WO2011137620A1 - Indication method and system for uplink demodulation reference signals - Google Patents

Indication method and system for uplink demodulation reference signals Download PDF

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Publication number
WO2011137620A1
WO2011137620A1 PCT/CN2010/077165 CN2010077165W WO2011137620A1 WO 2011137620 A1 WO2011137620 A1 WO 2011137620A1 CN 2010077165 W CN2010077165 W CN 2010077165W WO 2011137620 A1 WO2011137620 A1 WO 2011137620A1
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Prior art keywords
demodulation reference
reference signal
layer
indication information
user equipment
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PCT/CN2010/077165
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French (fr)
Chinese (zh)
Inventor
王瑜新
梁春丽
郝鹏
戴博
喻斌
朱鹏
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中兴通讯股份有限公司
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Publication of WO2011137620A1 publication Critical patent/WO2011137620A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space

Definitions

  • the present invention relates to the field of communications, and in particular to a method and system for indicating an uplink demodulation reference signal.
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • UE User Equipment
  • PUSCH Physical Uplink Shared Channel
  • the uplink scheduling information (Uplink Scheduling Information) of the PUSCH is sent by the base station to the target UE through a Physical Downlink Control Channel (PDCCH).
  • PDCCH Physical Downlink Control Channel
  • the uplink scheduling information includes: resource allocation, a modulation and coding scheme related to the physical uplink shared channel, and a cyclic shift (Cyclic Shift) of the Demodulation Reference Signal (DMRS).
  • DMRS Demodulation Reference Signal
  • the physical uplink shared channel is transmitted by a single antenna port.
  • a system frame (frame) contains 10 subframes, each of which contains 2 slots.
  • FIG. 1 is a schematic diagram of a cyclic prefix in a time slot according to the related art. As shown in FIG. 1, for a normal cyclic prefix (Normal CP), each time slot is composed of 6 data symbols and 1 demodulation reference signal; for extended cyclic prefix (Extended CP), each time slot consists of 5 data symbols and 1 demodulation reference signal.
  • Normal CP normal cyclic prefix
  • Extended CP extended cyclic prefix
  • the demodulation reference signal DM RS consists of a sequence in the frequency domain which is a cyclic shift of the reference signal sequence.
  • the reference signal sequence of the demodulation reference signal may implement a sequence hopping or a group hopping according to the configuration of the base station, which is also called a time slot.
  • the SGH way to jump. That is, according to the configuration of the base station, the demodulation reference signals of one user equipment in two time slots in one subframe are different, and vary with the time slot in one system frame according to a certain jump pattern.
  • 3 ⁇ 4 ⁇ is configured by the uplink scheduling information.
  • the uplink scheduling information is carried on the physical downlink control channel, with a certain downlink.
  • the Downlink Control Information Format (DCI format) is sent by the base station to the target user equipment.
  • DCI format Downlink Control Information Format
  • the downlink control information format is divided into the following types: DCI format 0, 1, 1A, 1B, 1C, 1D 2, 2A, 3, 3A, etc., wherein the DCI format 0 includes uplink scheduling information, which is used to indicate scheduling of the physical uplink shared channel PUSCH.
  • DCI format 0 indicates that the cyclic shift of the demodulation reference signal for the scheduled PUSCH is as shown in Table 1 below.
  • the LTE-Advanced system (referred to as LTE-A system) is a next-generation evolution system of the LTE system.
  • the physical uplink shared channel can be transmitted by using a single antenna port or by using multiple antenna ports.
  • 2 is a schematic diagram of a baseband signal processing of a transmitting end of a physical uplink shared channel transmitted by a multi-antenna port according to the related art LTE-A system.
  • the LTE-A system supports spatial multiplexing based on one or two codewords (CW), and each codeword corresponds to one transport block (TB).
  • the codewords are further mapped to layers, and each codeword is mapped to one or two layers of data.
  • LTE-A uses a codebook (codebook), which is a precoding technique (Precoding).
  • codebook which is a precoding technique (Precoding).
  • Coding technology is a method of preprocessing the signal at the transmitting end by using Channel Status Information (CSI) to improve multi-antenna system performance.
  • CSI Channel Status Information
  • One way for the transmitter to acquire CSI is through feedback from the receiver.
  • the general method is to save the same codebook at the receiving end and the transmitting end.
  • the receiving end selects a suitable precoding matrix in the codebook according to the current channel condition and sets its index value in the set.
  • Precoding Matrix Index (Precoding Matrix Index, referred to as PMI) is fed back to the transmitting end, and the transmitting end finds the precoding matrix according to the feedback precoding matrix index, and precodes the transmitted signal.
  • the demodulation reference signal (DM RS ) of each layer of data is precoded in the same manner as the data of each layer.
  • Demodulation reference signals for different layer data including demodulation reference signals for multi-layer data of the same user equipment for single-user multiple input multiple output system (SU-MIMO), and multi-user multiple input multiple output system (MU-MIMO)
  • Demodulation reference signals of multi-layer data of a plurality of user equipments are orthogonally used by using different demodulation reference signal cyclic shifts (CS) and/or Orthogonal Cover Codes (OCCs).
  • CS demodulation reference signal cyclic shifts
  • OCCs Orthogonal Cover Codes
  • the orthogonal mask OCC is [+1, +1] and [+1, -1], and acts on the demodulation reference signal on two slots (Slot) in one subframe (Subframe).
  • the base station needs to jointly detect the demodulation reference signals on the two slots in one subframe, thus requiring one user equipment to be two in one subframe.
  • the demodulation reference signal on the time slot must be the same.
  • the SGH mode of slot jump in the LTE system cannot be used.
  • the SGH method of the subframe jump is proposed in the related art.
  • the demodulation reference signals of one user equipment in two slots in one subframe are the same, and the demodulation reference signals on each subframe in a system frame are different, according to a certain The jump pattern changes with the sub-frame within one system frame.
  • the LTE standard version is Release 8 and Release 9
  • the LTE-A standard is Release 10, which is abbreviated as Rel. -8, Rel-9 and Rel-10
  • LTE-A standards may also include subsequent versions; systems and user devices that conform to the corresponding standard versions are called Rel-8 versions of systems and user devices, and Rel-9 versions of systems and User equipment, and Rel-10 version of the system and user equipment.
  • the Rel-10 version of the user equipment can work in the Rel-8/9 version of the system, and the Rel-8/9 version of the user equipment can be in the Rel-10 version of the system. jobs.
  • the Rel-10 version of the user equipment is required to work in the Rel-8/9 version.
  • the cyclic shift of the demodulation reference signal can be correctly configured according to the signaling in the DCI format 0. It should be noted that the current DCI format 0 does not support multi-antenna port transmission.
  • a primary object of the present invention is to provide an indication scheme for an uplink demodulation reference signal to solve at least one of the above problems.
  • a method for indicating an uplink demodulation reference signal comprising: the base station transmitting indication information to the user equipment, the indication information being used to indicate at least one of: a cyclic shift of the demodulation reference signal And a sequence jump/sequence group jump SGH mode of demodulating the reference signal; and the user equipment sends the data and the demodulation reference signal to the base station according to the received indication information.
  • the indication information is carried in a downlink control information format, where the downlink control information format includes a downlink control information format of a physical uplink shared channel for scheduling single antenna port transmission and/or a physical uplink for scheduling multi-antenna port transmission.
  • the base station configures, by using the high layer signaling, whether the orthogonal mask of the demodulation reference signal of the user equipment is enabled; if the base station does not configure the orthogonal mask of the demodulation reference signal of the user equipment, the demodulation of the user equipment The orthogonal mask of the reference signal is disabled by default.
  • the protocol of the user equipment only supports the case where the user equipment uses a single antenna port to transmit on the physical uplink shared channel, or the orthogonal mask of the demodulation reference signal of the user equipment is not enabled at the base station.
  • the indication information is used to indicate a cyclic shift of the demodulation reference signal.
  • the indication information is used to indicate the demodulation reference signal.
  • the cyclic shift and demodulation of the reference signal are orthogonal mask and / or SGH mode.
  • the format of the downlink control information where the indication information is located includes: a downlink control information format DCI format 0.
  • the indication information is used to indicate a cyclic shift of the demodulation reference signal
  • the indication information is used to indicate a cyclic shift of the demodulation reference signal of one layer
  • the cyclic shift of the demodulation reference signal of the layer indicated by the indication information The bits calculate the cyclic shift of the demodulation reference signals of the other layers.
  • the indication information is used to indicate that the orthogonal mask includes at least one of: indicating that the demodulation reference signals of the respective layers use the same orthogonal mask; indicating that the orthogonal mask indexes of the first layer and the second layer are the same, The orthogonal mask indices of Layer 3 and Layer 4 are the same, and the orthogonal mask indices of Layer 3 and Layer 4 are different from the orthogonal mask indices of Layer 1 and Layer 2; indicating Layer 1 and The orthogonal mask index of the third layer is the same, the orthogonal mask indexes of the second layer and the fourth layer are the same, and the orthogonal mask indexes of the second layer and the fourth layer are different from those of the first layer and the third layer. Orthogonal mask index.
  • the indication information is used to indicate the orthogonal mask, where the indication information indicates demodulation of each layer, where the downlink control information format where the indication information is located is used to schedule the user equipment to send the spatial multiplexing layer number less than or equal to two.
  • the reference signal uses the same orthogonal mask.
  • the indication information is used to indicate the orthogonal mask, where: the downlink control information format where the indication information is used is used to schedule the user equipment to send the spatial multiplexing layer number to be greater than two, and the SGH mode indicated by the indication information is a sub When the frame is jumped, the indication information indicates that the demodulation reference signals of the respective layers use the same orthogonal mask.
  • the range of the cyclic shift value of the demodulation reference signal indicated by the indication information is: 0, 2. 3, 4, 6, 8, 9, 10.
  • the SGH mode includes one of the following: slot mega-transition, sub-frame mega-transition. Further, whether the SGH is enabled by the high layer signaling, or the SGH is configured by the high layer signaling, or the SGH is enabled and the SGH mode is jointly configured by the high layer signaling. Further, the indication information is 3-bit signaling.
  • an indication system for an uplink demodulation reference signal including: a base station and a user equipment, where the base station is configured to send indication information to the user equipment, where the indication information is used to indicate at least one of the following: The cyclic shift of the reference signal, the orthogonal mask of the demodulation reference signal, and the sequence jump/sequence group jump SGH mode of the demodulation reference signal; the user equipment is configured to send data to the base station according to the received indication information.
  • the base station is further configured to carry the indication information in a downlink control information format, where the downlink control information format includes a downlink control information format for scheduling a physical uplink shared channel for single antenna port transmission, and/or for scheduling multiple antennas.
  • the base station transmits indication information to the user equipment, the indication information being used to indicate at least one of: cyclic shift of the demodulation reference signal, orthogonal mask of the demodulation reference signal, and sequence of the demodulation reference signal
  • the jump/sequence group jumps to the SGH mode; the user equipment performs uplink transmission according to the received indication information.
  • FIG. 1 is a schematic diagram of a cyclic prefix in a time slot according to the related art
  • FIG. 2 is a baseband of a transmitting end of a physical uplink shared channel transmitted by a multi-antenna port in an LTE-A system according to the related art
  • 3 is a schematic diagram of precoding of an LTE-A system according to the related art
  • FIG. 4 is a flowchart of a method for indicating an uplink demodulation reference signal according to an embodiment of the present invention.
  • the newly added downlink control information format may be referred to as DCI format X; or may be extended signaling by using an existing signaling type.
  • FIG. 4 is a flowchart of a method for indicating an uplink demodulation reference signal according to an embodiment of the present invention.
  • Step S402 The base station sends indication information to a user equipment, where the indication information is used to indicate at least one of the following: : a cyclic shift of the demodulation reference signal, an orthogonal mask of the demodulation reference signal, and a sequence jump/sequence group jump SGH mode of the demodulation reference signal;
  • Step S404 the user equipment according to the received indication information
  • the base station transmits data and demodulates the reference signal.
  • the base station since the base station has the ability to identify the protocol version of the user equipment and select an indication according to the protocol version, forward or backward compatibility can be achieved relatively easily.
  • the foregoing indication information is carried in a downlink control information format, where the downlink control information format includes a downlink control information format for scheduling a physical uplink shared channel for single antenna port transmission, and/or for scheduling multi-antenna port transmission.
  • the downlink control information format of the physical uplink shared channel Preferably, when the protocol of the user equipment only supports the user equipment to use the single antenna port transmission on the physical uplink shared channel, or the base station configures the orthogonal mask of the demodulation reference signal of the user equipment to be disabled.
  • the indication information is used to indicate a cyclic shift of the demodulation reference signal.
  • the indication information is used to indicate cyclic shift and demodulation of the demodulation reference signal.
  • the SGH can be configured by the higher layer signaling, or the SGH is configured by the high layer signaling, or the SGH is enabled and the SGH mode is configured by the high layer signaling.
  • the indication information is 3-bit (bit) signaling.
  • the 3-bit signaling and the protocol supported by the user equipment are divided into Rel-10 and its subsequent versions and Release-8/9.
  • 3 bits signaling used for the user equipment of Rel-10 and its subsequent versions to jointly indicate the CS, OCC and sequence/group hopping (SGH) modes of the demodulation reference signal; also used for the Rel-8/9 version
  • the user equipment indicates the CS of the demodulation reference signal.
  • the 3 bits signaling is included in a downlink control information format (DCI format).
  • the downlink control information format is sent by the base station to the target user equipment through the physical downlink control channel.
  • the SGH mode includes a SGH mode of slot hopping and subframe hopping.
  • the sequence hopping and the group hopping are enabled by the high layer signaling; when the SGH mode is configured as a subframe hopping In the case of transition, the enabling and jumping mode of the subframe hopping is configured by the high layer signaling; preferably, the value of the 3bits signaling is in the range of ⁇ 000, 001, 010, 011, 100, 101, 110, 111 ⁇ set.
  • the 3bits signaling is used to indicate the CS of the demodulation reference signal of the Rel-8/9 version of the user equipment as shown in Table 1: Table 1
  • the 3bits signaling can be included in DCI format 0.
  • the 3 bits signaling is used for the CS, OCC, and SGH modes of the demodulation reference signal jointly indicated by the user equipment of Rel-10 and subsequent versions.
  • the following are the configuration of CS, OCC and SGH The methods are explained separately.
  • Configure CS When the downlink control information format is scheduled to be sent by the target user equipment to the PUSCH transmitted by the single-antenna port, the 3 bits signaling indicates “ ⁇ s , as shown in Table 1 , and details are not described herein again.
  • the 3 bits are used to indicate a cyclic shift of the demodulation reference signal of one layer; the demodulation reference signal of the layer indicated by the 3bits signaling
  • the cyclic shift calculates the cyclic shift of the demodulation reference signals of the other layers.
  • the method of indicating and calculating is exemplified below.
  • the 3bits signaling indicates "g ⁇ s ( , where ( is the cyclic shift of the demodulation reference signal of the d-th layer data, 0 ⁇ ⁇ / ⁇ ⁇ _1. Then the cyclic shift of the demodulation reference signal of the layer 1 data) for
  • ⁇ ⁇ is the inter-layer cyclic shift difference of the demodulation reference signal, or cyclic shift offset.
  • the 3bits signaling indicates 3 ⁇ 4R S (0), where (0) is a cyclic shift of the demodulation reference signal of the layer 0 data. Bit.
  • the inter-layer cyclic shift difference ⁇ ⁇ of the demodulation reference signal is determined by the number of spatial multiplexing layers of the PUSCH. Table 2 below is an example of this. Table 2
  • the SGH mode indicating the demodulation reference signal is a slot jump; when the value of the 3bits signaling belongs to the complement of the true subset, the solution is indicated
  • the SGH mode of the reference signal is a sub-frame jump.
  • the 3bits signaling ⁇ value range is ⁇ 000, 001, 010, 011, 100, 101, 110, 111 ⁇ , when the value of the 3bits signaling belongs to ⁇ 000, 001, 010, 011 ⁇ , the SGH mode indicating the demodulation reference signal is a slot jump; when the value of the 3 bits signaling belongs to ⁇ 100, 101, 110, 111 ⁇ , indicating that the SGH mode of the demodulation reference signal is a subframe jump .
  • the SGH mode indicating the demodulation reference signal is Time slot megatransition; when the value of the 3bits signaling belongs to ⁇ 011, 100, 101 ⁇ , the SGH mode indicating the demodulation reference signal is a subframe hop.
  • the foregoing configuration mode is only used when the downlink control information format scheduling target user equipment sends the PUSCH transmitted by the multi-antenna port, and when the downlink control information format scheduling target user equipment sends the PUSCH transmitted by the single antenna port, the demodulation reference signal is demodulated.
  • the SGH mode does not use the subframe jump, and the 3 bit signaling is not used to configure the SGH mode.
  • Configuring the OCC The base station configures, by using the high layer signaling, whether the orthogonal mask of the demodulation reference signal of the user equipment is enabled; if the base station does not configure the orthogonal mask of the demodulation reference signal of the user equipment, the user The orthogonal mask of the demodulation reference signal of the device is disabled by default. For example, the user equipment first determines whether the OCC enable/disable signaling from the base station is received.
  • the user equipment does not use the OCC for the uplink demodulation reference signal; if the signaling is received, The user equipment continues to determine whether the OCC indicated by the signaling is enabled. When the OCC indicated by the signaling is not enabled, the user equipment does not use the OCC for the uplink demodulation reference signal. When the OCC indicated by the signaling is enabled, the user equipment The OCC is used for the uplink demodulation reference signal.
  • the indication information is used to indicate the cyclic shift of the demodulation reference signal and the orthogonal mask of the demodulation reference signal, and all states indicated by the indication information include one or more of the following:
  • the demodulation reference signals of the layers use the same orthogonal mask, that is, the orthogonal mask index of each layer is the same as the orthogonal mask index of the first layer;
  • the indication information is used to indicate the cyclic shift of the demodulation reference signal and the orthogonal mask and the SGH mode of the demodulation reference signal.
  • the 3 bits signaling indicates that the SGH mode of the demodulation reference signal is a subframe jump: each layer The demodulation reference signal of the data uses the same OCC.
  • the 3 bits signaling indicates that the SGH mode of the demodulation reference signal is a time slot hopping: when the downlink control information format scheduling target user equipment transmits the PUSCH transmitted by the multi-antenna port with the spatial multiplexing layer ⁇ ⁇ 2, the data of each layer The demodulation reference signal uses the same OCC;
  • the 3 bits signaling indicates the OCC; when the downlink control information format schedules the target user equipment to transmit the PUSCH transmitted by the multi-antenna port with the spatial multiplexing layer ⁇ > 2, the demodulation reference signals of the respective layers of data use different OCCs. For example, when the downlink control information format scheduling target user equipment transmits a PUSCH transmitted by a multi-antenna port with a spatial multiplexing layer number v>2, and the 3 bits signaling indicates that the SGH mode of the demodulation reference signal is a time slot jump, each layer The demodulation reference signals for the data use different OCCs.
  • each The demodulation reference signals of the layer data use the same OCC.
  • the 3 bits signaling and the spatial multiplexing layer ⁇ and the layer sequence number 1 jointly indicate the OCC used by the demodulation reference signal of the corresponding layer data.
  • the downlink control information format schedules the target user equipment to transmit the single antenna port transmission
  • the demodulation reference signal does not use OCC, and the 3bits signaling is not used to configure the OCC.
  • the downlink control information format schedules the target user equipment to transmit the single antenna port transmission
  • the demodulation reference signal uses OCC
  • the downlink control information format of the PUSCH transmitted by the scheduling target user equipment for transmitting the single antenna port includes DCI format 0.
  • an indication system for demodulating a reference signal including: a base station and a user equipment, where: the base station is configured to send indication information to the user equipment, where the indication information is used to indicate at least one of the following: The cyclic shift of the reference signal, the orthogonal mask of the demodulation reference signal, and the sequence jump/sequence group jump SGH mode of the demodulation reference signal; the user equipment is configured to send data to the base station according to the received indication information. Demodulate the reference signal.
  • the base station is further configured to carry the indication information in a downlink control information format, where the downlink control information format includes a downlink control information format for scheduling a physical uplink shared channel for single antenna port transmission, and/or for scheduling multiple antennas.
  • the downlink control information format of the physical uplink shared channel transmitted by the port Modifications of the above various embodiments will be described below.
  • the SGH method of Table 8 among the eight states indicated by the 3bits signaling, there are n states in which the SGH mode is a time slot mega-transition, and there are 8-n kinds of ⁇ !
  • the SGH mode of the state is a sub-frame mega-transition, and ⁇ is an integer between 0 and 8.
  • the inter-layer cyclic shift difference ⁇ 6
  • the 3bits signaling is shown in Table 9: Table 9
  • Manner 2 Use a uniform representation for different spatial multiplexing layers.
  • the following table shows the cyclic shift used by the layer indicated by the cyclic shift domain in the downlink control signaling. [w ( (0) indicates the layer The orthogonal mask used.
  • the above embodiment of the present invention solves the problem that the indication method in the related art cannot be satisfied.
  • the requirement of uplink multi-antenna port transmission can further indicate the parameters of the demodulation reference signal to meet the requirements of uplink multi-antenna port transmission.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.

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Abstract

The present invention discloses an indication method and an indication system for uplink demodulation reference signals. The method includes that: a base station transmits indication information to a user equipment; the indication information is used to indicate at least one of the followings: cyclic shifts of the demodulation reference signals, orthogonal masks of the demodulation reference signals, and sequence hopping/sequence group hopping modes of the demodulation reference signals; the user equipment transmits data and the demodulation reference signals to the base station according to the received indication information. The present invention can indicate parameters of the demodulation reference signals to meet requirements of uplink multi-antenna port transmission.

Description

上行解调参考信号的指示方法及系统 技术领域 本发明涉及通信领域， 具体而言， 涉及一种上行解调参考信号的指示方 法及系统。 背景技术 在第三代合作伙伴计划 ( The 3rd Generation Partnership Proj ect , 简称为 3GPP ) 的长期演进 （Long Term Evolution, 简称为 LTE ) 系统中， 釆用基站 集中调度的方式来控制用户设备 ( User Equipment , 简称为 UE ) 的物理上行 共享信道 （ Physical Uplink Shared Channel, 简称为 PUSCH ) 的传输。 对 PUSCH的上行调度信息（ Uplink Scheduling Information )由基站通过 物理下行控制信道（ Physical Downlink Control Channel, 简称为 PDCCH )发 送给目标 UE。 上行调度信息包括： 物理上行共享信道相关的资源分配、 调 制与编码方案、 解调参考信号 （Demodulation Reference Signal, 简称为 DM RS ) 的循环移位 ( Cyclic Shift ) 等控制信息。 LTE系统中物理上行共享信道釆用单天线端口传输。一个系统帧（ frame ) 包含 10个子帧 （subframe ), 每个子帧包含 2个时隙 （slot )。 图 1是才艮据相 关技术的一个时隙中的循环前缀的示意图， 如图 1所示， 对于常规循环前缀 ( Normal cyclic prefix, 简称为 Normal CP ), 每个时隙由 6个数据符号和 1 个解调参考信号所组成； 对于扩展循环前缀（Extended cyclic prefix, 简称为 Extended CP ), 每个时隙由 5个数据符号和 1个解调参考信号所组成。 解调参考信号 DM RS 由频域上的一条序列构成， 该序列为参考信号序 列的一个循环移位。 为了随机化小区间千扰， 解调参考信号的参考信号序列 根据基站配置， 可以实现基于时隙的序列跳转（ Sequence hopping )或序列组 跳转（ Group hopping ), 此方式又称为时隙跳转的 SGH方式。 即， 根据基站 配置， 一个用户设备在一个子帧内两个时隙上的解调参考信号是不一样的， 按照一定的跳转图案在一个系统帧内随时隙变化。 在时隙 中， 解调参考信号的循环移位量 "为： oc
Figure imgf000003_0001
, 其中， =("^^+ 2 +¾«(" )1110(112。 在一个无线帧内， =0,1,.."19 ; 由 高层参数配置， ¾^由上行调度信息配置。 《PRS( )由伪随机生成器生成， 具 体表示为 "PRS {ns ) = 2^=Q c(8Ns b -ns + i) · 2'' 。 上行调度信息承载于物理下行控制信道， 以一定的下行控制信息格式 ( Downlink Control Information format, 简称为 DCI format ) 由基站发送给目 标用户设备。在 LTE系统中，下行控制信息格式分为以下几种： DCI format 0、 1、 1A、 1B、 1C、 1D、 2、 2A、 3, 3A等， 其中， DCI format 0包含上行调 度信息， 用于指示物理上行共享信道 PUSCH的调度。 The present invention relates to the field of communications, and in particular to a method and system for indicating an uplink demodulation reference signal. BACKGROUND OF THE INVENTION In the Long Term Evolution (LTE) system of the 3rd Generation Partnership Project (3GPP), a centralized scheduling of base stations is used to control user equipment (User Equipment) , referred to as UE), the Physical Uplink Shared Channel (PUSCH) transmission. The uplink scheduling information (Uplink Scheduling Information) of the PUSCH is sent by the base station to the target UE through a Physical Downlink Control Channel (PDCCH). The uplink scheduling information includes: resource allocation, a modulation and coding scheme related to the physical uplink shared channel, and a cyclic shift (Cyclic Shift) of the Demodulation Reference Signal (DMRS). In the LTE system, the physical uplink shared channel is transmitted by a single antenna port. A system frame (frame) contains 10 subframes, each of which contains 2 slots. FIG. 1 is a schematic diagram of a cyclic prefix in a time slot according to the related art. As shown in FIG. 1, for a normal cyclic prefix (Normal CP), each time slot is composed of 6 data symbols and 1 demodulation reference signal; for extended cyclic prefix (Extended CP), each time slot consists of 5 data symbols and 1 demodulation reference signal. The demodulation reference signal DM RS consists of a sequence in the frequency domain which is a cyclic shift of the reference signal sequence. In order to randomize the inter-cell interference, the reference signal sequence of the demodulation reference signal may implement a sequence hopping or a group hopping according to the configuration of the base station, which is also called a time slot. The SGH way to jump. That is, according to the configuration of the base station, the demodulation reference signals of one user equipment in two time slots in one subframe are different, and vary with the time slot in one system frame according to a certain jump pattern. In the time slot, the cyclic shift amount of the demodulation reference signal is: oc
Figure imgf000003_0001
, among them, =("^^+ 2 +3⁄4«(" )1110(112. Within a radio frame, =0,1,.."19 ; Configured by the higher-level parameters, 3⁄4^ is configured by the uplink scheduling information. PRS ( ) Generated by a pseudo-random generator, specifically expressed as " PRS {n s ) = 2^ = Q c(8N sb -n s + i) · 2''. The uplink scheduling information is carried on the physical downlink control channel, with a certain downlink. The Downlink Control Information Format (DCI format) is sent by the base station to the target user equipment. In the LTE system, the downlink control information format is divided into the following types: DCI format 0, 1, 1A, 1B, 1C, 1D 2, 2A, 3, 3A, etc., wherein the DCI format 0 includes uplink scheduling information, which is used to indicate scheduling of the physical uplink shared channel PUSCH.
DCI format 0指示用于所调度的 PUSCH的解调参考信号的循环移位如 下表 1所示。 表 1 DCI format 0 indicates that the cyclic shift of the demodulation reference signal for the scheduled PUSCH is as shown in Table 1 below. Table 1
Figure imgf000004_0001
Figure imgf000004_0001
LTE- Advanced系统（简称 LTE-A系统）是 LTE系统的下一代演进系统。 在 LTE-A系统中， 物理上行共享信道可釆用单天线端口传输， 也可釆用 多天线端口传输。 图 2是根据相关技术的 LTE-A系统釆用多天线端口传输的 物理上行共享信道的发射端基带信号处理的示意图。 在多天线端口传输时， LTE-A系统支持基于一个或两个码字（ Codeword, 简称为 CW )的空间复用， 每个码字对应一个传输块 ( Transport Block, 简称为 TB )。 码字要进一步映 射到层 （layer), 每个码字映射为一层或两层数据。 图 3是根据相关技术的 LTE-A 系统的预编码的示意图， 如图 3所示， LTE-A 釆用基于码书 （ Codebook, 又称为码本） 的线性预编码技术 ( Precoding ) , 预编码技术是一种利用信道状态信息 （ Channel Status Information, 简称为 CSI ) 在发射端对信号进行预处理以提高多天线系统性 能的技术。 发射端获取 CSI的一种途径是通过接收端的反馈。 为了降低反馈 开销， 一般釆用的方式是在接收端和发射端保存相同的码本。 接收端根据当 前信道状况， 在码本中选择适合的预编码矩阵并将其在集合中的索引值The LTE-Advanced system (referred to as LTE-A system) is a next-generation evolution system of the LTE system. In the LTE-A system, the physical uplink shared channel can be transmitted by using a single antenna port or by using multiple antenna ports. 2 is a schematic diagram of a baseband signal processing of a transmitting end of a physical uplink shared channel transmitted by a multi-antenna port according to the related art LTE-A system. In the case of multi-antenna port transmission, the LTE-A system supports spatial multiplexing based on one or two codewords (CW), and each codeword corresponds to one transport block (TB). The codewords are further mapped to layers, and each codeword is mapped to one or two layers of data. 3 is a schematic diagram of precoding of an LTE-A system according to the related art. As shown in FIG. 3, LTE-A uses a codebook (codebook), which is a precoding technique (Precoding). Coding technology is a method of preprocessing the signal at the transmitting end by using Channel Status Information (CSI) to improve multi-antenna system performance. The technology that can be. One way for the transmitter to acquire CSI is through feedback from the receiver. In order to reduce the feedback overhead, the general method is to save the same codebook at the receiving end and the transmitting end. The receiving end selects a suitable precoding matrix in the codebook according to the current channel condition and sets its index value in the set.
( Precoding Matrix Index, 简称为 PMI ) 反馈回发射端， 发射端才艮据反馈的 预编码矩阵索引找到预编码矩阵， 并对发送信号进行预编码。 数据预编码的 数学模型为 _y = H + « , 其中 y为接收信号矢量， H为信道系数矩阵， W为 预编码矩阵， s为信号矢量， n为噪声矢量。 (Precoding Matrix Index, referred to as PMI) is fed back to the transmitting end, and the transmitting end finds the precoding matrix according to the feedback precoding matrix index, and precodes the transmitted signal. The mathematical model of data precoding is _y = H + « , where y is the received signal vector, H is the channel coefficient matrix, W is the precoding matrix, s is the signal vector, and n is the noise vector.
LTE-A系统中， 当物理上行共享信道釆用多天线端口传输时， 各层数据 的解调参考信号 （DM RS ) 同各层数据一样进行预编码。 而不同层数据的解 调参考信号， 包括对单用户多输入多输出系统（ SU-MIMO )同一用户设备的 多层数据的解调参考信号， 和多用户多输入多输出系统 （ MU-MIMO ) 多个 用户设备的多层数据的解调参考信号， 通过使用不同的解调参考信号循环移 位（ CS )和 /或正交掩码 ( Orthogonal Cover Code, 简称为 OCC )进行正交 4匕， 以区分用户空间复用的不同层数据或者区分不同的用户。 其中， 正交掩码 OCC为 [+1 , +1]和 [+1 , - 1] ,作用于一个子帧（Subframe )内两个时隙（Slot ) 上的解调参考信号。 当使用正交掩码 OCC 对解调参考信号正交化时， 基站需要对一个子帧 内两个时隙上的解调参考信号进行联合检测， 因而要求一个用户设备在一个 子帧内两个时隙上的解调参考信号必须是一样的。这种情况下，不能使用 LTE 系统中时隙跳转的 SGH 方式。 但为了尽可能随机化小区间千扰， 在相关技 术提出了子帧跳转的 SGH 方式。 即， 根据基站配置， 一个用户设备在一个 子帧内两个时隙上的解调参考信号是一样的， 在一个系统帧内每个子帧上的 解调参考信号是不一样的，按照一定的跳转图案在一个系统帧内随子帧变化。 目前，在 3GPP制定的标准版本中， LTE标准的版本为第 8版（ Release 8 ) 和第 9版 （Release 9 ), LTE-A标准的版本为第 10版 ( Release 10 ), 分别简 写为 Rel-8, Rel-9和 Rel-10, LTE-A标准可能还包含后续版本； 符合相应标 准版本的系统和用户设备分别称为 Rel-8版本的系统和用户设备， Rel-9版本 的系统和用户设备， 以及 Rel-10版本的系统和用户设备。 并且要求前向兼容 和后向兼容， 例如， Rel-10版本的用户设备能够在 Rel-8/9版本的系统中工 作， Rel-8/9版本的用户设备能够在 Rel-10版本的系统中工作。 对于解调参考信号而言， 要求 Rel-10版本的用户设备工作在 Rel-8/9版 本的系统中时， 以及 Rel-8/9版本的用户设备工作在 Rel- 10版本的系统中时， 都能够才艮据 DCI format 0中的信令正确配置解调参考信号的循环移位 。 需要注意的是，目前的 DCI format 0并不支持多天线端口传输，在 LTE-A 上行多天线端口传输的场景下， 使用目前的 DCI format 0将不能指示多天线 端口传输场景下的解调参考信号的循环位移。 另外， 在 LTE-A 系统中， 对 Rel- 10版本的用户设备， 则需要通过信令配置不仅仅是解调参考信号的循环 移位， 还需要配置正交掩码、 SGH方式等， 同时保证对 Rel-8/9版本的用户 设备的后向兼容， 以及保证 Rel-10版本的用户设备前向兼容。 因此， 目前的 指示方法已经无法满足上行多天线端口传输的要求。 发明内容 本发明的主要目的在于提供一种上行解调参考信号的指示方案， 以至少 解决上述问题之一。 根据本发明的一个方面， 提供了一种上行解调参考信号的指示方法， 该 方法包括：基站向用户设备发送指示信息，指示信息用于指示以下至少之一： 解调参考信号的循环移位、 解调参考信号的正交掩码、 解调参考信号的序列 跳转 /序列组跳转 SGH方式； 用户设备根据接收到的指示信息， 向基站发送 数据和解调参考信号。 进一步地， 指示信息携带于下行控制信息格式中， 其中， 下行控制信息 格式包括用于调度单天线端口传输的物理上行共享信道的下行控制信息格式 和 /或用于调度多天线端口传输的物理上行共享信道的下行控制信息格式。 进一步地， 基站通过高层信令配置用户设备的解调参考信号的正交掩码 是否使能； 如果基站没有对用户设备的解调参考信号的正交掩码进行配置， 则用户设备的解调参考信号的正交掩码默认为不使能。 进一步地， 在用户设备的协议仅支持用户设备在物理上行共享信道上釆 用单天线端口传输的情况下， 或者在基站配置用户设备的解调参考信号的正 交掩码为不使能的情况下， 指示信息用于指示解调参考信号的循环移位。 进一步地， 在用户设备的协议支持用户设备在物理上行共享信道上釆用 多天线端口和 /或单天线端口传输的情况下，指示信息用于指示解调参考信号 的循环移位和解调参考信号的正交掩码和 /或 SGH方式。 进一步地， 指示信息所在的下行控制信息格式包括： 下行控制信息格式 DCI format 0。 进一步地， 指示信息用于指示解调参考信号的循环移位包括： 指示信息 用于指示一个层的解调参考信号的循环移位； 居指示信息所指示的层的解 调参考信号的循环移位计算其他层的解调参考信号的循环移位。 进一步地， 指示信息用于指示正交掩码包括以下至少之一： 指示各个层 的解调参考信号使用相同的正交掩码； 指示第 1层和第 2层的正交掩码索引 相同， 第 3层和第 4层的正交掩码索引相同， 且第 3层和第 4层的正交掩码 索引不同于第 1层和第 2层的正交掩码索引； 指示第 1层和第 3层的正交掩 码索引相同， 第 2层和第 4层的正交掩码索引相同， 且第 2层和第 4层的正 交掩码索引不同于第 1层和第 3层的正交掩码索引。 进一步地， 指示信息用于指示正交掩码包括： 在指示信息所在的下行控 制信息格式用于调度用户设备发送空间复用层数小于或等于二的情况下， 指 示信息指示各个层的解调参考信号使用相同的正交掩码。 进一步地， 指示信息用于指示正交掩码包括： 在指示信息所在的下行控 制信息格式用于调度用户设备发送空间复用层数大于二的情况下， 并且， 指 示信息指示的 SGH 方式为子帧跳转时， 指示信息指示各个层的解调参考信 号使用相同的正交掩码。 进一步地， 在指示信息所在的下行控制信息格式用于调度用户设备发送 空间复用层数为一的情况下， 指示信息指示的解调参考信号的循环移位值的 范围为： 0、 2、 3、 4、 6、 8、 9、 10。 进一步地， SGH方式包括以下之一： 时隙兆转、 子帧兆转。 进一步地， 由高层信令配置 SGH是否使能， 或者由高层信令配置 SGH 的方式， 或者由高层信令联合配置 SGH是否使能以及 SGH的方式。 进一步地， 指示信息为 3比特的信令。 进一步地， 3比特的信令所表示的 8种状态中， 有 η种状态的 SGH方式 为时隙跳转， 有 8-η种状态的 SGH方式为子帧跳转， 其中， η为 0至 8之间 的一个整数。 根据本发明的另一方面， 还提供了一种上行解调参考信号的指示系统， 包括： 基站和用户设备， 基站用于向用户设备发送指示信息， 指示信息用于 指示以下至少之一： 解调参考信号的循环移位、 解调参考信号的正交掩码、 解调参考信号的序列跳转 /序列组跳转 SGH方式； 用户设备用于根据接收到 的指示信息， 向基站发送数据和解调参考信号。 进一步地， 基站还用于将指示信息携带于下行控制信息格式中， 其中， 下行控制信息格式包括用于调度单天线端口传输的物理上行共享信道的下行 控制信息格式和 /或用于调度多天线端口传输的物理上行共享信道的下行控 制信息格式。 通过本发明， 釆用基站向用户设备发送指示信息， 该指示信息用于指示 以下至少之一： 解调参考信号的循环移位、 解调参考信号的正交掩码、 解调 参考信号的序列跳转 /序列组跳转 SGH方式； 用户设备根据接收到的指示信 息进行上行传输。 解决了相关技术中的指示方法无法满足上行多天线端口传 输的要求的问题， 进而可以对解调参考信号的参数进行指示， 以满足上行多 天线端口传输的要求。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部 分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的 不当限定。 在附图中： 图 1是才艮据相关技术的一个时隙中的循环前缀的示意图； 图 2是根据相关技术的 LTE-A系统釆用多天线端口传输的物理上行共享 信道的发射端基带信号处理的示意图； 图 3是根据相关技术的 LTE-A系统的预编码的示意图； 图 4是根据本发明实施例的上行解调参考信号的指示方法的流程图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在 不冲突的情况下， 本申请中的实施例及实施例中的特征可以相互组合。 在以下实施例中的上行调度可以新增下行控制信息格式， 例如， 该新增 加的下行控制信息格式可以称为 DCI format X； 或者也可以在已有信令类型 的基础上， 通过扩展信令的长度， 来增加信令指示的功能。 图 4是根据本发明实施例的上行解调参考信号的指示方法的流程图， 该 流程包括如下步骤： 步骤 S402, 基站向用户设备发送指示信息， 其中， 该指示信息用于指示 以下至少之一： 解调参考信号的循环移位、 解调参考信号的正交掩码、 解调 参考信号的序列跳转 /序列组跳转 SGH方式； 步骤 S404, 用户设备根据接收到的指示信息， 向该基站发送数据和解调 参考信号。 通过上述步骤 S402和步骤 S404, 基站可以根据用户设备的协议版本选 择指示信息所指示的内容， 从而可以支持多天线端口的传输。 另外， 又由于 基站有了识别用户设备的协议版本并且根据协议版本选择指示的能力，因此， 可以比较容易地实现前向或后向兼容。 优选地， 上述的指示信息携带于下行控制信息格式中， 其中， 该下行控 制信息格式包括用于调度单天线端口传输的物理上行共享信道的下行控制信 息格式和 /或用于调度多天线端口传输的物理上行共享信道的下行控制信息 格式。 优选地， 在用户设备的协议仅支持用户设备在物理上行共享信道上釆用 单天线端口传输的情况下， 或者在基站配置用户设备的解调参考信号的正交 掩码为不使能的情况下， 该指示信息用于指示解调参考信号的循环移位。 优选地， 在用户设备的协议支持用户设备在物理上行共享信道上釆用多 天线端口和 /或单天线端口传输的情况下，该指示信息用于指示解调参考信号 的循环移位、 解调参考信号的正交掩码和 SGH方式。 其中， 可以由高层信令配置 SGH是否使能， 或者由高层信令配置 SGH 的方式， 或者由高层信令联合配置 SGH是否使能以及 SGH的方式。 优选地， 该指示信息为 3比特 （bit ) 的信令。 下面对以 3比特的信令以及用户设备支持的协议分为 Rel-10及其后续版 本和 Release-8/9为例进行说明。 定义的 3 bits信令， 用于对 Rel-10及其后续版本的用户设备联合指示解 调参考信号的 CS , OCC以及 sequence/group hopping ( SGH ) 方式； 还用于 对 Rel-8/9版本的用户设备指示解调参考信号的 CS。 优选地， 3bits信令包含在下行控制信息格式 （DCI format ) 中。 该下行 控制信息格式通过物理下行控制信道， 由基站发送给目标用户设备。 优选地， SGH方式包括时隙跳转 （ slot hopping ) 和子帧跳转 ( subframe hopping )的 SGH方式。 其中， 当所述 SGH方式配置为时隙跳转时， 序列跳 转 ( Sequence hopping ) 和序列组兆转 ( Group hopping ) 的使能由高层信令 配置； 当所述 SGH 方式配置为子帧跳转时， 子帧跳转的使能和跳转方式由 高层信令配置； 优选地， 3bits信令的取值范围为 {000, 001 , 010, 011 , 100, 101 , 110, 111 }的子集。 下面对 3bits信令用于 Rel-8/9版本和用于 Rel-10及其后续版本的指示解 调参考信号分别进行说明。 In the LTE-A system, when the physical uplink shared channel is transmitted by using multiple antenna ports, the demodulation reference signal (DM RS ) of each layer of data is precoded in the same manner as the data of each layer. Demodulation reference signals for different layer data, including demodulation reference signals for multi-layer data of the same user equipment for single-user multiple input multiple output system (SU-MIMO), and multi-user multiple input multiple output system (MU-MIMO) Demodulation reference signals of multi-layer data of a plurality of user equipments are orthogonally used by using different demodulation reference signal cyclic shifts (CS) and/or Orthogonal Cover Codes (OCCs). To distinguish different layer data of user space reuse or to distinguish different users. The orthogonal mask OCC is [+1, +1] and [+1, -1], and acts on the demodulation reference signal on two slots (Slot) in one subframe (Subframe). When the orthogonal reference mask OCC is used to orthogonalize the demodulation reference signal, the base station needs to jointly detect the demodulation reference signals on the two slots in one subframe, thus requiring one user equipment to be two in one subframe. The demodulation reference signal on the time slot must be the same. In this case, the SGH mode of slot jump in the LTE system cannot be used. However, in order to randomize the inter-cell interference as much as possible, the SGH method of the subframe jump is proposed in the related art. That is, according to the configuration of the base station, the demodulation reference signals of one user equipment in two slots in one subframe are the same, and the demodulation reference signals on each subframe in a system frame are different, according to a certain The jump pattern changes with the sub-frame within one system frame. Currently, in the standard version developed by 3GPP, the LTE standard version is Release 8 and Release 9 and the LTE-A standard is Release 10, which is abbreviated as Rel. -8, Rel-9 and Rel-10, LTE-A standards may also include subsequent versions; systems and user devices that conform to the corresponding standard versions are called Rel-8 versions of systems and user devices, and Rel-9 versions of systems and User equipment, and Rel-10 version of the system and user equipment. It also requires forward compatibility and backward compatibility. For example, the Rel-10 version of the user equipment can work in the Rel-8/9 version of the system, and the Rel-8/9 version of the user equipment can be in the Rel-10 version of the system. jobs. For demodulation reference signals, the Rel-10 version of the user equipment is required to work in the Rel-8/9 version. In this system, and when the Rel-8/9 version of the user equipment works in the Rel-10 version of the system, the cyclic shift of the demodulation reference signal can be correctly configured according to the signaling in the DCI format 0. It should be noted that the current DCI format 0 does not support multi-antenna port transmission. In the scenario of LTE-A uplink multi-antenna port transmission, using the current DCI format 0 will not indicate the demodulation reference in the multi-antenna port transmission scenario. The cyclic shift of the signal. In addition, in the LTE-A system, for the Rel-10 version of the user equipment, it is necessary to configure not only the cyclic shift of the demodulation reference signal but also the orthogonal mask, the SGH mode, etc., while ensuring Backward compatibility with Rel-8/9 version of the user equipment and forward compatibility of the Rel-10 version of the user equipment. Therefore, the current indication method has been unable to meet the requirements of uplink multi-antenna port transmission. SUMMARY OF THE INVENTION A primary object of the present invention is to provide an indication scheme for an uplink demodulation reference signal to solve at least one of the above problems. According to an aspect of the present invention, a method for indicating an uplink demodulation reference signal is provided, the method comprising: the base station transmitting indication information to the user equipment, the indication information being used to indicate at least one of: a cyclic shift of the demodulation reference signal And a sequence jump/sequence group jump SGH mode of demodulating the reference signal; and the user equipment sends the data and the demodulation reference signal to the base station according to the received indication information. Further, the indication information is carried in a downlink control information format, where the downlink control information format includes a downlink control information format of a physical uplink shared channel for scheduling single antenna port transmission and/or a physical uplink for scheduling multi-antenna port transmission. The downlink control information format of the shared channel. Further, the base station configures, by using the high layer signaling, whether the orthogonal mask of the demodulation reference signal of the user equipment is enabled; if the base station does not configure the orthogonal mask of the demodulation reference signal of the user equipment, the demodulation of the user equipment The orthogonal mask of the reference signal is disabled by default. Further, the protocol of the user equipment only supports the case where the user equipment uses a single antenna port to transmit on the physical uplink shared channel, or the orthogonal mask of the demodulation reference signal of the user equipment is not enabled at the base station. Next, the indication information is used to indicate a cyclic shift of the demodulation reference signal. Further, when the protocol of the user equipment supports the user equipment to transmit on the physical uplink shared channel by using multiple antenna ports and/or single antenna ports, the indication information is used to indicate the demodulation reference signal. The cyclic shift and demodulation of the reference signal are orthogonal mask and / or SGH mode. Further, the format of the downlink control information where the indication information is located includes: a downlink control information format DCI format 0. Further, the indication information is used to indicate a cyclic shift of the demodulation reference signal, the indication information is used to indicate a cyclic shift of the demodulation reference signal of one layer, and the cyclic shift of the demodulation reference signal of the layer indicated by the indication information The bits calculate the cyclic shift of the demodulation reference signals of the other layers. Further, the indication information is used to indicate that the orthogonal mask includes at least one of: indicating that the demodulation reference signals of the respective layers use the same orthogonal mask; indicating that the orthogonal mask indexes of the first layer and the second layer are the same, The orthogonal mask indices of Layer 3 and Layer 4 are the same, and the orthogonal mask indices of Layer 3 and Layer 4 are different from the orthogonal mask indices of Layer 1 and Layer 2; indicating Layer 1 and The orthogonal mask index of the third layer is the same, the orthogonal mask indexes of the second layer and the fourth layer are the same, and the orthogonal mask indexes of the second layer and the fourth layer are different from those of the first layer and the third layer. Orthogonal mask index. Further, the indication information is used to indicate the orthogonal mask, where the indication information indicates demodulation of each layer, where the downlink control information format where the indication information is located is used to schedule the user equipment to send the spatial multiplexing layer number less than or equal to two. The reference signal uses the same orthogonal mask. Further, the indication information is used to indicate the orthogonal mask, where: the downlink control information format where the indication information is used is used to schedule the user equipment to send the spatial multiplexing layer number to be greater than two, and the SGH mode indicated by the indication information is a sub When the frame is jumped, the indication information indicates that the demodulation reference signals of the respective layers use the same orthogonal mask. Further, when the downlink control information format in which the indication information is used is used to schedule the user equipment to send the spatial multiplexing layer to one, the range of the cyclic shift value of the demodulation reference signal indicated by the indication information is: 0, 2. 3, 4, 6, 8, 9, 10. Further, the SGH mode includes one of the following: slot mega-transition, sub-frame mega-transition. Further, whether the SGH is enabled by the high layer signaling, or the SGH is configured by the high layer signaling, or the SGH is enabled and the SGH mode is jointly configured by the high layer signaling. Further, the indication information is 3-bit signaling. Further, among the eight states indicated by the 3-bit signaling, the SGH mode having n states is a slot jump, and the SGH mode having 8-n states is a subframe jump, where η is 0 to Between 8 An integer. According to another aspect of the present invention, an indication system for an uplink demodulation reference signal is provided, including: a base station and a user equipment, where the base station is configured to send indication information to the user equipment, where the indication information is used to indicate at least one of the following: The cyclic shift of the reference signal, the orthogonal mask of the demodulation reference signal, and the sequence jump/sequence group jump SGH mode of the demodulation reference signal; the user equipment is configured to send data to the base station according to the received indication information. Demodulate the reference signal. Further, the base station is further configured to carry the indication information in a downlink control information format, where the downlink control information format includes a downlink control information format for scheduling a physical uplink shared channel for single antenna port transmission, and/or for scheduling multiple antennas. The downlink control information format of the physical uplink shared channel transmitted by the port. With the present invention, the base station transmits indication information to the user equipment, the indication information being used to indicate at least one of: cyclic shift of the demodulation reference signal, orthogonal mask of the demodulation reference signal, and sequence of the demodulation reference signal The jump/sequence group jumps to the SGH mode; the user equipment performs uplink transmission according to the received indication information. The problem that the indication method in the related art cannot meet the requirements of the uplink multi-antenna port transmission is solved, and the parameters of the demodulation reference signal can be instructed to meet the requirements of the uplink multi-antenna port transmission. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of a cyclic prefix in a time slot according to the related art; FIG. 2 is a baseband of a transmitting end of a physical uplink shared channel transmitted by a multi-antenna port in an LTE-A system according to the related art; 3 is a schematic diagram of precoding of an LTE-A system according to the related art; and FIG. 4 is a flowchart of a method for indicating an uplink demodulation reference signal according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that In the case of no conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The uplink control information format may be added to the uplink scheduling information in the following embodiments. For example, the newly added downlink control information format may be referred to as DCI format X; or may be extended signaling by using an existing signaling type. The length of the signal to increase the signaling. FIG. 4 is a flowchart of a method for indicating an uplink demodulation reference signal according to an embodiment of the present invention. The process includes the following steps: Step S402: The base station sends indication information to a user equipment, where the indication information is used to indicate at least one of the following: : a cyclic shift of the demodulation reference signal, an orthogonal mask of the demodulation reference signal, and a sequence jump/sequence group jump SGH mode of the demodulation reference signal; Step S404, the user equipment according to the received indication information The base station transmits data and demodulates the reference signal. Through the foregoing steps S402 and S404, the base station can select the content indicated by the indication information according to the protocol version of the user equipment, so that the transmission of the multi-antenna port can be supported. In addition, since the base station has the ability to identify the protocol version of the user equipment and select an indication according to the protocol version, forward or backward compatibility can be achieved relatively easily. Preferably, the foregoing indication information is carried in a downlink control information format, where the downlink control information format includes a downlink control information format for scheduling a physical uplink shared channel for single antenna port transmission, and/or for scheduling multi-antenna port transmission. The downlink control information format of the physical uplink shared channel. Preferably, when the protocol of the user equipment only supports the user equipment to use the single antenna port transmission on the physical uplink shared channel, or the base station configures the orthogonal mask of the demodulation reference signal of the user equipment to be disabled. Next, the indication information is used to indicate a cyclic shift of the demodulation reference signal. Preferably, in the case that the protocol of the user equipment supports the user equipment to transmit on the physical uplink shared channel by using multiple antenna ports and/or single antenna ports, the indication information is used to indicate cyclic shift and demodulation of the demodulation reference signal. The orthogonal mask of the reference signal and the SGH mode. The SGH can be configured by the higher layer signaling, or the SGH is configured by the high layer signaling, or the SGH is enabled and the SGH mode is configured by the high layer signaling. Preferably, the indication information is 3-bit (bit) signaling. The following is an example in which the 3-bit signaling and the protocol supported by the user equipment are divided into Rel-10 and its subsequent versions and Release-8/9. Defined 3 bits signaling, used for the user equipment of Rel-10 and its subsequent versions to jointly indicate the CS, OCC and sequence/group hopping (SGH) modes of the demodulation reference signal; also used for the Rel-8/9 version The user equipment indicates the CS of the demodulation reference signal. Preferably, the 3 bits signaling is included in a downlink control information format (DCI format). The downlink control information format is sent by the base station to the target user equipment through the physical downlink control channel. Preferably, the SGH mode includes a SGH mode of slot hopping and subframe hopping. When the SGH mode is configured as a time slot hop, the sequence hopping and the group hopping are enabled by the high layer signaling; when the SGH mode is configured as a subframe hopping In the case of transition, the enabling and jumping mode of the subframe hopping is configured by the high layer signaling; preferably, the value of the 3bits signaling is in the range of {000, 001, 010, 011, 100, 101, 110, 111 } set. The following describes the 3-bits signaling for the Rel-8/9 version and the indication demodulation reference signals for Rel-10 and subsequent versions.
(一 ) 3bits信令用于对 Rel-8/9版本的用户设备指示解调参考信号的 CS 如表 1所示： 表 1 (1) The 3bits signaling is used to indicate the CS of the demodulation reference signal of the Rel-8/9 version of the user equipment as shown in Table 1: Table 1
Figure imgf000010_0001
Figure imgf000010_0001
优选地， 该 3bits信令可以包含在 DCI format 0中。  Preferably, the 3bits signaling can be included in DCI format 0.
(二） 该 3bits信令用于对 Rel-10及其后续版本的用户设备联合指示的 解调参考信号的 CS、 OCC以及 SGH方式。 下面对配置 CS、 OCC以及 SGH 方式分别进行说明。 配置 CS: 当下行控制信息格式调度目标用户设备发送单天线端口传输的 PUSCH 时， 该 3bits信令指示《^s, 如表 1所示， 在此不再赘述。 当下行控制信息格式调度目标用户设备发送多天线端口传输的 PUSCH 时， 该 3bits用于指示一个层的解调参考信号的循环移位； 居所述 3bits信 令所指示的层的解调参考信号的循环移位计算其他层的解调参考信号的循环 移位。 下面对该指示和计算的方法进行举例说明。 该 3bits信令指示《g^s ( ， 其中， ( 为第 d层数据的解调参考信号 的循环移位， 0≤ί/≤υ_1。则第 1层数据的解调参考信号的循环移位 为 (2) The 3 bits signaling is used for the CS, OCC, and SGH modes of the demodulation reference signal jointly indicated by the user equipment of Rel-10 and subsequent versions. The following are the configuration of CS, OCC and SGH The methods are explained separately. Configure CS: When the downlink control information format is scheduled to be sent by the target user equipment to the PUSCH transmitted by the single-antenna port, the 3 bits signaling indicates “^ s , as shown in Table 1 , and details are not described herein again. When the downlink control information format scheduling target user equipment sends the PUSCH transmitted by the multi-antenna port, the 3 bits are used to indicate a cyclic shift of the demodulation reference signal of one layer; the demodulation reference signal of the layer indicated by the 3bits signaling The cyclic shift calculates the cyclic shift of the demodulation reference signals of the other layers. The method of indicating and calculating is exemplified below. The 3bits signaling indicates "g^ s ( , where ( is the cyclic shift of the demodulation reference signal of the d-th layer data, 0 ≤ ί / ≤ υ_1. Then the cyclic shift of the demodulation reference signal of the layer 1 data) for
«D¾RS (0 = (nS s (d) + {l~d)- Acs ) mod 12 / = 0,···,υ- 1。 其中， Δ∞为解调参考信 号的层间循环移位差， 或称循环移位偏移 （ cyclic shift offset )。 优选地， 当下行控制信息格式调度目标用户设备发送多天线端口传输的 PUSCH时， 该 3bits信令指示 ¾RS (0) , 其中， (0)为第 0层数据的解调 参考信号的循环移位。 则第 1 层数据的解调参考信号的循环移位 为 d ( 0) + /'Acs) modl2 l = U- 。 其中，解调参考信号的层间循环移位差 Δ∞由 PUSCH的空间复用层数决 定， 下表 2是对此的举例说明。 表 2 «D3⁄4RS (0 = ( n S s ( d ) + {l~d)- A cs ) mod 12 / = 0,···,υ-1. Where Δ ∞ is the inter-layer cyclic shift difference of the demodulation reference signal, or cyclic shift offset. Preferably, when the downlink control information format scheduling target user equipment sends the PUSCH transmitted by the multi-antenna port, the 3bits signaling indicates 3⁄4R S (0), where (0) is a cyclic shift of the demodulation reference signal of the layer 0 data. Bit. Then, the cyclic shift of the demodulation reference signal of the layer 1 data is d ( 0) + /'A cs ) modl2 l = U- . The inter-layer cyclic shift difference Δ ∞ of the demodulation reference signal is determined by the number of spatial multiplexing layers of the PUSCH. Table 2 below is an example of this. Table 2
Figure imgf000011_0001
Figure imgf000011_0001
配置 SGH方式: 当该 3bits信令的值属于其取值范围的一个真子集时，指示解调参考信号 的 SGH方式为时隙跳转； 当该 3bits信令的值属于上述真子集的补集时， 指 示解调参考信号的 SGH方式为子帧跳转。 Configure the SGH mode: When the value of the 3bits signaling belongs to a true subset of the value range, the SGH mode indicating the demodulation reference signal is a slot jump; when the value of the 3bits signaling belongs to the complement of the true subset, the solution is indicated The SGH mode of the reference signal is a sub-frame jump.
Ϊ列^口， ^口果该 3bits信令 ό 取值范围为 {000, 001 , 010, 011 , 100, 101 , 110, 111 } , 当该 3bits信令的值属于 {000, 001 , 010, 011 }时， 指示解调参 考信号的 SGH方式为时隙跳转； 当该 3bits信令的值属于 { 100, 101 , 110, 111 }时， 指示解调参考信号的 SGH方式为子帧跳转。 如果该 3bits信令的取值范围为 {000, 001 , 010, 011 , 100, 101} , 当该 3bits信令的值属于 {000, 001 , 010}时， 指示解调参考信号的 SGH方式为时 隙兆转； 当该 3bits信令的值属于 {011 , 100, 101}时， 指示解调参考信号的 SGH方式为子帧跳转。 优选地， 上述配置方式只用于当下行控制信息格式调度目标用户设备发 送多天线端口传输的 PUSCH时， 而当下行控制信息格式调度目标用户设备 发送单天线端口传输的 PUSCH时，解调参考信号不使用子帧跳转的 SGH方 式， 该 3bit信令不用于配置 SGH方式。 配置 OCC: 基站通过高层信令配置用户设备的解调参考信号的正交掩码是否使能； 如果所述基站没有对该用户设备的解调参考信号的正交掩码进行配置， 则该 用户设备的解调参考信号的正交掩码默认为不使能。 例如， 用户设备首先判断是否有接收到来自基站的 OCC使能 /不使能信 令， 如果没接收到信令， 则用户设备不对上行解调参考信号使用 OCC; 如果 有接收到信令， 则用户设备继续判断该信令指示的 OCC 是否使能， 当信令 指示的 OCC不使能时， 则用户设备不对上行解调参考信号使用 OCC, 当信 令指示的 OCC使能时， 则用户设备对上行解调参考信号使用 OCC。 ( 1 ) 指示信息用于指示解调参考信号的循环移位和解调参考信号的正 交掩码 所述指示信息指示的所有状态中， 包括以下的一种或多种： 有部分状态指示各个层的解调参考信号使用相同的正交掩码， 即各个层 的正交掩码索引与第 1层的正交掩码索引相同； 有部分状态指示第 1层和第 2层的正交掩码索引相同， 第 3层和第 4层 的正交掩码索引相同， 且第 3层和第 4层的正交掩码索引不同于第 1层和第 2层的正交掩码索引； 有部分状态指示第 1层和第 3层的正交掩码索引相同， 第 2层和第 4层 的正交掩码索引相同， 且第 2层和第 4层的正交掩码索引不同于第 1层和第 3层的正交掩码索引。 Ϊ列^口, ^口果 The 3bits signaling 取 value range is {000, 001, 010, 011, 100, 101, 110, 111 }, when the value of the 3bits signaling belongs to {000, 001, 010, 011 }, the SGH mode indicating the demodulation reference signal is a slot jump; when the value of the 3 bits signaling belongs to {100, 101, 110, 111 }, indicating that the SGH mode of the demodulation reference signal is a subframe jump . If the value of the 3bits signaling is {000, 001, 010, 011, 100, 101}, when the value of the 3bits signaling belongs to {000, 001, 010}, the SGH mode indicating the demodulation reference signal is Time slot megatransition; when the value of the 3bits signaling belongs to {011, 100, 101}, the SGH mode indicating the demodulation reference signal is a subframe hop. Preferably, the foregoing configuration mode is only used when the downlink control information format scheduling target user equipment sends the PUSCH transmitted by the multi-antenna port, and when the downlink control information format scheduling target user equipment sends the PUSCH transmitted by the single antenna port, the demodulation reference signal is demodulated. The SGH mode does not use the subframe jump, and the 3 bit signaling is not used to configure the SGH mode. Configuring the OCC: The base station configures, by using the high layer signaling, whether the orthogonal mask of the demodulation reference signal of the user equipment is enabled; if the base station does not configure the orthogonal mask of the demodulation reference signal of the user equipment, the user The orthogonal mask of the demodulation reference signal of the device is disabled by default. For example, the user equipment first determines whether the OCC enable/disable signaling from the base station is received. If no signaling is received, the user equipment does not use the OCC for the uplink demodulation reference signal; if the signaling is received, The user equipment continues to determine whether the OCC indicated by the signaling is enabled. When the OCC indicated by the signaling is not enabled, the user equipment does not use the OCC for the uplink demodulation reference signal. When the OCC indicated by the signaling is enabled, the user equipment The OCC is used for the uplink demodulation reference signal. (1) The indication information is used to indicate the cyclic shift of the demodulation reference signal and the orthogonal mask of the demodulation reference signal, and all states indicated by the indication information include one or more of the following: The demodulation reference signals of the layers use the same orthogonal mask, that is, the orthogonal mask index of each layer is the same as the orthogonal mask index of the first layer; There are partial states indicating that the orthogonal mask indices of the first layer and the second layer are the same, the orthogonal mask indexes of the third layer and the fourth layer are the same, and the orthogonal mask indexes of the third layer and the fourth layer are different from The orthogonal mask index of the first layer and the second layer; there are partial states indicating that the orthogonal mask indexes of the first layer and the third layer are the same, and the orthogonal mask indexes of the second layer and the fourth layer are the same, and the The orthogonal mask indices of Layer 2 and Layer 4 are different from the orthogonal mask indices of Layer 1 and Layer 3.
( 2 ) 指示信息用于指示解调参考信号的循环移位和解调参考信号的正 交掩码和 SGH方式 当 3bits信令指示解调参考信号的 SGH方式为子帧跳转时： 各层数据的 解调参考信号使用相同的 OCC。 当 3bits信令指示解调参考信号的 SGH方式为时隙跳转时： 当下行控制信息格式调度目标用户设备发送空间复用层数 υ≤ 2的多天 线端口传输的 PUSCH时， 各层数据的解调参考信号使用相同的 OCC; (2) The indication information is used to indicate the cyclic shift of the demodulation reference signal and the orthogonal mask and the SGH mode of the demodulation reference signal. When the 3 bits signaling indicates that the SGH mode of the demodulation reference signal is a subframe jump: each layer The demodulation reference signal of the data uses the same OCC. When the 3 bits signaling indicates that the SGH mode of the demodulation reference signal is a time slot hopping: when the downlink control information format scheduling target user equipment transmits the PUSCH transmitted by the multi-antenna port with the spatial multiplexing layer υ ≤ 2, the data of each layer The demodulation reference signal uses the same OCC;
3bits 信令指示 OCC; 当下行控制信息格式调度目标用户设备发送空间 复用层数 υ > 2的多天线端口传输的 PUSCH时， 各层数据的解调参考信号使 用不同的 OCC。 例如， 当下行控制信息格式调度目标用户设备发送空间复用层数 v > 2的 多天线端口传输的 PUSCH,且该 3bits信令指示解调参考信号的 SGH方式为 时隙跳转时， 各层数据的解调参考信号使用不同的 OCC。 又例如， 当下行控制信息格式调度目标用户设备发送空间复用层数 υ > 2 的多天线端口传输的 PUSCH,且该 3bits信令指示解调参考信号的 SGH方式 为子帧跳转时， 各层数据的解调参考信号使用相同的 OCC。 其中， 3bits信令与空间复用层数 υ以及层序号 1联合指示对应层数据的 解调参考信号使用的 OCC。 优选地， 当下行控制信息格式调度目标用户设备发送单天线端口传输的The 3 bits signaling indicates the OCC; when the downlink control information format schedules the target user equipment to transmit the PUSCH transmitted by the multi-antenna port with the spatial multiplexing layer υ > 2, the demodulation reference signals of the respective layers of data use different OCCs. For example, when the downlink control information format scheduling target user equipment transmits a PUSCH transmitted by a multi-antenna port with a spatial multiplexing layer number v>2, and the 3 bits signaling indicates that the SGH mode of the demodulation reference signal is a time slot jump, each layer The demodulation reference signals for the data use different OCCs. For example, when the downlink control information format scheduling target user equipment transmits the PUSCH transmitted by the multi-antenna port with the spatial multiplexing layer number υ > 2, and the 3 bits signaling indicates that the SGH mode of the demodulation reference signal is a subframe jump, each The demodulation reference signals of the layer data use the same OCC. The 3 bits signaling and the spatial multiplexing layer υ and the layer sequence number 1 jointly indicate the OCC used by the demodulation reference signal of the corresponding layer data. Preferably, when the downlink control information format schedules the target user equipment to transmit the single antenna port transmission
PUSCH, 且用户设备的协议只支持单天线端口传输时， 解调参考信号不使用 OCC, 该 3bits信令不用于配置 OCC。 优选地， 当下行控制信息格式调度目标用户设备发送单天线端口传输的For the PUSCH, and the protocol of the user equipment only supports single-antenna port transmission, the demodulation reference signal does not use OCC, and the 3bits signaling is not used to configure the OCC. Preferably, when the downlink control information format schedules the target user equipment to transmit the single antenna port transmission
PUSCH时， 该解调参考信号使用 OCC , 该 3bits信令配置 OCC的方式与当 下行控制信息格式调度目标用户设备发送空间复用层数 υ = 1的多天线端口传 输的 PUSCH时， 3bits信令配置 OCC的方式相同。 优选地， 该调度目标用户设备发送单天线端口传输的 PUSCH的下行控 制信息格式包括 DCI format 0。 在另一个实施例中， 还提供了一种解调参考信号的指示系统， 包括： 基 站和用户设备， 其中： 基站用于向用户设备发送指示信息， 指示信息用于指示以下至少之一： 解调参考信号的循环移位、 解调参考信号的正交掩码、 解调参考信号的序列 跳转 /序列组跳转 SGH方式； 用户设备用于根据接收到的指示信息， 向基站 发送数据和解调参考信号。 优选地， 基站还用于将指示信息携带于下行控制信息格式中， 其中， 下 行控制信息格式包括用于调度单天线端口传输的物理上行共享信道的下行控 制信息格式和 /或用于调度多天线端口传输的物理上行共享信道的下行控制 信息格式。 下面对上述各个实施例的变型实施例进行说明。 方式一： 针对不同的空间复用层数分别使用不同的表示方式 对 Rel- 10及其后续版本的用户设备： 当所述下行控制信息格式调度所述 目标用户设备发送单天线端口传输的 PUSCH,或发送空间复用层数 " = 1的多 天线端口传输的 PUSCH时， 3bits信令如表 3所示： 表 3 In the case of PUSCH, the demodulation reference signal uses OCC, and the 3bits signaling configures the OCC mode and when the downlink control information format schedules the target user equipment to transmit the PUSCH transmitted by the multi-antenna port with the spatial multiplexing layer υ=1, 3bits signaling The way to configure OCC is the same. Preferably, the downlink control information format of the PUSCH transmitted by the scheduling target user equipment for transmitting the single antenna port includes DCI format 0. In another embodiment, an indication system for demodulating a reference signal is provided, including: a base station and a user equipment, where: the base station is configured to send indication information to the user equipment, where the indication information is used to indicate at least one of the following: The cyclic shift of the reference signal, the orthogonal mask of the demodulation reference signal, and the sequence jump/sequence group jump SGH mode of the demodulation reference signal; the user equipment is configured to send data to the base station according to the received indication information. Demodulate the reference signal. Preferably, the base station is further configured to carry the indication information in a downlink control information format, where the downlink control information format includes a downlink control information format for scheduling a physical uplink shared channel for single antenna port transmission, and/or for scheduling multiple antennas. The downlink control information format of the physical uplink shared channel transmitted by the port. Modifications of the above various embodiments will be described below. Manner 1: The user equipment of the Rel-10 and its subsequent versions are respectively used in different spatial multiplexing layers: when the downlink control information format schedules the target user equipment to send the PUSCH transmitted by the single antenna port, Or when transmitting the PUSCH transmitted by the multi-antenna port with the spatial multiplexing layer number = 1 , the 3bits signaling is shown in Table 3: Table 3
3bits信令 "(2) (0) OCC SGH方式 3bits signaling" (2) (0) OCC SGH mode
000 0 [ 1, 1] 时隙兆转  000 0 [ 1, 1] slot megatransfer
001 6 [ι,ι] 时隙兆转  001 6 [ι,ι] time slot mega-transfer
010 3 [ι,ι] 时隙兆转  010 3 [ι,ι] time slot megatransfer
011 4 [ι,-ι] 子帧跳转  011 4 [ι,-ι] Subframe jump
100 2 [ι,ι] 子帧跳转  100 2 [ι,ι] sub-frame jump
101 8 [ι,ι] 子帧跳转  101 8 [ι,ι] Subframe jump
110 10 [ι,-ι] 子帧跳转 111 9 [ 1, 1] 时隙兆转 或者， 如表 4所示: 表 4
Figure imgf000015_0002
110 10 [ι,-ι] Subframe jump 111 9 [ 1, 1] Time slot mega- or, as shown in Table 4: Table 4
Figure imgf000015_0002
或者， 如表 5所示: 表 5
Figure imgf000015_0003
Or, as shown in Table 5: Table 5
Figure imgf000015_0003
其中， 对于表 5的 SGH方式， 3bits信令表示的 8种状态中， 有 n种状 态的 SGH方式为时隙兆转， 有 8-n种^！ 态的 SGH方式为子帧兆转， η为 0 至 8之间的某一整数。 或者， 如表 6所示: 表 6 Among them, for the SGH method in Table 5, among the eight states indicated by the 3bits signaling, there are n states of the SGH mode, which are slot mega-transitions, and there are 8-n kinds of ^! The SGH mode of the state is a sub-frame mega-transition, and η is an integer between 0 and 8. Or, as shown in Table 6: Table 6
Figure imgf000015_0001
111 9 [1,-1] 其中， 对于表 6的 SGH方式， 3bits信令表示的 8种状态中， 有 n种状 态的 SGH方式为时隙兆转， 有 8-η种^！ 态的 SGH方式为子帧兆转， η为 0 至 8之间的某一整数。 或者， 如表 7所示: 表 7
Figure imgf000015_0001
111 9 [1,-1] Among them, for the SGH method of Table 6, among the eight states indicated by the 3bits signaling, there are n states of the SGH mode that are slot mega-transitions, and there are 8-n kinds of ^! The SGH mode of the state is a sub-frame mega-transition, and η is an integer between 0 and 8. Or, as shown in Table 7: Table 7
Figure imgf000016_0001
Figure imgf000016_0001
其中， 对于表 7的 SGH方式， 3bits信令表示的 8种状态中， 有 n种状 态的 SGH方式为时隙兆转， 有 8-η种^！ 态的 SGH方式为子帧兆转， η为 0 至 8之间的某一整数。 或者， 如表 8所示: 表 8 Among them, for the SGH method of Table 7, among the eight states indicated by the 3bits signaling, there are n states of the SGH mode, which are slot mega-transitions, and there are 8-n kinds of ^! The SGH mode of the state is a sub-frame mega-transition, and η is an integer between 0 and 8. Or, as shown in Table 8: Table 8
Figure imgf000016_0002
Figure imgf000016_0002
其中， 对于表 8的 SGH方式， 3bits信令表示的 8种状态中， 有 n种状 态的 SGH方式为时隙兆转， 有 8-η种^！ 态的 SGH方式为子帧兆转， η为 0 至 8之间的某一整数。 当下行控制信息格式调度目标用户设备发送空间复用层数 " = 2的多天 线端口传输的 PUSCH时， 层间循环移位差 Δ = 6 , 3bits信令如表 9所示: 表 9Among them, for the SGH method of Table 8, among the eight states indicated by the 3bits signaling, there are n states in which the SGH mode is a time slot mega-transition, and there are 8-n kinds of ^! The SGH mode of the state is a sub-frame mega-transition, and η is an integer between 0 and 8. When the downlink control information format schedules the target user equipment to send the number of spatial multiplexing layers "= 2 days When the PUSCH transmitted by the line port, the inter-layer cyclic shift difference Δ = 6 , the 3bits signaling is shown in Table 9: Table 9
Figure imgf000017_0001
Figure imgf000017_0001
或者， 如表 10所示: 表 10 Or, as shown in Table 10: Table 10
Figure imgf000017_0002
Figure imgf000017_0002
当下行控制信息格式调目标用户设备发送空间复用层数 υ = 3的多天线 端口传输的 PUSCH时， 层间循环移位差 = 4 , 3bits信令如表 11所示： 表 11
Figure imgf000017_0003
Figure imgf000018_0001
When the downlink control information format modulates the target user equipment to transmit the PUSCH transmitted by the multi-antenna port with the spatial multiplexing layer υ =1, the inter-layer cyclic shift difference is 4, and the 3 bits signaling is as shown in Table 11: Table 11
Figure imgf000017_0003
Figure imgf000018_0001
当下行控制信息格式调度目标用户设备发送空间复用层数 υ = 4的多天 线端口传输的 PUSCH时， 层间循环移位差 = 3 , 3bits信令如表 12所示： 表 12 When the downlink control information format schedules the target user equipment to transmit the PUSCH transmitted by the multi-antenna port with the spatial multiplexing layer number υ = 4, the inter-layer cyclic shift difference = 3, and the 3bits signaling is shown in Table 12: Table 12
Figure imgf000018_0002
方式二： 对不同的空间复用层数釆用统一的表示形式 下面的表格中， 表示下行控制信令中循环移位域指示的层 所使 用的循环移位， [w( (0) 表示层 所使用的正交掩码。
Figure imgf000018_0002
Manner 2: Use a uniform representation for different spatial multiplexing layers. The following table shows the cyclic shift used by the layer indicated by the cyclic shift domain in the downlink control signaling. [w ( (0) indicates the layer The orthogonal mask used.
上行相关 DCI格式的循环移位域到"^ R 和 rt (Q) w(") (1)J的映射 Mapping of the cyclic shift domain of the uplink-related DCI format to "^ R and rt (Q ) w( " ) (1) J
Figure imgf000019_0001
或 上行相关 DCI格式的循环移位域到" DMR 和 W W w」的映射
Figure imgf000019_0001
Or the mapping of the cyclic shift domain of the uplink related DCI format to " DMR and WW w "
Figure imgf000019_0002
或 上行相关 DCI格式的循环移位域到" DMR 和 W W w」的映射 上行相关 DCI格式的循 "DMRS.j [w(¾ (0) w p (\)
Figure imgf000019_0002
Or the uplink-related DCI format cyclic shift domain to " DMR and WW w " mapping uplink related DCI format according to "DMRS.j [w ( 3⁄4 (0) w p (\)
环移位域 ^ = 0 ρ = P = 2 ]5 = 3 ^ = 0 ρ = ]5 = 3 Ring shift domain ^ = 0 ρ = P = 2 ]5 = 3 ^ = 0 ρ = ]5 = 3
000 0 6 3 9 [ι,ι] [1,1] [ι,-ι] [ι,-ι]000 0 6 3 9 [ι,ι] [1,1] [ι,-ι] [ι,-ι]
001 6 0 9 3 [1, i] [1, i] [1,1] [1,1]001 6 0 9 3 [1, i] [1, i] [1,1] [1,1]
010 3 9 6 0 [ι,-ι] [ι,-ι] [1,1] [1,1]010 3 9 6 0 [ι,-ι] [ι,-ι] [1,1] [1,1]
011 4 10 7 1 [ι,-ι] [ι,-ι] [ι,-ι] [ι,-ι] 100 2 8 5 11 [1,1] [1,1] [ι,-ι] [ι,-ι]011 4 10 7 1 [ι,-ι] [ι,-ι] [ι,-ι] [ι,-ι] 100 2 8 5 11 [1,1] [1,1] [ι,-ι] [ι,-ι]
101 8 2 11 5 [1, i] [1, i] [1, i] [1, i]101 8 2 11 5 [1, i] [1, i] [1, i] [1, i]
110 10 4 1 7 [1,-1] [ι,-ι] [1, i] [1, i]110 10 4 1 7 [1,-1] [ι,-ι] [1, i] [1, i]
111 9 3 0 6 [1,-1] [ι,-ι] [ι,-ι] [ι,-ι] 或 上行相关 DCI格式的循环移位域到" DMR 和 W W w」的映射 111 9 3 0 6 [1,-1] [ι,-ι] [ι,-ι] [ι,-ι] or the mapping of the cyclic shift domain of the uplink related DCI format to " DMR and WW w "
Figure imgf000020_0001
或 上行相关 DCI格式的循环移位域到" DMR 和 W W w」的映射
Figure imgf000020_0001
Or the mapping of the cyclic shift domain of the uplink related DCI format to " DMR and WW w "
Figure imgf000020_0002
或 上行相关 DCI格式的循环移位域到" DMR 和 W W w」的映射 上行相关 DCI格式的循 "DMRS.j [w(¾ (0) w p (\)
Figure imgf000020_0002
Or the uplink-related DCI format cyclic shift domain to " DMR and WW w " mapping uplink related DCI format according to "DMRS.j [w ( 3⁄4 (0) w p (\)
环移位域 ^ = 0 ρ = P = 2 ]5 = 3 ^ = 0 ρ = ]5 = 3 Ring shift domain ^ = 0 ρ = P = 2 ]5 = 3 ^ = 0 ρ = ]5 = 3
000 0 6 3 9 [ι,ι] [1,1] [ι,-ι] [ι,-ι]000 0 6 3 9 [ι,ι] [1,1] [ι,-ι] [ι,-ι]
001 6 0 9 3 [1, i] [1, i] [1,1] [1,1]001 6 0 9 3 [1, i] [1, i] [1,1] [1,1]
010 3 9 6 0 [ι,-ι] [ι,-ι] [1,1] [1,1]010 3 9 6 0 [ι,-ι] [ι,-ι] [1,1] [1,1]
011 4 10 7 1 [1, i] [1, i] [ι,-ι] [ι,-ι]011 4 10 7 1 [1, i] [1, i] [ι,-ι] [ι,-ι]
100 2 8 5 11 [ι,-ι] [ι,-ι] [1, i] [1, i] 101 8 2 11 5 [1, i] [1,-1] [1,-1] [1, i]100 2 8 5 11 [ι,-ι] [ι,-ι] [1, i] [1, i] 101 8 2 11 5 [1, i] [1,-1] [1,-1] [1, i]
110 10 4 1 7 [1,-1] [1,-1] [ι,-ι] [ι,-ι]110 10 4 1 7 [1,-1] [1,-1] [ι,-ι] [ι,-ι]
111 9 3 0 6 [1,-1] [1,1] [1, i] [ι,-ι] 或 上行相关 DCI格式的循环移位域到" DMR 和 W W w」的映射 111 9 3 0 6 [1,-1] [1,1] [1, i] [ι,-ι] or the mapping of the cyclic shift domain of the uplink related DCI format to " DMR and WW w "
Figure imgf000021_0001
或 上行相关 DCI格式的循环移位域到" DMR 和 W W w」的映射
Figure imgf000021_0001
Or the mapping of the cyclic shift domain of the uplink related DCI format to " DMR and WW w "
Figure imgf000021_0002
或 上行相关 DCI格式的循环移位域到" DMR 和 W W w」的映射 上行相关 DCI格式的循 "DMRS.j [w(¾ (0) w p (\)
Figure imgf000021_0002
Or the uplink-related DCI format cyclic shift domain to " DMR and WW w " mapping uplink related DCI format according to "DMRS.j [w ( 3⁄4 (0) w p (\)
环移位域 ^ = 0 ρ = P = 2 ]5 = 3 ^ = 0 ρ = ]5 = 3 Ring shift domain ^ = 0 ρ = P = 2 ]5 = 3 ^ = 0 ρ = ]5 = 3
000 0 6 3 9 [ι,ι] [1,1] [ι,-ι] [ι,-ι]000 0 6 3 9 [ι,ι] [1,1] [ι,-ι] [ι,-ι]
001 6 0 9 3 [ι,-ι] [ι,-ι] [ι,-ι] [ι,-ι]001 6 0 9 3 [ι,-ι] [ι,-ι] [ι,-ι] [ι,-ι]
010 3 9 6 0 [ι,-ι] [ι,-ι] [1,1] [1,1]010 3 9 6 0 [ι,-ι] [ι,-ι] [1,1] [1,1]
011 4 10 7 1 [ι,-ι] [ι,-ι] [1,1] [1,1]011 4 10 7 1 [ι,-ι] [ι,-ι] [1,1] [1,1]
100 2 8 5 11 [ι,ι] [1,1] [ι,-ι] [ι,-ι]100 2 8 5 11 [ι,ι] [1,1] [ι,-ι] [ι,-ι]
101 8 2 11 5 [ι,ι] [1,1] [1,1] [1, i] 110 10 4 1 7 [1, 1] [1,-1] [1, i] [1,-1]101 8 2 11 5 [ι,ι] [1,1] [1,1] [1, i] 110 10 4 1 7 [1, 1] [1,-1] [1, i] [1,-1]
111 9 3 0 6 [1,-1] [1, 1] [1,-1] [1, 1] 综上所述， 通过本发明的上述实施例， 解决了相关技术中的指示方法无 法满足上行多天线端口传输的要求的问题， 进而可以对解调参考信号的参数 进行指示， 以满足上行多天线端口传输的要求。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布 在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程 序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 并 且在某些情况下， 可以以不同于此处的顺序执行所示出或描述的步骤， 或者 将它们分别制作成各个集成电路模块， 或者将它们中的多个模块或步骤制作 成单个集成电路模块来实现。 这样， 本发明不限制于任何特定的硬件和软件 结合。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。 111 9 3 0 6 [1,-1] [1, 1] [1,-1] [1, 1] In summary, the above embodiment of the present invention solves the problem that the indication method in the related art cannot be satisfied. The requirement of uplink multi-antenna port transmission can further indicate the parameters of the demodulation reference signal to meet the requirements of uplink multi-antenna port transmission. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any particular combination of hardware and software. The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

权 利 要 求 书 Claim
1. 一种上行解调参考信号的指示方法， 其特征在于， 包括： A method for indicating an uplink demodulation reference signal, comprising:
基站向用户设备发送指示信息， 所述指示信息用于指示以下至少之 一： 解调参考信号的循环移位、 解调参考信号的正交掩码、 解调参考信 号的序列跳转 /序列组跳转 SGH方式；  The base station sends indication information to the user equipment, where the indication information is used to indicate at least one of: cyclic shift of the demodulation reference signal, orthogonal mask of the demodulation reference signal, sequence jump/sequence group of the demodulation reference signal Jump to SGH mode;
所述用户设备根据接收到的所述指示信息， 向所述基站发送数据和 解调参考信号。  And the user equipment sends data and a demodulation reference signal to the base station according to the received indication information.
2. 根据权利要求 1所述的方法， 其特征在于， 所述指示信息携带于下行控 制信息格式中， 其中， 所述下行控制信息格式包括用于调度单天线端口 传输的物理上行共享信道的下行控制信息格式和 /或用于调度多天线端 口传输的物理上行共享信道的下行控制信息格式。 The method according to claim 1, wherein the indication information is carried in a downlink control information format, where the downlink control information format includes a downlink for a physical uplink shared channel for scheduling single antenna port transmission. Control information format and/or downlink control information format for scheduling a physical uplink shared channel for multi-antenna port transmission.
3. 根据权利要求 1所述的方法， 其特征在于， 所述基站通过高层信令配置 所述用户设备的解调参考信号的正交掩码是否使能； 如果所述基站没有 对所述用户设备的解调参考信号的正交掩码进行配置， 则所述用户设备 的解调参考信号的正交掩码默认为不使能。 The method according to claim 1, wherein the base station configures, by using higher layer signaling, whether an orthogonal mask of the demodulation reference signal of the user equipment is enabled; if the base station does not have the user The orthogonal mask of the demodulation reference signal of the device is configured, and the orthogonal mask of the demodulation reference signal of the user equipment is disabled by default.
4. 根据权利要求 1所述的方法， 其特征在于， 在所述用户设备的协议仅支 持所述用户设备在物理上行共享信道上釆用单天线端口传输的情况下， 或者在所述基站配置所述用户设备的解调参考信号的正交掩码为不使能 的情况下， 所述指示信息用于指示解调参考信号的循环移位。 The method according to claim 1, wherein the protocol of the user equipment only supports the user equipment to transmit by using a single antenna port on a physical uplink shared channel, or configured in the base station When the orthogonal mask of the demodulation reference signal of the user equipment is not enabled, the indication information is used to indicate a cyclic shift of the demodulation reference signal.
5. 根据权利要求 1所述的方法， 其特征在于， 在所述用户设备的协议支持 所述用户设备在物理上行共享信道上釆用多天线端口和 /或单天线端口 传输的情况下， 所述指示信息用于指示解调参考信号的循环移位和解调 参考信号的正交掩码和 /或 SGH方式。 The method according to claim 1, wherein, in a case where the protocol of the user equipment supports the user equipment to transmit by using a multi-antenna port and/or a single antenna port on a physical uplink shared channel, The indication information is used to indicate a cyclic shift of the demodulation reference signal and an orthogonal mask and/or SGH mode of the demodulation reference signal.
6. 根据权利要求 4或 5所述的方法， 其特征在于， 所述指示信息所在的下 行控制信息格式包括： 下行控制信息格式 DCI format 0。 The method according to claim 4 or 5, wherein the format of the downlink control information in which the indication information is located includes: a downlink control information format DCI format 0.
7. 根据权利要求 5所述的方法， 其特征在于， 7. The method of claim 5, wherein
所述指示信息用于指示解调参考信号的循环移位包括： 所述指示信 息用于指示一个层的解调参考信号的循环移位； 居所述指示信息所指示的层的解调参考信号的循环移位计算其他 层的解调参考信号的循环移位。 The indication information is used to indicate a cyclic shift of the demodulation reference signal, where the indication information is used to indicate a cyclic shift of a demodulation reference signal of one layer; The cyclic shift of the demodulation reference signal of the layer indicated by the indication information calculates a cyclic shift of the demodulation reference signal of the other layer.
8. 根据权利要求 5 所述的方法， 其特征在于， 所述指示信息用于指示正交 掩码包括以下至少之一： 指示各个层的解调参考信号使用相同的正交掩码； 指示第 1层和第 2层的正交掩码索引相同， 第 3层和第 4层的正交 掩码索引相同， 且所述第 3层和所述第 4层的正交掩码索引不同于所述 第 1层和所述第 2层的正交掩码索引； 指示所述第 1层和所述第 3层的正交掩码索引相同， 所述第 2层和 所述第 4层的正交掩码索引相同， 且所述第 2层和所述第 4层的正交掩 码索引不同于所述第 1层和所述第 3层的正交掩码索引。 The method according to claim 5, wherein the indication information is used to indicate that the orthogonal mask comprises at least one of: indicating that the demodulation reference signals of the respective layers use the same orthogonal mask; The orthogonal mask indices of the first layer and the second layer are the same, the orthogonal mask indexes of the third layer and the fourth layer are the same, and the orthogonal mask indexes of the third layer and the fourth layer are different from An orthogonal mask index of the first layer and the second layer; indicating that the orthogonal mask indexes of the first layer and the third layer are the same, and the second layer and the fourth layer are positive The cross-mask index is the same, and the orthogonal mask indexes of the second layer and the fourth layer are different from the orthogonal mask indexes of the first layer and the third layer.
9. 根据权利要求 5所述的方法， 其特征在于， 所述指示信息用于指示正交 掩码包括： The method according to claim 5, wherein the indication information is used to indicate that the orthogonal mask comprises:
在所述指示信息所在的下行控制信息格式用于调度所述用户设备发 送空间复用层数小于或等于二的情况下， 所述指示信息指示各个层的解 调参考信号使用相同的正交掩码。  When the downlink control information format in which the indication information is used is used to schedule the user equipment to send the spatial multiplexing layer number less than or equal to two, the indication information indicates that the demodulation reference signals of the respective layers use the same orthogonal mask. code.
10. 根据权利要求 5所述的方法， 其特征在于， 所述指示信息用于指示正交 掩码包括： The method according to claim 5, wherein the indication information is used to indicate that the orthogonal mask comprises:
在所述指示信息所在的下行控制信息格式用于调度所述用户设备发 送空间复用层数大于二的情况下， 并且， 所述指示信息指示的 SGH方式 为子帧跳转时， 所述指示信息指示各个层的解调参考信号使用相同的正 交掩码。  When the downlink control information format in which the indication information is used is used to schedule the user equipment to send the spatial multiplexing layer number to be greater than two, and the SGH mode indicated by the indication information is a subframe jump, the indication The information indicates that the demodulation reference signals of the respective layers use the same orthogonal mask.
11. 根据权利要求 4或 5所述的方法， 其特征在于， 在所述指示信息所在的 下行控制信息格式用于调度所述用户设备发送空间复用层数为一的情况 下， 所述指示信息指示的解调参考信号的循环移位值的范围为： 0、 2、 3、 4、 6、 8、 9、 10。  The method according to claim 4 or 5, wherein, when the downlink control information format in which the indication information is located is used to schedule the user equipment to send the number of spatial multiplexing layers to one, the indication The cyclic shift value of the demodulation reference signal indicated by the information ranges from 0, 2, 3, 4, 6, 8, 9, and 10.
12. 根据权利要求 1至 5中任一项所述的方法， 其特征在于， 所述 SGH方式 包括以下之一： 时隙兆转、 子帧兆转。 The method according to any one of claims 1 to 5, wherein the SGH mode comprises one of the following: a time slot mega-transition, a sub-frame mega-transition.
13. 根据权利要求 12所述的方法， 其特征在于， 由高层信令配置所述 SGH 是否使能， 或者由高层信令配置 SGH的方式， 或者由高层信令联合配置 SGH是否使能以及 SGH的方式。 The method according to claim 12, wherein the SGH is configured by high layer signaling, or the SGH is configured by high layer signaling, or the SGH is enabled by the high layer signaling and the SGH is enabled. The way.
14. 根据权利要求 1至 5中任一项所述的方法， 其特征在于， 所述指示信息 为 3比特的信令。 The method according to any one of claims 1 to 5, wherein the indication information is 3-bit signaling.
15. 根据权利要求 14所述的方法， 其特征在于， 所述 3比特的信令所表示的 8种状态中， 有 n种状态的 SGH方式为时隙跳转， 有 8-n种状态的 SGH 方式为子帧兆转， 其中， n为 0至 8之间的一个整数。 The method according to claim 14, wherein, among the eight states represented by the 3-bit signaling, the SGH mode of the n states is a slot jump, and there are 8-n states. The SGH mode is a sub-frame mega-transition, where n is an integer between 0 and 8.
16. —种上行解调参考信号的指示系统， 包括： 基站和用户设备， 其特征在 于： 16. An indication system for an uplink demodulation reference signal, comprising: a base station and a user equipment, characterized by:
所述基站用于向所述用户设备发送指示信息， 所述指示信息用于指 示以下至少之一： 解调参考信号的循环移位、 解调参考信号的正交掩码、 解调参考信号的序列跳转 /序列组跳转 SGH方式；  The base station is configured to send indication information to the user equipment, where the indication information is used to indicate at least one of: cyclic shift of a demodulation reference signal, orthogonal mask of a demodulation reference signal, and demodulation of a reference signal Sequence jump/sequence group jump SGH mode;
所述用户设备用于根据接收到的指示信息， 向所述基站发送数据和 解调参考信号。  The user equipment is configured to send data and a demodulation reference signal to the base station according to the received indication information.
17. 根据权利要求 16所述的系统， 其特征在于， 所述基站还用于将所述指示 信息携带于下行控制信息格式中， 其中， 所述下行控制信息格式包括用 于调度单天线端口传输的物理上行共享信道的下行控制信息格式和 /或 用于调度多天线端口传输的物理上行共享信道的下行控制信息格式。 The system according to claim 16, wherein the base station is further configured to carry the indication information in a downlink control information format, where the downlink control information format includes a single antenna port transmission for scheduling. The downlink control information format of the physical uplink shared channel and/or the downlink control information format of the physical uplink shared channel for scheduling multi-antenna port transmission.
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