CN101594683A - Method for transmitting signals and system during a kind of carrier aggregation - Google Patents

Method for transmitting signals and system during a kind of carrier aggregation Download PDF

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Publication number
CN101594683A
CN101594683A CNA2009101506077A CN200910150607A CN101594683A CN 101594683 A CN101594683 A CN 101594683A CN A2009101506077 A CNA2009101506077 A CN A2009101506077A CN 200910150607 A CN200910150607 A CN 200910150607A CN 101594683 A CN101594683 A CN 101594683A
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srs
component carrier
pucch
transmission parameter
transmission
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CN101594683B (en
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张戎
郝鹏
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Shenzhen Fu Hai Sunshine Technology Co., Ltd.
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ZTE Corp
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Priority to PCT/CN2010/072690 priority patent/WO2010145361A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure

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  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Method for transmitting signals and system during a kind of carrier aggregation, this method comprises: the base station is the Physical Uplink Control Channel PUCCH transmission parameter and/or the measuring reference signals SRS transmission parameter of user equipment (UE) configuration one-component carrier wave or a plurality of component carriers, and above-mentioned transmission parameter is sent to UE; UE transmits PUCCH and/or SRS according to the described transmission parameter of each component carrier at the component carrier of correspondence respectively.The both compatible LTE UE of multiplex transmission method of the present invention PUCCH and SRS under state of carrier aggregation can use on a plurality of carrier waves by ensuring escapement from confliction again, and can maximize the utilization ratio of frequency spectrum.

Description

Method for transmitting signals and system during a kind of carrier aggregation
Technical field
The present invention relates to the communications field, the method for transmitting signals when relating in particular to a kind of carrier aggregation.
Background technology
Long Term Evolution (Long Term Evolution abbreviates LTE as) system is the essential planning of third generation partnership.Fig. 1 shows the structural representation of basic frame structure in the LTE system; As shown in Figure 1, frame structure is divided into radio frames, field, subframe, time slot and five grades of symbol.Wherein, the length of a radio frames is 10ms, and a radio frames is made up of two fields, the length of each field is 5ms, and a field is made up of 5 subframes, and the length of each subframe is 1ms, a subframe is made of two time slots, and the length of each time slot is 0.5ms.In each time slot, 7 single-carrier frequency division multiple access (SC-FDMA) symbol is arranged when the regular circulation prefix, 6 SC-FDMA symbols are arranged when extended cyclic prefix.
Measuring reference signals, be also referred to as Sounding reference signal (Sounding Reference Signal, abbreviate SRS as) be a kind of subscriber equipment (User Equipment, abbreviate UE as) and the base station between be used for measuring the signal of radio channel information (channel state information abbreviates CSI as).In LTE, subscriber equipment (UE) is according to the parameters such as bandwidth, frequency domain position, cycle and sub-frame offset of base station (e-node-B abbreviates eNB as) indication, timed sending uplink SRS.ENB judges the up CSI of UE according to the SRS signal that receives, and carries out operations such as frequency domain selection scheduling, closed-loop power control according to the CSI that obtains.
In LTE, UE only sends SRS on last symbol of subframe.UE sends configuration and four relating to parameters of SRS in time domain: the cycle (T of sub-district proprietary (cell-specific) SFC) and sub-frame offset (Δ SFC), and the cycle (T of UE proprietary (UE-specific) SRS) and sub-frame offset (T Offset).
Table 1,2 has provided cycle (being also referred to as configuration cycle, Configuration Period) and the sub-frame offset (being also referred to as the transmission biasing, Transmission offset) of cell-specific in Frequency Division Duplexing (FDD) (FDD) and time division duplex (TDD) system respectively.The cycle of cell-specific and sub-frame offset have provided the time domain subframe position that all UE in the sub-district may send SRS, and on other subframes, and last SC-FDMA symbol can not be used for sending SRS.As shown in Figure 2, be example with SRS sub-frame configuration srsSubframeConfiguration=7 in the table 1, T SFC=5, Δ SFC=0, and 1}, then cell-specific SRS transmission cycle is 5 subframes in the sub-district, subframe 0 and subframe 1 position in each cycle can be used for sending SRS by the UE in the sub-district.
srs SubframeConfiguration Binary Configuration Peri od T SFC (subframes) Transmission offset Δ SFC (subframes)
0 0000 1 {0}
1 0001 2 {0}
2 0010 2 {1}
3 0011 5 {0}
4 0100 5 {1}
5 0101 5 {2}
6 0110 5 {3}
7 0111 5 {0，1}
8 1000 5 {2，3}
9 1001 10 {0}
10 1010 10 {1}
11 1011 10 {2}
12 1100 10 {3}
13 1101 10 {0，1，2，3，4，6，8}
14 1110 10 {0，1，2，3，4，5，6， 8}
15 1111 reserved reserved
Table 1:FDD SRS sub-frame configuration
srsSubframeConfiguration Binary Configuration Period T SFC (subframes) Transmission offset Δ SFC (subframes)
0 0000 5 {1}
1 0001 5 {1，2}
2 0010 5 {1，3}
3 0011 5 {1，4}
4 0100 5 {1，2，3}
5 0101 5 {1，2，4}
6 0110 5 {1，3，4}
7 0111 5 {1，2，3，4}
8 1000 10 {1，2，6}
9 1001 10 {1，3，6}
10 1010 10 {1，6，7}
11 1011 10 {1，2，6，8}
12 1100 10 {1，3，6，9}
13 1101 10 {1，4，6，7}
14 1110 reserved reserved
15 1111 reserved reserved
Table 2:TDD SRS sub-frame configuration
Table 3 and table 4 have provided respectively in FDD and the TDD system, and the SRS of UE-specific sends cycle (SRS Periodicity) and sub-frame offset (SRS Subframe Offset).The cycle of UE-specific and sub-frame offset have provided time domain cycle and the subframe position of certain UE transmission SRS.As shown in Figure 3, with SRS configuration index in the table 3 (SRS Configuration Index) I SRS=17 is example, and the every 20ms of UE sends a SRS reference signal, sends on its time-domain position first subframe in 20ms.
SRS Configuration Index I SRS SRS Periodicity T SRS(ms) SRS Subframe Offset T offset
0-1 2 I SRS
2-6 5 I SRS-2
7-16 10 I SRS-7
17-36 20 I SRS-17
37-76 40 I SRS-37
77-156 80 I SRS-77
157-316 160 I SRS-157
317-636 320 I SRS-317
637-1023 reserved reserved
Table 3:FDD UE Specific SRS sends period T SRSWith sub-frame offset T Offset
Configuration Index I SRS SRS Periodicity T SRS(ms) SRS Subframe Offset T offest
0 2 0，1
1 2 0，2
2 2 1，2
3 2 0，3
4 2 1，3
5 2 0，4
6 2 1，4
7 2 2，3
8 2 2，4
9 2 3，4
10-14 5 I SRS-10
15-24 10 I SRS-15
25-44 20 I SRS-25
45-84 40 I SRS-45
85-164 80 I SRS-85
165-324 160 I SRS-165
325-644 320 I SRS-325
645-1023 reserved reserved
Table 4:TDD UE Specific SRS sends period T SRSWith sub-frame offset T Offset
LTE has defined Physical Uplink Control Channel (Physical Uplink Control Channel, abbreviate PUCCH as), be used to send upstream control signaling, comprise uplink scheduling request (SchedulingRequest, abbreviate SR as), ack/nack response message (Acknowledged/Non-acknowledged, abbreviate ACK/NACK as), channel quality indication (Channel QualityIndicator, abbreviate CQI as), pre-coding matrix indication (Precoding Matrix Indicator is called for short PMI), and space order indication (Rank Indicator abbreviates RI as).
The form of PUCCH (format) is divided into six kinds of format 1, format 1a, format 1b and format 2, format 2a, format 2b; Wherein, format 1 is used to transmit the uplink scheduling solicited message of 1 bit, and expression has or do not have SR; Format 1a is used to transmit the ACK/NACK information of the single codeword stream of 1 bit; Format 1b is used to transmit the ACK/NACK information of two streams of code words of 2 bits, wherein, and the ACK/NACK information of corresponding 1 bit of each streams of code words; Format 2 is used to transmit CQI/PMI and RI information; Format 2a is used to transmit CQI/PMI/RI information and single codeword stream ACK/NACK information; Format 2b is used to transmit CQI/PMI/RI information and two streams of code words ACK/NACK information; PUCCH format 2a and format 2b are used for the scene that Cyclic Prefix is the regular circulation prefix.
Fig. 4 shows the frequency domain position schematic diagram of Physical Uplink Control Channel in the LTE system; Wherein, n PRBBe RB (Resource Block, Resource Block) call number, m is the PUCCH channel logo; As shown in Figure 4, the resource of two Resource Block of each PUCCH channel occupancy, its frequency domain are 12 subcarriers, and time domain is 14 symbols (regular circulation prefix) or 12 symbols (extended cyclic prefix).
For PUCCH format1/1a/1b, the ACK/NACK information of the SR information of 1 bit or 1 bit/2 bits will be passed through frequency domain expansion, expands on 12 subcarriers of PUCCH channel.For PUCCH format2/2a/2b, the CQI/PMI/RI that it is entrained also needs to expand on 12 subcarriers of PUCCH channel through frequency domain expansion.The used frequency domain expansion sign indicating number (being also referred to as the frequency domain expansion sequence) of PUCCH is to be CAZAC (the ConstantAmplitude Zero Auto-correlation Code that 12 computer search comes out with a length, the permanent width of cloth zero auto-correlation) sequence obtains through cyclic shift as basic sequence.
Under the situation of regular circulation prefix, described frequency domain expansion sequence is reused 7 times described sequence of mapping on 12 frequency domain positions on each symbol of a Resource Block.For PUCCHformat2/2a/2b, each time slot (#0 wherein, #2, #3, #4, #6) sequence on the symbol is as the transfer of data of PUCCH channel, each time slot (#1, #5) sequence on the symbol is as the transmission of the demodulated reference signal (Demodulation Reference Signal abbreviates DMRS as) of PUCCH channel, as shown in Figure 5.For PUCCH format1/1a/1b, wherein each time slot (#0, #1, #5, #6) sequence on the symbol is as the transfer of data of PUCCH channel, (#4) sequence on the symbol is as the transmission of the DMRS of PUCCH channel, as shown in Figure 6 for #2, #3 for each time slot.
Under the situation of extended cyclic prefix, described frequency domain expansion sequence is reused 6 times described sequence of mapping on 12 frequency domain positions on each symbol of a Resource Block.For PUCCHformat2, wherein each time slot (#0, #1, #3, #4, #5) sequence on the symbol is as the transfer of data of PUCCH channel, the sequence on each time slot (#2) symbol is as the DMRS transmission of PUCCH channel, as shown in Figure 7.For PUCCH format1/1a/1b, wherein each time slot (#0, #1, #4, #5) sequence on the symbol is as the transfer of data of PUCCH channel, (#2, #3) sequence on the symbol is as the transmission of the DMRS of PUCCH channel, as shown in Figure 8 for each time slot.
For PUCCH format1/1a/1b, the SR information of 1 bit, the perhaps ACK/NACK information via frequency domain expansion of 1 bit/2 bits, expand on 12 subcarriers of PUCCH channel after, also need to expand to 4 by time domain orthogonal sign indicating number (Orthogonal sequences) ( N SF PUCCH = 4 ) Perhaps 3 ( N SF PUCCH = 3 ) On the time-domain symbol, selected time domain extended code is respectively shown in table 5 and table 6, by the employed cyclic shift quantity of PUCCH format 1/1a/1b on PUCCH resource index, the component carrier, and time slot numbering (n S) etc. parameter table look-up definite.
Sequence index n oc(n s) Orthogonal sequences [w(0)…w(N SF PUCCH-1)]
0 [+1 +1 +1 +1]
1 [+1 -1 +1 -1]
2 [+1 -1 -1 +1]
Table 5: time domain orthogonal sign indicating number ( N SF PUCCH = 4 )
Sequence index n oc(n s) Orthogonal sequences [w(0)…w(N SF PUCCH-1)]
0 [1 1 1]
1 [1 e j2π/3 e j4π/3]
2 [1 e j4π/3 e j2π/3]
Table 6: time domain orthogonal sign indicating number ( N SF PUCCH = 3 )
As shown in Figure 9, when PUCCH format1/1a/1b passes through the time domain orthogonal sign indicating number, when expanding on 3 time-domain symbol, PUCCH has used a SC-FDMA symbol less in a time slot, promptly only use 6 symbols (regular circulation prefix) or 5 symbols (extended cyclic prefix), this structure is called the brachymemma structure of PUCCH.At this moment last symbol in this time slot can be used for sending SRS by UE.
In LTE, in order to make UE keep lower power peak-to-average force ratio (Peak to Average PowerRatio, be called for short PAPR), the single-carrier property in the time of need in up link, remaining UE transmission data, these data that just require UE to send must be continuous on frequency domain.Yet as shown in Figure 4, the frequency domain position of PUCCH is the two ends of whole frequency band, and the frequency domain position of SRS does not link to each other with PUCCH usually, so for a UE, PUCCH and SRS can not send simultaneously, so just need to consider in the subframe both multiplexing methods.
In LTE, whether PUCCH and SRS can multiplexingly depend on the form of PUCCH, and are used to represent the top signaling (Simultaneous-AN-and-SRS) that whether allows PUCCH and SRS to transmit simultaneously, and follow following principle:
UE in the sub-district can only send SRS on the sub-frame offset that cell-specific allowed, can not send SRS on other subframe position, and UE can only send SRS on last symbol in subframe;
If UE has PUCCH format 2/2a/2b to send, then in this subframe, can not send SRS; This is because PUCCH format 2/2a/2b does not have the brachymemma structure, in order to guarantee the single-carrier property on last character position, therefore can not send SRS;
If UE has PUCCH format 1/1a/1b to send, and top signaling Simultaneous-AN-and-SRS is False (promptly not allowing PUCCH and SRS to transmit simultaneously), then UE can not send SRS; This is that PUCCH format 1/1a/1b does not adopt the brachymemma structure, is the bonding carrier characteristics because in this case, and UE can not in the end send SRS on a character position;
If UE has PUCCH format 1/1a/1b to send, and top signaling Simultaneous-AN-and-SRS is Ture (promptly allowing PUCCH and SRS to transmit simultaneously), then UE can use the brachymemma structure of PUCCH to send PUCCH in subframe, and in the end a symbol sends SRS; In addition, all UE in the sub-district will adopt the brachymemma structure to send PUCCH in this case, to avoid causing the interference between PUCCH to strengthen owing to orthogonal code length is different.
LTE-Advanced (senior Long Term Evolution is also referred to as Further Advancements forE-UTRA) is the evolution version of LTE.Except that satisfying or surpassing 3GPP TR 25.913: all related needs of " Requirementsfor Evolved UTRA (E-UTRA) and Evolved UTRAN (E-UTRAN) " (" demand of the global communication wireless access of evolution and the universal mobile telecommunications system land radio access web of evolution "), also will meet or exceed the demand of the IMT-Advanced of ITU-R (wireless department of Union of International Telecommunication) proposition.Wherein, the demand with the LTE backward compatibility is meant: the terminal of LTE can be worked in the network of LTE-Advanced; The terminal of LTE-Advanced can be worked in the network of LTE.
In addition, LTE-Advanced should be able to comprise frequency spectrum configuration (as the continuous frequency spectrum resource of 100MHz) the down work wideer than LTE, to reach higher performance and target peak speed in the frequency spectrum configuration of different sizes.Because the LTE-Advanced network needs to insert LTE user, so its operational frequency bands need cover present LTE frequency range, has not had the spectral bandwidth of assignable continuous 100MHz on this frequency range.So the technical problem that LTE-Advanced need solve is that several continuous component carrier frequency (frequency spectrum) (Component carrier) polymerizations that are distributed on the different frequency range are got up to form the operable 100MHz bandwidth of LTE-Advanced.Promptly for the frequency spectrum after the polymerization, be divided into n component carrier frequency (or component carrier) (Component carrier), the frequency spectrum in each component carrier frequency (or component carrier) is continuous.
The configuration of LTE-Advanced frequency spectrum is made up of by spectrum aggregation (carrieraggregation) a plurality of component carrier frequency; Wherein, the gathering of above-mentioned frequency spectrum can be the gathering of continuous frequency spectrum, also can be the gathering of discontinuous spectrum.LTE UE can insert the frequency band of compatible LTE, and LTE-A UE promptly can insert the frequency band of LTE compatibility, also can insert the frequency band of LTE-Advanced.For the TDD system, frequency spectrum can be polymerized by a plurality of component carrier frequency, all is both to be useful on up subframe on each component carrier frequency, also is useful on descending subframe.For the FDD system, uplink spectrum and downstream spectrum all are polymerized by component carrier frequency, and the upstream components carrier number can be identical with the downlink component carrier number, also can be different.
Consider and the compatibility of LTE that each component carrier frequency of LTE-Advanced can be used for sending PUCCH and/or SRS.This considers how to handle the transmission problem of PUCCH and/or SRS with regard to needs on a plurality of component carriers, and the current concrete grammar that also when carrier aggregation, PUCCH and SRS is not carried out multiplexing transmission.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiencies in the prior art, method for transmitting signals and system when a kind of carrier aggregation is provided, when being implemented in carrier aggregation to the multiplexing transmission of PUCCH and SRS.
In order to address the above problem, the method for transmitting signals when the invention provides a kind of carrier aggregation, this method comprises:
The base station is the Physical Uplink Control Channel PUCCH transmission parameter and/or the measuring reference signals SRS transmission parameter of user equipment (UE) configuration one-component carrier wave or a plurality of component carriers, and above-mentioned transmission parameter is sent to UE;
UE transmits PUCCH and/or SRS according to the described transmission parameter of each component carrier at the component carrier of correspondence respectively.
In addition, comprise in the SRS transmission parameter of described component carrier: be used to represent whether to allow on described component carrier the top signaling of transmitting SRS and PUCCH simultaneously;
Be 1 when UE need allow the subframe transmitting SRS of transmitting SRS and form in the pairing component carrier of described SRS transmission parameter, during the PUCCH of 1a or 1b:
If the top signaling on the described component carrier allows to transmit PUCCH and SRS simultaneously on described component carrier, then UE uses brachymemma structural transmission PUCCH in this subframe of this component carrier, and on last symbol of this subframe transmitting SRS; If the top signaling on the described component carrier does not allow to transmit simultaneously PUCCH and SRS on described component carrier, then UE uses conventional form transmission PUCCH in this subframe of this component carrier, and abandons SRS.
In addition, the base station sends to described UE with described PUCCH transmission parameter on the descending sub frame of downlink component carrier or component carrier;
Described UE is known the PUCCH transmission parameter institute respective components carrier wave that carries on the descending sub frame of described downlink component carrier or component carrier according to the signaling of rule that sets in advance or base station transmission.
In addition, the base station sends to described UE with described SRS transmission parameter on the descending sub frame of downlink component carrier or component carrier;
Described UE is known the SRS transmission parameter institute respective components carrier wave that carries on the descending sub frame of described downlink component carrier or component carrier according to the signaling of rule that sets in advance or base station transmission.
In addition, UE transmitting SRS on last symbol of the subframe of component carrier only.
In addition, when need allowing the subframe transmitting SRS of transmitting SRS and form in component carrier, UE is 2, during the PUCCH of 2a or 2b, this subframe transmission PUCCH of UE on this component carrier then, and abandon SRS.
Signal transmission system when the present invention also provides a kind of carrier aggregation, this system comprises UE and base station, it is characterized in that, is provided with in the described base station: transmission parameter dispensing unit and transmission parameter transmitting element; Be provided with among the described UE: transmission parameter receiving element and signal transmission unit; Wherein:
Described transmission parameter dispensing unit is used to the PUCCH transmission parameter and/or the SRS transmission parameter of described UE configuration one-component carrier wave or a plurality of component carriers, and it is outputed to described transmission parameter transmitting element;
Described transmission parameter transmitting element is used for described PUCCH transmission parameter and/or SRS transmission parameter are sent to described UE;
Described transmission parameter receiving element is used to receive described PUCCH transmission parameter and/or SRS transmission parameter, and it is outputed to described signal transmission unit;
Described signal transmission unit is used for respectively according to the described transmission parameter of each component carrier component carrier transmission PUCCH and/or the SRS in correspondence.
In addition, comprise in the SRS transmission parameter of described component carrier: be used to represent whether to allow on described component carrier the top signaling of transmitting SRS and PUCCH simultaneously;
Be 1 when described signal transmission unit need allow the subframe transmitting SRS of transmitting SRS and form in the pairing component carrier of described SRS transmission parameter, during the PUCCH of 1a or 1b:
If the top signaling on the described component carrier allows to transmit simultaneously PUCCH and SRS on described component carrier, then described signal transmission unit uses brachymemma structural transmission PUCCH in this subframe of this component carrier, and on last symbol of this subframe transmitting SRS; If the top signaling on the described component carrier does not allow to transmit simultaneously PUCCH and SRS on described component carrier, then described signal transmission unit uses conventional form transmission PUCCH in this subframe of this component carrier, and abandons SRS.
In addition, be 2 when described signal transmission unit need allow the subframe transmitting SRS of transmitting SRS and form in the pairing component carrier of described SRS transmission parameter, during the PUCCH of 2a or 2b:
This subframe transmission PUCCH of described signal transmission unit on this component carrier, and abandon SRS.
In addition, described transmission parameter transmitting element sends to described UE with described PUCCH transmission parameter on the descending sub frame of downlink component carrier or component carrier;
Described signal transmission unit is known the PUCCH transmission parameter institute respective components carrier wave that carries on the descending sub frame of described downlink component carrier or component carrier according to the signaling of rule that sets in advance or base station transmission.
In addition, described transmission parameter transmitting element sends to described UE with described SRS transmission parameter on the descending sub frame of downlink component carrier or component carrier;
Described signal transmission unit is known the SRS transmission parameter institute respective components carrier wave that carries on the descending sub frame of described downlink component carrier or component carrier according to the signaling of rule that sets in advance or base station transmission.
In sum, the both compatible LTE UE of multiplex transmission method of the present invention PUCCH and SRS under state of carrier aggregation can use on a plurality of carrier waves by ensuring escapement from confliction again, and can maximize the utilization ratio of frequency spectrum.
Description of drawings
Fig. 1 is the wireless frame structure schematic diagram of LTE system;
Fig. 2 is that the SRS of the cell-specific of LTE system sends cycle (T SFC) and sub-frame offset (Δ SFC) schematic diagram;
Fig. 3 is that the SRS of the UE-specific of LTE system sends cycle (T SRS) and sub-frame offset (T Offset) schematic diagram;
Fig. 4 is a LTE system physical ascending control channel frequency domain position schematic diagram;
When Fig. 5 is LTE system convention Cyclic Prefix, PUCCH format 2/2a/2b time-frequency position view;
When Fig. 6 is LTE system convention Cyclic Prefix, PUCCH format 1/1a/1b time-frequency position view;
When Fig. 7 is LTE system extension Cyclic Prefix, PUCCH format 2/2a/2b time-frequency position view;
When Fig. 8 is LTE system extension Cyclic Prefix, PUCCH format 1/1a/1b time-frequency position view;
Fig. 9 is PUCCH of LTE system and SRS when multiplexing, the brachymemma structural representation of employing;
Method for transmitting signals flow chart when Figure 10 is a carrier aggregation of the present invention;
Signal transmission system structural representation when Figure 11 is a carrier aggregation of the present invention.
Embodiment
Core concept of the present invention is that the base station is PUCCH transmission parameter and the SRS transmission parameter that UE disposes each component carrier respectively, and above-mentioned transmission parameter is sent to UE; UE transmits PUCCH and/or SRS according to the above-mentioned transmission parameter of each component carrier at the component carrier of correspondence respectively.
Describe the present invention below in conjunction with drawings and Examples.
Method for transmitting signals flow chart when Figure 10 is a carrier aggregation of the present invention comprises the steps:
1001: the base station disposes the PUCCH transmission parameter for the component carrier that needs transmission PUCCH, and is to need the component carrier of transmission uplink SRS to dispose the SRS transmission parameter respectively.
Above-mentioned SRS transmission parameter including (but not limited to) following one or more:
Figure A20091015060700171
SRS cycle and the sub-frame offset of cell specific on the component carrier;
SRS cycle and the sub-frame offset of UE specific on the component carrier;
Figure A20091015060700173
Be used to represent whether to allow to transmit simultaneously on the component carrier top signaling of PUCCH and SRS.
In the above-mentioned PUCCH transmission parameter including (but not limited to) following one or more:
Figure A20091015060700174
PUCCH resource index on the component carrier;
Figure A20091015060700175
The employed cyclic shift quantity of PUCCH format 1/1a/1b on the component carrier.
1002: the base station sends to UE with the PUCCH transmission parameter of each component carrier on specific downlink component carrier (FDD system) or the descending sub frame (TDD system) at specific component carrier; And the SRS transmission parameter of each component carrier sent to UE on specific downlink component carrier (FDD system) or the descending sub frame (TDD system) at specific component carrier.
Base station and the UE PUCCH transmission which component carrier the PUCCH transmission parameter that descending sub frame carried of above-mentioned specific downlink component carrier or certain components carrier wave is used to dispose of can making an appointment; The base station also can be used to dispose the PUCCH transmission of which component carrier by the PUCCH transmission parameter that descending sub frame carried of above-mentioned specific downlink component carrier of signaling UE or certain components carrier wave.
Equally, base station and the UE SRS transmission which component carrier the SRS transmission parameter that descending sub frame carried of above-mentioned specific downlink component carrier or certain components carrier wave is used to dispose of can making an appointment; The base station also can be used to dispose the SRS transmission of which component carrier by the SRS transmission parameter that descending sub frame carried of above-mentioned specific downlink component carrier of signaling UE or certain components carrier wave.
That is to say that UE can be known PUCCH transmission parameter and the pairing component carrier of SRS transmission parameter that receives according to preset rule; Also can know PUCCH transmission parameter and the pairing component carrier of SRS transmission parameter that receives according to the signaling that the base station sends.
1003:UE judges whether and can transmit PUCCH and SRS simultaneously in the subframe of this component carrier according to the above-mentioned PUCCH transmission parameter of each component carrier and SRS transmission parameter and following principle respectively, to carry out the transmission of PUCCH and/or SRS:
Figure A20091015060700181
Do not allow the subframe of UE transmitting SRS in the base station, can transmit PUCCH, can not transmitting SRS;
Figure A20091015060700182
Allow the subframe of UE transmitting SRS in the base station, the form of Chuan Shu PUCCH is format2/2a/2b if desired, then can transmit PUCCH, can not transmitting SRS;
Figure A20091015060700183
Allow the subframe of UE transmitting SRS in the base station, the form of Chuan Shu PUCCH is format1/1a/1b if desired, then UE judges whether the top signaling in the SRS transmission parameter allows to transmit PUCCH and SRS simultaneously at this component carrier, if allow then can transmit PUCCH and SRS simultaneously in this subframe, otherwise only with transmission PUCCH, can not transmitting SRS.
Below in conjunction with 6 application examples of the present invention said method is elaborated.
Wherein, in application example 1～3, suppose and adopt the FDD system that the upstream components carrier number is 2, is respectively component carrier 1 (CC1) and component carrier 2 (CC2); Supposing the system adopts regular circulation prefix (sending method of extended cyclic prefix is similar with it), and UE needs to transmit PUCCH and SRS on these two component carriers.
Application example 1
The base station disposes the PUCCH transmission parameter for the component carrier that needs transmission PUCCH, and for needing the component carrier configuration SRS transmission parameter of transmission uplink SRS; And each group PUCCH transmission parameter sends to UE on certain specific downlink component carrier, and each group SRS transmission parameter sends to UE on certain specific downlink component carrier.
UE determines PUCCH that each component carrier is proprietary and the multiplexing method (promptly judging whether to allow at this component carrier multiplexing transmission PUCCH and SRS) of SRS according to the above-mentioned transmission parameter that receives; Suppose that UE need transmit PUCCH format 2/2a/2b on CC1 and CC2, then:
Figure A20091015060700184
Do not allow the subframe of the CC1 and the CC2 of UE transmitting SRS in the base station, can transmit PUCCHformat 2/2a/2b, and can not transmitting SRS;
Figure A20091015060700191
Allow the CC1 of UE transmitting SRS and the subframe of CC2 in the base station, if UE does not have PUCCH to need transmission, then can transmitting SRS;
Figure A20091015060700192
Allow the CC1 of UE transmitting SRS and the subframe of CC2 in the base station, if UE need transmit PUCCH format 2/2a/2b, then can not transmitting SRS, only transmit PUCCH.
It should be noted that PUCCH on the upstream components carrier wave (as CC1) and SRS multiplexing method and other upstream components carrier waves (as CC2) are irrelevant.
Application example 2
The base station disposes the PUCCH transmission parameter for the component carrier that needs transmission PUCCH, and for needing the component carrier configuration SRS transmission parameter of transmission uplink SRS; And each group PUCCH transmission parameter sends to UE on certain specific downlink component carrier, and each group SRS transmission parameter sends to UE on certain specific downlink component carrier.
UE determines PUCCH that each component carrier is proprietary and the multiplexing method (promptly judging whether to allow at this component carrier multiplexing transmission PUCCH and SRS) of SRS according to the above-mentioned transmission parameter that receives; Suppose that UE need transmit PUCCH format 2/2a/2b on CC1, transmission PUCCHformat 1/1a/1b on CC2, then:
Figure A20091015060700193
Do not allow the subframe of the CC1 and the CC2 of UE transmitting SRS in the base station, can transmit PUCCH, and can not transmitting SRS;
Figure A20091015060700194
Allow the CC1 of UE transmitting SRS and the subframe of CC2 in the base station, if UE does not have PUCCH to need transmission, then can transmitting SRS;
Allow the subframe on the CC1 of UE transmitting SRS in the base station, if UE need transmit PUCCHformat 2/2a/2b, then UE can not transmitting SRS;
Figure A20091015060700196
Subframe on the CC2 of base station permission UE transmitting SRS if UE need transmit PUCCHformat 1/1a/1b, then judges whether to allow to transmit PUCCH and SRS simultaneously at CC2 according to the top signaling in the SRS transmission parameter of CC2:
If top signaling does not allow to transmit PUCCH and SRS simultaneously at CC2, then UE is at this subframe transmission PUCCH, not transmitting SRS;
If top signaling allows to transmit PUCCH and SRS simultaneously at CC2, then UE uses brachymemma structural transmission PUCCH in this subframe, and on last symbol of this subframe transmitting SRS.
It should be noted that PUCCH on the upstream components carrier wave (as CC1) and SRS multiplexing method and other upstream components carrier waves (as CC2) are irrelevant.
Application example 3
The base station disposes the PUCCH transmission parameter for the component carrier that needs transmission PUCCH, and for needing the component carrier configuration SRS transmission parameter of transmission uplink SRS; And each group PUCCH transmission parameter transmits on certain specific downlink component carrier, and each group SRS transmission parameter transmits on certain specific downlink component carrier.
UE determines PUCCH that each component carrier is proprietary and the multiplexing method (promptly judging whether to allow at this component carrier multiplexing transmission PUCCH and SRS) of SRS according to the above-mentioned transmission parameter that receives; Suppose that UE need transmit PUCCH format 1/1a/1b on CC1 and CC2, then:
Figure A20091015060700201
Do not allow the subframe of the CC1 and the CC2 of UE transmitting SRS in the base station, can transmit PUCCHformat 1/1a/1b, and can not transmitting SRS;
Figure A20091015060700202
Allow the CC1 of UE transmitting SRS and the subframe of CC2 in the base station, if UE does not have PUCCH to need transmission, then can transmitting SRS;
Figure A20091015060700203
Subframe on the CC1 of base station permission UE transmitting SRS if UE need transmit PUCCHformat 1/1a/1b, then judges whether to allow to transmit PUCCH and SRS simultaneously at CC1 according to the top signaling in the SRS transmission parameter of CC1:
If top signaling does not allow to transmit PUCCH and SRS simultaneously at CC1, then UE adopts conventional form transmission PUCCH, not transmitting SRS in this subframe;
If top signaling allows to transmit PUCCH and SRS simultaneously at CC1, then UE uses brachymemma structural transmission PUCCH in this subframe, and on last symbol of this subframe transmitting SRS.
Figure A20091015060700204
Subframe on the CC2 of base station permission UE transmitting SRS if UE need transmit PUCCHformat 1/1a/1b, then judges whether to allow to transmit PUCCH and SRS simultaneously at CC2 according to the top signaling in the SRS transmission parameter of CC2:
If top signaling does not allow to transmit PUCCH and SRS simultaneously at CC2, then UE adopts conventional form transmission PUCCH, not transmitting SRS in this subframe;
If top signaling allows to transmit PUCCH and SRS simultaneously at CC2, then UE uses brachymemma structural transmission PUCCH in this subframe, and on last symbol of this subframe transmitting SRS.
It should be noted that PUCCH on the upstream components carrier wave (as CC1) and SRS multiplexing method and other upstream components carrier waves (as CC2) are irrelevant.
In following application example 4～6, suppose and adopt the TDD system that the component carrier number is 2, is respectively component carrier 1 (CC1) and component carrier 2 (CC2); Supposing the system adopts regular circulation prefix (sending method of extended cyclic prefix is similar with it), and UE needs to transmit PUCCH and SRS on these two component carriers.
Application example 4
The base station disposes the PUCCH transmission parameter for the component carrier that needs transmission PUCCH, and for needing the component carrier configuration SRS transmission parameter of transmission uplink SRS; And each group PUCCH transmission parameter sends to UE on the descending sub frame of certain specific component carrier, and each group SRS transmission parameter sends to UE on the descending sub frame of certain specific component carrier.
UE determines PUCCH that each component carrier is proprietary and the multiplexing method (promptly judging whether to allow at this component carrier multiplexing transmission PUCCH and SRS) of SRS according to the above-mentioned transmission parameter that receives; Suppose that UE need transmit PUCCH format 2/2a/2b on CC1 and CC2, then:
Figure A20091015060700211
Do not allow the subframe of the CC1 and the CC2 of UE transmitting SRS in the base station, can transmit PUCCHformat 2/2a/2b, and can not transmitting SRS;
Allow the CC1 of UE transmitting SRS and the subframe of CC2 in the base station, if UE does not have PUCCH to need transmission, then can transmitting SRS;
Figure A20091015060700213
Allow the CC1 of UE transmitting SRS and the subframe of CC2 in the base station, if UE need transmit PUCCH format 2/2a/2b, then can not transmitting SRS, only transmit PUCCH.
It should be noted that PUCCH on the upstream components carrier wave (as CC1) and SRS multiplexing method and other upstream components carrier waves (as CC2) are irrelevant.
Application example 5
The base station disposes the PUCCH transmission parameter for the component carrier that needs transmission PUCCH, and for needing the component carrier configuration SRS transmission parameter of transmission uplink SRS; And each group PUCCH transmission parameter sends to UE on the descending sub frame of certain specific component carrier, and each group SRS transmission parameter sends to UE on the descending sub frame of certain specific component carrier.
UE determines PUCCH that each component carrier is proprietary and the multiplexing method (promptly judging whether to allow at this component carrier multiplexing transmission PUCCH and SRS) of SRS according to the above-mentioned transmission parameter that receives; Suppose that UE need transmit PUCCH format 2/2a/2b on CC1, transmission PUCCHformat 1/1a/1b on CC2, then:
Figure A20091015060700221
Do not allow the subframe of the CC1 and the CC2 of UE transmitting SRS in the base station, can transmit PUCCH, and can not transmitting SRS;
Figure A20091015060700222
Allow the CC1 of UE transmitting SRS and the subframe of CC2 in the base station, if UE does not have PUCCH to need transmission, then can transmitting SRS;
Figure A20091015060700223
Allow the subframe on the CC1 of UE transmitting SRS in the base station, if UE need transmit PUCCHformat 2/2a/2b, then UE can not transmitting SRS;
Figure A20091015060700224
Subframe on the CC2 of base station permission UE transmitting SRS if UE need transmit PUCCHformat 1/1a/1b, then judges whether to allow to transmit PUCCH and SRS simultaneously at CC2 according to the top signaling in the SRS transmission parameter of CC2:
If top signaling does not allow to transmit PUCCH and SRS simultaneously at CC2, then UE is at this subframe transmission PUCCH, not transmitting SRS;
If top signaling allows to transmit PUCCH and SRS simultaneously at CC2, then UE uses brachymemma structural transmission PUCCH in this subframe, and on last symbol of this subframe transmitting SRS.
It should be noted that PUCCH on the upstream components carrier wave (as CC1) and SRS multiplexing method and other upstream components carrier waves (as CC2) are irrelevant.
Application example 6
The base station disposes the PUCCH transmission parameter for the component carrier that needs transmission PUCCH, and for needing the component carrier configuration SRS transmission parameter of transmission uplink SRS; And each group PUCCH transmission parameter transmits on certain specific downlink component carrier, and each group SRS transmission parameter transmits on certain specific downlink component carrier.
UE determines PUCCH that each component carrier is proprietary and the multiplexing method (promptly judging whether to allow at this component carrier multiplexing transmission PUCCH and SRS) of SRS according to the above-mentioned transmission parameter that receives; Suppose that UE need transmit PUCCH format 1/1a/1b on CC1 and CC2, then:
Figure A20091015060700231
Do not allow the subframe of the CC1 and the CC2 of UE transmitting SRS in the base station, can transmit PUCCHformat 1/1a/1b, and can not transmitting SRS;
Figure A20091015060700232
Allow the CC1 of UE transmitting SRS and the subframe of CC2 in the base station, if UE does not have PUCCH to need transmission, then can transmitting SRS;
Figure A20091015060700233
Subframe on the CC1 of base station permission UE transmitting SRS if UE need transmit PUCCHformat 1/1a/1b, then judges whether to allow to transmit PUCCH and SRS simultaneously at CC1 according to the top signaling in the SRS transmission parameter of CC1:
If top signaling does not allow to transmit PUCCH and SRS simultaneously at CC1, then UE adopts conventional form transmission PUCCH, not transmitting SRS in this subframe;
If top signaling allows to transmit PUCCH and SRS simultaneously at CC1, then UE uses brachymemma structural transmission PUCCH in this subframe, and on last symbol of this subframe transmitting SRS.
Figure A20091015060700234
Subframe on the CC2 of base station permission UE transmitting SRS if UE need transmit PUCCHformat 1/1a/1b, then judges whether to allow to transmit PUCCH and SRS simultaneously at CC2 according to the top signaling in the SRS transmission parameter of CC2:
If top signaling does not allow to transmit PUCCH and SRS simultaneously at CC2, then UE adopts conventional form transmission PUCCH, not transmitting SRS in this subframe;
If top signaling allows to transmit PUCCH and SRS simultaneously at CC2, then UE uses brachymemma structural transmission PUCCH in this subframe, and on last symbol of this subframe transmitting SRS.
It should be noted that PUCCH on the upstream components carrier wave (as CC1) and SRS multiplexing method and other upstream components carrier waves (as CC2) are irrelevant.
It should be noted that except that the LTE-Advanced system, said method of the present invention can also be applied to other system.
Signal transmission system structural representation when Figure 11 is a carrier aggregation of the present invention; As shown in figure 11, this system comprises UE and base station, is provided with in the base station: transmission parameter dispensing unit and transmission parameter transmitting element; Be provided with among the UE: transmission parameter receiving element and signal transmission unit; Wherein:
The transmission parameter dispensing unit is used to the PUCCH transmission parameter and/or the SRS transmission parameter of UE configuration one-component carrier wave or a plurality of component carriers, and it is outputed to the transmission parameter transmitting element;
The transmission parameter transmitting element is used for PUCCH transmission parameter and/or SRS transmission parameter are sent to UE on the descending sub frame of downlink component carrier or component carrier;
The transmission parameter receiving element is used to receive PUCCH transmission parameter and/or SRS transmission parameter, and it is outputed to signal transmission unit;
Signal transmission unit is used for respectively according to the transmission parameter of each component carrier component carrier transmission PUCCH and/or the SRS in correspondence.
Wherein, signal transmission unit can be known PUCCH transmission parameter and the SRS transmission parameter institute respective components carrier wave that carries on the descending sub frame of downlink component carrier or component carrier according to the signaling of rule that sets in advance or base station transmission.
Can comprise in the SRS transmission parameter of component carrier: be used to represent whether to allow on component carrier the top signaling of transmitting SRS and PUCCH simultaneously; Be 1 when signal transmission unit need allow the subframe transmitting SRS of transmitting SRS and form in the pairing component carrier of SRS transmission parameter, during the PUCCH of 1a or 1b:
If the top signaling on the component carrier allows to transmit PUCCH and SRS simultaneously on component carrier, then signal transmission unit uses brachymemma structural transmission PUCCH in this subframe of this component carrier, and on last symbol of this subframe transmitting SRS; If the top signaling on the component carrier does not allow to transmit simultaneously PUCCH and SRS on component carrier, then signal transmission unit uses conventional form transmission PUCCH in this subframe of this component carrier, and abandons SRS.
Be 2 when signal transmission unit need allow the subframe transmitting SRS of transmitting SRS and form in the pairing component carrier of SRS transmission parameter, during the PUCCH of 2a or 2b, this subframe transmission PUCCH of signal transmission unit on this component carrier then, and abandon SRS.

Claims (11)

1, the method for transmitting signals during a kind of carrier aggregation is characterized in that this method comprises:
The base station is the Physical Uplink Control Channel PUCCH transmission parameter and/or the measuring reference signals SRS transmission parameter of user equipment (UE) configuration one-component carrier wave or a plurality of component carriers, and above-mentioned transmission parameter is sent to UE;
UE transmits PUCCH and/or SRS according to the described transmission parameter of each component carrier at the component carrier of correspondence respectively.
2, the method for claim 1 is characterized in that,
Comprise in the SRS transmission parameter of described component carrier: be used to represent whether to allow on described component carrier the top signaling of transmitting SRS and PUCCH simultaneously;
Be 1 when UE need allow the subframe transmitting SRS of transmitting SRS and form in the pairing component carrier of described SRS transmission parameter, during the PUCCH of 1a or 1b:
If the top signaling on the described component carrier allows to transmit PUCCH and SRS simultaneously on described component carrier, then UE uses brachymemma structural transmission PUCCH in this subframe of this component carrier, and on last symbol of this subframe transmitting SRS; If the top signaling on the described component carrier does not allow to transmit simultaneously PUCCH and SRS on described component carrier, then UE uses conventional form transmission PUCCH in this subframe of this component carrier, and abandons SRS.
3, the method for claim 1 is characterized in that,
The base station sends to described UE with described PUCCH transmission parameter on the descending sub frame of downlink component carrier or component carrier;
Described UE is known the PUCCH transmission parameter institute respective components carrier wave that carries on the descending sub frame of described downlink component carrier or component carrier according to the signaling of rule that sets in advance or base station transmission.
4, the method for claim 1 is characterized in that,
The base station sends to described UE with described SRS transmission parameter on the descending sub frame of downlink component carrier or component carrier;
Described UE is known the SRS transmission parameter institute respective components carrier wave that carries on the descending sub frame of described downlink component carrier or component carrier according to the signaling of rule that sets in advance or base station transmission.
5, the method for claim 1 is characterized in that,
UE is transmitting SRS on last symbol of the subframe of component carrier only.
6, the method for claim 1 is characterized in that,
Be 2 when UE need allow the subframe transmitting SRS of transmitting SRS and form in component carrier, during the PUCCH of 2a or 2b, this subframe transmission PUCCH of UE on this component carrier then, and abandon SRS.
7, the signal transmission system during a kind of carrier aggregation, this system comprises UE and base station, it is characterized in that, is provided with in the described base station: transmission parameter dispensing unit and transmission parameter transmitting element; Be provided with among the described UE: transmission parameter receiving element and signal transmission unit; Wherein:
Described transmission parameter dispensing unit is used to the PUCCH transmission parameter and/or the SRS transmission parameter of described UE configuration one-component carrier wave or a plurality of component carriers, and it is outputed to described transmission parameter transmitting element;
Described transmission parameter transmitting element is used for described PUCCH transmission parameter and/or SRS transmission parameter are sent to described UE;
Described transmission parameter receiving element is used to receive described PUCCH transmission parameter and/or SRS transmission parameter, and it is outputed to described signal transmission unit;
Described signal transmission unit is used for respectively according to the described transmission parameter of each component carrier component carrier transmission PUCCH and/or the SRS in correspondence.
8, system as claimed in claim 7 is characterized in that,
Comprise in the SRS transmission parameter of described component carrier: be used to represent whether to allow on described component carrier the top signaling of transmitting SRS and PUCCH simultaneously;
Be 1 when described signal transmission unit need allow the subframe transmitting SRS of transmitting SRS and form in the pairing component carrier of described SRS transmission parameter, during the PUCCH of 1a or 1b:
If the top signaling on the described component carrier allows to transmit simultaneously PUCCH and SRS on described component carrier, then described signal transmission unit uses brachymemma structural transmission PUCCH in this subframe of this component carrier, and on last symbol of this subframe transmitting SRS; If the top signaling on the described component carrier does not allow to transmit simultaneously PUCCH and SRS on described component carrier, then described signal transmission unit uses conventional form transmission PUCCH in this subframe of this component carrier, and abandons SRS.
9, system as claimed in claim 7 is characterized in that,
Be 2 when described signal transmission unit need allow the subframe transmitting SRS of transmitting SRS and form in the pairing component carrier of described SRS transmission parameter, during the PUCCH of 2a or 2b:
This subframe transmission PUCCH of described signal transmission unit on this component carrier, and abandon SRS.
10, system as claimed in claim 7 is characterized in that,
Described transmission parameter transmitting element sends to described UE with described PUCCH transmission parameter on the descending sub frame of downlink component carrier or component carrier;
Described signal transmission unit is known the PUCCH transmission parameter institute respective components carrier wave that carries on the descending sub frame of described downlink component carrier or component carrier according to the signaling of rule that sets in advance or base station transmission.
11, system as claimed in claim 7 is characterized in that,
Described transmission parameter transmitting element sends to described UE with described SRS transmission parameter on the descending sub frame of downlink component carrier or component carrier;
Described signal transmission unit is known the SRS transmission parameter institute respective components carrier wave that carries on the descending sub frame of described downlink component carrier or component carrier according to the signaling of rule that sets in advance or base station transmission.
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CN110225596B (en) * 2019-05-29 2022-05-24 成都中科微信息技术研究院有限公司 Scheduling method and system combining PUCCH period
CN110225596A (en) * 2019-05-29 2019-09-10 成都中科微信息技术研究院有限公司 A kind of dispatching method and system in combination PUCCH period

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