CN1383636A - Method and appts. for transmitting data rate control information in mobile telecommunication system for packet data transmission - Google Patents
Method and appts. for transmitting data rate control information in mobile telecommunication system for packet data transmission Download PDFInfo
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- CN1383636A CN1383636A CN01801772A CN01801772A CN1383636A CN 1383636 A CN1383636 A CN 1383636A CN 01801772 A CN01801772 A CN 01801772A CN 01801772 A CN01801772 A CN 01801772A CN 1383636 A CN1383636 A CN 1383636A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0025—Transmission of mode-switching indication
Abstract
There is provided a method and apparatus for transmitting/receiving data rate control (DRC) information in a mobile telecommunication system for transmitting packet data. To determine a data rate on the forward link in a mobile telecommunication system such as an HDR system, DRC information is transmitted on the reverse link only in time for scheduling user data. An access network (AN) transmits a DRC request indicator (DRI) bit or an access terminal (AT) detects preambles of all users or its own preamble in order to control transmission of the DRC information. Along with the DRC information transmission control, some ATs are controlled to transmit pilot channels and RRI channels at different time points from other ATs. Therefore, interference load on the reverse link is reduced and the system capacity of the reverse link is increased.
Description
Background of invention
1. invention field
The present invention relates generally to be used for the mobile communication system that grouped data sends, and be particularly related to the method and apparatus that is used to send data rate control (DRC) information.
2. description of related art
High data rate in CDMA (code division multiple access) mobile communication system is sent (or grouped data transmission) carried out research energetically.Main mobile communication system with the channel architecture that is suitable for the two-forty transmission is said HDR (high data rate) system by 3GPP2 (third generation collaborative project 2) organizational standardization, in order to strengthen the data communication in the IS-2000 system.
The HDR system adopts link adaptation scheme, wherein by adapting to a bit rate and being modulated to channel status control data speed.In the HDR system, the pilot channel on the forward link, MAC (media interviews control) channel, Traffic Channel and control channel carried out Time Division Multiplexing before sending.By making up three kinds of modulation QPSK (Quadrature Phase Shift Keying, quaternary PSK), 8PSK (8 phase-shift keyings, 8-ary Phase Shift Keying), 16QAM (16 phase-shift keyings, 16-ary QuadratureAmplitude Modulation), three kinds of code checks 1/4,3/8 and 1/2, with the timeslot number that grouping sends, utilize the forward traffic channel of link adaptation to send with data rate in 13.
(access terminal accesses terminal, AT) Carrier interference ratio (C/I) of the measurement Forward Pilot Channel that (activation group sector) receives from 8 effective sectors, estimate channel status, ask the data rate and a sector of the forward traffic channel of the access network (AN) on the DRC channel then, described accessing terminal with the reception data from this sector.DRC information comprises the data-rate information of 4 DRC symbols and the cell selecting information of 3 position indexes, determines 8 quadratures (Walsh) sign indicating number by 3 position indexes.
Fig. 1 shows the relation between the backward channel in typical HDR system.Show the hole pattern of pilot channel, DRC channel and RRI (Reverse Rate Indicatior, the reverse rate) channel on reverse link herein.
In Fig. 1, the data rate of RRI channel indication reverse traffic channel, and the DRC channel sends DRC information as previously mentioned to AN.Each of the DRC information that sends on the DRC channel is once retransmitted, and expands with 8 walsh codes of a sector of indication.The gained result expands with 4 walsh codes then.Therefore, the DRC symbol has 512 chips altogether, and retransmits self once, makes 1024 chips be filled on the DRC channel.After pattern middle punch shown in Figure 1, the DRC chip is divided into 16 64 chip TDM time slots, and sends TDM with pilot channel and RRI channel.In case the AT on the DRC channel in the sector receives data rate, AN is according to grouped data amount and each user's requested data rates dispatch user data, and selects to receive the AT of a packet in next time slot.AN sends packet with the data rate of asking to the AT that selects in a grouping time period that begins from next time slot.
Fig. 2 is illustrated in the typical HDR system length according to the packet of the data rate on the forward link.
With reference to Fig. 2, forward traffic channel sends the grouping of different length according to the data rate of AT request.After sending a grouping, AN is chosen in an AT who serves in the next time slot on forward traffic channel, and determines a data rate, and the DRC information that receives based on the AT in the sector sends to AT with this data rate with data.AN begins to send a preamble each grouping, and notification target AT receives the length of grouping and grouping.Preamble with multiply each other corresponding to the walsh code of the MAC index of distributing to AT, and determine the repeating transmission number of times of preamble according to the data rate of grouping.Table 1 shown in following has been listed with respect to the preamble of data rate and has been retransmitted and the preamble number of chips.
(table 1)
| Data rate | Preamble is retransmitted | Number of chips |
| 38.4kbps | ?32 | ?1024 |
| 76.8kbps | ?16 | ?512 |
| 102.4kbps | ?12 | ?384 |
| 153.6kbps | ?8 | ?256 |
| 204.8kbps | ?6 | ?192 |
| 307.2kbps | ?4 | ?128 |
| 614.4kbps | ?2 | ?64 |
| 921.6kbps | ?2 | ?64 |
| 1228.8kbps | ?2 | ?64 |
| 1834.2kbps | ?2 | ?64 |
| 2457.6kbps | ?2 | ?64 |
As mentioned above, send on the forward link in the HDR system after the grouping, AN is with reference to the DRC message scheduling user grouping data that just received from AT before grouping sends.Notice that at this DRC information is to send in each time slot on reverse link.Although DRC information is unwanted when not dispatching, DRC information sends on the DRC channel continuously.This means to take reverse link resources continuously, reduced the power system capacity of reverse link thus.When data sent with low data rate (for example, 38.4kbps among Fig. 2 and 76.8kbps) on the forward link, problem worsened.Because use when DRC information was only dispatched before all sending a grouping, other out of season DRC information that is used to dispatch is useless.Therefore, when data send with low data rate, this means to have sent long grouping, promptly used more multi-slot, for the timeslot number that sends unnecessary DRC information use has increased.The continuous transmission of DRC channel has seriously increased the disturbance load on the reverse link.Correspondingly,, disconnect the transmission of DRC channel, then reduced interference, and the power system capacity on reverse link increases if when not needing DRC information.
The invention summary
Therefore, the purpose of this invention is to provide a kind of method and apparatus, have only when in mobile communication system, needing to dispatch, just on reverse link, send the DRC information of the data rate that is used for definite forward link as the HDR system.
Another object of the present invention provides a kind of method and apparatus that reduces the disturbance load on the reverse link in the mobile communication system of picture HDR system.
Another object of the present invention provides a kind of method and apparatus that increases the power system capacity of reverse link in the mobile communication system of picture HDR system.
Another object of the present invention provides a kind of method and apparatus that reduces the disturbance load on the non-transmitting time section of DRC information reverse link in the mobile communication system of picture HDR system.
Aforementioned and other purpose of the present invention realizes by a kind of method and apparatus that is used to send/receive DRC information in the mobile communication system that sends grouped data is provided.In order to determine the data rate on the forward link in such as the mobile communication system of HDR system, only when dispatch user data, Cai on reverse link, send DRC information.AN sends preamble or its own preamble that DRI position or AT detect all users, so that control the transmission of DRC information.Send control with DRC information, control some AT, to send pilot channel and RRI channel at the time point different with other AT.Therefore, disturbance load on the reverse link and the power system capacity that has increased reverse link have been reduced.
The accompanying drawing summary
From detailed description with reference to the accompanying drawings, above and other objects of the present invention, feature and advantage will become clearer.
Fig. 1 is illustrated in the typical HDR system, the hole pattern of pilot channel, DRC channel and RRI channel on reverse link;
Fig. 2 is illustrated in the typical HDR system, on the forward link with respect to the data packet length of data rate;
The DRC channel that Fig. 3 is illustrated in according to the embodiment of the invention sends in the control operation, the time slot transmission/reception relation between forward link and the reverse link;
Fig. 4 is the flow chart that sends control operation according to the DRC channel of the embodiment of the invention;
Fig. 5 is the block diagram according to the AN transmitter of the embodiment of the invention;
Fig. 6 is the block diagram according to the AT transmitter of the embodiment of the invention;
The DRC channel that Fig. 7 is illustrated in according to another embodiment of the present invention sends in the control operation, the time slot transmission/reception relation between forward link and the reverse link;
Fig. 8 is the flow chart that sends control operation according to the DRC channel of second embodiment of the invention;
Fig. 9 is the block diagram according to the AT transmitter of second embodiment of the invention;
Figure 10 sends in the control operation at the DRC channel according to third embodiment of the invention, the time slot transmission/reception relation between forward link and the reverse link;
Figure 11 is the flow chart that sends control operation according to the DRC channel of third embodiment of the invention;
Figure 12 is the block diagram according to the AT transmitter of third embodiment of the invention;
Figure 13 A, 13B and 13C illustrate according to the DRC channel non-transmitting time section pilot channel of fourth embodiment of the invention and the transmission of RRI channel.
Detailed description of preferred embodiment
The preferred embodiments of the present invention are described below with reference to accompanying drawings.In the following description, known function or structure are not described in detail, because the fuzzy easily the present invention of unnecessary details.
Explanation be the invention provides a kind ofly be used to have only when needs are dispatched in the mobile communication system of picture HDR system, ability sends DRC on reverse link, be used for the apparatus and method of the data rate of definite forward link.That is, when AN planned to send another grouping in a HDR system, AT just sent DRC information before last grouping all sends.According to the present invention, at first when decision sends DRC information, and only sends DRC information in the time that is determined.Pilot channel sends at different time points according to the user with the RRI channel, when not sending with convenient DRC information, reduces the interference load on the reverse link.Whether decision will send DRC information and send and will be described in embodiment 1 to embodiment 3 based on the selectivity of the DRC information of determination result at current point in time.Embodiment 4 has comprised embodiment 1 to embodiment 3, provides by sending pilot channel and RRI channel according to the user in different time points, reduces the method for the interference load on reverse link.
The DRC channel that Fig. 3 shows according to first embodiment of the invention sends in the control operation, the time slot transmission/reception relation between forward link and the reverse link.This embodiment is characterised in that, introduces DRI (DRC bid indicator) position control DRC channel.Although the following example is described at the data rate of 76.8kbps, it only is an example application.Be that first embodiment can be used for any data rate significantly.
With reference to Fig. 3, whether it need receive reverse DRC channel to AN by notifying all AT, and control is from the transmission of the DRC channel of all AT.AN sends information with the DRI position on the MAC channel.The DRI position indicates whether to need DRC information to be used for scheduling after a slot time section of being scheduled to.When the predetermined time slot time period stops the transmission of forward packet, need DRC information, and AN must select next AT and data rate.If stop the transmission of forward packet at predetermined time slot, the DRI position is set to 1, and if the transmission of current forward packet when continuing, the DRI position is set to 0.If AN asks DRC information at predetermined time slot in the time period, and receive information requested, then the data rate of its definite next grouping that will send.Suppose AN in having the first transmitting time section of a plurality of time slots, send one be grouped into AT in, send a new grouping second transmitting time section, AN carries out a scheduling to determine receiving the AT of new grouping and at the back data rate that is used to divide into groups in half of the last time slot of the first transmitting time section in the second transmitting time section.For this reason, AN sends the DRI position of request DRC information at the predetermined time slot of the first transmitting time section to AT.Predetermined time slot is positioned at least two time slots before the last time slot.Preferably, predetermined time slot is second time slot from last time slot.Considering that one is grouped under the situation about sending fully in the time slot of the second transmitting time section, predetermined time slot can be represented from preceding two time slots of last time slot and last time slot.For example, if last time slot is the 16th time slot, predetermined time slot is the 14th time slot or the 14th, 15 and 16 time slots.When needs, predetermined time slot can be set to different values.
Fig. 4 is the flow chart that sends control operation according to the DRC channel of first embodiment of the invention.This is a kind of by the algorithm of DRI position control from the DRC channel transmission of AT.
With reference to Fig. 4, in step 401, AT reads the DRI position from forward direction MAC channel signal, and check DRI position is 1 or 0 in step 402.If the DRI position is 1, in step 403, AT measures the pilot tone CI of each effective sector (activation group sector), in step 404, determine in step 405, to convert the highest C/I to corresponding D RC symbol corresponding to the sector of the highest C/I, and in step 406, the DRC symbol is sent to AN.In step 407, AT receives next time slot, and turns back to step 401, and as is known, the DRC symbol transition is carried out by C/I being mapped to corresponding D RC symbol.
On the other hand, if the DRI position is 0 in step 402, AT jumps to step 407.
Return Fig. 3, the DRI position in n forward direction time slot is controlled at the DRC channel in (n+1) reverse time slot.The DRC channel arrives in (n+2) time slot, and is that (n+3) forward direction time slot is determined a data rate.DRC information must be at three time slots before current group all sends in the first transmitting time section, promptly, be requested at second time slot from the last time slot of the first transmitting time section, make it possible in time receive DRC information and be used for scheduling, with the data rate of the new grouping determining in the second transmitting time section, will send.Therefore, three time slots before grouping sends termination, AN send and are set to 1 DRI position, and at other time slot, send and be set to 0 DRI position.If a grouping is that N time slot is long, the DRC channel need not send at (N-3) time slot.The ratio of total timeslot number is (N-3)/N in timeslot number that non-DRC channel sends and the grouping.Table 2 shows with respect to data rate, the timeslot number that non-DRC channel sends and the ratio of time slot sum.If block length is three time slots or still less, in all time slots, send the DRC channel.The interference load that is caused by the transmission of DRC channel in the slot time section can reduce at 153.6kbps or lower data rate and at 307.2kbps (long grouping).
(table 2)
| Data rate | The time slot of each grouping | The time slot (%) that non-DRC channel sends |
| 38.4kbps | ?16 | ?81.25 |
| 76.8kbps | ?8 | ?62.5 |
| 102.4kbps | ?6 | ?50 |
| 153.6kbps it is short | ?4 | ?25 |
| 153.6kbps it is long | ?16 | ?81.25 |
| 204.8kbps | ?3 | ?0 |
| 307.2kbps it is short | ?2 | ?0 |
| 307.2kbps it is long | ?8 | ?62.5 |
| 614.4kbps | ?1 | ?0 |
| 921.6kbps | ?2 | ?0 |
| 1228.8kbps | ?1 | ?0 |
| ?1843.2kps | ?1 | ?0 |
| ?2457.6kps | ?1 | ?0 |
Fig. 5 is the block diagram according to the AN transmitter of first embodiment of the invention.Transmitter is characterised in that has introduced the DRI position.
With reference to Fig. 5, Traffic Channel is encoded in encoder 501, in modulator 502 according to data rate with QPSK, 8PSK or 16QAM modulate, and interweave in interleaver 503.In perforator and interleaver 504, the traffic channel signal that interweaves is perforated and retransmits according to data rate.Demultiplexer (DEMUX) 505 is exported 16 continuous retransmission signal bits on 16 parallel channels.16 walsh codes of Walsh capping unit 506 usefulness carry out Walsh to 16 channels and cover, and Walsh chip level adder 507 will be carried out addition to the channel data that Walsh covers with the chip level.In preamble repeater 511, retransmit preamble, and in Walsh expander 512, expand with the walsh code of distributing to the reverse power control channel according to data rate.Multiplexer (MUX) 513 is positioned at the mode that begins to locate of Traffic Channel with preamble, carries out multiplexed to the output of Walsh chip level adder 507 and the expansion preamble that receives from Walsh expander 512.
Now, the detailed description of the transmitter architecture that DRI position related to the present invention is associated will be provided.Pilot channel, FA (forward direction is effective) position or FAB and RA (oppositely effectively) position or RAB multiply each other with walsh code # 0, #1 and #2 respectively, and send on forward direction MAC channel.Other 29 walsh codes multiplied each other with reverse power control (RPC) position that is used for the user before sending.Distribute to one of 29 walsh codes of RPC position, can divide the transmission that is used in the DRI position.For example, walsh code # 3 can distribute to the DRI position.According to the structure of AN transmitter of the present invention, the FA position is retransmitted (taking place 16 times) 15 times in repeater 521, and multiplies each other with walsh code # 1 in multiplier 522.A RA position takes place in repeater 531 and the as many number of times of the RAB length factor, and multiplies each other with walsh code # 2 in multiplier 532.DRI position and walsh code # 3 multiply each other in multiplier 541.The gain of RPC Walsh channel gain controller 551 control RPC channels, and multiplier 552 will be multiplied each other with other walsh code respectively by the RPC position of gain controlling.Walsh chip level adder 553 will be with the chip level to carrying out addition from multiplier 533,532,541 and 552 signals that receive.Addition takes place 4 times in MAC channel repeater 554, and sends before second pilot pulse of half-and-half dividing each time slot and afterwards.Pilot frequency channel signal and walsh code # 0 multiply each other in multiplier 561.The 2nd MUX562 connects the output of a MUX513, the output of MAC channel repeater 554 and the output of multiplier 561, as shown in Figure 5.The output of the 2nd MUX562 is carried out multiple expansion in multiple expander 563, and filtering in baseband filter 564 before transmission.
Fig. 6 is the block diagram according to the AT transmitter of first embodiment of the invention.This transmitter also has the feature of having introduced the DRI position.To omit, only describe in detail below and determine whether and to send the structure of the relevant AT transmitter of a DRC symbol according to relating to DRI of the present invention position to being used for receiving the description of the AT receiver of DRI position related to the present invention from AN.
With reference to Fig. 6, pilot channel and walsh code # 0 multiply each other in multiplier 601.The RRI channel is modulated to 8 Walsh symbols in 8 quadrature modulators 611, retransmit 63 times in Walsh symbol repeater 612, and multiply each other with walsh code # 0 in multiplier 613.If the DRI position is 0, MUX631 is by the DRC symbol, and if the DRI position be 1, its blocking-up DRC symbol.That is, MUX631 plays selector, is used for selecting the DRC symbol according to the DRI position.The DRC symbol by block encoding, and is retransmitted coded word in repeater 633 in block encoder 632.The output of repeater 633 is multiplied each other with walsh code in a series of multipliers 634,635 and 636.It is multiplexed that MUX637 carries out TDM with spread signal and pilot signal and RRI.
Traffic Channel is encoded in encoder 641, interweaves in interleaver 642 and multiplies each other with data channel power gain in gain multiplier (gain controller) 643.The output of multiplier 643 is multiplied each other with walsh code # 2 in multiplier 644.The output of MUX637 and multiplier 644 outputs to homophase (I) branch road and quadrature (Q) branch road respectively.I branch road and Q branch road are expanded in multiple expander 645, and filtering in baseband filter 646 before sending.
Fig. 7 illustrates according to the relation in the forward link of second embodiment of the invention and the time slot transmission/reception between the reverse link.In a second embodiment, by the preamble of all AT in the coverage that allows AT search AN, the transmission of control DRC channel.According to second embodiment, AT determines to transmit with AN the AT of grouped data by the preamble that detects all AT, and sends DRC information in the predetermined time slot time period before grouped data all sends.
If each AT also searches for the preamble of other AT, it can find the length of current forward packet.So AT did not send its DRC channel before the needs scheduling.That is, whether each AT checks its DRC channel will send, the result, and only when scheduling, it sends the DRC channel.Control the transmission of DRC channel in this kind mode.As previously mentioned, according to the MAX index of distributing to AT, a preamble and a walsh code multiply each other, and according to data rate, the length of grouping is variable.Therefore, each AT measures energy by using corresponding to the walsh code of the MAX index of distributing to all AT preamble of decoding, and energy that compares and measures and the preamble shown in the table 1 are retransmitted number of times, thus, find out the length of current group, and the terminal time slot of the initial sum of positioning packet.After first pilot pulse in receiving the n time slot, the DRC channel sends the DRC information of corresponding (n+2) time slot.Therefore, two time slots of AT before the terminal time slot of grouping send the DRC channel.Because get the length that a time slot is known grouping after the initial time slot in location, AT also sends the DRC channel in initial time slot.Therefore, the timeslot number that does not need to send is (N-3), and the ratio that divides into groups of the timeslot number that sends of non-DRC channel and N time slot is as first
Among the embodiment (N-3)/N.
Fig. 8 is the DRC channel transmission control operation flow chart according to second embodiment of the invention.
With reference to Fig. 8, in step 801, AT searches for the preamble of all AT, and the length of definite current group.That is, each AT in the AN service area mainly is that the walsh code of distributing to AT multiplies each other by preamble and a plurality of predetermined orthogonal code that will receive, and determines to receive from AN the AT of grouping, and detects the length of grouping from preamble.In step 802, AT determines whether current group will stop in two time slots.If current group stops in two time slots, AT measures the pilot tone C/I of effective sector (effectively organizing the sector) in step 803, and in step 804, determines the highest C/I and corresponding to the sector of the highest C/I.In step 805, it is corresponding D RC symbol that AT changes determined C/I, and sends the DRC symbol to AN in step 806.On the other hand, if current group does not stop in two time slots in step 802, omited steps 803 to 807.
Send in case stop grouping in step 807, AT turns back to step 801, searches for the preamble of all AT, and reads the length of next grouping.Do not send if finish grouping in step 807, AT receives next time slot in step 808, and turns back to step 802.In step 802, whether AT check current group will stop in two time slots in the receiving slot.
Fig. 9 is the block diagram according to the AT transmitter of second embodiment of the invention.The AT transmitter is characterised in that the preamble of all AT of search is used for the control of DRC channel.Identical shown in the structure of the AN transmitter relevant and Fig. 6 with pilot channel, RRI channel and Traffic Channel.Therefore, only to whether decision sends the relevant transmitter architecture of DRC symbol and is described according to the preamble of all AT.
With reference to Fig. 9, when receiving preamble, preamble buffer 901 is stored it.Walsh code generator 902 produces the walsh code of all AT in the sector.Preamble and walsh code that multiplier 903 will be stored in the buffer 901 multiply each other.Accumulator 904 adds up the product that receives from multiplier 903 and energy detector 905 from the accumulation result detected energy.Block length detector 906 detects block length from the output of energy detector 905.Owing to can know the cycle that the DRC symbol sends that is suitable for from block length, DRC controller 907 control MUX921 are optionally to send the DRC symbol as shown in Figure 7.DRC controller 907 control MUX921, two time slots before grouping is sent completely pass through the DRC symbol, and at other time slot blocking-up DRC symbol.That is, if the length of grouping is shorter than three time slots, at the free DRC symbol that sends of institute.
An AT in a plurality of AT is comprising under the situation of the first transmitting time Duan Zhongcong AN receiving block data of a plurality of time slots, send the DRC symbol in the time slot of the predetermined time slot of AT before finishing (two time slots before the last time slot), be used for the data rate of the grouped data of the second transmitting time section transmission after the first transmitting time section with request since the first transmitting time section.Can in the first transmitting time section, from the AT of AN receiving block data and in the first transmitting time section, not carry out this operation among the AT of receiving block data.Promptly, if the terminal at the first transmitting time Duan Zhongcong AN receiving block data is first group, and it is being not second group from the terminal of AN receiving block data in the first transmitting time section, in the predetermined time slot before the grouped data that is accomplished to first group sends, second group sends the DRC symbol to AN.In the predetermined time slot before finishing the grouped data transmission, first group also sends the DRC symbol to AN.
Figure 10 shows at the DRC channel according to third embodiment of the invention and sends in the control operation, the relation in the time slot transmission/reception between forward link and the reverse link.In this embodiment, the DRC channel of the AT that receives current forward channel is controlled.
With reference to Figure 10, to receive the DRC channel of AT of grouping from AN controlled owing to have only in the third embodiment of the present invention, compares with second embodiment, do not need to be used to detect the detector of the preamble of other AT.The AT that distributes to current forward traffic channel can detect block length by searching for the preamble of this AT, and the terminal time slot of the initial sum of positioning packet.This AT can also find out a time cycle, and wherein the scheduling time before this grouping of whole transmissions just needs DRC information.As in a second embodiment, the DRC channel is at the initial time slot of grouping and send in latter two time slot.
Figure 11 sends the control operation flow chart according to the DRC channel of third embodiment of the invention, and the DRC channel of AT that wherein receives forward traffic channel is controlled.
With reference to Figure 11, in step 1101, the preamble that the AT search sends from AN, and in step 1102, determine whether it has received a grouping.In case receive a grouping, in step 1103, AT determines whether that this grouping will stop in two time slots.If in step 1104, AT measures the pilot tone C/I of effective sector; In step 1105, determine the highest C/I and, in step 1106, the highest C/I is mapped to corresponding DRC symbol corresponding to this sector of the highest C/I; And in step 1107, the DRC symbol is sent to AN.On the other hand, if divide into groups in step 1103 and will not stop in two time slots, AT jumps to step 1108.Send if finish grouping in step 1108, AT receives next time slot in step 1109.Then, in step 1103, AT judges that whether current group will stop, and according to result of determination, determine whether the channel with transmission DRC in two time slots in the new time slot.
Figure 12 is the block diagram according to the AT transmitter of third party's block diagram of the present invention.This AT transmitter is characterised in that the DRC channel of the AT that receives current forward traffic channel is controlled.Because the transmitter architecture relevant identical with shown in Fig. 6 with pilot channel, RRI channel and Traffic Channel, detailed description and determine whether to send the relevant transmitter architecture of DRC symbol only.
With reference to Figure 12, Precode detector 1201 detects the preamble that sends to AT.Block length detector 1202 detects block length from preamble.Can learn from block length that owing to must send the time period of DRC symbol as shown in figure 10, DRC controller 1203 is controlled two time slots of MUX1221 before stopping the grouping transmission by the DRC symbol, and blocks the DRC symbol in other time slot.That is,, then free by the DRC symbol in institute if block length is shorter than 3 time slots.
In first and second embodiment, reduce interference load by the DRC channel of controlling all AT.Yet, because DRC channel and pilot channel and RRI channel send with the time-division, even do not send the DRC channel, from user's pilot channel and RRI channel also in identical time point transmission.As a result, when sending pilot tone and RRI channel from the user, do not reduce interference load.Therefore, if in the non-transmitting time section of DRC, send pilot channel and RRI channel according to the user in different time points, interference load equably can distribute.This is the basic thought of embodiment 4.
Figure 13 A, 13B and 13C illustrate the transmission pilot channel of the non-transmitting time section of corresponding DRC and the time point of RRI channel.
With reference to Figure 13 A, 13B and 13C, all AT are grouped into the group of distributing to idol numbering MAC index and strange numbering MAC index, to send their pilot tone and RRI channel in different time points.AT can divide into groups in a different manner.Strange numbering MAC index-group sends pilot tone and RRI channel in strange code T DM time slot, shown in Figure 13 B, and idol numbering MAC index-group sends pilot tone and RRI channel in even code T DM time slot, shown in Figure 13 C.The equal distribution of the interference load that produces causes the increase of reverse link system capacity.Promptly, if a plurality of AT (for example are divided into first group, strange numbering group) and second group (for example, idol numbering group), first group of terminal at first group of time slot (for example, strange numbering time slot) pilot signal transmitted and RRI channel in, and second group of terminal is at second group of time slot (for example, idol numbering time slot) pilot signal transmitted and RRI channel.
Aforesaid operations can be carried out independently, or combines execution with first to the 3rd embodiment respectively.
According to the invention described above, the transmission of control DRC channel only makes in the HDR system to send DRC information on reverse link when needs.Therefore, reduce the interference load on reverse link, and increased the power system capacity of reverse link.In addition,, send pilot channel and RRI channel according to the user, further reduced the interference load that the non-transmitting time section of DRC produces thus at different time points for the non-transmitting time section of DRC.
Although with reference to some embodiments of the present invention it is showed and describe, they only are exemplary application.Though these embodiment are described with reference to the HDR system, they may be used on sending any telecommunication system of grouped data and DRC information.These embodiment also are not limited to walsh code.Therefore, it will be understood by those skilled in the art that the various variations that to carry out on form and the details, and do not break away from the spirit and scope of the invention of claims definition.
Claims (42)
1, a kind of first transmitting time section in access terminal (AT) of mobile communication system with a plurality of time slots send data rate control (DRC) information to the access network (AN) that sends grouped data in case request will be the first transmitting time section after the second transmitting time section by the method for the data rate of the grouped data of this AN transmission, comprise step:
Receive DRC bid indicator (DRI) position in the predetermined time slot before the last time slot of the first transmitting time section; With
In response to this DRI position, produce described DRC information, and send DRC information to AN.
2, the method for claim 1, wherein described predetermined time slot is at least two time slots before the last time slot.
3, method as claimed in claim 2, wherein, described predetermined time slot is from first time slot of last time slot and last time slot.
4, a kind of accessing terminal (AT), be used at the data rate of mobile communication system according to a request, the first transmitting time section with a plurality of time slots send data rate control (DRC) information to the access network (AN) that sends grouped data in case request will be the first transmitting time section after the second transmitting time section by the data rate of the grouped data of this AN transmission, comprise step:
Receiver receives DRC bid indicator (DRI) position in the predetermined time slot before the last time slot of the first transmitting time section; With
Transmitter optionally sends DRC information to AN according to this DRI position.
5, AT as claimed in claim 4, wherein, described predetermined time slot is at least two time slots before the last time slot.
6, AT as claimed in claim 4, wherein, described predetermined time slot is represented from preceding two time slots of last time slot and last time slot.
7, AT as claimed in claim 4, wherein, described transmitter comprises: selector is used to receive DRC information and optionally exports DRC information according to the DRI position; And expander, be used for the output that predetermined orthogonal code is expanded this selector.
8, a kind of method of transmission of data rate control (DRC) information of in mobile communication system, controlling access terminal (AT), the data rate of grouped data in the described request access network (AN) that accesses terminal, described access network sends grouped data with the data rate of request, comprises step:
When the very first time, section AN sent packet data to AT, check had the last time slot of the first transmitting time section of a plurality of time slots; With
In the end send DRC bid indicator (DRI) position in the predetermined time slot before the time slot to AT, with the DRC information of second transmitting time section use that will be the first transmitting time section after to the AT request.
9, method as claimed in claim 8, wherein, described predetermined time slot is at least two time slots before the last time slot.
10, method as claimed in claim 8, wherein, described predetermined time slot is represented from preceding two time slots of last time slot and last time slot.
11, a kind of access network (AN) is used for sending packet data to access terminal (AT) at mobile communication system with requested data rate, and controls the transmission from the DRC information of described AT, and the data rate of described AT request grouped data comprises:
Controller, when the first transmitting time section AN sent packet data to AT, check had the last time slot of the first transmitting time section of a plurality of time slots; With
Transmitter in the end sends DRC bid indicator (DRI) position to AT in the predetermined time slot before the time slot, with the DRC information of second transmitting time section use that will be the first transmitting time section after to the AT request.
12, AN as claimed in claim 11, wherein, described predetermined time slot is at least two time slots before the last time slot.
13, AN as claimed in claim 11, wherein, described predetermined time slot is represented from preceding two time slots of last time slot and last time slot.
14, AN as claimed in claim 11 further comprises: expander is used for expanding described DRI position with predetermined orthogonal code.
15, a kind of mobile communication system comprises:
Access network (AN) is used for the data rate according to a request, sends grouped data in the first transmitting time section with a plurality of time slots, and sends DRC bid indicator (DRI) position in the predetermined time slot before the last time slot of the first transmitting time section; With
Access terminal (AT), be used for according to described DRI position, optionally sending data rate control (DRC) information to AN, with request will be the first transmitting time section after the data rate of grouped data of second transmitting time section reception.
16, mobile communication system as claimed in claim 15, wherein, described AT comprises: receiver receives the DRI position from AN; And transmitter, optionally send DRC information to AN according to this DRI position.
17, mobile communication system as claimed in claim 16, wherein, described transmitter comprises: selector is used to receive DRC information and optionally exports DRC information according to the DRI position; And expander, be used for the output of predetermined orthogonal code expansion selector.
18, mobile communication system as claimed in claim 15, wherein, described AN comprises: controller, when the first transmitting time section AN sends packet data to AT, check the last time slot of the first transmitting time section; And transmitter, send the DRI position to AT.
19, mobile communication system as claimed in claim 18, wherein, described transmitter comprises expander, is used for expanding described DRI position with predetermined orthogonal code.
20, mobile communication system as claimed in claim 15, wherein, described predetermined time slot is at least two time slots before the last time slot.
21, mobile communication system as claimed in claim 15, wherein, described predetermined time slot is represented from preceding two time slots of last time slot and last time slot.
22, a kind of in having the mobile communication system of AN, in second group access terminal (AT), send the method for data rate control (DRC) information to access network (AN), described AN is used for sending grouped data in the first transmitting time section with a plurality of time slots with a requested data rate, and a plurality of AT are divided into AT group and the 2nd AT group, described AT group is included at least one AT of the first transmitting time section receiving block data, described the 2nd AT group is at first transmitting time section receiving block data not, and the second time period receiving block data after the first transmitting time section, described method comprises step:
Multiply each other by preamble that will receive and a plurality of predetermined orthogonal code of distributing to a plurality of AT, detect first group AT;
Detect the described first transmitting time section from described preamble and send to the length of the grouped data of first group of AT, and check the last time slot of the first transmitting time section; With
In the end produce DRC information in the predetermined time slot before the time slot, and send described DRC information to AN.
23, method as claimed in claim 22, wherein, described predetermined time slot is at least two time slots before the last time slot.
24, method as claimed in claim 22, wherein, described predetermined time slot is represented from preceding two time slots of last time slot and last time slot.
25, a kind ofly in having the mobile communication system of AN, be used to send second group access terminal (AT) of data rate control (DRC) information to access network (AN), described AN is used for sending grouped data in the first transmitting time section with a plurality of time slots with a requested data rate, and a plurality of AT are divided into AT group and the 2nd AT group, described AT group is included at least one AT of the first transmitting time section receiving block data, described the 2nd AT group is at first transmitting time section receiving block data not, and the second time period receiving block data after the first transmitting time section comprises step:
Multiplier multiplies each other by preamble that will receive and a plurality of predetermined orthogonal code of distributing to a plurality of AT, detects first group AT;
The block length detector detects the length that the described first transmitting time section sends to the grouped data of first group of AT from described preamble;
Controller is checked the last time slot of the first transmitting time section; With
Transmitter under the control of controller, in the end optionally sends DRC information to AN in the predetermined time slot before the time slot.
26, AT as claimed in claim 25, wherein, described predetermined time slot is at least two time slots before the last time slot.
27, AT as claimed in claim 25, wherein, described predetermined time slot is represented from preceding two time slots of last time slot and last time slot.
28, AT as claimed in claim 25 further comprises: accumulator is used to the multiplication result that adds up and receive from multiplier; And energy detector, detect energy value, and energy value is presented to the block length detector corresponding to accumulation result.
29, AT as claimed in claim 25, wherein, described transmitter comprises: selector is used to receive DRC information and optionally exports DRC information under the control of controller; And expander, be used for the output of predetermined orthogonal code expansion selector.
30, a kind of in having the mobile communication system of AN, in first group access terminal (AT), send the method for data rate control (DRC) information to access network (AN), described AN is used for sending grouped data in the first transmitting time section with a plurality of time slots with a requested data rate, and a plurality of AT are divided into AT group and the 2nd AT group, described AT group is included at least one AT of the first transmitting time section receiving block data, described the 2nd AT group is at first transmitting time section receiving block data not, and the second time period receiving block data after the first transmitting time section, described method comprises step:
Check the last time slot of the first transmitting time section;
In the end produce DRC information in the predetermined time slot before the time slot, and send described DRC information to AN.
31, method as claimed in claim 30, wherein, described predetermined time slot is at least two time slots before the last time slot.
32, method as claimed in claim 30, wherein, described predetermined time slot is represented from preceding two time slots of last time slot and last time slot.
33, a kind ofly in having the mobile communication system of AN, be used to send first group access terminal (AT) of data rate control (DRC) information to access network (AN), described AN is used for sending grouped data in the first transmitting time section with a plurality of time slots with a requested data rate, and a plurality of AT are divided into AT group and the 2nd AT group, described AT group is included at least one AT of the first transmitting time section receiving block data, described the 2nd AT group is at first transmitting time section receiving block data not, and the second time period receiving block data after the first transmitting time section comprises:
Precode detector detects preamble;
The block length detector detects the length of the grouped data that the described first transmitting time section receives from described preamble;
Controller is checked the last time slot of the first transmitting time section based on block length; With
Transmitter under the control of controller, in the end optionally sends DRC information to AN in the predetermined time slot before the time slot.
34, AT as claimed in claim 33, wherein, described predetermined time slot is at least two time slots before the last time slot.
35, AT as claimed in claim 33, wherein, described predetermined time slot is represented from preceding two time slots of last time slot and last time slot.
36, AT as claimed in claim 33, wherein, described transmitter comprises: selector is used to receive DRC information and optionally exports DRC information under the control of controller; And expander, be used for the output of predetermined orthogonal code expansion selector.
37, a kind of accessing terminal in mobile communication system (AT) comprising:
Multiplier multiplies each other preamble that receives and a plurality of predetermined orthogonal code of distributing to a plurality of AT in proper order;
Detector detects the AT of receiving block data and the length of grouped data from described multiplication result;
Controller is determined the termination time section that grouped data sends based on block length; With
Transmitter, before the termination time section, section optionally sends data rate control (DRC) information to access network (AN) at the fixed time.
38, AT as claimed in claim 37, wherein, if described transmitting time section comprises a plurality of time slots, described predetermined amount of time is at least two time slots before the last time slot.
39, AT as claimed in claim 37, wherein, if described transmitting time section comprises a plurality of time slots, described predetermined time slot is represented from preceding two time slots of last time slot and last time slot.
40, a kind of method that transmits a signal to access network (AN) in being divided into a plurality of the accessing terminal (AT) of first group and second group is used for optionally sending data rate control (DRC) information to AN at mobile communication system, comprises step:
Detect whether described AT sends described DRC information;
If do not send described DRC information, in the predetermined first group time slot of described first group of AT in a plurality of multiplexing time slots, send reverse rate (RRI) and pilot signal to AN; With
If do not send described DRC information, in second group of time slot, send RRI and pilot signal to AN by second group of AT, described second group of time slot is to deduct first group of remaining time slot of time slot from a plurality of multiplexing time slots.
41, method as claimed in claim 40, wherein, described first group of time slot is the strange numbering time slot of described multiplexing time slot.
42, method as claimed in claim 40, wherein, described second group of time slot is the idol numbering time slot of described multiplexing time slot.
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| KR10-2000-0035165A KR100389816B1 (en) | 2000-06-24 | 2000-06-24 | Data rate control information transmission method and apparatus in high data rate communication system |
| KR2000/35165 | 2000-06-24 |
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| CNB01801772XA Expired - Fee Related CN1170377C (en) | 2000-06-24 | 2001-06-23 | Method and appts. for transmitting data rate control information in mobile telecommunication system for packet data transmission |
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| JP (1) | JP3602524B2 (en) |
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| CN1301625C (en) * | 2004-03-15 | 2007-02-21 | 中兴通讯股份有限公司 | Forward scheduling method of mobile communication system |
| CN1310542C (en) * | 2003-04-11 | 2007-04-11 | 株式会社Ntt都科摩 | Base station, mobile station, communication system, transmission control method, and mobile station control program |
| CN100589630C (en) * | 2007-01-17 | 2010-02-10 | 中兴通讯股份有限公司 | Method for performing wireless resource allocation using forward channel quality information |
| CN1792053B (en) * | 2003-05-19 | 2011-08-31 | 日本电气株式会社 | Rate control method and apparatus for data packet transmission |
| WO2011113217A1 (en) * | 2010-03-17 | 2011-09-22 | Qualcomm Incorporated | Apparatus and method for interference mitigation |
| CN101263729B (en) * | 2005-07-20 | 2012-02-29 | 高通股份有限公司 | Method and apparatus for expanded data rate control indices in a wireless communication system |
| CN102870332A (en) * | 2010-03-17 | 2013-01-09 | 高通股份有限公司 | Apparatus and method for interference mitigation |
| US8725145B2 (en) | 2011-01-25 | 2014-05-13 | Qualcomm Incorporated | Mobile device requests of non-communication time periods to a wireless communication network |
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| KR100736489B1 (en) * | 2000-07-14 | 2007-07-06 | 엘지전자 주식회사 | Encoding Method For Reverse Rate Indicator In High Data Rate System |
| KR100393782B1 (en) * | 2000-12-23 | 2003-08-02 | 엘지전자 주식회사 | Forward transmission channel selecting apparatus and method |
| KR100382077B1 (en) * | 2001-06-08 | 2003-04-26 | 주식회사 하이닉스반도체 | Method for controlling of the data transmission speed of forward channel in mobile communication system |
| KR100446501B1 (en) * | 2001-12-15 | 2004-09-04 | 삼성전자주식회사 | Method and apparatus for call admission control according to quality of service in mobile telecommunication base transceiver system |
| KR100434381B1 (en) * | 2001-12-21 | 2004-06-04 | 엘지전자 주식회사 | Control method for data rate control of high data rate system |
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| JP4763051B2 (en) | 2005-07-18 | 2011-08-31 | サムスン エレクトロニクス カンパニー リミテッド | Reverse channel transmission / reception apparatus and method in packet data mobile communication system |
| US8600336B2 (en) * | 2005-09-12 | 2013-12-03 | Qualcomm Incorporated | Scheduling with reverse direction grant in wireless communication systems |
| US8295252B2 (en) * | 2006-05-18 | 2012-10-23 | Qualcomm Incorporated | Interlace-based control channel balancing in a wireless communication network |
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2000
- 2000-06-24 KR KR10-2000-0035165A patent/KR100389816B1/en not_active IP Right Cessation
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2001
- 2001-06-23 BR BR0106871A patent/BR0106871A/en not_active IP Right Cessation
- 2001-06-23 AU AU66387/01A patent/AU766241B2/en not_active Ceased
- 2001-06-23 WO PCT/KR2001/001079 patent/WO2002001761A1/en active IP Right Grant
- 2001-06-23 CA CA 2382764 patent/CA2382764C/en not_active Expired - Fee Related
- 2001-06-23 CN CNB2004100346538A patent/CN1323495C/en not_active Expired - Fee Related
- 2001-06-23 JP JP2002505416A patent/JP3602524B2/en not_active Expired - Fee Related
- 2001-06-23 EP EP01943926A patent/EP1205044A4/en not_active Withdrawn
- 2001-06-23 CN CNB01801772XA patent/CN1170377C/en not_active Expired - Fee Related
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| CN101263729B (en) * | 2005-07-20 | 2012-02-29 | 高通股份有限公司 | Method and apparatus for expanded data rate control indices in a wireless communication system |
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| WO2011113217A1 (en) * | 2010-03-17 | 2011-09-22 | Qualcomm Incorporated | Apparatus and method for interference mitigation |
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| CN102870332A (en) * | 2010-03-17 | 2013-01-09 | 高通股份有限公司 | Apparatus and method for interference mitigation |
| CN102870332B (en) * | 2010-03-17 | 2015-05-20 | 高通股份有限公司 | Apparatus and method for interference mitigation |
| US9179329B2 (en) | 2010-03-17 | 2015-11-03 | Qualcomm Incorporated | Apparatus and method for interference mitigation |
| US9264916B2 (en) | 2010-03-17 | 2016-02-16 | Qualcomm Incorporated | Reducing in-device interference between multiple wireless communications of a multi-mode mobile device |
| US8725145B2 (en) | 2011-01-25 | 2014-05-13 | Qualcomm Incorporated | Mobile device requests of non-communication time periods to a wireless communication network |
Also Published As
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| CN1323495C (en) | 2007-06-27 |
| EP1205044A4 (en) | 2009-09-23 |
| CA2382764A1 (en) | 2002-01-03 |
| JP2004502328A (en) | 2004-01-22 |
| CA2382764C (en) | 2006-08-08 |
| EP1205044A1 (en) | 2002-05-15 |
| BR0106871A (en) | 2002-05-14 |
| JP3602524B2 (en) | 2004-12-15 |
| RU2232471C2 (en) | 2004-07-10 |
| KR100389816B1 (en) | 2003-07-02 |
| CN1170377C (en) | 2004-10-06 |
| CN1534900A (en) | 2004-10-06 |
| AU6638701A (en) | 2002-01-08 |
| KR20020000414A (en) | 2002-01-05 |
| WO2002001761A1 (en) | 2002-01-03 |
| AU766241B2 (en) | 2003-10-09 |
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