CN101112015A - Method for transmitting and receiving data - Google Patents
Method for transmitting and receiving data Download PDFInfo
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- CN101112015A CN101112015A CN200680003620.4A CN200680003620A CN101112015A CN 101112015 A CN101112015 A CN 101112015A CN 200680003620 A CN200680003620 A CN 200680003620A CN 101112015 A CN101112015 A CN 101112015A
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Abstract
In a mobile communications system, a method of transmitting data corresponding to the same logical channel through two or more base stations, comprising: transmitting a first sub-packet generated by a first base station and a second base station based upon an encoded packet; and at a time point after the lapse of a certain time period from when the first sub-packet was transmitted, transmitting a second sub-packet generated by one of the first and second base stations based upon the encoded packet. When data corresponding to the same logical channel is broadcast from each base station that has respectively different channel environments, data transmission efficiency can be improved.
Description
Technical field
The present invention relates to transmit and receive data, and more specifically, relate to a kind of being used for when the method for improving data transmission efficiency from each base station broadcast of having the different channels environment respectively during corresponding to the data of identical logic channel.
Background technology
In the mobile communication system of supporting broadcasting/multiple access communication service, except that speech data, need to send the multi-medium data that comprises image, need high data rate thus.Therefore, for broadcasting/multiple access communication service is provided, the Packet Data Channel of physical layer should be able to be supported high data rate.
Exist in the wireless environment of decay, therein in order to send multi-medium data with stable manner by Packet Data Channel, the automatic re-send request may of application mix (HARQ) scheme.HARQ is in conjunction with forward error correction (FEC) and automatic re-send request may (ARQ) technology.
This HARQ scheme will be explained as follows in more detail.At first, for the data that send, the channel encoder (for example, the turbo encoder) that has error correction by use is carried out coding, and the transmission one or more son groupings relevant with single packet.
When sending the first son grouping from transmitting terminal, carry out decoding at the receiving terminal that receives the first son grouping.If successfully carry out decoding, will reply (ACK) signal and send to transmitting terminal.Simultaneously, if the not success of decoding of the first son grouping that receives will deny that (NACK) signal feedback is to transmitting terminal.
At transmitting terminal,, send and subsequently first relevant sub grouping of grouping if receive ack signal.If receive the NACK signal, send the second son grouping relevant with the grouping that has sent.At receiving terminal, the first son grouping is stored in the buffer, and when the transmission second son grouping, makes the success rate of decoding to increase in conjunction with the first and second son groupings and execution decoding.
Fig. 1 shows and realizes the illustrative methods of HARQ to the block interleaved structure.With reference to figure 1, can realize being used to send the channel of grouped data by the structure of using thus each to interweave to repeat regularly with the time interval of determining.As shown in Figure 1, this example packet data channel comprises that four interweave, thus by adopting these four one of to interweave and to send single packet.When determine to send interweave the time, divide into groups accordingly by this interleaved transmission of determining.This will be described in more detail below.
In Fig. 1, for the 0th grouping, the first son grouping is P00, and the second son grouping is P01, and the 3rd son grouping is P02, and the 4th son grouping is P03.For first grouping, the first son grouping is P10.
As shown in Figure 1, suppose by using the 0th interleaved transmission the 0th grouping.From transmitting terminal, the first son grouping relevant with the 0th grouping arrived receiving terminal via the 0th interleaved transmission.Under the situation of the receiving terminal reception and the first son grouping of decoding,, the NACK signal feedback is arrived transmitting terminal if decoding is unsuccessful.At transmitting terminal, when receiving the NACK signal, the 0th interweaves is used to send second son relevant with the 0th grouping and is grouped into receiving terminal.When receiving the second son grouping, receiving terminal divides into groups in conjunction with second son and is stored in the grouping of of first in the buffer and carries out decoding.However, if decoding is still unsuccessful, the NACK signal feedback is arrived transmitting terminal.
At transmitting terminal, when receiving the NACK signal, the 0th interweaves is used to send three son relevant with the 0th grouping once more and is grouped into receiving terminal.Repeatedly carry out these processes up to receiving ack signal, perhaps up to arriving threshold number.Above-mentioned, by using identical interleaved transmission and single each relevant son grouping.
When sending broadcasting/multiple access communication data by Packet Data Channel, above-mentioned ACK/NACK feedback does not exist.This is because the characteristic of the one-to-many communication of the characteristic of serving as broadcasting/multiple access communication causes.Therefore, when sending broadcasting/multiple access communication data,, must determine transformat so that be present in any mobile radio station in the specific sub-district and have the quality of reception greater than definite threshold value because can not receive independent ack/nack signal about each mobile radio station.This transformat comprises data rate, payload size, the number of the son grouping of transmission, modulator approach of use or the like.When determining transformat, broadcasting/multiple access communication service is carried out according to the transformat of determining in each base station.
The number that Fig. 2 shows group grouping changes the exemplary types of the data rate that payload size and modulator approach simultaneously can provide fixedly the time.Here, suppose that the payload size is 2048, and sub-packet transmission time interval is 1/600 second.As shown in Figure 2, for base station, consider the decay environment with good overall channel environment (condition), when interference environment, radius of society etc., use the 0th to interweave once to send single packet, thus can be in high data rate (for example, 1.2288Mbps) transmission broadcasting/multiple access communication grouping.Yet, if overall channel environment (condition) is bad, use the 0th to interweave 4 times to send single packet, can transmit (for example, 307.2kbps) transmission broadcasting/multiple access communication grouping thus at low speed data.
Send broadcasting/multiple access communication data via Packet Data Channel, and each interweaves and has at least one multiplexed signals with pilotaxitic texture.Preferably, single interweaving comprises 4,8, perhaps 16 multiplexed signalss.Interweave thus ,-multiplexed signals is used for sending grouping to being used to indicate which which multiplexed signals in interweaving.
For each interweave-multiplexed signals is right, has the burst length related with it.The number that multiply by the grouping that each pulse train sends by the number according to the son grouping of each grouping of transmitted data rates is determined burst length.Interweave-multiplexed signals is to taking the specific interval of the same interlace that equals burst length continuously.Therefore, comprise by interweaving-subchannel of multiplexed signals by its Packet Data Channel that sends broadcasting/multiple access communication data defining.This base station maps comprises at least-and a logic channel of individual broadcasting/multiple access communication service (BCMCS) stream interweaves at least one-and multiplexed signals is right.
Table 1 show comprise with interweave-multiplexed signals is right, burst length, the example of the overhead signaling message of the information relevant with the number of the son of each grouping grouping.
[table 1]
| Field | Length (position) |
…
| Interlace0Included | 1 |
| SameBurstLengths0 | 0 or 1 |
| TotalBurstLength0 | 0 or 10 |
Following field appearance zero, one or MultiplexesPerInterlace-1:
| BurstLength0 | 4 |
| Interlace1Included | 1 |
| SameBurstLengths1 | 0 or 1 |
| TotalBurstLength1 | 0 or 10 |
Following field appearance zero, one or MultiplexesPerInterlace-1:
| |
4 |
| Interlace2lncluded | 1 |
| SameBurstLengths2 | 0 or 1 |
| TotalBurstLength2 | 0 or 10 |
Following field appearance zero, one or MultiplexesPerInterlace-1:
| |
4 |
| Interlace3Included | 1 |
| SameBurstLengths3 | 0 or 1 |
| TotalBurstLength3 | 0 or 10 |
Following field appearance zero, one or MultiplexesPerInterlace-1:
| BurstLength3 | 4 |
…
Below four fields occur zero or one:
| PhysicalChannelCount | 7 |
| |
0 or 4 |
| |
0 or 4 |
| MACPacketsPerECBRow | 0 or 4 |
Below two fields occur zero or PhysicalChannelCount:
| Interlace | 2 |
| |
4 |
In table 1, Interlace0Included, Interlace1Included, which Interlace2Included and Interlace3Included field indicate interweave to be used for BCMC service.For example,, be set to " 1 " corresponding to the 0th Interlace0Included field that interweaves if the 0th interweave and be used for BCMCS, if but not using, it can be set to " 0 ".
The indication of MultiplexesPerlnterlace field comprises the number of a multiplexed signals that interweaves.
And, BurstLength0, BurstLength1, BurstLength2 and the indication of BurstLength3 field correspond respectively to each and interweave-the right burst length of multiplexed signals.
In addition, the number of PhysicalChannelCount field indication physical sub-channels, subchannel is meant and is used to send that the interweaving of a BCMCS logic channel-multiplexed signals is right thus.
The DataRate field is indicated the data rate of corresponding physical channel.Here, according to this data-rate value, determine the size of the grouping that sends by corresponding physical channel and send a grouping need the number of time slot.
Table 2 shows according to the DataRate field value of table 1 and the example of the data rate of the number of the time slot that sends the grouping needs that send by corresponding physical channel.
[table 2]
| The DataRatexxx field | Data rate | The time slot of every broadcast physical layer grouping |
| ′0000′ | 38.4kbps | 16 |
| ′0001′ | 76.8kbps | 8 |
| ′0010′ | 153.6 |
4 |
| ′0011′ | 204.8kbps | 3 |
| ′0100′ | 307.2kbps | 2 |
| ′0101′ | 308.2 |
4 |
| ′0110′ | 409.6kbps | 3 |
| ′0111′ | 614.4kbps | 1 |
| ′10001 | 614.4kbps | 2 |
| ′1001′ | 921.6kbps | 2 |
| ′1010′ | 12288.8kbps | 1 |
| ′1011′ | 12288.8kbps | 2 |
| ′1100′ | 1843.2kbps | 1 |
| ′1101′ | 2457.6kbps | 1 |
| ' 1110 ' to ' 1111 ' | Keep |
In table 1, interlaced fields and multiplexed signals field be used to notify by which interweave-multiplexed signals is to sending the purpose of corresponding physical channel.Here, can by with burst length divided by the number with a relevant time slot of grouping calculate with one interweave-multiplexed signals is to the number of the grouping of being correlated with.
Fig. 3 shows the illustrative methods that use interface-multiplex pair structure sends broadcasting/multiple access communication data.When interface-multiplexed signals when being represented as (interface number, multiplexed signals number), the Packet Data Channel by as shown in Figure 3 sends broadcasting/multiple access communication data.Here, Fig. 3 shows wherein four multiplexed signalss of each interface existence, and each multiplexed signals burst length is one example.
Fig. 4 shows and is used to broadcast/the exemplarily plot structure of multiple access communication service.Can provide broadcasting/multiple access communication service by mode (regional A is to regional G) based on the area.In the service based on the area, the area that is taken by at least one group of base stations is defined as a regional unit, and for each area, provides BCMCS stream as service independently.Therefore, the identical logic channel that has identical BCMCS stream in mapping as the base station of the part in identical area to identical interface-multiplexed signals to the time send.
Here, the sub-district can be based on the area of ground characteristics definition, and the sector can be based on the area of characteristics of signals definition simultaneously.Simultaneously, one or more sub-districts may be managed in the base station, perhaps one or more sectors.Similarly, we can say based on each sub-district provides service, provides service based on each sector, provides service or the like based on each base station.Below describe and only to make a general reference the area that wherein has the sub-district for simplicity.
As above, when carrying out broadcasting based on the area/multiple access communication service, the whole base stations in each area by identical interface duplex signal to sending identical data.Thus, the mobile radio station that is positioned at specific area receives the identical grouping that sends from least one base station in identical area, and by combination and these groupings of decoding, can obtain diversity gain.
Fig. 5 shows and is used to explain the example that has the sub-district of different channels environment in the single area respectively.Picture sub-district A for the mobile radio station in the sub-district that is arranged in regional central area, receives the identical grouping that sends from neighbor base station, and can obtain diversity gain.Yet as sub-district B or sub-district D, for the mobile radio station in the sub-district that is arranged in regional periphery, other groupings that send from the sub-district as other regional parts cause that interference and channel status (condition) may be bad thus.Simultaneously, as sub-district C, although be positioned at the central area in area, channel status (condition) is because the environmental characteristics of sub-district itself, because ground, and building etc. and possible bad.
Therefore, in sub-district (such as sub-district A), can send grouping with high data rate, such as 1.2288Mbps with good channel status.But in the bad position (such as sub-district B, C, perhaps D) of channel status,, add redundant information and, only can send grouping therein with 614.4kbps or low data rate because need to send it repeatedly for overcoming bad channel status.
Fig. 6 shows the illustrative methods according to the transmission broadcasting/multiple access communication data of prior art.Interweaving with reference to 6, one in figure comprises four multiplexed signalss, and the BCMCS logic channel be mapped to four and interweave-multiplexed signals is to (0,0), (0,1), (0,2), (0,3).That is, show and use the whole the 0th to interweave and transmit the method for data.Here, burst length is 1.In first embodiment, because burst length is 1, each grouping only sends a son grouping.Thus, although can send grouping, about the service quality of the deterioration of the mobile radio station that is arranged in sub-district the problem of a type taking place with bad channel status with high data rate.
Fig. 7 shows another illustrative methods according to the transmission broadcasting/multiple access communication data of prior art.With reference to figure 7, single interweaving comprises four multiplexed signalss, and the BCMCS logic channel be mapped to four and interweave-multiplexed signals is to (0,0), (0,1), (0,2), (0,3).That is, show and use the whole the 0th to interweave and transmit the method for data.Here, burst length is 3.In this case, because burst length is 3, each grouping can send three son groupings.Thus, in structure, about being arranged in the mobile radio station of sub-district, can guarantee service quality, but low data rate is the problem of another type of taking place with stable manner more with bad channel status based on the area.
As mentioned above, when broadcasting based on the area/multiple access communication service is provided, can be different to the channel status of each sub-district.Yet if determine transformat based on specific sub-district, about the waste of each sub-district generation radio (wireless) resource, this can cause that efficient reduces and service quality reduces.
Summary of the invention
One aspect of the present invention comprises the shortcoming of being discerned prior art by the inventor, as mentioned above.Based on this identification, made improvement according to the present invention to variable rate transmission method.
More particularly, the invention provides a kind of point-to-multipoint method of servicing that is used to have the communication system of at least one access network and a plurality of terminals, the method comprising the steps of, the configuration access network is so that the sector that allow to send in the identical area of identical logic channel adopts the different data rates that send to be used for transmission of data packets, and uses different transmission data rates to provide this point-to-multipoint to serve each terminal.
The present invention relates to group data transmission method, more specifically, relate in the base station based on the channel status method of broadcast packe effectively.
Other advantage, purpose and feature of the present invention will partly be set forth at following specification, afterwards, after having studied following content or learnt after the practice of the present invention, to become on the part degree of the present invention for those of ordinary skills obviously, perhaps can know from the practice of the present invention.Specifically note according to appending claims, can realize and obtain objects and advantages of the present invention.
Description of drawings
Fig. 1 shows and realizes the illustrative methods of HARQ to the block interleaved structure;
The number that Fig. 2 shows group grouping changes the exemplary types of the data rate that payload size and modulator approach simultaneously can provide fixedly the time;
Fig. 3 show use interweave-multiplex pair structure sends the illustrative methods of broadcasting/multiple access communication data;
Fig. 4 shows and is used to broadcast/the exemplary area structure of multiple access communication service;
Fig. 5 shows and is used to explain the example that has the sub-district of different channels environment in the single area respectively;
Fig. 6 shows the illustrative methods according to the transmission broadcasting/multiple access communication data of prior art;
Fig. 7 shows another illustrative methods according to the transmission broadcasting/multiple access communication data of prior art;
Fig. 8 shows the illustrative methods that Packet Data Channel sends broadcasting/multiple access communication data of passing through according to first embodiment of the invention;
Fig. 9 shows the illustrative methods that Packet Data Channel sends broadcasting/multiple access communication data of passing through according to second embodiment of the invention;
Figure 10 shows the exemplary process diagram that is used for receiving at mobile radio station broadcasting/multiple access communication data;
Figure 11 shows the exemplary configurations of the mobile radio station of supporting feature of the present invention.
Embodiment
The present invention is described as be implemented in the 3GPP2 type mobile communication system, in the 1xEV-DO mobile communication system.Yet feature of the present invention can also adapt to and be implemented in other types communication specification (for example, 3GPP, 4G, IEEE, OMA, Deng) in the communication system of work, because in notion of the present invention and the instruction various communication plans that can be applied to working in a similar manner based on common techniques.
And, to in the environment of broadcasting/multiple access communication service (BCMCS), explain the present invention, but feature of the present invention can be applied to provide multi-medium data to arrive various types of point-to-multipoint services of user, such as mbms service (MBMS), media broadcast, content transmits, or the like.
Explain non-restrictive example embodiment of the present invention below with reference to accompanying drawing.
The invention provides a kind of transfer of data and method of reseptance, if the channel condition (state) of the base station in identical area is different respectively thus, this condition is considered to more effectively send (for example, broadcasting) grouped data.
Fig. 8 shows the illustrative methods that Packet Data Channel sends broadcasting/multiple access communication data of passing through according to first embodiment of the invention.First embodiment as shown in Figure 8, single interweaving comprises 4 multiplexed signalss, and the BCMCS logic channel be mapped to four and interweave-multiplexed signals is to (0,0), (0,1), (0,2), (0,3).That is, show and use the whole the 0th to interweave and transmit the method for data.Here, burst length is 3.
In the present embodiment, even determined that burst length is 3,, allow to determine independently respectively the number of the son grouping relevant with single packet according to the channel condition of each base station.
That is, suppose at the channel condition of base station A finely, base station A is set to only to send the single son grouping relevant with single packet, makes to send grouping with high data rate.
And, supposing that the channel condition at base station B or C can be said to be, base station B or C are set to send two the son groupings relevant with single packet, make to send grouping with high relatively data rate.
Yet, suppose at the channel condition of base station D badly, base station D is set to send three the son groupings relevant with single packet, makes to send grouping with low data rate.
As mentioned above, have the base station of good channel condition, send grouping to increase efficiency of transmission thus, have the base station of bad channel condition at those simultaneously, send grouping to guarantee the quality of reception thus with lower data speed with higher data rate at those.
Simultaneously, when channel condition is good,, can send data of different types, increase efficiency of transmission thus via the time interval when sending the second and the 3rd son grouping such as at base station A.Here, when sending the data of other types, can control the transmitting power of base station A by the interference of consideration and the data that send from other base stations via interweaving.That is, can differently be provided for sending the transmitting power that the time slot of BCMCS data and being used to sends the time slot of other data.Send the transmitting power of time slot of BCMCS data and difference or the ratio that sends between the transmitting power of time slot of other data and can be sent to mobile radio station by signaling.
Table 3 shows the example of the overhead signaling message of the BCMC logic channel transmission method that is used to support first embodiment.
[table 3]
| Field | Length (position) |
…
| Interlace0Included | 1 |
| SameBurstLengths0 | 0 or 1 |
| TotalBurstLength0 | 0 or 10 |
Following field appearance zero, one or MultiplexesPerInterlace-1:
| |
4 |
| Interlace1Included | 1 |
| SameBurstLengths1 | 0 or 1 |
| TotalBurstLength1 | 0 or 10 |
Following field appearance zero, one or MultiplexesPerInterlace-1:
| |
4 |
| Interlace2Included | 1 |
| SameBurstLengths2 | 0 or 1 |
| TotalBurstLength2 | 0 or 10 |
Following field appearance zero, one or MultiplexesPerInterlace-1:
| |
4 |
| Interlace3Included | 1 |
| SameBurstLengths3 | 0 or 1 |
| TotalBurstLength3 | 0 or 10 |
Following field appearance zero, one or MultiplexesPerInterlace-1:
| |
4 |
…
Below four fields occur zero or one:
| PhysicalChannelCount | 7 |
| |
0 or 4 |
| |
0 or 4 |
| |
0 or 4 |
| Period | 0 or 2 |
Below two fields occur zero or PhysicalChannelCount:
| interlace | 2 |
| |
4 |
In table 3, Interlace0Included, Interlace1Included, Interlace2Included and Interlace3Included field indicate whether that each interweaves and are used for BCMC service.For example, if the 0th interweave and be used for BCMCS, the Interlace0Included field is set to " 1 ", if but not using, it can be set to " 0 ".
The indication of MultiplexesPerInterlace field comprises the number of a multiplexed signals that interweaves, while BurstLength0, BurstLength1, BurstLength2 and the indication of BurstLength3 field correspond respectively to the right burst length of each interface-multiplexed signals.
In addition, the number of PhysicalChannelCount field indication physical sub-channels, each by interweave-multiplexed signals is used to send a BCMCS logic channel to definition, the DataRate field is indicated the data rate of corresponding physical channel simultaneously.Here, according to this data-rate value, determine the size of the grouping that sends by corresponding physical channel and send a grouping need the number of time slot.
This interweave and multiplexed signals field indication by which interweave-multiplexed signals is to sending corresponding physical channel.
In first embodiment shown in Figure 8, consider base station A as an example, send the single one physical grouping by single time slot, and interweave accordingly-multiplexed signals is to having 3 burst length.For base station A, because duration of existence does not send the interval of BCMCS, such as a and b, can not be by burst length be drawn the number that (calculating) adds the right broadcasting physical packets of single interweaving-multiplexed signals divided by the number corresponding to the time slot of single packet.
Therefore, need to send to be used to obtain to add accordingly and interweave-information of the number of the right physical packets of multiplexed signals.Thus, as shown in table 3, can send this information via the Period field that is included in the broadcasting overhead message.
If the Period field value is defined as the cycle (at interval) when sending the first son grouping of corresponding physical packets, can interweave accordingly-number of the right physical packets of multiplexed signals by corresponding burst length is drawn (calculatings) adding divided by the Period field value.
In first embodiment, base station A has the data rate of 1.2288Mbps and sends the broadcasting physical packets via first time slot.Simultaneously, base station B has the data rate of 614.4kbps and sends the broadcasting physical packets via second time slot, and base station D has the data rate of 409.6kbps and sends the broadcasting physical packets via the 3rd time slot.For the whole base stations among Fig. 8, the Period field value is 3.
Table 4 shows the example of the overhead signaling message of the BCMC logic channel transmission method that is used to support second embodiment.
[table 4]
| Field | Length (position) |
…
| Interlace0Included | 1 |
| SameBurstLengths0 | 0 or 1 |
| TotalBurstLength0 | 0 or 10 |
Following field appearance zero, one or MultiplexesPerInterlace-1:
| |
4 |
| Interlace1Included | 1 |
| SameBurstLengths1 | 0 or 1 |
| TotalBurstLength1 | 0 or 10 |
Following field appearance zero, one or MultiplexesPerInterlace-1:
| |
4 |
| Interlace2lncluded | 1 |
| SameBurstLengths2 | 0 or 1 |
| TotalBurstLength2 | 0 or 10 |
Following field appearance zero, one or MultiplexesPerInterlace-1:
| |
4 |
| Interlace3lncluded | 1 |
| SameBurstLengths3 | 0 or 1 |
| TotalBurstLength3 | 0 or 10 |
Following field appearance zero, one or MultiplexesPerInterlace-1:
| |
4 |
…
Below four fields occur zero or one:
| PhysicalChannelCount | 7 |
| |
0 or 4 |
| |
0 or 4 |
| |
0 or 4 |
| Period | 0 or 2 |
| MainSlotLength | 0 or 2 |
| AssistantSlotLength | 0 or 2 |
Below two fields occur zero or PhysicalChannelCount:
| Interlace | 2 |
| |
4 |
In table 4, Interlace0Included, Interlace1Included, Interlace2Included and Interlace3Included field indicate whether that each interweaves and are used for BCMC service.For example, if the 0th interweave and be used for BCMCS, the Interlace0Included field is set to " 1 ", if but not using, it can be set to " 0 ".
The indication of MultiplexesPerInterlace field comprises the number of a multiplexed signals that interweaves, while BurstLength0, BurstLength1, BurstLength2 and the indication of BurstLength3 field correspond respectively to the right burst length of each interface-multiplexed signals.
The number of PhysicalChannelCount indication physical sub-channels, each is used to send a BCMCS logic channel by interface-multiplexed signals to definition, and the PayloadSize field is indicated the size of the payload of corresponding physical channel simultaneously.
Table 5 shows the example corresponding to the payload size of the reality of PayloadSize field value.
[table 5]
| The PayloadSize field | The payload size |
| 00 | 2048 |
| 01 | 3072 |
| 10 | 4096 |
| 11 | 5120 |
Refer again to table 4, the Period field value is defined as the cycle (at interval) when sending the first son grouping of corresponding physical packets.The MainSlotLength field is meant the slot length of the boss's grouping that adds the single cycle (at interval), and the AssistantSlotLength field is meant the slot length of the son grouping that the residue in the cycle (at interval) that adding is single is assisted simultaneously.
In the embodiment of Fig. 8, base station A, B, C and D have the PayloadSize field value of " 00 ", that is, and 2048, and the Period field value is 3.For example, if base station B, D is near (approaching) base station A, base station A has MainSlotLength=1 subsequently, AssistantSlotLength=0, base station B has MainSlotLength=1, AssistantSlotLength=1, D has MainSlotLength=1 with the base station, AssistantSlotLength=2.If base station D is enough far away so that it is not subjected to the influence of base station A, but only by base station B influence, base station D has MainSlotLength=2 subsequently, AssistantSlotLength=1.
Fig. 9 shows the illustrative methods that Packet Data Channel sends broadcasting/multiple access communication data of passing through according to second embodiment of the invention.Shown in second embodiment of Fig. 9, single interweaving comprises 4 multiplexed signalss, and the BCMCS logic channel be mapped to four and interweave-multiplexed signals is to (0,0), (0,1), (0,2), (0,3).That is, show and use the whole the 0th to interweave and transmit the method for data.Here, burst length is 1.
In the present embodiment, when the base station with good channel condition and bad channel condition is present in the single area jointly, carry out transfer of data based on base station with good channel condition.With reference to figure 9, not only to base station A, and send to base station B via the only relevant single son grouping of the 0th interleaved transmission, C and have the base station D of bad channel condition with the channel condition that can be said to be with good channel condition with single packet.
Simultaneously, for base station B with the channel condition that can be said to be, C, one or more the interweaving except the 0th interweaves is used to send one or more other different son groupings relevant with single grouping.That is, by interweave-multiplexed signals is to (0,0), (0,1), (0,2), (0,3) send the first son grouping, simultaneously by interweave-multiplexed signals is to (1,0), (1,1), (1,2), (1,3) send the second son grouping.Therefore, interweave-multiplexed signals is to (0,0), (0,1), (0,2), (0,3) constitutes main channel, and interweave-multiplexed signals is to (1,0), and (1,1), (1,2), (1,3) constitutes complement channel.
In a similar fashion, for the base station D with bad channel condition, one or more the interweaving except the 0th interweaves is used to send one or more other different son groupings relevant with single grouping.Here, because the channel condition of base station D poorer than base station B or C needs to send the sons relevant with single grouping a plurality of numbers and divides into groups.That is, by interface-multiplexed signals to (0,0), (0,1), (0,2), (0,3) send the first son grouping, pass through interface-multiplexed signals simultaneously to (1,0), (1,1), (1,2), (1,3) send the second son grouping, pass through interface-multiplexed signals simultaneously to (2,0), (2,1), (2,2), (2,3) send the 3rd son grouping.Therefore, interface-multiplexed signals is to (0,0), and (0,1), (0,2), (0,3) constitutes main channel, interface-multiplexed signals is to (1,0), and (1,1), (1,2), (1,3) constitutes first complement channel, and interface-multiplexed signals is to (2,0), (2,1), (2,2), (2,3) constitute second complement channel.
As mentioned above, in identical area, from whole base stations by identical interface-multiplexed signals (main channel) sent identical BCMCS logical channel data at first, and, can also use additional interface-multiplexed signals that (complement channel) sent data according to channel condition in each base station.Here, the sub-packet index that sends by complement channel can be to set up by the son grouping after the son grouping that sends via main channel or previous (early) complement channel, or by during the BCMCS setting up procedure from the signaling reception of base station.
Simultaneously,, can have the big or small difference of slot offset value K that is about the transmission time started point between the son grouping of identical grouping about main channel and complement channel, and can be from the base station by the information of signaling transmission about K.
With reference to figure 9, main channel and complement channel send each son grouping with the data rate of 1.2288Mbps respectively.For base station B or C, send the first son grouping by main channel, and send the second son grouping by first complement channel.As shown in Figure 9, slot offset is 5, and is sending each relevant with different grouping respectively son grouping P00, and P10 after the P20, sends additional son grouping P01, P11, P21 at 5 time slots respectively after the sub-transmitted in packets time point formerly.
In the present embodiment, because base station B and C send the complement channel except that main channel, the effective data rate of total broadcasting is considered to 614.4kbps.For base station D, this example shows the first son grouping that sends by main channel, by second son grouping of first complement channel transmission and the 3rd sub-grouping that sends by second complement channel.Here, first complement channel by using 5 slot offset and use second complement channel of 6 slot offset, by sending two complement channels, the effective data rate of total broadcast channel can be considered to 409.6kbps.
As the 3rd embodiment based on Fig. 8, base station A, B and C are near (approaching) base station D, and mobile radio station is currently located at the borderline region of base station.Send therein in the slot time of P00, send identical BCMCS logic channel because carry out whole base stations of BCMC service, mobile radio station can and be carried out its decoding in conjunction with the son grouping that sends from each base station.Yet, send therein in the interval of P02, only must decoding divide into groups from the son that base station D sends.
As the 4th embodiment based on Fig. 9, be arranged in the mobile radio station in the area of base station D, receive the first son grouping relevant from whole base stations, and it can be decoded under combined situation with each grouping.Yet for the second son grouping, only combination is from base station B, and the son grouping that C and D send is also carried out thereon and decoded, and for the 3rd son grouping, only the son grouping that sends from base station D is used for decoding.
Therefore, for sending in the middle of the single BCMCS logic channel distributed time slot, need by neighbor base station transmit the information relevant with using which time slot to mobile radio station to send sub the grouping.For this reason, when sending the BCMCS logic channel, about mobile radio station from its receive the son grouping and and its carry out whole base stations of soft combination, can send with which base station in which time slot, send the sub relevant information of dividing into groups by signaling.
In Fig. 9, when base station A sends the data of the data that are different from base station B and C via time slot " d " or " e ", consider and the interference of the data that send from other base stations via these time slots, and can control the transmitting power of base station A.That is, can be different by its transmitting power that sends the time slot of identical BCMCS data and the time slot that sends other data by it.Send the transmitting power of time slot of BCMCS data and difference or the ratio that sends between the transmitting power of time slot of other data and can be sent to mobile radio station by signaling.
Figure 10 shows the exemplary process diagram that is used for receiving at mobile radio station broadcasting/multiple access communication data.It is only to use main channel to be used to transmit the base station of data or use complement channel to be used to transmit the information (S81) of the base station of data in addition that this mobile radio station receives from the base station about it.Check this base station information (S82), and if the base station of only using main channel to be used to transmit data, it does not wait for the son grouping that sends by complement channel, and the grouping (S83) that receives of decoding.For the base station that sends the son grouping by main channel together with complement channel, the grouping of determining to decode immediately and receiving, perhaps should equal under the situation of time cycle of slot offset K, after in conjunction with the son grouping that sends by complement channel, carry out decode (S84) in wait.
Use main channel normally to have the base station of bad channel condition together with the base station of complement channel.Therefore, because when decoding the grouping that receives immediately, have high probability of failure, may be useful in the waste of the resource of decoding.Yet, if the instantaneous decoding of the grouping that receives is successful, can omit the son grouping that wait sends by complement channel, in conjunction with the process of son grouping that receives and execution decoding thereon, thus can be more efficient.Thus, even mobile radio station is that the base station sends in the area of data by using complement channel therein, determines whether decode immediately the grouping that receives and do not wait for the son grouping that sends by complement channel.If determine the grouping decode and to receive, carry out decoding (S85), and check whether success (S86) of decoding subsequently.In addition, carry out and the combining and execution its decoding (S89) of the grouping that receives.Simultaneously, if the definite grouping that should not decode immediately and receive, the grouping (S87) that storage receives, and by the complement channel grouping of reception (S88).Subsequently, carry out and the combining and execution its decoding (S89) of the grouping that receives.
For realizing above-mentioned various feature, the present invention can adopt various types of hardware and/or component software (module).For example, the different hardware module can comprise required various circuit and the assembly of step of carrying out said method.Simultaneously, different software module (being carried out by processor and/or other hardware) can comprise required various codes and the agreement of step of carrying out the inventive method.
Figure 11 shows the exemplary configurations of the mobile radio station of supporting feature of the present invention.Mobile radio station 1100 can comprise the transceiver 1110 of transmission and received signal and data, stores memory of data 1130 and processor 1120 therein, and itself and transceiver 1110 and memory 1130 collaborative works are to handle the processing procedure of various needs.Here, this processor 1120 can comprise different hardware and/or component software (module), such as the soft combination module 1122 of supporting signal processing.Permission can be listened, and is visible, and/or the input unit 1140 of the input of sense of touch (for example, microphone, keypad, function button, touch sensitive input devices or the like) and provide and can listen, visible, and/or the output unit 1150 of the output of sense of touch (for example, loud speaker, display unit, touch-screen, vibration unit or the like) also be the part of portable terminal 1100 of the present invention.
The invention provides a kind of point-to-multipoint method of servicing that is used to have the communication system of at least one access network and a plurality of terminals, this method comprises: the sector that configuration access network so that allow sends in the identical area of identical logic channel adopts the different data rates that send to be used for transmission of data packets; Provide this point-to-multipoint to serve each terminal with the different transmission data rate of use.
Here, this configuration step can comprise and adopt the transformat of being correlated with different transmission data rates, and wherein, this transformat is a rate-compatible each other.Different transmission data rates can be based on the channel condition separately of each sector.Access network can comprise the one or more base stations relevant with each sector.Each sector can be relevant with base station or sub-district.
Provide step to comprise and use transformat to send grouping with time slot, wherein, the transmission time of first time slot of each grouping synchronously in the whole sectors that send identical logic channel.The transformat with a time slot span can be adopted in a sector, and the transformat of the rate-compatible with three time slot spans is adopted in other sectors simultaneously.The transformat of the span with first timeslot number can be adopted in a sector, and the transformat of the rate-compatible of the span with second timeslot number is adopted in other sectors simultaneously.First and second timeslot numbers can be identical or can be different.
This provides step to comprise and sends the broadcasting overhead message of regulation by the transformat of typical sector use.Transformat can adopt the field that is used to indicate the cycle, and wherein, this cycle is meant the number about the right time slot between the continuous transmission of grouping of given interweaving-multiplexed signals.The value of field can be more than or equal to the span of transformat.Can adopt at least one remaining time slots in the cycle relevant with sector for the single channel broadcast transmitted.
Configuration step can comprise that the channel condition according to each base station distributes the one or more base stations of variable transmission data rate to adjacent sectors independently.
And, the invention provides a kind of point-to-multipoint method of servicing that is used to have the communication system of at least one access network and a plurality of terminals, this method comprises: the configuration access network is so that the sector in identical area forms the relevant purpose of fixing a number really with single packet sub grouping; With send the relevant purpose grouping of fixing a number really with single grouping from each sector, wherein, this son that ascertains the number divides into groups definite independently by each sector.
Can send the son grouping in constant interval.If sector sends the son grouping less than maximum number during given interval, send the one or more son groupings irrelevant with single packet by a sector.This maximum number is based on the transmission performance of poor sector.The son grouping that sector sends less than maximum number means that this sector sends the son littler than at least one different number of sectors and divides into groups.Dispatched therein under the situation of dispatching in the time slot of the additional son grouping relevant, sent no climax grouping during the given interval with single grouping.The additional son grouping of the single grouping that no climax grouping replacement will send during given interval.
Configuration step can adopt the transformat relevant with different transmission data rates, and wherein, this transformat is a rate-compatible each other, and the different channel condition separately that sends data rate based on each sector.
This forwarding step can adopt the transformat with time slot, wherein, and the transmission time of first time slot of each grouping synchronously in the whole sectors that send identical logic channel.The transformat of the span with a time slot is adopted in a sector, and the transformat of the rate-compatible of the span with three time slots is adopted in other sectors simultaneously.Transformat can adopt the field that is used to indicate the cycle, and wherein, this cycle is meant about the number of given interweaving-multiplexed signals to the time slot between the continuous transmission of grouping.The value of field can be more than or equal to the span of transformat.The number of the son grouping that sends from least two different sectors is different or identical.
In addition, the invention provides and support point-to-multipoint service and the terminal of communicating by letter with access network, this terminal comprises: transceiver, it receives from one or more sub-districts and a relevant purpose grouping of fixing a number really of specific grouping, receive identical son grouping thus if necessary from two or more sub-districts, each sub-district sends one or more son groupings during the time cycle of determining; And processor, its with the transceiver collaborative work to carry out the soft combination of the identical son grouping that receives via transceiver from two or more sub-districts.
Make by access network with a relevant purpose grouping of fixing a number really of specific grouping, dispose this access network so that the son grouping that ascertains the number is made in the sub-district in identical area, wherein, this son that ascertains the number grouping is determined independently by each sub-district.In the middle of the sub-district that sends the son grouping, the poorest sub-district with the worst channel condition sends a plurality of son groupings during the time cycle of determining.The sub-district of permission except the poorest sub-district sends during the time cycle of determining and the data that specific grouping is irrelevant, and this poorest sub-district sends its a plurality of son groupings simultaneously.Download relevant with single channel broadcast mode reception data and this data with FTP.
And, the sub-district is relevant with the base station, and the further collaborative work of transceiver and processor so that, transceiver is from the one or more initial son grouping that the base station receives and single packet is relevant of the initial number relevant with soft combination, with the one or more additional son grouping of being correlated with single grouping from the base station reception of the additional number relevant with soft combination; And processor, it carries out the son grouping of decoding and receiving from the base station under the situation of soft combination thereon, wherein, adjust the base station of this initial number and the base station of the number that adds neatly based on each channel condition by processor.
Transceiver comprises about send the broadcasting overhead message of the information of how many son groupings from each base station relevant with soft combination to receive from serving BS with the further collaborative work of processor.
The present invention further provides a kind ofly by receiving the point-to-multipoint service method with the terminal of a plurality of base station communications that comprise serving BS and adjacent base station, this method comprises: receive one or more first sons relevant with single packet from the base station of first number relevant with soft combination and divide into groups; Receive the one or more second son groupings relevant from the base station of second number relevant with single grouping with soft combination; With the son grouping that decoding under the situation of it being carried out soft combination receives from the base station, wherein, it is variable that first number of base station and second number of base station are based on the channel condition of relevant base station.
This method may further include step: receive the one or more ns grouping relevant with single grouping from relevant with soft combination n base station, wherein, the first, the second and n base station channel condition of being based on relevant base station variable.This method may further include, before receiving step: receive the broadcasting overhead message that comprises about the information of dividing into groups from each how many sons of base station transmission relevant with soft combination from serving BS.This method may further include: if serving BS sends the son grouping littler than other adjacent base station numbers, prepare the unicast data that sends by any remaining time slots from serving BS to receive.
Described so far, about the various replacements in technical protection scope of the present invention that it will be appreciated by those skilled in the art that of the field of the invention, it is possible revising and changing, and exemplary embodiment that is not limited to here describe and accompanying drawing.
As for the result of the present invention and the effect of some expectation, when the data (for example, broadcasting) that send from each base station corresponding to identical logic channel, can improve data transmission efficiency with respectively different channel conditions (environment).
The embodiment of these specification descriptions multiple declaration of the present invention.The scope of claim is intended to cover various modifications and the equivalent arrangements of disclosed illustrative embodiment in the specification.Therefore, following claim should meet the modification of disclosed spirit of the present invention and protection range, equivalent structure, and feature here with covering according to reasonably wide explanation.
Claims (38)
1. point-to-multipoint method of servicing that is used to have the communication system of at least one access network and a plurality of terminals, this method comprises;
The configuration access network is so that the sector that allow to send in the identical area of identical logic channel adopts different transmission data rates to be used for transmission of data packets; With
Use different transmission data rates to provide this point-to-multipoint to serve each terminal.
2. method as claimed in claim 1, wherein, this configuration step comprises:
Adopt the transformat of being correlated with different transmission data rates, wherein this transformat is a rate-compatible each other.
3. method as claimed in claim 2, wherein, this difference sends separately the channel condition of data rate based on each sector.
4. method as claimed in claim 3, wherein, this access network comprises the one or more base stations relevant with each sector.
5. method as claimed in claim 3, wherein, this each sector is relevant with base station or sub-district.
6. method as claimed in claim 2, wherein, this provides step to comprise:
The transformat that use has time slot sends grouping, wherein, and the transmission time of first time slot of each grouping synchronously in the whole sectors that send identical logic channel.
7. method as claimed in claim 6, wherein, the transformat of the span with a time slot is adopted in a sector, and the transformat of the rate-compatible of the span with three time slots is adopted in other sectors simultaneously.
8. method as claimed in claim 6, wherein, the transformat of the span with first timeslot number is adopted in a sector, and the transformat of the rate-compatible of the span with second timeslot number is adopted in other sectors simultaneously.
9. method as claimed in claim 8, wherein, this first and second timeslot number can be identical or can be different.
10. method as claimed in claim 1, this provides step to comprise:
Send the broadcasting overhead message of specifying the transformat that uses by typical sector.
11. as the method for claim 10, wherein, this transformat is used to indicate the field in cycle, wherein, this cycle is meant about the number of given interweaving-multiplexed signals to the time slot between the continuous transmission of grouping.
12. as the method for claim 11, wherein, the value of this field is more than or equal to the span of transformat.
13., wherein, adopt at least one remaining time slots in the cycle relevant for the single channel broadcast transmitted with sector as the method for claim 11.
14. method as claimed in claim 1, wherein, this configuration step comprises:
Channel condition according to each base station distributes the one or more base stations of variable transmission data rate to adjacent sectors independently.
15. a point-to-multipoint method of servicing that is used to have the communication system of at least one access network and a plurality of terminals, this method comprises:
The configuration access network is so that the sector in identical area forms the relevant purpose grouping of fixing a number really with single packet; With
Send the relevant purpose grouping of fixing a number really with single grouping from each sector, wherein, this son that ascertains the number grouping is determined independently by each sector.
16., wherein, send the son grouping in constant interval as the method for claim 15.
17., wherein,, send the one or more son groupings irrelevant with single grouping by a sector if sector sends the son grouping less than maximum number during given interval as the method for claim 16.
18. as the method for claim 17, wherein, this maximum number is based on the transmission performance of poor sector.
19. as the method for claim 17, wherein, the son grouping that this sector sends less than maximum number means that this sector sends the son grouping littler than at least one different number of sectors.
20., wherein, will dispatch therein under the situation of dispatching in the time slot of the additional subpackets relevant as the claim method as claim 17, during given interval, send no climax grouping with single packet.
21. as the method for claim 17, wherein, the additional subpackets of the single packet that this no climax grouping replacement will send during given interval.
22. as the method for claim 15, wherein, this configuration step adopts the transformat relevant with different transmission data rates, wherein, this transformat is a rate-compatible each other, and different transmission data rate is based on the channel condition separately of each sector.
23. as the method for claim 15, wherein, this forwarding step adopts the transformat with time slot, wherein, and the transmission time of first time slot of each grouping synchronously in the whole sectors that send identical logic channel.
24. as the method for claim 23, wherein, the transformat of the span with a time slot is adopted in a sector, the transformat of the rate-compatible of the span with three time slots is adopted in other sectors simultaneously.
25. as the method for claim 24, wherein, this transformat is used to indicate the field in cycle, wherein, this cycle is meant about the number of given interweaving-multiplexed signals to the time slot between the continuous transmission of grouping.
26. as the method for claim 25, wherein, the value of this field is more than or equal to the span of transformat.
27. as the method for claim 15, wherein, the number of the son grouping that sends from least two different sectors is different or identical.
28. support point-to-multipoint service and the terminal of communicating by letter with access network for one kind, this terminal comprises:
Transceiver, it receives from one or more sub-districts and a relevant purpose grouping of fixing a number really of specific grouping, receive identical son grouping thus if necessary from two or more sub-districts, each sub-district sends one or more son groupings during the time cycle of determining; With
Processor, its with the transceiver collaborative work to carry out the soft combination of the identical son grouping that receives via transceiver from two or more sub-districts.
29. terminal as claim 28, wherein, make by access network with a relevant purpose grouping of fixing a number really of specific grouping, dispose this access network so that the son grouping that ascertains the number is made in the sub-district in identical area, wherein, this son that ascertains the number grouping is determined independently by each sub-district.
30. as the claim terminal, wherein, in the middle of the sub-district that sends the son grouping, the poorest sub-district with the most bad channel condition sends a plurality of son groupings during the time cycle of determining as claim 28.
31. as the terminal of claim 30, wherein, allow the sub-district except the poorest sub-district to send during the time cycle of determining and the data that specific grouping is irrelevant, this poorest sub-district sends its a plurality of son groupings simultaneously.
32. as the terminal of claim 31, wherein, these data are that receive with the single channel broadcast mode and relevant with the FTP download.
33. as the terminal of claim 28, wherein, this sub-district is relevant with the base station, and transceiver and the further collaborative work of processor so that,
Transceiver receives the one or more initial son grouping relevant with single packet from the base station of the initial number relevant with soft combination, and receives the one or more additional son grouping relevant with single packet from the base station of the additional number relevant with soft combination; With
Processor, the son grouping that it receives from the base station in decoding under the situation of carrying out soft combination in the son grouping,
Wherein, adjust the initial number of base station and the additional number of base station by processor neatly based on each channel condition.
34. as the terminal of claim 28, wherein, this transceiver comprises about send the broadcasting overhead message of the information of how many son groupings from each base station relevant with soft combination to receive from serving BS with the further collaborative work of processor.
35. one kind receives the point-to-multipoint service method by terminal, this terminal and a plurality of base station communications that comprise serving BS and adjacent base station, and this method comprises:
Receive the one or more first son groupings relevant from the base station of first number relevant with single packet with soft combination;
Receive the one or more second son groupings relevant from the base station of second number relevant with single packet with soft combination; With
Carry out the son grouping of decoding and receiving under the situation of soft combination from the base station in the antithetical phrase grouping,
Wherein, it is variable that second number of first number of base station and base station is based on the channel condition of relevant base station.
36. as the claim method, further comprise step as claim 35:
Receive the one or more ns grouping relevant with single packet from the n relevant base station with soft combination, wherein, the first, the second and n base station channel condition of being based on relevant base station variable.
37. the method as claim 35 further comprises, before receiving step:
Receive the broadcasting overhead message that comprises about the information of dividing into groups from each how many sons of base station transmission relevant with soft combination from serving BS.
38. the method as claim 37 further comprises:
If serving BS sends the son grouping littler than other adjacent base station numbers, prepare the unicast data that sends by any remaining time slots from serving BS to receive.
Applications Claiming Priority (7)
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| KR10-2005-0009670 | 2005-02-02 | ||
| KR20050009670 | 2005-02-02 | ||
| KR1020050009670 | 2005-02-02 | ||
| KR10-2005-0050368 | 2005-06-13 | ||
| KR20050050368 | 2005-06-13 | ||
| KR1020050050368 | 2005-06-13 | ||
| PCT/KR2006/000374 WO2006083121A1 (en) | 2005-02-02 | 2006-02-02 | Method for transmitting and receiving data |
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| Publication Number | Publication Date |
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| CN101112015A true CN101112015A (en) | 2008-01-23 |
| CN101112015B CN101112015B (en) | 2014-05-14 |
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| CN200680003620.4A Expired - Fee Related CN101112015B (en) | 2005-02-02 | 2006-02-02 | Method for transmitting and receiving data |
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| ZA (1) | ZA200706308B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102224746A (en) * | 2008-12-04 | 2011-10-19 | 高通股份有限公司 | Supporting multicast communications in sectors that border adjacent subnets within a wireless communications system |
| CN112436900A (en) * | 2020-10-30 | 2021-03-02 | 中国石油天然气集团有限公司 | Data transmission method and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7177299B2 (en) * | 2002-04-24 | 2007-02-13 | Ericsson Inc. | Wireless communications apparatus, methods and computer program products using broadcast control channel messaging |
| KR100630093B1 (en) * | 2003-02-25 | 2006-09-27 | 삼성전자주식회사 | Method for providing the multicast service by the scheme based on carrier to interference in the hierarchical cell structure |
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- 2006-02-02 CN CN200680003620.4A patent/CN101112015B/en not_active Expired - Fee Related
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102224746A (en) * | 2008-12-04 | 2011-10-19 | 高通股份有限公司 | Supporting multicast communications in sectors that border adjacent subnets within a wireless communications system |
| CN112436900A (en) * | 2020-10-30 | 2021-03-02 | 中国石油天然气集团有限公司 | Data transmission method and device |
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| ZA200706308B (en) | 2009-09-30 |
| CN101112015B (en) | 2014-05-14 |
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