CN1268142C - Method of packet data transmission for executing space selection - Google Patents
Method of packet data transmission for executing space selection Download PDFInfo
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- CN1268142C CN1268142C CN02154714.9A CN02154714A CN1268142C CN 1268142 C CN1268142 C CN 1268142C CN 02154714 A CN02154714 A CN 02154714A CN 1268142 C CN1268142 C CN 1268142C
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000011664 signaling Effects 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 3
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- 238000012545 processing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000009432 framing Methods 0.000 description 1
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- 238000013468 resource allocation Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
本发明涉及用于在遵照通用移动电信系统标准UMTS的、尤其是在遵照UMTS 1.28Mcps TDD模式TD-SCDMA的移动无线系统中执行空间选择的分组数据传输的一种方法、一种装置、一种发射和/或接收单元和一种通信系统。为了实现上述方法、装置、发射和/或接收单元和通信系统，并有效地实行空间选择的分组数据传输，建议把上行链路导频信道(UpPCH)用作物理下行链路共享信道(PDSCH)的返回信道，作为所接收的物理下行链路共享信道的应答而传输一个上行链路同步码(SYNC-UL码)，以及通过PDSCH特有的中间序列以信令发送所述需传输的上行链路同步码。
The invention relates to a method, an arrangement, a method for performing spatially selective packet data transmission in a mobile radio system according to the Universal Mobile Telecommunications System standard UMTS, especially in a mobile radio system according to the UMTS 1.28Mcps TDD mode TD-SCDMA A transmitting and/or receiving unit and a communication system. In order to implement the above method, device, transmitting and/or receiving unit and communication system, and effectively implement spatially selective packet data transmission, it is proposed to use the Uplink Pilot Channel (UpPCH) as the Physical Downlink Shared Channel (PDSCH) The return channel of the physical downlink shared channel transmits an uplink synchronization code (SYNC-UL code) as a response to the received physical downlink shared channel, and sends the uplink to be transmitted by signaling through the PDSCH-specific mid-sequence synchronization code.
Description
Technical field
The present invention relates in abideing by the mobile radio system of Universal Mobile Telecommunications System standard UMTS, be used to carry out a kind of method of the packet data transmission of selecting in the space.
Background technology
Be known as the UMTS standard of Release (distribution) 4, grade 09/2001, its current version comprises three kinds of Radio Transmission Technologys: frequency domain duplex or fdd mode, 3.84Mcps time domain duplex or tdd mode and 1.28Mcps tdd mode, relate to Chinese mobile radio system TD-SCDMA referring to [1]-[5] .1.28Mcps tdd mode, this system has also made up TDMA and CDMA technology as the 3.84Mcps tdd mode.In TD-SCDMA, the transfer of data of up link and down link on a frequency by realizing by multiplexing separation of time-division.Notion " up link " is understood that data from mobile subscriber terminal-such as mobile phone etc.-be transferred to base station.Hereinafter mobile subscriber terminal is called UE, the base station is called Node B.Correspondingly, the transmission of data from Node B to UE is called as down link.Realize the separation of channel by orthogonal intersection.
In TD-SCDMA, regulation is used the antenna system of intelligence in Node B.This antenna technology is new, and is used to improve user capacity and realizes having the new business that high bandwidth needs.Antenna system shows as antenna groups on principle, wherein tandem a plurality of single antenna.Utilize antenna groups to form a plurality of directional characteristics under the situation simultaneously transmitting and receiving.Form radiation of selecting in the space and/or the reception of carrying out the space selection from different UE to different UE thus.Utilize this mode can reduce interference effect greatly, such as multichannel insert interference.
Use smart antenna can cause to reduce the transmitting power of Node B and UE.Can cut down the consumption of energy thus, this is valuable to lengthening working hours in mobile phone for example.But the advantage of smart antenna must the high expense when realizing Node B be a cost.Except the analog transmissions and receiving-member that need usually this moment, also must set up many signal processing: must from received signal, determine such as parameters such as incident directions, must form antenna diagram exactly by so-called beam-shaping, and in so-called wave beam tracing process, follow the tracks of described UE.Owing to should form described antenna diagram adaptively, tracking antenna characteristic under the situation that mobile subscriber terminal moves is followed the tracks of so will consider beam-shaping and/or wave beam subsequently continuously again.Therefore do not get rid of on one that only focuses in described two kinds of technology.
In TD-SCDMA, can both utilize dedicated channel also to utilize shared channel to come to carry out beam-shaping and/or wave beam tracking at present for packet data transmission.Node B always needs the Return Channel of corresponding UE for this reason.
For the Packet data service that especially transmission produces brokenly in DL and UL direction, in TD-SCDMA, stipulated transmission channel: downlink sharied signal channel DSCH and uplink shared channel USCH.DSCH is mapped on the physical channel " physical down link sharing channel PDSCH ", and USCH is mapped on the physical channel " physical uplink link sharing channel PUSCH ".The special character of these channels is that the UMTS wireless network can be reserved these resources in a sub-district, and these resources are distributed to certain UE in certain time, and making has a resource of only distributing to this UE in the given time.Can send to UE to the Packet data service that produces brokenly effectively thus.
Utilize the beam-shaping of shared channel and/or wave beam to follow the tracks of and realize in the following way, promptly notify described UE by the Physical Shared Channel assignment messages: distribute which PDSCH and PUSCH resource for ensuing packet data transmission and in which, carry out this distribution in the time interval by Node B.This message is sent to UE by so-called forward access channel or FACH transmission channel, and wherein, described FACH is mapped to a physical channel, also is on so-called Common Control Physical Channel S-CCPCH.At this, described S-CCPCH is transferred to the whole sub-district from Node B, because this sub-district does not know also at this time point where UE is positioned at the sub-district.In case relevant UE receives above-mentioned message, then PUSCH is sent to Node B as replying.Reply by this, Node B can be determined the position of UE in the sub-district.Utilize this information that the grouped data of needs transmission through PDSCH resource spatially directionally be sent to UE by Node B this moment.After receiving PDSCH at every turn, send described PUSCH by UE with the form of replying subsequently, and also receive this PUSCH by Node B spatial orientation ground.By this Return Channel, Node B can correctly carry out beam-shaping in the whole time of packet data transmission and/or wave beam is followed the tracks of.
According to present prior art, can not want corresponding PUSCH resource yet and in down link, carry out pure unidirectional packet data transmission through PDSCH.But can not carry out beam-shaping and/or wave beam in this case follows the tracks of.
Summary of the invention
The present invention based on task be a kind of method of suggestion, a kind of device, a kind of emission and/or receiving element and a kind of communication system, they are the packet data transmission selected of implementation space effectively.
In view of the above, the invention discloses a kind of method, utilize it in UMTS1.28Mcps tdd mode TD-SCDMA, to carry out the packet data transmission that the space is selected to mobile radio unit.At this, method of the present invention comprises following three features:
-the Return Channel of uplink pilot channel UpPCH as physical down link sharing channel PDSCH,
-transmit a uplink synchronisation sign indicating number SYNC-UL sign indicating number as the replying of PDSCH that is received, and
-send the described SYNC-UL sign indicating number that needs transmission by the distinctive intermediate sequence of PDSCH with signaling.
Even if the group data transmission method that space of the present invention is selected also can be realized beam-shaping or wave beam and follow the tracks of under the situation of carrying out unidirectional packet data transmission through physical down link sharing channel PDSCH, its method is with the resource effective and efficient manner uplink pilot channel UpPCH to be used as Return Channel.Utilize this mode can reduce disturbing effect widely, such as multichannel insert interference.Therefore, not all UE that sends is received for a long time by Node B, but the UE that has only those to be monitored or to receive and handle as well as possiblely.Cause simplifying greatly signal processing thus and selected common each signal that receives.In addition, therefore also reduced the transmitting power of Node B and UE.
In down link, realize described PDSCH and UpPCH signaling with the SYNC-UL sign indicating number by the Physical Shared Channel assignment messages.
Other advantage can be referring to following explanation to embodiment.
Description of drawings
Illustrate the present invention below with reference to accompanying drawing and by the technical merit of describing embodiment in detail:
Fig. 1 shows a mobile wireless sub-district with sketch, wherein carries out the packet data transmission of space selection to realize known power adjustments to a plurality of as the mobile station UE shown in the block diagram 1, UE2, UE3 from base-station node B;
Fig. 2 shows the time course of the bi-directional packet data transmission that utilizes PDSCH and PUSCH;
Fig. 3 shows the frame structure among the TD-SCDMA;
Fig. 4 shows the structure of traffic burst;
Fig. 5 shows the burst structure of downlink synchronization pulse train;
Fig. 6 shows the burst structure of uplink synchronisation pulse train, and
Fig. 7 shows the time course of the unidirectional packet data transmission of utilizing PDSCH and UpPCH.
Embodiment
Hereinafter the technical term that is adopted is with above basic identical, as in the art the professional used always.But must be pointed out that herein this paper relates generally to english terminology, and do not provide its Germanization commonly used.
Figure 1 illustrates an embodiment, wherein base-station node B carries out the transfer of data that the space is selected to a plurality of user terminal UE1, UE2, UE3.Set up antenna groups to Node B, it was both also constituting a plurality of directional characteristics under the emission situation simultaneously under the reception situation for this reason.Form the radiation that the space is selected to each UE thus, or carry out the reception that the space is selected from each UE.Utilize this mode can reduce disturbing effect greatly, such as multichannel insert interference.
In diagram shown in Figure 2, provided the process of the packet data transmission of the space selection of being undertaken by shared channel, with a kind of existing possibility as beam-shaping that is used for packet data transmission among the TD-SCDMA and/or wave beam tracking.Under any circumstance, Node B all always needs the Return Channel of corresponding UE for this reason, and shown in the in full reportedly defeated arrow, it is transmitted to Node B by physical uplink link sharing channel PUSCH from UE.
For methods of this invention will be better understood, existing frame and the structure of time slot of telling about simply among the TD-SCDMA.In TD-SCDMA, a channel is divided into 10 time slots, framing or subframe and described time slot is combined.In Fig. 3, show corresponding frame structure briefly.A frame has the length of 10ms, and a subframe is that 5ms is long.In time slot inside with fixing structure, also be the data that so-called burst transmission need transmit.The time slot that three types are arranged herein, it has corresponding pulse train: traffic burst, downlink synchronization pulse train and uplink synchronisation pulse train.
Described traffic burst is used in time slot Ts0, Ts1 ..., among the Ts6, and form, i.e. an intermediate sequence part and a guard time GP who is used for channel estimating by two data blocks.Described pulse train is made up of 864 chips altogether, sees Fig. 4.Each data block is made of 352 chips.Described intermediate sequence has the length of 144 chips, and GP is 16 chip lengths.
Utilization is defined in TD-SCDMA, be equivalent to the chip time delay for the 1.28Mcps sign indicating number of Tc=781.25ns frequently, the length of described traffic burst is 675 μ s.At time slot Ts0, Ts1 ..., among the Ts6 16 traffic burst can be set at most, these pulse trains are distinguished by its spreading code.According to spreading factor, each pulse train can transmit the data of varying number.
The downlink synchronization pulse train only uses in down link pilot timeslot DwPTS, and is made up of the SYNC-DL-piece that the length guard time that is 32 chips and length are 64 chips, referring to Fig. 5.Correspondingly, the uplink synchronisation pulse train only uses in uplink pilot time slot UpPTS, and the guard time GP that is 32 chips by the length SYNC-UL-piece that is 128 chips and length forms, as Fig. 6 briefly shown in.Between described two kinds of synchronization bursts, be provided with one the 96 long guard time of chip, be used to stop the phase mutual interference.
In TD-SCDMA, the peculiar sign indicating number in all sub-districts also is that SYNC-DL sign indicating number, SYNC-UL sign indicating number, scrambler and basic intermediate sequence sign indicating number are combined into 32 code groups altogether.The table 1 that specification provides has at last provided the code group among the TD-SCDMA and has formed overview.Each wireless area is configured certain code group.If for example a sub-district has been configured code group 1, then it to use an ID be 0 downlink synchronization code SYNC-DL sign indicating number, ID is one in 4 of the 0-3 possible basic intermediate sequence sign indicating numbers as 8 uplink synchronisation sign indicating number SYNC-UL sign indicating numbers of 0-7, ID as one in 4 possible scramblers of 0-3 and ID.
At this moment, follow the tracks of, select described UpPCH, in UpPTS, transmit the distinctive SYNC-UL sign indicating number in sub-district by this channel as Return Channel in order also to carry out beam-shaping and/or wave beam under the situation of carrying out unidirectional packet data transmission at down link by PDSCH.Use UpPCH to have following advantage, promptly this UpPCH shows as the effective solution of a kind of resource: transmission SYNC-UL sign indicating number is to represent one 1 bit information in principle.In addition, UpPCH does not also need spreading code, scrambler or intermediate sequence sign indicating number.
As mentioned above, one have 256 SYNC-UL sign indicating numbers.Be used for uplink synchronisation but there are 8 sign indicating numbers in corresponding sub-district, to be reserved at every turn, therefore be not considered for beam-shaping and/or wave beam and follow the tracks of.In principle, remaining 256-8=248 sign indicating number can be used to beam-shaping and/or wave beam tracking, but maximum 8 codes are just enough.Therefore, if Node B is want by PDSCH grouped data to be sent to UE, then this UE should tell UE by FACH or S-CCPCH with signaling in advance: should use which 8 code in 248 SYNC-UL sign indicating numbers being considered for this reason.After each reception PDSCH, UE is subsequently as one that replys in 8 possible SYNC-UL sign indicating numbers of UpPCH transmission.At this, send the SYNC-UL sign indicating number that needs to transmit with signaling and realize by the distinctive intermediate sequence of described PDSCH.Provided in the table 2 that specification provides at last and be used for related between intermediate sequence that beam-shaping and/or wave beam follow the tracks of and the SYNC-UL sign indicating number, it has defined the relations of distribution of corresponding intermediate sequence sign indicating number and SYNC-UL sign indicating number according to code group.
Data through PDSCH and S-CCPCH are to transmit with the form of traffic burst.Because spreading factor maximum in TD-SCDMA is 16, so each time slot can transmit 16 different physical channels.Therefore 16 different intermediate sequence sign indicating numbers also are provided altogether, and they are generated by the distinctive basic intermediate sequence sign indicating number in sub-district.
If this moment, for example Node B sent following signaling by FACH or S-CCPCH to UE, promptly should adopt the uplink synchronisation sign indicating number of code group 32 to be used for beam-shaping and/or wave beam tracking, so, can use the SYNC-UL sign indicating number of I D as 248-255 for this reason.As replying of S-CCPCH that is received or PDSCH, transmit described SYNC-UL sign indicating number by the UE that in S-CCPCH or PDSCH, is sent by the distinctive intermediate sequence of PDSCH.Therefore, if S-CCPCH or PDSCH and intermediate sequence m (1) or m (9) together transmit, then UE sends described SYNC-UL sign indicating number 248 through UpPCH.
Supposition in an embodiment of the present invention to wireless area configuration code group 1, and utilizes PDSCH to come unidirectional packet data transmission is carried out beam-shaping and/or wave beam tracking with code group 32 in down link.In addition, need transmit S-CCPCH and PDSCH with the form of traffic burst with intermediate sequence m (9).Figure 7 illustrates the unidirectional packet data transmission the space that utilizes PDSCH and UpPCH selected-also promptly the transfer of data from Node B to UE-time course.
Node B is planned with the resource effective and efficient manner and is utilized beam-shaping and/or wave beam is followed the tracks of packet is sent to UE through PDSCH.For this reason, Node B is at first informed UE by the Physical Shared Channel assignment messages: give packet data transmission in the down link next which PDSCH and UpPCH resource allocation with the form of the SYNC-UL sign indicating number of selected code group 32.Also notify in addition and in which time interval, distribute this resource.Described Physical Shared Channel assignment messages is sent to UE by FACH or S-CCPCH.At this, S-CCPCH is transferred to whole sub-district from Node B, because this sub-district does not know also at this moment where UE is positioned at the sub-district.If relevant user receives this message, then described UpPCH is sent to Node B as replying.For this reason, UE sends described SYNC-UL sign indicating number 248 according to this signaling by transmission intermediate sequence m (9) in S-CCPCH in UpPCH, referring to table 2.
Reply by this, Node B can be determined the position of UE in the sub-district.Utilize this information, by Node B at this moment the grouped data of need transmission through having intermediate sequence m (9) the PDSCH resource and spatial orientation send to UE.After each reception PDSCH, as replying the UpPCH that sends the described SYNC-UL of having sign indicating number 248, this UpPCH is equally also received by Node B spatial orientation ground UE subsequently.By this Return Channel, Node B can correctly carry out beam-shaping in the whole time of packet data transmission and/or wave beam is followed the tracks of.
Especially combine the background data of UMTS 1.28Mcps tdd mode TD-SCDMA in following source:
[1] 3GPP TS 25.221 V4.2.0 (2001-09): the mapping of physical channel and transport channel to physical channel (TDD)
[2] 3GPP TS 25.222 V4.1.0 (2001-09): multiplexed and chnnel coding (TDD)
[3] 3GPP TS 25.223 V4.2.0 (2001-09): spread spectrum and modulation (TDD)
[4] 3GPP TS 25.224 V4.2.0 (2001-09): physical layer process (TDD)
[5] 3GPP TS 25.225 V4.2.0 (2001-09): physical layer is measured (TDD)
| Code group | Associated code | |||
| SYNC-DL ID | SYNC-UL ID | Scrambler ID | Basic intermediate sequence sign indicating number ID | |
| 1 | 0 | 0...7 | 0 | 0 |
| 1 | 1 | |||
| 2 | 2 | |||
| 3 | 3 | |||
| 2 | 1 | 8...15 | 4 | 4 |
| 5 | 5 | |||
| 6 | 6 | |||
| 7 | 7 | |||
| | ||||
| 32 | 31 | 248...255 | 124 | 124 |
| 125 | 125 | |||
| 126 | 126 | |||
| 127 | 127 | |||
Table 1
| Intermediate sequence | SYNC-UL ID | |||
| Code group | ||||
| 1 | 2 | ... | 32 | |
| m(1)，m(9) | 0 | 8 | ... | 248 |
| m(2)，m(10) | 1 | 9 | ... | 249 |
| m(3)，m(11) | 2 | 10 | ... | 250 |
| m(4)，m(12) | 3 | 11 | ... | 251 |
| m(5)，m(13) | 4 | 12 | ... | 252 |
| m(6)，m(14) | 5 | 13 | ... | 253 |
| m(7)，m(15) | 6 | 14 | ... | 254 |
| m(8)，m(16) | 7 | 15 | ... | 255 |
Table 2
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10158750.3 | 2001-11-30 | ||
| DE10158750A DE10158750B4 (en) | 2001-11-30 | 2001-11-30 | Method and device for carrying out a spatially selective packet data transmission |
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| Publication Number | Publication Date |
|---|---|
| CN1422087A CN1422087A (en) | 2003-06-04 |
| CN1268142C true CN1268142C (en) | 2006-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN02154714.9A Expired - Fee Related CN1268142C (en) | 2001-11-30 | 2002-11-29 | Method of packet data transmission for executing space selection |
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| DE (1) | DE10158750B4 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10352622A1 (en) * | 2003-11-12 | 2005-06-16 | Bayerische Motoren Werke Ag | Method and device for quenching workpieces |
| CN100372247C (en) * | 2004-04-26 | 2008-02-27 | 北京天碁科技有限公司 | Downstream synchronization monitoring apparatus and method for mobile terminal and application thereof |
| CN101137135B (en) * | 2006-09-01 | 2011-06-29 | 电信科学技术研究院 | Base station and method for transmitting control scheduling information |
| CN100521688C (en) * | 2007-04-06 | 2009-07-29 | 艾利森电话股份有限公司 | High-speed down packet accessing method for supporting medium-low speed data user in TD-SCDMA |
| EP2106186A1 (en) * | 2008-03-28 | 2009-09-30 | Nokia Siemens Networks Oy | Method for transmitting signals in uplink direction in a 3G mobile radio communication system |
| GB2487782B (en) * | 2011-02-04 | 2015-05-20 | Sca Ipla Holdings Inc | Telecommunications method and system |
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- 2001-11-30 DE DE10158750A patent/DE10158750B4/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| DE10158750A1 (en) | 2003-06-12 |
| DE10158750B4 (en) | 2013-10-31 |
| CN1422087A (en) | 2003-06-04 |
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