CN103139124B - A kind of information processing method, base station and LTE system - Google Patents
A kind of information processing method, base station and LTE system Download PDFInfo
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- CN103139124B CN103139124B CN201110389374.3A CN201110389374A CN103139124B CN 103139124 B CN103139124 B CN 103139124B CN 201110389374 A CN201110389374 A CN 201110389374A CN 103139124 B CN103139124 B CN 103139124B
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Abstract
The embodiment of the invention discloses information processing method and base station, LTE system, for when not carrying out deinterleaving to order designated symbol, obtaining rank indication information.Embodiment of the present invention method comprises: determine the numbering carrying the orthogonal frequency division multiplex OFDM symbol of order designated symbol in the subframe that the subscriber equipment received sends; According to the order of numbering, from the OFDM symbol of numbering correspondence, order designated symbol is separated successively, and calculate the sequence number of the order designated symbol separated; When not carrying out deinterleaving to order designated symbol, the sequence number according to order designated symbol carries out descrambling to order designated symbol; Rank indication information is obtained according to the order designated symbol after descrambling.Also disclose base station and LTE system in the embodiment of the present invention, can have and effectively avoid deinterleaving to take a large amount of internal memories and bus resource, save system resource.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of information processing method, base station and LTE system.
Background technology
Long Term Evolution (LTE, LongTermEvolution) system is the essential planning of third generation partnership, and multiple-input and multiple-output (MIMO, Multiple-InputMultiple-Out-put) technology is the topmost means that LTE system improves system transfers rate, effectively can increase power system capacity, improve transmission performance, and can merge mutually with other physical-layer techniques well, determine that the basic configuration of mimo antenna number is descending 2*2 at present, 4*4, up 1*2, in the system using MIMO technology, pre-coding matrix index (PMI, PrecodingMatrixIndex) information and order indicate (RI, RankIndicator) information is the important feedback informations of two kinds of MIMO.At the subscriber equipment (UE of LTE system, UserEquipment) side, UE will carry out channel estimating to descending mimo channel, obtain the order of channel matrix, be called that order indicates, order instruction for reflecting that present channel can allow the number of data streams of downlink transfer, UE by order indication feedback to base station, the number of the data flow can transmitted with informing base station.
In the prior art, the step that base station receives rank indication information is contrary with the step of the sending method of user equipment side rank indication information, namely needs the steps such as experience separation, deinterleaving, descrambling, demodulation to obtain rank indication information.
Inventor finds under study for action, obtains in the method for rank indication information, there is following defect in existing base station:
After order designated symbol is separated, deinterleaving must be carried out to the order designated symbol separated, and order designated symbol need be arranged according to natural order, recover putting in order of the order designated symbol before user equipment side interweaves.But, in deinterleaving process, order designated symbol is sorted and will take a large amount of internal memories, and if by the order designated symbol write shared drive after deinterleaving, also will the bus resource of system be taken.
Summary of the invention
Embodiments provide a kind of information processing method and base station, LTE system, in base station side, base station obtains rank indication information from the subframe received, and can have and effectively avoid deinterleaving to take a large amount of internal memories and bus resource, saves system resource.
Information processing method in the embodiment of the present invention comprises: determine the numbering carrying the orthogonal frequency division multiplex OFDM symbol of order designated symbol in the subframe that the subscriber equipment received sends, the corresponding scrambler sequence of each OFDM symbol; According to the order of numbering, from the OFDM symbol of numbering correspondence, order designated symbol is separated successively, and calculate the sequence number of the order designated symbol separated, the order designated symbol separated from same OFDM symbol has identical scrambler sequence, there is corresponding relation between the sequence number of order designated symbol and scrambler sequence; When not carrying out deinterleaving to order designated symbol, the sequence number according to order designated symbol carries out descrambling to order designated symbol; Rank indication information is obtained according to the order designated symbol after descrambling.
Base station in the embodiment of the present invention comprises: numbering determining unit, for determining the numbering carrying the orthogonal frequency division multiplex OFDM symbol of order designated symbol in the subframe that the subscriber equipment received sends, the corresponding scrambler sequence of each OFDM symbol; Separate calculation unit, for the order according to numbering, from the OFDM symbol of numbering correspondence, order designated symbol is separated successively, and calculate the sequence number of the order designated symbol separated, the order designated symbol separated from same OFDM symbol has identical scrambler sequence, there is corresponding relation between the sequence number of order designated symbol and scrambler sequence; Descrambling unit, for when not carrying out deinterleaving to order designated symbol, the sequence number according to order designated symbol carries out descrambling to order designated symbol; Processing unit, for obtaining rank indication information according to the order designated symbol after descrambling.
LTE system in the embodiment of the present invention comprises: base station, subscriber equipment; The subframe of the carrying order designated symbol that base station receives user equipment sends, obtains rank indication information from subframe.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:
In embodiments of the present invention, base station is by according to the OFDM (OFDM in the subframe received, OrthogonalFrequencyDivisionMultiplexing) numbering of symbol, order designated symbol in OFDM symbol is separated, and calculate the sequence number of the order designated symbol separated, when not carrying out deinterleaving to order designated symbol, sequence number according to order designated symbol carries out descrambling to order designated symbol, rank indication information is obtained according to the order designated symbol after descrambling, can effectively avoid deinterleaving committed memory and bus resource, save system resource.
Accompanying drawing explanation
Fig. 1 is a schematic diagram of a kind of information processing method in the embodiment of the present invention;
Fig. 2 is the structural representation of order sign map in a subframe in the embodiment of the present invention;
Fig. 3 is another schematic diagram of a kind of information processing method in the embodiment of the present invention;
Fig. 4 is a schematic diagram of base station in the embodiment of the present invention;
Fig. 5 is another schematic diagram of base station in the embodiment of the present invention;
Fig. 6 is a schematic diagram of LTE system in the embodiment of the present invention.
Embodiment
Embodiments provide a kind of information processing method and base station, LTE system, for base station when not carrying out deinterleaving, from the subframe received, obtain the rank indication information of subscriber equipment feedback, avoid deinterleaving to take a large amount of internal memory and bus resource, save system resource.
Refer to Fig. 1, be a kind of in embodiment of the present invention embodiment of information processing method, comprise:
101, the numbering carrying the OFDM symbol of order designated symbol in the subframe that the subscriber equipment received sends is determined;
In LTE system, the channel quality of subscriber equipment to this user place channel is measured, and the result of channel quality measurement is carried in subframe feeds back to base station, wherein, comprise rank indication information in the result of channel quality measurement, in addition, also can comprise PMI, the information such as channel quality instruction (CQI, ChannelQualityIndicator).
In embodiments of the present invention, subscriber equipment in units of subframe transmission of channel quality information to base station.In LTE system, frame structure is divided into radio frames, field, subframe, time slot and symbol four grades, and the length of one of them radio frames is 10ms, 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.Comprise several Resource Units in a subframe, Resource Unit is a subcarrier in an OFDM symbol.Please refer to Fig. 2, for the structural representation that order designated symbol in a subframe in the embodiment of the present invention maps, it should be noted that, 2 frequency pilot signs and 12 non-pilot symbols are comprised in each subframe, non-pilot symbol is only identified in embodiment shown in Fig. 2,0-11 shown in transverse axis is the numbering of non-pilot OFDM symbol, and vertical pivot is the subcarrier of system assignment, and wherein 0 ~ N-1 is the numbering of subcarrier.
It should be noted that, in embodiments of the present invention, in user equipment side, after subscriber equipment measurement obtains rank indication information, rank indication information is encoded, rank indication information before coding is bit, and the rank indication information after coding can use order designated symbol sequence identifier, and rank indication information can be expressed as: S
0, S
1, S
2..., S
q-1, wherein Q is the number of the order designated symbol that subscriber equipment will send.
It should be noted that, in LTE system, the order designated symbol comprised in rank indication information is mapped in subframe by subscriber equipment by the rule according to system intialization, and pre-set when carrying the numbering of the OFDM symbol of order designated symbol in subframe.Such as, in the subframe shown in Fig. 2 in order designated symbol mapping structure figure, be numbered Isosorbide-5-Nitrae, 7, in the OFDM symbol of 10, carry order designated symbol, wherein, from the subcarrier that numbering is maximum, by S
0be placed on subcarrier number be N-1 and OFDM symbol be numbered 1 position, by S
1be placed on subcarrier number and be N-1 and OFDM symbol is numbered 10, by S
2be placed on subcarrier number be N-1 and OFDM be numbered 7 position, by S
3be placed on subcarrier number be N-1 and OFDM symbol be numbered 4 position, then to being numbered the subcarrier of N-2, place order designated symbol according to above-mentioned identical mode.
In embodiments of the present invention, the numbering of the OFDM symbol carrying order designated symbol in the subframe received can be determined after receiving the subframe of subscriber equipment feedback in base station.
It should be noted that, in embodiments of the present invention, in user equipment side, subscriber equipment is when feeding back rank indication information, if this subscriber equipment does not need to send data, rank indication information will transmission in row control channel (PUCCH, PhysicalUplinkControlCHannel) physically, therefore, base station can receive subframe from PUCCH; If subscriber equipment needs to send data, rank indication information will transmission in row shared channel (PUSCH, PhysicalUplinksharedChannel) physically, and therefore, base station can receive subframe from PUSCH.
102, according to the order of numbering, from the OFDM symbol of numbering correspondence, order designated symbol is separated successively, and calculate the sequence number of the order designated symbol separated;
In embodiments of the present invention, after base station obtains the numbering of the OFDM symbol at order designated symbol place, by the order according to numbering, from the OFDM symbol of numbering correspondence, order designated symbol is separated successively, and calculate the sequence number of the order designated symbol separated.Such as, when being separated the order designated symbol be numbered in the OFDM symbol of 1, when obtaining an order designated symbol, then calculate the sequence number of this order designated symbol immediately, determine that its sequence number is 0, wherein, the separation of order designated symbol and computational process can be carried out simultaneously, and are separate.
103, when not carrying out deinterleaving to order designated symbol, the sequence number according to order designated symbol carries out descrambling to order designated symbol;
In embodiments of the present invention, base station is after being separated order designated symbol and determine the sequence number of the order designated symbol be separated, and by when not carrying out deinterleaving to order designated symbol, the sequence number according to order designated symbol carries out descrambling to order designated symbol.
104, rank indication information is obtained according to the order designated symbol after descrambling.
In embodiments of the present invention, base station, after carrying out descrambling to order designated symbol, obtains rank indication information by according to the order designated symbol after descrambling.
In embodiments of the present invention, by when not carrying out deinterleaving to order designated symbol, sequence number according to order designated symbol carries out descrambling to order designated symbol, effectively can solve the problem that deinterleaving occupies a large amount of internal memory and bus resource, saves system resource.
Technical scheme for a better understanding of the present invention, refers to Fig. 3, is a kind of in embodiment of the present invention embodiment of information processing method, comprises:
301, the numbering carrying the OFDM symbol of order designated symbol in the subframe that the subscriber equipment received sends is determined;
In embodiments of the present invention, the numbering of the OFDM symbol carrying order designated symbol in the subframe received can be determined after receiving the subframe of subscriber equipment transmission in base station according to the rule of system intialization.Such as, system can pre-set order designated symbol and be arranged on being numbered in the OFDM symbol of 1,4,7,10 of subframe.
302, according to the order of numbering, from OFDM symbol corresponding to numbering, order designated symbol is separated successively, and detect currently whether there is the order designated symbol separated in real time, if so, then calculate the sequence number of the order designated symbol separated;
In embodiments of the present invention, base station is by the order of the numbering according to OFDM symbol, from the OFDM symbol of numbering correspondence, order designated symbol is separated successively, and calculate the sequence number of the order designated symbol separated, be specially: order designated symbol, by the order according to numbering, is separated by base station successively from OFDM symbol corresponding to numbering, and detect currently whether there is the order designated symbol separated in real time, if so, the sequence number of the order designated symbol separated then is calculated.Refer to Fig. 2, if order designated symbol is carried on be numbered 1,4,7, in the OFDM symbol of 10, then order designated symbol will be isolated from these OFDM symbol continuously successively in base station, namely from the OFDM symbol being numbered 1, be separated order designated symbol, and in the process of carrying out the separation of order designated symbol, whether real-time detection exists the order designated symbol separated, if so, the sequence number of the order designated symbol separated then is calculated.
It should be noted that, rank indication information and other ascending control information in subframe, can be carried, in the embodiment shown in Figure 2, be only described to carry rank indication information in subframe.
303, when not carrying out deinterleaving to order designated symbol, the sequence number according to order designated symbol carries out descrambling to order designated symbol;
It should be noted that, in LTE system, system is by the descrambling of preset base station rule, and the descrambling procedure of base station is the inverse process of the scrambling processes of subscriber equipment, in embodiments of the present invention, each OFDM symbol correspond to a scrambler sequence, in user equipment side, subscriber equipment utilizes scrambler sequence to carry out scrambling to order designated symbol, and in base station side, base station utilizes scrambler sequence to carry out descrambling to order designated symbol.In embodiments of the present invention, the order designated symbol separated from same OFDM symbol has identical scrambler sequence, also corresponding relation is there is between the sequence number of order designated symbol and scrambler sequence, therefore, base station can when not carrying out deinterleaving to order designated symbol, determine the scrambler sequence that the sequence number of order designated symbol is corresponding, utilize the order designated symbol of this scrambler sequence to correspondence to carry out descrambling.
304, according to rank indication information at the order of modulation of user equipment side and bit number, determine the demodulation mode of the order designated symbol after descrambling;
305, according to demodulation mode, demodulation is carried out to order designated symbol, obtain the rank indication information that subframe is carried.
In embodiments of the present invention, base station by according to rank indication information at the order of modulation of user equipment side and bit number, determine the demodulation mode of the order designated symbol after descrambling, and by according to the demodulation mode determined, demodulation is carried out to order designated symbol, obtain the rank indication information that subframe is carried.
It should be noted that, the demodulating process of base station is the inverse process of the modulated process of subscriber equipment.In embodiments of the present invention, user equipment side, if the bit number of rank indication information is 1 bit, then the order of modulation according to rank indication information is determined concrete modulation system by subscriber equipment in 1 bits of encoded rule list, refer to table 1, when the bit number that table 1 is rank indication information is 1 bit, the required 1 bits of encoded rule list used of subscriber equipment, wherein Q
mfor order of modulation, referring to table 2, is the corresponding relation between order of modulation and modulation system.
Table 1
| Q m | Modulation system |
| 2 | QPSK |
| 4 | 16QAM |
| 6 | 64QAM |
Table 2
In table 2, QPSK represents Quadrature Phase Shift Keying (QuadraturePhaseShiftKeying), and QAM represents orthogonal amplitude keying (QuadratureAmplitudeModulation).
In embodiments of the present invention, in user equipment side, if the bit number of rank indication information is 2 bits, then the order of modulation according to rank indication information is determined concrete modulation system by subscriber equipment in 2 bits of encoded rule tables, referring to table 3, is 2 bits of encoded rule list, wherein Q in the embodiment of the present invention
mfor the order of modulation of subscriber equipment, and the corresponding relation between order of modulation and modulation system please refer to table 2.
Table 3
Bits of encoded is encoded to, namely in form
it is all a bit (0 or 1).
Following explanation is done to the variable in form:
Be explained as follows the implication of x, y: x and y is placeholder, represent during coding that there is a bit this position, can identify x and y during scrambling, scrambling rule is: if during x, after scrambling, and the position of x is bit 1; If during y, after scrambling, the position of y is the value of its previous bit.
It should be noted that, in embodiments of the present invention, user equipment side is after formulating the coding rule and order of modulation used order designated symbol, user equipment side, by informing base station, makes base station can obtain rank indication information according to the inverse process of the mode of user equipment side subscriber equipment process rank indication information.
In embodiments of the present invention, base station by according to rank indication information at the order of modulation of user equipment side and bit number, determine the demodulation mode of the order designated symbol after descrambling, and demodulation will be carried out according to demodulation mode to order designated symbol, obtain the rank indication information that subframe is carried, make when not carrying out deinterleaving to order designated symbol, demodulation is carried out to order designated symbol and also can obtain rank indication information, specific description is not carried out to order designated symbol the principle that deinterleaving also can obtain rank indication information below.
When the bit number of rank indication information is 1 bit, subscriber equipment is modulated order designated symbol according to 1 bits of encoded rule list and preset order of modulation, and modulation after order designated symbol between be separate, therefore, in such cases, carrying out not needing the order from small to large of order designated symbol by sequence number to sort when demodulation obtains rank indication information to order designated symbol in base station, does not namely need the process of carrying out deinterleaving; When the bit number of rank indication information is 2 bit, known according to 2 bits of encoded rule lists, every three symbols are one group, and wherein, on three symbols in a group, each symbol carry information (is equally
), only owing to modulating, S
0~ S
2position on planisphere different (being mapped to different quadrants).Suppose that the symbol sebolic addressing to be demodulated inputted is S
0, S
1, S
2, S
3, S
4, S
5, during demodulation, S
0~ S
2one group, S
3~ S
5one group.On the surface, the demodulation process of each symbol is relevant with its notation index, order designated symbol must be needed by sequence number order arrangement from small to large, be actually passed through analysis, and demodulation is just to three Symbol processing differences in a group.To the symbol that three deliverys come to the same thing, its demodulation process is exactly identical.Therefore, as long as know notation index, just demodulation can be completed.Do not need order designated symbol to sort by sequence number order from small to large, namely do not need the process carrying out deinterleaving.
In embodiments of the present invention, order designated symbol is isolated from the subframe received, and carry out the process of the sequence number determining order designated symbol simultaneously, make the sequence number not needing to determine its correspondence again after all order designated symbols are separated, effectively can shorten order designated symbol be separated and determine the time that sequence number consumes, simultaneously, the process such as descrambling, demodulation is carried out after determining order designated symbol, do not need the process performing deinterleaving, deinterleaving process effectively can be avoided to take a large amount of internal memories and bus resource, save system resource.
Refer to Fig. 4, be a kind of in embodiment of the present invention embodiment of base station, comprise:
Numbering determining unit 401, for determining the numbering carrying the orthogonal frequency division multiplex OFDM symbol of order designated symbol in the subframe that the subscriber equipment received sends;
Separate calculation unit 402, for the order according to described numbering, separates order designated symbol successively from the OFDM symbol of described numbering correspondence, and the sequence number of the order designated symbol separated described in calculating;
Descrambling unit 403, for when not carrying out deinterleaving to described order designated symbol, the sequence number according to described order designated symbol carries out descrambling to described order designated symbol;
Processing unit 404, for obtaining rank indication information according to the order designated symbol after descrambling.
In embodiments of the present invention, numbering determining unit 401 in base station determines the numbering carrying the OFDM symbol of order designated symbol in the subframe that the subscriber equipment received sends, and by the order of separate calculation unit 402 according to numbering, from the OFDM symbol of numbering correspondence, order designated symbol is separated successively, and calculate the sequence number of the order designated symbol separated, again by Descrambling unit 403 when not carrying out deinterleaving to described order designated symbol, sequence number according to described order designated symbol carries out descrambling to order designated symbol, finally obtain rank indication information by processing unit 404 according to the order designated symbol after descrambling.
In embodiments of the present invention, by when not carrying out deinterleaving to order designated symbol, sequence number according to order designated symbol carries out descrambling to order designated symbol, effectively can solve the problem that deinterleaving occupies a large amount of internal memory and bus resource, saves system resource.
Technical scheme for a better understanding of the present invention, refers to Fig. 5, is the embodiment of base station in the embodiment of the present invention, comprises:
Numbering determining unit 401 in embodiment illustrated in fig. 4, separate calculation unit 402, Descrambling unit 403, processing unit 404, and identical with the content of description embodiment illustrated in fig. 4, repeat no more herein.
Wherein, processing unit 404 comprises:
Determine subelement 501, for according to rank indication information at the order of modulation of described user equipment side and bit number, determine the demodulation mode of the order designated symbol after described descrambling;
Demodulation subelement 502, for carrying out demodulation according to demodulation mode to order designated symbol, obtains the rank indication information that described subframe is carried.
In embodiments of the present invention, if rank indication information is 1 bit at the bit number of user equipment side, then determine that subelement for determining the demodulation mode corresponding with order of modulation in 1 bits of encoded rule list; And/or, if rank indication information is 2 bits at the bit number of user equipment side, then determine that subelement for determining the demodulation mode corresponding with order of modulation in 2 bits of encoded rule lists.
In addition, the base station in the embodiment of the present invention can also comprise:
Receiving element 503, receives subframe in Uplink Control Channel PUCCH physically, or receives subframe in row shared channel PUSCH physically.
In embodiments of the present invention, receiving element 503 in base station receives subframe in Uplink Control Channel PUCCH physically, or receive subframe in row shared channel PUSCH physically, the numbering carrying the OFDM symbol of order designated symbol in the subframe received is determined again by numbering determining unit 401, and by the order of separate calculation unit 402 according to numbering, from the OFDM symbol of numbering correspondence, order designated symbol is separated successively, and calculate the sequence number of the order designated symbol separated, again by Descrambling unit 403 when not carrying out deinterleaving to described order designated symbol, sequence number according to order designated symbol carries out descrambling to order designated symbol, finally by processing unit 404 really stator unit 501 according to rank indication information at the order of modulation of described user equipment side and bit number, determine the demodulation mode of the order designated symbol after described descrambling, be specially: if rank indication information is 1 bit at the bit number of user equipment side, then determine that subelement 501 determines the demodulation mode corresponding with order of modulation in 1 bits of encoded rule list, and/or, if rank indication information is 2 bits at the bit number of user equipment side, then determine that subelement 501 determines the demodulation mode corresponding with order of modulation in 2 bits of encoded rule lists, demodulation subelement 502 carries out demodulation according to this demodulation mode to order designated symbol, obtains the order designated symbol carried in subframe.
In embodiments of the present invention, order designated symbol is isolated from the subframe received, and carry out the process of the sequence number determining order designated symbol simultaneously, make the sequence number not needing to determine its correspondence again after all order designated symbols are separated, effectively can shorten order designated symbol be separated and determine the time that sequence number consumes, simultaneously, the process such as descrambling, demodulation is carried out after determining order designated symbol, do not need the process performing deinterleaving, deinterleaving process effectively can be avoided to take a large amount of internal memories and bus resource, save system resource.
It should be noted that, in embodiments of the present invention, the base station shown in Fig. 4 and Fig. 5 can be specially the baseband processing portion in base station.
Refer to Fig. 6, be an embodiment of LTE system in the embodiment of the present invention, comprise:
Base station 601 as described in Fig. 4 or Fig. 5, subscriber equipment 602;
Base station 601 receives the subframe of the carrying order designated symbol that subscriber equipment 602 sends, from subframe, obtain rank indication information.
Wherein, base station 601 receives subframe in Uplink Control Channel PUCCH physically, or receives subframe in row shared channel PUSCH physically.
One of ordinary skill in the art will appreciate that all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
Above a kind of information processing method provided by the present invention and base station, LTE system are described in detail, for one of ordinary skill in the art, according to the thought of the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. an information processing method, is characterized in that, comprising:
Determine the numbering carrying the orthogonal frequency division multiplex OFDM symbol of order designated symbol in the subframe that the subscriber equipment received sends, the corresponding scrambler sequence of each OFDM symbol;
According to the order of described numbering, from the OFDM symbol of described numbering correspondence, order designated symbol is separated successively, and calculate the sequence number of the order designated symbol separated, the order designated symbol separated from same OFDM symbol has identical scrambler sequence, there is corresponding relation between the sequence number of order designated symbol and scrambler sequence;
When not carrying out deinterleaving to described order designated symbol, the sequence number according to described order designated symbol carries out descrambling to described order designated symbol;
Rank indication information is obtained according to the order designated symbol after descrambling.
2. method according to claim 1, is characterized in that, the described order according to described numbering, is separated by order designated symbol successively, and calculates the sequence number of the order designated symbol separated, comprising from the OFDM symbol of described numbering correspondence:
According to the order of described numbering, from the OFDM symbol of described numbering correspondence, order designated symbol is separated successively, and detect in real time currently whether there is the order designated symbol separated, the sequence number of the order designated symbol separated described in if so, then calculating.
3. method according to claim 1, is characterized in that, the described order designated symbol according to after descrambling obtains rank indication information and comprises:
According to rank indication information at the order of modulation of described user equipment side and bit number, determine the demodulation mode of the order designated symbol after described descrambling;
According to described demodulation mode, demodulation is carried out to described order designated symbol, obtain the rank indication information carried in described subframe.
4. method according to claim 3, is characterized in that, described according to rank indication information at the order of modulation of described user equipment side and bit number, determine that the demodulation mode of the order designated symbol after described descrambling comprises:
If rank indication information is 1 bit at the bit number of described user equipment side, then in 1 bits of encoded rule list, determine the demodulation mode corresponding with described order of modulation; And/or,
If rank indication information is 2 bits at the bit number of described user equipment side, then in 2 bits of encoded rule lists, determine the demodulation mode corresponding with described order of modulation.
5. the method according to any one of Claims 1-4, is characterized in that, also comprises before carrying the numbering of the OFDM symbol of order designated symbol in the subframe that the described subscriber equipment determining to receive sends:
Described subframe is received physically in Uplink Control Channel PUCCH; Or,
Described subframe is received physically in row shared channel PUSCH.
6. a base station, is characterized in that, comprising:
Numbering determining unit, for determining the numbering carrying the orthogonal frequency division multiplex OFDM symbol of order designated symbol in the subframe that the subscriber equipment received sends, the corresponding scrambler sequence of each OFDM symbol;
Separate calculation unit, for the order according to described numbering, from the OFDM symbol of described numbering correspondence, order designated symbol is separated successively, and the sequence number of the order designated symbol separated described in calculating, the order designated symbol separated from same OFDM symbol has identical scrambler sequence, there is corresponding relation between the sequence number of order designated symbol and scrambler sequence;
Descrambling unit, for when not carrying out deinterleaving to described order designated symbol, the sequence number according to described order designated symbol carries out descrambling to described order designated symbol;
Processing unit, for obtaining rank indication information according to the order designated symbol after descrambling.
7. base station according to claim 6, is characterized in that, described processing unit comprises:
Determine subelement, for according to rank indication information at the order of modulation of described user equipment side and bit number, determine the demodulation mode of the order designated symbol after described descrambling;
Demodulation subelement, for carrying out demodulation according to described demodulation mode to described order designated symbol, obtains the rank indication information that described subframe is carried.
8. base station according to claim 7, is characterized in that,
If rank indication information is 1 bit at the bit number of described user equipment side, then determine that subelement for determining the demodulation mode corresponding with described order of modulation in 1 bits of encoded rule list; And/or,
If rank indication information is 2 bits at the bit number of described user equipment side, then determine that subelement for determining the demodulation mode corresponding with described order of modulation in 2 bits of encoded rule lists.
9. the base station according to any one of claim 6 to 8, is characterized in that, described base station also comprises:
Receiving element, receives described subframe in Uplink Control Channel PUCCH physically, or receives described subframe in row shared channel PUSCH physically.
10. a Long Term Evolution LTE system, is characterized in that, comprising:
Base station as described in any one of claim 6 to 9, subscriber equipment;
Described base station receives the subframe of the carrying order designated symbol that described subscriber equipment sends, from described subframe, obtain rank indication information.
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| CN109391293B (en) * | 2017-08-11 | 2022-01-14 | 华为技术有限公司 | Signal scrambling and descrambling method and device |
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| CN101330307A (en) * | 2008-07-24 | 2008-12-24 | 中兴通讯股份有限公司 | Method and apparatus for transmitting rank indication information, receiving method and device thereof |
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