WO2016070711A1 - Procédé et dispositif de traitement de canal physique de liaison descendante - Google Patents

Procédé et dispositif de traitement de canal physique de liaison descendante Download PDF

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Publication number
WO2016070711A1
WO2016070711A1 PCT/CN2015/092429 CN2015092429W WO2016070711A1 WO 2016070711 A1 WO2016070711 A1 WO 2016070711A1 CN 2015092429 W CN2015092429 W CN 2015092429W WO 2016070711 A1 WO2016070711 A1 WO 2016070711A1
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Prior art keywords
reference signal
state information
channel state
resource
information reference
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PCT/CN2015/092429
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English (en)
Chinese (zh)
Inventor
邢艳萍
潘学明
沈祖康
徐伟杰
高雪娟
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电信科学技术研究院
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Publication of WO2016070711A1 publication Critical patent/WO2016070711A1/fr

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for processing a physical downlink channel.
  • a PDCCH Physical Downlink Control Channel
  • N Orthogonal Frequency Division Multiplexing
  • the number of symbols of the PDCCH (that is, the number of control region symbols) is indicated by a PCFICH (Physical Control Format Indicator Channel).
  • the PDCCH is distributed over the entire system bandwidth in the frequency domain to obtain a frequency diversity gain.
  • the original PDCCH region still uses the original transmission and reception technologies and uses the original PDCCH resources.
  • This part of the PDCCH region is called the legacy PDCCH. Physical downlink control channel) domain.
  • the EPDCCH occupies a time-frequency resource transmission other than the legacy PDCCH domain, and uses a part of resources of the original PDSCH (Physical Downlink Shared Channel) to be multiplexed with the PDSCH by frequency division, as shown in FIG. Schematic diagram of the structure of the downlink channel.
  • a CSI-RS Channel State Information-Reference Signal, also referred to as a channel state information pilot signal
  • RE Resource Element
  • the resource unit should not overlap with the RE occupied by the PDCCH in the PRB.
  • the REs occupied by the EPDCCH in the PRB may overlap with the REs occupied by the CSI-RS, and there is a possibility of collision.
  • MTC Machine Type
  • Communication machine type communication
  • MTC UE User's Equipment, user equipment, ie, the terminal
  • a UE type is newly defined.
  • the low-cost MTC UE supports only the 1.4 MHz bandwidth, which is different from the traditional LTE UE.
  • the physical downlink control channel transmitted in the data area may also collide with the RE occupied by the CSI-RS.
  • the embodiments of the present disclosure provide a method and a device for processing a physical downlink channel, which are used to solve the problem that an RE used by a physical downlink channel conflicts with an RE used by a CSI-RS.
  • An embodiment of the present disclosure provides a method for processing a physical downlink channel, where the method includes:
  • the method 1 includes: determining all REs in the subframes of the CSI-RS that may be occupied by the CSI-RS, and performing rate matching and physical resource mapping on the physical downlink channel, and removing all possible CSI-RS sub-configurations. All REs in the frame that may be occupied by zero-power ZP CSI-RS and non-zero-power NZPCSI-RS;
  • the method 2 includes: determining, according to the resource configuration information of the CSI-RS for rate matching, the RE occupied by the CSI-RS, and performing rate matching and physical resource mapping on the physical downlink channel, removing the determined CSI. -RE occupied by the RS;
  • the third method includes: determining the RE or the NZP CSI-RS actually occupied by the NZP CSI-RS and the RE actually occupied by the ZP CSI-RS, and performing rate matching on the physical downlink channel does not remove all the actual occupied by the CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is notified to the terminal by using a system message or terminal specific signaling.
  • system message, the terminal-specific signaling, and one or a combination of other messages sent before the system message or the terminal-specific signaling are sent through a physical downlink channel;
  • the method 1 or the method 3 is used to determine the RE occupied by the CSI-RS, and the CSI-RS according to the determined
  • the occupied RE performs rate matching and physical resource mapping on the physical downlink channel used for transmitting system messages or terminal-specific signaling or the other messages.
  • the resource configuration information of the CSI-RS for rate matching is used only for rate matching and resource mapping of the physical downlink channel, and the resource configuration information of the measured CSI-RS is notified to the terminal by using dedicated signaling.
  • the resource configuration information of the CSI-RS for measurement includes only the NZP CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is CSI-RS resource configuration information separately configured for transmit diversity, and the CSI-RS resource configuration information satisfies a resource configuration requirement of transmit diversity; or ,
  • the resource configuration requirement that satisfies the transmit diversity refers to that the two-frequency is continuous and orthogonal between the REs other than the cell-specific pilot signal CRS (Cell-specific RS) on the available symbols under the 2-port transmit diversity.
  • CRS cell-specific pilot signal
  • the number of available REs in the frequency division multiplexing OFDM symbol is even; or, in 4-port transmit diversity, on the available symbols, every 4 frequency domains between REs except CRS are consecutive and the number of available REs in one OFDM symbol is 4. Integer multiple.
  • the RNTI Radio Network Tempory Identity
  • the downlink control information DCI type the search space type, and/or the physical channel type, in the first mode, the second mode, and the third mode. select.
  • the embodiment of the present disclosure further provides another method for processing a physical downlink channel, where the method includes:
  • the determining the RE that is occupied by the CSI-RS, and the method for performing physical resource mapping and de-rate matching on the physical downlink channel according to the determined RE that is occupied by the CSI-RS including mode 1 and mode 2 Or mode three;
  • the method 1 includes: determining all REs in the subframes of the CSI-RS that may be occupied by the CSI-RS, and performing physical resource mapping and de-rate matching on the physical downlink channel, and removing all possible configuration CSI-RSs. All REs in the subframe that may be occupied by zero-power ZP CSI-RS and non-zero-power NZP CSI-RS;
  • the method 2 includes: determining, according to the resource configuration information of the rate-matched CSI-RS, the RE occupied by the CSI-RS, and performing physical resource mapping and de-rate matching on the physical downlink channel, removing the determined RE occupied by CSI-RS;
  • the method 3 includes: determining all REs in the subframes that may be configured with the CSI-RS that may be occupied by the CSI-RS, and performing physical resource mapping and de-rate matching on the physical downlink channel, without removing any CSI-RS possible Occupied RE.
  • the resource configuration information of the CSI-RS for rate matching is notified to the terminal by using a system message or terminal specific signaling.
  • system message, the terminal-specific signaling, and one or a combination of other messages sent before the system message or the terminal-specific signaling are sent through a physical downlink channel;
  • the method 1 or the method 3 is used to determine the RE occupied by the CSI-RS, and the CSI-RS according to the determined
  • the occupied RE performs physical resource mapping and de-rate matching on the physical downlink channel for transmitting system messages or terminal-specific signaling or the other messages.
  • the resource configuration information of the CSI-RS for rate matching is only used to perform physical resource mapping and de-rate matching on the physical downlink channel, and the resource configuration information used for the measured CSI-RS is received by using dedicated signaling. .
  • the resource configuration information of the CSI-RS for measurement includes only the NZP CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is CSI-RS resource configuration information separately configured for transmit diversity, and the CSI-RS resource configuration information satisfies transmit diversity.
  • Resource allocation requirements or,
  • the resource configuration requirement that satisfies the transmit diversity refers to two consecutive frequencies and one orthogonal frequency division multiplexing OFDM symbol between the REs other than the cell-specific pilot signal CRS on the available symbols under the 2-port transmit diversity.
  • the number of available REs is even; or, under 4-port transmit diversity, on the available symbols, every 4 frequency domains between REs except CRS are consecutive and the number of available REs in one OFDM symbol is an integer multiple of 4.
  • An embodiment of the present disclosure provides a processing device for a physical downlink channel, including:
  • a determining unit configured to determine a resource unit RE occupied by the channel state information pilot signal CSI-RS
  • a processing unit configured to perform rate matching and physical resource mapping on the physical downlink channel according to the determined RE occupied by the CSI-RS.
  • the processing device further includes: a selecting unit;
  • the selecting unit is configured to select the RE that is determined to be occupied by the CSI-RS, and perform rate matching and physical resource mapping on the physical downlink channel according to the determined RE that is occupied by the CSI-RS, including mode 1 , mode two or mode three;
  • the determining unit is specifically configured to: determine all the REs in the subframes of the CSI-RS that may be occupied by the CSI-RS; the processing unit is specifically configured to perform rate matching on the physical downlink channel. When mapping with physical resources, remove all REs in the subframes that may be configured with CSI-RS that may be occupied by zero-power ZP CSI-RS and non-zero-power NZP CSI-RS;
  • the determining unit is specifically configured to: determine, according to the resource configuration information of the rate-matched CSI-RS, the RE that is occupied by the CSI-RS; the processing unit is specifically configured to: perform the physical downlink channel Removing the determined CSI-RS occupation when rate matching and physical resource mapping RE;
  • the determining unit is specifically configured to: determine an RE that is actually occupied by the NZP CSI-RS, and an RE that is actually occupied by the NZP CSI-RS and the ZP CSI-RS; the processing unit is specifically configured to: When the rate matching is performed, all the REs actually occupied by the CSI-RS are not removed, and when the physical resources are mapped to the physical downlink channel, the REs actually occupied by the CSI-RS are punctured.
  • the resource configuration information of the CSI-RS for rate matching is notified to the terminal by using a system message or terminal specific signaling.
  • system message, the terminal-specific signaling, and one or a combination of other messages sent before the system message or the terminal-specific signaling are sent through a physical downlink channel;
  • the selecting unit is specifically configured to: determine the RE occupied by the CSI-RS by using the mode 1 or the mode 3, and according to The determined RE occupied by the CSI-RS performs rate matching and physical resource mapping on the physical downlink channel used for transmitting system messages or terminal-specific signaling or the other messages.
  • the resource configuration information of the CSI-RS for rate matching is used only for rate matching and resource mapping of the physical downlink channel, and the resource configuration information of the measured CSI-RS is notified to the terminal by using dedicated signaling.
  • the resource configuration information of the CSI-RS for measurement includes only the NZP CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is CSI-RS resource configuration information separately configured for transmit diversity, and the CSI-RS resource configuration information satisfies a resource configuration requirement of transmit diversity; or ,
  • the resource configuration requirement that satisfies the transmit diversity refers to two consecutive frequencies and one orthogonal frequency division multiplexing OFDM symbol between the REs other than the cell-specific pilot signal CRS on the available symbols under the 2-port transmit diversity.
  • the number of available REs is even; or, under 4-port transmit diversity, on the available symbols, every 4 frequency domains between REs except CRS are consecutive and the number of available REs in one OFDM symbol is an integer multiple of 4.
  • the selecting unit is further configured to:
  • the wireless network temporary identifier RNTI type selecting, according to the wireless network temporary identifier RNTI type, the downlink control information DCI type, the search space type, and/or the physical channel type, in the first mode, the second mode, and the third mode.
  • the embodiment of the disclosure further provides another processing device for the physical downlink channel, including:
  • a determining unit configured to determine a resource unit RE occupied by the channel state information pilot signal CSI-RS
  • a processing unit configured to perform physical resource mapping and de-rate matching on the physical downlink channel according to the determined RE occupied by the CSI-RS.
  • the processing device further includes: a selecting unit;
  • the selecting unit is configured to select the RE that is determined to be occupied by the CSI-RS, and perform physical resource mapping and de-rate matching on the physical downlink channel according to the determined RE that is occupied by the CSI-RS, including a manner First, mode two or mode three;
  • the determining unit is specifically configured to: determine all REs in the subframes of the CSI-RS that may be occupied by the CSI-RS; the processing unit is specifically configured to: perform physical physics on the physical downlink channel. When resource mapping and de-rate matching, remove all REs in the subframes that may be configured with CSI-RS that may be occupied by zero-power ZP CSI-RS and non-zero-power NZP CSI-RS;
  • the determining unit is specifically configured to: determine, according to the resource configuration information of the rate-matched CSI-RS, the RE that is occupied by the CSI-RS; the processing unit is specifically configured to: perform the physical downlink channel When the physical resource mapping and the de-rate matching are performed, the determined RE occupied by the CSI-RS is removed;
  • the determining unit is specifically configured to: determine all REs that may be occupied by the CSI-RS in all subframes in which the CSI-RS may be configured; the processing unit is specifically configured to: perform physical physics on the physical downlink channel. When resource mapping and de-rate matching, no REs that may be occupied by CSI-RS are removed.
  • the resource configuration information of the CSI-RS for rate matching is notified to the terminal by using a system message or terminal specific signaling.
  • system message, the terminal-specific signaling, and one or a combination of other messages sent before the system message or the terminal-specific signaling are sent through a physical downlink channel;
  • the selection when transmitting the system message, the terminal-specific signaling, or the other message The unit is specifically configured to: determine the RE occupied by the CSI-RS according to the mode 1 or the mode 3, and determine the RE used by the CSI-RS according to the determined RE for the system message or the terminal.
  • the physical downlink channel of the signaling or the other message performs physical resource mapping and de-rate matching.
  • the resource configuration information of the CSI-RS for rate matching is only used to perform physical resource mapping and de-rate matching on the physical downlink channel, and the resource configuration information used for the measured CSI-RS is received by using dedicated signaling. .
  • the resource configuration information of the CSI-RS for measurement includes only the NZP CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is CSI-RS resource configuration information separately configured for transmit diversity, and the CSI-RS resource configuration information satisfies a resource configuration requirement of transmit diversity; or ,
  • the resource configuration requirement that satisfies the transmit diversity refers to two consecutive frequencies and one orthogonal frequency division multiplexing OFDM symbol between the REs other than the cell-specific pilot signal CRS on the available symbols under the 2-port transmit diversity.
  • the number of available REs is even; or, under 4-port transmit diversity, on the available symbols, every 4 frequency domains between REs except CRS are consecutive and the number of available REs in one OFDM symbol is an integer multiple of 4.
  • the selecting unit is further configured to:
  • the wireless network temporary identifier RNTI type selecting, according to the wireless network temporary identifier RNTI type, the downlink control information DCI type, the search space type, and/or the physical channel type, in the first mode, the second mode, and the third mode.
  • An embodiment of the present disclosure further provides a network side device, including: a processor; a memory connected to the processor through a bus interface, and configured to store programs and data used by the processor when performing operations; And a transceiver coupled to the processor and the memory via the bus interface and for receiving and transmitting data under control of the processor, the processor for reading a program in the memory, executing The following process: determining a resource unit occupied by a channel state information pilot signal, and performing rate matching and physical resource mapping on the physical downlink channel by the transceiver according to the determined resource unit occupied by the channel state information pilot signal.
  • An embodiment of the present disclosure further provides a user equipment, including: a processor; a memory connected to the processor through a bus interface, and configured to store programs and data used by the processor when performing operations; a transceiver coupled to the processor and the memory via the bus interface and for receiving and transmitting data under control of the processor, the processor for reading a program in the memory, performing the following The process: determining a resource unit occupied by the channel state information pilot signal, and performing physical resource mapping and de-rate matching on the physical downlink channel by using the transceiver according to the determined resource unit occupied by the channel state information pilot signal.
  • rate matching and physical resource mapping are performed according to the positions of the REs when the physical downlink channel is subjected to rate matching and physical resource mapping, so that the physical downlink can be resolved.
  • the problem that the RE used by the channel conflicts with the RE occupied by the CSI-RS.
  • FIG. 1 is a schematic structural diagram of a physical downlink channel in the prior art
  • FIG. 2 is a schematic flowchart of a physical downlink channel processing implemented by a network side according to an embodiment of the present disclosure
  • FIG. 3 is a schematic flowchart of processing a physical downlink channel implemented by a terminal side according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a physical downlink channel resource location according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of available resources in a PRB in a rate matching process according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of available resources in a PRB in a resource mapping process according to an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of a subframe position of a CSI-RS according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of a CSI-RS resource location in a PRB according to an embodiment of the present disclosure
  • FIG. 9 is a schematic diagram of available resources in a PRB in a rate matching and physical resource mapping process according to an embodiment of the present disclosure.
  • FIG. 10 is another process for performing rate matching and physical resource mapping in the embodiment of the present disclosure. Schematic diagram of available resources within a PRB;
  • FIG. 11 is a schematic diagram of a CSI-RS resource location in which a port in a PRB is configured as 0, 4, 5, and 9 in the embodiment of the present disclosure
  • FIG. 12 is a schematic diagram of another available resource in a PRB in a rate matching and physical resource mapping process according to an embodiment of the present disclosure
  • FIG. 13 is a schematic structural diagram of a processing apparatus for a physical downlink channel used in the process shown in FIG. 2 according to an embodiment of the present disclosure
  • FIG. 14 is a schematic structural diagram of a processing apparatus for a physical downlink channel used in the process shown in FIG. 3 according to an embodiment of the present disclosure
  • FIG. 15 is a schematic structural diagram of another apparatus for processing a physical downlink channel according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of another apparatus for processing a physical downlink channel according to an embodiment of the present disclosure.
  • FIG. 2 is a flowchart of a method for processing a physical downlink channel implemented by a network side device, where the process may be performed by a processing device of a physical downlink channel, and the device may be a base station or located in a base station.
  • the process specifically includes:
  • step S201 the RE occupied by the CSI-RS is determined.
  • all REs in the subframes of the CSI-RS that may be occupied by the CSI-RS may be determined, or the REs actually occupied by the CSI-RS may be determined according to the resource configuration information of the CSI-RS for rate matching. .
  • Step S202 Perform rate matching and physical resource mapping on the physical downlink channel according to the determined RE occupied by the CSI-RS.
  • the RE that may be occupied by the CSI-RS or the RE actually occupied may be removed; or the rate of the physical downlink channel may be measured.
  • the REs actually occupied by the CSI-RS are not removed, but the REs actually occupied by the CSI-RS are punctured when the physical resources are mapped to the physical downlink channel.
  • step S201 and step S202 There are three implementation manners of the processing flow of the physical downlink channel as described in the above steps S201 and S202. The three implementations of step S201 and step S202 are described in detail below.
  • all the REs that may be configured by the CSI-RS in the subframes that may be configured with the CSI-RS are determined, and when the rate matching and the physical resource mapping are performed on the physical downlink channel, all the subframes in which the CSI-RS may be configured are removed. It may be occupied by ZP CSI-RS (ZP is the English short for zero power, Zero transmission Power in English) and NZP CSI-RS (NZP is the abbreviation for non-zero power in English, and Non-Zero transmission Power for English).
  • the REs occupied by the CSI-RS are determined, and when the physical downlink channel is subjected to rate matching and physical resource mapping, the determined CSI-RS occupation is removed. RE.
  • the REs that are actually occupied by the NZP CSI-RS and the REs that are actually occupied by the ZP CSI-RS are determined.
  • the rate of the physical downlink channel is matched, all the REs actually occupied by the CSI-RS are not removed.
  • the physical downlink channel performs physical resource mapping the RE actually occupied by the CSI-RS is punctured.
  • the resource configuration information of the CSI-RS for rate matching is notified to the terminal by using a system message or terminal specific signaling.
  • the resource configuration information of the CSI-RS for rate matching is used only for rate matching and resource mapping of the physical downlink channel, and the resource configuration information of the measured CSI-RS is notified to the terminal by using dedicated signaling.
  • the resource configuration information of the CSI-RS for measurement includes only the NZP CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is CSI-RS resource configuration information that is separately configured for the transmit diversity, and the CSI-RS resource configuration information satisfies the resource configuration requirement of the transmit diversity; or, only one is configured.
  • CSI-RS resource configuration information for rate matching, and the CSI-RS resource configuration information satisfies resource configuration requirements of transmit diversity; or, only one set of CSI-RS resource configuration information for rate matching is configured, and the CSI is -RS resource configuration information does not consider launch
  • the resource configuration requirement of the diversity wherein the resource configuration requirement that satisfies the transmit diversity refers to the 2-port transmit diversity, where the two-two frequencies are consecutive between the REs other than the CRS and the number of available REs in one OFDM symbol is Even; or, under 4-port transmit diversity, on the available symbols, every 4 frequency domains between REs except CRS are consecutive and the number of available REs in one OFDM symbol is an integer multiple of 4.
  • the method 1 or the mode 3 may be used to determine the RE occupied by the CSI-RS, and according to the determined RE occupied by the CSI-RS, for the sending
  • the system message or terminal-specific signaling or the physical downlink channel of the other message performs rate matching and physical resource mapping.
  • one or more types of information such as a RNTI (Radio Network Tempory Identity) type, a DCI (Downlink Control Information) type, a search space type, and a physical channel type may be used.
  • RNTI Radio Network Tempory Identity
  • DCI Downlink Control Information
  • search space type search space
  • physical channel type a physical downlink channel processing mode
  • the RNTI type may include: C-RNTI (Cell Radio Network Temporary Identity), SI-RNTI (Radio Network Temporary Identity for System Message), P-RNTI (Radio Network Temporary Identity for Paging Channel), and RA - RNTI (Radio Network Temporary Identity for Random Access Procedure) and other types.
  • the DCI type may be a DCI type carrying scheduling information and a DCI type carrying control information.
  • the search space types include a common search space type and a dedicated search space type.
  • the physical channel type includes a control channel and a data channel. For example, the EPDCCH belongs to the control channel, and the PDSCH (Physical Downlink Shared Channel) belongs to the data channel.
  • the corresponding physical downlink channel processing mode may be predefined for different RNTI types. For example, if the physical downlink channel is scrambled by using the SI-RNTI, the physical downlink channel processing procedure described in the foregoing manner 3 is used; If the physical downlink channel is sent in the common search space, the physical downlink channel processing procedure described in the foregoing mode 1 or mode 3 is adopted. If the physical downlink channel is sent in the dedicated search space, the physical downlink channel processing described in the foregoing manner 2 is adopted. Process. Similarly, the correspondence between the DCI type and the foregoing three physical downlink channel processing modes may be predefined, and the correspondence between the channel type and the foregoing three physical downlink channel processing modes may be defined in advance.
  • the physical downlink channel in the flow shown in Figure 2 may include a control channel transmitted in the data region and/or Data channels, such as EPDCCH and PDSCH, or channels for other purposes.
  • Data channels such as EPDCCH and PDSCH, or channels for other purposes.
  • the physical downlink control channel in the embodiment of the present disclosure is not limited to the PDCCH, but refers to a physical downlink channel for carrying DCI, including an EPDCCH and other physical channels for the purpose.
  • the low-cost MTC (Machine Type Communication) UE supports only 1.4MHz RF bandwidth in both uplink and downlink
  • the original PDCCH continues to be in the LTE system.
  • the control area is sent, and the physical downlink control channel is also sent in the data area.
  • the physical downlink control channel may be referred to as an M-PDCCH, and the M-PDCCH and the EPDCCH (Enhanced Physical Downlink Control Channel) and the PDSCH frequency are used.
  • the data area is multiplexed in a split manner, as shown in FIG.
  • the M-PDCCH is used to carry scheduling information such as an MCS (Modulation and Coding Scheme) used, and may also carry other scheduling or control information.
  • the M-PDCCH may be processed by one of the processing manners of the foregoing three physical downlink channels.
  • the foregoing embodiment shows that the physics can be solved by determining the RE occupied by the CSI-RS and performing the rate matching and the physical resource mapping on the physical downlink channel according to the determined RE occupied by the CSI-RS.
  • the problem that the RE used by the downlink channel conflicts with the occupied RE of the CSI-RS.
  • FIG. 3 is a flow chart showing a method of processing a physical downlink channel of a terminal side device, which may be performed by a processing device of a physical downlink channel, which may be a terminal or may be located in the terminal.
  • the process specifically includes:
  • Step S301 determining an RE occupied by the CSI-RS.
  • all REs in the subframes of the CSI-RS that may be occupied by the CSI-RS may be determined, or the REs actually occupied by the CSI-RS may be determined according to the resource configuration information of the CSI-RS for rate matching. .
  • Step S302 Perform physical resource mapping and de-rate matching on the physical downlink channel according to the determined RE occupied by the CSI-RS.
  • the RE that may be occupied by the CSI-RS or the RE actually occupied may be removed; or the CSI-RS may not be removed when the physical downlink channel is de-rate matched.
  • the actual occupied RE is punctured by the actual occupied RE of the CSI-RS when the physical downlink channel is decomposed.
  • step S301 and step S302 There are three implementation manners of the processing flow of the physical downlink channel as described in the above steps S301 and S302. The three implementations of step S301 and step S302 are described in detail below.
  • the mode 1 of the terminal-side processing flow corresponds to the mode 1 in the network-side processing flow, and in the first mode of the terminal-side processing flow, all the REs in the subframes that may be configured with the CSI-RS may be determined to be occupied by the CSI-RS.
  • all REs in the subframes that may be configured with CSI-RS may be removed by the zero-power ZP CSI-RS and the non-zero-power NZP CSI-RS.
  • the mode 2 of the terminal-side processing flow corresponds to the second mode in the network-side processing flow, and in the second mode of the terminal-side processing flow, the CSI-RS is used according to the resource configuration information of the CSI-RS for rate matching.
  • the RE when performing physical resource mapping and de-rate matching on the physical downlink channel, removes the determined RE occupied by the CSI-RS.
  • the mode 3 of the terminal side processing flow corresponds to the mode three-phase in the network side processing flow, and in the third mode of the terminal side processing flow, all the REs in the subframes that may be configured with the CSI-RS may be occupied by the CSI-RS.
  • no RE that may be occupied by the CSI-RS is removed.
  • the resource configuration information of the CSI-RS for rate matching is notified to the terminal by using a system message or terminal-specific signaling.
  • the resource configuration information of the CSI-RS for rate matching is used only for rate matching and resource mapping of the physical downlink channel, and the resource configuration information of the measured CSI-RS is notified to the terminal by using dedicated signaling.
  • the resource configuration information of the CSI-RS for measurement includes only the NZP CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is CSI-RS resource configuration information that is separately configured for the transmit diversity, and the CSI-RS resource configuration information satisfies the resource configuration requirement of the transmit diversity; or, only one is configured.
  • CSI-RS resource configuration information for rate matching, and the CSI-RS resource configuration information satisfies resource configuration requirements of transmit diversity; or, only one set of CSI-RS resource configuration information for rate matching is configured, and the CSI is
  • the RS resource configuration information does not consider the resource configuration requirement of the transmit diversity; wherein the resource configuration requirement that satisfies the transmit diversity refers to the port 2 Under transmit diversity, on the available symbols, the frequencies between the REs other than the CRS are consecutive and the number of available REs in one OFDM symbol is even; or, under 4-port transmit diversity, on the available symbols, the RE other than the CRS
  • the number of available REs in each of the four frequency domains is continuous and one OFDM symbol is an integer multiple of four.
  • the system message, the terminal-specific signaling, and one or a combination of other messages sent before the system message or the terminal-specific signaling are sent through a physical downlink channel, and the system message is sent, the terminal
  • the method 1 or the method 3 may be used to determine the RE occupied by the CSI-RS and the RE occupied by the CSI-RS according to the determined
  • the physical downlink channel of the system message or the terminal-specific signaling or the other message is sent to perform physical resource mapping and de-rate matching.
  • one of the three physical downlink channel processing modes may be selected according to one or more of the RNTI type, the DCI type, the search space type, and the physical channel type.
  • the specific selection method is the same as the corresponding process in the foregoing network side processing flow, and will not be described in detail herein.
  • the physical downlink channel in the flow shown in FIG. 3 may include control channels and/or data channels transmitted in the data region, such as EPDCCH and PDSCH, or channels for other purposes.
  • the foregoing embodiment shows that the resource resource RE occupied by the channel state information pilot signal CSI-RS is determined, and the physical downlink channel is configured for decommissioning resources and de-rate matching according to the determined RE occupied by the CSI-RS.
  • One of the three implementation manners can solve the problem that the RE used by the physical downlink channel conflicts with the occupied RE of the CSI-RS.
  • embodiments of the present disclosure provide implementation procedures in specific application scenarios.
  • Scenario 1 The network side sends a broadcast message in mode 3 to notify the terminal to use CSI-RS resource configuration information for rate matching, and then the network side uses mode 2 to process the physical downlink channel.
  • the broadcast message is sent in a manner of no control channel scheduling, that is, the PDSCH carrying the broadcast message is sent on a predefined PRB by a predefined MCS (Modulation and Coding Scheme).
  • the CRC (Cyclic Redundancy Check) of the PDSCH is scrambled with a specific RNTI, such as SI-RNTI.
  • a specific RNTI such as SI-RNTI.
  • the PDSCH carrying the broadcast message when the rate is matched, no RE that may be occupied by any CSI-RS is removed.
  • the PDSCH adopts a 4-port CRS-based transmit diversity method, and is in a physical resource block PRB. The location of the available resources of the PDSCH is shown in Figure 5.
  • the PDSCH is transmitted in a subframe without a CSI-RS. If there is a CSI-RS signal in the subframe where the PDSCH is located, the RE that is actually occupied by the CSI-RS is punctured when the physical resource mapping is performed, that is, only the CSI-RS signal is transmitted in the RE where the CSI-RS is located, as shown in FIG. 6.
  • the resource requirements for transmit diversity need to be considered when configuring CSI-RS resources.
  • the SFBC Space-Frequency Block Code
  • FSTD Frequency Switched Transmit Diversity
  • Diversity corresponding to the 2-port, requires two consecutive frequencies between the REs and the number of available REs in one OFDM symbol is even, corresponding to the 4-port requiring REs to be continuous every 4 frequency domains and the number of available REs in one OFDM symbol is 4. Integer multiple.
  • the physical control channel/data channel adopting mode 2 adopts a CRS-based transmit diversity mode, and the CSI-RS configuration for rate matching notified by the network side in the SIB needs to meet the above requirements.
  • the physical control channel/data channel adopting mode 2 adopts CRS-based 4-port transmit diversity, and it is necessary to ensure that REs other than CRS and CSI-RS are satisfied: every four frequency domains between REs are continuous and one The number of available REs in the OFDM symbol is an integer multiple of four.
  • the resource configuration information of the CSI-RS for rate matching in the broadcast message includes a CSI-RS antenna port number, a CSI-RS subframe configuration, and a CSI-RS resource configuration number.
  • SIB System Information Blocks
  • the number of antenna ports is 8, the CSI-RS resource configuration number (resourceConfig) is 0, and the CSI-RS subframe configuration (subframeConfig) is 1.
  • the antenna port count is 8
  • the CSI-RS resource configuration number (resourceConfig) is 4
  • the CSI-RS subframe configuration (subframeConfig) is 1.
  • the subframe configuration 0 corresponds to a CSI-RS period of 5 ms, and the CSI-RS subframe offset is 1. See Table 1 for specific configuration information.
  • the subframe in which the CSI-RS is located is as shown in FIG. 7.
  • the terminal assumes that there is no CSI-RS in the special subframe of the frame structure 2, the subframe in which the SIB1 is located (subframe 5 of the even radio frame), and the subframe in which the paging message is transmitted. Further, the CSI-RS that collides with the PBCH (Physical Broadcast Channel) is not transmitted.
  • PBCH Physical Broadcast Channel
  • the RE locations corresponding to the CSI-RS resource configuration numbers 0 and 4 are determined according to the resource configuration mechanism of the existing NZP CSI-RS, and the specific location is as shown in FIG. 8.
  • the CSI-RS resource configuration information for rate matching is removed according to the network configuration.
  • the network side still uses the 4-port CRS-based transmit diversity mode as an example.
  • the REs occupied by the CSI-RS configured on the network side are removed, and the CSI-RS occupied needs to be removed.
  • the location of the RE is shown in Figure 9.
  • the terminal side receives the PDSCH carrying the broadcast message with a specific RNTI on the predefined PRB.
  • the terminal determines the usage mode 3 according to the specific RNTI, and specifically, when the physical resource mapping and the de-rate matching are performed on the PDSCH, the RE that may be occupied by any CSI-RS is not removed, that is, the PDSCH is available in a PRB. As shown in Figure 5.
  • the terminal side After correctly receiving the resource configuration information of the CSI-RS for the rate matching in the broadcast message, the terminal side performs the physical resource mapping and the de-rate matching on the physical downlink channel, according to the configured CSI-RS resource used for rate matching.
  • the configuration information is used to remove the RE occupied by the CSI-RS, that is, the RE occupied by the CSI-RS in one PRB is as shown in FIG. 9.
  • the physical downlink channel sent by the network side in the second mode is sent in the dedicated search space, and the second method in the network side process and the second method in the terminal side process are pre-defined for the dedicated search space, so the terminal is processed.
  • the physical downlink channel is processed using mode 2 in the corresponding terminal side flow.
  • Scenario 2 The network side sends a broadcast message to notify the rate matching CSI-RS resource configuration information, and then the network side uses mode 2 to process the physical downlink channel.
  • the broadcast message is sent by a control channel scheduling, and the control channel is an M-PDCCH.
  • the M-PDCCH is multiplexed with the EPDCCH and the PDSCH in a frequency division manner.
  • the transmission mode of the M-PDCCH is CRS-based transmission diversity.
  • the resource location of the M-PDCCH is as shown in FIG.
  • the network side removes all REs that may be occupied by the ZP/NZP CSI-RS in all subframes in which the CSI-RS may be configured during rate matching and physical resource mapping.
  • both the M-PDCCH and the PDSCH adopt a 2-port CRS-based transmit diversity mode, and the available resources in one PRB in the subframe in which the CSI-RS exists are as shown in FIG.
  • the resource configuration information of the CSI-RS for rate matching in the broadcast message is indicated as follows, including a CSI-RS subframe configuration and a CSI-RS resource configuration bit bitmap.
  • the network side notifies the following CSI-RS configuration in the SIB:
  • the resource configuration list (ResourceConfigList) is 10001000000000000, and the CSI-RS subframe configuration (subframeConfig) is 1.
  • the CSI-RS subframe is determined to be the same as the configuration in the first specific scenario described above.
  • the RE location corresponding to the CSI-RS resource configuration 10001000000000000 is determined according to the resource configuration mechanism of the existing ZP CSI-RS, and the REs corresponding to the NZP CSI-RS 4 port configuration 0 and 4 are as shown in FIG.
  • the CSI-RS resource configuration for the rate matching is notified, when the physical downlink channel is subjected to rate matching and physical resource mapping, the CSI-RS resource configuration information for rate matching is removed, and the CSI-RS occupation is removed. RE.
  • the physical downlink control channel and/or the data channel adopts a transmission mode based on DMRS (Demodulation Reference Signal), the DMRS port is 7, and the number of CRS ports is 2, which is removed when performing rate matching and physical resource mapping.
  • DMRS Demodulation Reference Signal
  • the REs occupied by the CSI-RS configured on the network side, and the available resources are as shown in Figure 12.
  • the terminal side when the terminal side performs the physical resource mapping and the de-rate matching on the M-PDCCH and the scheduled PDSCH, all the REs in the subframes that may be configured with the CSI-RS may be removed by the ZP/NZP CSI-RS. That is, the resource location available for a PDSCH in one PRB is as shown in FIG.
  • the manner of using the network side process is predefined for the common search space. The processing is performed using the first method in the terminal side flow, so the terminal processes the pair of physical downlink channels in a manner corresponding to the terminal side flow.
  • the terminal side After correctly receiving the resource configuration information of the CSI-RS for the rate matching in the broadcast message, the terminal side performs the physical resource mapping and the de-rate matching on the physical downlink channel, according to the configured CSI-RS resource used for rate matching.
  • the configuration information is used to remove the RE occupied by the CSI-RS, that is, the location of resources available in a PRB is as shown in FIG. 12 .
  • the physical downlink channel sent by the network side in the second mode is sent in the dedicated search space, and the second method in the network side process and the second method in the terminal side process are pre-defined for the dedicated search space, so the terminal is processed.
  • the physical downlink channel is processed using mode 2 in the corresponding terminal side flow.
  • the M-PDCCH can be processed only by using the mode one, but The PDSCH scheduled by the M-PDCCH adopts mode three processing.
  • HARQ Hybrid Automatic Repeat Request
  • two sets of resource configurations may be configured, one of which is a resource configuration requirement that satisfies the transmit diversity; There is no need to consider the resource allocation requirements for transmit diversity.
  • FIG. 13 shows a processing device of a physical downlink channel, which can be applied to the flow shown in FIG. 2.
  • the device may be a base station or may be located inside the base station.
  • the device includes:
  • a determining unit 1301, configured to determine an RE occupied by the CSI-RS
  • the processing unit 1302 is configured to perform rate matching and physical resource mapping on the physical downlink channel according to the determined RE occupied by the CSI-RS.
  • the processing device further includes: a selecting unit 1303;
  • the selecting unit 1303 is configured to select the RE that is determined to be occupied by the CSI-RS, and perform rate matching and physical resource mapping on the physical downlink channel according to the determined RE occupied by the CSI-RS, including a manner First, mode two or mode three;
  • the determining unit 1301 is specifically configured to: determine all the REs in the subframes of the CSI-RS that may be occupied by the CSI-RS; the processing unit 1302 is specifically configured to: perform the physical downlink channel. Remove all possible CSI-RS sub-configurations when rate matching and physical resource mapping All REs in the frame that may be occupied by ZP CSI-RS and NZP CSI-RS;
  • the determining unit 1301 is specifically configured to: determine, according to the resource configuration information of the rate-matched CSI-RS, the RE that is occupied by the CSI-RS; the processing unit 1302 is specifically configured to: When the channel performs rate matching and physical resource mapping, removing the determined RE occupied by the CSI-RS;
  • the determining unit 1301 is specifically configured to: determine an RE that is actually occupied by the NZP CSI-RS, or an RE that is actually occupied by the NZP CSI-RS and the ZP CSI-RS; and the processing unit 1302 is specifically configured to: When the downlink channel performs rate matching, all the REs actually occupied by the CSI-RS are not removed, and when the physical resource mapping is performed on the physical downlink channel, the RE actually occupied by the CSI-RS is punctured.
  • the resource configuration information of the CSI-RS for rate matching is notified to the terminal by using a system message or terminal specific signaling.
  • system message, the terminal-specific signaling, and one or a combination of other messages sent before the system message or the terminal-specific signaling are sent through a physical downlink channel;
  • the selecting unit 1303 is specifically configured to: determine the RE occupied by the CSI-RS by using the mode 1 or the mode 3, and Performing rate matching and physical resource mapping on the physical downlink channel used for transmitting system messages or terminal-specific signaling or the other messages according to the determined REs occupied by the CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is used only for rate matching and resource mapping of the physical downlink channel, and the resource configuration information of the measured CSI-RS is notified to the terminal by using dedicated signaling.
  • the resource configuration information of the CSI-RS for measurement includes only the NZP CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is CSI-RS resource configuration information separately configured for transmit diversity, and the CSI-RS resource configuration information satisfies a resource configuration requirement of transmit diversity; or ,
  • the resource configuration requirement that satisfies the transmit diversity refers to the 2-port transmit diversity.
  • the two frequencies are consecutive between the REs other than the CRS, and the available RE number in one OFDM symbol is an even number; or, 4 ports
  • every 4 frequency domains between REs except CRS are consecutive and the number of available REs in one OFDM symbol is an integer multiple of 4.
  • the selecting unit 1303 is further configured to:
  • the method is selected in the first mode, the second mode, and the third mode.
  • FIG. 14 shows a processing device of a physical downlink channel, which can be applied to the flow shown in FIG.
  • the device may be a terminal or may be located inside the terminal.
  • the device includes:
  • a determining unit 1401, configured to determine an RE occupied by the CSI-RS
  • the processing unit 1402 is configured to perform physical resource mapping and de-rate matching on the physical downlink channel according to the determined RE occupied by the CSI-RS.
  • the processing device further includes: a selecting unit 1403;
  • the selecting unit 1403 is configured to select the RE that is determined to be occupied by the CSI-RS, and perform physical resource mapping and de-rate matching on the physical downlink channel according to the determined RE occupied by the CSI-RS, including Method 1, mode 2 or mode 3;
  • the determining unit 1401 is specifically configured to: determine all REs in the subframes of the CSI-RS that may be occupied by the CSI-RS; the processing unit 1402 is specifically configured to: perform physical downlink channels. When performing physical resource mapping and de-rate matching, remove all REs in the subframes that may be configured with CSI-RS that may be occupied by ZP CSI-RS and NZP CSI-RS;
  • the determining unit 1401 is specifically configured to: determine, according to the resource configuration information of the rate-matched CSI-RS, the RE that is occupied by the CSI-RS; the processing unit 1402 is specifically configured to: When the channel performs physical resource mapping and de-rate matching, the determined RE occupied by the CSI-RS is removed;
  • the determining unit 1401 is specifically configured to: determine all the REs that may be occupied by the CSI-RS in all the subframes that may be configured with the CSI-RS; and the processing unit 1402 is specifically configured to: perform the physical downlink channel When the physical resource mapping and the de-rate matching are solved, any RE that may be occupied by the CSI-RS is not removed.
  • the resource configuration information of the CSI-RS for rate matching is notified to the terminal by using a system message or terminal specific signaling.
  • system message, the terminal-specific signaling, and one or a combination of other messages sent before the system message or the terminal-specific signaling are sent through a physical downlink channel;
  • the selecting unit 1403 is specifically configured to: determine the RE occupied by the CSI-RS by using the mode 1 or the mode 3, and Performing physical resource mapping and de-rate matching on the physical downlink channel used for transmitting system messages or terminal-specific signaling or the other messages according to the determined REs occupied by the CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is only used to perform physical resource mapping and de-rate matching on the physical downlink channel, and the resource configuration information used for the measured CSI-RS is received by using dedicated signaling. .
  • the resource configuration information of the CSI-RS for measurement includes only the NZP CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is CSI-RS resource configuration information separately configured for transmit diversity, and the CSI-RS resource configuration information satisfies a resource configuration requirement of transmit diversity; or ,
  • the resource configuration requirement that satisfies the transmit diversity refers to the 2-port transmit diversity.
  • the two frequencies are consecutive between the REs other than the CRS, and the available RE number in one OFDM symbol is an even number; or, 4 ports
  • every 4 frequency domains between REs except CRS are consecutive and the number of available REs in one OFDM symbol is an integer multiple of 4.
  • the selecting unit 1403 is further configured to:
  • the method is selected in the first mode, the second mode, and the third mode.
  • FIG. 15 is a schematic diagram of another apparatus for processing a physical downlink channel according to an embodiment of the present disclosure, which may implement the method provided by the foregoing embodiment of the present disclosure.
  • the device can include: any number of interconnects
  • the buses and bridges are specifically linked by one or more processors represented by processor 1501 and various circuits of memory represented by memory 1503.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface, and the transceiver 1504 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 1501 is responsible for managing the bus architecture and general processing, and the memory 1503 can store data used by the processor 1501 when performing operations.
  • the display 1502 may be a display device such as a CRT (Cathode Ray Tube), a PDP (Plasma Display Panel), a DLP (Digital Light Procession), or an LCD (Liquid Crystal Display).
  • the processor 1501 is configured to read a program in the memory 1503, and perform the following process: determining an RE occupied by the CSI-RS, and performing, by using the transceiver 1504, the physical downlink channel according to the determined RE occupied by the CSI-RS. Rate matching and physical resource mapping.
  • the processor 1501 may select the method for determining the RE that is occupied by the CSI-RS, and performing rate matching and physical resource mapping on the physical downlink channel according to the determined RE that is occupied by the CSI-RS, including the manner 1 and manner. Second or third
  • the processor 1501 determines all REs in the subframes of the CSI-RS that may be occupied by the CSI-RS, performs rate matching and physical resource mapping on the physical downlink channel through the transceiver 1504, and then the processor 1501. Removing all REs in the subframes that may be configured with CSI-RS that may be occupied by zero-power ZP CSI-RS and non-zero-power NZP CSI-RS;
  • the processor 1501 determines the RE occupied by the CSI-RS according to the resource configuration information of the CSI-RS for rate matching, performs rate matching and physical resource mapping on the physical downlink channel through the transceiver 1504, and then processes The device 1501 removes the determined RE occupied by the CSI-RS;
  • the processor 1501 determines the RE or the NZP CSI-RS actually occupied by the NZP CSI-RS and the RE actually occupied by the ZP CSI-RS, and performs rate matching on the physical downlink channel by the transceiver 1504, and the processor 1501 does not remove. All the REs actually occupied by the CSI-RS perform physical resource mapping on the physical downlink channel through the transceiver 1504, and the processor 1501 punctates the REs actually occupied by the CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is adopted by the system.
  • the terminal or terminal-specific signaling is notified to the terminal.
  • the processor 1501 determines the RE occupied by the CSI-RS according to the mode 1 or the mode 3, and passes the transceiver according to the determined RE occupied by the CSI-RS.
  • 1504 performs rate matching and physical resource mapping on the physical downlink channel used for transmitting system messages or terminal-specific signaling or the other messages.
  • the resource configuration information of the CSI-RS for rate matching is used only for rate matching and resource mapping of the physical downlink channel, and the resource configuration information of the measured CSI-RS is notified to the terminal by using dedicated signaling.
  • the resource configuration information of the CSI-RS for measurement includes only the NZP CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is CSI-RS resource configuration information that is separately configured for the transmit diversity, and the CSI-RS resource configuration information satisfies the resource configuration requirement of the transmit diversity; or, only one is configured.
  • CSI-RS resource configuration information for rate matching, and the CSI-RS resource configuration information satisfies resource configuration requirements of transmit diversity; or, only one set of CSI-RS resource configuration information for rate matching is configured, and the CSI is
  • the RS resource configuration information does not consider the resource allocation requirement of the transmit diversity; wherein the resource configuration requirement that satisfies the transmit diversity refers to the 2-port transmit diversity, and the available symbols are consecutively connected between the REs other than the CRS and The number of available REs in one OFDM symbol is even; or, in 4-port transmit diversity, on the available symbols, every 4 frequency domains between REs except CRS are consecutive and the number of available REs in one OFDM symbol is an integer multiple of 4.
  • the processor 1501 selects in the first mode, the second mode, and the third mode according to the RNTI type, the DCI type, the search space type, and/or the physical channel type.
  • the memory 1503 is configured to store one or more executable programs, and is used to configure the processor 1501.
  • FIG. 16 is a schematic diagram of another apparatus for processing a physical downlink channel according to an embodiment of the present disclosure, which may implement the method provided by the foregoing embodiment of the present disclosure.
  • the apparatus can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1601 and various circuits of memory represented by memory 1603.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface, and the transceiver 1605 can be a plurality of components, including a transmitter and a transceiver, provided for use on a transmission medium and various He is the unit that communicates with the device.
  • the processor 1601 is responsible for managing the bus architecture and general processing, and the memory 1603 can store data used by the processor 1601 in performing operations.
  • the user interface 1604 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a speaker, a microphone, a joystick, and the like.
  • the display 1602 may be a display device such as a CRT, PDP, DLP, or LCD.
  • the processor 1601 is configured to read a program in the memory 1603, and perform the following process: determining an RE occupied by the CSI-RS, and performing, by using the transceiver 1605, the physical downlink channel according to the determined RE occupied by the CSI-RS. Solve physical resource mapping and de-rate matching.
  • the processor 1601 may choose to select the RE that is determined to be occupied by the CSI-RS, and perform physical resource mapping and de-rate matching on the physical downlink channel according to the determined RE that is occupied by the CSI-RS, including manner 1 Method 2 or mode 3;
  • the processor 1601 determines all REs in the subframes of the CSI-RS that may be occupied by the CSI-RS, and performs physical resource mapping and de-rate matching on the physical downlink channel by the transceiver 1605, and then the processor. 1601 removes all REs in the subframes that may be configured with CSI-RS that may be occupied by zero-power ZP CSI-RS and non-zero-power NZP CSI-RS;
  • the processor 1601 determines the RE occupied by the CSI-RS according to the resource configuration information of the rate-matched CSI-RS, and performs physical resource mapping and de-rate matching on the physical downlink channel by the transceiver 1605, and then The processor 1601 removes the determined RE occupied by the CSI-RS;
  • the processor 1601 determines the RE or the NZP CSI-RS actually occupied by the NZP CSI-RS and the RE actually occupied by the ZP CSI-RS, and performs physical resource mapping and de-rate matching on the physical downlink channel by the transceiver 1605. The processor 1601 then does not remove any REs that may be occupied by the CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is notified to the terminal by using a system message or terminal-specific signaling.
  • the processor 6501 determines the RE occupied by the CSI-RS according to the mode 1 or the mode 3, and passes the transceiver according to the determined RE occupied by the CSI-RS. 1605 for the said to be sent
  • the system message or terminal-specific signaling or the physical downlink channel of the other message performs physical resource mapping and de-rate matching.
  • the resource configuration information of the CSI-RS for rate matching is used only for rate matching and resource mapping of the physical downlink channel, and the resource configuration information of the measured CSI-RS is notified to the terminal by using dedicated signaling.
  • the resource configuration information of the CSI-RS for measurement includes only the NZP CSI-RS.
  • the resource configuration information of the CSI-RS for rate matching is CSI-RS resource configuration information that is separately configured for the transmit diversity, and the CSI-RS resource configuration information satisfies the resource configuration requirement of the transmit diversity; or, only one is configured.
  • CSI-RS resource configuration information for rate matching, and the CSI-RS resource configuration information satisfies resource configuration requirements of transmit diversity; or, only one set of CSI-RS resource configuration information for rate matching is configured, and the CSI is
  • the RS resource configuration information does not consider the resource allocation requirement of the transmit diversity; wherein the resource configuration requirement that satisfies the transmit diversity refers to the 2-port transmit diversity, and the available symbols are consecutively connected between the REs other than the CRS and The number of available REs in one OFDM symbol is even; or, in 4-port transmit diversity, on the available symbols, every 4 frequency domains between REs except CRS are consecutive and the number of available REs in one OFDM symbol is an integer multiple of 4.
  • the processor 1601 selects in the first mode, the second mode, and the third mode according to the RNTI type, the DCI type, the search space type, and/or the physical channel type.
  • the memory 1603 is configured to store one or more executable programs, and is used to configure the processor 1601.
  • 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 device is implemented in a flow chart or Multiple processes and/or block diagrams The functions specified in one or more boxes.
  • 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

L'invention concerne un procédé et un dispositif de traitement d'un canal physique de liaison descendante. Le procédé consiste à : déterminer un élément de ressource occupé par un signal de référence d'informations d'état de canal ; et exécuter une adaptation de débit et un mappage de ressources physiques sur un canal physique de liaison descendante d'après l'élément de ressource déterminé occupé par le signal de référence d'informations d'état de canal. La présente invention peut résoudre le problème lié au fait qu'un élément de ressource utilisé par un canal physique de liaison descendante est en conflit avec un élément de ressource occupé par un signal de référence d'informations d'état de canal.
PCT/CN2015/092429 2014-11-06 2015-10-21 Procédé et dispositif de traitement de canal physique de liaison descendante WO2016070711A1 (fr)

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