WO2012129969A1 - 解调参考信号配置指示、传输、控制信令检测方法及设备 - Google Patents

解调参考信号配置指示、传输、控制信令检测方法及设备 Download PDF

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Publication number
WO2012129969A1
WO2012129969A1 PCT/CN2012/070071 CN2012070071W WO2012129969A1 WO 2012129969 A1 WO2012129969 A1 WO 2012129969A1 CN 2012070071 W CN2012070071 W CN 2012070071W WO 2012129969 A1 WO2012129969 A1 WO 2012129969A1
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WIPO (PCT)
Prior art keywords
dmrs
scrambling sequence
base station
control channel
dmrs port
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PCT/CN2012/070071
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English (en)
French (fr)
Inventor
陈文洪
高秋彬
彭莹
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电信科学技术研究院
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Publication of WO2012129969A1 publication Critical patent/WO2012129969A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0014Three-dimensional division
    • H04L5/0023Time-frequency-space
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a demodulation reference signal configuration indication method and device for a downlink control channel, a transmission method and device for demodulation reference signals on a downlink control channel, and a detection method for control signaling on a downlink control channel. device. Background technique
  • control channel PDCCH In the current LTE (Long Term Evolution) and LTE-A (Long Term Evolution-Advanced) systems, the control channel PDCCH
  • the physical downlink control channel (Physical Downlink Control Channel) can only be transmitted in the first few symbols of one subframe, and the user obtains its scheduling information by performing blind detection in the PDCCH resource.
  • some methods need to be considered to enhance the control channel and increase the capacity to support more user scheduling.
  • One of the methods is the control channel design method similar to the Relay system.
  • FIG 1 is a schematic diagram showing the structure of a PDCCH and a PDSCH (Physical Downlink Shared Channel) of the Relay system.
  • the PCFICH is a Physical Control Format Indicator Channel.
  • the PDCCH and PDSCH resource structure diagram of the Relay system is shown in Figure 1, where R-PDCCH (Relay-PDCCH) is used by the base station to transmit control signaling to the Relay, R-PDSCH.
  • R-PDCCH Relay-PDCCH
  • Relay-PDSCH is used by the base station to transmit data to the Relay.
  • the relay After receiving the control signaling, the relay demodulates the R-PDSCH, and then uses the PDCCH and the PDSCH to transmit control signaling and data to the UE (User Equipment, user equipment).
  • the R-PDCCH and the R-PDSCH both occupy resources originally used for transmitting the PDSCH.
  • the R-PDCCH if the interleaving method is adopted, only CRS (Cell-specific reference signals) demodulation can be used; if the non-interleaving method is adopted, the Relay can use CRS or DMRS ( The demodulation reference signal is demodulated, and the base station configures its demodulation method through high layer signaling.
  • the first time slot of the R-PDCCH is used for transmitting downlink scheduling information, and the second time slot is used for transmitting uplink scheduling information.
  • the base station notifies each Relay of the physical resources occupied by its control signaling through high-level signaling, so that the Relay performs blind detection on the corresponding resources to obtain its control information. Since the PDCCH is not transmitted at this time, the Relay only needs to blindly check the R-PDCCH.
  • the base station may separate a part of resources in the PDSCH for transmitting control signaling to the UE, that is, a UE-specific control channel, and for the UE, there is a common control channel and a dedicated control channel.
  • the base station can notify the UE of the physical resources occupied by its dedicated control channel through high-level signaling, and the demodulation mode used.
  • the UE first needs to blindly detect the common control information in the common search space, and then blindly check its own control information through the common control channel or the dedicated control channel.
  • the disadvantages of the prior art are: According to the current scheme, if the DMRS is used to demodulate the dedicated control channel, only a fixed DMRS port and a scrambling sequence can be used. Therefore, multiple users are not supported in the prior art.
  • the orthogonal DMRSs are multiplexed, thereby limiting the capacity of the dedicated control channel. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a demodulation reference signal configuration indication method and device for a downlink control channel, a transmission method and device for demodulation reference signals on a downlink control channel, and a detection method for control signaling on a downlink control channel.
  • the device is configured to support multiple users to reuse the same dedicated control channel after adding a UE-specific control channel.
  • the embodiment of the present invention provides a DMRS configuration indication method for a downlink control channel, which includes the following steps:
  • the base station determines a DMRS port and/or a DMRS scrambling sequence used when transmitting control signaling on the dedicated control channel;
  • the base station indicates the DMRS port and/or the DMRS scrambling sequence to the user equipment UE.
  • a method for detecting control signaling on a downlink control channel including the following steps:
  • the UE receives an indication by the base station about the DMRS port and/or the DMRS scrambling sequence, which is a DMRS port and/or DMRS scrambling used by the base station to transmit control signaling on the dedicated control channel.
  • the UE detects the control signaling transmitted on the dedicated control channel according to the DMRS port and/or the DMRS scrambling sequence information in the indication.
  • the embodiment of the present invention provides a method for transmitting a DMRS signal on a downlink control channel, including the following steps:
  • the eNB determines the DMRS port and/or the DMRS scrambling sequence used for transmitting the control signaling on the dedicated control channel according to a preset rule, where the preset rule is consistent with the rule for detecting the control signaling on the UE;
  • the base station transmits the DMRS signal on the dedicated control channel based on the determined DMRS port and/or the DMRS scrambling sequence.
  • a method for detecting control signaling on a downlink control channel including the following steps:
  • the rules of the DMRS port and/or the DMRS scrambling sequence are consistent;
  • the UE detects the control signaling transmitted on the dedicated control channel according to the determined DMRS port and/or the DMRS scrambling sequence.
  • a base station is provided in the embodiment of the present invention, including:
  • a determining module for determining the transmission of control signaling on a dedicated control channel DMRS port and/or DMRS scrambling sequence
  • an indication module configured to indicate to the UE the DMRS port and/or the DMRS scrambling sequence.
  • a user equipment is provided in the embodiment of the present invention, including:
  • a receiving module configured to receive, by the base station, an indication about a DMRS port and/or a DMRS scrambling sequence, where the DMRS port and/or the DMRS scrambling sequence are used by the base station to transmit control signaling on the dedicated control channel Or a DMRS scrambling sequence; a detecting module, configured to detect, according to the DMRS port and/or the DMRS scrambling sequence information in the indication, the control signaling transmitted on the dedicated control channel.
  • a base station is provided in the embodiment of the present invention, including:
  • a determining module configured to determine, according to a preset rule, a DMRS port and/or a DMRS scrambling sequence used when transmitting control signaling on the dedicated control channel, where the preset rule is consistent with a rule for detecting control signaling on the UE ;
  • a transmission module configured to transmit the DMRS signal on the dedicated control channel according to the determined DMRS port and/or the DMRS scrambling sequence.
  • a user equipment is provided in the embodiment of the present invention, including:
  • a determining module configured to determine, according to a preset rule, a DMRS port and/or a DMRS scrambling sequence used when detecting control signaling on the dedicated control channel, where the preset rule and the base station determine to transmit control signaling on the dedicated control channel
  • the rules of the DMRS port and/or the DMRS scrambling sequence used are the same;
  • a detecting module configured to detect, according to the determined DMRS port and/or the DMRS scrambling sequence, control signaling transmitted on the dedicated control channel.
  • the base station may indicate the DMRS port and/or the DMRS scrambling sequence to the UE, or the base station and the UE determine the DMRS port and/or the DMRS scrambling sequence according to the preset rule, therefore, the UE does not It is further necessary to use only a fixed DMRS port and a scrambling sequence to detect control signaling, so that multiple users can be multiplexed with the same dedicated control channel, thereby increasing the capacity of the control channel.
  • FIG. 1 is a schematic diagram of a PDCCH and PDSCH structure of a relay system in the background;
  • FIG. 2 is a schematic flowchart of a method for implementing a DMRS configuration indication method of a downlink control channel of a base station according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a method for detecting a control signaling method on a downlink control channel of a UE in an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of a method for transmitting a DMRS signal on a downlink control channel of a base station in an agreed mode according to an embodiment of the present disclosure
  • FIG. 5 is a schematic flowchart of a method for detecting a control signaling on a downlink control channel of a UE in an agreed mode according to an embodiment of the present disclosure
  • 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 second base station according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of two user equipments according to an embodiment of the present invention.
  • the downlink DMRS sequence is generated by the following equation:
  • RB is the largest RB (resource block) number c(i)
  • Nut (L« s / 2j + l)- (2 ⁇ ] ID SCK) s is the time slot number,
  • ⁇ ⁇ is the ID of the scrambling sequence, which takes a value of 0 or 1.
  • Multiusers-MIMO Multi-user MIMO
  • MIMO Multiple Input Multiple Output
  • Multiple Input Multiple Output UE can have two different DMRS port configurations and two different Plus Sequence IDs (SCID:
  • Scrambling ID, scrambling ID configuration, so it can support up to 4 UEs based on
  • the DMRS is used for the detection of the dedicated control channel, only a fixed DMRS port and a scrambling sequence can be used, and multiple users are not allowed to use the orthogonal DMRS for multiplexing. It limits the size of the dedicated control channel.
  • some resources are separated from the PDSCH for transmission control signaling as a UE-specific control channel, and the UE-specific control channel can be demodulated based on DMRS, and in order to support larger capacity, multiple users are allowed to be reused.
  • the same dedicated control channel resources are transmitted using different DMRS ports.
  • a demodulation reference signal configuration indication scheme of a downlink control channel, a control signaling transmission scheme on a downlink control channel, and a control signaling detection scheme on a downlink control channel are provided, and the UE exclusive control may be indicated dynamically or statically.
  • the DMRS port and the scrambling sequence used by the channel enable flexible multiplexing transmission between UEs.
  • FIG. 2 is a schematic flowchart of a method for implementing a DMRS configuration indication method of a downlink control channel of a base station. As shown in the figure, when the indication is performed on the base station side, the following steps may be included:
  • Step 201 The base station determines a DMRS port and/or a DMRS scrambling sequence used when transmitting control signaling on the dedicated control channel.
  • Step 202 The base station indicates the DMRS port and/or the DMRS scrambling sequence to the UE.
  • Step 301 The UE receives a base station about a DMRS port and/or An indication of the DMRS scrambling sequence, where the DMRS port and/or the DMRS scrambling sequence is a DMRS port and/or a DMRS scrambling sequence used by the base station to transmit control signaling on the dedicated control channel; Step 302, the UE according to the indication The DMRS port and/or DMRS scrambling sequence information detects control signaling transmitted on the dedicated control channel.
  • the terminal receives the indication of the base station to obtain information about the DMRS port and/or the DMRS scrambling sequence, for example, by using the transmitted PDCCH signaling or higher layer signaling;
  • the terminal detects the reception control information on the dedicated control channel according to the obtained DMRS port and/or DMRS scrambling sequence information.
  • the base station indicates to the UE the DMRS port and/or the DMRS scrambling sequence, and the UE receives an indication from the base station regarding the DMRS port and/or the DMRS scrambling sequence.
  • the base station indicates the DMRS port and/or the DMRS scrambling sequence to the UE, and/or the UE receives the indication of the DMRS port and/or the DMRS scrambling sequence, and may include one or a combination of the following:
  • the base station can indicate the DMRS port and/or the DMRS scrambling sequence to the UE through independent high layer signaling.
  • the UE receives an indication that the base station sends to the UE through independent high layer signaling.
  • the base station may indicate the information of the DMRS port and/or the DMRS scrambling sequence used by the terminal through independent high layer signaling.
  • the base station uses 1-bit high-level signaling to indicate whether the UE adopts port 7 or port 8; or uses 2-bit high-level signaling to indicate whether the UE adopts port 7 or port 8, and uses the scrambling sequence ID0 or the scrambling sequence ID1.
  • both the port and the scrambling sequence are parameters that can be indicated, but the most common is to indicate the port, that is, if only one bit indicates that only the port is indicated, if the two-bit indication can indicate both the port and the sequence.
  • the base station jointly encodes the information of the DMRS port and/or the DMRS scrambling sequence with the configuration information of other dedicated control channels, and then indicates the DMRS port and/or the DMRS scrambling sequence to the UE through high layer signaling. .
  • the UE receives the indication that the base station performs the joint configuration information, where the joint configuration information is configuration information obtained by jointly coding the multiple parameter configurations of the dedicated control channel, where the joint configuration information carries the DMRS port and/or Or the information of the DMRS scrambling sequence, where the joint configuration information is sent by the base station by using high layer signaling.
  • the joint configuration information is configuration information obtained by jointly coding the multiple parameter configurations of the dedicated control channel, where the joint configuration information carries the DMRS port and/or Or the information of the DMRS scrambling sequence, where the joint configuration information is sent by the base station by using high layer signaling.
  • the base station may jointly encode the information of the adopted DMRS port and/or the DMRS scrambling sequence with the configuration information of other dedicated control channels, and then indicate to the terminal through high layer signaling.
  • the configuration information of other dedicated control channels generally includes one or more of the following:
  • the base station uses 2-bit high-level signaling to indicate the interleaving mode and demodulation mode of the control channel, and the information of the DMRS port and/or the DMRS scrambling sequence used when demodulating with the DMRS.
  • the specific instructions can be as follows:
  • the PDCCH or higher layer signaling indicates.
  • the base station indicates the DMRS port and/or the DMRS scrambling sequence to the UE through independent PDCCH signaling.
  • the UE On the UE side, the UE receives an indication that the base station sends to the UE through independent PDCCH signaling.
  • the base station may independently indicate, by using PDCCH signaling, information about a DMRS port and/or sequence used by the terminal;
  • the base station uses 1-bit PDCCH signaling to indicate whether the UE adopts port 7 or port 8; or uses 2-bit PDCCH signaling to indicate whether the UE adopts port 7 or port 8, and uses scrambling sequence ID0 or scrambling sequence ID1.
  • the embodiment is independent of the above-mentioned independent high-level signaling, because there are two indication methods in the implementation, one is a signaling independent indication of the configuration of the DMRS, and the other is to indicate the indication. Co-coding with other indications is indicated by a signaling, which is a different implementation, "independent, that is, to emphasize the difference between the two.
  • the base station jointly encodes the information of the DMRS port and/or the DMRS scrambling sequence with the configuration information of other dedicated control channels, and then indicates the DMRS port and/or the DMRS scrambling sequence to the UE through PDCCH signaling. .
  • the UE receives the indication that the base station performs the joint configuration information, where the joint configuration information is configuration information obtained by jointly coding the multiple parameter configurations of the dedicated control channel, where the joint configuration information carries the DMRS port and/or Or the information of the DMRS scrambling sequence, where the joint configuration information is sent by the base station by using PDCCH signaling.
  • the joint configuration information is configuration information obtained by jointly coding the multiple parameter configurations of the dedicated control channel, where the joint configuration information carries the DMRS port and/or Or the information of the DMRS scrambling sequence, where the joint configuration information is sent by the base station by using PDCCH signaling.
  • the base station may jointly encode the information of the adopted DMRS port and/or the DMRS scrambling sequence together with the configuration information of other dedicated control channels, and then indicate to the terminal through the PDCCH signaling.
  • the configuration information of other dedicated control channels generally includes one or more of the following: 1) signaling for indicating a control channel used by the terminal;
  • the base station uses 2-bit PDCCH signaling to indicate the control channel used, and the demodulation mode of the control channel, and the information of the DMRS port and/or DMRS scrambling sequence used for demodulation with DMRS.
  • the specific instructions can be as follows:
  • indication contents of different indication fields in the table may be exchanged according to needs.
  • the content of this table is only used to teach the person skilled in the art how to implement the invention, but it does not mean that only the table can be used, and the implementation process can be determined according to practical needs.
  • Other information such as the interleaving mode of the dedicated control channel can be indicated by higher layer signaling.
  • FIG. 4 is a schematic flowchart of a method for transmitting a DMRS signal on a downlink control channel of a base station side in an agreed mode. As shown in the figure, when transmitting on the base station side, the following steps may be included:
  • Step 401 The eNB determines, according to a preset rule, a DMRS port and/or a DMRS scrambling sequence used to transmit control signaling on the dedicated control channel, where the preset rule is consistent with a rule for detecting control signaling on the UE.
  • Step 402 The base station transmits the DMRS signal on the dedicated control channel according to the determined DMRS port and/or the DMRS scrambling sequence.
  • FIG. 5 is a schematic flowchart of a method for detecting control signaling on a downlink control channel of a UE in an agreed mode, as shown in the figure, correspondingly, when detecting on the UE side, Next steps:
  • Step 501 The UE determines, according to a preset rule, a DMRS port and/or a DMRS scrambling sequence used when detecting control signaling on the dedicated control channel, where the preset rule and the base station determine to transmit control signaling on the dedicated control channel.
  • the rules of the adopted DMRS port and/or DMRS scrambling sequence are consistent;
  • Step 502 The UE detects, according to the determined DMRS port and/or the DMRS scrambling sequence, control signaling transmitted on the dedicated control channel.
  • the terminal obtains the DMRS port and/or the DMRS scrambling sequence information according to the agreed preset rule;
  • the terminal detects the reception control information on the dedicated control channel according to the obtained DMRS port and/or DMRS scrambling sequence information.
  • the terminal and the base station determine the information of the DMRS port and/or the DMRS scrambling sequence used by the terminal and the base station without additional signaling indication. For example, bind the DMRS configuration to a UE-specific system parameter of the terminal.
  • RNTI Radio Network Temporary
  • the DMRS configuration is obtained based on the RNTI of the terminal. For example, if the terminal with an RNTI is an odd number, the port is used for DMRS transmission, and for the terminal with an even RNTI, the port 8 is used for DMRS transmission. .
  • the embodiment of the present invention further provides a base station and a user equipment, the principle of solving the problem by these devices, the demodulation reference signal configuration indication method of the downlink control channel, the control signaling transmission method on the downlink control channel, and the downlink.
  • the detection methods of the control signaling on the control channel are similar. Therefore, the implementation of these devices can be referred to the implementation of the method, and the repeated description will not be repeated.
  • FIG. 6 is a schematic structural diagram of a base station.
  • the base station may include: a determining module 601, configured to determine a DMRS port and/or a DMRS scrambling sequence used when transmitting control signaling on a dedicated control channel;
  • the indication module 602 is configured to indicate the DMRS port and/or the DMRS scrambling sequence to the UE.
  • the indication module may include one or a combination of the following units: a first indication unit, configured to indicate the DMRS port and/or the DMRS scrambling sequence to the UE by using independent high layer signaling;
  • a second indication unit configured to indicate, by the independent PDCCH signaling, the DMRS port and/or the DMRS scrambling sequence to the UE;
  • a third indicating unit configured to jointly encode the information of the DMRS port and/or the DMRS scrambling sequence together with the configuration information of the other dedicated control channels, and indicate the DMRS port and/or the DMRS scrambling sequence to the UE by using the high layer signaling ;
  • a fourth indication unit configured to jointly encode the information of the DMRS port and/or the DMRS scrambling sequence together with the configuration information of the other dedicated control channels, and indicate the DMRS port and/or the DMRS scrambling sequence to the UE by using PDCCH signaling.
  • FIG. 7 is a schematic structural diagram of a user equipment.
  • the UE may include: a receiving module 701, configured to receive, by the base station, an indication about a DMRS port and/or a DMRS scrambling sequence, the DMRS port and/or DMRS scrambling The sequence is a DMRS port and/or a DMRS scrambling sequence used by the base station to transmit control signaling on the dedicated control channel;
  • the detecting module 702 is configured to detect, according to the DMRS port and/or the DMRS scrambling sequence information in the indication, the control signaling transmitted on the dedicated control channel.
  • the receiving module may include one or a combination of the following units: a first receiving unit, configured to receive an indication sent by the base station to the UE by using independent high-layer signaling;
  • a second receiving unit configured to receive, by the base station, an indication sent by the base station to the UE by using independent PDCCH signaling
  • a third receiving unit configured to receive an indication that the base station performs the joint configuration information, where the joint configuration information is configuration information obtained by jointly coding the multiple parameter configurations of the dedicated control channel, where the joint configuration information carries the DMRS port. And/or information of the DMRS scrambling sequence, where the joint configuration information is sent by the base station by using high layer signaling;
  • a fourth receiving unit configured to receive, by the base station, an indication by using the joint configuration information, where the joint configuration information is obtained by jointly coding multiple parameter configurations of the dedicated control channel
  • the configuration information, where the joint configuration information carries information of a DMRS port and/or a DMRS scrambling sequence, where the joint configuration information is sent by the base station by using PDCCH signaling.
  • FIG. 8 is a schematic diagram of a structure of a base station.
  • the base station may include: a determining module 801, configured to determine, according to a preset rule, a DMRS port and/or a DMRS scrambling used when transmitting control signaling on a dedicated control channel. a sequence, the preset rule being consistent with a rule for detecting control signaling on the UE;
  • the transmission module 802 is configured to transmit the DMRS signal on the dedicated control channel according to the determined DMRS port and/or the DMRS scrambling sequence.
  • FIG. 9 is a schematic diagram of a structure of a user equipment.
  • the UE may include: a determining module 901, configured to determine, according to a preset rule, a DMRS port and/or a DMRS used to detect control signaling on a dedicated control channel. a scheduling sequence, the preset rule being consistent with a rule of the DMRS port and/or the DMRS scrambling sequence used by the base station to determine that the control signaling is transmitted on the dedicated control channel;
  • the detecting module 902 is configured to detect, according to the determined DMRS port and/or the DMRS scrambling sequence, control signaling transmitted on the dedicated control channel.
  • the base station may indicate the DMRS port and/or the DMRS scrambling sequence to the UE, or the base station and the UE determine the DMRS port and/or the DMRS scrambling according to the preset rule.
  • the sequence therefore, the UE no longer needs to demodulate using only a fixed DMRS port and a scrambling sequence, and thus can support multiple users to multiplex the same dedicated control channel, thereby increasing the capacity of the control channel.
  • the multiplexed transmission between the UEs can be flexibly performed.
  • the DMRS configuration may be independently indicated by using the high layer signaling; the DMRS configuration information may be jointly coded with other configuration information, and indicated by the high layer signaling; DMRS configuration; DMRS configuration information can be jointly encoded with other configuration information through PDCCH
  • the signaling indicates that the terminal can determine the DMRS configuration according to the rules agreed with the base station. It is obvious that the technical solution provided by the embodiment of the present invention can support multiple users to multiplex the same dedicated control channel, thereby increasing the capacity of the control channel; and, the signaling overhead is small and the configuration is flexible.
  • 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

本发明公开了一种解调参考信号配置指示、传输、控制信令的检测方法及设备,包括:基站向用户设备指示在专属控制信道上传输控制信令时所采用的解调参考信号端口和/或解调参考信号加扰序列,或者按预设规则采用解调参考信号端口和/或解调参考信号加扰序列;用户设备按指示或者预设规则获知的解调参考信号端口和/或解调参考信号加扰序列对专属控制信道上传输的控制信令进行检测。本发明可以支持多个用户复用相同的专用控制信道,增加控制信道的容量。

Description

解调参考信号配置指示、 传输、 控制信令检测方法及设备 本申请要求于 2011 年 3 月 29 日提交中国专利局, 申请号为 201110076764.5, 发明名称为 "解调参考信号配置指示、 传输、 控制 信令检测方法及设备"的中国专利申请的优先权, 其全部内容通过引 用结合在本申请中。 技术领域
本发明涉及无线通信领域,特别涉及一种下行控制信道的解调参 考信号配置指示方法及设备、下行控制信道上解调参考信号的传输方 法及设备、 下行控制信道上控制信令的检测方法及设备。 背景技术
在目前的 LTE ( Long Term Evolution,长期演进)和 LTE-A ( Long Term Evolution- Advanced, 长期演进升级)系统中,控制信道 PDCCH
( physical downlink control channel, 物理下行控制信道)只能在一个 子帧的前若干个符号传输, 用户通过在 PDCCH资源中进行盲检获得 其调度信息。 为了满足不断增长的调度信令需求, 需要考虑一些方法 对控制信道进行增强, 提高容量以支持更多的用户调度, 其中一种方 法便是类似 Relay (中继 ) 系统的控制信道设计方法。
图 1为 Relay系统的 PDCCH和 PDSCH( Physical Downlink Shared Channel, 物理下行链路共享信道)结构示意图, 图中 PCFICH为物 理控制格式指示信道 ( Physical Control Format Indicator Channel )。 Relay 系统的 PDCCH 和 PDSCH 资源结构图如图 1 所示, 其中 R-PDCCH(中继 -PDCCH )用于基站向 Relay传输控制信令, R-PDSCH
(中继 -PDSCH )用于基站向 Relay传输数据。 Relay接收到控制信令 解调出 R-PDSCH后,再用 PDCCH和 PDSCH向 UE( User Equipment, 用户设备)传输控制信令和数据。 其中 R-PDCCH和 R-PDSCH都是 占用原本用于传输 PDSCH的资源。 在 R-PDCCH 中, 如果采用交织的方法, 则只能采用 CRS ( Cell-specific reference signals, 小区专属导频信号 )解调; 如果采用 非交织的方式, 则 Relay可以用 CRS也可以用 DMRS ( demodulation reference signal, 解调参考信号)进行解调, 由基站通过高层信令配 置其解调的方法。 当用 DMRS进行解调时, 只能采用端口 7和加扰 ID=0的加扰序列, 不支持多个用户采用正交 DMRS进行复用传输。 其中 R-PDCCH的第一个时隙用于传输下行调度信息, 第二个时隙用 于传输上行调度信息。 基站通过高层信令通知每个 Relay其控制信令 所占用的物理资源, 从而 Relay在相应的资源上进行盲检获得其控制 信息。由于此时不同时传输 PDCCH,所以 Relay只需要盲检 R-PDCCH 即可。
为了在非 Relay系统中增加控制信道的容量, 可以将上述方案也 引入到非 Relay系统中。 具体的, 基站可以在 PDSCH中分离一部分 资源用于给 UE传输控制信令, 即 UE专属的控制信道, 对于 UE来 说则同时存在公共的控制信道和专属的控制信道。基站可以通过高层 信令通知 UE其专属控制信道所占用的物理资源, 以及所采用的解调 方式。 UE首先需要在公共搜索空间盲检出公共的控制信息, 再通过 公共控制信道或者专属控制信道盲检出自己的控制信息。
现有技术的不足在于: 按照目前的方案, 如果采用 DMRS对专 属控制信道进行解调, 则只能采用固定的 DMRS端口和加扰序列, 因此, 在现有技术中并不支持多个用户利用正交的 DMRS进行复用, 从而限制了专属控制信道的容量大小。 发明内容
本发明所解决的技术问题在于提供了一种下行控制信道的解调 参考信号配置指示方法及设备、下行控制信道上解调参考信号的传输 方法及设备、 下行控制信道上控制信令的检测方法及设备, 用以在增 加了 UE专属的控制信道后,支持多个用户复用相同的专属控制信道。 本发明实施例中提供了一种下行控制信道的 DMRS配置指示方 法, 包括如下步骤:
基站确定在专属控制信道上传输控制信令时所采用的 DMRS端 口和 /或 DMRS加扰序列;
基站向用户设备 UE指示所述 DMRS端口和 /或 DMRS加扰序列。 本发明实施例中提供了一种下行控制信道上控制信令的检测方 法, 包括如下步骤:
UE接收基站关于 DMRS端口和 /或 DMRS加扰序列的指示, 所 述 DMRS端口和 /或 DMRS加扰序列是基站在专属控制信道上传输控 制信令时所采用的 DMRS端口和 /或 DMRS加扰序列;
UE根据指示中的 DMRS端口和 /或 DMRS加扰序列信息对专属 控制信道上传输的控制信令进行检测。
本发明实施例中提供了一种下行控制信道上 DMRS信号的传输 方法, 包括如下步骤:
基站按预设规则确定在专属控制信道上传输控制信令时所采用 的 DMRS端口和 /或 DMRS加扰序列, 所述预设规则与 UE上用于检 测控制信令的规则一致;
基站根据确定的 DMRS端口和 /或 DMRS加扰序列在专属控制信 道上传输 DMRS信号。
本发明实施例中提供了一种下行控制信道上控制信令的检测方 法, 包括如下步骤:
UE按预设规则确定在专属控制信道上检测控制信令时所采用的 DMRS端口和 /或 DMRS加扰序列, 所述预设规则与基站确定在专属 控制信道上传输控制信令时所采用的 DMRS端口和 /或 DMRS加扰序 列的规则一致;
UE根据确定的 DMRS端口和 /或 DMRS加扰序列对专属控制信 道上传输的控制信令进行检测。
本发明实施例中提供了一种基站, 包括:
确定模块,用于确定在专属控制信道上传输控制信令时所采用的 DMRS端口和 /或 DMRS加扰序列;
指示模块, 用于向 UE指示所述 DMRS端口和 /或 DMRS加扰序 列。
本发明实施例中提供了一种用户设备, 包括:
接收模块,用于接收基站关于 DMRS端口和 /或 DMRS加扰序列 的指示,所述 DMRS端口和 /或 DMRS加扰序列是基站在专属控制信 道上传输控制信令时所采用的 DMRS端口和 /或 DMRS加扰序列; 检测模块,用于根据指示中的 DMRS端口和 /或 DMRS加扰序列 信息对专属控制信道上传输的控制信令进行检测。
本发明实施例中提供了一种基站, 包括:
确定模块,用于按预设规则确定在专属控制信道上传输控制信令 时所采用的 DMRS端口和 /或 DMRS加扰序列, 所述预设规则与 UE 上用于检测控制信令的规则一致;
传输模块,用于根据确定的 DMRS端口和 /或 DMRS加扰序列在 专属控制信道上传输 DMRS信号。
本发明实施例中提供了一种用户设备, 包括:
确定模块,用于按预设规则确定在专属控制信道上检测控制信令 时所采用的 DMRS端口和 /或 DMRS加扰序列,所述预设规则与基站 确定在专属控制信道上传输控制信令时所采用的 DMRS 端口和 /或 DMRS加扰序列的规则一致;
检测模块,用于根据确定的 DMRS端口和 /或 DMRS加扰序列对 专属控制信道上传输的控制信令进行检测。
本发明有益效果如下:
在本发明实施例提供的技术方案中, 由于基站会向 UE 指示 DMRS端口和 /或 DMRS加扰序列, 或者基站与 UE按照预设规则确 定 DMRS端口和 /或 DMRS加扰序列, 因此, UE不再需要只采用固 定的 DMRS端口和加扰序列来检测控制信令, 所以可以支持多个用 户复用相同的专用控制信道, 从而增加控制信道的容量。 附图说明
图 1为背景技术中 Relay系统的 PDCCH和 PDSCH结构示意图; 图 2为本发明实施例中基站侧下行控制信道的 DMRS配置指示 方法实施流程示意图;
图 3为本发明实施例中 UE侧下行控制信道上控制信令的检测方 法实施流程示意图;
图 4 为本发明实施例中约定方式下基站侧下行控制信道上 DMRS信号的传输方法实施流程示意图;
图 5为本发明实施例中约定方式下 UE侧下行控制信道上控制信 令的检测方法实施流程示意图;
图 6为本发明实施例中基站一结构示意图;
图 7为本发明实施例中用户设备一结构示意图;
图 8为本发明实施例中基站二结构示意图;
图 9为本发明实施例中用户设备二结构示意图。
具体实施方式
发明人在发明过程中注意到:
LTE-A系统中, 下行 DMRS序列由以下式子生成:
Figure imgf000007_0001
Q . J2A^DL - 1 normal cyclic prefix
m =
0 … J 6A^DL - 1 extended cyclic prefix
¾rma¾ DL
其中 RB 为下行最大的 RB ( resource block, 资源块)数 c(i)
量, 伪随机序列 、 在用以下式子进行初始化:
cell
nut (L«s / 2j + l)- (2^] ID SCK) s为时隙编号,
Figure imgf000008_0001
为其服务小区 ID (标识), "^Ιϋ是加 扰序列的 ID, 取值为 0或者 1。
为了支持 MU-MIMO ( MultipleUsers-MIMO, 多用户 MIMO;
MIMO: Multiple Input Multiple Output, 多入多出)传输, UE可以有 两种不同的 DMRS 端口配置和两种不同的加 4尤序列 ID ( SCID:
Scrambling ID, 加扰标识) 配置, 因此可以最多支持 4个 UE基于
DMRS的复用传输。 此时, 最多可以有四种 DMRS配置, 分别为:
1、 DMRS配置 1: 天线端口 =7, SCID=0;
2、 DMRS配置 2: 天线端口 =8, SCID=0;
3、 DMRS配置 3: 天线端口 =7, SCID=1;
4、 DMRS配置 4: 天线端口 =8, SCID=1。
然而, 按照目前的现有技术中的方案, 如果利用 DMRS进行专 属控制信道的检测, 则只能采用固定的 DMRS端口和加扰序列, 并 因不支持多个用户利用正交的 DMRS进行复用而限制了专属控制信 道的容量大小。
鉴于此, 在从 PDSCH中分离出部分资源用于传输控制信令作为 UE专属控制信道, 并且 UE专属控制信道可以基于 DMRS进行解调 时, 而且为了支持更大的容量, 允许多个用户复用相同的专属控制信 道资源, 采用不同的 DMRS端口进行传输。 本发明实施例中提供了 下行控制信道的解调参考信号配置指示方案、下行控制信道上控制信 令的传输方案、 下行控制信道上控制信令的检测方案, 可以动态或者 静态的指示 UE专属控制信道所用的 DMRS端口和加扰序列,从而实 现灵活的进行 UE间的复用传输。
下面结合附图对本发明的具体实施方式进行说明。
在说明过程中, 将分别从 UE与基站侧的实施进行说明, 并同时 对二者的配合实施进行说明, 但这并不意味着二者必须配合实施, 实 际上, 当 UE与基站分开实施时, 其也解决了分别在 UE侧、 基站侧 上存在的问题, 只是二者结合使用时, 会获得更好的技术效果。 图 2为基站侧下行控制信道的 DMRS配置指示方法实施流程示 意图, 如图所示, 在基站侧进行指示时可以包括如下步骤:
步骤 201、 基站确定在专属控制信道上传输控制信令时所采用的 DMRS端口和 /或 DMRS加扰序列;
步骤 202、 基站向 UE指示所述 DMRS端口和 /或 DMRS加扰序 列。
图 3为 UE侧下行控制信道上控制信令的检测方法实施流程示意 图, 如图所示, 相应的, 在 UE侧进行检测时可以包括如下步骤: 步骤 301、 UE接收基站关于 DMRS端口和 /或 DMRS加扰序列 的指示,所述 DMRS端口和 /或 DMRS加扰序列是基站在专属控制信 道上传输控制信令时所采用的 DMRS端口和 /或 DMRS加扰序列; 步骤 302、 UE根据指示中的 DMRS端口和 /或 DMRS加扰序列 信息对专属控制信道上传输的控制信令进行检测。
实施中, 首先, 终端接收基站的指示来获得 DMRS 端口和 /或 DMRS加扰序列的信息,例如通过发送的 PDCCH信令或者高层信令 来获得;
其次, 终端根据获得的 DMRS端口和 /或 DMRS加扰序列信息, 在专用控制信道上检测接收控制信息。
下面对基站向 UE指示所述 DMRS端口和 /或 DMRS加扰序列, 以及 UE接收基站关于 DMRS端口和 /或 DMRS加扰序列的指示的具 体实施方式进行说明。
具体的,基站向 UE指示所述 DMRS端口和 /或 DMRS加扰序列, 和 /或 UE接收基站关于 DMRS端口和 /或 DMRS加扰序列的指示,可 以包括如下方式之一或者其组合:
1、 在基站侧, 基站可以通过独立的高层信令向 UE指示所述 DMRS端口和 /或 DMRS加扰序列。
在 UE侧, UE接收基站通过独立的高层信令向 UE发送的指示。 具体的,基站可以通过独立的高层信令指示终端所采用的 DMRS 端口和 /或 DMRS加扰序列的信息。 例如:基站用 1比特的高层信令指示 UE采用端口 7还是端口 8; 或者用 2比特的高层信令指示 UE采用端口 7还是端口 8, 以及采用 加扰序列 ID0还是加扰序列 ID1。
实施中, 端口和加扰序列都是可以指示的参数, 但最常见的是指 示端口, 也就是说如果只有一比特指示一般只指示端口, 如果两比特 指示可以同时指示端口和序列。
2、 在基站侧, 基站将 DMRS端口和 /或 DMRS加扰序列的信息 与其他专属控制信道的配置信息一起联合编码后, 通过高层信令向 UE指示所述 DMRS端口和 /或 DMRS加扰序列。
在 UE侧, UE接收基站通过联合配置信息进行的指示, 所述联 合配置信息是所述专属控制信道多个参数配置联合编码后得到的配 置信息,所述联合配置信息中携带了 DMRS端口和 /或 DMRS加扰序 列的信息, 所述联合配置信息是基站通过高层信令发送的。
具体的,基站可以将所采用的 DMRS端口和 /或 DMRS加扰序列 的信息与其他专属控制信道的配置信息一起联合编码,然后通过高层 信令指示给终端。
其他专属控制信道的配置信息一般包括以下的一项或者多项:
1 )用于指示终端所用的控制信道的信令;
2 )用于指示专属控制信道中的交织方式的信令;
3 )用于指示专属控制信道解调方式的信令。
例如:基站用 2比特的高层信令指示控制信道的交织方式和解调 方式, 以及用 DMRS解调时所用的 DMRS端口和 /或 DMRS加扰序 列的信息。 具体的指示内容可以如下表所示:
Figure imgf000010_0001
需要说明的是。表格中不同指示域的指示内容可以根据需要进行 调换, 本表格内容仅用于教导本领域技术人员具体如何实施本发明, 但不意味仅能使用本表,实施过程中可以结合实践需要来确定相应的 表格取值以及对应关系。对于用户所用的控制信道, 则可以通过其他
PDCCH或者高层信令进行指示。
3、在基站侧,基站通过独立的 PDCCH信令向 UE指示所述 DMRS 端口和 /或 DMRS加扰序列。
在 UE侧, UE接收基站通过独立的 PDCCH信令向 UE发送的指 示。
具体的, 基站可以通过 PDCCH 信令独立指示终端所采用的 DMRS端口和 /或序列的信息;
例如: 基站用 1比特的 PDCCH信令指示 UE采用端口 7还是端 口 8; 或者用 2比特的 PDCCH信令指示 UE采用端口 7还是端口 8, 以及采用加扰序列 ID0还是加扰序列 ID1。
实施中, 本实施例与上述使用独立的高层信令中的 "独立,,是因 为实施中可以有两种指示方法, 一种是一条信令独立指示 DMRS 的 配置,另一种是把这个指示和其他指示信息进行联合编码用一条信令 指示, 这是不同的实施方式, "独立,,也即是用来强调二者的不同的。
4、 在基站侧, 基站将 DMRS端口和 /或 DMRS加扰序列的信息 与其他专属控制信道的配置信息一起联合编码后, 通过 PDCCH信令 向 UE指示所述 DMRS端口和 /或 DMRS加扰序列。
在 UE侧, UE接收基站通过联合配置信息进行的指示, 所述联 合配置信息是所述专属控制信道多个参数配置联合编码后得到的配 置信息,所述联合配置信息中携带了 DMRS端口和 /或 DMRS加扰序 列的信息, 所述联合配置信息是基站通过 PDCCH信令发送的。
具体的,基站可以将所采用的 DMRS端口和 /或 DMRS加扰序列 的信息与其他专属控制信道的配置信息一起联合编码, 然后通过 PDCCH信令指示给终端。
其他专属控制信道的配置信息一般包括以下的一项或者多项: 1 )用于指示终端所用的控制信道的信令;
2 )用于指示专属控制信道中的交织方式的信令;
3 )用于指示专属控制信道解调方式的信令;
例如: 基站用 2比特的 PDCCH信令指示所用的控制信道, 以及 控制信道的解调方式, 以及用 DMRS解调时所用的 DMRS端口和 / 或 DMRS加扰序列的信息。 具体的指示内容可以如下表所示:
Figure imgf000012_0001
需要说明的是。表格中不同指示域的指示内容可以根据需要进行 调换, 本表格内容仅用于教导本领域技术人员具体如何实施本发明, 但不意味仅能使用本表,实施过程中可以结合实践需要来确定相应的 表格取值以及对应关系。 对于专属控制信道的交织方式等其他信息, 可以通过高层信令进行指示。
本发明实施例中还提供了一种约定的方式, 下面进行说明。
图 4为约定方式下基站侧下行控制信道上 DMRS信号的传输方 法实施流程示意图, 如图所示, 在基站侧进行传输时可以包括如下步 骤:
步骤 401、 基站按预设规则确定在专属控制信道上传输控制信令 时所采用的 DMRS端口和 /或 DMRS加扰序列, 所述预设规则与 UE 上用于检测控制信令的规则一致;
步骤 402、 基站根据确定的 DMRS端口和 /或 DMRS加扰序列在 专属控制信道上传输 DMRS信号。
图 5为约定方式下 UE侧下行控制信道上控制信令的检测方法实 施流程示意图, 如图所示, 相应的, 在 UE侧进行检测时可以包括如 下步骤:
步骤 501、 UE按预设规则确定在专属控制信道上检测控制信令 时所采用的 DMRS端口和 /或 DMRS加扰序列,所述预设规则与基站 确定在专属控制信道上传输控制信令时所采用的 DMRS 端口和 /或 DMRS加扰序列的规则一致;
步骤 502、 UE根据确定的 DMRS端口和 /或 DMRS加扰序列对 专属控制信道上传输的控制信令进行检测。
实施中, 首先, 终端根据约定的预设规则获得 DMRS端口和 /或 DMRS加扰序列信息;
其次, 终端根据获得的 DMRS端口和 /或 DMRS加扰序列信息, 在专用控制信道上检测接收控制信息。
具体的, 终端和基站照约定的规则确定其采用的 DMRS端口和 / 或 DMRS加扰序列的信息,而不需要额外的信令指示。比如,把 DMRS 配置和终端的某个 UE专属系统参数绑定。
例如: 预先约定好终端的 RNTI ( Radio Network Temporary
Identity, 无线网络临时识别 )和 DMRS配置的映射关系, 根据终端 的 RNTI获得其 DMRS的配置,比如对于 RNTI为奇数的终端则采用 port7进行 DMRS传输, 对于 RNTI为偶数的终端则采用 port8进行 DMRS传输。
基于同一发明构思, 本发明实施例中还提供了基站、 用户设备, 由于这些设备解决问题的原理与下行控制信道的解调参考信号配置 指示方法、 下行控制信道上控制信令的传输方法、 下行控制信道上控 制信令的检测方法相似, 因此这些设备的实施可以参见方法的实施, 重复之处不再赘述。
图 6为基站一结构示意图, 如图所示, 基站中可以包括: 确定模块 601 , 用于确定在专属控制信道上传输控制信令时所采 用的 DMRS端口和 /或 DMRS加扰序列;
指示模块 602, 用于向 UE指示所述 DMRS端口和 /或 DMRS加 扰序列。 实施中, 指示模块中可以包括如下单元之一或者其组合: 第一指示单元,用于通过独立的高层信令向 UE指示所述 DMRS 端口和 /或 DMRS加扰序列;
第二指示单元, 用于通过独立的 PDCCH信令向 UE指示所述 DMRS端口和 /或 DMRS加扰序列;
第三指示单元,用于将 DMRS端口和 /或 DMRS加扰序列的信息 与其他专属控制信道的配置信息一起联合编码后, 通过高层信令向 UE指示所述 DMRS端口和 /或 DMRS加扰序列;
第四指示单元,用于将 DMRS端口和 /或 DMRS加扰序列的信息 与其他专属控制信道的配置信息一起联合编码后, 通过 PDCCH信令 向 UE指示所述 DMRS端口和 /或 DMRS加扰序列。
图 7为用户设备一结构示意图, 如图所示, UE中可以包括: 接收模块 701 , 用于接收基站关于 DMRS端口和 /或 DMRS加扰 序列的指示,所述 DMRS端口和 /或 DMRS加扰序列是基站在专属控 制信道上传输控制信令时所采用的 DMRS端口和 /或 DMRS加扰序 列;
检测模块 702, 用于根据指示中的 DMRS端口和 /或 DMRS加扰 序列信息对专属控制信道上传输的控制信令进行检测。
实施中, 接收模块中可以包括如下单元之一或者其组合: 第一接收单元, 用于接收基站通过独立的高层信令向 UE发送的 指示;
第二接收单元, 用于接收基站通过独立的 PDCCH信令向 UE发 送的指示;
第三接收单元, 用于接收基站通过联合配置信息进行的指示, 所 述联合配置信息是所述专属控制信道多个参数配置联合编码后得到 的配置信息,所述联合配置信息中携带了 DMRS端口和 /或 DMRS加 扰序列的信息, 所述联合配置信息是基站通过高层信令发送的;
第四接收单元, 用于接收基站通过联合配置信息进行的指示, 所 述联合配置信息是所述专属控制信道多个参数配置联合编码后得到 的配置信息,所述联合配置信息中携带了 DMRS端口和 /或 DMRS加 扰序列的信息, 所述联合配置信息是基站通过 PDCCH信令发送的。
图 8为基站二结构示意图, 如图所示, 基站中可以包括: 确定模块 801 , 用于按预设规则确定在专属控制信道上传输控制 信令时所采用的 DMRS端口和 /或 DMRS加扰序列,所述预设规则与 UE上用于检测控制信令的规则一致;
传输模块 802, 用于根据确定的 DMRS端口和 /或 DMRS加扰序 列在专属控制信道上传输 DMRS信号。
图 9为用户设备二结构示意图, 如图所示, UE中可以包括: 确定模块 901 , 用于按预设规则确定在专属控制信道上检测控制 信令时所采用的 DMRS端口和 /或 DMRS加扰序列,所述预设规则与 基站确定在专属控制信道上传输控制信令时所采用的 DMRS端口和 / 或 DMRS加扰序列的规则一致;
检测模块 902, 用于根据确定的 DMRS端口和 /或 DMRS加扰序 列对专属控制信道上传输的控制信令进行检测。
为了描述的方便,以上所述装置的各部分以功能分为各种模块或 单元分别描述。 当然, 在实施本发明时可以把各模块或单元的功能在 同一个或多个软件或硬件中实现。
由上述实施例可知, 在本发明实施例提供的技术方案中, 由于基 站会向 UE指示 DMRS端口和 /或 DMRS加扰序列, 或者基站与 UE 按照预设规则确定 DMRS端口和 /或 DMRS加扰序列, 因此, UE不 再需要只采用固定的 DMRS端口和加扰序列来解调, 因此可以支持 多个用户复用相同的专用控制信道, 从而增加控制信道的容量。
进一步的, 由于可以动态或者静态的指示 UE专属控制信道所用 的 DMRS端口和加扰序列, 所以能够灵活的进行 UE间的复用传输。
具体的, 在本发明实施例提供的技术方案中, 可以利用高层信令 独立指示 DMRS配置; 可以将 DMRS配置信息与其他配置信息联合 编码,通过高层信令进行指示;可以利用 PDCCH信令独立指示 DMRS 配置;可以将 DMRS配置信息与其他配置信息联合编码,通过 PDCCH 信令进行指示; 终端可以按照和基站约定好的规则确定 DMRS配置。 显然,本发明实施例提供的技术方案可以支持多个用户复用相同 的专用控制信道, 从而增加控制信道的容量; 并且, 信令开销较小, 配置灵活。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系 统、 或计算机程序产品。 因此, 本发明可采用完全硬件实施例、 完全 软件实施例、 或结合软件和硬件方面的实施例的形式。 而且, 本发明 可采用在一个或多个其中包含有计算机可用程序代码的计算机可用 存储介质 (包括但不限于磁盘存储器、 CD-ROM、 光学存储器等)上 实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算 机程序产品的流程图和 /或方框图来描述的。应理解可由计算机程序 指令实现流程图和 /或方框图中的每一流程和 /或方框、以及流程图 和 /或方框图中的流程和 /或方框的结合。可提供这些计算机程序指 令到通用计算机、 专用计算机、嵌入式处理机或其他可编程数据处理 设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处 理设备的处理器执行的指令产生用于实现在流程图一个流程或多个 流程和 /或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数 据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计 算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实 现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框 中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理 设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产 生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令 提供用于实现在流程图一个流程或多个流程和 /或方框图一个方框 或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦 得知了基本创造性概念, 则可对这些实施例作出另外的变更和修改。 所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围 的所有变更和爹改。 脱离本发明的精神和范围。 这样, 倘若本发明的这些修改和变型属于 本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些 改动和变型在内。

Claims

权利要求
1、 一种下行控制信道的解调参考信号 DMRS配置指示方法, 其 特征在于, 包括如下步骤:
基站确定在专属控制信道上传输控制信令时所采用的 DMRS端 口和 /或 DMRS加扰序列;
基站向用户设备 UE指示所述 DMRS端口和 /或 DMRS加扰序列。
2、 如权利要求 1所述的方法, 其特征在于, 基站向 UE指示所 述 DMRS端口和 /或 DMRS加扰序列,包括如下方式之一或者其组合: 基站通过独立的高层信令向 UE 指示所述 DMRS 端口和 /或 DMRS加扰序列;
基站通过独立的物理下行控制信道 PDCCH信令向 UE指示所述 DMRS端口和 /或 DMRS加扰序列;
基站将 DMRS端口和 /或 DMRS加扰序列的信息与其他专属控制 信道的配置信息一起联合编码后, 通过高层信令向 UE 指示所述 DMRS端口和 /或 DMRS加扰序列;
基站将 DMRS端口和 /或 DMRS加扰序列的信息与其他专属控制 信道的配置信息一起联合编码后, 通过 PDCCH信令向 UE指示所述 DMRS端口和 /或 DMRS加扰序列。
3、 一种下行控制信道上控制信令的检测方法, 其特征在于, 包 括如下步骤:
UE接收基站关于 DMRS端口和 /或 DMRS加扰序列的指示, 所 述 DMRS端口和 /或 DMRS加扰序列是基站在专属控制信道上传输控 制信令时所采用的 DMRS端口和 /或 DMRS加扰序列;
UE根据指示中的 DMRS端口和 /或 DMRS加扰序列信息对专属 控制信道上传输的控制信令进行检测。
4、 如权利要求 3所述的方法, 其特征在于, UE接收基站关于 DMRS端口和 /或 DMRS加扰序列的指示, 包括如下方式之一或者其 组合:
UE接收基站通过独立的高层信令向 UE发送的指示;
UE接收基站通过独立的 PDCCH信令向 UE发送的指示; UE接收基站通过联合配置信息进行的指示, 所述联合配置信息 是所述专属控制信道多个参数配置联合编码后得到的配置信息,所述 联合配置信息中携带了 DMRS端口和 /或 DMRS加扰序列的信息,所 述联合配置信息是基站通过高层信令发送的;
UE接收基站通过联合配置信息进行的指示, 所述联合配置信息 是所述专属控制信道多个参数配置联合编码的配置信息,所述联合配 置信息中携带了 DMRS端口和 /或 DMRS加扰序列的信息,所述联合 配置信息是基站通过 PDCCH信令发送的。
5、 一种下行控制信道上 DMRS信号的传输方法, 其特征在于, 包括如下步骤:
基站按预设规则确定在专属控制信道上传输控制信令时所采用 的 DMRS端口和 /或 DMRS加扰序列, 所述预设规则与 UE上用于检 测控制信令的规则一致;
基站根据确定的 DMRS端口和 /或 DMRS加扰序列在专属控制信 道上传输 DMRS信号。
6、 一种下行控制信道上控制信令的检测方法, 其特征在于, 包 括如下步骤:
UE按预设规则确定在专属控制信道上检测控制信令时所采用的 DMRS端口和 /或 DMRS加扰序列, 所述预设规则与基站确定在专属 控制信道上传输控制信令时所采用的 DMRS端口和 /或 DMRS加扰序 列的规则一致;
UE根据确定的 DMRS端口和 /或 DMRS加扰序列对专属控制信 道上传输的控制信令进行检测。
7、 一种基站, 其特征在于, 包括:
确定模块,用于确定在专属控制信道上传输控制信令时所采用的 DMRS端口和 /或 DMRS加扰序列;
指示模块, 用于向 UE指示所述 DMRS端口和 /或 DMRS加扰序 列。
8、 如权利要求 7所述的基站, 其特征在于, 指示模块包括如下 单元之一或者其组合:
第一指示单元,用于通过独立的高层信令向 UE指示所述 DMRS 端口和 /或 DMRS加扰序列;
第二指示单元, 用于通过独立的 PDCCH信令向 UE指示所述 DMRS端口和 /或 DMRS加扰序列;
第三指示单元,用于将 DMRS端口和 /或 DMRS加扰序列的信息 与其他专属控制信道的配置信息一起联合编码后, 通过高层信令向 UE指示所述 DMRS端口和 /或 DMRS加扰序列;
第四指示单元,用于将 DMRS端口和 /或 DMRS加扰序列的信息 与其他专属控制信道的配置信息一起联合编码后, 通过 PDCCH信令 向 UE指示所述 DMRS端口和 /或 DMRS加扰序列。
9、 一种用户设备, 其特征在于, 包括:
接收模块,用于接收基站关于 DMRS端口和 /或 DMRS加扰序列 的指示,所述 DMRS端口和 /或 DMRS加扰序列是基站在专属控制信 道上传输控制信令时所采用的 DMRS端口和 /或 DMRS加扰序列; 检测模块,用于根据指示中的 DMRS端口和 /或 DMRS加扰序列 信息对专属控制信道上传输的控制信令进行检测。
10、 如权利要求 9所述的用户设备, 其特征在于, 接收模块包括 如下单元之一或者其组合:
第一接收单元, 用于接收基站通过独立的高层信令向 UE发送的 指示;
第二接收单元, 用于接收基站通过独立的 PDCCH信令向 UE发 送的指示;
第三接收单元, 用于接收基站通过联合配置信息进行的指示, 所 述联合配置信息是所述专属控制信道多个参数配置联合编码后得到 的配置信息,所述联合配置信息中携带了 DMRS端口和 /或 DMRS加 扰序列的信息, 所述联合配置信息是基站通过高层信令发送的; 第四接收单元, 用于接收基站通过联合配置信息进行的指示, 所 述联合配置信息是所述专属控制信道多个参数配置联合编码后得到 的配置信息,所述联合配置信息中携带了 DMRS端口和 /或 DMRS加 扰序列的信息, 所述联合配置信息是基站通过 PDCCH信令发送的。
11、 一种基站, 其特征在于, 包括:
确定模块,用于按预设规则确定在专属控制信道上传输控制信令 时所采用的 DMRS端口和 /或 DMRS加扰序列, 所述预设规则与 UE 上用于检测控制信令的规则一致;
传输模块,用于根据确定的 DMRS端口和 /或 DMRS加扰序列在 专属控制信道上传输 DMRS信号。
12、 一种用户设备, 其特征在于, 包括:
确定模块,用于按预设规则确定在专属控制信道上检测控制信令 时所采用的 DMRS端口和 /或 DMRS加扰序列,所述预设规则与基站 确定在专属控制信道上传输控制信令时所采用的 DMRS 端口和 /或 DMRS加扰序列的规则一致;
检测模块,用于根据确定的 DMRS端口和 /或 DMRS加扰序列对 专属控制信道上传输的控制信令进行检测。
PCT/CN2012/070071 2011-03-29 2012-01-05 解调参考信号配置指示、传输、控制信令检测方法及设备 WO2012129969A1 (zh)

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