CN103095637A - Demodulation reference signal transmission method and system - Google Patents
Demodulation reference signal transmission method and system Download PDFInfo
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- CN103095637A CN103095637A CN2012105515240A CN201210551524A CN103095637A CN 103095637 A CN103095637 A CN 103095637A CN 2012105515240 A CN2012105515240 A CN 2012105515240A CN 201210551524 A CN201210551524 A CN 201210551524A CN 103095637 A CN103095637 A CN 103095637A
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Abstract
The invention discloses a demodulation reference signal transmission method and a system. The method includes: judging whether a physical resource unit which is detected and pre-set by a base station before the base station sends demodulation reference signals is occupied by master synchronization signals or secondary synchronization signals, if the physical resource unit is not occupied, the demodulation reference signals is mapped to the physical resource unit, if the physical resource unit is occupied, the mapping position of the demodulation reference signals is moved an orthogonal frequency division multiplexing (OFDM) character towards the left or towards the right according to lengths of a frame structure and a cyclic prefix, and sending the mapped reference signals out; a wireless terminal during reception presets the position of the physical resource unit of the demodulation reference signals, if the position is not the demodulation reference signals actually, the wireless terminal receives according to the position of the demodulation reference signals which are moved one OFDM character towards the left or towards the right according to lengths of the frame structure and the cyclic prefix. The system comprises a base station device and a wireless terminal device. The demodulation reference signal transmission method and the system avoid collision of the master synchronization signals or the secondary synchronization signals and the demodulation reference signals during transmission and at the same time ensure that demodulation of a physical shared channel is not influenced and data speed is not lowered.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of in the LTE-A network transmission method and the corresponding system of downlink demodulation reference signal physical mappings.
Background technology
LTE (Long Term Evolution) is the evolution of 3-G (Generation Three mobile communication system), and after R-10, the LTE of version is also referred to as LTE-Advanced (LTE-A).The LTE-A system has adopted carrier aggregation technology, 5 carrier aggregation at the most together, can be formed larger transmission bandwidth, thereby higher data rate and throughput is provided.In the standardisation process of 3gpp to scrappy carrier aggregation, decision is wanted the carrier wave redesign of polymerization with these, reduced the transmission of cell special reference (CRS), at present, CRS on the carrier type of this redesign transmission only has been reduced in the R0 port transmission, and in time at interval of the 5ms transmission primaries.And in the carrier wave of redesign, the demodulation of Physical Downlink Shared Channel (PDSCH) is born by the descending demodulated reference signal (DM-RS) of new introducing.The characteristics of DM-RS signal are that to be evenly scattered in the PDSCH channel inner, like this transmission of DM-RS and main synchronously, auxiliary synchronous signals (PSS/SSS) might clash.
The signal of the new DM-RS that introduces and PSS/SSS generation conflict in the physical mappings transmission as shown in Figure 1.Drawn certain wireless resource block (RB) that is mapped with the PSS/SSS signal in figure, the digital 0-11 of the longitudinal axis represents the sequence number of this RB sub-carriers.The sequence number of this RB kind of transverse axis numeral OFDM symbol.The PSS/SSS symbol is on OFDM symbol 5 and 6, and all subcarriers of this RB that plies in the centre on frequency domain, and the new DM-RS symbol of introducing also occupies OFDM symbol 5 and 6 on time domain, be in subcarrier 0,1 on frequency domain are on 5,6,10,11.It is to be noted, only drawn certain wireless resource block of center (RB) of downlink bandwidth in figure, PSS/SSS has occupied the center 6RB of downlink bandwidth in actual LTE-A system, therefore only may occur on 6 RB at this center with conflicting of DM-RS, remaining RB can not clash for bandwidth.It may be noted that on the other hand, illustrated in Figure 1 is for the FDD frame structure, equally similar conflict can occur for the tdd frame structure, and the time slot that just occurs is different.
For above problem, the existing solution that proposes is not transmit DM-RS on the center 6RB that PSS/SSS and DM-RS clash.Thereby these 6 RB are upper can't carry out because of reference signal the demodulation that channel estimating has affected shared channel yet will cause like this, has lowered transmission data rate.
Deficiency based on the problems referred to above and existing solution, the present invention proposes a kind of by judging whether DM-RS symbol RE position conflicts with PSS/SSS symbol RE position, and with the displacement of DM-RS symbol, thereby namely avoid PSS/SSS and DM-RS transmission collision not to reduce again method and the corresponding system of shared channel data rate.
Summary of the invention
The objective of the invention is to clash during in physical mappings when the new demodulated reference signal (DM-RS) of introducing and master sync signal or auxiliary synchronous signal (PSS/SSS), then transmit between base station and mobile terminal adjustment DM-RS sign map position.In order to reach this purpose, the present invention includes following methods:
Step 101: the positional information of master sync signal and auxiliary synchronous signals (PSS/SSS) physical mappings is calculated in the base station, and simultaneously, the positional information of modulation reference signals (DM-RS) physical mappings is calculated in the base station.
The position of the position of PSS/SSS physical mappings and DM-RS physical mappings is by the time slot sequence number at their places, OFDM symbol sequence number, and the subcarrier sequence number determines.These three information from base station according to the length of cell id, Cyclic Prefix through calculating accordingly.
Step 102: whether the mapping position that presets that the base station judges each DM-RS symbol successively and the mapping position of PSS/SSS symbol identical (producing conflict), for the DM-RS symbol that does not conflict, keep its original physical mappings invariant position, if conflict utilizes shifting function in step 3 to change its original physical mappings position.
Step 103: for different cell types, the position of the residing OFDM symbol of DM-RS symbol of circulating prefix-length and conflict utilizes different shifting functions, with the conflict the DM-RS sign map to other physical location, comprise particularly:
For the conventional CP of FDD frame structure, preset the DM-RS signal that is mapped on the OFDM# 5 symbol and be moved to the left a position to OFDM# 4, preset the DM-RS signal that is mapped on OFDM# 6 and move right on the OFDM# 0 of next time slot; Perhaps,
For FDD frame structure extension CP, preset the DM-RS signal that is mapped on the OFDM# 4 symbol and be moved to the left a position to OFDM# 3, preset the DM-RS signal that is mapped on OFDM# 5 and move right on the OFDM# 0 of next time slot; Perhaps,
For the conventional CP of tdd frame structure, preset the DM-RS signal that is mapped on the OFDM# 6 symbol OFDM# 0 to next time slot that moves to right; Perhaps,
For tdd frame structure extension CP, preset the DM-RS signal that is mapped on the OFDM# 5 symbol OFDM# 0 to next time slot that moves to right.
Step 104: mobile terminal is at predefined physical resource unit position probing demodulated reference signal, if this physical resource unit is the position that clashes with master sync signal or auxiliary synchronous signals, reception is detected in a mobile OFDM position.Comprise particularly:
For 6, the center wireless resource block on the OFDM# 6 of the time slot # 1 of the conventional CP of tdd frame structure and time slot # 11, preset and be mapped to will the move right upper DM-RS of reception of OFDM# 0 of next time slot of this regional DM-RS signal location;
For 6, the center wireless resource block on the OFDM# 5 of the time slot # 1 of tdd frame structure extension CP and time slot # 11, preset and be mapped to will the move right upper DM-RS of reception of OFDM# 0 of next time slot of this regional DM-RS signal location;
Step 105: wireless terminal is estimated channel according to the demodulated reference signal that receives, and then the business datum on Physical Shared Channel is carried out demodulation.
Demodulated reference signal can not produce with master sync signal, auxiliary synchronous signals or other physical signalling by the mapping position after being shifted and conflict, simultaneously due to the position of only having moved an OFDM symbol, demodulated reference signal after movement still is evenly distributed in Physical Shared Channel (PDSCH) approx, be conducive to the best performance of channel estimation method performance, thereby guaranteed the demodulation performance of business datum unaffectedly, kept high data rate.
The transmission system of a kind of demodulated reference signal provided by the present invention includes, base station equipment and terminal equipment.Wherein, base station equipment includes synchronizing signal physical mappings storage module, demodulated reference signal generation module, conflict judge module, physical mappings mobile module and physical mappings and sending module; Terminal equipment includes demodulated reference signal physical resource unit location finding module and demodulated reference signal receiver module.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is that demodulated reference signal produces with master sync signal/auxiliary synchronous signals the schematic diagram that physical mappings is conflicted;
Fig. 2 is the schematic flow sheet of base station side transmission demodulated reference signal;
Fig. 3 is the schematic diagram that demodulated reference signal is shifted, wherein:
Fig. 3-A is the schematic diagram to demodulated reference signal displacement in FDD general cyclic prefix (CP) frame;
Fig. 3-B is the schematic diagram to demodulated reference signal displacement in FDD extended cyclic prefix (CP) frame;
Fig. 3-C is the schematic diagram to demodulated reference signal displacement in TDD general cyclic prefix (CP) frame;
Fig. 3-D is the schematic diagram to demodulated reference signal displacement in TDD extended cyclic prefix (CP) frame;
Fig. 4 is the schematic flow sheet of mobile terminal side receiving demodulation reference signal;
Fig. 5 is system schematic of the present invention;
Fig. 6 is the simulation result figure that adopts the inventive method.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.
With respect to prior art, the present invention is with demodulated reference signal (DM-RS) displacement of conflict, thereby also can normally carry out channel estimating on the center 6RB of the downlink bandwidth of assurance master sync signal or auxiliary synchronous reference signal (PSS/SSS) transmission, thereby also can be at these 6 RB transmitting data signals.In order to reach this purpose, the flow process of base station side transmission DM-RS as shown in Figure 2.
Step S301: the base station obtains the physical location information of the PSS/SSS that will shine upon in this downlink frame.
Particularly, the time slot sequence number ns that PSS/SSS shines upon is determined in the base station at first, and according to 3GPP 36.211 agreement regulations, for the FDD frame structure, PSS and SSS are positioned on time slot 0 and time slot 10; For the tdd frame structure, PSS is positioned at subframe # 1 and subframe # 6, and SSS is positioned at time slot 1 and time slot 11;
Then, the OFDM symbol sequence number that PSS/SSS shines upon is determined according to the time slot sequence number in the base station, according to 3GPP 36.211 agreement regulations, for the FDD frame structure, the OFDM symbol sequence number of PSS is last OFDM symbol in corresponding time slot, and the OFDM symbol sequence number of SSS is last OFDM symbol in corresponding time slot.For the tdd frame structure, the OFDM symbol sequence number of PSS is the 3rd OFDM symbol in corresponding subframe, and the OFDM symbol sequence number of SSS is last OFDM symbol in corresponding time slot.
Therefore, the corresponding set by time slot sequence number and OFDM symbol sequence number of PSS/SSS physical mappings can be expressed as:
For FDD, conventional CP frame: slot# 0, ofdm#6}, slot# 0, ofdm#5}, slot# 10, ofdm#6}, slot# 10, ofdm#5} or
For FDD, expansion CP frame: { slot# 0, ofdm#5}, { slot# 0, ofdm#4}, { slot# 10, ofdm#5}, { slot# 10, ofdm#4}; Perhaps
For TDD, conventional CP frame: { subframe# 1 ofdm#2}, { slot# 1, ofdm#6}, { subframe# 6, ofdm#2}, { slot# 11, ofdm#6}, wherein subframe# 1 ofdm#2} and subframe# 6, therefore ofdm#2} can not clash with demodulated reference signal, ignores below; Perhaps
For TDD, expansion CP frame: { subframe# 1, ofdm#2}, { slot# 1, ofdm#5}, { subframe# 6, ofdm#2}, { slot# 11, ofdm#5}, wherein { subframe# 1 ofdm#2} and { subframe# 6, ofdm#2} can not clash with demodulated reference signal, ignores below therefore.
At last, be no matter which in above-mentioned time slot sequence number and the set of OFDM sequence number, PSS/SSS is mapped on corresponding 72 subcarriers of 6 wireless resource blocks (RB) at downstream bands center.
Thus, the base station can determine PSS/SSS is mapped on which physical resource unit (RE).
Step S302: the physical resource unit position that the DM-RS symbol will shine upon is determined in the base station.And judge whether successively to conflict mutually with the physical resource unit position of certain PSS/SSS symbol, if do not conflict, keep the invariant position of this DM-RS and transmit, continue the next DM-RS character position of judgement.If conflict changes step 3 over to.
Because the effect of DM-RS is carried out channel estimating for downlink physical shared channel (PDSCH) demodulation.Be the better demodulation effect that obtains, DM-RS should be mounted in the PDSCH channel as far as possible equably, according to 3GPP 36.211 agreements, PDSCH channel mapping to a time slot the 4th to last OFDM symbol on all bandwidth (all subcarriers), DM-RS also will be distributed on all bandwidth (all subcarriers) of OFDM symbol at PDSCH place, and more common method is to place a DM-RS reference signal every 5 subcarriers on an OFDM symbol at PDSCH place at present.Therefore exist DM-RS to produce conflict in PSS/SSS during in physical mappings, just described the pattern of this conflict as Fig. 1.
In practical operation, there is the search method of some optimizations can shorten the process that the base station finds that DM-RS conflicts with the PSS/SSS physical mappings.For example, at first the base station can judge whether the time slot sequence number at DM-RS place belongs to the possible time slot sequence number of the PSS/SSS shown in step S301, if do not belong to can directly get rid of the possibility that clashes, if belong to, judge further whether OFDM symbol sequence number that DM-RS shines upon belongs to the subset of the corresponding specific OFDM symbol sequence number of PSS/SSS time slot sequence number, do not belong to directly and get rid of, as belong to further relatively subcarrier sequence number.So just greatly dwindled workload relatively.
If DM-RS shines upon physical resource unit position is identical with PSS/SSS, enters third step, otherwise continue the comparison of next DM-RS character position.
Step S303: the DM-RS symbol physical mappings that will conflict with the PSS/SSS physical mappings is shifted.In integrating step S301, different conflict scenes illustrates concrete displacement scheme, as shown in Figure 3.
Fig. 3-A for be that the radio frames of the conventional CP of FDD frame structure produces the scene of conflict.The physical resource unit of conflict only may be positioned on 6, the center wireless resource block of the OFDM# 5 of time slot # 0 and time slot # 10 and OFDM# 6, be moved to the left a position to OFDM# 4 for the DM-RS symbol that is mapped on the OFDM# 5 symbol, move right on the OFDM# 0 of next time slot for the DM-RS symbol on OFDM#6.Expressed the position of the DM-RS symbol after the displacement in figure.
Fig. 3-B for be that the radio frames of FDD frame structure extension CP produces the scene of conflict.In such cases, the time slot of conflict and wireless resource block position are as above, but the OFDM symbol at physical resource unit place is different, be positioned on OFDM# 4 and OFDM# 5, be moved to the left a position to OFDM# 3 for the DM-RS symbol that is mapped on the OFDM# 4 symbol, move right on the OFDM# 0 of next time slot for the DM-RS symbol on OFDM#5.Expressed the position of the DM-RS symbol after the displacement in figure.
Fig. 3-C for be that the radio frames of the conventional CP of tdd frame structure produces the scene of conflict.In such cases, conflict may appear on the OFDM# 6 of time slot # 1 and time slot # 11, as shown in the figure, and with the DM-RS symbol of the collision position of the previous time slot OFDM# 0 to next time slot that moves right.
Fig. 3-D for be that the radio frames of tdd frame structure extension CP produces the scene of conflict.In such cases, the position that conflict occurs is the OFDM# 5 of time slot # 1 and time slot # 11, as shown in the figure, and with the DM-RS symbol of the conflict OFDM# 0 to next time slot that moves to right.
In sum, only need with the physical resource unit position of original DM-RS mapping to the left or to the right mobile OFDM symbol get final product, for all situations, the position of DM-RS symbol on subcarrier is constant.The benefit of doing like this is to have guaranteed that on frequency domain the DM-RS symbol is in the locational uniformity of subcarrier in frequency domain and backward compatibility, also guaranteed to greatest extent to avoid producing the overstocked or excessively rare situation of some DM-RS symbol through the uniformity of position on spacing of mobile DM-RS position and other symbols that do not move in the mobile minimum distance of trying one's best on time domain.Uniform because DM-RS distributes still approximate, the traffic data demodulation of Physical Shared Channel can not received impact, with respect to the existing solution of mentioning in background technology, this programme still can utilize 6, the center wireless resource block the transmission of data of conflict area, has improved data rate.
The flow process signal of mobile terminal side detection and receiving demodulation reference signal has been described as Fig. 4.
Step S304: mobile terminal detects and the receiving demodulation reference signal according to predefined physical resource unit position.
Further, if this position is the position that clashes with synchronizing signal, left or the OFDM position that moves right detect reception.Concrete mobile comprising:
For the conventional CP of FDD frame structure, collision position occurs in the OFDM# 5 of time slot # 0 and time slot # 10 and 6, the center wireless resource block of OFDM# 6, therefore preset same sub-carrier location that this regional DM-RS signal of mapping will be moved to the left to OFDM# 4 and detect and receive, preset will the move right same sub-carrier location of OFDM# 0 of next time slot of the DM-RS signal that is mapped on OFDM# 6 and detect and receive;
For FDD frame structure extension CP, collision position occurs in the OFDM# 4 of time slot # 0 and time slot # 10 and 6, the center wireless resource block of OFDM# 5, therefore preset same sub-carrier location that this regional DM-RS signal of mapping will be moved to the left to OFDM# 3 and detect and receive, preset will the move right same sub-carrier location of OFDM# 0 of next time slot of the DM-RS signal that is mapped on OFDM# 5 and detect and receive;
For the conventional CP of tdd frame structure, collision position occurs in 6, the center wireless resource block on the OFDM# 6 of time slot # 1 and time slot # 11, therefore presets will the move right same sub-carrier location of OFDM# 0 of next time slot of this regional DM-RS signal of mapping and detects and receive;
For tdd frame structure extension CP, collision position occurs in 6, the center wireless resource block on the OFDM# 5 of time slot # 1 and time slot # 11, therefore presets will the move right same sub-carrier location of OFDM# 0 of next time slot of this regional DM-RS signal of mapping and detects and receive.
Step 105: wireless terminal is estimated channel according to the demodulated reference signal that receives, and then the business datum on Physical Shared Channel is carried out demodulation.
Accompanying drawing 6 has provided the throughput simulation result of realizing traffic data demodulation according to said method, can find out significantly the almost not loss of data rate of adopting the inventive method business datum from figure, compare remarkable improvement with the existing scheme of mentioning in background technology.
Describe the system of demodulated reference signal transmission provided by the present invention in detail below in conjunction with accompanying drawing.
As shown in Figure 5, be the system of transmission demodulated reference signal provided by the present invention, comprise base station equipment and mobile terminal device.
Base station equipment includes:
Synchronizing signal physical mappings storage module B11, in this module, storage has the physical mappings position of all main synchronous reference signals and auxiliary synchronous signals (PSS/SSS).
Demodulated reference signal generation module B21: the position that is used for generating demodulated reference signal and determines its physical mappings.
Collision detection module B31: after generating a demodulated reference signal, whether the mapping position of searching for this reference signal is occupied by master sync signal or auxiliary synchronous signals, if it is go to the physical mappings mobile module, otherwise go to physical mappings and sending module.
Physical mappings mobile module B41: when judge module finds that demodulated reference signal is about to the physical resource unit position of mapping and master sync signal or auxiliary synchronous signals and clashes, mobile this mapping position is offset an OFDM symbol left or to the right, described in concrete shift position such as step S303.
Physical mappings and sending module B51 are placed into demodulated reference signal corresponding physical resource unit and send according to the mapping position of setting.
Mobile terminal device includes:
Demodulated reference signal physical resource unit location finding module U11, equally spaced physical resource unit location finding demodulated reference signal at each wireless resource block, if find that this physical resource unit is occupied by master sync signal or auxiliary synchronous signals, in situ left and right adjacent OFDM symbol location finding and find demodulated reference signal.
Particularly, the search rule of search module is as described in step S304.
Demodulated reference signal receiver module U21, the demodulated reference signal position receiving demodulation reference signal of determining according to search module.
obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step being made into the single integrated circuit module realizes.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a method of transmitting downlink demodulation reference signal, is characterized in that, comprising:
Main synchronous, the physical mappings positional information of auxiliary synchronous signals and the physical mappings positional information of demodulated reference signal are calculated in the base station;
If the physical mappings position of reference signal with mainly synchronize, the physical mappings position of auxiliary synchronous signals do not clash, and keeps the original physical mappings of reference signal position,
If conflict, with the original physical mappings of demodulated reference signal position left or the OFDM symbol that moves right, as new physical mappings position;
Demodulated reference signal after the base station will be shone upon is sent to mobile terminal;
Mobile terminal detects demodulated reference signal in the original physical mapping position, but for specific physics mapping position, moves to the left or to the right the physical mappings position probing demodulated reference signal of an OFDM symbol in the original physical mapping position.
2. method according to claim 1, is characterized in that, described base station comprises the original physical mappings of described demodulated reference signal position mobile OFDM symbol to the left or to the right,
For the time slot of FDD frame structure regular circulation prefix, the demodulated reference signal that original physical is mapped on the OFDM#5 symbol is moved to the left a position to OFDM#4, and original physical is mapped to demodulated reference signal on OFDM#6 and moves right on the OFDM#0 of next time slot; Perhaps,
For the time slot of FDD frame structure extension Cyclic Prefix, the demodulated reference signal that original physical is mapped on the OFDM#4 symbol is moved to the left a position to OFDM#3, and original physical is mapped to demodulated reference signal on OFDM#5 and moves right on the OFDM#0 of next time slot; Perhaps,
For the time slot of tdd frame structure regular circulation prefix, original physical is mapped to demodulated reference signal on the OFDM#6 symbol OFDM#0 to next time slot that moves to right; Perhaps,
For the time slot of tdd frame structure extension Cyclic Prefix, original physical is mapped to demodulated reference signal on the OFDM#5 symbol OFDM#0 to next time slot that moves to right.
3. method according to claim 1 and 2, is characterized in that, described mobile terminal moves the physical mappings position probing demodulated reference signal of an OFDM symbol for specific physics mapping position to the left or to the right in the original physical mapping position, comprise,
Time slot #0 and the OFDM#5 on time slot #10 and 6, the center on OFDM#6 wireless resource block for FDD frame regular circulation prefix, the position that original physical is mapped to demodulated reference signal on the OFDM#5 symbol is moved to the left to the upper demodulated reference signal that detects of OFDM#4, presets will the move right upper demodulated reference signal that detects of OFDM#0 of next time slot of the position that is mapped to the upper demodulated reference signal of OFDM#6; Perhaps,
Time slot #0 and the OFDM#4 on time slot #10 and 6, the center on OFDM#5 wireless resource block for FDD frame extended cyclic prefix, the position that original physical is mapped to demodulated reference signal on the OFDM#4 symbol is moved to the left to the upper demodulated reference signal that detects of OFDM#3, and original physical is mapped to the move right upper demodulated reference signal that detects of OFDM#0 of next time slot of demodulated reference signal position on OFDM#5; Perhaps,
For the time slot #1 of tdd frame regular circulation prefix and 6, the center wireless resource block on the OFDM#6 on time slot #11, the move right upper demodulated reference signal that detects of OFDM#0 of next time slot of original physical mapping position; Perhaps,
For the time slot #1 of tdd frame extended cyclic prefix and 6, the center wireless resource block on the OFDM#5 on time slot #11, the move right upper demodulated reference signal that detects of OFDM#0 of next time slot of original physical mapping position.
4. method according to claim 1, is characterized in that, described base station determines that according to frame structure type, circulating prefix-length and time slot sequence number the master is synchronous, the physical mappings position of auxiliary synchronous signals.
5. a base station that sends demodulated reference signal, is characterized in that, comprise,
The demodulated reference signal generation module is for generation of demodulated reference signal;
Whether the collision detection module is occupied by master sync signal, auxiliary synchronous signals for detection of the physical mappings position of demodulated reference signal, if conflict goes to the physical mappings mobile module, otherwise, go to physical mappings and sending module;
The physical mappings mobile module, be used for when the physical mappings position of the physical mappings position of demodulated reference signal and master sync signal or auxiliary synchronous signals clashes, the physical mappings position of mobile demodulated reference signal left or the OFDM symbol that moves right;
Physical mappings and sending module are placed into demodulated reference signal corresponding physical resource unit and send.
6. base station according to claim 5, is characterized in that, described physical mappings mobile module moves the physical mappings position of described demodulated reference signal, comprise,
For the time slot of FDD frame structure regular circulation prefix, the demodulated reference signal that original physical is mapped on the OFDM#5 symbol is moved to the left a position to OFDM#4, and original physical is mapped to demodulated reference signal on OFDM#6 and moves right on the OFDM#0 of next time slot; Perhaps,
For the time slot of FDD frame structure extension Cyclic Prefix, the demodulated reference signal that original physical is mapped on the OFDM#4 symbol is moved to the left a position to OFDM#3, and original physical is mapped to demodulated reference signal on OFDM#5 and moves right on the OFDM#0 of next time slot; Perhaps,
For the time slot of tdd frame structure regular circulation prefix, original physical is mapped to demodulated reference signal on the OFDM#6 symbol OFDM#0 to next time slot that moves to right; Perhaps,
For the time slot of tdd frame structure extension Cyclic Prefix, original physical is mapped to demodulated reference signal on the OFDM#5 symbol OFDM#0 to next time slot that moves to right.
7. the mobile terminal of a receiving demodulation reference signal, is characterized in that, comprise,
The demodulated reference signal search module is for the physical mappings position of determining demodulated reference signal;
The demodulated reference signal receiver module is for physical mappings determined according to search module position, receiving demodulation reference signal.
8. mobile terminal according to claim 7, is characterized in that, described demodulated reference signal search module is determined the physical mappings position of described demodulated reference signal, comprise,
At first described search module detects described demodulated reference signal in the equally spaced sub-carrier positions of all bandwidth to last OFDM symbol of the 4th on a time slot,
If the physical mappings position of described physical mappings position and master sync signal or auxiliary synchronous signals clashes, detect described demodulated reference signal in the OFDM position that moves to left or move to right of described position.
9. mobile terminal according to claim 8, is characterized in that, comprise,
Time slot #0 and time slot #10 for the conventional CP of FDD frame structure go up 6, center wireless resource block on OFDM#5 and OFDM#6, physical mappings position on original OFDM#5 is moved to the left to OFDM#4 and detects described demodulated reference signal, and the physical mappings position on original OFDM#6 moves right, and the OFDM#0 of next time slot is upper detects described demodulated reference signal;
Time slot #0 and the OFDM#4 of time slot #10 and 6, the center wireless resource block of OFDM#5 for FDD frame structure extension CP, physical mappings position on original OFDM#4 is moved to the left to OFDM#3 and detects described demodulated reference signal, and the physical mappings position on original OFDM#5 moves right, and the OFDM#0 of next time slot is upper detects described demodulated reference signal;
For 6, the center wireless resource block on the OFDM#6 of the time slot #1 of the conventional CP of tdd frame structure and time slot #11, the OFDM#0 of next time slot that moves right is upper detects described demodulated reference signal;
For 6, the center wireless resource block on the OFDM#5 of the time slot #1 of tdd frame structure extension CP and time slot #11, the OFDM#0 of next time slot that moves right is upper detects described demodulated reference signal.
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| CN110073693A (en) * | 2016-12-06 | 2019-07-30 | Oppo广东移动通信有限公司 | For demodulating method, terminal device and the network equipment of shared reference signal |
| CN110351035A (en) * | 2018-04-03 | 2019-10-18 | 电信科学技术研究院有限公司 | A kind of determination method, terminal and the base station of pilot frequency locations |
| CN110351046A (en) * | 2018-04-04 | 2019-10-18 | 华为技术有限公司 | Communication means, communication device and system |
| CN110892689A (en) * | 2017-07-13 | 2020-03-17 | 株式会社Ntt都科摩 | User terminal and wireless communication method |
| CN110945818A (en) * | 2017-07-21 | 2020-03-31 | 高通股份有限公司 | Multiplexing demodulation reference signals and synchronization signals in new radios |
| CN111108730A (en) * | 2017-06-21 | 2020-05-05 | 苹果公司 | Conflict handling for Synchronization Signal (SS) blocks |
| CN113507351A (en) * | 2016-03-30 | 2021-10-15 | 松下电器（美国）知识产权公司 | Wireless communication apparatus and wireless communication method |
| CN114422098A (en) * | 2017-08-03 | 2022-04-29 | 维沃移动通信有限公司 | Demodulation reference signal transmission method, network device, and computer-readable storage medium |
| US11343783B2 (en) | 2017-06-16 | 2022-05-24 | Lg Electronics Inc. | Method and apparatus for transmitting and receiving synchronization signal block |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010145608A1 (en) * | 2009-11-02 | 2010-12-23 | 中兴通讯股份有限公司 | Pilot frequency mapping method and adopted base station |
| CN102378110A (en) * | 2010-08-16 | 2012-03-14 | 中国移动通信集团公司 | Methods for sending and receiving demodulated reference signal (DM-RS) and devices for sending and receiving DM-RS |
| CN102469059A (en) * | 2010-11-15 | 2012-05-23 | 中兴通讯股份有限公司 | Method and device for carrying demodulation reference signal |
-
2012
- 2012-12-18 CN CN2012105515240A patent/CN103095637A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010145608A1 (en) * | 2009-11-02 | 2010-12-23 | 中兴通讯股份有限公司 | Pilot frequency mapping method and adopted base station |
| CN102378110A (en) * | 2010-08-16 | 2012-03-14 | 中国移动通信集团公司 | Methods for sending and receiving demodulated reference signal (DM-RS) and devices for sending and receiving DM-RS |
| CN102469059A (en) * | 2010-11-15 | 2012-05-23 | 中兴通讯股份有限公司 | Method and device for carrying demodulation reference signal |
Non-Patent Citations (1)
| Title |
|---|
| LG ELECTRONICS: "《3GPP TSG RAN WG1#69 R1-122275 Handling the Conflict of PSS/SSS and DM-RS in NCT》", 5 December 2012 * |
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