs of terminals 100 from the base station at first, is described.CPICH202 (Common Pilot Channel: common pilot channel) be the channel that is used for all cells are notified whole timing bases.P-CCPCH203 (Primary-Common Control PhysicalChannel: the 1st centralized control physical channel) be the channel of notifying other announcement information to use to each terminal 100, it is used as announcement information with channel BCH (Broadcast Channel: broadcast channel).Also have S-CCPCH204 (the Secondary-Common Control PhysicalChannel: the 2nd centralized control physical channel), allow to have many these channels that signalings and data are used is sent at each terminal 100.Prepare PICH205 (paging indicator channel) for the down direction paging with the transmission of designator again.
As the common channel of the up direction of 100 pairs of base stations 101, RACH206 (RandomAccess Channel: RACH) is arranged from the terminal.At last, with DPCH207 (Dedicated PhysicalChannel: DPCH) be used as the two-way use of up channel or down channel, respectively set for and be used for communicating by letter with particular terminal.This DPCH207 is used for the communication of voice and data etc. (private data) and the signaling of high-end layer.DPCH207 has the DPDCH that sends data (Dedicated Physical Data Channel: Dedicated Physical Data Channel) with DPCCH (the Dedicated PhysicalControl Channel: Dedicated Physical Control Channel) of the binary digit of transmission relevant controlling.DPCH207 is used for each terminal, thereby is referred to as private channel; Other channel is worked out standard jointly by a plurality of terminals, thereby is referred to as common channel.
In the above-mentioned explanation, as an example, form according to the base station 101 of W-CDMA system and the channel in the radio zone between the terminal 100 and to be illustrated, but also can be used for other communication system.Above-mentioned channel is so long as send the channel of same data, and which kind of channel is all available.For example, can make 1 channel of above-mentioned many channel sharings.
The data allocations operation
Then, with Fig. 1 and Fig. 2 the operation of MBMS data allocations is described.The situation of the 100 sides request service from the terminal is arranged, but the transmission data conditions from content server side is described here.
At first, the content provider sends (MBMS data) such as multi-medium datas to service centre 105.Service centre 105 stores multimedia messagess, also through GGSN104 multi-medium data is sent to the SGSN103 at the terminal 100 of management and utilization multimedia service simultaneously.SGSN103 is 101 transmission multi-medium datas through 102 pairs of base stations of base-station control apparatus, and base station 101 usefulness S-CCPCH channels 204 distribute multi-medium datas.The a certain S-CCPCH of 100 reception base stations 101, terminal obtains the multi-medium data that send base station 101.At this moment, be positioned at that cell edge etc. is located and the not good enough terminal 100 of state that receives from the S-CCPCH of 1 base station 101 also receives the S-CCPCH that send other base station 101, the channel more than 2 is selected combination, seek to improve the quality of reception.
Select combination operation
Then, with Fig. 3 the selection combination operation is described.Base-station control apparatus 102 connects a plurality of base station 101a, 101b usually, and the identical MBMS data of content are sent in these base stations 101.Terminal 100 is under the situation of the end (cell edge) of cell, and only with a certain side's base station (for example base station 101a) when Radio Link is set, owing to reason such as a little less than the received power, the quality of reception descends.So use as the identical MBMS data of many S-CCPCH204a, the S-CCPCH204b received content of common channel at terminal 100.Each MBMS decoding that terminal 100 will be received; And according to the reliability information to each MBMS data such as check results of CRC (CRC); Select the high data of reliability in a plurality of MBMS data after decoding, the MBMS data of selecting are used for application processes etc.Through the combination that elects like this, terminal 100 also can receive correct MBMS data when being in the bad situation of the quality of reception at positions such as cell edges possibility improves, thereby can obtain the good quality of reception.
The composition at terminal
Then, specify the composition at terminal 100 with Fig. 4.Fig. 4 illustrates and carries out the composition that the MBMS data are selected the terminal 100 of combination.At first; Application processing section 400 is carried out man-machine interfaces such as conversion process such as sound coding and decoding and image coding and decoding, key entry and picture demonstration and is handled, and up common channel sending part 402, up private channel sending part 403 are supplied with information such as the data of sending and the request of transmission.Protocol processes portion 401 carries out the related processing of Control on Communication such as channel setting, release, interval switching according to the request of application processing section 400.For example, explain that the transmission at terminal 100 is handled: the telephone number of application processing section 400 accepted users input, and to the 401 request exhalation of protocol processes portion.Protocol processes portion 401 controls with up private channel sending part 403 up common channel sending part 402 in order to send the control information that needs, to carry out according to the agreement of stipulating in the communication specification and being connected of base station 101.Up common channel sending part 402 and 403 pairs of up private channel sending parts send data and carry out encoding process such as Turbo coding and transmission timing controlled etc., and coded data is outputed to modulation portion 404.Channel code that modulation portion 404 usefulness code generators 405 produce and scrambled code are expanded the up common channel sending part 402 and the signal of up private channel sending part 403 outputs and are modulated.After D/A converter 406 is transformed into analog signal with modulated signal, be transformed into RF (radio frequency) signal in frequency conversion portion 407.Power amplifier 408 outputs to antenna 409 after the signal after the conversion is amplified to the power of hope.Signal after antenna 409 will amplify sends to base station 101 as wireless signal.
Then, the reception of terminal 100 being described is handled.The small-signal that is received by antenna 409 is transformed into baseband signal by frequency conversion portion 411 after low noise amplifier 410 is amplified.Then, A/D converter 412 is transformed into digital signal with analog baseband signal, and digital signal is outputed to acceptance division 413 and search portion 417.
Search portion 417 carries out the cell search according to digital signal and multipath detects, and each acceptance division 413 is passed in detected timing.Search refers to distribute control part 418 to select to think in the mulitpaths to distribute to and search finger 414 in effective path.Each acceptance division 413a, b, c have a plurality of searches finger 414 and combination section 415; And behind the channel code and the reception signal despreading of scrambled code with code generator 416 outputs with each path; Result to the despreading gained carries out the multipath combination, thereby receives the signal of the channel of distributing to oneself.Usually have a plurality of searches finger 414, receive to search the signal that refers to distribute each path that control part 418 distributes.The output of finger 414 is searched in combination section 415 combinations, and it is outputed to input store 419.
The running of the combination section 415 when combination is selected in explanation below.Search portion 417 carries out the cell search according to receiving signal, finds out a plurality of cells (base station).Then, code generator 416 produces the scrambled code corresponding with each district and the channel code of the channel that will receive.Receive which channel in which district by each acceptance division 413 of control part 430 indications of the running of each circuit of control terminal.Control part 430 according to the error rate of the channel quality information (CQI information) of the up/down channel of decoding part 420, CRC check or/and signal power to received powers such as interference signal received power ratio (for example through relatively) with these values and defined threshold, whether decision selects combination.When selecting to make up, control part 430 control code generators 416 make a plurality of acceptance divisions 413 receive the S-CCPCH that MBMS uses from different base stations respectively.In the terminal 100 of this Fig. 4, have 3 acceptance divisions 413, the S-CCPCH in that acceptance division 413a receiving control information is used receives the S-CCPH that MBMS uses at acceptance division 413b.Acceptance division 413c then receives the S-CCPCH that the MBMS from other base station 101 uses, so that select combination.Each acceptance division 413 can be independently regularly to receive these channels.
Decoding part 420 is read the content of input store 419, and CRC check and the Turbo decoding of carrying out data waits the decoding processing, and its result is write output storage 421.The common hardware size of decoder is big, thereby majority utilizes 1 this decoder with time division way.Yet, when a plurality of decoder is housed, also can be to each cell or each channel allocation decoder.Memory 419,421 can be used independently memory of each acceptance division 413, also can a plurality of acceptance division 413 shared large memories.
Then, carry out the processing that each channel needs, and obtain the announcement information that needs from BCH, pass to agreement control part 401 at announcement information acceptance division 422.When the data of descending private channel acceptance division 423 after decoding are application data, these data are delivered to application processing section 400; When these data are control information, be sent to protocol processes portion 401.When selection portion 425 elects combination at needs; Read the data that a plurality of acceptance division 413b, c receive respectively from output storage 421; According to the CRC check result in the decoding part 420, the data that praise are outputed to information common channel acceptance division 424, and discarded other data.When not selecting to make up, selection portion 425 does not abandon the data of each acceptance division 413b, c reception, and it is outputed to descending common channel acceptance division 424.
Descending common channel acceptance division 424 is identical with descending private channel acceptance division 423, when the data that receive are application data, control information, the data of receiving is outputed to application processing section 400, protocol processes portion 401 respectively.
The 2CCPCH system information) and S-CCPCH information (Secondary CCPCHinformation: 2CCPCH information), can obtain the required information of demodulation such as diffusivity, channel code, timing slip of relevant S-CCPCH from these information S-CCPCH has S-CPPCH system information (Secondary CCPCH systeminformation:.Receive these parameters as control information by in announcement information acceptance division 422, descending private channel acceptance division 423 and the descending common channel acceptance division 424 any, and leave protocol processes portion 401 in.Protocol processes portion 401 at acceptance division 413, code generator 416, search portion 417, search and refer to distribute these parameters of setting in the control part 418 etc.Terminal 100 is owing to only use S-CCPCH from 1 effective cell receiving control information, and search refers to distribute control part 418 only will distribute to search finger 414 from the multipath component of 1 cell, does not make up the signal from different cells.
Fig. 4 only illustrates the holding wire of part from control part 430 to each one, but actual control part 430 is also controlled the processing of each one of the holding wire that do not draw.The signal (electric wave) that send the base station that control part 430 observation acceptance divisions 413 receive, and according to the transmission power control information of observed result to protocol processes portion 401 transmission request increase and decrease transmitted powers.Up common channel sending part 402 of protocol processes portion 401 usefulness or up private channel sending part 403 send to base station 101 with transmission power control information.
The composition of base station
The base station 101 (Node B) of this execution mode 1 then, is described with Fig. 5.
The processing of data is sent in explanation earlier to terminal 100.The various control informations and the data of at first, base-station control apparatus 102 being sent send to the control information of each channel of transmission or the sending part 500～502 of data.Announcement information sending part 500 carries out encoding process, and the announcement information that receives from base-station control apparatus 102 is carried at P-CCPCH.Each utilizes the terminal of private channel that descending private channel sending part 501 is set, and this sending part 501 carries out encoding process, and the data of private channel and control information are carried on DPCH.Equally, descending common channel sending part 502 also with control information and multi-medium data coding, carries it on S-CCPCH.S-CCPCH can be 1, also can be many.After modulation portion 503 is expanded above-mentioned each sending part coded data to each channel with channel code and scrambled code, it is outputed to D/A converter 505.Produce channel code and scrambled code by code generator 504.D/A converter 505 becomes analog signal with digital signal conversion, and frequency conversion portion 506 further is transformed into RF (radio frequency) signal with the analog signal after the conversion.The RF signal sends through antenna 508 after being amplified to the power of hope by power amplifier 507.At this moment, power amplifier 507 is according to the 100 transmission power control information Control magnification ratios received from the terminal.
Then, the Signal Processing that receives self terminal 100 is described.The small-signal that antenna 508 receives is transformed into baseband signal by frequency conversion portion 510 after low noise amplifier 509 is amplified.Then, A/D converter 511 is transformed into digital signal with analog baseband signal.The scrambled code that the up code generator 513 of demodulation section 512 usefulness produces makes the Signal Separation from each terminal 100, makes each channel separation at this terminal 100 with channel code.Signal after demodulation section 512 demodulation in addition after the channel decoding, sends to base-station control apparatus 102 with private channel signal and common channel signaling respectively by up private channel acceptance division 514 and up common channel acceptance division 515.
Base-station control apparatus
The composition of base-station control apparatus 102 then, is described with Fig. 6.Base-station control apparatus 102 carries out relaying between the radiolink of the processing of core network and base station 101, mainly play managing radio resources and base station 101 indications are set up channel, discharged channel.The wireless access network subsystem component) etc. transmitting-receiving handling part 600 connects core networks and other base-station control apparatus, carries out (the Radio Access Network Application Part: core network that the wireless access net means) waits and RASAP (Radio Access Network Subsystem Application Part: the communication protocol processing of other RNC to RANAP.The Node B application component) etc. the transmitting-receiving handling part 601 of base station is carried out NBAP (Node B Application Part: the communication protocol to base station 101 is handled.Qos parameter mapping portion 602 obtains the parameter of the wireless channel that meets the demands according to QoS (service quality) indication from core network.Radio Resource portion 603 carries out the processing of relevant Radio Resource, and utilizes the RRC signaling to carry out control and parameter notice to terminal 100.Radio Link control part 604 carries out the buffer memory of Radio Link and controls with retransmitting.
These function sharings are function logic property, are not limited to, hardware soft in reality and clearly separate in installing.
Connection control based on UE Capabilities (UE capability) notice
The connection control of this execution mode 1 that uses above-mentioned communication system then, is described.
Considering to utilize to exist in the MBMS process from network side uses the situation etc. of the connection of private channel to produce simultaneously that MBMS makes up with the selection of S-CCPCH and the situation of the reception of DPCH.Under this situation, terminal 100 needs to receive control and uses S-CCPCH for MBMS; In order to select combination, need to receive at least 2 MBMS and use S-CCPCH.In addition, also need carry out the reception of DPCH.That is, terminal 100 needs 4 acceptance divisions 413, to receive 4 channels altogether.Yet terminal 100 has many acceptance divisions 413 and brings hardware to increase, and need the low acceptance division 413 of many band usage frequencies, thereby efficient is poor.On the other hand; Also can stop to select combination, only make among 2 acceptance division 413b selecting combination usefulness, the c 1 acceptance division 413b receive MBMS and use S-CCPCH, another acceptance division 413c receives DPCH; But at this moment as whole system, the problem that exists message capacity to be adversely affected.That is to say that for the quality of reception that makes terminal 100 keeps good, base station 101 is always controlled transmitted power.In the terminal 100, when the quality of reception descended, base station 101 was improved transmitted power, improves the quality of reception.Yet, at the such common channel that passes through of MBMS a plurality of terminals 100 to be sent under the data conditions, the quality of reception at each terminal 100 is varied, has the problem at the terminal 100 that quality of reception difference is often arranged.Here; As indicated above, the terminal 100 that is positioned at the cell edge stops to select combination, when only relying on MBMS from 1 base station 101 to continue to receive data with S-CCPCH; The quality of reception at this terminal 100 does not make up the time difference than not electing, thereby transmitted power is had to improve in base station 101.As a result, distribute to the power reduction at other terminal 100, thereby the message capacity of other base station 101 has to also reduce.There is big problem.Therefore; The communication system of this execution mode 1 100 when not selecting to make up, connects control at the terminal, forms the link that private channel is not set; Thereby solve the problem that the whole system message capacity reduces, and the desirability of terminal 100 required hardware can reduce also.
Below, the sequence of operations when explaining that with Fig. 7 MBMS selects to produce private channel communication in the anabolic process.As an example, explain when having the speech incoming call in the process of utilizing MBMS whether decision sets the situation of private channel according to UECapabilities (UE capability).
Send expression other number of level or directly send each parameter through terminal 100, notify parameter shown in Figure 8 base station 101.When base station 101 receives the information (receiving ability information) of UE Capabilities (step ST101), this information is sent to base-station control apparatus 102, base-station control apparatus 102 receives these information, simultaneously also with its storage (step ST102).
When above-mentioned notifier processes finished, terminal 100 received the MBMS data from a plurality of base stations 101, and starts MBMS selection combination (step ST103).At this moment, the condition information informing base station 101 (step ST104) of combination is selected MBMS at terminal 100.Particularly, its number of channel that is actually used in the S-CCPCH that selects combination is sent or the information of the combination of representing whether electing in terminal 100.
Base-station control apparatus 102 100 when receiving MBMS and selecting the combined state information (step ST105), passed to this information from the terminal in base station 101.Base-station control apparatus 102 stores the condition information of receiving (step ST106) such as into memories.
On the other hand; When core network sends the incoming signal as connection request to base-station control apparatus 102 (step ST107), base-station control apparatus 102 selects the condition information of combination to judge whether to allow setting private channel (step ST108) according to said receiving ability information with MBMS.This step set forth in the back literary composition.Base-station control apparatus 102 is stored the condition information of receiving ability information and MBMS selection combination to each terminal 100, and relevant with which terminal 100 according to connection request, and more suitable receiving ability information and condition information judge whether to allow to connect.When not allowing that incoming signal distributed private channel, base-station control apparatus 102 refusal incoming calls, and the incoming call (step ST109) of notice core network refusal.Otherwise during permission, 102 pairs of incoming signals of base-station control apparatus respond, and base station apparatus 101 are implemented to start the signaling (step ST110) of DPCH (private channel).So base station apparatus 101 starts private channel (step ST111).At last, 100 pairs of base stations 101, terminal respond, and start private channel, begin to use the communication of DPCH.
Judgment processing among the above-mentioned steps ST108 is following.Fig. 9 illustrates base-station control apparatus 102 in the judgment processing of selecting Assemble Duration.At first, base-station control apparatus 102 receives UE Capabilities (receiving ability information) (step ST200).Then; The parameter that base-station control apparatus 102 is represented to select Assemble Duration whether can receive DPCH from UE Capabilities verification (" MBMS selects Assemble Duration to receive SCCPCH and DPCH simultaneously ") judges to select Assemble Duration whether to allow private channel and MBMS to select to make up (step ST201) according to this parameter.When not allowing when " denying " (), 102 pairs of core networks notices of base-station control apparatus refusal distributes private channel (step ST202).Otherwise during permission when " being " (), private channels (step ST203) are set in base-station control apparatus 102 indication base stations 101.
In sum; According to this execution mode 1; Because the receiving ability at the terminal 100 when selecting combination is carried out the setting of private channel, terminal 100 is near the cell edge etc. under the situation, when needing to select to make up because of quality of reception difference; The transmitted power that the private channel of ability inhibition connection causes extremely increases, and with little transmitted power MBMS is provided service.Therefore, can effectively suppress excessively to force down other communication and the message capacity variation that makes whole communication system.And, because all the terminal needn't possess the extensive hardware that can receive MBMS and private channel simultaneously, suppress to select the reception hardware of combination to increase, the terminal of the multimedia service of the user's of meeting needs capable of using can be provided with small-scale hardware.
Then, the example of controlling the setting of private channel (DPCH) according to the MAXIMUM SELECTION number of combinations at terminal 100 is described.Basic running is identical with execution mode 1, thereby the explanation difference.
Figure 10 is the flow chart of the judgment processing of explanation base-station control apparatus 102, and the details of the step ST108 of Fig. 7 is shown.
At first, the MBMS of base-station control apparatus 102 in memory read goes out the terminal 100 that receives the step ST106 of Fig. 7 selects number of combinations m (step ST300).The receiving ability information that base-station control apparatus 102 also receives among the step ST102 according to Fig. 7 is read from memory and can be received the maximum bar of the S-CCPCH that is used for MBMS and count n (" the S-CCPCH Radio Link maximum quantity that MBMS uses ") (n is for adding the value of the maximum bar number of S-CCPCH+1) here.Then, base-station control apparatus 102 calculates available residue acceptance division quantity n-m (step ST302), judges and selects whether to allow to set new private channel (DPCH) (step ST303) in the combination.That is, n-m＞0 o'clock, being judged as terminal 100 has the surplus that receives new private channel, allows to set private channel.Then, identical during with execution mode 1, when not allowing, base-station control apparatus 102 notice core network refusals distribute private channel (step ST304), and when allowing, the indication private channel of base station sets (step ST305).
Above-mentioned judgment processing is used for whole terminals 100 can make MBMS and select combination the time.Therefore, needn't as enforcement mode 1, distinguish the ability of the combination that elects and the ability of the combination that do not elect.
In the above-mentioned execution mode 2, the quantity that can receive S-CCPCH when selecting combination is as receiving ability information, but but the S-CCPCH received quantity (and depositing the S-CCPCH maximum quantity) when being not limited to select to make up also can judge whether to allow the private channel of connection.That is, send the S-CCPCH quantity m that current terminal receives, but S-CCPCH quantity m and S-CCPCH received quantity n that then more current terminal receives can judge whether terminal 100 has the surplus that receives private channel from the terminal to base-station control apparatus.
Then, the execution mode of selecting in the combination to judge whether to allow according to the speed of the S-CCPCH bar number of UE Capabilities, current selection Assemble Duration and private channel thereof private channel communication at MBMS is described.Basic running is identical with execution mode 2, thereby the explanation difference.
Even terminal 100 according to situation, does not utilize whole acceptance divisions 413 selecting Assemble Duration sometimes yet.Yet in this case, when private channel speed was high, the ability that surpasses decoder was handled in decoding, thereby the speed of private channel is provided with certain restriction.
Among Figure 11, the processing that the symbolic representation identical with Figure 10 is identical or suitable with the processing of Figure 10.Therefore, the processing before the step ST303 is identical with the processing of Figure 10.Among the step ST303, when base-station control apparatus 102 allows private channel (DPCH) communication, then confirm the speed of private channel, and judge whether below certain threshold value (for example 64kpbs) (step ST400).Here, threshold value can be any fixed value, also can be 100 values as the reception of UE Capabilities parameter from the terminal.Can also be to select number of combinations m preset threshold (threshold value that for example changes with m) according to the MBMS that reads at step ST300 with being inversely proportional to.Here, when base-station control apparatus 102 allows private channel communication, transfer to step ST305; When not allowing, transfer to step ST306.
According to this execution mode 3, can adjust the speed that terminal 100 is sent according to the decoding ability of decoder, thereby can suppress overflowing of terminal 100.
Execution mode 4
Then, explain that the UE Capabilities that in MBMS selects to make up, selects according to the user judges whether to allow the execution mode of private channel communication.The basic running of this execution mode is identical with execution mode 1, thereby following explanation difference.
The communication system of this execution mode is for example controlled according to user's selection: refusal speech incoming call during utilizing MBMS, otherwise or, even utilizing MBMS,, also converse though the MBMS service reduces.
Figure 12 illustrates the sequence of operations of the communication system of this execution mode 4, the symbolic representation identical or suitable processing identical with Fig. 7 of execution mode 1.At first, the user is to the relative importance value of terminal 100 input MBMS and private channel, and the application processing section 400 at terminal 100 is accepted from user's setting value (parameter of Fig. 8: " DPCH selects the relative importance value of combination to MBMS ").Then, terminal 100 is used as the set point of accepting as part UE Capabilities parameter and is sent to base station 101 (step ST501).Base station 101 receives the MBMS of user's selection and the relative importance value parameter of private channel, sends it to base-station control apparatus 102 (step ST502) simultaneously.The MBMS that base-station control apparatus 102 keeping users select and the relative importance value parameter (step ST503) of private channel.
At step ST509 the relative importance value parameter of taking care of is used to judge whether allow to set private channel (DPCH).That is, when becoming to make private channel (DPCH) preferential parameter setting, even terminal 100 is selecting combination also to proceed to step ST110, to the private channel of base station 101 indicative of settings.When setting private channel by base station 101, handle at terminal 100, makes the reception handling interrupt of MBMS, or interrupt selecting combination, distributes 1 acceptance division 413 to be used for private channel.Otherwise when not making private channel preferential, base station this 102 does not allow private channel communication (step ST109).
Certainly, the judgment standard of above-mentioned execution mode 1～3 capable of being combined and this relative importance value.For example, among the step ST509, can set for execution mode 1 that kind and can not receive S-CCPCH that MBMS uses and the terminal of DPCH simultaneously, according to which side reception of relative importance value decision carrying out.Again, identical with execution mode 2 and 3 o'clock, be judged as can not receive simultaneously the time by separately benchmark at base-station control apparatus 102, can judge which side make preferential according to relative importance value.
In sum, according to execution mode 4, can the multimedia service that meet user's needs can be provided according to select to continue the to elect combination or make the setting of private channel preferential of user's intention.And, utilizing MBMS during also can answer voice incoming call etc.
Whether expression preferentially sets the parameter of private channel may not be sent as UE Capabilities, and also available other signaling is sent.
Moreover the judgment processing of execution mode 1～4 can make up use each other.
Flow chart shown in each execution mode can be realized with application-specific integrated circuit (ASIC), also can in the combination of general processor (DSP etc.) and software, realize.
The program of each software can be recorded in the computer-readable recording medium, wireless or wire communication download also capable of using.
Each channel of explaining in the execution mode also can be used for same control channel and data transmission channel, thereby the title of these channels is not limited to above-mentioned explanation.Each part of Fig. 4～communication system shown in Figure 6 can be the basis with circuit, other hardware of the radio communication device of current use, changes and handles, thereby realize.Especially each functional unit utilizes the combination of general processor (DSP etc.) and software also can realize without special circuit.
Owing to save acceptance division hardware, when the control of MBMS power was not actively carried out according to the quality of reception at each terminal in the base station, the receiving ability information of above-mentioned execution mode was also effective with the control of selecting the private channel in the combination.
MBMS data of the present invention are not limited to multi-medium data, so long as the data of broadcast-type or the type data of multicasting get final product.Here, multicast and be meant and be defined in the communication that particular cluster (a plurality of user) such as participating in special services is sent.
Each composition of the present invention is not limited to the foregoing description, the communication technology in the future such as the specifications content that the MBMS of the 3GPP that in being no more than the scope of purport of the present invention, can be used for stipulating from now on is related.
In sum, according to the embodiment of the present invention, when MBMS selection combination is carried out at terminal 100, suitably control the new settings of private channel, thereby can improve the message capacity of whole system.
Practicality in the industry
The present invention can be used for the wireless communication system that the terminal receives many data channels.
Claims (2)
1. communication means; Multimedia broadcasting that multi-medium data is sent to a plurality of communication terminals (100) from base station (101) or multicast services (MBMS:Multimedia Broadcast Multicast Service) system, carry out; Said communication terminal is selected combination to the said multi-medium data that sends from a plurality of base stations through common channel; It is characterized in that, comprise
Receive multi-medium data receiving step with the multi-medium data of shared said common channel (204) broadcasting of a plurality of communication terminals (100);
Receive the private Data Receiving step of the private data of sending with private channel (207); Wherein, When said communication terminal is being selected to make up, determine whether setting said private channel according to the receiving ability of the said communication terminal that carries out said selection combination; And
Not having receiving ability to carry out said multi-medium data receiving step simultaneously at said communication terminal comes through said common channel receiving multimedia data when carrying out said private Data Receiving step and receive private data; Notice core network refusal distributes said private channel, the feasible notifying process that can't receive private data through said private channel.
2. the communication means described in claim 1 is characterized in that,
When in said multi-medium data receiving step, producing the incoming call of private channel, carry out said notifying process.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1411666A (en) * | 1999-10-29 | 2003-04-16 | 艾利森电话股份有限公司 | Channel-type switching from dedicated channel to common channel based on common channel load |
| CN1425257A (en) * | 2000-05-15 | 2003-06-18 | 索马网络公司 | Communication structure for multiplexed links |
| CN1469575A (en) * | 2002-06-24 | 2004-01-21 | 株式会社Ntt都科摩 | Mobile communication system and wireless information channel set-up method for mobile communication control apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1411666A (en) * | 1999-10-29 | 2003-04-16 | 艾利森电话股份有限公司 | Channel-type switching from dedicated channel to common channel based on common channel load |
| CN1425257A (en) * | 2000-05-15 | 2003-06-18 | 索马网络公司 | Communication structure for multiplexed links |
| CN1469575A (en) * | 2002-06-24 | 2004-01-21 | 株式会社Ntt都科摩 | Mobile communication system and wireless information channel set-up method for mobile communication control apparatus |
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