CN101114868B - Feedback channel distribution indicating method and system - Google Patents
Feedback channel distribution indicating method and system Download PDFInfo
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Abstract
The invention discloses an instructional method and system to allocate the feedback channels, which can facilitate a terminal to know the position of the resources occupied by the feedback channels allocated to the terminal through carrying the instructional information of the feedback channels allocated to the terminal in the dispatching channels, thereby solving the problem that in the down direction of the current LTE technique, when the base station dispatches a plurality of terminals by using the same dispatching channel at the same time, a plurality of terminals send the feedback information by using the same dispatching channel at the same time to the base station and the problem that in the current HSUPA technique, when the feedback information of a plurality of channels is transmitted by copying to a feedback channel, the complexity of realizing the base station and the terminal is high.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of feedback channel distribution indicating method and system.
Background technology
In order to improve user's peak-data transmission rate and throughput of system, 3-G (Generation Three mobile communication system) has been introduced HSDPA (High Speed Downlink Packet Access in the R5 release protocol, high speed downlink packet inserts) technology, in the R6 release protocol, introduced HSUPA (High Speed Uplink Packet Access, high speed uplink packet inserts) technology, be respectively applied for uplink enhancing and downlink transfer and strengthen.
All comparing class is seemingly for the operation principle of HSDPA technology and HSUPA technology and the key technology of employing, as all having adopted AMC (Adaptive Modulation and Coding, Adaptive Modulation and Coding), technology such as HARQ (Hybrid Automatic Repeat Request mixes automatic request retransmission request) and fast dispatch.In HSDPA technology and HSUPA technology, user resource allocation is all given by scheduling channel in the base station, data receiver all by feedback channel to data sending terminal feedback data piece whether by correct reception, data sending terminal carries out corresponding subsequent operation according to the feedback information that carries in the feedback channel.
In the HSDPA technology, data dispatch is all finished in the base station with transmission, and terminal receives data and feeds back.At TDD (Time Division Duplex, time division duplex) under the pattern, the control channel that dispatch the base station is HS-SCCH (Shared Control Channel for HS-DSCH, High-Speed Shared Control Channel), each HS-SCCH is at a TTI (Transmission Time Interval, Transmission Time Interval) can only transmit a user's schedule information in, and the resources effective duration that it distributed is a TTI.The base station sends schedule information by HS-SCCH to terminal, having indicated the base station in the schedule information is the resource location of terminal distribution, behind a Preset Time interval, terminal according to indicate in the schedule information for the resource location of terminal distribution at corresponding HS-PDSCH (High Speed Physical Downlink Shared Channel, high-speed physical downlink shared channel (HS-PDSCH)) receives data, behind another Preset Time interval, terminal is by a uplink feedback channel HS-SICH (Shared Information Channel for HS-DSCH, share indicating channel) send feedback information to the base station, for example at the ACK (Acknowledgement of the data block correctness that receives feedback, confirm) information or NACK (Non-Acknowledgement, deny) information, and be used for CQI (the Channel Quality Indicator that assistant base station is dispatched, the channel quality indication) information, follow-up scheduling is carried out according to the feedback information of receiving in the base station.In the HSDPA tdd mode, each HS-SCCH has a predefined HS-SICH related with it, if the base station adopts certain bar HS-SCCH that a terminal is dispatched at certain TTI, this terminal constantly just sends feedback information by the HS-SICH related with this HS-SCCH to the base station in predetermined feedback so.
At LTE (Long Term Evolution, Long Term Evolution) in the down direction, in order to save the control channel expense, system allows the base station to use same scheduling channel to dispatch a plurality of terminals at same TTI, in this case, if terminal continues to determine employed feedback channel by the mode that defines feedback channel associated therewith for each scheduling channel in advance, a plurality of terminals might appear in the problem of the identical feedback channel of identical time use to base station transmission feedback information.Therefore how in the LTE technology for terminal distribution and indicate its employed feedback channel, be assistant officer's problem to be solved in the LTE technology.
In the HSUPA technology, data dispatch is finished in the base station, and transfer of data is finished by terminal, and as the receiving terminal of data, whether the base station needs a feedback channel notice terminal data piece correctly to be received equally.Under tdd mode, the control channel that dispatch the base station is E-AGCH (Enhanced-Absolute Grant Channel, the enhancement mode absolute grant channel), in order to save the control channel expense, system allows configuration RDI field on E-AGCH, if disposed the RDI field, the resources effective duration that each dispatching office distributes can be a plurality of TTI.Behind the base station E-AGCH, through a Preset Time at interval, terminal according to indicate in the schedule information for the resource location of terminal distribution at corresponding E-PUCH (Enhanced Uplink Physical Channel, the enhanced uplink physical data channel) goes up the transmission upstream data, behind another one Preset Time interval, the base station is according to the correctness that receives data block, by a downstream feedback channel E-HICH (E-DCH HARQ Acknowledgement Indicator Channel, E-DCH HARQ feeds back indicating channel) to terminal feeding back ACK/nack message.Owing on E-AGCH, disposed the RDI field, therefore the base station can use same E-AGCH to dispatch a plurality of terminals at same TTI, can't be again by the definite E-HICH that should use of this incidence relation, this is because at same TTI, may use same E-AGCH to dispatch a plurality of users, in this case, terminal can't continue to determine employed feedback channel by the mode that defines feedback channel associated therewith for each scheduling channel in advance.
In the existing HSUPA technology usually employing will be multiplexed into that transmission manner solves the problems referred to above on the feedback channel at the feedback information of a plurality of terminals, its principle be the feedback information of the resource location differentiation different terminals that uses according to terminal.Its specific implementation process is: the resource location that may use according to terminal is determined the orthogonal code of similar number, and this corresponding relation is pre-stored in base station and end side.When carrying out feedback information (ACK or NACK) multiplexing, employed resource location when at first determining current each terminal transmission corresponding data that needs to send feedback information (can by time slot and code channel number-mark), find corresponding with it predefined orthogonal code according to its resource location then, utilize this corresponding orthogonal code respectively the feedback information at each terminal to be carried out spread spectrum one time again, then the signal behind the spread spectrum is superimposed, use OVSF (Orthogonal Variable Spreading Factor, the Orthogonal Variable Spreading Factor OVSF) sign indicating number of feedback channel correspondence that it is carried out sending to terminal behind the secondary spread spectrum.After terminal received feedback information, the ovsf code that at first uses the feedback channel correspondence carries out despreading to information to be handled, and utilized the corresponding orthogonal code of resource that uses with its transmission data that information is carried out the secondary despreading then and handled, obtain at last need feedback information.
When adopting above-mentioned feedback information to be multiplexed on the feedback channel transmission manner with a plurality of terminals, because the secondary spread processing all will be passed through to the feedback information of each terminal in the base station, this has just increased the implementation complexity of base station, and its using method with the existing system feedback channel is different; And terminal correspondingly will be handled through the secondary despreading when resolving feedback information, has also increased the implementation complexity and the power consumption of terminal.
Wave beam forming and power control are the technology that is used to reduce system interference that often adopts in the data transmission procedure, wherein the principle of wave beam forming technology is to send to most of energy constraint of a terminal information in a narrower beam coverage, for omnidirectional sends, can reduce interference to whole system.The principle of power control techniques then is the channel quality according to terminal, distributes to terminal as far as possible and just can satisfy the power that the quality of reception requires, and reduces transmitting power and reduces the purpose that terminal room disturbs thereby reach.When adopting above-mentioned feedback information with a plurality of terminals to be multiplexed on the feedback channel transmission manner, wave beam forming can't be carried out according to the arrival bearing of certain terminal in the base station.And owing to carried feedback information on feedback channel simultaneously at a plurality of terminals, generally can only be according to the transmitting power of the poorest terminal distribution feedback channel of channel quality, thus can increase interference to system.
Summary of the invention
The invention provides a kind of feedback channel distribution indicating method and system, in order to solve in the LTE technology down direction, when the base station uses same scheduling channel to dispatch a plurality of terminal at one time, a plurality of terminals may occur uses identical feedback channel to send the problem of feedback information to the base station in the identical time, and in the existing HSUPA technology, when the feedback information with a plurality of terminals is multiplexed into when transmitting on the feedback channel implementation complexity problem of higher of base station and terminal.
Technical solution of the present invention comprises:
A kind of feedback channel distribution indicating method comprises step:
A, network side are mapped to schedule information and feedback channel sign and send to terminal in the scheduling channel, and send downlink data according to the down physical channel resource location of described schedule information indication to terminal;
Down physical channel resource location downlink data receiving from the corresponding downstream physical channel that B, terminal are indicated according to schedule information, and the feedback channel resources position of indicating according to the feedback channel sign sends feedback information to network side;
Wherein, comprising before the steps A: network side sends to terminal with the corresponding relation of feedback channel sign and feedback channel resources position when being connected with the terminal service of setting up.
Preferably, network side is the corresponding feedback channel set of terminal configuration when being connected with the terminal service of setting up, and indicates the resource location of each feedback channel in the set with the feedback channel sign;
Perhaps,
Pre-configured unified feedback channel set comprises the corresponding relation that each feedback channel resources position and feedback channel identify in the described unified feedback channel set.
Preferably, network side is chosen a unappropriated feedback channel from the set of the feedback channel of terminal correspondence, the feedback channel sign of this feedback channel correspondence together is mapped to schedule information sends to terminal in the scheduling channel.
Preferably, network side is chosen a unappropriated feedback channel from pre-configured unified feedback channel, the feedback channel of this feedback channel correspondence sign together is mapped to schedule information sends to terminal in the scheduling channel.
Preferably, also comprise step behind the described step B:
Network side is according to the feedback information of the resource location receiving terminal transmission of the feedback channel of choosing for terminal.
Preferably, whether the downlink data of having indicated terminal to receive in the described feedback information is correct, and the channel quality that carries the down physical channel of this downlink data.
A kind of feedback channel distributes indication mechanism, comprising:
The schedule information sending module is arranged on network side, is used for that schedule information is mapped to scheduling channel and sends to terminal;
The downlink data sending module is arranged on network side, and the down physical channel resource location that is used for indicating according to schedule information sends downlink data to terminal;
The schedule information receiver module is arranged on end side, is used for receiving the schedule information that network side sends from scheduling channel;
The downlink data receiver module is arranged on end side, is used for down physical channel resource location downlink data receiving from the corresponding downstream physical channel of indicating according to schedule information;
Also comprise:
The feedback channel configuration module, be arranged on network side, when being connected with the terminal service of setting up, the corresponding relation of pre-configured feedback channel resources position and feedback channel sign is sent to feedback information sending module, feedback information receiver module and feedback channel indication sending module respectively, perhaps be the corresponding feedback channel set of terminal configuration, the corresponding relation that each feedback channel resources position and feedback channel in the set are identified sends to feedback information sending module, feedback information receiver module and feedback channel indication sending module respectively;
Feedback channel indication sending module is arranged on network side, is used to terminal to select corresponding feedback channel, and the feedback channel sign of this feedback channel correspondence is mapped to sends to terminal in the scheduling channel;
Feedback channel indication receiver module is arranged on end side, is used for receiving the feedback channel sign that network side sends from scheduling channel;
The feedback information sending module is arranged on end side, sends the feedback information of downlink data reception situation to network side according to the feedback channel resources position of the feedback channel sign indication that receives;
The feedback information receiver module is arranged on network side, the feedback information that sends according to the resource location receiving terminal of the feedback channel of choosing for terminal.
A kind of feedback channel distribution indicating method comprises step:
A, network side are mapped to schedule information and feedback channel sign and send to terminal in the scheduling channel;
B, terminal send upstream data according to the uplink physical channel resource location of described schedule information indication to network side;
C, network side receive upstream data according to the resource location of described schedule information indication from corresponding uplink physical channel, the feedback channel resources position of indicating according to the feedback channel sign sends feedback information to terminal;
Wherein, before steps A, comprise: when the service of setting up of network side and terminal is connected, the corresponding relation of feedback channel sign and feedback channel resources position is sent to terminal.
Preferably, network side is the corresponding feedback channel set of terminal configuration when being connected with the terminal service of setting up, and indicates the resource location of each feedback channel in the set with the feedback channel sign;
Perhaps,
Pre-configured unified feedback channel set comprises the corresponding relation that each feedback channel resources position and feedback channel identify in the described unified feedback channel set.
Preferably, network side is chosen a unappropriated feedback channel from the set of the feedback channel of terminal correspondence, the feedback channel sign of this feedback channel correspondence together is mapped to schedule information sends to terminal in the scheduling channel.
Preferably, network side is chosen a unappropriated feedback channel from pre-configured unified feedback channel, the feedback channel of this feedback channel correspondence sign together is mapped to schedule information sends to terminal in the scheduling channel.
Preferably, described step C specifically comprises step:
C1, network side receive upstream data according to the resource location of schedule information indication from corresponding uplink physical channel, and the arrival bearing of the signal that sends according to terminal carries out wave beam forming to the feedback information at terminal, and determines transmitting power at the feedback information of terminal according to the channel quality of the uplink physical channel of carrying upstream data;
C2, network side identify the feedback channel resources position of indication and described definite transmitting power sends feedback information from the process wave beam forming to terminal according to feedback channel.
Preferably, network side is determined the channel quality of the uplink physical channel that terminal transmission upstream data takies according to the received signal to noise ratio of upstream data.
Preferably, also comprise step behind the described step C:
Terminal receives the feedback information that network side sends according to the resource location of the feedback channel of described feedback channel sign indication.
Preferably, whether the upstream data of having indicated network side to receive in the described feedback information is correct.
A kind of feedback channel distributes indication mechanism, comprising:
The feedback channel configuration module, be arranged on network side, when being connected with the terminal service of setting up, the corresponding relation of pre-configured feedback channel resources position and feedback channel sign is sent to the feedback information sending module, feedback information receiver module and feedback channel indication sending module, it perhaps is the corresponding feedback channel set of terminal configuration, the corresponding relation of each feedback channel resources position and feedback channel sign in the set is sent to the feedback information sending module, feedback information receiver module and feedback channel indication sending module;
The schedule information sending module is arranged on network side, is used for that schedule information is mapped to scheduling channel and sends to terminal;
The schedule information receiver module is arranged on end side, is used for receiving the schedule information that network side sends from scheduling channel;
The upstream data sending module is arranged on end side, and the uplink physical channel resource location that is used for indicating according to schedule information sends upstream data to network side;
The upstream data receiver module is arranged on network side, and the uplink physical channel resource location that is used for indicating according to schedule information receives upstream data from corresponding uplink physical channel;
Also comprise:
Feedback channel indication sending module is arranged on network side, and the feedback channel sign that is used for feedback channel correspondence that network side is selected for use is mapped to scheduling channel and sends to terminal;
Feedback channel indication receiver module is arranged on end side, is used for receiving the feedback channel sign that network side sends from scheduling channel;
The feedback information sending module is arranged on network side, and the feedback channel resources position of indicating according to the feedback channel sign sends feedback information to terminal;
The feedback information receiver module is arranged on end side, and the resource location of the feedback channel of the feedback channel sign indication that receives according to feedback channel indication receiver module receives the feedback information that network side sends.
Beneficial effect of the present invention is as follows:
The present invention is used in the feedback channel distribution indicating method of LTE technology down direction, the feedback channel sign that network side will be distributed to terminal sends to terminal by scheduling channel, the resource location that the feedback channel that terminal can be known distribute to it takies, make terminal to send feedback information to network side according to the feedback channel resources position of the feedback channel sign indication that receives, thereby solved in the existing LTE technology when the base station when same TTI uses same scheduling channel to dispatch a plurality of terminal, the feedback channel collision problem that may occur.
The present invention is used in the feedback channel distribution indicating method of HSUPA and LTE technology up direction, network side will send to terminal by scheduling channel at the feedback channel sign of terminal, and send feedback information to terminal according to the feedback channel resources position that it is chosen, because the feedback information at each terminal all uses independent scheduling channel to carry, therefore network side only need carry out one time spread processing, thereby reduced implementation complexity, and consistent with the using method of existing system feedback channel, guaranteed equipment compatibility; During the terminal parses feedback information, also only a despreading be need carry out in addition, implementation complexity and power consumption reduced.Further, the arrival bearing of the signal that network side can send according to terminal carries out wave beam forming to the feedback information at terminal, and determine transmitting power at the feedback information of terminal according to the channel quality of the uplink physical channel of carrying upstream data, make network side to send feedback information to terminal according to its feedback channel resources position of choosing and described definite transmitting power through wave beam forming.To be multiplexed at the feedback information of a plurality of terminals in the existing HSUPA technology when transmitting on the feedback channel thereby solved, can't carry out the problem of wave beam forming and power control at each terminal.
Description of drawings
Fig. 1 is used for the flow chart of the feedback channel distribution indicating method of LTE technology down direction for the present invention;
Fig. 2 distributes the composition structured flowchart of indication mechanism for the feedback channel that the present invention is used for LTE technology down direction;
Fig. 3 is used for the flow chart of the feedback channel distribution indicating method of HSUPA technology for the present invention;
Fig. 4 is used for the flow chart of the feedback channel distribution indicating method of LTE technology up direction for the present invention;
Fig. 5 distributes the composition structured flowchart of indication mechanism for the feedback channel that the present invention is used for HSUPA and LTE technology up direction.
Embodiment
Technical solution of the present invention is by carrying the indication information of the feedback channel of distributing to terminal on scheduling channel, the resource location that the feedback channel that terminal can be known distribute to it takies, thereby solved in existing LTE or the HSUPA technology when network side when same TTI uses same scheduling channel to dispatch a plurality of terminal, the feedback channel collision problem that may occur.
Be explained in detail to the main realization principle of technical solution of the present invention, embodiment and to the beneficial effect that should be able to reach below in conjunction with each accompanying drawing.
See also Fig. 1, this figure is the flow chart that the present invention is used for the feedback channel distribution indicating method of LTE technology down direction, and its main implementation procedure is:
The service of setting up is connected between step S10, network and the terminal.
Step S11, network side send to terminal with the resource location of each feedback channel in the feedback channel set of terminal correspondence and the corresponding relation of feedback channel sign;
In the LTE technology, the resource location of feedback channel is the subcarrier that feedback channel takies.
Can adopt dual mode in the present embodiment is the corresponding feedback channel set of terminal configuration, is illustrated respectively below:
First kind of mode is: the base station is the set of the corresponding feedback channel of each terminal configuration, and with the resource location of each feedback channel in the feedback channel sign indication set, and the mapping table of feedback channel sign and feedback channel resources position is sent to terminal.Under this configuration mode, the feedback channel of different terminals sign can be different with the mapping table of feedback channel resources position.
For can being less than or equal to feedback channel, the number of feedback channel in the feedback channel set of terminal configuration identifies the maximum number that to indicate, following table is under the situation of three feedback channels that has been terminal configuration of base station, the mapping table of feedback channel sign and feedback channel resources position:
| Feedback channel sign (2bit) | The resource location that feedback channel takies |
| 00 | Article one, the subcarrier that takies of feedback channel |
| 01 | The subcarrier that the second feedback channel takies |
| 10 | Article three, the subcarrier that feedback channel takies |
| 11 | Invalid indication |
The second way is: the base station is provided with unified feedback channel set in advance, and when the service of foundation connected, the resource location of each feedback channel and the mapping table of feedback channel sign sent to terminal during described pre-configured feedback channel was gathered in the base station.Under this configuration mode, the feedback channel sign that each terminal obtains is identical with the mapping table of feedback channel resources position.
Step S12, unappropriated feedback channel of base station selection together are mapped to the feedback channel of this feedback channel correspondence sign with schedule information and send to terminal in the scheduling channel;
When the base station adopts among the above-mentioned steps S11 first kind of mode to be the corresponding feedback channel set of terminal configuration, a unappropriated feedback channel is chosen in the base station from the set of the feedback channel of terminal correspondence, the feedback channel sign of this feedback channel correspondence together is mapped to schedule information sends to terminal in the scheduling channel;
When the base station adopts among the above-mentioned steps S11 second way to be the corresponding feedback channel set of terminal configuration, a unappropriated feedback channel is chosen in the base station from the set of pre-configured feedback channel, the feedback channel sign of this feedback channel correspondence together is mapped to schedule information sends to terminal in the scheduling channel;
Described base station can send schedule information and the feedback channel indication map at a plurality of terminals at same TTI to same scheduling channel.
Step S13, terminal receive schedule information and the feedback channel sign at self that send the base station from scheduling channel.
Step S14, base station through first Preset Time at interval, send downlink data according to the down physical channel resource location of indicating in the described schedule information to terminal after sending schedule information.
Down physical channel resource location downlink data receiving from the corresponding downstream physical channel that step S15, terminal are indicated according to schedule information.
Step S16, after terminal begins downlink data receiving, through second Preset Time at interval, terminal sends feedback information according to the feedback channel resources position of the feedback channel sign indication that receives to network side, whether the downlink data of having indicated terminal to receive in the described feedback information is correct, and the channel quality that carries the down physical channel of this downlink data.
The feedback information that step S17, base station send according to the resource location receiving terminal of the feedback channel of choosing for terminal, and carry out follow-up scheduling according to the feedback information that receives.
The above-mentioned feedback channel distribution indicating method that is used for LTE technology down direction of the present invention, the feedback channel sign that terminal will be distributed in the base station sends to terminal by scheduling channel, the resource location that the feedback channel that terminal can be known distribute to it takies, make terminal to send feedback information to network side according to the feedback channel resources position of the feedback channel sign indication that receives, thereby solved in the prior art when the base station when same TTI uses same scheduling channel to dispatch a plurality of terminal, the feedback channel collision problem that may occur.
Corresponding to the above-mentioned feedback channel distribution indicating method that is used for LTE technology down direction of the present invention, the present invention goes back and then has proposed a kind of feedback channel distribution indication mechanism of the LTE of being used for technology down direction here, see also Fig. 2, this figure is the composition structured flowchart that the present invention is used for the feedback channel distribution indication mechanism of LTE technology down direction, it mainly comprises feedback channel configuration module 20, schedule information sending module 21, feedback channel indication sending module 22, schedule information receiver module 23, feedback channel indication receiver module 24, downlink data sending module 25, downlink data receiver module 26, feedback information sending module 27 and feedback information receiver module 28, wherein each concrete effect of forming module is as follows:
Feedback channel configuration module 20, be arranged on base station side, connect described feedback information sending module 27 respectively, feedback information receiver module 28 and feedback channel indication sending module 22, when the service of setting up is connected between terminal and network, the corresponding relation of pre-configured feedback channel resources position and feedback channel sign is sent to feedback information sending module 27 respectively, feedback information receiver module 28 and feedback channel indication sending module 22, perhaps be the corresponding feedback channel set of terminal configuration, the corresponding relation that each feedback channel resources position and feedback channel in the set are identified sends to feedback information sending module 27, feedback information receiver module 28 and feedback channel indication sending module 22;
Schedule information sending module 21 is arranged on base station side, is used for that schedule information is mapped to scheduling channel and sends to terminal;
Feedback channel indication sending module 22 is arranged on base station side, connects described feedback channel configuration module 20, is used to terminal to select corresponding feedback channel, and the feedback channel sign of this feedback channel correspondence is mapped to sends to terminal in the scheduling channel;
Schedule information receiver module 23 is arranged on end side, connects described schedule information sending module 21, is used for receiving the schedule information that base station side is sent from scheduling channel;
Feedback channel indication receiver module 24 is arranged on end side, connects described feedback channel indication sending module 22, is used for receiving the feedback channel sign that base station side is sent from scheduling channel;
Downlink data sending module 25 is arranged on base station side, connects described schedule information sending module 21, and the down physical channel resource location that is used for indicating according to schedule information sends downlink data to terminal;
Downlink data receiver module 26, be arranged on end side, connect described downlink data sending module 25, schedule information receiver module 23 and feedback information sending module 27, be used for down physical channel resource location downlink data receiving from the corresponding downstream physical channel of indicating according to schedule information;
Feedback information sending module 27, be arranged on end side, connect described feedback channel indication receiver module 24, feedback channel configuration module 20 and downlink data receiver module 26, send the feedback information of downlink data reception situation according to the feedback channel resources position of the feedback channel sign indication that receives to base station side;
Feedback information receiver module 28, be arranged on network side, connect described feedback channel configuration module 20, feedback information sending module 27 and feedback channel indication sending module 22, according to the feedback information of the resource location receiving terminal transmission of the feedback channel of choosing for terminal.
Other the concrete correlation techniques of indication mechanism of distributing the feedback channel of the LTE technology that the is used for down direction of the above-mentioned proposition of the present invention realize that details please refer to the specific descriptions that correlation technique in the feedback channel distribution indicating method of the above-mentioned LTE of the being used for technology of the present invention realizes details, no longer give too much to give unnecessary details here.
See also Fig. 3, this figure is the flow chart that the present invention is used for the feedback channel distribution indicating method of HSUPA technology, and its main implementation procedure is:
The service of setting up is connected between step S30, network side and the terminal.
The E-HICH set that terminal is used is determined in step S31, base station, and the corresponding relation of the resource location of each E-HICH in the E-HICH of the definite terminal correspondence set and E-HICH sign, send to RNC (Radio Networ Controller then, radio network controller), by RNC notice terminal, perhaps determine E-HICH set and the resource location of each E-HICH in the set and the corresponding relation of E-HICH sign that terminal is used, and send to base station and terminal respectively by RNC.
In the HSUPA technology, the resource location of E-HICH is time slot and the code channel that E-HICH takies.
Can adopt dual mode in the present embodiment is the corresponding feedback channel set of terminal configuration, is illustrated respectively below:
First kind of mode is: the base station is the corresponding E-HICH set of this terminal configuration, and with the resource location of each E-HICH in the E-HICH sign indication set, the mapping table of E-HICH sign and E-HICH resource location is sent to RNC, by high-level signaling this mapping table is sent to terminal by RNC; Be the corresponding E-HICH of this terminal configuration set perhaps, and with the resource location of each E-HICH in the E-HICH sign indication set, the mapping table of E-HICH sign and E-HICH resource location is sent to base station and terminal respectively by RNC;
Wherein the number for E-HICH in the E-HICH set of terminal configuration can be less than or equal to the maximum number that the E-HICH sign can be indicated.
The second way is: be provided with unified E-HICH set in the base station in advance, when the service of foundation connects, the resource location of each E-HICH and the mapping table of E-HICH sign sent to RNC during described pre-configured E-HICH was gathered in the base station, by high-level signaling this mapping table were sent to terminal by RNC; Perhaps be provided with unified E-HICH set among the RNC in advance, set up and serve when connecting, the resource location of each E-HICH and the mapping table of E-HICH sign send to base station and terminal respectively in by RNC described pre-configured E-HICH being gathered.
Step S32, base station choose a unappropriated E-HICH from described E-HICH set, the E-HICH sign of this E-HICH correspondence together is mapped to schedule information sends to terminal among the E-AGCH;
When first kind of mode is the corresponding E-HICH set of terminal configuration in adopting above-mentioned steps S31, a unappropriated E-HICH is chosen in the base station from the E-HICH of terminal correspondence set, the E-HICH sign of this E-HICH correspondence together is mapped to schedule information sends to terminal among the E-AGCH;
When the second way is the corresponding E-HICH set of terminal configuration in adopting above-mentioned steps S31, a unappropriated E-HICH is chosen in the base station from pre-configured E-HICH set, the E-HICH sign of this E-HICH correspondence together is mapped to schedule information sends to terminal among the E-AGCH;
Described base station can send schedule information and the E-HICH indication map at a plurality of terminals at same TTI to same scheduling channel.
Step S33, terminal receive schedule information and the E-HICH sign at self that send the base station from E-AGCH.
Step S34, after schedule information is sent in the base station, through the 3rd Preset Time at interval, terminal sends upstream data according to the resource location of the E-PUCH of described schedule information indication to the base station.
Step S35, base station receive upstream data according to the resource location of schedule information indication from corresponding E-PUCH.
Step S36, base station are carried out wave beam forming according to the arrival bearing of the signal that terminal sends to the feedback information at terminal, and determine that according to the received signal to noise ratio of upstream data terminal sends the channel quality of the E-PUCH that upstream data takies, determine transmitting power with this at the feedback information of terminal.
Step S37, after terminal begins to send upstream data, through the 4th Preset Time at interval, the base station sends the feedback information that passes through wave beam forming according to its E-HICH resource location of choosing and described definite transmitting power to terminal, and whether the upstream data of having indicated the base station to receive in the described feedback information is correct.
Step S38, terminal receive the feedback information that the base station sends according to the resource location of the E-HICH of described E-HICH sign indication.
In the technical line direction of LTE, feedback channel is distributed and the process of indicating and above-mentioned feedback channel in the HSUPA technology distributes and the indication process is similar, see also Fig. 4, this figure is the flow chart that the present invention is used for the feedback channel distribution indicating method of LTE up direction, and its main implementation procedure is:
Step S40, network side are connected with the terminal service of setting up.
Step S41, network side are determined feedback channel set and the mapping relations table that terminal is used, and the resource location of each feedback channel in the feedback channel set of terminal correspondence and the corresponding relation of feedback channel sign are sent to terminal.
At the technical line direction of LTE, the resource location of feedback channel is the subcarrier that feedback channel takies.
Can adopt dual mode in the present embodiment is the corresponding feedback channel set of terminal configuration, is illustrated respectively below:
First kind of mode is: the base station is the set of the corresponding feedback channel of each terminal configuration, and with the resource location of each feedback channel in the feedback channel sign indication set, and the mapping table of feedback channel sign and feedback channel resources position is sent to terminal;
Wherein the number for feedback channel in the feedback channel set of terminal configuration can be less than or equal to the maximum number that the feedback channel sign can be indicated.
The second way is: be provided with unified feedback channel set in the base station in advance, when the service of foundation connected, the resource location of each feedback channel and the mapping table of feedback channel sign sent to terminal during described pre-configured feedback channel was gathered in the base station.
Step S42, base station choose a unappropriated feedback channel from described feedback channel set, the feedback channel sign of this feedback channel correspondence together is mapped to schedule information sends to terminal in the scheduling channel;
When first kind of mode is the corresponding feedback channel set of terminal configuration in adopting above-mentioned steps S41, a unappropriated feedback channel is chosen in the base station from the set of the feedback channel of terminal correspondence, the feedback channel sign of this feedback channel correspondence together is mapped to schedule information sends to terminal in the scheduling channel;
When the second way is the corresponding feedback channel set of terminal configuration in adopting above-mentioned steps S41, a unappropriated feedback channel is chosen in the base station from the set of pre-configured feedback channel, the feedback channel sign of this feedback channel correspondence together is mapped to schedule information sends to terminal in the scheduling channel.
Described base station can send schedule information and the feedback channel indication map at a plurality of terminals at same TTI to same scheduling channel.
Step S43, terminal receive schedule information and the feedback channel sign at self that send the base station from scheduling channel.
Step S44, after schedule information is sent in the base station, through the 5th Preset Time at interval, terminal sends upstream data according to the resource location of the uplink physical channel of described schedule information indication to network side.
Step S45, base station receive upstream data according to the resource location of schedule information indication from corresponding uplink physical channel.
Step S46, base station are carried out wave beam forming according to the arrival bearing of the signal that terminal sends to the feedback information at terminal, and determine that according to the received signal to noise ratio of upstream data terminal sends the channel quality of the uplink physical channel that upstream data takies, determine transmitting power with this at the feedback information of terminal.
Step S47, after terminal begins to send upstream data, through the 6th Preset Time at interval, the base station sends the feedback information that passes through wave beam forming according to its feedback channel resources position of choosing and described definite transmitting power to terminal, and whether the upstream data of having indicated the base station to receive in the described feedback information is correct.
Step S48, terminal receive the feedback information that network side sends according to the resource location of the feedback channel of described feedback channel sign indication.
The present invention is used in the feedback channel distribution indicating method of HSUPA and LTE technology up direction, network side will send to terminal by scheduling channel at the feedback channel sign of terminal, and send feedback information to terminal according to the feedback channel resources position that it is chosen, because the feedback information at each terminal all uses independent scheduling channel to carry, therefore network side only need carry out one time spread processing, thereby reduced implementation complexity, and consistent with the using method of existing system feedback channel, guaranteed equipment compatibility; During the terminal parses feedback information, also only a despreading be need carry out in addition, implementation complexity and power consumption reduced.
Corresponding to the above-mentioned feedback channel distribution indicating method that is used for HSUPA and LTE up direction of the present invention, the present invention goes back and then has proposed the feedback channel distribution indication mechanism of a kind of HSUPA of being used for and LTE up direction here, see also Fig. 5, this figure is the composition structured flowchart that the present invention is used for the feedback channel distribution indication mechanism of HSUPA and LTE up direction, it mainly comprises feedback channel configuration module 50, schedule information sending module 51, feedback channel indication sending module 52, schedule information receiver module 53, feedback channel indication receiver module 54, upstream data sending module 55, upstream data receiver module 56, feedback information sending module 57 and feedback information receiver module 58, wherein respectively form mainly acting as of module:
Feedback channel configuration module 50, be arranged on network side, connect described feedback information sending module 57 respectively, feedback information receiver module 58 and feedback information indication sending module 52, when the service of setting up is connected between terminal and network, the corresponding relation of pre-configured feedback channel resources position and feedback channel sign is sent to feedback information sending module 57 respectively, feedback information receiver module 58 and feedback information indication sending module 52, perhaps be the corresponding feedback channel set of terminal configuration, the corresponding relation that each feedback channel resources position and feedback channel in the set are identified sends to feedback information sending module 57 respectively, feedback information receiver module 58 and feedback information indication sending module 52;
Schedule information sending module 51 is arranged on network side, is used for that schedule information is mapped to scheduling channel and sends to terminal;
Feedback channel indication sending module 52 is arranged on network side, connects described feedback channel configuration module 50, and the feedback channel sign that is used for feedback channel correspondence that network side is selected for use is mapped to scheduling channel and sends to terminal;
Schedule information receiver module 53 is arranged on end side, connects described schedule information sending module 51 and upstream data sending module 55, is used for receiving the schedule information that network side sends from scheduling channel;
Feedback channel indication receiver module 54 is arranged on end side, connects described feedback channel indication sending module 52 and feedback information receiver module 58, is used for receiving the feedback channel sign that network side sends from scheduling channel;
Upstream data sending module 55 is arranged on end side, connects described schedule information receiver module 53, and the uplink physical channel resource location that is used for indicating according to schedule information sends upstream data to network side;
Upstream data receiver module 56, be arranged on network side, connect described upstream data sending module 55, schedule information sending module 51 and feedback information sending module 57, the uplink physical channel resource location that is used for indicating according to schedule information receives upstream data from corresponding uplink physical channel;
Feedback information sending module 57, be arranged on network side, connect described feedback channel configuration module 50, feedback channel indication sending module 52 and upstream data receiver module 56, be used for sending to terminal the feedback information of the situation that receives through the upstream data of wave beam forming and power control and treatment according to the feedback channel resources position of feedback channel sign indication;
Feedback information receiver module 58, be arranged on end side, connect described feedback channel configuration module 50, feedback information sending module 57 and feedback channel indication receiver module 54, the resource location of the feedback channel of the feedback channel sign indication that receives according to feedback channel indication receiver module receives the feedback information that network side sends.
The correlation technique that the feedback channel that is used for HSUPA and LTE up direction of the above-mentioned proposition of the present invention distributes other concrete correlation techniques realization details of indication mechanism to please refer to the feedback channel distribution indicating method of above-mentioned HSUPA of being used for of the present invention and LTE up direction realizes the specific descriptions of details, no longer gives here too much to give unnecessary details.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (16)
1. a feedback channel distribution indicating method is characterized in that, comprises step:
A, network side are mapped to schedule information and feedback channel sign and send to terminal in the scheduling channel, and send downlink data according to the down physical channel resource location of described schedule information indication to terminal;
Down physical channel resource location downlink data receiving from the corresponding downstream physical channel that B, terminal are indicated according to schedule information, and the feedback channel resources position of indicating according to the feedback channel sign sends feedback information to network side;
Wherein, comprising before the steps A: network side sends to terminal with the corresponding relation of feedback channel sign and feedback channel resources position when being connected with the terminal service of setting up.
2. the method for claim 1 is characterized in that, network side is the corresponding feedback channel set of terminal configuration when being connected with the terminal service of setting up, and indicates the resource location of each feedback channel in the set with the feedback channel sign;
Perhaps,
Pre-configured unified feedback channel set comprises the corresponding relation that each feedback channel resources position and feedback channel identify in the described unified feedback channel set.
3. method as claimed in claim 2, it is characterized in that, network side is chosen a unappropriated feedback channel from the set of the feedback channel of terminal correspondence, the feedback channel sign of this feedback channel correspondence together is mapped to schedule information sends to terminal in the scheduling channel.
4. method as claimed in claim 2, it is characterized in that, network side is chosen a unappropriated feedback channel from pre-configured unified feedback channel, the feedback channel of this feedback channel correspondence sign together is mapped to schedule information sends to terminal in the scheduling channel.
5. the method for claim 1 is characterized in that, also comprises step behind the described step B:
Network side is according to the feedback information of the resource location receiving terminal transmission of the feedback channel of choosing for terminal.
6. the method for claim 1 is characterized in that, whether the downlink data of having indicated terminal to receive in the described feedback information is correct, and the channel quality that carries the down physical channel of this downlink data.
7. a feedback channel distributes indication mechanism, comprising:
The schedule information sending module is arranged on network side, is used for that schedule information is mapped to scheduling channel and sends to terminal;
The downlink data sending module is arranged on network side, and the down physical channel resource location that is used for indicating according to schedule information sends downlink data to terminal;
The schedule information receiver module is arranged on end side, is used for receiving the schedule information that network side sends from scheduling channel;
The downlink data receiver module is arranged on end side, is used for down physical channel resource location downlink data receiving from the corresponding downstream physical channel of indicating according to schedule information;
It is characterized in that, also comprise:
The feedback channel configuration module, be arranged on network side, when being connected with the terminal service of setting up, the corresponding relation of pre-configured feedback channel resources position and feedback channel sign is sent to feedback information sending module, feedback information receiver module and feedback channel indication sending module respectively, perhaps be the corresponding feedback channel set of terminal configuration, the corresponding relation that each feedback channel resources position and feedback channel in the set are identified sends to feedback information sending module, feedback information receiver module and feedback channel indication sending module respectively;
Feedback channel indication sending module is arranged on network side, is used to terminal to select corresponding feedback channel, and the feedback channel sign of this feedback channel correspondence is mapped to sends to terminal in the scheduling channel;
Feedback channel indication receiver module is arranged on end side, is used for receiving the feedback channel sign that network side sends from scheduling channel;
The feedback information sending module is arranged on end side, sends the feedback information of downlink data reception situation to network side according to the feedback channel resources position of the feedback channel sign indication that receives;
The feedback information receiver module is arranged on network side, the feedback information that sends according to the resource location receiving terminal of the feedback channel of choosing for terminal.
8. a feedback channel distribution indicating method is characterized in that, comprises step:
A, network side are mapped to schedule information and feedback channel sign and send to terminal in the scheduling channel;
B, terminal send upstream data according to the uplink physical channel resource location of described schedule information indication to network side;
C, network side receive upstream data according to the resource location of described schedule information indication from corresponding uplink physical channel, the feedback channel resources position of indicating according to the feedback channel sign sends feedback information to terminal;
Wherein, before steps A, comprise: when the service of setting up of network side and terminal is connected, the corresponding relation of feedback channel sign and feedback channel resources position is sent to terminal.
9. method as claimed in claim 8 is characterized in that, network side is the corresponding feedback channel set of terminal configuration when being connected with the terminal service of setting up, and indicates the resource location of each feedback channel in the set with the feedback channel sign;
Perhaps,
Pre-configured unified feedback channel set comprises the corresponding relation that each feedback channel resources position and feedback channel identify in the described unified feedback channel set.
10. method as claimed in claim 9, it is characterized in that, network side is chosen a unappropriated feedback channel from the set of the feedback channel of terminal correspondence, the feedback channel sign of this feedback channel correspondence together is mapped to schedule information sends to terminal in the scheduling channel.
11. method as claimed in claim 9, it is characterized in that, network side is chosen a unappropriated feedback channel from pre-configured unified feedback channel, the feedback channel of this feedback channel correspondence sign together is mapped to schedule information sends to terminal in the scheduling channel.
12. method as claimed in claim 8 is characterized in that, described step C specifically comprises step:
C1, network side receive upstream data according to the resource location of schedule information indication from corresponding uplink physical channel, and the arrival bearing of the signal that sends according to terminal carries out wave beam forming to the feedback information at terminal, and determines transmitting power at the feedback information of terminal according to the channel quality of the uplink physical channel of carrying upstream data;
C2, network side identify the feedback channel resources position of indication and described definite transmitting power sends feedback information from the process wave beam forming to terminal according to feedback channel.
13. method as claimed in claim 12 is characterized in that, network side is determined the channel quality of the uplink physical channel that terminal transmission upstream data takies according to the received signal to noise ratio of upstream data.
14. method as claimed in claim 8 is characterized in that, also comprises step behind the described step C:
Terminal receives the feedback information that network side sends according to the resource location of the feedback channel of described feedback channel sign indication.
15. method as claimed in claim 8 is characterized in that, whether the upstream data of having indicated network side to receive in the described feedback information is correct.
16. a feedback channel distributes indication mechanism, comprising:
The feedback channel configuration module, be arranged on network side, when being connected with the terminal service of setting up, the corresponding relation of pre-configured feedback channel resources position and feedback channel sign is sent to the feedback information sending module, feedback information receiver module and feedback channel indication sending module, it perhaps is the corresponding feedback channel set of terminal configuration, the corresponding relation of each feedback channel resources position and feedback channel sign in the set is sent to the feedback information sending module, feedback information receiver module and feedback channel indication sending module;
The schedule information sending module is arranged on network side, is used for that schedule information is mapped to scheduling channel and sends to terminal;
The schedule information receiver module is arranged on end side, is used for receiving the schedule information that network side sends from scheduling channel;
The upstream data sending module is arranged on end side, and the uplink physical channel resource location that is used for indicating according to schedule information sends upstream data to network side;
The upstream data receiver module is arranged on network side, and the uplink physical channel resource location that is used for indicating according to schedule information receives upstream data from corresponding uplink physical channel;
It is characterized in that, also comprise:
Feedback channel indication sending module is arranged on network side, and the feedback channel sign that is used for feedback channel correspondence that network side is selected for use is mapped to scheduling channel and sends to terminal;
Feedback channel indication receiver module is arranged on end side, is used for receiving the feedback channel sign that network side sends from scheduling channel;
The feedback information sending module is arranged on network side, and the feedback channel resources position of indicating according to the feedback channel sign sends feedback information to terminal;
The feedback information receiver module is arranged on end side, and the resource location of the feedback channel of the feedback channel sign indication that receives according to feedback channel indication receiver module receives the feedback information that network side sends.
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