CN1277361C - Method for receiving mobile station reverse channel quality indicating channel of CDMA base station - Google Patents
Method for receiving mobile station reverse channel quality indicating channel of CDMA base station Download PDFInfo
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- CN1277361C CN1277361C CN 200310111761 CN200310111761A CN1277361C CN 1277361 C CN1277361 C CN 1277361C CN 200310111761 CN200310111761 CN 200310111761 CN 200310111761 A CN200310111761 A CN 200310111761A CN 1277361 C CN1277361 C CN 1277361C
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/20—Transfer of user or subscriber data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/22—Negotiating communication rate
Abstract
The present invention relates to a method for receiving a quality indication channel of a reverse channel of a mobile station by a code division multiple access (CDMA) base station. In a system composed of a base station controller comprising a selection and distribution unit, a plurality of base station transceivers comprising grouping data channel control function units, and a mobile station, all corresponding BTSs supporting a forward grouping data channel in the current effective set pilot frequency of the mobile station simultaneously receive the quality indication channel information of the reverse channel and carry out information synthesis in the base station controller in the mode of combining active report and passive query. BTS is updated in real time when the forward grouping data channel of the mobile station works to receive CQI information sent to the mobile station. The method can avoid generating a great number of messages of upwards reporting the CQI information in an Abis port, and can furthest exert the receiving capability of the system to maximize the accuracy of the CQI information and maximize the timely degree of the CQI information.
Description
Technical field
The present invention relates to CDMA (code division multiple access) field of mobile communication, relate in particular to the method for base station reception reverse channel quality indication (Reverse ChannelQuality Indicator Channel) in CDMA 1XEV-DV (data and voice that the 1 carrier wave strengthens) system.
Background technology
CDMA 1XEV-DV system is the updating apparatus of CDMA 1X system, can provide the voice-and-data business simultaneously at same carrier frequency, on the basis of complete compatible CDMA 1X function, the forward direction wireless data transmission rate reaches as high as ' 3.1Mbps/ contained fan ' in theory, this forward packet data channel that mainly has benefited from increasing newly in the CDMA 1XEV-DV system has adopted the more modulation technique of high spectrum utilization, again by with the forward packet data control channel, being used of reverse channel quality indication channel and reverse acknowledgement channel, realize HARQ (hybrid-type request-affirmation) and AMC transmission quality controlling mechanisms such as (codings that adapts to control automatically), make the CDMA1XEV-DV system can adapt to the running environment of various complexity, practical transmission rate can reach ' 1Mbps/ contained fan '.
Each grouping bag that forward packet data channel sends all will be provided with certain modulating mode, comprise slot length, parameters such as order of modulation and WALSH sign indicating number channel quantity, the setting of these parameters has determined the expected data parameter speed and the transmission antijamming capability of channel, the expected data transmission rate of modulating mode and transmission antijamming capability are the relations of inverse ratio, if therefore improve expected data parameter speed simply, will cause transmitting antijamming capability descends, thereby raise the packet transmissions mortality, make actual transmission rate descend, otherwise, if improve the transmission antijamming capability simply, the situation of transmittability can appear wasting again, have only modulating mode reasonably is set, could bring into play the transmittability of forward packet data channel to greatest extent.
At foregoing problems, automatically the encoding mechanism that adapts to control requires the base station to receive the situation of forward signal according to travelling carriage, at any time be adjusted at forward packet data channel and send the used modulating mode of grouping bag, make current modulating mode reach enough high-transmission reliabilities, and guarantee that the grouping bag sends on the basis of success rate, adopts high as far as possible expected data transmission rate.
Because the complexity of wireless transmission environment, the situation that travelling carriage receives forward signal is a factor that changes at any time, this point is especially obvious when the travelling carriage high-speed mobile, more owing to there is the frequency interval of 10MHZ～190MHZ before the CDMA between the reverse wireless link, therefore the base station can't be based on the reverse signal intensity of the travelling carriage transmission that receives, estimate the situation of the forward signal that travelling carriage receives exactly, and this point realizes adapting to automatically the key of the encoding mechanism of control just, in CDMA 1XEV-DV system, travelling carriage is by reporting forward signal strength information that oneself receive with 1.25 milliseconds the time interval to the base station in reverse channel quality indication channel, these information that the base station will receive are as the foundation of decision forward packet data channel modulating mode, to realize adapting to automatically the adaptive control of the encoding mechanism of control.
The base station accurately and timely receives travelling carriage at the forward signal strength information that reverse channel quality indication channel sends, and is the encoding mechanism performance useful effect that the base station adapts to control automatically, the basis of realizing higher forward data transmission speed.
Summary of the invention
The technical problem to be solved in the present invention is to realize a kind of method of receiving mobile reverse channel quality indication in the base station, to reach the purpose of the forward signal strength information that accurately and timely receives the travelling carriage transmission.
The present invention is by comprising in the base station controller of selecting Dispatching Unit, the many stylobates station transceiver that comprises Packet Data Channel controlled function unit, the system that travelling carriage is formed, the method of base station receiving mobile reverse channel quality indication may further comprise the steps:
1.1 the quality indication (CQI) information acceptor unit after distributing forward packet data channel for travelling carriage, is created in the respective base station transceiver of all support forward packet data channel in the base station in the current active set pilot tone of travelling carriage;
1.2 described quality indication (CQI) information acceptor unit continues demodulation is carried out in the reverse channel quality indication of travelling carriage emission simultaneously, and CQI (channel quality indication) information that receives is noted, handled respectively according to following situation then:
1) to receiving the cell switch information that travelling carriage sends, sends up-to-date CQI information to the SDU of BSC (base station controller) (selection Dispatching Unit) unit immediately; Or
2) when receiving when selecting CQI information inquiring command that Dispatching Unit sends, return up-to-date CQI information immediately; Or
3) when CQI information inquiring command that the PDCHCF that receives this base station transceiver (Packet Data Channel controlled function) unit sends, return up-to-date CQI information immediately;
1.3SDU from PCF (Packet Control Function unit) receive real-time do not had the grouping bag of special requirement after, to in the current active set of travelling carriage, all support the CQI_RECEIVER of F-PDCH sector to send querying command, after receiving the up-to-date CQI information of respectively returning to CQI_RECEIVER, these CQI information are synthesized processing, and the CQI information after will synthesizing together sends to the PDCHCF of the current F-PDCH serving sector of travelling carriage together with packet data package; Or
As SDU during at the grouping bag that real-time is had relatively high expectations that transmission PCF sends, video stream traffic for example, then SDU will inquire about the mode of operation of CQI information automatically periodically, after receiving the grouping bag that PCF sends, adopt and be synthesized to the foundation that CQI information sends as the grouping bag recently, send to PDCHCF in the lump together with the grouping bag; Or
When receiving the travelling carriage that shows that certain PDCHCF or CQI_RECEIVER send, SDU carrying out the CQI information of cell switch operation at present, then the target F-PDCH of travelling carriage work sector is set to the current F-PDCH work of this travelling carriage sector, the follow-up grouping bag that sends to this travelling carriage will send to this travelling carriage by the PDCHCF of this sector, send the order that stops cell switch to travelling carriage by F-PDCCH simultaneously, travelling carriage is after receiving this order or timer expiry, to withdraw from the cell switch flow process, and enter normal operating state in target sector;
1.4 Packet Data Channel controlled function unit receive select the grouping bag and CQI information thereof that will send to certain travelling carriage that Dispatching Unit sends after, to quality indication acceptor unit transmitting channel quality indication querying command, indicate acceptor unit up-to-date CQI information of returning and the CQI information of selecting Dispatching Unit to send to synthesize with channel quality, and the CQI information after will synthesizing is as the basis of determining to divide into groups to wrap modulating mode; Or
Based on synthetic up-to-date CQI information, find that variation has taken place the WALSH sign indicating number that travelling carriage adopts, and sends to the selection Dispatching Unit with up-to-date CQI information.
In the solution of the present invention:
After creating the quality indication (CQI) information acceptor unit in the respective base station transceiver of base station all support forward packet data channel in the current active set pilot tone of travelling carriage, also can be according to the situation of change of travelling carriage active set, in time adjust the setting of each BTS (base station transceiver) channel quality indication acceptor unit, that is: support the corresponding BTS of forward packet data channel that channel quality indication acceptor unit is set in newly-increased effective pilot tone, the pilot tone that withdraws from active set is supported the channel quality indication acceptor unit of the corresponding BTS of forward packet data channel close, to guarantee that all support the corresponding BTS of forward packet data channel in the current active set pilot tone of travelling carriage, all to create to receive the channel quality indication acceptor unit of this travelling carriage reverse channel quality indication.
The content that channel quality indication receiver carries out demodulation to the reverse channel quality indication of travelling carriage emission comprises: the current time slots travelling carriage is used to carry out the WALSH sign indicating number that the WALSH mask is handled in reverse channel quality indication channel, and the channel quality index uploading value of current time slots.
The quality indication (CQI) information acceptor unit is meant the CQI information of current 20 milliseconds of frames to selecting Dispatching Unit to send or returning up-to-date CQI information, if current time slots is a time slot 0, then the channel quality indication record together with last 20 milliseconds of time slots sends.
The synthetic of described CQI information is exactly the CQI information that each channel quality indication receiver correctly receives to be picked out again reintegrate, thereby obtains a CQI information record as far as possible accurately.
All do not support the corresponding BTS of forward packet data channel will not participate in the power control to this travelling carriage in the current active set pilot tone of travelling carriage, promptly send ' UP ' indication that requires the travelling carriage bring to power always.
The present invention is by all support the corresponding BTS of forward packet data channel to receive reverse channel quality indication channel information simultaneously in the current active set pilot tone of travelling carriage, in the mode of initiatively reporting and passive query combines, synthesize in the base station controller information of carrying out, and carry out real-time update at travelling carriage forward packet data channel work BTS, realization has following some benefit to the reception of travelling carriage transmission CQI information:
1, at any time, the forward packet data channel work BTS of travelling carriage has only one, because preceding reverse wireless link transmission band is bigger at interval, it is bigger unbalanced probability to occur, under the effect of oppositely power control, the channel quality that occurs travelling carriage forward packet data channel work BTS is possibly indicated the correctly reverse channel quality indication channel signal of receiving mobile transmission of receiver, in the present invention, all support the corresponding BTS of forward packet data channel to receive reverse channel quality indication channel information simultaneously in the current active set pilot tone of travelling carriage, and carry out CQI information at the selection Dispatching Unit and synthesize, effect by reverse power control, the error rate that the base station can be received CQI information is controlled in the acceptable scope, the unbalanced problem of reverse link before this moment is with the reception that can not influence basically CQI information.
Though because synthetic the providing of channel quality indication inquiry can make the CQI information after synthesizing that certain time delay is arranged, but by carrying out last CQI information update operation at forward packet data channel work BTS, under the situation that preceding reverse imbalance problem does not exist or degree is lighter, basically can eliminate the delay problem of CQI information, for preceding reverse imbalance problem than serious situation, then the CQI information update operation can't be eliminated the delay problem of CQI information, the loss of necessity that reverse imbalance problem was brought before this can think, the influence that CQI information time delay is possible can be estimated as follows: suppose that travelling carriage is with ' 100 kilometers/hour ' speed move, the inquiry building-up process of channel quality indication has been brought 20 milliseconds time delay, then travelling carriage can move 0.56 meter in this time period, and visible channel quality indication time delay should be an acceptable to the influence of CQI information accuracy.
Owing to select Dispatching Unit before the bag that will divide into groups sends to the Packet Data Channel controlled function of base station transceiver, need carry out the collection and synthetic processing of CQI information earlier, bring some time delays therefore can for the transmission of grouping bag, requiring for real-time is not very high data service, its influence should be unable to be too big, and the business of having relatively high expectations for real-time, video stream traffic for example, owing to select Dispatching Unit to adopt the mode of operation of automatic cycle inquiry CQI information, guaranteed the promptness that the grouping bag sends, though the promptness of CQI information has loss slightly, but the analysis that is based on the front can recognize that this loss should be in tolerance interval.
2, the CQI information that sends in reverse channel quality indication channel of travelling carriage is to be unit with 1.25 milliseconds at interval, among the present invention, the channel quality indication receiver of base station transceiver is receiving the querying command of selecting Dispatching Unit, or find just to report CQI information after travelling carriage enters the cell switch state, this working method can be avoided a large amount of message that reports CQI information occurring at the Abis mouth.
3, select Dispatching Unit that the CQI information that receives each channel quality indication receiver and send synthesize processing, can bring into play the receiving ability of system to greatest extent, the accuracy of CQI information is maximized.
4, the Packet Data Channel controlled function receive select synthetic CQI information that Dispatching Unit sends after, also will carry out the renewal operation of a CQI information, make the timely degree maximization of CQI information.
Description of drawings
Fig. 1 is the function realization schematic diagram that CDMA 1XEV-DV base station system receives the reverse channel quality indication;
Fig. 2 selects Dispatching Unit to send the process chart of grouping bag.
Embodiment
Basic ideas of the present invention are such: in CDMA 1XEV-DV system, the CQI information that travelling carriage sends in reverse channel quality indication channel is the base station decision sends grouping bag modulating mode in forward packet data channel foundation, the accuracy that the base station receives CQI information has critical influence for the forward packet data channel data transmission bauds, because the unbalanced situation of preceding rl transmission condition is commonplace, the forward packet data channel place BTS of the current supervision of travelling carriage possibly can't correctly receive the CQI information that travelling carriage sends in reverse channel quality indication channel, can correctly receive the BTS of travelling carriage in reverse channel quality indication channel transmission CQI information, do not send forward packet data channel grouping bag to travelling carriage, and this CQI message pick-up ability is to change at any time and unforeseen, therefore all are supported the corresponding BTS of forward packet data channel to create and receive the channel quality indication acceptor unit that this travelling carriage reverse channel quality is indicated in the current active set pilot tone of travelling carriage, to guarantee that the base station can both receive CQI information as far as possible accurately in all cases, select Dispatching Unit then the CQI information that each channel quality indication acceptor unit receives to be synthesized processing, so that make the accuracy of CQI information reach maximization.
On the basis of aforementioned basic ideas, also taked the measure of some performance optimizations, comprise: (1) considers that travelling carriage reports the frequency of CQI information higher, for reducing the data transfer throughput of Abis mouth, channel quality indication acceptor unit reports CQI information and selects Dispatching Unit employing passive query and initiatively report the mode that combines; (2) for reducing the time ductility of CQI information, at the BTS that sends the grouping bag to travelling carriage, the Packet Data Channel controlled function receive select CQI information that Dispatching Unit sends after, will carry out last renewal operation; (3), select Dispatching Unit that the mode of operation of cyclic polling CQI information is provided for satisfying the requirement of real time business to processing delay; (4) the channel quality indication acceptor unit for the corresponding BTS that guarantees to support in the current active set pilot tone of travelling carriage forward packet data channel can correctly receive the CQI information that travelling carriage sends, and makes that all do not support the corresponding BTS of forward packet data channel not participate in the power control to this travelling carriage in the current active set pilot tone of travelling carriage.
The function that CDMA 1XEV-DV base station system receives the reverse channel quality indication realizes as shown in Figure 1, in the base station is after travelling carriage has been assigned forward packet data channel, travelling carriage will begin to continue to send CQI information on reverse channel quality indication channel, the corresponding BTS of base station all support forward packet data channel in the current active set pilot tone of travelling carriage creates the channel quality indication acceptor unit that receives this travelling carriage reverse channel quality indication simultaneously, regulation according to agreement, travelling carriage can be done 6 side's soft handovers at most, the active set that is travelling carriage can have 6 pilot tones at most, therefore at certain travelling carriage, may have the reverse channel quality indication that 6 channel qualities indication acceptor units receive its transmission simultaneously at most.Travelling carriage is in activation, various forms of change actions may take place, cause active set to change, the base station will be according to the situation of change of travelling carriage active set, in time adjust the setting of each BTS channel quality indication acceptor unit, comprise: support the corresponding BTS of forward packet data channel that channel quality indication acceptor unit is set in newly-increased effective pilot tone, the pilot tone that withdraws from active set is supported the channel quality indication acceptor unit of the corresponding BTS of forward packet data channel close, target is exactly to guarantee that all support the corresponding BTS of forward packet data channel in the current active set pilot tone of travelling carriage, all creates the channel quality indication acceptor unit that receives this travelling carriage reverse channel quality indication channel.Channel quality indication acceptor unit will and initiatively be reported the mode that combines with the passive query response, the CQI information that demodulation is come out sends to the selection Dispatching Unit of base station controller or the Packet Data Channel controlled function unit of this BTS, the CQI information of selecting Dispatching Unit and Packet Data Channel controlled function unit will utilize channel quality indication receiver to send is carried out the transmission of forward packet data channel grouping bag, select Dispatching Unit also therefrom to obtain the relevant information that travelling carriage is carried out cell switch, so that carry out corresponding handling process.
Channel quality indication acceptor unit is after establishment, demodulation is carried out in the reverse channel quality indication that continues the travelling carriage emission, demodulated content comprises: the current time slots travelling carriage is used to carry out the WALSH sign indicating number that the WALSH mask is handled in reverse channel quality indication channel, and the channel quality index uploading value of current time slots, and the CQI information that receives got off according to following regular record:
Last 20ms frame CQI information record:
| Time slot | Time slot 0 (last 20ms frame boundaries) | Time slot 1 | Time slot 2 | Time slot 3 | … | Time slot 15 |
| The channel quality indication | The indication of all channel quality | Indication of all channel quality or differential channel quality indication | Error code | Indication of all channel quality or differential channel quality indication | … | Indication of all channel quality or differential channel quality indication |
| The WALSH sign indicating number | The WALSH sign indicating number | The WALSH sign indicating number | Error code | The WALSH sign indicating number | … | The WALSH sign indicating number |
Current 20ms frame CQI information record 1:
| Time slot | Time slot 0 (nearest 20ms frame boundaries) | Time slot 1 | Time slot 2 (current time slots) | Time slot 3 | … | Time slot 15 |
| The channel quality indication | The indication of all channel quality | Indication of all channel quality or differential channel quality indication | Error code | Do not send out | … | Do not send out |
| The WALSH sign indicating number | The WALSH sign indicating number | The WALSH sign indicating number | Error code | Do not send out | … | Do not send out |
Preserve the reception condition of all channel quality indications of current 20 milliseconds of frames and last 20 milliseconds of frames in the record sheet, record is a unit with 1.25 milliseconds of time slots, wherein ' error code ' expression channel quality indication acceptor unit fails correctly to receive the channel quality indication at this time slot, and ' not sending out ' represents that this time slot does not also arrive.Channel quality indication acceptor unit monitor reverse quality indicator channel at any time is used to carry out the situation of change that the WALSH mask is handled the WALSH sign indicating number, if find that the WALSH sign indicating number of current time slots is different with the WALSH sign indicating number of last time slot, then the CQI information record with current 20 milliseconds of frames sends to the selection Dispatching Unit.If receive the querying command of selecting Dispatching Unit to send, channel quality indication receiver will send to the selection Dispatching Unit to the CQI information of current 20 milliseconds of frames record, if current time slots is a time slot 0, then the channel quality indication record together with last 20 milliseconds of time slots sends.If receive the querying command that this BTS Packet Data Channel controlled function unit sends, channel quality indication receiver will send to the selection Dispatching Unit to the CQI information of current 20 milliseconds of frames record, if current time slots is a time slot 0, then the channel quality indication record together with last 20 milliseconds of time slots sends.For reducing the unnecessary data transmission, if the forward packet data channel of the current supervision of travelling carriage and channel quality indication receiver are at same BTS, perhaps in the CQI information record that channel quality indication receiver requires to send, do not have the correct CQI information that receives, then channel quality indication receiver will can not respond the querying command of selecting Dispatching Unit.
After selecting Dispatching Unit to receive the grouping bag that need send to travelling carriage from Packet Control Function, if judging the grouping bag need send by forward packet data channel, the handling process of selection Dispatching Unit as shown in Figure 3, select Dispatching Unit at first to send querying command, wait for that then channel quality indication receiver returns up-to-date CQI information to the channel quality indication receiver that all receive this travelling carriage CQI information.If after waiting timer is overtime, select Dispatching Unit not receive the CQI information that channel quality indication receiver returns, select Dispatching Unit will generate empty CQI information record voluntarily, and this CQI information record is sent to the Packet Data Channel controlled function unit that sends forward packet data channel grouping bag when the forward direction travelling carriage in the lump together with the grouping bag.If before waiting timer is overtime, select Dispatching Unit to receive the CQI information that channel quality indication receiver returns, select Dispatching Unit to synthesize processing to the CQI information that each channel quality indication receiver returns, as follows:
The channel quality indication is synthetic:
| Channel quality indication receiver numbering | Time slot 0 | Time slot 1 | Time slot 2 | Time slot 3 | … | Time slot 15 |
| 0 | All channel quality indication 0 | Error code | Error code | Do not send out | … | Do not send out |
| 2 | Error code | Error code | Indication of all channel quality or differential channel quality indication 2 | Do not send out | … | Do not send out |
| 3 | Error code | Indication of all channel quality or differential channel quality indication 1 | Error code | Do not send out | … | Do not send out |
| The indication of composite channel quality | All channel quality indication 0 | Indication of all channel quality or differential channel quality indication 1 | Indication of all channel quality or differential channel quality indication 2 | Do not send out | … | Do not send out |
The WALSH sign indicating number is synthetic:
| Channel quality indication receiver numbering | Time slot 0 | Time slot 1 | Time slot 2 | Time slot 3 | … | Time slot 15 |
| 0 | WALSH sign indicating number 0 | Error code | Error code | Do not send out | … | Do not send out |
| 2 | Error code | Error code | WALSH sign indicating number 2 | Do not send out | … | Do not send out |
| 3 | Error code | WALSH sign indicating number 1 | Error code | Do not send out | … | Do not send out |
| Synthetic WALSH sign indicating number | WALSH sign indicating number 0 | WALSH sign indicating number 1 | WALSH sign indicating number 2 | Do not send out | … | Do not send out |
The synthetic of CQI information is exactly the CQI information that each channel quality indication receiver correctly receives to be picked out again reintegrate, shown in the method for selecting is as above shown, last each row of table is the CQI information that channel quality indication receiver receives, because these receivers are to receive identical signal, if all receivers can both correctly receive, the thing that so all receivers receive all is the same, but because the influence of disturbing, each receiver all not necessarily can receive all signals fully, possible time slot 1 has only receiver 1 to receive, and time slot 2 has only receiver 0 to receive, like this all correct results are gathered, just obtained a correct as far as possible result.Handle by CQI information is synthetic, reached the effect that the CQI information compound flow technology receives, this point is very effective for dealing with wireless environment complicated and changeable.Select Dispatching Unit finish CQI information synthetic after, indicate composite signal together with the grouping bag channel quality, send to the Packet Data Channel controlled function unit that sends forward packet data channel grouping bag when the forward direction travelling carriage in the lump.
If select Dispatching Unit need transmit the business that real-time is had relatively high expectations, video stream traffic for example, then select the pattern of Dispatching Unit inquiry CQI information correspondingly to need to adjust to some extent, select Dispatching Unit to send the CQI information inquiring command to each channel quality indication receiver automatically periodically, and periodically synthetic CQI information, select Dispatching Unit simultaneously after receiving the grouping bag that Packet Control Function sends, will adopt synthetic recently CQI information to send to the Packet Data Channel controlled function in the lump together with the grouping bag.
If select Dispatching Unit after the WALSH sign indicating number record after synthetic is analyzed, find that variation has taken place the used WALSH sign indicating number of travelling carriage, show that then travelling carriage carries out the operation of cell switch at present, select Dispatching Unit will judge the target BTS of travelling carriage cell switch according to the new WALSH sign indicating number that adopts of travelling carriage, and the forward packet data channel target BTS of travelling carriage cell switch is set to the current forward packet data channel work of this travelling carriage BTS, send the order that stops cell switch to travelling carriage by F-PDCH simultaneously, travelling carriage is after receiving this order or timer expiry, to withdraw from the cell switch flow process, and entering normal operating state in target BTS, the grouping bag that sends to this travelling carriage will send to this travelling carriage by the Packet Data Channel controlled function of this BTS.Under the situation of transmitting channel quality indication querying command not, receive the CQI information record that channel quality indication acceptor unit or Packet Data Channel controlled function unit return if select Dispatching Unit, the selection Dispatching Unit will be after receiving article one CQI information recording messages, carry out the judgement of travelling carriage cell switch state immediately, if determine that travelling carriage is carrying out the cell switch flow process, then will begin in a minute and carry out the handling process of cell switch.
Packet Data Channel controlled function unit receive select the grouping bag and CQI information that will send to certain travelling carriage that Dispatching Unit sends after, to receive the channel quality indication acceptor unit transmitting channel quality indication querying command of this travelling carriage CQI information to this BTS, the Packet Data Channel controlled function will indicate acceptor unit up-to-date CQI information of returning and the CQI information of selecting Dispatching Unit to send to synthesize with channel quality, and will be as follows:
The channel quality indication is synthetic:
| Channel quality indication type | Time slot 0 | Time slot 1 | Time slot 2 | Time slot 3 | … | Time slot 15 |
| The channel quality indication record of selecting Dispatching Unit to send | All channel quality indication 0 | Error code | Indication of all channel quality or differential channel quality indication 2 | Do not send out | … | Do not send out |
| The channel quality indication record that this BTS channel quality indication receiver returns | Error code | Indication of all channel quality or differential channel quality indication 1 | Error code | Indication of all channel quality or differential channel quality indication 3 | … | Do not send out |
| Up-to-date channel quality indication record | All channel quality indication 0 | Indication of all channel quality or differential channel quality indication 1 | Indication of all channel quality or differential channel quality indication 2 | Indication of all channel quality or differential channel quality indication 3 | … | Do not send out |
The WALSH sign indicating number is synthetic:
| The WALSH code type | Time slot 0 | Time slot 1 | Time slot 2 | Time slot 3 | … | Time slot 15 |
| The WALSH sign indicating number record of selecting Dispatching Unit to send | WALSH sign indicating number 0 | Error code | WALSH sign indicating number 2 | Do not send out | … | Do not send out |
| The WALSH sign indicating number record that this BTS channel quality indication receiver returns | Error code | WALSH sign indicating number 1 | Error code | WALSH sign indicating number 3 | … | Do not send out |
| Up-to-date WALSH sign indicating number record | WALSH sign indicating number 0 | WALSH sign indicating number 1 | WALSH sign indicating number 2 | WALSH sign indicating number 3 | … | Do not send out |
Its principle is synthetic the same with the CQI information of selecting Dispatching Unit.
Make CQI information more accurate outside, also reached the target that CQI information is upgraded as far as possible, the up-to-date CQI information after synthetic is as the basis of determining grouping bag modulating mode.Packet Data Channel controlled function unit also will be analyzed the WALSH sign indicating number situation of change of up-to-date synthetic CQI information, variation has taken place if find the WALSH sign indicating number that travelling carriage adopts, then Packet Data Channel controlled function unit sends to the selection Dispatching Unit with up-to-date CQI information, selects Dispatching Unit to carry out the handling process of cell switch with notice.
If among the BTS of travelling carriage active set pilot tone correspondence, the BTS that the forward packet data channel do not supported is arranged, then can't create channel quality indication acceptor unit at these BTS, if the uneven relatively serious situation of preceding reverse transfer condition, under the effect of oppositely power control, occur not having which channel quality indication receiver can correctly receive the situation of CQI information possibly, forward packet data channel can't send the grouping bag to travelling carriage this moment, for addressing this problem, must make the BTS that does not support forward packet data channel not participate in reverse power control to travelling carriage, the power control indication that this BTS is sent is continuously ' UP ', though may increase travelling carriage like this to the taking of backward channel capacity, can guarantee that the base station sends the grouping bag by forward packet data channel to travelling carriage in this case.
Method involved in the present invention mainly is the situation that a plurality of pilot tones are arranged at the travelling carriage active set, be used to solve the base station when the reverse channel quality indication that receiving mobile sends, the unbalanced problem of preceding rl transmission condition that may run into, this problem is carried out soft handover at travelling carriage, soft handover all exists equally between More Soft Handoff and base station controller, method involved in the present invention can adapt to these several situations well, and can bring into play expected effect, travelling carriage is under non-soft changing state, has only an effective pilot tone, can eliminate the influence that preceding rl transmission condition imbalance is brought by reverse power control, use method involved in the present invention and can improve the compatibility of system design, and can not bring harmful effect.
Claims (5)
1, the method for CDMA base receiving mobile reverse channel quality indication, by comprising the base station controller of selecting Dispatching Unit, comprising in many stylobates station transceiver of Packet Data Channel controlled function unit and channel quality indication receiver, the system that travelling carriage is formed, take following steps:
1.1 channel quality indication acceptor unit after distributing forward packet data channel for travelling carriage, is created in the base station in the respective base station transceiver of all support forward packet data channel in the current active set pilot tone of travelling carriage;
1.2 described channel quality indication acceptor unit continues the WALSH sign indicating number that the reverse channel quality of travelling carriage emission indicates and be used to carry out the WALSH mask to handle is carried out demodulation simultaneously, and the channel quality indication (CQI) information that receives noted, handle respectively according to following situation then:
1) to receiving the cell switch information that travelling carriage sends, sends up-to-date channel quality indication (CQI) information to the selection Dispatching Unit unit of base station controller immediately; Or
2) when receiving when selecting channel quality indication (CQI) information querying command that Dispatching Unit sends, return up-to-date channel quality indication (CQI) information immediately; Or
3) when channel quality indication (CQI) information querying command that the Packet Data Channel controlled function unit that receives this base station transceiver sends, return up-to-date channel quality indication (CQI) information immediately;
1.3 select Dispatching Unit from the Packet Control Function unit receive real-time do not had the grouping bag of special requirement after, all support the channel quality indication receiver of forward packet data channel sector to send querying command in the current active set of travelling carriage, after receiving the up-to-date channel quality indication (CQI) information that each channel quality indication receiver returns, these channel quality indication (CQI) informations are synthesized processing, and the channel quality indication (CQI) information after will synthesizing together sends to the Packet Data Channel controlled function unit of the current forward packet data channel serving sector of travelling carriage together with packet data package; Or
When the grouping bag that real-time is had relatively high expectations of selecting that Dispatching Unit sends in transmission Packet Control Function unit, select Dispatching Unit that receiver transmitting channel quality indication (CQI) information is indicated to each channel quality in automatic cycle ground, and composite channel quality indication (CQI) information periodically "; after receiving the grouping bag that sends the Packet Control Function unit; adopt and be synthesized to the foundation that channel quality indication (CQI) information sends as the grouping bag recently, send to Packet Data Channel controlled function unit in the lump together with the grouping bag; Or
Carrying out the channel quality indication (CQI) information of cell switch operation at present when selecting Dispatching Unit to receive the travelling carriage that shows that certain Packet Data Channel controlled function unit or channel quality indication receiver send, then the target forward packet data channel work sector of travelling carriage is set to the current forward packet data channel work of this travelling carriage sector, the follow-up grouping bag that sends to this travelling carriage will send to this travelling carriage by the Packet Data Channel controlled function unit of this sector, send the order that stops cell switch to travelling carriage by forward packet data channel simultaneously, travelling carriage is after receiving this order or timer expiry, to withdraw from the cell switch flow process, and enter normal operating state in target sector;
1.4 Packet Data Channel controlled function unit receive select the grouping bag and channel quality indication (CQI) information thereof that will send to certain travelling carriage that Dispatching Unit sends after, to channel quality indication acceptor unit transmitting channel quality indication querying command, indicate acceptor unit up-to-date channel quality indication (CQI) information that returns and the channel quality indication (CQI) information of selecting Dispatching Unit to send to synthesize with channel quality, and the channel quality indication (CQI) information after will synthesizing is as the basis of determining to divide into groups to wrap modulating mode; Or
Based on synthetic up-to-date channel quality indication (CQI) information, find that variation has taken place the WALSH sign indicating number that travelling carriage adopts, and sends to the selection Dispatching Unit with up-to-date channel quality indication (CQI) information.
2, the method of the described CDMA base receiving mobile of claim 1 reverse channel quality indication, it is characterized in that: after creating channel quality indication acceptor unit in the respective base station transceiver of base station all support forward packet data channel in the current active set pilot tone of travelling carriage, situation of change according to the travelling carriage active set, in time adjust the setting of each base station transceiver channel quality indication acceptor unit, that is: support the respective base station transceiver of forward packet data channel that channel quality indication acceptor unit is set in newly-increased effective pilot tone, the pilot tone that withdraws from active set is supported the channel quality indication acceptor unit of the respective base station transceiver of forward packet data channel close.
3, the method for the described CDMA base receiving mobile of claim 1 reverse channel quality indication is characterized in that: the content that channel quality indication receiver carries out demodulation to the reverse channel quality indication channel of travelling carriage emission comprises: channel quality indication (CQI) information value of reporting of current time slots.
4, the method for the described CDMA base receiving mobile of claim 1 reverse channel quality indication, it is characterized in that: described quality indication (CQI) information acceptor unit is to selecting Dispatching Unit to send or return up-to-date channel quality indication (CQI) information, be meant the channel quality indication (CQI) information of current 20 milliseconds of frames, if current time slots is a time slot 0, then the channel quality indication record together with last 20 milliseconds of time slots sends.
5, the method for the described CDMA base receiving mobile of claim 1 reverse channel quality indication, it is characterized in that: the synthetic of described channel quality indication (CQI) information is exactly the channel quality indication (CQI) information that each channel quality indication receiver correctly receives to be picked out again reintegrate, thereby obtains a channel quality indication (CQI) information record as far as possible accurately.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310111761 CN1277361C (en) | 2003-10-11 | 2003-10-11 | Method for receiving mobile station reverse channel quality indicating channel of CDMA base station |
| PCT/CN2004/001142 WO2005036792A1 (en) | 2003-10-11 | 2004-10-09 | Method of cdma base station receive mobile station reverse channel quality indicator channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310111761 CN1277361C (en) | 2003-10-11 | 2003-10-11 | Method for receiving mobile station reverse channel quality indicating channel of CDMA base station |
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| CN1529448A CN1529448A (en) | 2004-09-15 |
| CN1277361C true CN1277361C (en) | 2006-09-27 |
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| CN 200310111761 Expired - Fee Related CN1277361C (en) | 2003-10-11 | 2003-10-11 | Method for receiving mobile station reverse channel quality indicating channel of CDMA base station |
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| CN (1) | CN1277361C (en) |
| WO (1) | WO2005036792A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100382477C (en) * | 2004-09-22 | 2008-04-16 | 中兴通讯股份有限公司 | Receiving method of backward packet data channel in CDMA system |
| US8693383B2 (en) * | 2005-03-29 | 2014-04-08 | Qualcomm Incorporated | Method and apparatus for high rate data transmission in wireless communication |
| JP2006311475A (en) * | 2005-03-31 | 2006-11-09 | Ntt Docomo Inc | Controller, mobile station, mobile communication system and control method |
| CN1988454B (en) * | 2005-12-23 | 2010-05-12 | 北京三星通信技术研究有限公司 | Method and device for reporting channel quality indication |
| ES2623153T3 (en) * | 2006-05-01 | 2017-07-10 | Intel Corporation | Provide CQI feedback with common code speed to a transmitting station |
| GB0720725D0 (en) * | 2007-08-17 | 2007-12-05 | Icera Inc | Reporting channel quality information |
| CN101527944B (en) * | 2008-03-05 | 2011-01-05 | 中兴通讯股份有限公司 | Switching method and base station based on adaptive modulation coding |
| CN102025442B (en) * | 2009-09-23 | 2013-05-22 | 电信科学技术研究院 | Method and device for channel quality indication information of multi-user terminals |
| US9043478B2 (en) * | 2009-12-15 | 2015-05-26 | Qualcomm Innovation Center, Inc. | Methods and apparatus for using a distributed message bus for ad hoc peer-to-peer connectivity |
| CN102215086B (en) * | 2010-04-09 | 2013-11-06 | 中兴通讯股份有限公司 | Channel quality indicator feedback method and device |
| CN103199916B (en) * | 2012-01-04 | 2015-08-12 | 普天信息技术研究院有限公司 | A kind of data transmission method of Remote Radio Unit |
| CN102946615A (en) * | 2012-11-14 | 2013-02-27 | 北京奇天揽胜科技有限公司 | System and method used for improving MIMO (multiple input multiple output) system communication situation |
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| CN1192651C (en) * | 1998-07-16 | 2005-03-09 | 三星电子株式会社 | Processing packet data in mobile communication system |
| CN1359208A (en) * | 2000-12-19 | 2002-07-17 | 华为技术有限公司 | Method for distributing forward link initial emission power in CDMA System |
| CN1138371C (en) * | 2000-12-19 | 2004-02-11 | 华为技术有限公司 | Method for distributing forward link initial emission power in CDMA system |
| CN1138364C (en) * | 2000-12-23 | 2004-02-11 | 华为技术有限公司 | Forward service rate regulating method and mobile station in CDMA system |
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| CN1529448A (en) | 2004-09-15 |
| WO2005036792A1 (en) | 2005-04-21 |
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