CN101155017A - Indicating special transmissions in wireless communication systems - Google Patents
Indicating special transmissions in wireless communication systems Download PDFInfo
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- CN101155017A CN101155017A CNA2007101371668A CN200710137166A CN101155017A CN 101155017 A CN101155017 A CN 101155017A CN A2007101371668 A CNA2007101371668 A CN A2007101371668A CN 200710137166 A CN200710137166 A CN 200710137166A CN 101155017 A CN101155017 A CN 101155017A
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Abstract
A wireless communication infrastructure entity assigns a plurality of schedulable wireless communication entities to a group wherein each entity is assigned a location within the group. The infrastructure entity indicates which of the plurality of schedulable wireless communication entities assigned to the group have been assigned a wireless resource, for example using a terminal assignments field ( 910 ) and indicates special transmission information using a special transmissions field ( 905 ). The special transmissions field ( 905 ) is used to indicate which of the schedulable wireless communication entities are receiving a special transmission.
Description
MULTIPLE-BLADE
The priority of the provisional application that the application requires that sequence number is 60/820673, name is called " INDICATING SPECIALTRANSMISSIONS IN WIRELESS COMMUNICATION SYSTEMS ", submitted on July 28th, 2006, its by common all and all by with reference to being included in here.
Technical field
The disclosure is usually directed to radio communication, relates more particularly to indicate the special transmission to one group of wireless communication terminal sharing one group of time-frequency resources.
Background technology
Only relate in the wireless communication system of data (DO) at some, (VoIP) provides voice by internet voice protocol.Known use mixes automatic repeat requests (HARQ) error correction scheme and littler grouping dimension improves the system that this is used for the VoIP business.Though the voip user has the senior link adaptation identical with the data user and the benefit of statistic multiplexing, because the dramatic growth of voice user's quantity may appear in littler voice packet sizes places.Unfortunately, a large amount of voice user's numbers have brought burden for the controlling organization of system.Be easy to and can infer, for example, the packets of voice that provides in the given time period can be 30 times of packet.Typically, according to vocoder rate, in single grouping, there are about 1500 bytes to be used for data and about 15 to 50 bytes are used for voice.(noticing that usually in the prior art, when using term " data ", its expression is used for any business no matter be the pay(useful) load information of voice or data) unless " data " intention expression pay(useful) load information relevant with non-voice service pointed out in context.
Sharing one group of time-frequency resources all is known for the Packet Multiplexing voice user.Further, the known use bitmap signaling part of will share effectively time-frequency resources is distributed to voice user's group of sharing this identical time-frequency resources.Yet these technology are not used the efficient apparatus of indication special transmission.For example, this technology does not allow to transmit two groupings to same user, and one has minimum signaling consumption.As another example, this technology does not allow to distribute special resource to special access terminal (AT).Therefore, when still keeping basic bitmap signaling structure, need effectively reach and indicate various types of special transmission neatly.
Description of drawings
Fig. 1 is illustrative cordless communication network.
Fig. 2 is illustrative radio frames sequence, its each comprise a plurality of time slots.
Fig. 3 is the illustrative example of repetition radio frames sequence, its each comprise a plurality of time slots.
Fig. 4 is the illustrative example of one group of shared resource.
Fig. 5 is the structure chart of resource allocation information.
Fig. 6 shows the resource allocation bitmap.
Fig. 7 shows shared resource and typical ordering pattern.
Fig. 8 shows first kind of exemplary resource allocation policy.
Fig. 9 is the structure chart of the resource allocation information of a plurality of embodiment according to the present invention.
Fig. 1 O illustration second kind of exemplary resource allocation policy.
Figure 11 is the calcspar of the base station of a plurality of embodiment according to the present invention.
Figure 12 is a flow chart, and it has represented the operation of the base station of Figure 11 of a plurality of embodiment according to the present invention.
Figure 13 is the calcspar of the wireless terminal of a plurality of embodiment according to the present invention.
Figure 14 is a flow chart, and it has represented the operation of the wireless terminal of Figure 13 of a plurality of embodiment according to the present invention.
By thinking over following detailed description with reference to the accompanying drawings, various aspects of the present disclosure, feature and advantage will become apparent more fully for those of ordinary skills, for clear accompanying drawing is simplified, and also be there is no need according to scale.
Specific embodiment
Fig. 1 has described radio digital communication system 100, and it comprises transceiver base station 110, and this transceiver base station 110 offers wireless terminal 102 on corresponding area or the cellular zone with radio communication service, and this radio communication service comprises voice and/or data.This transceiver base station (BTS) also is called as other name, for example base station, " Node B "; And Access Network (AN), it depends on system type, and is communicatively coupled to controller 120 and other entity, this other entity is not shown but be known for those of ordinary skills.As shown in Figure 1, each transceiver base station comprises scheduling entity 112, is used for carrying out between intrasystem wireless communication terminal wireless resource scheduling.HRPD (high rate packet data) (E-HRPD) network and other network of Universal Mobile Telecommunications System (UMTS) net during radio digital communication system 100 represented example communication system include but not limited to develop, UMTS land wireless access (E-UTRA) net of evolution, evolution based on OFDM (OFDM).
Opposite with the traditional voice transmission on the circuit commutative field, E-HRDP, E-UTRA and other communication protocol just are being developed to support the transmission of speech business in the packet domain.Therefore, for supporting scheme to have interest based on the speech business of sharing wireless channel, wherein, the time of a plurality of user's shared radio interface and frequency resource.In order to use E-HRPD and E-UTRA to obtain significant capacity increase, need effective allocation of radio resources scheme to be applicable to speech business probably.In these and other is used, comprise the data application, when providing flexibility to the scheduler on the network, expectation controls to minimum with signaling consumption usually.Usually in fact, be useful like this: limit mechanism and come effectively signal resource distribution and associated control channel information to be arrived a plurality of terminals with signaling, and rely on shared channel to use packet-based transmission to transmit any business.
Fig. 2 shows radio frames sequence 200, and it can be used for communicating at radio digital communication system.As shown in Figure 2, this frame sequence generally includes a plurality of frames 210,220,230 ..., wherein each frame comprises a plurality of time slots.For example, frame 210 comprises time slot 212, and it has the resource allocation control channel part in control channel part 214 and the data channel part 216.In certain embodiments, these frames have constituted the frame repetitive sequence, and wherein this repetitive sequence can be periodic or acyclic.
Fig. 3 shows the repeating frame sequence, thereby wherein 3 time slots are one group and constitute a frame.As shown in Figure 3, each time slot is 5/9 millisecond, and each frame is 5/3 millisecond, although this timing can be different in other embodiments.For example, in another embodiment, thereby two 5/6 millisecond time slot links up and forms 5/3 millisecond frame.In yet another embodiment, one 5/6 millisecond time slot is defined as a frame.Interlacing pattern is defined as the repetitive sequence of frame.For the system that uses synchronous HARQ (S-HARQ), the initial and transmission of HARQ afterwards typically occurs in the same interlacing pattern.In this illustrative embodiment, 12 frames of from 0 to 11 expression have occupied 20 milliseconds the time interval, and it is defined as superframe 301, and is the duration that is used for the vocoder frame of multiple wireless standard.
For OFDM (OFDMA) system, for example those are considered to be used for the system of E-UTRA and E-HRPD, and frequency domain is split into subcarrier.For example, for the OFDMA carrier wave of 5MHz, may have 464 available subcarriers, wherein subcarrier spacing is 9.6KHz.Similarly, time slot is divided into a plurality of OFDM symbols.For example, a time slot can occupy 5/9 millimeter, and comprises 5 OFDM symbols, and wherein each symbol occupies about 110.68 microseconds.These subcarriers are grouped to form frequency and select resource element (FSRE) and frequency distribution resource element (FDRE).FSRE is one group of continuous sub-carriers, and FDRE is one group of discontinuous subcarrier.
In one embodiment, the scheduler in the wireless communication system or other infrastructure entities for the purpose of dispatching, are grouped into one or more groups with wireless communication terminal.Can be called as schedulable wireless communication entities by any entity or the terminal of scheduler schedules.In one embodiment, can be based on the wireless channel situation that is associated with terminal, this entity or terminal are divided into groups, wherein, this wireless channel situation is the channel quality information, the Doppler of terminal report, the distance of distance service sub-district of terminal report for example.In another embodiment, based on the one or more terminal operation features except that adding common communication session, terminal is divided into groups.Exemplary terminal operation feature comprises the business of the power peak deposit of terminal, grand diversity factor, terminal capability, terminal, encoding and decoding speed wherein.In another embodiment, having the terminal that activates voip conversation is divided into groups together.In case scheduler has been set up one group of wireless communication terminal, then each wireless terminal of BTS its position in this group sends indication, and the indication that sends the identifier that is used for this group.If BTS need send for whole group of effective control information, then use the identifier of this group.For example, the indication of indication that BTS can be by sending this group identifier and new Frequency Distribution changes the Frequency Distribution for this group.This position indication sends for each wireless terminal discriminably, perhaps can once send for a plurality of wireless terminals.For example, BTS can send the tabulation of wireless terminal unique identifier with group identifier.For the first terminal distribution primary importance in the tabulation of this unique identifier, to second terminal distribution second place in the tabulation of this unique identifier or the like.This unique identifier can be mobile communications device or wireless terminal identifier number, user identity or other any identifier that can be used for the unique identification wireless terminal.For example, this unique identifier can be a media interviews control index (MAC Index).As another example, BTS can send the unique identifier that is used for a wireless terminal, the discriminating of group identifier, the indication of the interior wireless terminal position of this group.Can on control channel, send these indications.
For schedulable each group wireless communication entities, scheduler can specify one group will be by entity in this group or the shared time-frequency resources of terminal.Fig. 4 shows the example of one group of shared resource.As shown in Figure 4, shared resource 410 is 3 time slots and 8 FDRE.If piece is defined as a time slot in the time domain and a FDRE in the frequency domain, then there are 24 pieces (piece is also referred to as Resource Block or simply is called resource), be expressed as from 1 to 24.Recalling FDRE is the group of discontinuous subcarrier, thereby the FDRE index of Fig. 4 is the logical expressions of frequency domain.As will discussing in the back, each wireless terminal is determined the part of its shared resource based on the distribution for other wireless terminal.Therefore, the order of definition Resources allocation is necessary.In Fig. 4, provided illustrative conventional order pattern 420, it has caused piece to be numbered as from 1 to 24.This group shared resource can be repeated to use in reference to figure 3 described interlacing patterns.For example, can in each frame of interlacing pattern shown in Figure 30, repeatedly use this 24 resources.Once more, these 24 resources are logical expressions of one group of subcarrier in the interior frequency domain of a time slot; The actual physical location of these subcarriers can change with time slot.
Can use control channel, from indication and the conventional order pattern of BTS to wireless terminal signaling shared resource group.Further, can have in any time slot of predetermined relationship beginning time slot, transmit this control channel with the shared resource group.This shared resource group can begin in the same time slot of transmitting control channel, can have the fixedly starting point relevant with the time slot of transmitting control channel, perhaps can be in control channel by signaling clearly.
In case scheduler has distributed a plurality of wireless terminals to one group of wireless terminal, to each the wireless terminal assigned address (being also referred to as the location) in organizing, and distributed one group of shared resource for this group wireless terminal, then scheduler to this group wireless terminal indication which wireless terminal in the given time period activates, and in certain embodiments, the number of the Resources allocation of each wireless terminal is distributed in indication.Fig. 5 shows the example technique to the wireless terminal Resources allocation.First field, terminal specify 510, indicate which terminal to be assigned with at least one shared resource in the corresponding shared resource group.For example, field 510 may be first bitmap, and wherein the wireless terminal position in the wireless terminal group is corresponding to its bit map location.For example, wireless terminal assigned address 1 determines whether it uses the position 1 of bitmap to be assigned with a shared resource, and wireless terminal assigned address 2 determines whether it uses the position 2 of bitmap to be assigned with a shared resource, or the like.
Though bit map location typically is a bit, should be appreciated that bit map location can be more than a bit.For example, bit map location can comprise 2 bits, wherein wireless terminal assigned address 1 determines whether to use preceding two bits of bitmap to be assigned with a shared resource, and wireless terminal assigned address 2 determines whether to use third and fourth bit in the bitmap to be assigned with a shared resource, or the like.When each wireless terminal uses 1 bit in this bitmap, can use " 0 " or " 1 " to indicate excited users, wherein use opposite state to indicate non-excited users.In this illustrative example, use " 1 " indication excited users.In certain embodiments, the just oppositely conventional order pattern of individual bit position is added to this first bitmap, and wherein the value representation of this position is to increase progressively or the order of successively decreasing is followed this routine pattern in proper order.For example, " 0 " can be represented to use conventional order pattern with incremental order (non-return), and " 1 " expression is used this routine order pattern with the order (oppositely) of successively decreasing.This bit can have the optional position in first bitmap, as long as wireless terminal is known its position.In relevant embodiment, set up multiple conventional order pattern, BTS indicates desired conventional order pattern by add conventional sequence field to this first bitmap.Then, in every kind of scheduling situation, BTS uses this routine sequence field to indicate desired conventional order.
As illustrative example, Fig. 6 has represented to be used for illustrative first and second bitmaps of Resources allocation.As shown in Figure 6,24 wireless terminals have been assigned to one group of wireless terminal, and are designated as group position 1 to 24, and it is corresponding to the position in first bitmap 1 to 24.Use " 1 " expression in first bitmap to activate wireless terminal.This first bitmap is the exemplary terminal specific field 510 from Fig. 5.This second bitmap is exemplary allocation sizes field 530, and wherein N excited users in this first bitmap is corresponding to N position in second bitmap.1 resource of " 0 " expression in the allocation sizes field has been assigned to corresponding wireless terminals, and 2 resources of " 1 " expression have been assigned to corresponding wireless terminals.The wireless terminal of designated group of position 1 is by WT
1Therefore expression is the activated wireless terminal by the position 1 in " 1 " in the bit map location 1 expression first bitmap.Therefore, WT
1Use the primary importance in second bitmap 530 to determine its allocated size.Because indication " 0 " in the primary importance in second bitmap, so WT
1Be assigned with 1 resource.The wireless terminal of designated group of position 2 is by WT
2Expression, therefore shown in " 0 " in first bitmap, the position 2 in first bitmap is not the activated wireless terminal.Therefore, WT
2Be not assigned with any resource, and in second bitmap 530, can not find.The wireless terminal of designated group of position 3 is by WT
3Expression, therefore shown in " 1 " in the bit map location 3, the position 3 in first bitmap is activated wireless terminals.WT
3Be that second shown in first bitmap activates wireless terminal, therefore, WT
3Use the second place in second bitmap 530 to determine its allocated size.Because indication " 1 " in the second place in second bitmap, so WT
32 resources have been assigned with.Repeat these allocation strategies for all 24 wireless terminals.Notice that second bitmap can be identical with first bitmap size, its terminal that can not need to distribute in first bitmap is mapped to the position in second bitmap.
Make up allocation strategy shown in Figure 6 and shared resource group 410 and conventional order pattern 420 shown in Figure 4, each wireless terminal can be determined the part of its shared resource as shown in Figure 7.First activates wireless terminal WT
1Be assigned with a resource, because it is first wireless terminal that is assigned with, thereby it has been assigned with the resource 1 of Fig. 4.Second activates wireless terminal WT
3Two resources have been assigned with.WT
3The number of resources of wireless terminal and the less position addition in second bitmap will be distributed to.In this case, WT
3Determine that a resource is assigned with.Therefore, WT
3Be assigned with the resource 2 and 3 of Fig. 4.The 3rd activates wireless terminal WT
5Two resources have been assigned with.WT
5The number of resources of wireless terminal and the less position addition in second bitmap will be distributed to.In this case, WT
5Determine that 3 resources are assigned with and (distribute to WT for one
1, distribute to WT for two
3).Therefore, WT
5Be assigned with the resource 4 and 5 of Fig. 4.Repeat this processing for all wireless terminals.
For specific application examples such as voice, grouping arrives with constant relatively speed.For example, for voice, approximately per 20 milliseconds of arrival of vocoder frame.As illustrative example and refer again to Fig. 3, think that vocoder frame begins place's beginning, approximately per 20 milliseconds of arrival at long frame number 0.Typically, BTS adds the head of any necessity to vocoder frame, and it is encoded to form speech frame.BTS modulates and sends to wireless terminal at least a portion of the symbol that comprises packets of voice then in long frame number 0.This is represented as HARQ transmission.Wireless terminal receives then and attempts the grouping that is sent is decoded.This packets of voice if wireless terminal has successfully been decoded after HARQ transmission, then it sends to BTS and confirms (ACK).After receiving ACK, BTS does not send any additional information (the bitmap signaling allows these resources to be used by other wireless terminal) to wireless terminal in frame 3,6 and 9.If wireless terminal does not have this packets of voice of can successfully decoding, then it sends Negative Acknowledgement (NACK) to BTS.After receiving NACK, BTS sends the diacritic of the packets of voice that is expressed as the 2nd HARQ transmission to wireless terminal in frame number 3.The packets of voice if wireless terminal has successfully been decoded after the 2nd HARQ transmission, then it sends to BTS and confirms (ACK).After receiving ACK, BTS does not send any additional information to wireless terminal in frame 6 and 9.If wireless terminal does not have this packets of voice of can successfully decoding, then it sends Negative Acknowledgement (NACK) to BTS.After receiving NACK, BTS sends the diacritic of the packets of voice that is expressed as the 3rd HARQ transmission to wireless terminal in frame number 6.The packets of voice if wireless terminal has successfully been decoded after the 3rd HARQ transmission, then it sends to BTS and confirms (ACK).After receiving ACK, BTS does not send any additional information to wireless terminal in frame 9.If wireless terminal does not have this packets of voice of can successfully decoding, then it sends Negative Acknowledgement (NACK) to BTS.After receiving NACK, BTS sends the diacritic of the packets of voice that is expressed as the 4th HARQ transmission to wireless terminal in frame number 9.The packets of voice if wireless terminal has successfully been decoded after the 4th HARQ transmission, then it sends to BTS and confirms (ACK).If wireless terminal does not have this packets of voice of can successfully decoding, then it sends Negative Acknowledgement (NACK) to BTS.
If BTS has received NACK after the 4th HARQ transmission, then current bitmap signaling mechanism does not allow BTS side by side to continue to transmit current speech grouping (promptly sending the 5th HARQ transmission), and begins to send new packets of voice in frame number 12.More particularly, BTS selects whether to continue to send current packets of voice or begin to send new packets of voice.If BTS selects to continue to send current packets of voice, then new packets of voice will be delayed, and this has reduced voice quality.If BTS selects to send new packets of voice, then current packets of voice will be reported an error, and this also can reduce voice quality.Therefore, need the while also effectively to the packets of voice of wireless terminal transmission more than one, the bitmap Signalling method of still remaining valid simultaneously, this has minimized the control channel expense.
As an example of described problem, consider the situation described in Fig. 8.With reference to figure 8, show frame 9 and 12 from Fig. 3.Four wireless terminal (WT
6, WT
7, WT
10And WT
11) group 830 be designated as the group of assign group position 1 to 4, and distribute frequency domain resource in interweave (the interweaving 0) of frame 9 and 12 comprising.Especially, share the group of time-frequency resources and be made up of two FDRE, this FDRE is in each of 3 time slots of 6 pieces altogether that are used for each frame 810 and 820.Further, think that BTS uses two bitmaps to dispatch wireless terminal, wherein 850 indications of first bitmap activate wireless terminal, the allocated size of previously described each the activation wireless terminal of second bitmap, 860 indications.Consider such situation: " 0 " indication in second bitmap has distributed a piece, and " 1 " indication in second bitmap has distributed two pieces.Consider WT
6, WT
7, WT
10Receiving the 4th transmission of their each packets of voice, and WT
11Confirmed the transmission of its first packets of voice.At last, the consideration scheduler has been determined WT
6, WT
7, WT
10In frame 9, need two resources.Come Resources allocation according to routine order pattern 870.
With reference to figure 8, scheduler is as distributing WT in first frame that bitmap is shown in 9
6, WT
7And WT
10, and shown in second bitmap allocation block size.Because the value in conventional order pattern 870 and the bitmap, as 810 seen, 3 wireless terminals have been assigned with resource.Consider such situation: WT
6And WT
7After frame 9, send ACK to BTS, and WT
10After frame 9, send NACK to BTS.Further consider WT
6, WT
10And WT
11Have second packets of voice, its need frame 12 begin be sent out.Because WT
10Be not correctly decoded its first packets of voice, thus BTS to select be to continue to send its first packets of voice, still begin to send its second packets of voice.In this illustrative example, BTS selects to WT
10Send second packets of voice.Because WT
6And WT
11Confirmed their each first packets of voice, thereby BTS will be in the beginning of frame 12 to WT
6And WT
11Send each second packets of voice.The consideration scheduler has been determined WT
6And WT
10In frame 12, need a resource, simultaneously WT
11Need two resources.With reference to figure 8, shown in first bitmap, scheduler has distributed WT in frame 12
6, WT
10And WT
11, and shown in second bitmap allocation block size.Because the value in conventional order pattern 870 and the bitmap arrives seen in 820,3 wireless terminals have been assigned with resource.Use this Signalling method, BTS can not side by side be WT
10Send the 5th transmission of VoIP grouping and first transmission of the 2nd VoIP grouping.
In order to alleviate described problem, the new control channel bitmap of expression special transmission is sent to the wireless terminal group of shared one group of time-frequency resources, thereby receiving this special transmission to which wireless terminal of this group indication.This field has been shown among Fig. 9, and wherein special transmissions field 905 is inserted in the shared control channel message in the terminal appointment 910 of definition before and the front of allocated size 930 fields.Notice that special transmissions field can occur in any position in the control channel.For example, in another embodiment, special transmissions field occurs in after terminal distribution 910 and allocated size 930 fields.This special transmissions field helps to carry out the transmission of two packets of voice to a wireless terminal simultaneously, and will other in greater detail in the back special transmission.This special transmissions field comprises identifier (WT identifier field 940) and N optional associate field of wireless terminal, and wherein N is the integer more than or equal to 0.With reference to figure 9, two Optional Fields have been indicated, i.e. first field and second field.In order to alleviate the problem described in Fig. 8, first field 950 can be a reserved block field 950, and second field 960 can be a HARQ transmission number field 960.3 each wireless terminals that field is used to have special transmission have been indicated.Each serial field 940,950 and special transmission that is used for a wireless terminal of 960 indications.Can fix the number that allows special transmission in system, it is indicated on different control channels, uses blind Detecting to determine, determines based on group size etc.In relevant embodiment, special transmissions field 905 is not added to terminal specific field 910 and allocation sizes field 930, but is encoded separately and is transmitted.
Which wireless terminal is WT identifier field 940 indicated receiving special transmission.Typically, the WT identifier is the binary representation of wireless terminal position in the group.The position of recalling wireless terminal in the group is corresponding to its bit map location.This WT identifier also can be sector unique identifier (for example MAC index) or the specific unique identifier of system.
The reserved block field is organized the piece number that indication is used for each special transmission to the user who shares one group of time-frequency resources.Typically, the reserved block field is a bitmap, and wherein this bitmap is that binary system arrives metric direct mapping.For example, if 3 bits are allocated for this reserved block field, then 0 piece of " 000 " expression is reserved, and 1 piece of " 001 " expression is reserved, and 2 pieces of " 010 " expression are reserved, and 3 pieces of " 011 " expression are reserved, or the like.But other mapping also is possible.For example, can use the simple non-linear expression of 3 bits, for example 0 piece of " 000 " expression is reserved, 1 piece of " 001 " expression is reserved, and 2 pieces of " 010 " expression are reserved, and 4 pieces of " 011 " expression are reserved, 8 pieces of " 100 " expression are comprised, 12 pieces of " 101 " expression are reserved, and 16 pieces of " 110 " expression are reserved, and 32 pieces of " 111 " expression are reserved.The reserved block field all is possible to any linearity or the nonlinear mapping of actual reserved block number, as long as scheduler and wireless terminal on the BTS are known this mapping.Prediction can be reserved than using and finish more resources, and even now efficient is lower, but needs sometimes.For example, it has reduced the expense in the reserved field, and this reserved field is used to specify reserved resource piece number when using Nonlinear Mapping.This mapping can be transmitted on control channel, perhaps can be stored as default value on wireless terminal.
The HARQ transmission number that indicated wireless terminal is receiving in the HARQ transmission number field indication WT identifier field 940.This information can be used when decoding VoIP transmits by wireless terminal, and when wireless terminal has been lost one or more control channel during given transmission packets is being special needs.For example, if BTS is using a piece to send the 5th transmission to the wireless terminal with the 12nd packet positions, then WT identifier field 940 should be " 1100 ", and reserved block field 950 should be " 001 ", and HARQ transmission number field 960 should be " 101 ".
There are a plurality of added field that can be used as first field 950 or second field 960.At first, the vocoder rate field can be used for indicating the vocoder rate of special transmission.This helps to alleviate processing burden on the wireless terminal by eliminate carrying out demand that blind rate detects.For example, the vocoder rate field can be the field of two bits, and wherein " 00 " represents 1/8th rate vocoder frames, " 01 " expression 1/4th rate vocoder frames, " 10 " expression 1/2nd rate vocoder frames, " 11 " expression full rate vocoder frame.Secondly, packet data field can be used for existence and the grouping size to particular wireless station indication packet data transmission.This helps being indicated to one group of packet data transmission that typically receives user's group of VoIP grouping.For example, this packet data field can be the field of 2 bits, the wherein packet of " 00 " expression 128 bits, the packet of " 01 " expression 256 bits, the packet of " 10 " expression 512 bits, the packet of " 11 " expression 1024 bits.As an example, this packet can be SMS (short message service) message.The 3rd, the allocation block field can be used for indicating the begin block that is used for each special transmission.For example, for some special circumstances of for example soft handover, need specific wireless terminal is distributed to specific shared time-frequency resources.In this case, the allocation block field is used to indicate first piece of special transmission.Remaining wireless terminal is skipped any resource indicated in this allocation block field simply in the branch timing of determining them.For example, imagination BTS wants to distribute to the wireless terminal with the 6th packet positions the situation of the 8th shared resource.BTS indication " 110 " in the WT identifier field then, indication " 1000 " in the allocation block field.
As previously mentioned, the allocation block field can be used for soft handover.In order to understand this point, the imagination wireless terminal is between two sectors being represented by sector A and sector B.Further the imagination wireless terminal has been assigned to the VoIP grouping among the A of sector, this sector A shares one group of specific time-frequency resources, and in the B of sector, exist similarly grouping, this sector B to share identical time-frequency resources group (this wireless terminal is not the member of the group in the B of sector).Imagine this wireless terminal and indicate its expectation then, to play its VoIP grouping simultaneously from sector A and sector B for BTS.In order to play simultaneously, in sector A and sector B, use identical time-frequency resources.Accomplish this point, sector A has been assigned with the time-frequency resources which group is shared to sector B indication wireless terminal, sector B is by the MAC index of indication wireless terminal in the WT identifier field, and use the interior allocation block of allocation block field indication sector A, indicate the special transmission that is used for wireless terminal.In the shared control channel of sector B, send these fields.
In the most common form, the identifier of special transmissions field indication wireless terminal, and alternatively, indicate at least one added field, wherein this added field is transmitted number field, vocoder rate field, packet data field, is reached the acquisition of allocation block field from reserved block field, HARQ.
Once more, in order to alleviate the described problem of Fig. 8, imagination reserved block field is used as first field and HARQ transmits the situation that number is used as second field.If observe its identifier among wireless terminal in WT identifier field 940, its must cicada its receiving special transmission.It according to corresponding reserved block field with from the HARQ transmission number of corresponding HARQ transmission number field, is identified for the piece number of this special transmission then.Can divide the piece that is used in special transmission according to the special transmission allocation strategy.For example, can the shared resource group begin locate, at place, the end of shared resource group (may with inverted order), immediately following the piece that uses first and second bitmaps to distribute or in any other position that BTS and wireless terminal are known, distribute special transmission.This special transmission allocation strategy can be beginning Resource Block and particular order.BTS can indicate this special transmission allocation strategy on control channel.If the shared resource group begin to locate allocation block, first wireless terminal that is then just receiving special transmission is dispensed on indicated piece numbers in the first reserved block field 950 that piece 1 place begins.Second wireless terminal that is just receiving special transmission is dispensed on that indicated piece number adds indicated piece number in the first reserved block field in the second reserved block field that piece 1 place begins.Repeat this process for all wireless terminals that just receive special transmission.Then, indicated wireless terminal begins with typical mode Resources allocation in terminal specific field 910, and this typical mode is with the BOB(beginning of block) followed by a last piece that is used for special transmission.Attention can be indicated wireless terminal in special transmissions field 905 and in the terminal specific field 910.In this way, wireless terminal can be divided the resource that is used in more than a grouping simultaneously.Notice that BTS can be two special transmission of particular wireless station indication by the identical WT identifier of indication in a plurality of WT identifier fields 940.
It is how to be used for side by side being used in more than the resource of a grouping to same wireless terminal branch that Figure 10 shows special transmissions field.Except pointing out in addition, the situation of Figure 10 is identical with Fig. 8.Recall, in the beginning of frame 12, BTS has the WT of being used in its formation
6, WT
10And WT
11Second packets of voice, and be used for WT
10First packets of voice unconfirmed.Use this special transmissions field, this case description BTS how simultaneously to WT
10Divide the resource that is used in first and second packets of voice.BTS sends the part of special transmissions field as control channel, and it comprises WT identifier field 1090, reserved block field 1080, reaches HARQ transmission number field 1085.In this example, special transmission is assigned with first piece in the shared resource group, and particular order equals conventional order.Further, the reserved block field is a bitmap, and this bitmap is that binary system arrives metric direct mapping.Imagination BTS has determined to be used for WT
10The 5th of first packets of voice transmission need two pieces.In order to indicate this to be used for WT
10Special transmission, BTS in 1090, indicate the grouping in WT
10Location or position.WT
10Corresponding to the 3rd position in this bitmap.In this example, because first position is corresponding to binary system " 00 ", thereby the 3rd position is corresponding to binary system " 10 ".In other embodiments, the 3rd position can be coming corresponding to binary system " 11 " of how defining according to 0 position.BTS uses " 10 " in the reserved block field 1080, indicates two pieces to be allocated for special transmission.At last, BTS uses " 101 " the 5th HARQ transmission of indication in HARQ transmission number field.WT
10The decoding control channel, and determine that it has been assigned with the special transmission that occupies two pieces.Owing at first distribute special transmission, thereby these two pieces are two pieces sharing beginning in the time-frequency resources group according to particular order.Each is just receiving the terminal of control channel message and is determining that these two pieces are used for special transmission, begin according to first and second bitmaps then with typical mode Resources allocation.Since the value in conventional order pattern 1070 and the bitmap, WT
6, WT
10And WT
11Seen in 1020, be assigned with resource.For example, WT
6Use first bitmap 1050 to determine that it activates, and use second bitmap 1060 to determine that it has been assigned with a piece, because two pieces have been allocated for special transmission, thereby it determines that it has been assigned with piece number 3.WT
10Use first bitmap 1050 to determine that it activates, and use second bitmap 1060 to determine that it has been assigned with a piece, because two pieces have been allocated for special transmission and piece and have been distributed to other wireless terminal in first and second bitmaps earlier, thereby it determines to be assigned with piece number 4.For WT
11Repeat this process.Use special transmissions field 1080,1085 and 1090, BTS can indicate WT
10Receive two packets of voice just at the same time.In certain embodiments, omitted HARQ transmission number field.In this case, WT
10Knowing which distribution is to be used for the 5th of first packets of voice to transmit, and which distribution is to be used for first transmission of second packets of voice.In a preferred embodiment, the transmission that exceeds conventional boundary line continuously is called as special transmission, and uses the first and second conventional bitmaps to indicate new transmission, but as long as BTS and wireless terminal are had identical ideas to this strategy, opposite also is possible.
In another embodiment, reserved block and WT identifier field are used to indicate the particular wireless station that is receiving special transmission, and it needs not to be continuous transmission.For example, adding RTP/UDP/IP (RTP/user datagram protocol/the Internet protocol) expense of vocoder packets to before coding can be than big many of regular situation.In this case, the WT that the WT identifier will indicate the special transmission expectation to be used for, the reserved block field is used to indication to expand the grouping size of RTP/UDP/IP grouping and divide the piece number that is used in this grouping.
In yet another embodiment, use bitmap to indicate the identifier of the wireless terminal that has been assigned with special transmission, wherein each position in this bitmap is corresponding to one that shares in the time-frequency resources.When indication " 1 " in this bitmap, the wireless terminal that formerly has been assigned with corresponding time-frequency resources in the frame is assigned with special transmission in present frame.This is being particularly advantageous when not having allocation sizes field (only terminal appointment) and have a plurality of wireless terminal that needs special transmission.In this embodiment, each wireless terminal that has been assigned with special transmission has been assigned with a piece.
Figure 11 is the calcspar of base station.As directed, base station 110 comprises logical circuit 1201, Traffic Channel circuit 1203, reaches control channel circuit 1205.During operation, data are input to Traffic Channel circuit 1203, and are used to the suitable shared resource (that is, time slot and subcarrier may be in specific interweaving) from the shared resource group, are sent to suitable wireless terminal 102.
As mentioned above, control channel circuit 1205 sends suitable control information to set of terminal 102.This control information comprises that terminal specifies 910, its with each terminal be assigned with resource notification they.Allocated size 930 also is sent out by control channel circuit 1205.As mentioned above, allocation sizes field comprises the shared resource amount that particular terminal is assigned with.
When logical circuit 1201 determines that particular wireless station needs special transmission, logical circuit 1201 will indicate control channel circuit 1205 to come the wireless terminal broadcasting WT identifier field 940 that is just receiving special transmission for each, and this WT identifier field 940 is as the part of the special transmissions field of shared control channel.If used the reserved block field, then logical circuit 1201 will be determined the resource needed amount for each wireless terminal that needs special transmission, indicate control channel circuit 1205 broadcasting reserved block fields 940 then, this reserved block field 940 is as the part of the special transmissions field of shared control channel.This reserved block field 940 will be indicated to the user of shared resource piece group definitely has be received the terminal utilization of special transmission for how many resources.If using any one in HARQ transmission number field, vocoder rate field, packet data field and the allocation block field, then logical circuit 1201 will be determined suitable value for this field, indicate then control channel circuit 1205 with this field as the part of the special transmissions field of shared control channel and broadcast.The wireless terminal that is just receiving special transmission will be determined the position of their special transmission based on being used for starting point that special transmission distributes, particular order pattern, and any previous special transmission.Remaining wireless terminal will determine which piece is being used to special transmission, and will continue to skip the piece that those are used for special transmission simultaneously according to this group shared resource piece of routine order pattern " filling ".
Figure 12 is the flow chart of the base station operation of expression Figure 11.This logic flow is in step 1301 beginning, and here, logical circuit 1201 (as scheduler work) is determined a plurality of wireless terminals that will use the shared resource group to be grouped.As mentioned above, all terminals in this grouping will have the predetermined conventional order pattern (fill order) that is used for resource, and the predetermined policy that is used to the special transmission Resources allocation.This special transmission allocation strategy will be sent to all wireless terminals as the part of control channel message.Especially, the base station can send packet identifier and special transmission allocation strategy on control channel.If allow the allocated size more than, then logical circuit 1201 is determined allocated size (step 1303) for each terminal in this group then.If do not need any wireless receiver in organizing is sent special transmission in step 1305, then logic flow proceeds to step 1307, otherwise, logic flow proceeds to step 1309, for needing the wireless terminal of special transmission, each is identified for expecting the identifier (WT identifier) of wireless terminal here.Alternatively, added field is associated with each wireless terminal.For example, reserved block field, HARQ transmission number field, vocoder rate field, packet data field, and any combination of allocation block field can be added to each WT identifier.The serial connection of field that is used for just receiving each wireless terminal of special transmission is defined as special transmissions field.Notice that if BTS is resource-constrained, then it can select not distribute any resource for special transmission.
In step 1307, control channel circuit 1205 sends terminal appointment, allocated size, if desired, also sends special transmissions field.At last, in step 1311, Traffic Channel circuit 1203 sends data to the terminal of the appropriate resources of utilizing them.
Figure 13 is the calcspar of terminal.As directed, terminal 102 comprises logical circuit 1401, Traffic Channel circuit 1403 and control channel circuit 1405.During operation, receive data by control channel circuit 1405 (passing through control channel) or Traffic Channel circuit 1403 (being used to suitable shared resource (that is time slot and subcarrier in specific interweaving)) from the shared resource group.
Figure 14 is the flow chart of expression terminal 102 operations.This logic flow is in step 1501 beginning, here, and the 1405 receiving terminal appointments of control channel circuit, allocated size, and optional special transmissions field.In step 1503, wireless terminal determines whether to have indicated its identifier in any one of special transmissions field.If wireless terminal does not find its identifier, then logic flow proceeds to step 1507, otherwise, logic flow proceeds to step 1503, here, wireless terminal is determined its special transmission information, and this special transmission information can comprise any combination of reserved block field, HARQ transmission number field, vocoder rate field, packet data field and allocation block field.Based on this terminal specific field, allocation sizes field and special transmissions field, wireless terminal logical circuit 1401 is the reception of data 1507 and sends definite adequate resources.Should determine that wherein the special transmission allocation strategy comprised begin block and the particular order that is used for special transmission based on routine order pattern and special transmission allocation strategy.Logical circuit 1401 will determine be assigned with (step 1509) before which resource, utilize this information and allocated size, and logical circuit 1401 will be determined the appropriate resources (step 1511) that will use based on routine order pattern.
Though the inventor has and the mode that makes those of ordinary skills to make and to use has been described the disclosure and best model thereof by setting up, but be to be understood that and understand, there are a lot of equivalents with exemplary embodiment disclosed herein, and the modifications and changes that can it does not exceeded the scope of the invention and spirit, this will be by appended claim but not this exemplary embodiment limit.
Claims (22)
1. method in wireless communication infrastructure entity, this method comprises:
A plurality of schedulable wireless communication entities are appointed as one group, wherein should organize an interior position, wherein should organize designated shared Radio Resource, and wherein control this group by shared control channel to each schedulable wireless communication entities is designated;
Which designated Radio Resource indicating terminal specific field on described shared control channel, this terminal specific field are assigned in a plurality of schedulable wireless communication entities of this group;
At least one special transmissions field of indication on described shared control channel, this special transmissions field has been stipulated the identifier of the wireless terminal that special transmission is supposed to be used for.
2. the method for claim 1, wherein said at least one special transmissions field are encoded and are sent dividually with described terminal specific field.
3. the method for claim 1, wherein said at least one special transmissions field is connected to described terminal specific field, and the field that is connected is encoded and is sent out together.
4. the method for claim 1, wherein said special transmissions field also comprises the reserved block field, this reserved block fields specify be allocated for the number of the time-frequency resources of special transmission.
5. the method for claim 1, wherein said special transmissions field also comprises mixed automatic repeat request transmission number code field, this mixed automatic repeat request transmission number code field has been stipulated the transmission number in a series of mixed automatic repeat request transmission numbers, and wherein said wireless communication infrastructure entity just is being this transmission number Resources allocation.
6. the method for claim 1, wherein said special transmissions field also comprises the vocoder rate field, this vocoder rate fields specify the vocoder rate of packets of voice, wherein said wireless communication infrastructure entity just is being this packets of voice Resources allocation.
7. the method for claim 1, wherein said special transmissions field also comprises packet data field, this packet data field has stipulated to be used for the existence and the grouping size of the packet data transmission of described wireless terminal, and wherein special transmission is supposed to be used for described wireless terminal.
8. the method for claim 1, wherein said special transmissions field also comprises the allocation block field, this allocation block fields specify be used for the beginning Resource Block of described wireless terminal, wherein special transmission is supposed to be used for described wireless terminal.
9. the method for claim 1, further comprise indication special transmission allocation strategy, beginning Resource Block in the shared Radio Resource that is used for special transmission that this special transmission allocation strategy has been stipulated to be distributed, and the particular order pattern that is used for special transmission.
10. the method for claim 1, the identifier of wherein said wireless terminal are the positions of described wireless terminal in this group.
11. the method for claim 1, the identifier of wherein said wireless terminal are for the unique sector unique identifier of described wireless terminal.
12. method in schedulable wireless communication entities, this schedulable wireless communication entities and a plurality of other schedulable wireless communication entities are designated as one group, wherein each schedulable wireless communication entities is designated should organize interior position, wherein should organize designated shared Radio Resource, and wherein utilize shared control channel that this group is controlled, this method comprises:
Receiving terminal specific field on shared control channel, this terminal specific field be assigned to which of a plurality of schedulable wireless communication entities of this group designated Radio Resource;
On shared control channel, receive at least one special transmissions field, the identifier of the wireless terminal that this special transmissions field regulation special transmission is supposed to be used for.
13. method as claimed in claim 12, further comprise and receive the special transmission allocation strategy, this special transmission allocation strategy has been stipulated the beginning Resource Block in the specified shared Radio Resource that is used for special transmission, and the particular order pattern that is used for special transmission.
14. method as claimed in claim 12 further comprises:
Whether the identifier of determining described wireless terminal is corresponding to one in the identifier of indicating at least one special transmissions field;
Based on the wireless terminal that in any previous special transmissions field, distributes, determine to share the appropriate resources that is used to receive data in the Radio Resource.
15. method as claimed in claim 12 further comprises: based on as the part of special transmissions field and received reserved block field, determine to be allocated for the number of the time-frequency resources of special transmission.
16. method as claimed in claim 12, further comprise: based on as the part of special transmissions field and received mixed automatic repeat request transmission number code field, determine the transmission number in a series of mixed automatic repeat request transmission numbers, wherein said wireless communication infrastructure entity is being this transmission number Resources allocation.
17. method as claimed in claim 12, further comprise: based on as the part of special transmissions field and received vocoder rate field, determine the vocoder rate of packets of voice, wherein said wireless communication infrastructure entity is being this packets of voice Resources allocation.
18. method as claimed in claim 12, further comprise: based on as the part of special transmissions field and received packet data field, be identified for the existence and the grouping size of the packet data transmission of described wireless terminal, wherein special transmission is supposed to be used for described wireless terminal.
19. method as claimed in claim 12 further comprises: based on as the part of special transmissions field and received allocation block field, be identified for the beginning Resource Block of described wireless terminal, wherein special transmission is supposed to be used for described wireless terminal.
20. method as claimed in claim 12 further comprises:
Determine whether described wireless terminal is indicated as activation in the terminal specific field;
Determine which resource is allocated for special transmission;
Determine which resource to be used as the part of terminal specific field and be allocated for the wireless terminal that has less position in this group;
Determine the appropriate resources that is used to receive data as first available resources in the shared resource group, it is not allocated for special transmission, is not allocated for the wireless terminal that has less position in this group yet.
21. a device comprises:
Be used for a plurality of schedulable wireless communication entities are appointed as one group device, wherein each schedulable wireless communication entities is designated should organize interior position, wherein should organize designated shared Radio Resource, and wherein control this group by shared control channel;
Which designated Radio Resource the device that is used for indicating terminal specific field on shared control channel, this terminal specific field are assigned in a plurality of schedulable wireless communication entities of this group;
Be used for the device of at least one special transmissions field of indication on shared control channel, this special transmissions field has been stipulated the identifier of the wireless terminal that special transmission is supposed to be used for.
22. a device comprises:
The device that is used for receiving terminal specific field on shared control channel, this terminal specific field indicated which of a plurality of schedulable wireless communication entities of being assigned to one group designated Radio Resource, wherein this schedulable wireless communication entities and a plurality of other schedulable wireless communication entities are assigned to this group, wherein each schedulable wireless communication entities is designated should organize interior position, wherein should the designated shared Radio Resource of group, and wherein utilize shared control channel that this group is controlled;
Be used for receiving on shared control channel the device of at least one special transmissions field, this special transmissions field has been stipulated the identifier of the wireless terminal that special transmission is supposed to be used for.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US82067306P | 2006-07-28 | 2006-07-28 | |
| US60/820,673 | 2006-07-28 | ||
| US11/668,004 | 2007-01-29 |
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| CN101155017A true CN101155017A (en) | 2008-04-02 |
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| CNA2007101371668A Pending CN101155017A (en) | 2006-07-28 | 2007-07-30 | Indicating special transmissions in wireless communication systems |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018201405A1 (en) * | 2017-05-04 | 2018-11-08 | Oppo广东移动通信有限公司 | Data transmitting and receiving method and related product |
| CN109041249A (en) * | 2012-11-27 | 2018-12-18 | 华为技术有限公司 | Data transmission method, device, the network equipment and UE |
| CN111711592A (en) * | 2014-08-25 | 2020-09-25 | 韦勒斯标准与技术协会公司 | Wireless communication method and wireless communication terminal using the same |
-
2007
- 2007-07-30 CN CNA2007101371668A patent/CN101155017A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109041249A (en) * | 2012-11-27 | 2018-12-18 | 华为技术有限公司 | Data transmission method, device, the network equipment and UE |
| CN111711592A (en) * | 2014-08-25 | 2020-09-25 | 韦勒斯标准与技术协会公司 | Wireless communication method and wireless communication terminal using the same |
| CN111711592B (en) * | 2014-08-25 | 2023-06-20 | 韦勒斯标准与技术协会公司 | Wireless communication method and wireless communication terminal using the same |
| WO2018201405A1 (en) * | 2017-05-04 | 2018-11-08 | Oppo广东移动通信有限公司 | Data transmitting and receiving method and related product |
| EP3611978A4 (en) * | 2017-05-04 | 2020-04-15 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Data transmitting and receiving method and related product |
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