CN102685038B - A kind of method and system for demodulating the binding demodulation of pilot physical resource block - Google Patents
A kind of method and system for demodulating the binding demodulation of pilot physical resource block Download PDFInfo
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Abstract
The invention discloses a kind of method and system for demodulating the binding demodulation of pilot physical resource block, for solving the great limit frequency diversity gain of PRB binding meetings, and under Fallback patterns, the gain that PRB is bundled in high order transmission does not substantially embody, frequency diversity gain can be also influenceed, so that the problem of the reliability decrease of Fallback patterns.Inventive network side indicates whether receiving side carries out joint channel estimation and demodulation according to PRG by configuring transmission mode, descending control information format and feedback model.The present invention is under Normal and Fallback patterns, according to different descending control information formats, the adjustment channel estimation mode of dynamic flexible, so as to make full use of the frequency diversity gain of the channel estimation gains of PRB bindings and No PRB bindings, improve the reliability and average throughput of system.
Description
Technical Field
The present invention relates to a Long term evolution Advanced system (LTE-Advanced), and more particularly, to a method and a system for physical resource block binding demodulation based on demodulation pilot in LTE-Advanced.
Background
In LTE Release8/9, CRS (Common Reference Signal) is designed for measuring channel quality and demodulating received data symbols, and UE (user equipment) can measure channels through CRS to decide that UE performs cell reselection and handover to a target cell, and measure channel quality in a UE connection state, and when an interference level is high, a physical layer can disconnect through a radio link connection failure signaling related to a higher layer. In order to further improve the spectrum utilization of the cell average and the cell edge spectrum utilization as well as the throughput of each UE in lte 10, two kinds of reference signals are defined respectively: a CSI-RS (channel state information reference signal) and a DMRS (demodulation reference signal), wherein the CSI-RS is used for measuring a channel, and a PMI (Precoding Matrix index), a CQI (channel quality information Indicator), and an RI (rank Indicator) that the UE needs to feed back to the eNB may be calculated through the measurement of the CSI-RS. The distribution of the CSI-RS in both time domain and frequency domain is sparse, and it is ensured that only one pilot density of the CSI-RS per antenna port of the serving cell is contained in one RB (Resource Block, subframe), and the period of the CSI-RS is taken as a multiple of 5ms in the time domain. The sparse CSI-RS may support eNodeB 8 antenna configuration and advantageously supports neighbor cell measurement configuration. The 3GPP61bis standard conference specifies pilot mapping patterns among different cells and different antennas of the same cell through the pilot mapping patterns of CSI-RS.
In the previous discussion, considering the accuracy of DMRS channel estimation, it is required to consider Bundling multiple PRBs (Precoding Resource Block) during demodulation using DMRS, so that channel estimation can be performed jointly by multiple PRBs, thereby improving the accuracy of channel estimation, and long-term discussion adopts Bundling PRBs in units of PRG (Precoding Resource Group), where the size of PRG is shown in table 1.
TABLE 1
Through simulation of various companies in a conference, PRB can be used to bring a larger channel estimation accuracy gain, so that the average throughput of the system is improved, and the throughput gain is more obvious when the eNodeB adopts SU-MIMO mode high-rank transmission for UE. Precoding is performed on a subcarrier basis or on an independent PRB in consideration of frequency diversity gain to be utilized in TDD and open loop MIMO (Multiple-Input Multiple-output) modes. When the transmission mode 9(TM9) is adopted based on the overhead and performance gain of the signaling finally considered, if the UE configures PMI/RI feedback, the UE needs PRB Bundling to perform joint channel estimation and demodulation on DMRSs on multiple PRBs.
Two downlink control information formats (DCIFormat 1A are configured in a TM9 mode through the discussion of the latest conference, wherein DCIFormat 1A is a TM9 Fallback mode, a transmit diversity (TxD) mode of CRS-based demodulation is supported under the DCI Format 1A, and data can be transmitted by using a port 7 when the system operates in a Multicast Broadcast Single Frequency Network (MBSFN) subframe.
The two are combined together, and the problem that the Fallback mode is dynamically configured is to say, when a base station (eNodeB) finds that a channel at a certain time point is suddenly deteriorated or CQI and PMI feedback are inaccurate, the number is transmitted by using the Fallback mode, the Fallback mode can be used for transmitting some data information on one hand, and can transmit Radio Resource Control (RRC) signaling on the other hand, so as to notify that a UE needs to reconfigure a transmission mode, and at this time, the accuracy of the RRC signaling needs to be ensured. If the UE is operated under TM9 and the UE needs to feedback PMI/CQI in a semi-static configuration before, the UE needs to perform joint channel estimation, and if the UE is operated under DCI Format 1A, the UE uses CRS for demodulation, which is not necessarily limited by the above PRB Bundling, which reduces the implementation flexibility of the UE and increases the implementation complexity of the UE because the UE needs to determine whether Bundling is needed. If the UE is in the MBSFN subframe, only port 7 can be used to transmit data or signaling, so that in this case, mapping from distributed physical resource blocks (distributed) to Virtual Resource Blocks (VRBs) is not allowed, and therefore mapping between physical resource blocks and virtual resource blocks can only be performed in a centralized (Localized) manner, and in this manner, 1A allocates resources by using resource allocation type 2, which inevitably makes a plurality of resources allocated to one UE continuous. Therefore, the UE operating under 1A tends to perform multiple PRB joint channel estimation according to the size of PRB Bundling. This approach will inevitably affect the demodulation performance of the UE, because the frequency diversity gain is fully utilized in the Fallback mode, and due to the inaccuracy of PMI/CQI, the possible PMI is traversed as much as possible to obtain the diversity gain of the codebook stage. Because the PRB Bundling can greatly limit the frequency diversity gain, and the number of the transmission is only transmitted by using the port 7 in the Fallback mode, the gain of the PRB Bundling in high-rank transmission is not obviously reflected, the frequency diversity gain can be influenced, and the reliability of the Fallback mode is reduced.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a method and a system for bundling and demodulating a demodulation pilot physical resource block, which are used to solve the problem that PRB bundling can greatly limit frequency diversity gain, and in a Fallback mode, the gain of PRB bundling in high rank transmission is not obviously reflected, and the frequency diversity gain is also affected, so that the reliability of the Fallback mode is reduced.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for bundled demodulation of demodulation pilot physical resource blocks (PHRBs), the method comprising:
the network side indicates whether the receiving side carries out joint channel estimation and demodulation according to the PRG through configuring a transmission mode, a downlink control information format and a feedback mode.
Further, the network side configures the transmission mode adopted by the receiving side to be the transmission mode 9; the network side configures that a receiving side needs to feed back a precoding matrix index PMI/channel quality information indication CQI when feeding back; the network side implicitly indicates whether the receiving side performs joint channel estimation and demodulation according to the PRG by using the configured downlink control information format.
Further, the indicating whether the receiving side performs joint channel estimation and demodulation according to the precoding resource group PRG specifically includes:
and indicating the receiving side to adopt the demodulation pilot frequency or adopt the common pilot frequency to carry out channel estimation and demodulation, and indicating the receiving side to carry out joint channel estimation and demodulation of a plurality of physical resource blocks according to or not according to the unit of the precoding resource group PRG.
Further, the method for implicitly indicating whether the receiving side performs joint channel estimation and demodulation according to the PRG by the network side using the configured downlink control information format includes:
the network side implicitly instructs the receiving side to perform channel estimation and demodulation by using a demodulation pilot frequency during demodulation by using a downlink control information format 2C, and instructs the receiving side to perform joint channel estimation and demodulation of a plurality of physical resource blocks according to a precoding resource group PRG as a unit.
Further, the method for implicitly indicating whether the receiving side performs joint channel estimation and demodulation according to the PRG by the network side using the configured downlink control information format includes:
when the network side is configured in a conventional Normal subframe, the network side implicitly indicates the receiving side to adopt the common pilot frequency to carry out channel estimation and demodulation when carrying out demodulation by using a downlink control information format 1A, and indicates that the receiving side does not need to carry out joint channel estimation and demodulation of a plurality of physical resource blocks by taking a Precoding Resource Group (PRG) as a unit.
Further, the method for implicitly indicating whether the receiving side performs joint channel estimation and demodulation according to the PRG by the network side using the configured downlink control information format includes:
when the network side is configured in a Multicast Broadcast Single Frequency Network (MBSFN) subframe, the downlink control information format 1A is used for implicitly indicating the receiving side to adopt the demodulation pilot frequency to carry out channel estimation and demodulation when carrying out demodulation, and the indicating receiving side does not need to carry out joint channel estimation and demodulation of a plurality of physical resource blocks by taking the Precoding Resource Group (PRG) as a unit.
Based on the embodiment of the invention, the invention also provides a system for binding and demodulating the demodulation pilot frequency physical resource block, which comprises a network side and a receiving side,
the network side is used for indicating whether the receiving side carries out joint channel estimation and demodulation according to the PRG by configuring a transmission mode, a downlink control information format and a feedback mode;
and the receiving side is used for receiving the configuration of the network side and determining whether to carry out joint channel estimation and demodulation according to the PRG according to the configuration of the network side.
The invention dynamically and flexibly adjusts the channel estimation mode according to different downlink control information formats under Normal and Fallback modes, thereby fully utilizing the channel estimation gain bound by the PRB and the frequency diversity gain bound by the No-PRB and improving the reliability and the average throughput of the system.
Drawings
Fig. 1 is a flowchart of a demodulation method for binding demodulation pilot frequency physical resource blocks according to the present invention;
fig. 2 is a flowchart of a demodulation method for demodulating pilot physical resource block bundling according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings by way of examples.
Fig. 1 is a flowchart of a demodulation method for binding demodulation pilot physical resource blocks, the method includes:
step 101, a network side configures a transmission mode 9 adopted by a receiving side, configures the receiving side to feed back PMI/CQI during feedback, and implicitly indicates whether the receiving side estimates and demodulates a joint channel according to PRG through a configured downlink control information format;
102, the receiving side receives and applies the configuration of the transmission mode and the feedback mode of the network side, determines whether to adopt the demodulation pilot frequency or adopt the common pilot frequency to carry out channel estimation and demodulation according to the downlink control information format configured by the network side, and determines to carry out the joint channel estimation and demodulation of a plurality of physical resource blocks by taking PRG as a unit or not.
Fig. 2 is a detailed flowchart of a demodulation method for binding demodulation pilot physical resource blocks according to a specific embodiment of the present invention, which includes the following detailed steps:
step 201, a network side configures a transmission mode 9 adopted by a receiving side, the receiving side is configured to feed back PMI/CQI during feedback, a downlink control information format is configured, and then the configuration is sent to the receiving side;
the downlink control information format comprises a downlink control information format 2C or a downlink control information format 1A;
the network side refers to a Macro base station (Macro eNodeB), a micro base station (Pico), a Relay station (Relay), a Home base station (Home eNodeB) and the like, and the receiving side refers to UE, the micro base station (Pico), the Relay station (Relay), the Home base station (HomeeNodeB) and the like;
step 202, receiving and applying the configuration of the network side by a receiving side;
step 203, the receiving side performs a physical downlink control channel blind test on the subframe, executes step 204 when the downlink control information Format obtained by the blind test is downlink control information Format 2C (DCI Format 2C), and executes step 205 when the downlink control information Format obtained by the blind test is downlink control information Format 1A;
and step 204, the receiving side adopts the demodulation pilot DMRS to carry out channel estimation and demodulation during demodulation, and carries out joint channel estimation and demodulation of a plurality of physical resource blocks by taking PRG as a unit.
Step 205, the receiving side determines the subframe type for performing the physical downlink control channel blind detection, and if the subframe type is a Normal subframe, step 206 is executed; if the subframe is a Multicast Broadcast Single Frequency Network (MBSFN) subframe, execute step 207;
step 206, the receiving side adopts a common pilot frequency CRS during demodulation and does not need to carry out channel estimation and demodulation according to a PRG (pseudo random gain) unit;
step 207, the receiving side adopts the demodulation pilot DMRS during demodulation and does not need to perform channel estimation and demodulation in units of PRG.
The first embodiment is as follows:
when the network side schedules the receiving side in a downlink subframe, the network side implicitly instructs the receiving side to use a demodulation pilot frequency for channel estimation and demodulation and instructs the receiving side to perform joint channel estimation and demodulation of a plurality of physical resource blocks according to a PRG unit by using a downlink control information format 2C when the network side configures a transmission mode adopted by the network side to transmit data to the receiving side as a transmission mode 9 through RRC signaling and configures a feedback mode of the receiving side as needing to feed back PMI/CQI.
The receiving side obtains the transmission mode of data sent by the network side as a transmission mode 9 by receiving the RRC signaling sent by the network side, and when the configuration of the network side needing feedback PMI/CQI is obtained by receiving the RRC signaling sent by the network side, when the subframe is subjected to physical downlink control channel blind detection, if DCI Format 2C is adopted for obtaining downlink control information by blind detection, when demodulation is carried out, demodulation pilot frequency is adopted for carrying out channel estimation and demodulation, and joint channel estimation and demodulation of a plurality of physical resource blocks are carried out according to PRG as a unit.
In the embodiment, in the Normal mode, according to different downlink control information formats, a channel estimation mode is dynamically and flexibly adjusted, so that PRB-bound channel estimation gain is fully utilized, and the reliability and the average throughput of a system are improved.
Example two:
the network side configures the network side to send data to the receiving side by adopting a transmission mode 9 through RRC signaling, configures the receiving side by high-level signaling to need to feed back PMI/CQI, and when the network side schedules the receiving side in a Normal downlink subframe, implicitly instructs the receiving side to adopt a common pilot frequency to carry out channel estimation and demodulation by using a downlink control information format 1A when carrying out demodulation, and instructs the receiving side not to carry out joint channel estimation and demodulation of a plurality of physical resource blocks by taking PRG as a unit.
The receiving side obtains the transmission mode of data sent by the network side as a transmission mode 9 by receiving the RRC signaling sent by the network side, and when the configuration of the network side needing feedback PMI/CQI is obtained by receiving the RRC signaling sent by the network side, when blind detection of a physical downlink control channel is performed on a Normal subframe, if DCIFormat 1A is adopted by downlink control information obtained by the blind detection, common pilot frequency is adopted for channel estimation and demodulation during demodulation, and joint channel estimation and demodulation of a plurality of physical resource blocks are not required to be performed according to PRG as a unit.
In the embodiment, in the Fallback mode, the channel estimation mode is dynamically and flexibly adjusted according to different downlink control information formats, so that the frequency diversity gain bound by the No-PRB is fully utilized, and the reliability and the average throughput of the system are improved.
Example three:
the network side configures the network side to transmit data to the receiving side by adopting a transmission mode 9 through RRC signaling, configures the receiving side by high-level signaling to need to feed back PMI/CQI, and when the network side schedules the receiving side in an MBSFN downlink subframe, implicitly indicates the receiving side by using a downlink control information format 1A to perform channel estimation and demodulation by adopting a demodulation pilot frequency during demodulation and indicates that the receiving side does not need to perform joint channel estimation and demodulation of a plurality of physical resource blocks by taking PRG as a unit.
The receiving side obtains the transmission mode of data sent by the network side as a transmission mode 9 by receiving the RRC signaling sent by the network side, and when the configuration of the network side needing to feed back PMI/CQI is obtained by receiving the RRC signaling sent by the network side, when the blind detection of the physical downlink control channel is carried out on the MBSFN subframe, if the DCIFormat 1A is adopted by the downlink control information obtained by the blind detection, the channel estimation and demodulation are carried out by adopting and demodulating the pilot frequency during the demodulation, and the joint channel estimation and demodulation of a plurality of physical resource blocks are not required to be carried out according to the PRG as a unit.
In a Fallback mode, the channel estimation mode is dynamically and flexibly adjusted according to different downlink control information formats, so that the frequency diversity gain bound by the No-PRB is fully utilized, and the reliability and the average throughput of the system are improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention. The configuration information notification scheme employed herein and for each set of pilots is included within the scope of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. A method for binding and demodulating a demodulation pilot frequency physical resource block is characterized by being suitable for a network side;
the network side indicates whether the receiving side carries out joint channel estimation and demodulation according to the PRG through configuring a transmission mode, a downlink control information format and a feedback mode;
the network side indicates whether a receiving side carries out joint channel estimation and demodulation according to a Precoding Resource Group (PRG) by configuring a transmission mode, a downlink control information format and a feedback mode, and the method comprises the following steps:
when a network side configures a transmission mode adopted by the network side to send data to a receiving side as a transmission mode 9 through Radio Resource Control (RRC) signaling, and configures a feedback mode of the receiving side as needing to feed back a Precoding Matrix Index (PMI)/Channel Quality Information (CQI), when the network side schedules the receiving side on a downlink subframe, the network side implicitly instructs the receiving side to adopt a demodulation pilot frequency to carry out channel estimation and demodulation by using a downlink control information format 2C when carrying out demodulation, and instructs the receiving side to carry out joint channel estimation and demodulation of a plurality of physical resource blocks according to a PRG (physical resource block) as a unit; or,
the method comprises the steps that a network side configures the network side through RRC signaling to send data to a receiving side by adopting a transmission mode 9, and when the receiving side is configured through high-level signaling and needs to feed back PMI/CQI, when the network side schedules the receiving side in a Normal downlink subframe, the receiving side is implicitly indicated by using a downlink control information format 1A to carry out channel estimation and demodulation by adopting a common pilot frequency when carrying out demodulation, and the receiving side is indicated not to need to carry out joint channel estimation and demodulation of a plurality of physical resource blocks by taking PRG as a unit; or,
the method comprises the steps that a network side is configured to send data to a receiving side through RRC signaling by adopting a transmission mode 9, the receiving side needs to feed back PMI/CQI through high-level signaling, when the network side schedules the receiving side in a multicast broadcast single frequency network MBSFN downlink subframe, the receiving side is implicitly indicated by using a downlink control information format 1A to carry out channel estimation and demodulation by adopting demodulation pilot frequency during demodulation, and the receiving side is indicated not to need to carry out joint channel estimation and demodulation of a plurality of physical resource blocks according to PRG (physical resource block) as a unit.
2. A method for binding and demodulating a demodulation pilot frequency physical resource block is characterized by being suitable for a receiving side;
a receiving side obtains that a transmission mode of data sent by a network side is a transmission mode 9 by receiving a Radio Resource Control (RRC) signaling sent by the network side, and when the RRC signaling sent by the receiving network side obtains that the configuration of the network side needs to feed back a Precoding Matrix Index (PMI)/Channel Quality Information (CQI) indication, when the subframe is subjected to physical downlink control channel blind test, if downlink control information obtained by the blind test adopts a downlink control information format 2C, a demodulation pilot frequency is adopted for channel estimation and demodulation during demodulation, and joint channel estimation and demodulation of a plurality of physical resource blocks are carried out according to the unit of a Precoding Resource Group (PRG); or,
the receiving side obtains the transmission mode of data sent by the network side as a transmission mode 9 by receiving the RRC signaling sent by the network side, and when the configuration of the network side needing to feed back PMI/CQI is obtained by receiving the RRC signaling sent by the network side, when the blind detection of a physical downlink control channel is carried out on a Normal subframe, if the downlink control information obtained by the blind detection adopts a downlink control information format 1A, a common pilot frequency is adopted for channel estimation and demodulation during demodulation, and the joint channel estimation and demodulation of a plurality of physical resource blocks are not required to be carried out according to the PRG as a unit; or,
the receiving side obtains the transmission mode of data sent by the network side as a transmission mode 9 by receiving RRC signaling sent by the network side, and when the configuration of the network side needing feedback PMI/CQI is obtained by receiving the RRC signaling sent by the network side, when the blind detection of a physical downlink control channel is carried out on a multicast broadcast single frequency network MBSFN subframe, if the downlink control information obtained by the blind detection adopts a downlink control information format 1A, a demodulation pilot frequency is adopted for channel estimation and demodulation during demodulation, and the joint channel estimation and demodulation of a plurality of physical resource blocks are not required to be carried out according to the PRG as a unit.
3. A system for demodulating pilot frequency physical resource block binding demodulation is characterized in that the system comprises a network side;
the network side is used for indicating whether the receiving side carries out joint channel estimation and demodulation according to the PRG by configuring a transmission mode, a downlink control information format and a feedback mode;
the network side is specifically configured to configure, through radio resource control RRC signaling, that a transmission mode adopted by the network side to send data to the receiving side is a transmission mode 9, and configure a feedback mode of the receiving side as requiring feedback of a precoding matrix index PMI/channel quality information indicator CQI, and when the receiving side is scheduled by a downlink subframe, implicitly instruct the receiving side to perform channel estimation and demodulation by using a demodulation pilot frequency when performing demodulation by using a downlink control information format 2C, and instruct the receiving side to perform joint channel estimation and demodulation of a plurality of physical resource blocks according to a PRG unit; or,
the method is specifically used for configuring a network side to send data to a receiving side through RRC signaling and adopting a transmission mode 9, configuring the receiving side through high-level signaling and adopting a common pilot frequency to carry out channel estimation and demodulation when the receiving side needs to feed back PMI/CQI and schedules the receiving side in a Normal downlink subframe by using a downlink control information format 1A in a recessive way, and indicating that the receiving side does not need to carry out joint channel estimation and demodulation of a plurality of physical resource blocks by taking PRG as a unit; or,
the method is specifically used for configuring a network side to send data to a receiving side through RRC signaling and adopting a transmission mode 9, configuring the receiving side through high-level signaling and needing to feed back PMI/CQI, and implicitly indicating the receiving side to adopt demodulation pilot frequency for channel estimation and demodulation when demodulating the receiving side in a multicast broadcast single frequency network MBSFN downlink subframe by using a downlink control information format 1A, and indicating the receiving side not to need to carry out joint channel estimation and demodulation of a plurality of physical resource blocks by taking PRG as a unit.
4. A system for demodulation of Physical Resource Block (PRB) bonding demodulation comprises a receiving side;
a receiving side, configured to obtain, through receiving a radio resource control RRC signaling sent by a network side, that a transmission mode in which data is sent by the network side is a transmission mode 9, and obtain, through receiving the RRC signaling sent by the network side, that the network side configures a precoding matrix index PMI/channel quality information indicator CQI that needs to be fed back, perform, when performing blind detection on a subframe, a physical downlink control channel, and if the downlink control information obtained by the blind detection adopts a downlink control information format 2C, perform, when performing demodulation, channel estimation and demodulation by using a demodulation pilot frequency, and perform joint channel estimation and demodulation of multiple physical resource blocks by using a precoding resource group PRG as a unit; or,
the method comprises the steps that a transmission mode for obtaining data sent by a network side through receiving an RRC signaling sent by the network side is a transmission mode 9, when the configuration of a PMI/CQI which needs to be fed back is obtained by the network side through receiving the RRC signaling sent by the network side, when blind detection of a physical downlink control channel is carried out on a Normal subframe, if downlink control information obtained through the blind detection adopts a downlink control information format 1A, a common pilot frequency is adopted for channel estimation and demodulation during demodulation, and joint channel estimation and demodulation of a plurality of physical resource blocks are not required to be carried out according to the PRG as a unit; or,
the method comprises the steps that a transmission mode for obtaining data sent by a network side through receiving RRC signaling sent by the network side is a transmission mode 9, when the configuration of the network side needing feedback PMI/CQI is obtained through receiving the RRC signaling sent by the network side, when the blind detection of a physical downlink control channel is carried out on a multicast broadcast single frequency network MBSFN subframe, if downlink control information obtained through the blind detection adopts a downlink control information format 1A, a demodulation pilot frequency is adopted for channel estimation and demodulation during demodulation, and joint channel estimation and demodulation of a plurality of physical resource blocks are not needed according to the PRG unit.
5. A system for binding and demodulating a demodulation pilot frequency physical resource block comprises a network side and a receiving side, and is characterized in that:
the network side is used for indicating whether the receiving side carries out joint channel estimation and demodulation according to the PRG by configuring a transmission mode, a downlink control information format and a feedback mode;
the receiving side is used for receiving the configuration of the network side and determining whether to carry out joint channel estimation and demodulation according to the PRG according to the configuration of the network side;
the network side is specifically configured to configure, through radio resource control RRC signaling, that a transmission mode adopted by the network side to send data to the receiving side is a transmission mode 9, and configure a feedback mode of the receiving side as requiring feedback of a precoding matrix index PMI/channel quality information indicator CQI, and when the receiving side is scheduled by a downlink subframe, implicitly instruct the receiving side to perform channel estimation and demodulation by using a demodulation pilot frequency when performing demodulation by using a downlink control information format 2C, and instruct the receiving side to perform joint channel estimation and demodulation of a plurality of physical resource blocks according to a PRG unit; or,
the method is specifically used for configuring a network side to send data to a receiving side through RRC signaling and adopting a transmission mode 9, configuring the receiving side through high-level signaling and adopting a common pilot frequency to carry out channel estimation and demodulation when the receiving side needs to feed back PMI/CQI and schedules the receiving side in a Normal downlink subframe by using a downlink control information format 1A in a recessive way, and indicating that the receiving side does not need to carry out joint channel estimation and demodulation of a plurality of physical resource blocks by taking PRG as a unit; or,
the method is specifically used for configuring a network side to send data to a receiving side through RRC signaling and adopting a transmission mode 9, configuring the receiving side through high-level signaling and needing to feed back PMI/CQI, and implicitly indicating the receiving side to adopt demodulation pilot frequency for channel estimation and demodulation when demodulating the receiving side in a multicast broadcast single frequency network MBSFN downlink subframe by using a downlink control information format 1A, and indicating the receiving side not to need to carry out joint channel estimation and demodulation of a plurality of physical resource blocks by taking PRG as a unit.
6. The system of claim 5,
the receiving side obtains that the transmission mode configured by the network side is a transmission mode 9, the feedback mode is that PMI/CQI is required to be fed back, when blind detection is carried out on the physical downlink control channel, if downlink control information obtained by the blind detection adopts a downlink control information format 2C, demodulation pilot frequency is adopted to carry out channel estimation and demodulation when demodulation is carried out, and joint channel estimation and demodulation of a plurality of physical resource blocks are carried out according to the unit of a PRG (precoding resource group).
7. The system of claim 5,
the receiving side obtains that the transmission mode configured by the network side is a transmission mode 9, the feedback mode is that PMI/CQI needs to be fed back, and when a Normal subframe carries out blind detection on a physical downlink control channel, if DCI Format 1A is adopted for downlink control information obtained by the blind detection, a common pilot frequency is adopted for carrying out channel estimation and demodulation during demodulation, and joint channel estimation and demodulation of a plurality of physical resource blocks are not required to be carried out according to a PRG (precoding resource group) as a unit.
8. The system of claim 5,
the receiving side obtains that the transmission mode configured by the network side is a transmission mode 9, the feedback mode is that PMI/CQI needs to be fed back, and when the MBSFN subframe carries out blind detection on the physical downlink control channel, if DCI Format 1A is adopted for obtaining downlink control information by the blind detection, the demodulation pilot frequency is adopted for carrying out channel estimation and demodulation during demodulation, and joint channel estimation and demodulation of a plurality of physical resource blocks are not required to be carried out according to the unit of the PRG.
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| PCT/CN2012/072036 WO2012122912A1 (en) | 2011-03-17 | 2012-03-07 | Pilot and physical resource block bundling demodulation method and system |
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| CN103475606B (en) * | 2013-09-24 | 2016-08-17 | 重庆邮电大学 | Channel estimation methods based on reference signal under TM9 pattern in lte-a system |
| CN106714310B (en) * | 2015-11-16 | 2020-04-14 | 展讯通信（上海）有限公司 | Physical resource block binding detection method and device and user equipment |
| CN108667492B (en) * | 2017-03-31 | 2020-07-17 | 维沃移动通信有限公司 | Method and device for determining precoding granularity |
| KR102384877B1 (en) * | 2017-09-29 | 2022-04-08 | 삼성전자주식회사 | Method and apparatus for transmission and reception of data information in wirelss communication system |
| CN109802902B (en) * | 2017-11-16 | 2021-09-28 | 维沃移动通信有限公司 | Physical resource block binding size determining method, terminal equipment and network equipment |
| CN109802802B (en) * | 2017-11-17 | 2021-12-21 | 华为技术有限公司 | User equipment and access equipment |
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| Discussion on RB Bundling for DM-RS;Samsung;《3GPP TSG RAN WG1 Meeting #60bis，R1-102187》;20100416;第1-5页 * |
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