CN112929140A - Rate matching method for M-TRP - Google Patents
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- 102100031413 L-dopachrome tautomerase Human genes 0.000 claims description 57
- 101710093778 L-dopachrome tautomerase Proteins 0.000 claims description 57
- 101150006914 TRP1 gene Proteins 0.000 claims description 25
- LVTKHGUGBGNBPL-UHFFFAOYSA-N Trp-P-1 Chemical compound N1C2=CC=CC=C2C2=C1C(C)=C(N)N=C2C LVTKHGUGBGNBPL-UHFFFAOYSA-N 0.000 claims description 25
- 230000000737 periodic effect Effects 0.000 claims description 16
- 238000005259 measurement Methods 0.000 abstract description 22
- 238000013468 resource allocation Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 13
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
Abstract
The invention discloses a rate matching method for M-TRP, which comprises the following steps: determining different interference resources and TRS resource configurations according to the assumption of interference conditions among different TRPs; the network side configures different ZP CSI-RS resource configurations according to different assumptions; and configuring corresponding ZP CSI-RS resources for rate matching according to the configured CSI-RS resources among different TRPs, including NZP CSI-RS resources, CSI-IM resources and TRS resources. According to the rate matching method for the M-TRP, the terminal determines interference measurement resources and rate matching resource allocation configured by network side equipment according to different scenes of the N-TRP, the terminal performs interference measurement on the interference measurement resources, the serving base station adopts reference signal resources with zero power as the rate matching resources, and the serving base station does not send PDCCH (physical Downlink control channel) and PDSCH (physical Downlink shared channel) resources at the position of the rate matching resources.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a rate matching method for M-TRP.
Background
In the new radio access technology of the fifth generation, it is a hot topic for multiple transmission nodes or multiple antenna panels to transmit to the same user equipment. The framework for reference signal resources is further extended in 3GPP R17 to accommodate the application of M-TRP. However, a detailed discussion of the rate matching scheme corresponding to the extended CSI-RS framework is required.
M-TRP or multi-Panel technology can be applied to URLLC and eMBB including but not limited to 5G NR, and for this, we propose a rate matching method for M-TRP.
Disclosure of Invention
The main object of the present invention is to provide a rate matching method for M-TRP, which can effectively solve the problems in the background art.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method of rate matching for M-TRP, the method comprising the steps of:
determining different interference resources and TRS resource configurations according to the assumption of interference conditions among different TRPs;
and the network side configures different ZP CSI-RS resource configurations according to different assumptions.
Preferably, the method further comprises:
and configuring corresponding ZP CSI-RS resources for rate matching according to the configured CSI-RS resources among different TRPs, including NZP CSI-RS resources, CSI-IM resources and TRS resources.
Preferably, the network side includes a base station and a TRP.
Preferably, the rate matching parameters include at least one of the following parameters:
periodic zero power channel state information reference pilot; a semi-continuous zero-power channel state information reference pilot; aperiodic zero power channel state information reference pilot.
Preferably, the interference scenario assumption includes the following cases:
in scenario 1, the TRP1 is not interfered by the TRP2, and may be used to transmit the TRP1 alone or the TRP1 and TRP2 on non-overlapping PDSCH, and the UE reports the channel state information of the TRP 1;
scene 2, the TRP1 is interfered by the TRP2 and can be used for TRP1 and TRP2 to transmit on the overlapped PDSCH, the TRP1 and TRP2 are combined according to different redundancy versions, and the UE reports the channel state information of the TRP1 and the joint state information of the TRP1 and TRP 2;
in scene 3, the TRP2 is not interfered by the TRP1, and may be used to transmit the TRP2 alone or the TRP1 and TRP2 on the non-overlapping PDSCH, and the UE reports the channel state information of the TRP 2;
in scenario 4, the TRP2 is interfered by the TRP1 and may be used for TRP1 and TRP2 to transmit on the overlapped PDSCH, the TRP1 and TRP2 are combined according to different redundancy versions, and the UE reports the channel state information of the TRP2 and the joint CSI report of the joint state information of the TRP1 and TRP 2.
Preferably, the rate matching parameters are determined according to the CSI-IM resources sent by the network side.
Preferably, the rate matching parameter is determined according to an NZP CSI-RS resource transmitted by another TRP.
Preferably, the rate matching parameter is jointly determined according to the TRS resources transmitted by a plurality of TRPs.
Compared with the prior art, the invention has the following beneficial effects:
according to different scenes of the N-TRP, a terminal determines interference measurement resources and rate matching resource configuration configured by network side equipment, and the terminal carries out interference measurement on the interference measurement resources. The serving base station uses a reference signal resource with zero power as a rate matching resource, and does not send PDCCH and PDSCH resources at the position of the rate matching resource.
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FIG. 1 is a flowchart illustrating a method for rate matching of M-TRP according to the present invention;
FIG. 2 is a diagram of a M-TRP model for a rate matching method of M-TRP according to the present invention;
FIG. 3 is a resource allocation diagram of a rate matching method for M-TRP according to the present invention;
FIG. 4 is a second resource allocation diagram of a rate matching method for M-TRP according to the present invention;
FIG. 5 is a graph of the relationship between the period and the offset of the rate matching method for M-TRP according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Embodiments of the present application provide a mobile communication network (including but not limited to a fifth Generation mobile communication network (5th-Generation, 5G)), whose network architecture may include a plurality of network side devices (e.g., one or more types of base stations, transmission nodes, relays, etc.) and terminals (users, user equipment data cards, mobile devices, etc.). In the embodiment of the present application, a rate matching method, an apparatus, and a computer-readable storage medium that can be run on the above network architecture are provided, so as to solve the problem of rate matching when multi-TRP or multi-Panel performs joint transmission on the same terminal.
In a system including two or more network side devices (e.g., base stations or TRPs) and multiple terminals (e.g., UEs), multiple network side devices serve one UE at the same time, which is called joint transmission.
Fig. 1 is a flowchart illustrating a rate matching method according to an embodiment, and as shown in fig. 1, the method according to this embodiment is applied to a sending end, and the sending end may be a network side device. The method comprises the following steps.
And S110, the terminal or the network side determines the M-TRP transmission scene hypothesis.
The M-TRP transmission scene hypothesis can be directly set by a network side, and the network side transmits the corresponding transmission scene hypothesis to the terminal; or, the M-TRP transmission scenario assumption may be selected by the terminal, and the terminal transmits the corresponding transmission scenario assumption to the network side.
In one embodiment, the assumed transmission scenarios of two TRPs (TRP 1 and TRP2, respectively, as shown in fig. 2) include the following cases:
scenario 1, TRP1 is not interfered by TRP2 and may be used for TRP1 alone or TRP1 and TRP2 transmitted on non-overlapping PDSCH. And the UE reports the channel state information of the TRP 1.
Scenario 2, TRP1 is interfered with TRP2 and is available for TRP1 and TRP2 transmissions on overlapping PDSCH. TRP1 and TRP2 were merged according to different redundancy versions. The UE reports the channel state information of the TRP1 and the joint state information of the TRP1 and the TRP 2.
Scenario 3, TRP2 is not interfered by TRP1 and may be used to transmit TRP2 alone or TRP1 and TRP2 on non-overlapping PDSCH. And the UE reports the channel state information of the TRP 2.
Scenario 4, TRP2 is interfered with TRP1 and is available for TRP1 and TRP2 transmissions on overlapping PDSCH. TRP1 and TRP2 were merged according to different redundancy versions. The UE reports the channel state information of TRP2 and the joint CSI reporting of the joint state information of TRP1 and TRP 2.
And S120, selecting rate matching parameter configuration according to the scene hypothesis.
In a first exemplary embodiment, for scenario 1, a rate matching resource configuration is configured for TRP1, wherein the rate matching parameters include, but are not limited to, at least one of the following parameters:
and under the condition that the rate matching parameter is a periodic zero-power channel state information reference pilot frequency (periodic ZP CSI-RS), wherein the periodic ZP CSI-RS takes the value of a zero-power channel state information reference pilot frequency resource Set ZP CSI-RSresource Set.
And under the condition that the rate matching parameter is a semi-continuous zero-power channel state information reference pilot frequency (semi-continuous ZP CSI-RS), wherein the semi-continuous ZP CSI-RS takes the value of a zero-power channel state information reference pilot frequency resource Set ZP CSI-RS resource Set.
And under the condition that the rate matching parameter is an aperiodic zero-power channel state information reference pilot frequency (aperiodic ZP CSI-RS), wherein the aperiodic ZP CSI-RS takes the value of a zero-power channel state information reference pilot frequency resource Set ZP CSI-RS resource Set.
For TRP1, the interference measurement resources may include at least one of:
the network side sends a period NZP CSI-RS resource and a CSI-IM resource which are used for measuring a channel and interference of TRP 1;
the network side sends aperiodic NZP CSI-RS resources and CSI-IM resources which are used for measuring the channel and the interference of TRP 1;
the network side sends semi-continuous NZP CSI-RS resources and CSI-IM resources which are used for measuring the channel and the interference of TRP 1;
and the network side sends TRS resources for tracking time frequency domain.
For TRP2, the interference measurement resources may include at least one of:
the network side sends a period NZP CSI-RS resource and a CSI-IM resource which are used for measuring a channel and interference of TRP 2;
the network side sends aperiodic NZP CSI-RS resources and CSI-IM resources which are used for measuring the channel and the interference of TRP 2;
the network side sends semi-continuous NZP CSI-RS resources and CSI-IM resources which are used for measuring the channel and the interference of TRP 2;
the network side does not send interference measurement resources;
and the network side sends TRS resources for tracking time frequency domain.
The rate matching resource configuration at least comprises:
resource index (zp-CSI-RS-resource id), resource bitmap (resourcemaping), period offset setting (periodicityAndOffset).
Wherein, for the zp-CSI-RS-resource id to represent the configured number of zp CSI-RS resources, a plurality of zp CSI-RS resources exist in the same zp CSI-RS resource set (zp-CSI-RS-resource set) at the same time.
As shown in fig. 3, for the resource bitmap, at least:
in TRP1 transmitted PDSCH, corresponding to the position of Resource Element (RE) corresponding to CSI-IM resource transmitted by TRP 1;
in TRP2 transmitting PDSCH, the CSI-IM resources (if configured) corresponding to TRP2 transmission correspond to the Resource Element (RE) locations.
In TRP1 transmitted PDSCH, corresponding to the position of Resource Block (RB) corresponding to TRS resource transmitted by TRP 2;
in TRP2 transmitted PDSCH, Resource Block (RB) locations corresponding to TRS resources transmitted at TRP 1.
For the period offset setting, each zp csi-rs resource can be set to be period, non-period and semi-continuous, and the specific offset is the same as the corresponding interference measurement resource.
In a second exemplary embodiment, corresponding to scenario assumption 2, rate matching resource configurations are configured for TRP1 and TRP2, wherein the rate matching parameters include, but are not limited to, at least one of the following:
and under the condition that the rate matching parameter is a periodic zero-power channel state information reference pilot frequency (periodic ZP CSI-RS), wherein the periodic ZP CSI-RS takes the value of a zero-power channel state information reference pilot frequency resource Set ZP CSI-RSresource Set.
And under the condition that the rate matching parameter is a semi-continuous zero-power channel state information reference pilot frequency (semi-continuous ZP CSI-RS), wherein the semi-continuous ZP CSI-RS takes the value of a zero-power channel state information reference pilot frequency resource Set ZP CSI-RS resource Set.
And under the condition that the rate matching parameter is an aperiodic zero-power channel state information reference pilot frequency (aperiodic ZP CSI-RS), wherein the aperiodic ZP CSI-RS takes the value of a zero-power channel state information reference pilot frequency resource Set ZP CSI-RS resource Set.
For TRP1, the interference measurement resources may include at least one of:
the network side sends a period NZP CSI-RS resource 1, an NZP CSI-RS resource 2 and a CSI-IM resource, and is used for measuring a channel and interference of TRP 1;
the network side sends an aperiodic NZP CSI-RS resource 1, an NZP CSI-RS resource 2 and a CSI-IM resource, and is used for measuring a channel and interference of TRP 1;
the network side sends a semi-continuous NZP CSI-RS resource 1, an NZP CSI-RS resource 2 and a CSI-IM resource, and is used for measuring a channel and interference of TRP 1;
and the network side sends TRS resources for tracking time frequency domain.
Wherein, the NZP CSI-RS resource 1 is used for measuring the channel of TRP1, and the NZP CSI-RS resource is used for measuring the interference of the overlapped PDSCH.
For TRP2, the interference measurement resources may include at least one of:
the network side sends a period NZP CSI-RS resource and a CSI-IM resource which are used for measuring a channel and interference of TRP 2;
the network side sends aperiodic NZP CSI-RS resources and CSI-IM resources which are used for measuring the channel and the interference of TRP 2;
the network side sends semi-continuous NZP CSI-RS resources and CSI-IM resources which are used for measuring the channel and the interference of TRP 2;
the network side does not send interference measurement resources;
and the network side sends TRS resources for tracking time frequency domain.
The rate matching resource configuration at least comprises:
resource index (zp-CSI-RS-resource id), resource bitmap (resourcemaping), period offset setting (periodicityAndOffset).
Wherein, for the zp-CSI-RS-resource id to represent the configured number of zp CSI-RS resources, a plurality of zp CSI-RS resources exist in the same zp CSI-RS resource set (zp-CSI-RS-resource set) at the same time.
As shown in fig. 4, for the resource bitmap, at least:
in TRP1 transmitted PDSCH, corresponding to the position of Resource Element (RE) corresponding to CSI-IM resource transmitted by TRP 1;
in the TRP2 transmitted PDSCH, corresponding to the position of a Resource Element (RE) corresponding to an NZP CSI-RS resource 1 transmitted by TRP 1;
in TRP2 transmitted PDSCH, corresponding to CSI-IM resource (if configured) transmitted by TRP2, corresponding to the position of Resource Element (RE);
in TRP1 transmitted PDSCH, corresponding to the position of Resource Block (RB) corresponding to TRS resource transmitted by TRP 2;
in TRP2 transmitted PDSCH, Resource Block (RB) locations corresponding to TRS resources transmitted at TRP 1.
For the period offset setting, each zp csi-rs resource can be set to be period, non-period and semi-continuous, and the specific offset is the same as the corresponding interference measurement resource.
In a third exemplary embodiment, for scenario 3, rate matching resource configurations are configured for TRP1 and TRP2, wherein the rate matching parameters include, but are not limited to, at least one of the following:
and under the condition that the rate matching parameter is a periodic zero-power channel state information reference pilot frequency (periodic ZP CSI-RS), wherein the periodic ZP CSI-RS takes the value of a zero-power channel state information reference pilot frequency resource Set ZP CSI-RSresource Set.
And under the condition that the rate matching parameter is a semi-continuous zero-power channel state information reference pilot frequency (semi-continuous ZP CSI-RS), wherein the semi-continuous ZP CSI-RS takes the value of a zero-power channel state information reference pilot frequency resource Set ZP CSI-RS resource Set.
And under the condition that the rate matching parameter is an aperiodic zero-power channel state information reference pilot frequency (aperiodic ZP CSI-RS), wherein the aperiodic ZP CSI-RS takes the value of a zero-power channel state information reference pilot frequency resource Set ZP CSI-RS resource Set.
For TRP1, the interference measurement resources may include at least one of:
the network side sends a period NZP CSI-RS resource and a CSI-IM resource which are used for measuring a channel and interference of TRP 1;
the network side sends aperiodic NZP CSI-RS resources and CSI-IM resources which are used for measuring the channel and the interference of TRP 1;
the network side sends semi-continuous NZP CSI-RS resources and CSI-IM resources which are used for measuring the channel and the interference of TRP 1;
the network side does not send interference measurement resources.
For TRP2, the interference measurement resources may include at least one of:
the network side sends a period NZP CSI-RS resource and a CSI-IM resource which are used for measuring a channel and interference of TRP 2;
the network side sends aperiodic NZP CSI-RS resources and CSI-IM resources which are used for measuring the channel and the interference of TRP 2;
and the network side sends semi-continuous NZP CSI-RS resources and CSI-IM resources for measuring the channel and the interference of TRP 2.
The rate matching resource configuration at least comprises:
resource index (zp-CSI-RS-resource id), resource bitmap (resourcemaping), period offset setting (periodicityAndOffset).
Wherein, for the zp-CSI-RS-resource id to represent the configured number of zp CSI-RS resources, a plurality of zp CSI-RS resources exist in the same zp CSI-RS resource set (zp-CSI-RS-resource set) at the same time.
Wherein, for the resource bitmap, at least:
in TRP2 transmitted PDSCH, corresponding to the position of Resource Element (RE) corresponding to CSI-IM resource transmitted by TRP 1;
in TRP1 transmitted PDSCH, corresponding to CSI-IM resource (if configured) transmitted by TRP2, corresponding to the position of Resource Element (RE);
in TRP1 transmitted PDSCH, corresponding to the position of Resource Block (RB) corresponding to TRS resource transmitted by TRP 2;
in TRP2 transmitted PDSCH, Resource Block (RB) locations corresponding to TRS resources transmitted at TRP 1.
For the period offset setting, each zp csi-rs resource can be set to be period, non-period and semi-continuous, and the specific offset is the same as the corresponding interference measurement resource.
In a fourth exemplary embodiment, corresponding to scenario assumption 4, rate matching resource configurations are configured for TRP1 and TRP2, wherein the rate matching parameters include, but are not limited to, at least one of the following:
and under the condition that the rate matching parameter is a periodic zero-power channel state information reference pilot frequency (periodic ZP CSI-RS), wherein the periodic ZP CSI-RS takes the value of a zero-power channel state information reference pilot frequency resource Set ZP CSI-RSresource Set.
And under the condition that the rate matching parameter is a semi-continuous zero-power channel state information reference pilot frequency (semi-continuous ZP CSI-RS), wherein the semi-continuous ZP CSI-RS takes the value of a zero-power channel state information reference pilot frequency resource Set ZP CSI-RS resource Set.
And under the condition that the rate matching parameter is an aperiodic zero-power channel state information reference pilot frequency (aperiodic ZP CSI-RS), wherein the aperiodic ZP CSI-RS takes the value of a zero-power channel state information reference pilot frequency resource Set ZP CSI-RS resource Set.
For TRP1, the interference measurement resources may include at least one of:
the network side sends a period NZP CSI-RS resource 1, an NZP CSI-RS resource 2 and a CSI-IM resource, and is used for measuring a channel and interference of TRP 1;
the network side sends an aperiodic NZP CSI-RS resource 1, an NZP CSI-RS resource 2 and a CSI-IM resource, and is used for measuring a channel and interference of TRP 1;
the network side sends a semi-continuous NZP CSI-RS resource 1, an NZP CSI-RS resource 2 and a CSI-IM resource, and is used for measuring a channel and interference of TRP 1;
the network side does not send interference measurement resources;
and the network side sends TRS resources for tracking time frequency domain.
The NZP CSI-RS resource 1 is used for measuring a channel of the TRP1 without interference, and the NZP CSI-RS resource is used for measuring interference of the overlapped PDSCH.
For TRP2, the interference measurement resources may include at least one of:
the network side sends a period NZP CSI-RS resource and a CSI-IM resource which are used for measuring a channel and interference of TRP 2;
the network side sends aperiodic NZP CSI-RS resources and CSI-IM resources which are used for measuring the channel and the interference of TRP 2;
the network side sends semi-continuous NZP CSI-RS resources and CSI-IM resources which are used for measuring the channel and the interference of TRP 2;
and the network side sends TRS resources for tracking time frequency domain.
The rate matching resource configuration at least comprises:
resource index (zp-CSI-RS-resource id), resource bitmap (resourcemaping), period offset setting (periodicityAndOffset).
Wherein, for the zp-CSI-RS-resource id to represent the configured number of zp CSI-RS resources, a plurality of zp CSI-RS resources exist in the same zp CSI-RS resource set (zp-CSI-RS-resource set) at the same time.
Wherein, for the resource bitmap, at least:
in TRP1 transmitted PDSCH, corresponding to the position of Resource Element (RE) corresponding to CSI-IM resource transmitted by TRP 1;
in the TRP1 transmitted PDSCH, corresponding to the position of a Resource Element (RE) corresponding to an NZP CSI-RS resource 1 transmitted by TRP 2;
in TRP2 transmitted PDSCH, corresponding to CSI-IM resource (if configured) transmitted by TRP2, corresponding to the position of Resource Element (RE);
in TRP1 transmitted PDSCH, corresponding to the position of Resource Block (RB) corresponding to TRS resource transmitted by TRP 2;
in TRP2 transmitted PDSCH, Resource Block (RB) locations corresponding to TRS resources transmitted at TRP 1.
For the period bias setting, each zp csi-rs resource can be set to be period, non-period and semi-persistent, and the specific bias is the same as the interference measurement resource corresponding to the bias, as shown in fig. 5.
S130, sending rate matching parameter through high layer signaling and/or physical layer signaling
In an embodiment, sending the N sets of rate matching parameters through higher layer signaling and/or physical layer signaling may include:
for periodic ZP CSI-RS resources, the IE in PDSCH-Config may be signaled by the RRC higher layer: the period-ZP-CSI-RS-ResourceSetToAddModList is directly configured, and the network side carries out rate matching at the corresponding periodic position; alternatively, for aperiodic ZP CSI-RS resources, the PDSCH-Config can be signaled by the RRC higher layer with IE: the method comprises the steps of configuring aperiodic-ZP-CSI-RS-resource Information ToAddModList, and then activating through a Downlink Control Information (DCI) of a load and PDCCH; for semi-persistent ZP CSI-RS resources, the IE in PDSCH-Config may be signaled by the RRC higher layer: and configuring sp-ZP-CSI-RS-ResourceSetToAddModList, activating through the MAC CE loaded on the PDSCH, and periodically performing rate matching after activation until the network side is deactivated.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A method for rate matching of M-TRP, characterized in that it comprises the following steps:
determining different interference resources and TRS resource configurations according to the assumption of interference conditions among different TRPs;
and the network side configures different ZP CSI-RS resource configurations according to different assumptions.
2. A method of rate matching for M-TRP according to claim 1, characterized in that: the method further comprises the following steps:
and configuring corresponding ZP CSI-RS resources for rate matching according to the configured CSI-RS resources among different TRPs, including NZP CSI-RS resources, CSI-IM resources and TRS resources.
3. A method of rate matching for M-TRP according to claim 1, characterized in that: the network side comprises a base station and a TRP.
4. A method of rate matching for M-TRP according to one of claims 1 or 2, characterized in that: the rate matching parameters include at least one of:
periodic zero power channel state information reference pilot; a semi-continuous zero-power channel state information reference pilot; aperiodic zero power channel state information reference pilot.
5. A method of rate matching for M-TRP according to claim 1, characterized in that: the interference scenario assumption includes the following cases:
in scenario 1, the TRP1 is not interfered by the TRP2, and may be used to transmit the TRP1 alone or the TRP1 and TRP2 on non-overlapping PDSCH, and the UE reports the channel state information of the TRP 1;
scene 2, the TRP1 is interfered by the TRP2 and can be used for TRP1 and TRP2 to transmit on the overlapped PDSCH, the TRP1 and TRP2 are combined according to different redundancy versions, and the UE reports the channel state information of the TRP1 and the joint state information of the TRP1 and TRP 2;
in scene 3, the TRP2 is not interfered by the TRP1, and may be used to transmit the TRP2 alone or the TRP1 and TRP2 on the non-overlapping PDSCH, and the UE reports the channel state information of the TRP 2;
in scenario 4, the TRP2 is interfered by the TRP1 and may be used for TRP1 and TRP2 to transmit on the overlapped PDSCH, the TRP1 and TRP2 are combined according to different redundancy versions, and the UE reports the channel state information of the TRP2 and the joint CSI report of the joint state information of the TRP1 and TRP 2.
6. A method of rate matching for M-TRP according to one of claims 1 or 2, characterized in that: and determining a rate matching parameter according to the CSI-IM resource sent by the network side.
7. A method of rate matching for M-TRP according to one of claims 1 or 2, characterized in that: and determining a rate matching parameter according to the NZP CSI-RS resource sent by the other TRP.
8. A method of rate matching for M-TRP according to one of claims 1 or 2, characterized in that: and jointly determining a rate matching parameter according to TRS resources sent by a plurality of TRPs.
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