CN101112015B - Method for transmitting and receiving data - Google Patents
Method for transmitting and receiving data Download PDFInfo
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- CN101112015B CN101112015B CN200680003620.4A CN200680003620A CN101112015B CN 101112015 B CN101112015 B CN 101112015B CN 200680003620 A CN200680003620 A CN 200680003620A CN 101112015 B CN101112015 B CN 101112015B
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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 for improve the method for data transmission efficiency during corresponding to the data of identical logic channel when each base station broadcast from thering is respectively different channels environment.
Background technology
Supporting in the mobile communication system of broadcast/multicast service, except speech data, need to send the multi-medium data that comprises image, need thus high data rate.Therefore,, for broadcast/multicast service is provided, the Packet Data Channel of physical layer should be able to be supported high data rate.
Exist therein in the wireless environment of decay, in order to send multi-medium data in stable mode by Packet Data Channel, application mix arq (HARQ) scheme.HARQ is in conjunction with forward error correction (FEC) and arq (ARQ) technology.
This HARQ scheme will be explained as follows in more detail.First,, for the data that send, the channel encoder (for example, turbo encoder) by use with error correction is carried out coding, and transmission one or more subgroups relevant to single packet.
In the time sending the first subgroup from transmitting terminal, carry out decoding at the receiving terminal that receives the first subgroup.If successfully carry out decoding, will reply (ACK) signal and send to transmitting terminal.Meanwhile, if not success of the decoding of the first subgroup receiving will deny that (NACK) signal feedback is to transmitting terminal.
At transmitting terminal, if receive ack signal, send first subgroup relevant to grouping subsequently.If receive NACK signal, send second subgroup relevant to the grouping sending.At receiving terminal, the first subgroup is stored in buffer, and in the time sending the second subgroup, in conjunction with the first and second subgroups execution decoding, the success rate of decoding can be increased.
Fig. 1 shows and realizes the illustrative methods of HARQ to block interleaved structure.With reference to figure 1, can by use each interweaves and can realize for sending the channel of grouped data with the structure that the time interval of determining repeats regularly thus.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.In the time determining interweaving of sending, divide into groups accordingly by this definite interleaved transmission.This will be described in more detail below.
In Fig. 1, for the 0th grouping, the first subgroup is P00, and the second subgroup is P01, and the 3rd subgroup is P02, and the 4th subgroup is P03.For the first grouping, the first subgroup is P10.
As shown in Figure 1, suppose by using the 0th interleaved transmission the 0th grouping.From transmitting terminal, first subgroup relevant to the 0th grouping arrived receiving terminal via the 0th interleaved transmission.In the situation that receiving terminal receives and decode the first subgroup, if it is unsuccessful to decode, NACK signal feedback is arrived to transmitting terminal.At transmitting terminal, in the time receiving NACK signal, the 0th interweaves for sending second subgroup relevant to the 0th grouping to receiving terminal.In the time receiving the second subgroup, receiving terminal is in conjunction with the second subgroup and be stored in the first subgroup the execution decoding in buffer.However,, if decoding is still unsuccessful, NACK signal feedback is arrived to transmitting terminal.
At transmitting terminal, in the time receiving NACK signal, the 0th interweaves again for sending three subgroup relevant to the 0th grouping to receiving terminal.Repeatedly carry out these processes until receive ack signal, or until arrive threshold number.Above-mentioned, by using identical interleaved transmission and single each relevant subgroup.
When send broadcast/multiple access communication data by Packet Data Channel, above-mentioned ACK/NACK feedback does not exist.This is to cause because of the characteristic of the one-to-many communication of the characteristic as broadcast/multicast service.Therefore,, in the time sending broadcast/multiple access communication data, because can not receive independent ack/nack signal about each mobile radio station, must determine that transformat has with any mobile radio station that makes to be present in specific community the quality of reception that is greater than definite threshold value.This transformat comprises data rate, payload size, the number of the subgroup of transmission, modulator approach of use etc.In the time determining transformat, broadcast/multicast service is carried out according to definite transformat in each base station.
Fig. 2 shows the exemplary types that the data rate that can provide when payload size and modulator approach are fixed is simultaneously provided when the number of subgroup.Here suppose that payload size is 2048, and subgroup Transmission Time Interval is 1/600 second.As shown in Figure 2, in the base station of the overall channel environment (condition) for having had, consider decay environment, interference environment, when radius of society etc., use the 0th to interweave once to send single packet, can for example, send broadcast/multiple access communication at high data rate (, 1.2288Mbps) thus and divide into groups.But, if overall channel environment (condition) is bad, use the 0th to interweave 4 times to send single packet, can transmit at low speed data thus (for example, 307.2kbps) and send broadcast/multiple access communication grouping.
Send broadcast/multiple access communication data via the Packet Data Channel with pilotaxitic texture, and each interweaves and has at least one multiplexed signals.Preferably, single interweaving comprises 4,8, or 16 multiplexed signalss.Thus, interweave-multiplexed signals interweaves which interior multiplexed signals for sending grouping to which is used to indicate.
For each interweaving-multiplexed signals pair, there is the burst length associated with it.Determine burst length by the number that is multiplied by the grouping that each pulse train sends according to the number of the subgroup of each grouping of transmitted data rates.Interweave-multiplexed signals is to taking continuously the specific interval of the same interlace that equals burst length.Therefore the Packet Data Channel that, sends broadcast/multiple access communication data by it comprises the subchannel to definition by interweave-multiplexed signals.This base station maps comprises interweave to an at least one-multiplexed signals pair of logic channel of at least one broadcast/multicast service (BCMCS) stream.
Table 1 shows and comprises and interweave-multiplexed signals pair, burst length, the example of the overhead signaling message of the information relevant with the number of the subgroup of each grouping.
[table 1]
| Field | Length (position) |
…
| Interlace0Included | 1 |
| SameBurstLengths0 | 0 or 1 |
| TotalBurstLength0 | 0 or 10 |
Field appearance zero, below or MultiplexesPerInterlace-1:
| BurstLength0 | 4 |
| Interlace1Included | 1 |
| SameBurstLengths1 | 0 or 1 |
| TotalBurstLength1 | 0 or 10 |
Field appearance zero, below or MultiplexesPerInterlace-1:
| BurstLength1 | 4 |
| |
1 |
| |
0 or 1 |
| |
0 or 10 |
Field appearance zero, below or MultiplexesPerInterlace-1:
| Burstlength2 | 4 |
| Interlace3Included | 1 |
| SameBurstLengths3 | 0 or 1 |
| TotalBurstLength3 | 0 or 10 |
Field appearance zero, below or MultiplexesPerInterlace-1:
| BurstLength3 | 4 |
…
Four fields occur zero or one below:
| PhysicalChannelCount | 7 |
| |
0 or 4 |
| |
0 or 4 |
| MACPacketsPerECBRow | 0 or 4 |
Two fields occur zero or PhysicalChannelCount below:
| Interlace | 2 |
| Multiplex | 4 |
In table 1, Interlace0Included, Interlace1Included, Interlace2Included, and which Interlace3Included field indicates interweave to serve for BCMC.For example, if the 0th interweaved for BCMCS, be set to " 1 " corresponding to the 0th Interlace0Included field interweaving, if but not using, it can be set to " 0 ".
The indication of MultiplexesPerlnterlace field comprises the number of a multiplexed signals interweaving.
And, BurstLength0, BurstLength1, BurstLength2, and the BurstLength3 field indication right burst length of interweave-multiplexed signals that corresponds respectively to each.
In addition, the number of PhysicalChannelCount field indication physical sub-channels, subchannel refers to the interweave-multiplexed signals pair for sending a BCMCS logic channel thus.
DataRate field is indicated the data rate of corresponding physical channel.Here according to this data-rate value, determine the size of the grouping sending by corresponding physical channel and the number of the time slot that grouping of transmission needs.
Table 2 shows according to the DataRate field value of table 1 and sends the example of the data rate of the number of the time slot of the grouping needs that send by corresponding physical channel.
[table 2]
| DataRatexxx field | Data rate | The time slot of every broadcast physical layer grouping |
| ′0000′ | 38.4kbps | 16 |
| ′0001′ | 76.8 |
8 |
| ′0010′ | 153.6kbps | 4 |
| ′0011′ | 204.8kbps | 3 |
| ′0100′ | 307.2kbps | 2 |
| ′0101′ | 308.2kbps | 4 |
| ′0110′ | 409.6kbps | 3 |
| ′0111′ | 614.4 |
1 |
| ′10001 | 614.4kbps | 2 |
| ′1001′ | 921.6kbps | 2 |
| ′1010′ | 12288.8 |
1 |
| ′1011′ | 12288.8kbps | 2 |
| ′1100′ | 1843.2 |
1 |
| ′1101′ | 2457.6kbps | 1 |
| ' 1110 ' to ' 1111 ' | Retain | ? |
In table 1, which interweave-multiplexed signals interlaced fields and multiplexed signals field for notifying by sending the object of corresponding physical channel.Here, can by by burst length divided by calculating and the number of an interweave-multiplexed signals to relevant grouping to the number of a relevant time slot of grouping.
Fig. 3 shows the illustrative methods of use interface-multiplex pair structure transmission broadcast/multiple access communication data.When interface-multiplexed signals is when being represented as (interface number, multiplexed signals number), send broadcast/multiple access communication data by Packet Data Channel as shown in Figure 3.Here, Fig. 3 shows wherein each interface and has four multiplexed signalss, and each multiplexed signals burst length is one example.
Fig. 4 shows the exemplarily plot structure for broadcast/multicast service.Can provide broadcast/multicast service by the mode based on regional (regional A is to regional G).In the service based on regional, the area being taken by least one group of base stations is defined as a regional unit, and for each area, provides independently BCMCS stream as service.Therefore the identical logic channel that, there is identical BCMCS stream as the base station of an identical regional part in mapping to identical interface-multiplexed signals to time send.
Here, community can be the area based on ground characteristics definition, and sector can be the area based on characteristics of signals definition simultaneously.Meanwhile, one or more communities may be managed in base station, or one or more sector.Similarly, can say based on each community service is provided, provide service based on each sector, provide service etc. based on each base station.Below describe for simplicity and will only make a general reference the area wherein with community.
As above, in the time carrying out broadcast/multicast service based on regional, 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 sending from least one base station in identical area, and by combination and these groupings of decoding, can obtain diversity gain.
Fig. 5 shows the example that has respectively the community of different channels environment in single area for explaining.Picture community A, for being arranged in the mobile radio station of community of regional central area, receives the identical grouping sending from neighbor base station, and can obtain diversity gain.But as community B or community D, for the mobile radio station being arranged in regional peripheral community, other groupings that send from the community as other regional parts cause that interference and channel status (condition) may be bad thus.Meanwhile, as community C, although be positioned at regional central area, channel status (condition) is due to the environmental characteristics of community itself, due to ground, and building etc. and may be bad.
Therefore,, in the community of the channel status having had (such as community A), can send grouping with high data rate, such as 1.2288Mbps.But in the bad position (such as community B, C, or D) of channel status, for overcoming bad channel status, add redundant information and because need to send it repeatedly, only can send grouping with 614.4kbps or low data rate therein.
Fig. 6 shows according to the illustrative methods of the transmission broadcast/multiple access communication data of prior art.Interweave and comprise four multiplexed signalss with reference to 6, one, figure, and BCMCS logic channel is mapped to four interweave-multiplexed signalss to (0,0), (0,1), (0,2), (0,3)., show and use the whole the 0th to interweave and transmit the method for data.Here, burst length is 1.In the first embodiment, because burst length is 1, each grouping only sends a subgroup.Thus, although can send grouping with high data rate, be the problem of a type occurring about the service quality of deterioration of mobile radio station that is arranged in the community with bad channel status.
Fig. 7 shows according to another illustrative methods of the transmission broadcast/multiple access communication data of prior art.With reference to figure 7, single interweaving comprises four multiplexed signalss, and BCMCS logic channel is mapped to four interweave-multiplexed signalss to (0,0), (0,1), (0,2), (0,3)., 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 subgroups.Thus, in the structure based on regional, about the mobile radio station that is arranged in the community with bad channel status, can guarantee service quality in more stable mode, but low data rate is the problem of the another type of generation.
As mentioned above, when provide based on regional broadcast/multicast service time, can be different to the channel status of each community.But, if determine transformat based on specific community, there is the waste of radio (wireless) resource about each community, this can cause Efficiency Decreasing and lowering service quality.
Summary of the invention
One aspect of the present invention comprises the shortcoming of being identified prior art by the inventor, as mentioned above.Based on this identification, make the improvement to variable rate transmission method according to the present invention.
More particularly, the invention provides a kind of for thering is the point-to-multipoint method of servicing of communication system of at least one access network and multiple terminals, the method comprising the steps of, configuration access network adopts the different data rates that send for transmission of data packets with the sector that makes to allow to send in the identical area of identical logic channel, 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 base station based on the channel status method of broadcast packe effectively.
Other advantage, object and feature of the present invention will partly be set forth at following specification, afterwards, when having studied after following content or after having learnt practice of the present invention, in part degree of the present invention for those of ordinary skills, will become obviously, or 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.
Accompanying drawing explanation
Fig. 1 shows and realizes the illustrative methods of HARQ to block interleaved structure;
Fig. 2 shows the exemplary types that the data rate that can provide when payload size and modulator approach are fixed is simultaneously provided when the number of subgroup;
Fig. 3 shows the illustrative methods that uses interweave-multiplex pair structure to send broadcast/multiple access communication data;
Fig. 4 shows the exemplary area structure for broadcast/multicast service;
Fig. 5 shows the example that has respectively the community of different channels environment in single area for explaining;
Fig. 6 shows according to the illustrative methods of the transmission broadcast/multiple access communication data of prior art;
Fig. 7 shows according to another illustrative methods of the transmission broadcast/multiple access communication data of prior art;
Fig. 8 shows and sends the illustrative methods of broadcast/multiple access communication data according to first embodiment of the invention by Packet Data Channel;
Fig. 9 shows and sends the illustrative methods of broadcast/multiple access communication data according to second embodiment of the invention by Packet Data Channel;
Figure 10 shows the exemplary process diagram for receive broadcast/multiple access communication data at mobile radio station;
Figure 11 shows the example arrangement of the mobile radio station of supporting feature of the present invention.
Embodiment
The present invention is described as be implemented in 3GPP2 type mobile communication system, in 1xEV-DO mobile communication system.But, feature of the present invention for example can also adapt to and realize, with other types communication specification (, 3GPP, 4G, IEEE, OMA, etc.) in the communication system of work, because in concept 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 broadcast/multicast service (BCMCS), explain the present invention, but can being applied to, feature of the present invention provide multi-medium data to arrive various types of point-to-multipoint services of user, such as mbms service (MBMS), media broadcast, content transmission, etc.
Explain non-limiting exemplary embodiment of the present invention below with reference to accompanying drawing.
The invention provides a kind of data transmission and reception method, if the channel condition of the base station in identical area (state) is different respectively thus, this condition is considered to more effectively send (for example, broadcast) grouped data.
Fig. 8 shows and sends the illustrative methods of broadcast/multiple access communication data according to first embodiment of the invention by Packet Data Channel.As shown in Figure 8, single interweaving comprises 4 multiplexed signalss to the first embodiment, and BCMCS logic channel is mapped to four interweave-multiplexed signalss to (0,0), (0,1), (0,2), (0,3)., 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 if determined that burst length is 3, according to the channel condition of each base station, allow to determine independently respectively the number of the subgroup relevant to single packet.
That is, suppose at the channel condition of base station A finely, base station A is set to only send the single subgroup relevant to single packet, makes to send grouping with high data rate.
And, supposing at the channel condition of base station B or C and can be said to be, base station B or C are set to send two subgroups relevant to single packet, make to send grouping with relatively high data rate.
But, suppose at the channel condition of base station D badly, base station D is set to send three subgroups relevant to single packet, makes to divide into groups with low data rate transmission.
As mentioned above, the base station of the channel condition having had at those, sends grouping to increase thus efficiency of transmission with higher data rate, has the base station of bad channel condition at those simultaneously, sends grouping to guarantee thus the quality of reception with lower data speed.
Meanwhile, in the time that channel condition is good, such as at base station A, can via when send second and time interval when the 3rd subgroup send dissimilar data, increase thus efficiency of transmission.Here,, in the time sending the data of other types, the transmitting power of base station A is controlled in the interference of the data that can send from other base stations by consideration with via interweaving., can differently be provided for sending the time slot of BCMCS data and for sending the transmitting power of time slot of other data.Send BCMCS data time slot transmitting power and send difference between the transmitting power of time slot of other data or ratio can be passed signaling and sends to mobile radio station.
Table 3 shows the example of the overhead signaling message of the BCMC logic channel transmission method for supporting the first embodiment.
[table 3]
| Field | Length (position) |
…
| |
1 |
| |
0 or 1 |
| |
0 or 10 |
Field appearance zero, below or MultiplexesPerInterlace-1:
| BurstLength0 | 4 |
| |
1 |
| |
0 or 1 |
| |
0 or 10 |
Field appearance zero, below or MultiplexesPerInterlace-1:
| BurstLength1 | 4 |
| |
1 |
| |
0 or 1 |
| |
0 or 10 |
Field appearance zero, below or MultiplexesPerInterlace-1:
| Burstlength2 | 4 |
| |
1 |
| |
0 or 1 |
| |
0 or 10 |
Field appearance zero, below or MultiplexesPerInterlace-1:
| BurstLength3 | 4 |
…
Four fields occur zero or one below:
| PhysicalChannelCount | 7 |
| |
0 or 4 |
| |
0 or 4 |
| |
0 or 4 |
| |
0 or 2 |
Two fields occur zero or PhysicalChannelCount below:
| Interlace | 2 |
| Multiplex | 4 |
In table 3, Interlace0Included, Interlace1Included, Interlace2Included, and Interlace3Included field indicates whether that each interweaves and serves for BCMC.For example, if the 0th interweaved for BCMCS, 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 interweaving, BurstLength0 simultaneously, BurstLength1, BurstLength2, and the indication of BurstLength3 field corresponds respectively to the right burst length of each interface-multiplexed signals.
In addition, the number of PhysicalChannelCount field indication physical sub-channels, each is by interweave-multiplexed signals to defining for sending a BCMCS logic channel, and 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 sending by corresponding physical channel and the number of the time slot that grouping of transmission needs.
This interweaves and which interweave-multiplexed signals is multiplexed signals field indicate by sending corresponding physical channel.
In the first embodiment shown in Fig. 8, consider base station A as an example, send 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 shown to (calculating) adds the number of the right broadcast physical packets of single interweaving-multiplexed signals divided by the number of the time slot corresponding to single packet.
Therefore, need to send the information for obtaining the number that adds accordingly the right physical packets of interweave-multiplexed signals.Thus, as shown in table 3, can send this information via the Period field being included in broadcast overhead message.
If Period field value is defined as the cycle (interval) in the time sending the first subgroup of corresponding physical packets, can be by corresponding burst length is shown to (calculating) adds accordingly the number of the right physical packets of interweave-multiplexed signals divided by Period field value.
In the first embodiment, base station A has the data rate of 1.2288Mbps and sends broadcast physical packets via the first time slot.Meanwhile, base station B has the data rate of 614.4kbps and sends broadcast physical packets via the second time slot, and base station D has the data rate of 409.6kbps and sends broadcast physical packets via the 3rd time slot.For the whole base stations in Fig. 8, Period field value is 3.
Table 4 shows the example of the overhead signaling message of the BCMC logic channel transmission method for supporting the second embodiment.
[table 4]
| Field | Length (position) |
…
| |
1 |
| |
0 or 1 |
| |
0 or 10 |
Field appearance zero, below or MultiplexesPerInterlace-1:
| BurstLength0 | 4 |
| |
1 |
| |
0 or 1 |
| |
0 or 10 |
Field appearance zero, below or MultiplexesPerInterlace-1:
| BurstLength1 | 4 |
| |
1 |
| |
0 or 1 |
| |
0 or 10 |
Field appearance zero, below or MultiplexesPerInterlace-1:
| Burstlength2 | 4 |
| |
1 |
| |
0 or 1 |
| |
0 or 10 |
Field appearance zero, below or MultiplexesPerInterlace-1:
| BurstLength3 | 4 |
…
Four fields occur zero or one below:
| PhysicalChannelCount | 7 |
| |
0 or 4 |
| |
0 or 4 |
| |
0 or 4 |
| |
0 or 2 |
| |
0 or 2 |
| |
0 or 2 |
Two fields occur zero or PhysicalChannelCount below:
| Interlace | 2 |
| Multiplex | 4 |
In table 4, Interlace0Included, Interlace1Included, Interlace2Included, and Interlace3Included field indicates whether that each interweaves and serves for BCMC.For example, if the 0th interweaved for BCMCS, 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 interweaving, BurstLength0 simultaneously, BurstLength 1, BurstLength2, and the indication of BurstLength3 field corresponds respectively to the right burst length of each interface-multiplexed signals.
The number of PhysicalChannelCount indication physical sub-channels, each is used for sending a BCMCS logic channel by interface-multiplexed signals to definition, and PayloadSize field is indicated the size of the payload of corresponding physical channel simultaneously.
Table 5 shows the example corresponding to the actual payload size of PayloadSize field value.
[table 5]
| PayloadSize field | Payload size |
| 00 | 2048 |
| 01 | 3072 |
| 10 | 4096 |
| 11 | 5120 |
Refer again to table 4, Period field value is defined as the cycle (interval) in the time sending the first subgroup of corresponding physical packets.MainSlotLength field refers to the slot length of the boss grouping that adds single cycle (interval), and AssistantSlotLength field refers to the slot length that adds the auxiliary subgroup of the residue in single cycle (interval) simultaneously.
In the embodiment of Fig. 8, base station A, B, C, and D has the PayloadSize field value of " 00 ", that is, and 2048, and 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 base station, AssistantSlotLength=2.If base station D enough, far to make it not be subject to the impact of base station A, is still only affected by base station B, base station D has MainSlotLength=2 subsequently, AssistantSlotLength=1.
Fig. 9 shows and sends the illustrative methods of broadcast/multiple access communication data according to second embodiment of the invention by Packet Data Channel.As shown in the second embodiment of Fig. 9, single interweaving comprises 4 multiplexed signalss, and BCMCS logic channel is mapped to four interweave-multiplexed signalss to (0,0), (0,1), (0,2), (0,3)., show and use the whole the 0th to interweave and transmit the method for data.Here, burst length is 1.
In the present embodiment, in the time that the base station of the channel condition having had and bad channel condition is present in single area jointly, the base station performing data transmission of the channel condition based on having had.With reference to figure 9, via the 0th interleaved transmission only the single subgroup relevant to single packet not only to the base station A with good channel condition, and send to the base station B with the channel condition can be said to be, C, and there is the base station D of bad channel condition.
Meanwhile, for the base station B with the channel condition can be said to be, C, one or more the interweaving for sending one or more other different subgroups relevant from single grouping except the 0th interweaves., by interweave-multiplexed signals to (0,0), (0,1), (0,2), (0,3) sends the first subgroup, simultaneously by interweave-multiplexed signals to (1,0), (1,1), (1,2), (1,3) sends the second subgroup.Therefore, interweave-multiplexed signals is to (0,0), (0,1), (0,2), (0,3) forms main channel, and interweave-multiplexed signals is to (1,0), (1,1), (1,2), (1,3) forms complement channel.
In a similar fashion, for the base station D with bad channel condition, one or more the interweaving for sending one or more other different subgroups relevant from single grouping except the 0th interweaves.Here, because poorer than base station B or C of the channel condition of base station D need to send the subgroups relevant to single grouping multiple numbers.That is, by interface-multiplexed signals to (0,0), (0,1), (0,2), (0,3) sends the first subgroup, pass through interface-multiplexed signals to (1,0), (1,1) simultaneously, (1,2), (1,3) sends the second subgroup, pass through interface-multiplexed signals to (2,0), (2,1) simultaneously, (2,2), (2,3) send the 3rd subgroup.Therefore, interface-multiplexed signals is to (0,0), (0,1), (0,2), (0,3) forms main channel, interface-multiplexed signals is to (1,0), (1,1), (1,2), (1,3) forms the first complement channel, and interface-multiplexed signals is to (2,0), (2,1), (2,2), (2,3) form the second complement channel.
As mentioned above, in identical area, at first from whole base stations by identical interface-multiplexed signals, (main channel) sent to identical BCMCS logical channel data, and according to the channel condition in each base station, can also use additional interface-multiplexed signals to send data to (complement channel).Here, the subgroup index sending by complement channel can be by setting up in the subgroup via main channel or after the subgroup that previously (early) complement channel had sent, or receive by the signaling from base station during BCMCS setting up procedure.
Meanwhile, about main channel and complement channel, the transmission time started point between the subgroup of the grouping about identical can have the difference of size for slot offset value K, and can send the information about K from base station by signaling.
With reference to figure 9, main channel and complement channel send each subgroup with the data rate of 1.2288Mbps respectively.For base station B or C, send the first subgroup by main channel, and send the second subgroup by the first complement channel.As shown in Figure 9, slot offset is 5, and is sending each relevant to different grouping respectively subgroup P00, and P10 after P20, sends additional subgroup P01, P11, P21 at 5 time slots respectively after previous subgroup transmission time points.
In the present embodiment, because base station B and C send the complement channel except main channel, the effective data rate of total broadcast is considered to 614.4kbps.For base station D, this example shows the first subgroup sending by main channel, the second subgroup sending by the first complement channel, and the 3rd subgroup sending by the second complement channel.Here, by using the first complement channel of 5 slot offset, and use the 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 close (approaching) the base station D of C, 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 subgroup sending from each base station.But, send therein in the interval of P02 the subgroup that only must decode and send from base station D.
As the 4th embodiment based on Fig. 9, be arranged in the mobile radio station in the area of base station D, receive first subgroup relevant to each grouping from whole base stations, and it can be decoded combined in the situation that.But for the second subgroup, only combination is from base station B, the subgroup of C and D transmission is also carried out decoding thereon, and for the 3rd subgroup, is only used for decoding from the subgroup of base station D transmission.
Therefore, for sending in the middle of the time slot that single BCMCS logic channel distributes, need to by neighbor base station transmit the information relevant with using which time slot to mobile radio station with transmission subgroup.For this reason, in the time sending BCMCS logic channel, receive subgroup also and its whole base stations of carrying out soft combination about mobile radio station from it, can send in which time slot, to send at which base station the information that subgroup is relevant to by signaling.
In Fig. 9, in the time that base station A is different from the data of data of base station B and C via time slot " d " or " e " transmission, consider and the interference from the data of other base stations transmissions via these time slots, and can control the transmitting power of base station A.The transmitting power that, is sent the time slot of identical BCMCS data and sent the time slot of other data by it by it can be different.Send BCMCS data time slot transmitting power and send difference between the transmitting power of time slot of other data or ratio can be passed signaling and sends to mobile radio station.
Figure 10 shows the exemplary process diagram for receive broadcast/multiple access communication data at mobile radio station.It is only to use main channel for transmitting the base station of data or using in addition complement channel for transmitting the information (S81) of base station of data that this mobile radio station receives from base station about it.Check this base station information (S82), and if the base station that only uses main channel to be used for transmitting data, it does not wait for the subgroup sending by complement channel, and the grouping (S83) that receives of decoding.For the base station that sends subgroup by main channel together with complement channel, determine it is the grouping that decode immediately and receive, or the time cycle that should equal slot offset K in wait, at decode in conjunction with execution after the subgroup sending by complement channel (S84).
Use main channel normally to there is the base station of bad channel condition together with the base station of complement channel.Therefore,, because there is high probability of failure in the time decoding the grouping receiving immediately, may be useful in the waste of the resource of decoding.But, if the success of the instantaneous decoding of the grouping receiving can be omitted the subgroup that wait sends by complement channel, in conjunction with the subgroup receiving, and the process of execution decoding thereon, thus can be more efficient.Thus, even if mobile radio station is that base station, by using complement channel to send in the area of data, determines whether decode immediately the grouping that receives and do not wait for the subgroup sending by complement channel therein.If determine the grouping that decode and receive, carry out decoding (S85), and check subsequently whether success (S86) of decoding.Its decoding (S89) of the combination of the grouping of in addition, carrying out and receiving and execution.Meanwhile, if determine the grouping that should not decode immediately and receive, the grouping (S87) of storing received, and receive subgroup (S88) by complement channel.Its decoding (S89) of the combination of the grouping of subsequently, carrying out and receiving and execution.
For realizing above-mentioned various feature, the present invention can adopt various types of hardware and/or component software (module).For example, different hardware module can comprise required various circuit and the assembly of step of carrying out said method.Meanwhile, different software module (by processor and/or other hardware implements) can comprise required various codes and the agreement of step of carrying out the inventive method.
Figure 11 shows the example arrangement of the mobile radio station of supporting feature of the present invention.Mobile radio station 1100 can comprise the transceiver 1110 of sending and receiving signal and data, stores therein the memory 1130 of data, and processor 1120, and itself and transceiver 1110 and memory 1130 collaborative works are to process 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, visible, and/or the input unit 1140 of the input of sense of touch (for example, microphone, keypad, function button, touch sensitive input devices etc.) 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 etc.) be also a part for mobile terminal 1100 of the present invention.
The invention provides a kind ofly for having the point-to-multipoint method of servicing of communication system of at least one access network and multiple terminals, the method comprises: configuration access network adopts the different data rates that send for transmission of data packets with the sector that makes to allow to send in the identical area of identical logic channel; 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 relevant from different transmission data rates, and wherein, this transformat is rate-compatible each other.The different channel conditions separately that send data rates can be based on each sector.Access network can comprise the one or more base stations relevant to each sector.Each sector can be relevant to base station or community.
Provide step to comprise and use the transformat with time slot to send grouping, wherein, the transmission time of the first time slot of synchronous each grouping in the whole sectors that send identical logic channel.A sector can adopt the transformat with a time slot span, and other sectors adopt the transformat of the rate-compatible with three time slot spans simultaneously.A sector can adopt the transformat of the span with the first timeslot number, and other sectors adopt the transformat of the rate-compatible of the span with the second timeslot number simultaneously.The first and second timeslot numbers can be identical or can be different.
This provides step to comprise and sends the broadcast overhead message that stipulates the transformat being used by typical sector.Transformat can adopt the field in the cycle of being used to indicate, and wherein, this cycle refers to the number of the time slot the continuous transmission of grouping between right about 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 to sector for single channel broadcasting transmitting.
Configuration step can comprise according to the channel condition of each base station and distributes independently the one or more base stations of variable transmission data rate to adjacent sectors.
And, the invention provides a kind ofly for having the point-to-multipoint method of servicing of communication system of at least one access network and multiple terminals, the method comprises: configuration access network is to make identical regional sector form really fix a number object subgroup relevant to single packet; With send from each sector and the single relevant object subgroup of really fixing a number of grouping, wherein, this subgroup ascertaining the number is definite independently by each sector.
Can send subgroup in constant interval.If a sector sends the subgroup that is less than maximum number during given interval, send the one or more subgroups irrelevant with single packet by a sector.This maximum number is based on the transmission performance of poor sector.Sector sends the subgroup that is less than maximum number and means that this sector sends the subgroup less than at least one different number of sectors.Dispatch therein in the situation of dispatching in the time slot of the additional subgroup relevant to single grouping, during given interval, sent irrelevant subgroup.Irrelevant subgroup replaces the additional subgroup of the single grouping sending during given interval.
Configuration step can adopt the transformat relevant from different transmission data rates, and wherein, this transformat is rate-compatible each other, and the different channel condition separately of data rate based on each sector that send.
This forwarding step can adopt the transformat with time slot, wherein, and the transmission time of the first time slot of synchronous each grouping in the whole sectors that send identical logic channel.A sector adopts the transformat of the span with a time slot, and other sectors adopt the transformat of the rate-compatible of the span with three time slots simultaneously.Transformat can adopt the field in the cycle of being used to indicate, and wherein, this cycle refers to the number to the time slot between the continuous transmission in grouping about given interweaving-multiplexed signals.The value of field can be more than or equal to the span of transformat.The number of the subgroup sending from least two different sectors is different or identical.
In addition, the invention provides the terminal that support point is communicated by letter to multipoint service and with access network, this terminal comprises: transceiver, it receives from one or more communities and a relevant object subgroup of really fixing a number of specific grouping, receive identical subgroup from two or more communities if necessary thus, each community sends one or more subgroups during definite time cycle; And processor, itself and transceiver collaborative work are to carry out the soft combination of the identical subgroup receiving via transceiver from two or more communities.
Made by access network to a relevant object subgroup of really fixing a number of specific grouping, configure this access network to make identical regional community make the subgroup ascertaining the number, wherein, this subgroup ascertaining the number is determined independently by each community.In the middle of the community of transmission subgroup, the worst cell with the worst channel condition sends multiple subgroups during definite time cycle.Allow the community except worst cell during definite time cycle, to send and the irrelevant data of specific grouping, this worst cell sends its multiple subgroups simultaneously.Download relevant with single channel broadcast mode reception data and this data with FTP.
And, community is relevant to base station, and the further collaborative work of transceiver and processor is to make, transceiver receives the one or more initial subgroup relevant with single packet from the base station of the initial number relevant to soft combination, receives the one or more additional subgroup relevant with single grouping with the base station of the additional number from relevant to soft combination; And processor, its subgroup receiving from base station of decoding in the situation that carrying out soft combination thereon, wherein, adjusts the base station of this initial number and the base station of additional number by processor based on each channel condition neatly.
Transceiver and the further collaborative work of processor are to receive and to comprise about the broadcast overhead message that sends the information of how many subgroups from each base station relevant to soft combination from serving BS.
The present invention further provides a kind of by with the method for the terminal acceptance point of multiple base station communications that comprises serving BS and adjacent base station to multipoint service, the method comprises: receive one or more first subgroups relevant with single packet from the base station of the first number relevant to soft combination; Receive one or more second subgroups relevant with single grouping from the base station of the second number relevant to soft combination; With the subgroup that decoding receives from base station in the situation that it is carried out to soft combination, wherein, the first number of base station and the second number of base station are that the channel condition based on corresponding base station is variable.
The method may further include step: receive the one or more n subgroups relevant with single grouping from the base station of the n number relevant to soft combination, wherein, the first, the second, and n base station is that channel condition based on corresponding base station is variable.The method may further include, before receiving step: receive and comprise about the broadcast overhead message that sends the information of how many subgroups from each base station relevant to soft combination from serving BS.The method may further include: if serving BS sends the subgroup less than other adjacent base station numbers, prepare the unicast data sending by any remaining time slots from serving BS to receive.
Described so far, about the various replacements within the scope of technical protection of the present invention that it will be appreciated by those skilled in the art that of the field of the invention, revise, and to change be possible, and be not limited to exemplary embodiment described here and accompanying drawing.
As for result of the present invention and the effect of some expectation, for example, can improve data transmission efficiency when distinguishing from having when each base station of different channel conditions (environment) sends the data (, broadcast) corresponding to identical logic channel.
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 specification.Therefore, following claim should meet the modification of disclosed spirit of the present invention and protection range here, equivalent structure, and feature to cover according to reasonably wide explanation.
Claims (11)
1. for having the point-to-multipoint method of servicing of communication system at least one access network and multiple terminals, the method comprises;
Configuration access network adopts different transmission data rates for transmission of data packets with the sector that makes to allow to send in the identical area of identical logic channel; With
Use different transmission data rates to provide this point-to-multipoint to serve each terminal;
Wherein, this configuration step comprises and adopts the transformat relevant from different transmission data rates, and wherein this transformat is rate-compatible each other; And
Wherein, this provides step to comprise and uses the transformat transmission grouping with time slot, wherein, and the transmission time of the first time slot of synchronous each grouping in the whole sectors that send identical logic channel,
Wherein, the channel condition separately of described different transmission data rate based on each sector.
2. method as claimed in claim 1, wherein, this each sector is relevant with base station or community.
3. method as claimed in claim 1, wherein, a sector adopts the transformat of the span with a time slot, and other sectors adopt the transformat of the rate-compatible of the span with three time slots simultaneously.
4. method as claimed in claim 1, wherein, a sector adopts the transformat of the span with the first timeslot number, and other sectors adopt the transformat of the rate-compatible of the span with the second timeslot number simultaneously.
5. method as claimed in claim 4, wherein, this first and second timeslot number is identical or different.
6. method as claimed in claim 1, this provides step to comprise:
Send the broadcast overhead message of specifying the transformat being used by typical sector.
7. method as claimed in claim 6, wherein, this transformat is used to indicate the field in cycle, and wherein, this cycle refers to the number to the time slot between the continuous transmission in grouping about given interweaving-multiplexed signals.
8. method as claimed in claim 7, wherein, the value of this field is more than or equal to the span of transformat.
9. the method to multipoint service by terminal acceptance point, this terminal and the multiple base station communications that comprise serving BS and adjacent base station, the method comprises:
Receive one or more first subgroups relevant with single packet from the base station of the first number relevant to soft combination;
Receive one or more second subgroups relevant with single packet from the base station of the second number relevant to soft combination; With
The subgroup that decoding receives from base station in the situation that subgroup is carried out to soft combination, the one or more sectors of each BTS management, the sector that makes to allow to send in the identical area of identical logic channel adopts different transmission data rates for transmission of data packets
Wherein, the channel condition separately of described different transmission data rate based on each sector.
10. method as claimed in claim 9, further comprises step:
Receive the one or more n subgroups relevant with single packet from the n number base station relevant to soft combination, wherein, the first number, the second number, and n number is that channel condition based on corresponding base station is variable.
11. methods as claimed in claim 9, further comprise, before receiving step:
Receive and comprise about the broadcast overhead message that sends the information of how many subgroups from each base station relevant to soft combination from serving BS.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20050009670 | 2005-02-02 | ||
| KR1020050009670 | 2005-02-02 | ||
| KR10-2005-0009670 | 2005-02-02 | ||
| KR1020050050368 | 2005-06-13 | ||
| KR10-2005-0050368 | 2005-06-13 | ||
| KR20050050368 | 2005-06-13 | ||
| PCT/KR2006/000374 WO2006083121A1 (en) | 2005-02-02 | 2006-02-02 | Method for transmitting and receiving data |
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| CN101112015A CN101112015A (en) | 2008-01-23 |
| CN101112015B true CN101112015B (en) | 2014-05-14 |
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| US20100142428A1 (en) * | 2008-12-04 | 2010-06-10 | Qualcomm Incorporated | Supporting multicast communications in sectors that border adjacent subnets within a wireless communications system |
| CN112436900B (en) * | 2020-10-30 | 2022-10-04 | 中国石油天然气集团有限公司 | Data transmission method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2003092320A1 (en) * | 2002-04-24 | 2003-11-06 | Ericsson Inc. | Wireless communications apparatus, methods and computer program products using broadcast control channel messaging |
| CN1531368A (en) * | 2003-02-25 | 2004-09-22 | ���ǵ�����ʽ���� | Method for providing more broadcasting businesses by carrier to interfrence ratio in layered region structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003092320A1 (en) * | 2002-04-24 | 2003-11-06 | Ericsson Inc. | Wireless communications apparatus, methods and computer program products using broadcast control channel messaging |
| CN1531368A (en) * | 2003-02-25 | 2004-09-22 | ���ǵ�����ʽ���� | Method for providing more broadcasting businesses by carrier to interfrence ratio in layered region structure |
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| CN101112015A (en) | 2008-01-23 |
| ZA200706308B (en) | 2009-09-30 |
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