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WO2012130148A1 - Procédé et équipement de traitement de séquence pilote - Google Patents

Procédé et équipement de traitement de séquence pilote Download PDF

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Publication number
WO2012130148A1
WO2012130148A1 PCT/CN2012/073250 CN2012073250W WO2012130148A1 WO 2012130148 A1 WO2012130148 A1 WO 2012130148A1 CN 2012073250 W CN2012073250 W CN 2012073250W WO 2012130148 A1 WO2012130148 A1 WO 2012130148A1
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WIPO (PCT)
Prior art keywords
pilot
sequence
base station
group
pilot sequence
Prior art date
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PCT/CN2012/073250
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English (en)
Chinese (zh)
Inventor
陈文洪
高秋彬
彭莹
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Publication of WO2012130148A1 publication Critical patent/WO2012130148A1/fr
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]

Definitions

  • the invention relates to a method and a device for processing a pilot sequence.
  • the application is filed on March 29, 2011, the Chinese Patent Office, the application number is 201110076780.4, and the invention is entitled "A Method and Apparatus for Processing a Pilot Sequence". Priority is hereby incorporated by reference in its entirety.
  • the present invention relates to wireless communication technologies, and in particular, to a method and a device for processing a pilot sequence. Background technique
  • RS reference signal/reference signal
  • Cdl_ID cell identifier
  • RS initialization in different cells is generally different.
  • MU-MIMO Multi-User MIMO, Multiple Input Multiple Output
  • the base stations of multiple cells transmit data to multiple UEs (User Equipments) at the same time, or receive data of multiple UEs at the same time, and these UEs occupy the same physical resources for multiplexing. If the multiplexed UE belongs to the same cell, the orthogonality of the RS signals between different UEs can be ensured by the configuration of the RS (such as port, cyclic shift, etc.).
  • the technical problem to be solved by the present invention is to provide a method and a device for processing a pilot sequence, which are used to ensure the orthogonality between RSs when supporting resource multiplexing between UEs in different cells.
  • a method for processing a pilot sequence which includes the following steps. Step:
  • the base station indicates the pilot identity of the UE or the UE group.
  • a method for processing a pilot sequence including the following steps:
  • the UE generates a pilot sequence according to the pilot identifier.
  • a method for processing a pilot sequence including the following steps:
  • a pilot sequence is generated based on the pilot identification.
  • a base station is provided in the embodiment of the present invention, including:
  • a determining module configured to determine a pilot identifier used by the pilot sequence of the UE or the UE group when generating
  • an indication module configured to indicate the pilot identifier of the UE or the UE group.
  • a user equipment is provided in the embodiment of the present invention, including:
  • a receiving module configured to receive an indication of a base station, where the indication includes a pilot identifier used by a base station or a UE group determined by a base station to generate a pilot sequence;
  • a generating module configured to generate a pilot sequence according to the pilot identifier.
  • the embodiment of the present invention provides a processing device for a pilot sequence, including: a determining module, configured to determine, according to a preset rule, a pilot identifier used when generating a pilot sequence;
  • a generating module configured to generate a pilot sequence according to the pilot identifier.
  • the UE that can be scheduled for resource multiplexing adopts the same The RS-based sequence, so that different RS configurations can be utilized to ensure RS orthogonality between UEs. And further improve the channel estimation can. Further, mutual interference of RSs between UEs performing resource multiplexing can also be reduced.
  • FIG. 1 is a schematic diagram of a single user JT according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a multi-user JT according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for processing a base station side pilot sequence in an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of a method for processing a pilot sequence in an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a processing device of a pilot sequence in an embodiment of the present invention. detailed description
  • a downlink DMRS (demodulation reference signal) can be transmitted from multiple ports, and the terminal performs channel detection according to the channel estimation obtained by the DMRS.
  • the DMRS scrambling sequence is generated by the following equation:
  • the RB is the maximum number of RBs (resource blocks) in the downlink :
  • the pseudo-random sequence is initialized by the following formula:
  • ⁇ t (L" s /2"+l)'(2J +l)'2 16 + " Where s is the slot number, The serving cell ID (identification) for the UE,
  • ⁇ 10 is the ID of the scrambling sequence and takes a value of 0 or 1.
  • the UE can have two different DMRS port configurations and two different scrambling sequence IDs (SCID: Scrambling ID) configurations, so it can support up to 4 users based on DMRS. Multiplexed transmission. At this time, different users have up to four DMRS configurations, which are:
  • a set of transmission points for joint transmission of a certain UE or group of UEs is generally called a cooperative cluster, and each cooperative cluster may have its own group ID (group identifier) to identify different cooperative clusters.
  • group ID group identifier
  • Multiple transmission points (cells) in a cooperative cluster can simultaneously transmit data to one or more UEs to obtain joint processing and MU-MIMO gain.
  • Figure 1 is a schematic diagram of single-user JT (Joint Transmission).
  • Figure 2 is a schematic diagram of multi-user JT. If the same resource only transmits data to one UE, it is called single-user JT, as shown in Figure 1. If the same The resource transmits data to multiple UEs at the same time, which is called multi-user JT, as shown in Figure 2. In the case of multi-user JT, if the multiplexed UE belongs to a different serving cell, for example, UE1 belongs to Cdll and UE3 belongs to Cell3 in FIG.
  • the DMR base sequence is obtained by the following equation: Group hopping pattern
  • the pseudo-random sequence is used at the beginning of each radio frame. Initialize.
  • the UL (Up-Link, Uplink) DMRS base sequence generation is related to the cell ID.
  • the UL DMRS base sequence of the two cells is the same, and the DMRS sequence is followed in different time slots.
  • the ring shift and the Cell ID are also related, and the cyclic shift calculation formula is as follows:
  • PDCCH physical downlink control channel
  • the cyclic shift hopping sequence generation is also different, so that the cyclic shift hopping between the two time slots is different for different cells, and thus the OCC (Orthogonal Cover Code, The orthogonality code based on the time slot is used to obtain orthogonality between the two cell DMRS sequences.
  • OCC Orthogonal Cover Code
  • MU-MIMO multiplexing transmission between UEs mainly relies on cyclic shift of sequence or OCC to obtain orthogonality. If the UE belongs to a different cell, the cell IDs are different, and the generated DMRS base sequences are also different. At this time, orthogonality cannot be guaranteed by different cyclic shifts. At the same time, since the cyclic shift hopping between the slots is different for different Cell IDs, the OCC cannot be used to obtain orthogonality, which greatly limits the flexibility of resource multiplexing between UEs. In many cases, especially in a CoMP scenario, it is difficult to ensure the orthogonality of DMRS between UEs in different cells, and this will cause large interference in the DMRS of adjacent cells in the system.
  • the orthogonality of the RS signals between different UEs can be ensured by the configuration of the RS (such as port, cyclic shift, etc.).
  • the multiplexed UEs belong to different cells, their RS-based sequences are different, and the orthogonality cannot be guaranteed by different RS configurations.
  • a method and a device for generating a pilot sequence and a pilot sequence are provided.
  • the base station notifies the UE of the pilot sequence generation parameter by using some signaling, and the UE performs the parameter according to the parameter.
  • the generation of the RS-based sequence ensures that the UEs performing the multiplexed transmission use the same base sequence, and different RS configurations can be utilized to reduce mutual interference.
  • the base station may indicate or specify the parameter RS ID used by the UE/UE group for generating the uplink and downlink pilot sequences by using certain signaling, that is, adopting a new pilot identifier (ID). It replaces the cell ID used in the generation of the pilot sequence in the prior art, thereby reducing the mutual interference of the RS between the UEs performing resource multiplexing.
  • ID new pilot identifier
  • FIG. 3 is a schematic flowchart of a method for processing a base station side pilot sequence. As shown in the figure, when the indication is performed on the base station side, the following steps may be included:
  • Step 301 The base station determines a pilot identifier used by the pilot sequence of the user equipment UE or the UE group when generating.
  • Step 302 The base station indicates the pilot identifier of the UE or the UE group.
  • FIG. 4 is a schematic flowchart of a method for processing a UE-side pilot sequence. As shown in the figure, correspondingly, when generating a pilot sequence on the UE side, the following steps may be included:
  • Step 401 The UE receives an indication of the base station, where the indication includes a pilot identifier used by the UE or the pilot sequence determined by the base station to generate the pilot sequence.
  • Step 402 The UE generates a pilot sequence according to the pilot identifier.
  • the generating, by the UE, the pilot sequence according to the pilot identifier may include: when the pilot sequence is a downlink DMRS, CRS, or CSIRS, using the pilot flag instead of the serving cell ID or the scrambling sequence initialization value to generate a pilot.
  • the scrambling sequence; the sequence identifier generates a pilot base sequence pattern and/or a frequency hopping pattern instead of the serving cell ID or the pattern initialization value.
  • the hopping pattern may include one of a sequence hopping pattern, a sequence group hopping pattern, a cyclic shift hopping pattern, or any combination.
  • the base sequence pattern, the sequence group hopping pattern, the sequence hopping pattern and the cyclic shift hopping pattern may be obtained by using the same pilot identifier, or may be obtained by the base station indicating different pilot identifiers.
  • a pilot sequence is used to obtain a base sequence pattern, a sequence group hopping pattern and a sequence hopping pattern, and another pilot flag is used to obtain a cyclic shift hopping pattern.
  • the base station uses the same sequence to receive, and may also be used after the base station generates the downlink pilot sequence to send, and the UE generates the same pilot sequence according to the pilot identifier to receive.
  • the pilot identifier described in the embodiment may be an N_RS ID similar to a Cell ID, or may be an initialization value of a pilot sequence pattern or a hopping pattern.
  • the base station when the base station determines the pilot identifier used by the pilot sequence of the UE or the UE group, the base station may include:
  • the base station determines the pilot identifier used by the UE or the UE group when generating the pilot sequence; or, after performing joint scheduling of resources with the other base stations, the base station negotiates to determine the pilot identifier used by the UE or the UE group when generating the pilot sequence. .
  • the base station may determine the RS ID parameter used by the UE to generate the pilot sequence, and may include at least the following methods:
  • the base station determines the RS ID parameter used by the UE to generate the pilot sequence.
  • the RS ID parameter may be the pilot identifier itself used to generate the pilot sequence, or may be a mapping index that enables the UE or the UE group to obtain the pilot identifier used to generate the pilot sequence, and uses the RS ID parameter. This designation is to facilitate understanding by those skilled in the art and to make the full text clear.
  • the existing RS ID can be replaced by the new RS ID (pilot ID), but the RS ID itself may not be the cell ID, and the cell ID is only a typical value.
  • Embodiments It is assumed that the base stations of two cells interact with each other through the channel information, and determine that two UEs respectively belong to the two cells, occupy the same downlink physical resource for downlink transmission.
  • their RS IDs may be set to be the same, and the base station notifies the respective UEs, instead of the serving cell IDs for the DMRSs.
  • the sequence is generated to obtain the same DMRS scrambling sequence. Then, through the information exchange between the two cell base stations, the two UEs are transmitted by using different DMRS ports, thereby obtaining orthogonality.
  • the pilot sequence may include one or a combination of the following pilot sequences: DMRS, SRS (Sounding Reference Signal), CSI-RS (channel state information reference signal), CRS (Common Reference Signal, Common Reference Signal).
  • DMRS Downlink Reference Signal
  • SRS Sounding Reference Signal
  • CSI-RS channel state information reference signal
  • CRS Common Reference Signal
  • the pilot sequence in the implementation may include an uplink pilot sequence and/or a downlink pilot sequence, where:
  • the uplink pilot sequence may include one or more of the following: DMRS, SRS;
  • the downlink pilot sequence may include one or more of the following: CSI-RS, DMRS, CRS.
  • the base station indicates, by using the high layer signaling or the PDCCH signaling, the processing manner of the RS ID parameter used by the UE or the UE group to generate the RS sequence.
  • the base station indicates the pilot identifier of the UE or the UE group, and may include:
  • the base station may indicate, by using the high layer signaling, a pilot identifier used by the UE or the UE group when generating the pilot sequence.
  • the indication when the indication is indicated by the base station by using the high layer signaling, the indication includes the pilot identifier used by the UE when generating the pilot sequence, and the UE may generate the pilot sequence according to the pilot identifier.
  • the base station may indicate, by using the high layer signaling, the UE or the UE group to obtain a mapping index of the pilot identifier used to generate the pilot sequence.
  • the indication when the indication is that the base station indicates by using the high layer signaling, the indication includes a mapping index of the pilot identifier used by the UE to generate the pilot sequence, and the UE may obtain the pilot identifier according to the mapping index, and generate a pilot. sequence.
  • the base station may indicate, by using the PDCCH signaling, the UE or the UE group to obtain a mapping index of the pilot identifier used to generate the pilot sequence.
  • the indication when the indication is that the base station indicates by using the PDCCH signaling, the indication includes a mapping index of the pilot identifier used by the UE to generate the pilot sequence, where the UE may A pilot sequence is generated after the pilot identifier is obtained according to the mapping index.
  • the method when the base station indicates that the UE or the UE group obtains the mapping index of the pilot identifier used to generate the pilot sequence, the method further includes:
  • the base station and the UE or the UE group pre-arrange the mapping relationship between the mapping index and the pilot identifier, or notify the mapping relationship between the mapping index and the pilot identifier of the UE or the UE group through the high layer signaling, so that the UE or the UE group can be configured according to the UE or the UE group.
  • the mapping index obtains a pilot identifier used to generate a pilot sequence.
  • the base station by using the PDCCH signaling, to indicate that the UE or the UE group obtains the mapping index of the pilot identifier used to generate the pilot sequence, may further include: the base station independently instructing the UE or the UE group to acquire the pilot sequence by using the PDCCH.
  • the mapping index of the used pilot identifier is used; or the base station jointly encodes the mapping index of the pilot identifier used by the UE or the UE group to generate the pilot sequence and other indication information in the PDCCH, and then indicates to the UE or the UE group.
  • the acquiring, by the UE, the pilot identifier according to the mapping index may include: determining, according to a mapping relationship between the mapping index and the pilot identifier pre-agreed by the base station and the UE or the UE group, the used pilot identifier;
  • the UE receiving the indication that the base station performs the PDCCH signaling may further include:
  • the UE acquires a mapping index of a pilot identifier used by the base station to generate a pilot sequence independently indicated by the PDCCH; ⁇ , , , , , ' I , , , , , , , , , , , , ,
  • the indication information of the other indication information in the PDCCH is jointly encoded, and the mapping index of the pilot identifier used to generate the pilot sequence is obtained therefrom.
  • the base station indicates, by using the high layer signaling, the RS ID or the RS ID configuration used by the UE/UE group to generate the RS sequence.
  • the base station can directly indicate the RS ID of the UE through the high layer signaling, and can also indicate the RS through the high layer signaling. ID configuration.
  • the RS IDs of different configurations can be pre-agreed or the UE can be notified through other high-level signaling.
  • the base station may also indicate, by using PDCCH signaling, the UE/UE group to use its RS sequence generation.
  • RS ID configuration The RS IDs corresponding to different configurations may be pre-agreed or notified to the UE by other higher layer signaling.
  • the RS ID is also the pilot identification itself used, and the RS ID configuration refers to the mapping index. Second, the way the base station and the UE agree.
  • the UE obtains the RS ID used for the RS sequence generation according to the rules agreed with the base station.
  • FIG. 5 is a schematic diagram of a process implementation process of a pilot sequence, as shown in the figure, on the UE side and
  • the base station side can generate the pilot sequence can include the following steps:
  • Step 501 Determine, according to a preset rule, a pilot identifier used when generating a pilot sequence.
  • Step 502 Generate a pilot sequence according to the pilot identifier.
  • generating the pilot sequence according to the pilot identifier may include:
  • the pilot flag is used instead of the serving cell ID or the scrambling sequence initialization value to generate a pilot scrambling sequence; when the pilot replaces the serving cell ID or the pattern initialization value to generate a pilot Base sequence pattern and / or hopping pattern.
  • the hopping pattern may include one of a sequence hopping pattern, a sequence group hopping pattern, a cyclic shift hopping pattern, or any combination.
  • the solution can be implemented on the base station or on the UE.
  • the pilot sequence under implementation may include one of the following pilot sequences or a combination thereof: DMRS, SRS, CSI-RS, CRS.
  • the preset rule may include:
  • the pilot identifier used in generating the pilot sequence is obtained according to the group ID of the cooperative cluster where the UE is located.
  • the base station can agree with the UE to have a fixed rule, and the UE obtains the RS ID used for generating the RS sequence according to the rule, and the base station does not need an additional signaling indication.
  • the rules here can include:
  • the cell ID of the serving cell and/or the coordinated cell of the UE Calculate the RSID used;
  • the RS ID is obtained according to the group ID of the collaboration cluster where the UE is located.
  • the base station directly indicates the RS ID used by the UE for generating the pilot sequence through the high layer signaling, or indicates the multiple RS IDs through the high layer signaling to select one of the RS ID values through the PDCCH signaling.
  • the base sequence and the cyclic shift value are obtained by using the ID instead of the cell ID.
  • the specific sequence generation formula is as follows:
  • Random sequence Initialize at the beginning of each radio frame.
  • the RS ID indicated to the UE for the base station, instead of the location of the original Cell ID.
  • the base station may indicate that one ID is used for all the above formulas, and may also indicate that multiple IDs are used for different expressions, and the UE side calculates different expressions by using corresponding IDs.
  • the UE may obtain a base sequence pattern, a sequence group hopping pattern, and a sequence hopping pattern by using an RS ID indicated by the base station, and then obtain a cyclic shift hopping pattern by using another RS ID indicated by the base station.
  • the base station indicates, by using the PDCCH signaling, the RS ID configuration used by the UE to generate the pilot sequence, that is, the mapping relationship of the cell identifier used to generate the pilot sequence, which may be jointly encoded with other PDCCH signaling; Signaling its possible RS ID, the instructions are as follows:
  • the base station indicates, by means of the 1/2-bit high-layer signaling, the RS ID configuration used by the UE for generating the pilot sequence, that is, the mapping relationship of the cell identifier used to generate the pilot sequence, and the other possible high-level signaling to notify the possible RS. ID, the instructions are as follows: Finger bow 1 indication content
  • I calculate its RS ID based on the cell count of its serving cell and/or cooperating cell
  • the UE After receiving the indication index, the UE obtains the RS ID according to the indication index and then generates the pilot sequence. If the content is an RS ID indicated by the high layer signaling, the UE replaces the cell ID in the current generation scheme with the RS ID indicated by the high layer signaling to generate the pilot sequence.
  • 3 ⁇ 4 « 2" + 1) ⁇ (2 + 1) ⁇ 2 1 ⁇ + 3 ⁇ 4 ⁇ s is the slot number and the ID is the RSID of the UE.
  • the base station indicates the RSID configuration used by the UE for its pilot sequence generation through 1/2-bit PDCCH signaling, and can notify the RSID corresponding to its possible different configurations through other high-layer signaling, as follows:
  • the UE After receiving the indication index, the UE obtains the RS ID according to the indication index and then generates the pilot sequence. If the indication content is that the cell ID of the serving cell is used as the RS ID, the method for generating the pilot sequence of the ij is the same as the current scheme. If only the content is the RS ID indicated by the high layer signaling, the UE replaces the cell ID in the current generation scheme with the RS ID indicated by the higher layer signaling to generate the pilot sequence.
  • the UE and the base station agree to calculate the used RS ID according to the predetermined formula according to the cell ID of the serving cell and the coordinated cell of the UE, and assume that the cell included in the cooperative cluster where the UE is located
  • the IDs are Cell_ID_l, Cell_ID_2 and Cell_ID_3, respectively, and the UE calculates the RS ID used according to the three cell IDs, as follows:
  • the base station and the user equipment are also provided in the embodiment of the present invention. Since the principle of solving the problem is similar to the processing method of a pilot sequence, the implementation of these devices can be referred to the implementation of the method, and the repetition is performed. No longer.
  • FIG. 6 is a schematic structural diagram of a base station, as shown in the figure, the base station may include:
  • a determining module 601 configured to determine a pilot identifier used by the pilot sequence of the UE or the UE group when generating;
  • the indication module 602 is configured to indicate the pilot identifier of the UE or the UE group.
  • the determining module may include: a first determining unit and/or a second determining unit, where:
  • a first determining unit configured to determine a pilot identifier used by the UE or the UE group when generating the pilot sequence
  • a second determining unit configured to determine, by the other base stations, the pilot identifier used by the UE or the UE group when generating the pilot sequence, after determining the joint scheduling of the resources.
  • the determining module may be further configured to determine a pilot sequence including one or a combination of the following pilot sequences: DMRS, SRS, CSI-RS, CRS.
  • the indication module may include one or a combination of the following units: a first indication unit, configured to indicate, by using the high layer signaling, a pilot identifier used by the UE or the UE group when generating the pilot sequence;
  • a second indication unit configured to indicate, by using the high layer signaling, that the UE or the UE group obtains a mapping index of a pilot identifier used to generate the pilot sequence
  • a third indication unit configured to indicate, by using the PDCCH signaling, the mapping index of the pilot identifier used by the UE or the UE group to generate the pilot sequence.
  • the indication module may be further configured to pre-arrange the mapping relationship between the mapping index and the pilot identifier with the UE or the UE group when instructing the UE or the UE group to obtain the mapping index of the pilot identifier used to generate the pilot sequence,
  • the mapping relationship between the mapping index and the pilot identifier of the UE or the UE group is notified by the high layer signaling, so that the UE or the UE group can obtain the pilot identifier used for generating the pilot sequence according to the mapping.
  • the third indicating unit is further configured to:
  • the other indication information in the PDCCH is jointly encoded and indicated to the UE or the UE group.
  • the UE may include: a receiving module 701, configured to receive an indication of a base station, where the indication includes a pilot sequence of a UE or a UE group determined by a base station, used in generating Pilot identification;
  • the generating module 702 is configured to generate a pilot sequence according to the pilot identifier.
  • the generating module may be further configured to generate a pilot sequence including one or a combination of the following pilot sequences: DMRS, SRS, CSI-RS, CRS.
  • the generating module may include one or a combination of the following units:
  • the first generating unit is configured to: when the indication is that the base station indicates by using high layer signaling, where the indication includes a guide used by the UE when generating the pilot sequence.
  • the frequency is identified, a pilot sequence is generated according to the pilot identifier;
  • a second generating unit configured to: when the indication is that the base station performs indication by using high layer signaling
  • the indication includes the mapping index of the pilot identifier used by the UE to generate the pilot sequence
  • the pilot sequence is obtained according to the mapping, and the pilot sequence is generated.
  • a third generating unit configured to: when the indication is that the base station indicates by using the PDCCH signaling, where the indication includes the mapping index of the pilot identifier used by the UE to generate the pilot sequence, after acquiring the pilot identifier according to the mapping index, Generate a pilot sequence.
  • the generating module may be further configured to determine, according to a mapping relationship between the mapping index and the pilot identifier pre-agreed by the base station and the UE or the UE group, the pilot identifier used when acquiring the pilot identifier according to the mapping index; or The pilot identifier used is determined according to the mapping relationship between the mapping index and the pilot identifier notified by the base station through the high layer signaling.
  • the third generating unit is further configured to:
  • the receiving base station combines the mapping index of the pilot identifier used for generating the pilot sequence with the other indication information in the PDCCH, and obtains a mapping index of the pilot identifier used to generate the pilot sequence.
  • the pilot flag is used instead of the serving cell ID or the scrambling sequence initialization value to generate a pilot scrambling sequence; the sequence identifier generates a pilot instead of the serving cell ID or the pattern initialization value.
  • Base sequence pattern and / or hopping pattern are used instead of the serving cell ID or the scrambling sequence initialization value.
  • the frequency hopping pattern includes one or any combination of the following:
  • FIG. 8 is a schematic structural diagram of a processing device of a pilot sequence. As shown in the figure, the device may include:
  • a determining module 801 configured to determine, according to a preset rule, a pilot identifier used when generating a pilot sequence
  • the generating module 802 is configured to generate a pilot sequence according to the pilot identifier.
  • the processing device of the pilot sequence may be located at the base station or at the UE.
  • the generating module may be further configured to generate a pilot sequence including one or a combination of the following pilot sequences: DMRS, SRS, CSI-RS, CRS.
  • the determining module may be further configured to determine a pilot identifier used in generating the pilot sequence according to the following preset rules:
  • the generating module is further configured to:
  • the pilot flag is used instead of the serving cell ID or the scrambling sequence initialization value to generate a pilot scrambling sequence; the sequence identifier generates a pilot instead of the serving cell ID or the pattern initialization value.
  • Base sequence pattern and / or hopping pattern are used instead of the serving cell ID or the scrambling sequence initialization value.
  • the frequency hopping pattern includes one of the following hopping patterns or a combination thereof:
  • the base station indicates the parameter RS ID used by the UE/UE group to generate the pilot sequence, which is used to replace the cell ID used in the sequence generation in the prior art.
  • the mutual interference of the inter-UE RSs for resource multiplexing is reduced. specific:
  • the base station may indicate the RS ID or RS ID configuration used by the RS sequence generation through high layer signaling;
  • the base station may indicate the RS ID configuration used by the RS sequence generation by using the PDCCH signaling; the UE may obtain the RS used for the RS sequence generation according to the rules agreed with the base station.
  • the UE adopts the same RS-based sequence, so that different RS configurations are used to ensure RS orthogonality between UEs, thereby improving channel estimation performance; and signaling overhead is small and configuration is flexible.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

La présente invention porte sur un procédé et un équipement de traitement de séquence pilote, lequel procédé comprend les opérations suivantes : une station de base donne l'instruction à un équipement utilisateur (UE) ou à un groupe d'UE de générer un identificateur (ID) de pilote devant être utilisé par la séquence pilote, ou détermine, conformément à des règles préétablies sur lesquelles se sont accordés la station de base et l'UE, un ID de pilote à utiliser lors de la génération de la séquence pilote, et génère ultérieurement la séquence pilote conformément à l'ID de pilote. L'UE détermine l'ID de pilote à utiliser lors de la génération d'une séquence pilote conformément aux instructions de la station de base ou conformément aux règles préétablies sur lesquelles se sont accordés la station de base et l'UE, et génère ultérieurement un signal pilote conformément audit ID de pilote. Le procédé de l'invention peut utiliser des configurations de séquence pilote différentes afin de garantir l'orthogonalité de séquences pilotes entre des équipements utilisateur, ce qui améliore ainsi l'estimation du canal.
PCT/CN2012/073250 2011-03-29 2012-03-29 Procédé et équipement de traitement de séquence pilote Ceased WO2012130148A1 (fr)

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