CN108811126B

CN108811126B - Information transmission method and device

Info

Publication number: CN108811126B
Application number: CN201710314109.6A
Authority: CN
Inventors: 梁津垚; 任海豹; 李元杰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-05-05
Filing date: 2017-05-05
Publication date: 2022-04-05
Anticipated expiration: 2037-05-05
Also published as: CN108811126A; WO2018202168A1

Abstract

The embodiment of the invention discloses an information transmission method and an information transmission device, wherein the information transmission method comprises the following steps: the method comprises the steps that user equipment receives scheduling information of downlink resources, wherein the scheduling information of the downlink resources comprises information of downlink scheduling resources of at least two sites; and the user equipment sends the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources. By adopting the embodiment of the invention, the base station can select the CSI measuring result which is more matched with the channel condition during data transmission according to the overlapping information and/or the interference indication information of the downlink scheduling resources sent by the user equipment, therefore, the embodiment can send the overlapping information and/or the interference indication information of the downlink scheduling resources through the air interface of the user equipment to replace an X2 port to transmit the scheduling information, which is beneficial to reducing the time delay; and the base station can select the CSI measuring result which is consistent with the channel condition during data transmission as much as possible according to the information sent by the user equipment, so that the scheduling result is more accurate.

Description

Information transmission method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information transmission method and apparatus.

Background

At present, Coordinated Multipoint Transmission (CoMP) is an effective method for solving the inter-cell interference problem and improving the throughput of edge users. In order to implement CoMP scheduling, the serving base station needs to know the downlink Channel condition from each station to the target user, that is, the downlink Channel condition is determined by using a CSI Reference Signal (CSI-RS).

Information interaction among sites in a cooperation set is usually transmitted through an X2 port, for example, the information interacted among the sites may be a scheduling result, but due to unstable information interaction delay of an X2 port, for example, in a limited cooperation scenario, the scheduling result interacted among the sites is outdated information, or a scheduling result when data is issued cannot be obtained, so that a difference between a CSI measurement result selected according to the scheduling result and a channel condition when the data is transmitted is large, so that a parameter selection or a transmission mode selection during the data transmission has a large deviation, and system performance is affected.

Disclosure of Invention

Embodiments of the present invention provide an information transmission method and apparatus, where overlapping information and/or interference indication information of downlink scheduling resources is sent through a user equipment, that is, an air interface, which is helpful for a base station to select a more appropriate CSI measurement result, so as to improve system performance.

In a first aspect, an embodiment of the present invention provides an information transmission method, where in the information transmission method, a user equipment may receive scheduling information of a downlink resource, where the scheduling information of the downlink resource includes information of downlink scheduling resources of at least two stations; the ue may send overlapping information of the downlink scheduling resource and/or interference indication information of the downlink scheduling resource, where the overlapping information is used to indicate an overlapping situation of downlink scheduling resources configured for the ue by at least two stations, and the overlapping information is based on the downlink scheduling resources; the interference indication information is used for indicating an interference hypothesis corresponding to the downlink scheduling resource, and the interference indication information is based on the information of the downlink scheduling resource.

The station may be a network device, such as a base station or a radio frequency unit, such as a remote radio frequency unit RRU, where the base station includes a TRP or a TP.

In a second aspect, an embodiment of the present invention provides another information transmission method, in the information transmission method, an execution main body for executing the information transmission method may be a network device, such as a base station, or an RRU, for example, the network device sends scheduling information of downlink resources to a user equipment, where the scheduling information of the downlink resources includes information of downlink scheduling resources of at least two stations; receiving overlapping information of the downlink scheduling resources and/or interference indication information of the downlink scheduling resources from the user equipment; the overlapping information is used for indicating the overlapping condition of the downlink scheduling resources configured for the user equipment by the at least two stations, and the overlapping information is based on the information of the downlink scheduling resources; the interference indication information is used for indicating an interference hypothesis corresponding to the downlink scheduling resource configured by the at least two stations for the user equipment, and the interference indication information is based on the information of the downlink scheduling resource.

The scheduling information of the downlink resource sent by the network device to the user equipment may be scheduling information of the downlink resource sent by the network device to multiple sites simultaneously, that is, the scheduling information includes information of the downlink scheduling resource of each site, that is, the network device may send the downlink scheduling resources of multiple network devices through one high-level signaling or physical layer signaling, or may send the downlink scheduling resources of multiple network devices through multiple high-level signaling or physical layer signaling, respectively. Correspondingly, the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources sent by the user equipment may also be sent to multiple network devices at the same time, or may also be sent separately for each network device.

Optionally, when the ue sends the overlapping information of the downlink scheduling resource, the base station may select a corresponding interference hypothesis for the downlink scheduling resource based on the overlapping information, and further select a CSI measurement result corresponding to the interference hypothesis.

For example, in the part where downlink scheduling resources of TRP1 and TRP2 overlap at two sites, TRP1 selects an interference hypothesis where TRP2 interference exists; in the non-overlapping parts of the downlink scheduling resources of the two sites, the TRP1 selects an interference hypothesis without TRP2 interference, further, the TRP1 selects a CSI measurement result corresponding to the interference hypothesis with TRP2 interference in the overlapping parts of the downlink scheduling resources, and the selected CSI measurement result is used for selecting matched transmission parameters for data transmission, so that the system performance is improved. That is, in this embodiment, the user equipment may send the overlapping information and/or the interference indication information of the downlink scheduling resource through an air interface, instead of the X2 interface, to transmit the scheduling information, which is helpful to reduce the delay; and the base station can select the CSI measuring result which is consistent with the channel condition during data transmission as much as possible according to the information sent by the user equipment, so that the scheduling result is more accurate.

Optionally, when the user equipment sends the interference indication information of the downlink scheduling resource, the base station may directly select the CSI measurement result corresponding to the interference indication information, and select, according to the CSI measurement result, a CSI measurement result that is as consistent as possible with the channel condition during data transmission for the data transmission channel, so that the scheduling result is more accurate.

Optionally, when the ue sends the overlapping information of the downlink scheduling resources and the interference indication information, the interference indication information may be used to indicate an interference hypothesis corresponding to an overlapping situation of the downlink scheduling resources configured for the ue by at least two stations. In this way, the station can determine the interference hypothesis of the downlink scheduling resource according to the overlapping situation of the downlink scheduling resource and the interference hypothesis of each overlapping situation.

Therefore, in this embodiment, the user equipment may send the overlapping information and/or the interference indication information of the downlink scheduling resource through an air interface, instead of the X2 interface to transmit the scheduling information, which is helpful for reducing the delay; and the base station can select the CSI measuring result which is consistent with the channel condition during data transmission as much as possible according to the information sent by the user equipment, so that the scheduling result is more accurate.

Optionally, the scheduling information of the downlink resource received by the user equipment may be information of the downlink scheduling resource received by the user equipment from at least two stations. The information about the overlap of the downlink scheduling resources sent by the ue may be the overlap of the downlink scheduling resources of multiple stations in the time-frequency domain.

Optionally, since the overlap information is used to indicate an overlap condition of the downlink scheduling resources configured by at least two stations for the user equipment, the overlap information may also be resource grouping information, that is, overlapping part of resource grouping information in the downlink scheduling resources, or non-overlapping part of resource grouping information, or overlapping information indicating an overlap condition on a predefined resource grouping, or overlapping parts of different numbers of stations are different resource grouping information (for example, overlapping parts of resources of 2 stations and overlapping parts of resources of 3 stations are different resource groupings).

Optionally, the information of the downlink scheduling resource may be carried in a physical layer signaling or a higher layer signaling. When the information of the downlink scheduling resource is carried in the physical layer signaling, the physical layer signaling may only include a field for indicating the information of the downlink scheduling resource. For example, the physical layer signaling adopts a first DCI format, where the first DCI format only includes a Resource Block Assignment field (Resource Block Assignment field), or only includes a Resource Block Assignment field and other fields, where the fields are also used to indicate a Resource condition of downlink scheduling resources. The size Payload size of the Payload of the first DCI format is smaller than the size Payload size of the Payload of the third DCI format. The third DCI format is a general DCI format, and includes not only a resource block indication field but also a field for demodulating data. Optionally, when the information of the downlink scheduling resource is carried in the physical layer signaling, a third DCI format may also be used, where other fields except for a field used for indicating the resource condition of the downlink scheduling resource in the third DCI format may be null.

Accordingly, the first DCI format only includes a field indicating information of downlink scheduling resources, and therefore, a second DCI format may be designed, where the second DCI format may include a field other than the field indicating information of downlink scheduling resources, for example, the second DCI format is a field including information for indicating demodulation data. In this way, the base station can respectively issue the physical layer signaling message of the first DCI format and the physical layer signaling message of the second DCI format, so that the user equipment can acquire data from the corresponding downlink scheduling resource according to the physical layer signaling message of the first DCI format and the physical layer signaling message of the second DCI format and demodulate the data.

Optionally, the information of the downlink scheduling resource is carried in a high layer signaling, and the information of the downlink scheduling resource may include time-frequency domain information of a reference signal used for downlink channel estimation. The user equipment can determine the downlink resource scheduled by the base station by using the time-frequency domain information. For example, the CSI-RS configured by the higher layer signaling is sent over the full bandwidth, which means that the downlink resource scheduled by the base station includes all subbands in the downlink bandwidth; and the higher-layer configured CSI-RS is sent on the first subband, which means that the downlink resource scheduled by the base station comprises the first subband in the downlink bandwidth.

Optionally, the ue sends the overlapping information of the downlink scheduling resources, where the overlapping information includes a scheduling resource overlapping indication corresponding to a resource packet in a downlink bandwidth, the resource packet takes a resource block RB, a resource block group RBG, or a frequency band as a granularity, and the scheduling resource overlapping indication is information for indicating overlapping or information for indicating non-overlapping. The frequency band is a frequency band with a bandwidth smaller than a full band, such as a sub-band (subband), a band width part (band width part), a PRB set (PRB bundling), a partial band (partial band), a reporting band (reporting band), and the like. For example, the division of the downlink full bandwidth into several frequency bands is predefined by the protocol, such as 6 frequency band blocks per 20M full bandwidth, each frequency band block being the frequency band. The user equipment may transmit the resource overlap information corresponding to each of the 6 frequency bands at the granularity of the frequency bands. The resource grouping of the downlink bandwidth corresponds to different grouping sizes, and the length of the overlapping information or the interference indication information transmitted by the user equipment is also different, for example, the bit number of the overlapping information or the interference indication information transmitted on each frequency band or resource block is the same, and the full bandwidth can be grouped into 6 frequency band blocks or 100 RBs, so the bit length for transmitting the overlapping information or the interference indication information with the frequency band granularity is smaller than the bit length for transmitting the overlapping information or the interference indication information with the resource block RB granularity.

The resource packets may be divided in a fixed granularity, that is, the size of the resources included in each resource packet is the same, or the size of the resource packet is a fixed value, and the base station and the user equipment predefine resource packets are divided in units of RBs, RBGs, or frequency bands, the overlap information may be a scheduling resource overlap indication corresponding to each resource packet, where the scheduling resource overlap indication may be used to indicate that the resource packets overlap or do not overlap, or may indicate that downlink scheduling resources of several base stations overlap on the resource packet. For example, each resource packet includes one RB, the ue may feed back a Bitmap to indicate overlapping information of scheduled resources, e.g., the ue feeds back 0010 to the base station, and the base station may know that the third resource packet or the third RB is an RB that is scheduled by multiple stations at the same time, that is, an overlapping RB, and then the base station may select, for the third RB of the downlink scheduled resource, a CSI measurement result corresponding to an interference hypothesis where interference from other stations exists, and on other RBs, the base station selects a CSI measurement result corresponding to an interference hypothesis where interference from other stations does not exist.

The resource groups may also be divided in an unfixed granularity, that is, the sizes of the resources included in different resource groups are different, or the size of the resource group is a non-fixed value, so that the overlapping information of the scheduling resources needs to include the information of the resource group in addition to the scheduling resource overlapping indication corresponding to the resource group in the downlink bandwidth. The information of the resource grouping is used to indicate the information of the resource grouping corresponding to the scheduling resource overlap indication, and the information of the resource grouping may be used to indicate different resource groups.

Optionally, the information of the resource grouping may include a resource boundary indication or a resource proportion indication or a resource boundary indication or a resource grouping index. Wherein the resource demarcation indicates information indicative of a resource demarcation for different overlapping conditions; the resource proportion indicates information indicating resource proportions for different overlapping situations; the resource boundary indicates starting position information and ending position information of resources for indicating different overlapping conditions; the resource grouping index is used for indicating the number of the resource grouping, and the size of the resource grouping is fixed.

For example, the user equipment sends a resource demarcation indication and a scheduling resource overlapping indication corresponding to different resource blocks corresponding to the resource demarcation indication, and if the resource scheduled by the TRP1 includes 1 st to 5 th RBs and the resource scheduled by the TRP2 includes 2 nd to 8 th RBs, the overlapping information of the downlink scheduling resource sent by the user equipment to the TRP1 includes that the resource demarcation indication is 2 and the scheduling resource overlapping indication is 01; when the TRP1 receives the overlapping information of the downlink scheduling resource, it can be known that the resource block smaller than 2 in the downlink scheduling resource scheduled by the TRP1 has no interference of other sites; resource blocks greater than or equal to 2 have interference from other stations.

Alternatively, the overlapping information of the scheduled resources may include information indicating resources in an overlapping portion of the resources or information indicating resources in a non-overlapping portion of the resources. That is, the base station and the user equipment may set information indicating only the resource of the overlapping portion of the resources or information of the resource of the non-overlapping portion of the resources in a predefined manner.

Wherein the information for indicating the resource of the resource overlapping portion may be a resource boundary indication or a resource grouping index. The resource boundary indicates start position information and end position information for indicating overlapped resources; the resource packet index is used to indicate the number of the resource packet, wherein the size of the resource packet is fixed. For example, assuming that the resources scheduled by the TRP1 include 1 st to 5 th RBs and the resources scheduled by the TRP2 include 2 nd to 8 th RBs, the overlapping information of the downlink scheduling resources transmitted by the user equipment to the TRP1 includes resource boundary indications of 2 and 5; thus, when the TRP1 receives the overlapping information of the downlink scheduling resources, it can be known that the resource of the resource overlapping part in the downlink resource scheduled by the TRP1 is the 2 nd to 5 th RB; for another example, the overlapping information of the downlink scheduling resources transmitted by the user equipment to the TRP1 includes the

numbers

2, 3, 4, and 5 of the resource packets, so that when the TRP1 receives the overlapping information of the downlink scheduling resources, it can be known that the resource of the overlapping part of the resources in the downlink resources scheduled by the TRP1 is the 2 nd to 5 th RB.

Optionally, the resource boundary indication may indicate start position information and end position information of multiple overlapping blocks of resources. For example, assuming that the resources scheduled by the TRP1 include 1 st to 4 th RBs and 6 th to 8 th RBs, i.e. discontinuous resources, and the resources scheduled by the TRP2 include 2 nd to 8 th RBs, the overlapping information of the downlink scheduling resources transmitted by the user equipment to the TRP1 includes resource boundary indications of (2; 4) and (6; 8); thus, when the TRP1 receives the overlap information of the downlink scheduling resources, it can be seen that the resources of the resource overlap portion of the downlink resources scheduled by the TRP1 are the 2 nd to 4 th RBs and the 6 th to 8 th RBs. Optionally, the number of the resource packet included in the resource packet index may also be discontinuous to indicate the overlapping multiple resource blocks.

Optionally, the overlapping information of the downlink scheduling resource and/or the interference indication information of the downlink scheduling resource may be sent by carrying an uplink data channel or an uplink control channel.

When the overlapped information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources are sent by being carried in an uplink data channel, the overlapped information of the scheduling resources and/or the interference indication information of the scheduling resources are carried in a preset resource region of the uplink data channel for sending, or the overlapped information of the scheduling resources and/or the interference indication information of the scheduling resources are carried in a mode of punching partial data in the uplink data channel when the overlapped information of the scheduling resources and/or the interference indication information of the scheduling resources are carried in the uplink data channel for sending, or the overlapped information of the scheduling resources and/or the interference indication information of the scheduling resources are jointly coded and then sent with uplink data in the uplink data channel.

When the overlapped information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources are sent by being carried in an uplink control channel, the overlapped information of the scheduling resources and/or the interference indication information of the scheduling resources are sent by using a configured period and an offset; or transmitting with the same period and offset as another information in the uplink control channel; or the uplink control information and the uplink control information in the uplink control channel are coded together and then transmitted.

Optionally, the interference indication information of the downlink scheduling resource includes an interference indication of a resource packet included in the scheduling resource or a difference value of the interference indication of the included resource packet, where the resource packet takes a resource block RB, a resource block group RBG, or a frequency band as a granularity.

The resource grouping may be divided at a fixed granularity or at an unfixed granularity. If the division is performed with a fixed granularity, the ue may send an interference indication corresponding to each resource packet or a difference between the interference indications. For example, assuming that the resources scheduled by the TRP1 include 1 st to 5 th RBs, and the resources scheduled by the TRP2 include 2 nd to 8 th RBs, the interference indication corresponding to each resource grouping RB sent by the user equipment may be 01111000, so that when receiving the interference indication information, the TRP1 may know that the CSI measurement result corresponding to the interference hypothesis 1 is selected for the 2 nd to 5 th RBs, and the CSI measurement result corresponding to the interference hypothesis 0 is selected for the 1 st RB.

Optionally, if the resource grouping is divided by a non-fixed granularity, the interference indication information further includes information of the resource grouping corresponding to the interference hypothesis indication.

Optionally, the information of the resource grouping may include: a resource demarcation indication or a resource proportion indication or a resource boundary indication or a resource grouping index. Wherein the resource demarcation indicates information indicative of a resource demarcation for different overlapping conditions; the resource proportion indicates information indicating resource proportions for different overlapping situations; the resource boundary indicates starting position information and ending position information of resources for indicating different overlapping conditions; the resource grouping index is used for indicating the number of the resource grouping, and the size of the resource grouping is fixed. For example, assuming that the resources scheduled by the TRP1 include 1 st to 5 th RBs, and the resources scheduled by the TRP2 include 2 nd to 8 th RBs, the interference indication information corresponding to each resource grouping RB sent by the user equipment includes information of the resource grouping and an interference indication of the resource grouping, where the information of the resource grouping may be a resource demarcation indication (2; 5), that is, the 1 st RB is a group, and the 2 nd to 5 th RBs are a group, the interference indication of the two resource groupings is 01, so that after receiving the interference indication information, the TRP1 may know that the 1 st RB adopts a CSI measurement result with interference hypothesis set to 0, and the 2 nd to 5 th adopt a CSI measurement result with interference hypothesis set to 1.

Optionally, when the ue sends the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources, the ue may send the information to the serving base station and the cooperative base station simultaneously, or may send the information to the serving base station and the cooperative base station separately. If the information is sent simultaneously, the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources both comprise the overlapping information and/or the interference indication information of the downlink scheduling resources of the serving base station and the cooperative base station; if the information is transmitted separately, the transmission information of the user equipment includes overlapping information and/or interference indication information of downlink scheduling resources of the plurality of base stations, respectively.

Optionally, the ue receives configuration information of a non-zero power reference signal for channel estimation, such as a channel state information reference signal, where the configuration information is in a resource configuration domain pointed to by a link whose attribute is interference measurement. That is, the configuration information is in a time-frequency domain including configuration information for interference measurement.

Because the serving base station can select a CSI measurement result more suitable for the channel condition of data transmission from the multiple CSI measurement results by using the resource scheduling overlap information, the method specifically includes: the serving base station uses the resource scheduling overlapping information to select the most appropriate CSI measurement result for each resource group from the multiple CSI measurement results, for example, for the non-overlapping resource groups, the CSI measurement result corresponding to the interference hypothesis with data transmitted by only one base station may be selected as the most appropriate CSI measurement result.

Optionally, the user equipment determines corresponding interference indication information according to the resource scheduling overlapping condition; the user equipment reports the determined interference indication information; therefore, the serving base station may select the CSI measurement result of the interference hypothesis indicated by the interference indication information as the most appropriate CSI measurement result, and thus may select the transmission parameter according to the most appropriate CSI measurement result, which means that in this embodiment, the user equipment may send the overlapping information and/or the interference indication information of the downlink scheduling resource through an air interface, instead of the X2 interface to transmit the scheduling information, thereby helping to reduce the delay; and the base station can select the CSI measuring result which is consistent with the channel condition during data transmission as much as possible according to the information sent by the user equipment, so that the scheduling result is more accurate.

In a third aspect, an embodiment of the present invention further provides an information transmission apparatus, where the information transmission apparatus has a function of implementing the information transmission method according to the first aspect or the second aspect. The above functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above. For example, the information transmission apparatus may include a receiving module and a transmitting module.

In a fourth aspect, an embodiment of the present invention further provides an information transmission device, where the information transmission device may include a processor, a memory, and a communication interface, where the processor is connected to the communication interface and the memory, respectively; the memory is to store program instructions; the processor is used for calling the program instructions in the memory so as to enable the device to realize the information transmission method of any aspect of the embodiment of the invention.

In a fifth aspect, the embodiment of the present invention further provides a computer-readable storage medium, in which instructions are stored, and when the computer-readable storage medium runs on a computer, the information transmission method according to any one of the above aspects can be executed.

In a sixth aspect, an embodiment of the present invention further provides a computer program product, where instructions in the computer program product, when executed by a processor, may implement the information transmission method provided in any one of the first aspect or the second aspect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings required to be used in the embodiments or the background art of the present invention will be described below.

Fig. 1 is a scene diagram of cooperative transmission provided in an embodiment of the present invention;

fig. 2 is a flowchart illustrating an information transmission method according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a downlink scheduling resource overlapping situation according to an embodiment of the present invention;

fig. 4 is a schematic diagram of another downlink scheduling resource overlapping situation according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention;

FIG. 6 is a first schematic diagram of an apparatus provided in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a terminal device provided in the present application;

FIG. 8 is a second schematic diagram of an apparatus provided by an embodiment of the present application;

fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 10 is a flowchart illustrating another information transmission method according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described below with reference to the drawings.

It should be understood that the technical solution of the present application can be specifically applied to various communication systems, for example: the technical solution of The present application may also be used in future networks, such as a Fifth Generation Mobile Communication Technology (5G) System, and may also be called a New antenna (New rad, NR) System, an end-to-end (device to Mobile Communication) System, a 85mobile Communication (85d 2, 852, 3583) machine to machine (M) System, and so on, along with The continuous development of Communication technologies.

The communication involved in the embodiments of the present invention may be between a base station and a terminal, or between a base station and a base station, such as between a macro base station and a small base station, or between a terminal and a terminal, such as in a D2D network. The embodiment of the application takes communication between a base station and user equipment as an example. The user equipment may refer to a wireless terminal or a wired terminal. The wireless terminal may refer to a device that provides voice and/or data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem that may communicate with one or more core networks via a Radio Access Network (RAN). For example, the user equipment may be a mobile terminal, such as a mobile phone (or referred to as a "cellular" phone) and a computer having a mobile terminal, and may also be a portable, pocket, hand-held, computer-embedded, or vehicle-mounted mobile device, such as a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and the like, which exchange language and/or data with a radio access network. Optionally, the User equipment may also be referred to as a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), a Subscriber Unit (SU), a Subscriber Station (SS), a Mobile Station (MB), a Remote Station (Remote Station, RS), an Access Point (Access Point, AP), a Remote Terminal (Remote Terminal, RT), an Access Terminal (AT), a User Terminal (User Terminal, UT), a User Agent (UA), a Terminal equipment (User Device, UD), and the like, which are not limited in this application.

In this application, the network device may include a base station, a Transmission Reception Point (TRP), or a Radio frequency Unit, such as a Remote Radio Unit (RRU). A base station may refer to a device in an access network that communicates over the air-interface, through one or more sectors, with terminals and that may coordinate management of attributes for the air-interface. For example, the base station may be a base transceiver station in GSM or CDMA, such as a Base Transceiver Station (BTS), a base station in WCDMA, such as a NodeB, an evolved Node b in LTE, such as an eNB or an e-NodeB (evolved Node b), a base station in a 5G system, or a base station in a future network, and the like, and the present application is not limited thereto. Optionally, the base station may also be a relay device, or other network element devices with a function of a base station.

Referring to fig. 1, an application scenario of the present application is introduced below, where fig. 1 is a schematic diagram of a cooperative transmission scenario according to an embodiment of the present invention. As shown in fig. 1, the scenario takes a serving base station and a cooperative base station as an example, and the serving base station performs the information transmission method as an example for explanation. The service base station and the cooperative base station jointly transmit data to the user equipment, so that the network capacity can be improved. Fig. 1 illustrates an example that the cooperative transmission includes two base stations, but is not limited to two, that is, the cooperative base station may include a plurality of base stations. The serving base station is a base station that establishes Radio Resource Control (RRC) connection with the ue, that is, the ue is accessed, and the cooperative base station is a base station of a non-serving base station that serves the ue in a cooperative mode.

In the application scenario shown in fig. 1, an embodiment of the present invention provides an information transmission method, which may send overlapping information and/or interference indication information of downlink scheduling resources through a user equipment, that is, an air interface, to avoid situations of too large time delay or limitation in a process of exchanging scheduling information between a serving base station and a cooperative base station, and avoid selection of a CSI measurement result that is not matched with a channel during data transmission caused by the situations, or schedule downlink resources/transmit downlink data based on a CSI measurement result that has a larger difference from a channel condition during data transmission.

The information transmission method is exemplified by a cooperative transmission scenario, but is not limited to the cooperative transmission scenario.

In the scenario of fig. 1, in order to configure downlink scheduling resources, transmission parameters, and the like that are more matched with channel conditions during data transmission for the user equipment, the serving base station or the cooperative base station may use a pre-scheduling manner and help determine the transmission parameters during data transmission through CSI measurement results. In the CSI measurement phase, the serving base station may configure CSI measurement resources corresponding to multiple interference hypotheses. The interference assumption refers to an assumed situation that the base station assumes that other base stations or other user equipment generate certain interference to the user equipment when receiving data or pilot frequency for the user equipment, that is, the interference situation assumed by the base station, and the base station may make multiple interference assumptions, and since CSI measurement resources corresponding to different assumed interference situations are different, the base station may issue resource configuration information corresponding to the multiple interference assumptions. In order to better master the channel condition during data transmission, the serving base station needs to configure CSI measurement resources under various assumed conditions, so that after receiving the CSI measurement resources configured by the serving base station, the user equipment can measure CSI measurement results under various interference assumptions and feed back the CSI measurement results to the serving base station; optionally, the cooperative base station may also obtain multiple CSI measurement results fed back by the UE, for example, by using a fast CSI feedback method.

How to select the CSI measurement result more suitable for the channel condition when the base station transmits data from the CSI measurement results corresponding to the interference hypotheses under such various conditions needs to determine the downlink scheduling resources, transmission parameters, and the like during real data transmission by using the information obtained by the information transmission method according to the embodiment of the present invention.

Specifically, in the pre-scheduling stage, the serving base station and the cooperative base station may perform pre-scheduling according to a plurality of CSI measurement results fed back by the user equipment, that is, the serving base station predicts downlink resources most suitable for scheduling at the data transmission time. The multiple CSI measurement results respectively correspond to multiple interference hypotheses, and the serving base station may obtain a pre-scheduling result by processing the multiple CSI measurement results, for example, performing an average operation or a maximum and minimum operation on the multiple CSI measurement results; and the cooperative base station predicts the downlink resource which is most suitable for scheduling at the data transmission time. Or, the serving base station may perform pre-scheduling according to a CSI measurement result based on single cell measurement fed back by the user equipment, where the CSI measurement result based on single cell measurement may be 1 CSI measurement result. The cooperative base station may also perform pre-scheduling according to a CSI measurement result based on single cell measurement fed back by the user equipment, where the CSI measurement result based on single cell measurement may be 1 CSI measurement result. (ii) a Therefore, the serving base station and the cooperative base station may respectively send the scheduling information of the downlink resource to the user equipment, and optionally, the user equipment may also be notified of the information of the downlink scheduling resource of the serving base station and the cooperative base station through a high-level signaling.

Since the ue can receive the information of the downlink scheduling resources of the serving base station and the cooperative base station, the ue can send the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources based on the information of the downlink scheduling resources, so as to avoid that the difference between the selected CSI measurement result and the channel condition during data transmission is large due to transmission of the scheduling result through the X2 port. And the overlapping information of the downlink scheduling resources is fed back through the air interface, so that time delay can be saved compared with information interaction of an X2 interface. Specifically, the information transmission method according to the embodiment of the present invention is described by the following embodiments or implementation manners.

Referring to fig. 2, fig. 2 is a schematic flow chart of an information transmission method according to an embodiment of the present invention, and as shown in fig. 2, the information transmission method may include the following steps:

s201, receiving scheduling information of downlink resources by user equipment, wherein the scheduling information of the downlink resources comprises information of the downlink scheduling resources of at least two base stations;

s202, the user equipment sends the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources.

Wherein, the overlapping information is used for indicating the overlapping condition of the downlink scheduling resources configured by the at least two base stations for the user equipment, and the overlapping information is based on the information of the downlink scheduling resources; the interference indication information is used for indicating an interference hypothesis corresponding to the downlink scheduling resource configured by the at least two base stations for the user equipment, and the interference indication information is based on the information of the downlink scheduling resource.

The scheduling information of the downlink resource received by the user equipment may be information of the downlink scheduling resource received by the user equipment from at least two base stations. The information about the overlap of the downlink scheduling resources sent by the ue may be the overlap of the downlink scheduling resources of multiple base stations in the time-frequency domain.

Correspondingly, referring to fig. 10, fig. 10 is a schematic flow chart of another information transmission method according to an embodiment of the present invention, and as shown in fig. 10, the information transmission method may include the following steps:

s1001, sending scheduling information of downlink resources to user equipment by network equipment, wherein the scheduling information of the downlink resources comprises information of the downlink scheduling resources of at least two sites;

s1002, a network device receives overlapping information of the downlink scheduling resources and/or interference indication information of the downlink scheduling resources from the user equipment;

wherein, the overlapping information is used for indicating the overlapping condition of the downlink scheduling resources configured for the user equipment by the at least two stations, and the overlapping information is based on the information of the downlink scheduling resources; the interference indication information is used for indicating an interference hypothesis corresponding to the downlink scheduling resource configured by the at least two stations for the user equipment, and the interference indication information is based on the information of the downlink scheduling resource.

Since the overlap information is used to indicate the overlap condition of the downlink scheduling resources configured by at least two base stations for the user equipment, the overlap information may also be resource grouping information, that is, overlapping part of resource grouping information in the downlink scheduling resources, or non-overlapping part of resource grouping information, or overlapping information indicating the overlap condition on a predefined resource grouping, or overlapping parts of different numbers of base stations are different resource grouping information (for example, overlapping parts of resources of 2 base stations and overlapping parts of resources of 3 base stations are different resource groupings).

As an optional implementation manner, the ue sends overlapping information of downlink scheduling resources; that is, the information transmitted by the user equipment is the overlapping situation of the downlink scheduling resources, for example, the downlink scheduling resources of at least two base stations do not overlap, the downlink scheduling resources configured by two base stations overlap, the downlink scheduling resources configured by multiple base stations overlap, or the downlink scheduling resources configured by all base stations overlap. In this way, when receiving the overlapping information, each base station may determine, based on the overlapping information, an interference hypothesis corresponding to each portion in the downlink scheduling resource, and further may determine CSI measurement results corresponding to each portion in the downlink scheduling resource.

Because the serving base station can select the CSI measurement result more matched with the channel condition of data transmission from the multiple CSI measurement results by using the resource scheduling overlap information, the method specifically includes: the serving base station uses the resource scheduling overlapping information to select the most appropriate CSI measurement result for each resource group from the multiple CSI measurement results, for example, for the non-overlapping resource groups, the CSI measurement result corresponding to the interference hypothesis with data transmitted by only one base station may be selected as the most appropriate CSI measurement result.

As another optional implementation, the ue sends interference indication information of downlink scheduling resources; that is, the information sent by the user equipment is the interference hypothesis corresponding to the downlink scheduling resource, so that when each base station receives the interference hypothesis corresponding to the downlink scheduling resource, the CSI measurement result corresponding to the downlink scheduling resource can be directly determined. Wherein, the interference hypothesis is at least one, and the corresponding CSI measurement result is also at least one.

As another alternative embodiment, the user equipment sends the overlapping information of the downlink scheduling resources and the interference indication information, that is, the information sent by the user equipment includes interference hypotheses corresponding to respective overlapping situations of the downlink scheduling resources, so that each base station may also determine the interference hypotheses corresponding to the downlink scheduling resources according to the information, and similarly, the interference hypotheses are at least one but are not limited to one.

Determining corresponding interference indication information according to the resource scheduling overlapping condition by the user equipment; and the user equipment reports the determined interference indication information. Or the user equipment reports the interference indication information according to the CSI measurement result or the scheduling information of the downlink resource and other information. (ii) a Accordingly, the serving base station may select the CSI measurement result corresponding to the interference hypothesis indicated by the interference indication information as the most appropriate CSI measurement result.

In addition, in the above three embodiments, the overlapping information and/or the interference indication information of the downlink scheduling resource sent by the ue may be received by all base stations in cooperative transmission, or may be received by only one base station in cooperative transmission, where the receiving means can demodulate the information sent by the ue. When the information sent by the user equipment can be received by all base stations in cooperative transmission, the overlapping information and/or the interference indication information of the downlink scheduling resources may include the overlapping information and/or the interference indication information of the downlink scheduling resources of all base stations; when the information sent by the ue can be received by one base station in cooperative transmission, the overlapping information and/or the interference indication information of the downlink scheduling resource may only include the overlapping information and/or the interference indication information of the downlink scheduling resource of the base station, or may include the overlapping information and/or the interference indication information of the downlink scheduling resources of all the base stations.

In the embodiment of the invention, the information of the downlink scheduling resources can be carried in the physical layer signaling and can also be carried in the high layer signaling.

When the Information of the Downlink scheduling resource is carried in the physical layer signaling, the physical layer signaling may adopt three optional Downlink Control Information (DCI) formats. That is, the user equipment may obtain the information of the downlink scheduling resource of each base station through the DCI signaling configured by each base station. Wherein, the three selectable DCI formats may be a first DCI format, a second DCI format, and a third DCI format, respectively; the first DCI format may only include a resource block indication field or only include the resource block indication field and other fields, where the other fields are also used to indicate a resource condition of downlink scheduling resources; the second DCI format may include fields other than those included in the first DCI format, e.g., fields for demodulating data, etc.; the third DCI format is a general DCI format, that is, includes not only a resource block indication field but also a field for demodulating data; wherein the size Payload size of the Payload of the first DCI format is smaller than the size Payload size of the Payload of the third DCI format, and the size Payload size of the Payload of the second DCI format is smaller than the size Payload size of the Payload of the third DCI format. The first DCI format and the second DCI format may be obtained by splitting the third DCI format, and all fields included in the first DCI format and the second DCI format are combined to form a field included in the third DCI format. Or the sum of the payload size of the first DCI format and the payload size of the second DCI format is not equal to the payload size of the third DCI format, e.g., both include more fields than the third DCI format.

Therefore, as an optional implementation manner, the ue receives scheduling information of downlink resources, and may receive, for the ue, a DCI signaling of a first DCI format configured for each base station, where the DCI signaling includes only a resource block indication field or the resource block indication field and other fields used for indicating resource scheduling conditions of cooperative base stations, and these fields are all used for indicating resource information used for resource scheduling; correspondingly, the user equipment may further receive DCI signaling of the second DCI format configured by each base station, where the DCI signaling includes fields for demodulating data.

As another optional implementation, the receiving, by the user equipment, the scheduling information of the downlink resource may be: the user equipment receives DCI signaling of a third DCI format configured by each base station, wherein a resource block indication field included in the DCI signaling is used for indicating information of downlink scheduling resources; correspondingly, before each base station transmits downlink data, the user equipment may further receive DCI signaling of the third DCI format configured by each base station again, where the DCI signaling includes each field for demodulating data.

When the information of the downlink scheduling resource is carried in the higher layer signaling, the information of the downlink scheduling resource may include time-frequency domain information of a reference signal used for downlink channel estimation. The user equipment can determine the downlink resource scheduled by the base station by using the time-frequency domain information. For example, the CSI-RS configured by the higher layer signaling is sent over the full bandwidth, the ue may determine that the downlink resource scheduled by the base station includes all subbands in the downlink bandwidth; the higher-layer configured CSI-RS is transmitted on the first subband, and the user equipment may determine that the downlink resource scheduled by the base station includes the first subband in the downlink bandwidth.

As an optional implementation manner, the overlap information of the downlink scheduling resources sent by the user equipment includes a scheduling Resource overlap indication corresponding to a Resource packet in a downlink bandwidth, where the scheduling Resource overlap indication is information for indicating overlap or information for indicating non-overlap, and the Resource packet may use a Resource Block (RB), a Resource Block Group (RBG), or a frequency band as a granularity. The frequency band is a frequency band with a bandwidth smaller than a full bandwidth, such as a sub-band (subband), a band width part (band width part), a PRB set (PRB bundling), a partial band (partial band), a reporting band (reporting band), and the like.

The resource groups may be divided in a fixed granularity, that is, the size of each resource group is a fixed value, or the sizes of the resources included in the resource groups are the same. For example, the predefined resource packets of the base station and the user equipment are divided in units of RBs, RBGs, or frequency bands, the overlap information may be a scheduling resource overlap indication corresponding to each resource packet, and the scheduling resource overlap indication may be used to indicate that the resource packets overlap or do not overlap, or may indicate that downlink scheduling resources of several base stations overlap on the resource packets. For example, each resource group includes one RB, and if the resource group corresponds to 0, it indicates that the resource groups are not overlapped, and if the resource group corresponds to 1, it indicates that the resource groups are overlapped, and the user equipment may feed back a Bitmap mode to indicate the overlapping information of the scheduled resources, for example, the user equipment feeds back 0010 to the base station, and the base station may know that the third resource group, or the third RB is an RB simultaneously scheduled by multiple base stations, that is, an overlapped RB, and then the base station may select, for the third RB of the downlink scheduled resources, a CSI measurement result corresponding to an interference hypothesis where interference of other base stations exists; the first, second and fourth resource groups, or the first, second and fourth RBs only have the base station scheduling, so that the CSI measurement result under the assumption that only the base station transmits data and is not interfered by other base stations can be selected for the first, second and fourth resource groups, and on other RBs, the base station selects the CSI measurement result corresponding to the assumption that the interference of other base stations does not exist.

In addition, the resource packets may also be divided into resource packet granularities, such as frequency bands, specified by the protocol, and each resource packet may include one frequency band, for example, the downlink full bandwidth may be divided into several frequency bands predefined by the protocol, such as the size of each frequency band is specified by the protocol, which determines that the bandwidth may be divided into several frequency bands according to the downlink system bandwidth, such as 6 frequency band blocks per 20M full bandwidth, and each frequency band block is the frequency band. The user equipment may transmit the resource overlap information corresponding to each of the 6 frequency bands at the granularity of the frequency bands. The resource grouping of the downlink bandwidth corresponds to different grouping sizes, and the length of the overlapping information or the interference indication information transmitted by the user equipment is also different, for example, the bit number of the overlapping information or the interference indication information transmitted on each frequency band or resource block is the same, and the full bandwidth can be grouped into 6 frequency band blocks or 100 RBs, so the bit length for transmitting the overlapping information or the interference indication information with the frequency band granularity is smaller than the bit length for transmitting the overlapping information or the interference indication information with the resource block RB granularity.

The information of the resource grouping may comprise a resource demarcation indication or a resource proportion indication or a resource boundary indication or a resource grouping index. Wherein the resource demarcation indicates information indicative of a resource demarcation for different overlapping conditions; the resource proportion indicates information indicating resource proportions for different overlapping situations; the resource boundary indicates starting position information and ending position information of resources for indicating different overlapping conditions; the resource grouping index is used for indicating the number of the resource grouping, and the size of the resource grouping is fixed.

For example, the user equipment sends a resource demarcation indication and a scheduling resource overlapping indication corresponding to different resource blocks corresponding to the resource demarcation indication, fig. 3 is a schematic diagram of a downlink scheduling resource overlapping situation provided in the embodiment of the present invention, and as shown in fig. 3, assuming that resources scheduled by the TRP1 include 1 st to 5 th RBs and resources scheduled by the TRP2 include 2 nd to 8 th RBs, overlapping information of downlink scheduling resources sent by the user equipment to the TRP1 includes that the resource demarcation indication is 2 and the scheduling resource overlapping indication is 01, where 0 indicates that there is no interference caused by other base stations and 1 indicates that there is interference caused by other base stations; when the TRP1 receives the overlapping information of the downlink scheduling resource, it can be known that resource blocks smaller than 2 in the downlink resource scheduled by the TRP1 are not scheduled by multiple base stations, that is, are not overlapped, and have no interference from other base stations; resource blocks greater than or equal to 2 are scheduled by a plurality of base stations, i.e. there is overlap and interference from other base stations. Optionally, the overlapping information of the downlink scheduling resources that the user equipment may send to the TRP2 includes a resource division indication of 5, and a scheduling resource overlapping indication of 10, where the TRP2 receives the overlapping information of the downlink scheduling resources, and it is known that a resource block smaller than 5 in the downlink resources scheduled by the TRP2, that is, a resource block corresponding to 2 nd to 5 th RBs is scheduled by multiple base stations, that is, there is an overlap, and there is interference from other base stations; resource blocks larger than 5, namely resource blocks corresponding to 5 th to 8 th RBs are not scheduled by a plurality of base stations, namely are not overlapped, and the interference of other base stations does not exist.

For another example, in step S202, the overlapping information of the downlink scheduling resources sent by the user equipment includes a resource ratio indication and a scheduling resource overlapping indication, and as also shown in fig. 3, assuming that the resources scheduled by the TRP1 include 1 st to 5 th RBs and the resources scheduled by the TRP2 include 2 nd to 8 th RBs, the overlapping information of the downlink scheduling resources sent by the user equipment to the TRP1 includes a resource ratio indication of 1/5 and a scheduling resource overlapping indication of 01, the TRP1 receives the overlapping information of the downlink scheduling resources to know that the resource block of the first 1/5 in the downlink resources scheduled by the TRP1, that is, the 1 st RB is not scheduled by multiple base stations, that is, there is no overlapping, and there is no interference from other base stations; the resource blocks of the last 4/5, i.e., the 2 nd to 5 th RBs, are scheduled by multiple base stations, i.e., overlap, with interference from other base stations. Optionally, the overlapping information of the downlink scheduling resources that the user equipment may send to the TRP2 includes a resource proportion indication of 4/7, and a scheduling resource overlapping indication of 10, where the TRP2 receives the overlapping information of the downlink scheduling resources, and it is known that the resource block of the front 4/7 in the downlink resources scheduled by the TRP2, that is, the resource block corresponding to the 2 nd to 5 th RBs, is scheduled by multiple base stations, that is, there is an overlap, and there is interference from other base stations; the resource block of the last 3/7, i.e. the resource blocks corresponding to the 5 th to 8 th RBs, are not scheduled by a plurality of base stations, i.e. do not overlap, and there is no interference from other base stations.

For another example, in step S202, the overlapping information of the downlink scheduling resources sent by the ue includes a resource boundary indication and a scheduling resource overlapping indication, please refer to fig. 4, fig. 4 is a schematic diagram of another overlapping situation of downlink scheduling resources according to an embodiment of the present invention, where RBs filled with gray in fig. 4 are resources scheduled by each base station, that is, the TRP1 scheduled resources include 1 st to 4 th RBs and 6 th to 8 th RBs, the TRP2 scheduled resources include 3 rd to 9 th RBs, the overlapping information of the downlink scheduled resource transmitted by the user equipment to the TRP1 includes a resource boundary indication (1: 2) (3: 4) (6: 8), a scheduled resource overlapping indication 011, the TRP1 receives the overlapping information of the downlink scheduling resource, and it is known that the resource blocks of 1 st to 2 nd RBs in the downlink resource scheduled by the TRP1 are not scheduled by multiple base stations, i.e. are not overlapped, and there is no interference from other base stations; resource blocks of 3-4 th and 6-8 th RBs are scheduled by a plurality of base stations, i.e. overlap, and there is interference from other base stations. Optionally, the overlapping information of the downlink scheduling resources sent by the user equipment to the TRP2 includes a resource boundary indication (3: 4) (5: 5) (6: 8) (9: 9), and the scheduling resource overlapping indication 1010, so that the TRP2 receives the overlapping information of the downlink scheduling resources to know that resource blocks of 3 th to 4 th RBs and 6 th to 8 th RBs in the downlink resources scheduled by the TRP2 are scheduled by multiple base stations, that is, there is an overlap and there is interference from other base stations; the resource block of the 5 th RB is not scheduled by multiple base stations, i.e., does not overlap, and does not interfere with other base stations.

As another optional implementation manner, in step S202, the overlapping information of the downlink scheduling resources sent by the user equipment may include information for indicating resources in an overlapping portion of the resources, or information for indicating resources in a non-overlapping portion of the resources. That is, the base station and the user equipment may set information indicating only the resource of the overlapping portion of the resources or information of the resource of the non-overlapping portion of the resources in a predefined manner.

Wherein the information for indicating the resource of the resource overlapping portion may be a resource boundary indication or a resource grouping index. The resource boundary indicates start position information and end position information for indicating overlapped resources; the resource packet index is used to indicate the number of the resource packet, wherein the size of the resource packet is fixed.

For example, the resource boundary indicates start position information and end position information indicating overlapping resources. As shown in fig. 3, assuming that the resources scheduled by the TRP1 include 1 st to 5 th RBs and the resources scheduled by the TRP2 include 2 nd to 8 th RBs, the resource boundary indications included in the overlapping information of the downlink scheduling resources transmitted by the user equipment to the TRP1 are 2 and 5; thus, when the TRP1 receives the overlapping information of the downlink scheduling resources, it can be known that the resource of the resource overlapping part in the downlink resource scheduled by the TRP1 is the 2 nd to 5 th RB; for another example, the overlapping information of the downlink scheduling resources transmitted by the user equipment to the TRP1 includes the

numbers

2, 3, 4, and 5 of the resource packets, so that when the TRP1 receives the overlapping information of the downlink scheduling resources, it can be known that the resource of the overlapping part of the resources in the downlink resources scheduled by the TRP1 is the 2 nd to 5 th RB. Similarly, the overlapping information of the downlink scheduling resources may also be sent to the TRP2, and when the TPR2 receives the resource boundary indication, it may also determine that the resource of the resource overlapping portion in the downlink resources is the 2 nd to 5 th RBs. Wherein the resource boundary indication may indicate start position information and end position information of the overlapped discontinuous resources. For example, assuming that the resources scheduled by the TRP1 include 1 st to 4 th RBs and 6 th to 8 th RBs, i.e. discontinuous resources, and the resources scheduled by the TRP2 include 2 nd to 8 th RBs, the overlapping information of the downlink scheduling resources transmitted by the user equipment to the TRP1 includes resource boundary indications of (2; 4) and (6; 8); thus, when the TRP1 receives the overlap information of the downlink scheduling resources, it can be seen that the resources of the resource overlap portion of the downlink resources scheduled by the TRP1 are the 2 nd to 4 th RBs and the 6 th to 8 th RBs. Optionally, the number of the resource packet included in the resource packet index may also be discontinuous to indicate the overlapping multiple resource blocks.

The information of the resource in the non-overlapping resource portion may also be indicated by a resource boundary indication or a resource grouping index, and the manner of indicating the information of the resource in the overlapping resource portion is the same, and is not described in detail here.

In this embodiment of the present invention, in step S202, the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources may be carried in an uplink data channel or an uplink control channel.

When the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources are carried in an uplink data channel, the overlapping information of the scheduling resources and/or the interference indication information of the scheduling resources are carried in a preset resource region of the uplink data channel, or are carried in part of data in a punched uplink data channel during resource mapping, or are jointly coded with the uplink data in the uplink data channel.

For example, the overlapping information of the downlink scheduling resource and/or the interference indication information of the downlink scheduling resource are carried in a preset resource region of a Physical Uplink Shared Channel (PUSCH). For example, the base station may configure an interference hypothesis indication field ifHypothindicator and/or a resource overlap indication field ResourceAllocatiindicator to respectively indicate whether the UE needs to carry interference indication information of downlink scheduling resources and/or overlap information of the downlink scheduling resources. If the base station configures the signaling, a reporting region corresponding to the maximum reporting information is allocated on the PUSCH. For example, the uplink scheduling resource corresponding to the interference indication information may have 4 bits, and the uplink scheduling resource required by the overlap information is a reported content size related to the packet number of the resource packet.

For another example, the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources carry part of data in the uplink data channel when the resources are mapped. That is, the ue may puncture the PUSCH, for example, puncture the next symbol of Demodulation Reference Signal (DMRS), ACK/NACK, and RI, and puncture these data with the interference indication information of the downlink scheduling resource and/or the overlapping information of the downlink scheduling resource.

For another example, the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources are jointly encoded with the uplink data in the uplink data channel. For example, the user equipment may be coded and mapped to a Channel Quality Indicator (CQI) region together with a CQI in an uplink data Channel.

When the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources are carried in a Physical Uplink Control Channel (PUCCH), the overlapping information of the scheduling resources and/or the interference indication information of the scheduling resources have a configured period and offset; or has the same period and offset as another information in the uplink control channel; or jointly encoded with uplink control information in the uplink control channel.

For example, the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources have configured periods and offsets, that is, the base station configures reported periods and offsets for the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources, and the user equipment sends the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources by using the reported periods and offsets.

For another example, the overlapping information of the downlink scheduling resource and/or the interference indication information of the downlink scheduling resource has the same period and offset as another information in the uplink control channel. Another information may be a CSI-RS resource Indicator (CRI), that is, the user equipment transmits overlapping information of the downlink scheduling resource and/or interference indication information of the downlink scheduling resource by using a reporting period and an offset of the CRI.

For another example, the overlap Information of the downlink scheduling resources and/or the interference indication Information of the downlink scheduling resources are jointly encoded with the Uplink Control Information in the Uplink Control channel, that is, the ue jointly encodes the overlap Information of the downlink scheduling resources and/or the interference indication Information of the downlink scheduling resources and the Uplink Control Information (UCI), and then maps the jointly encoded Information and/or Information to the UCI area.

In the embodiment of the present invention, the interference indication information of the downlink scheduling resource includes an interference indication of a resource group included in the scheduling resource or a difference value of the interference indication of the included resource group, and the resource group takes a resource block RB, a resource block group RBG, or a frequency band as a granularity.

The resource grouping may be divided at a fixed granularity or at an unfixed granularity. If the division is performed with a fixed granularity, the ue may send an interference indication corresponding to each resource packet or a difference between the interference indications. For example, assuming that the resources scheduled by the TRP1 include 1 st to 5 th RBs, and the resources scheduled by the TRP2 include 2 nd to 8 th RBs, the interference indication corresponding to each resource grouping RB sent by the user equipment may be 01111000, so that when receiving the interference indication information, the TRP1 may know that the CSI measurement result corresponding to the interference hypothesis 1 is selected for the 2 nd to 5 th RBs, and the CSI measurement result corresponding to the interference hypothesis 0 is selected for the 1 st RB. Alternatively, the difference of the interference indications corresponding to each resource grouping RB transmitted by the user equipment may be 01111001, and the interference indication is 01111000. The interference indication may determine the number of bits required for the interference indication or the interference indication difference corresponding to each resource grouping according to the number of interference hypotheses.

For another example, the fixed resource packet is divided by using a frequency band as a granularity, the downlink full bandwidth may be predefined by a protocol as being divided into several frequency bands, for example, every 20M full bandwidth is divided into 6 frequency band blocks, and each frequency band block is a frequency band, and then the user equipment may send the interference indication information corresponding to each frequency band in the 6 frequency bands by using the frequency band as the granularity. Suppose that the interference indication corresponding to each resource grouping frequency band sent by the user equipment is 011100, so that the base station can determine the CSI measurement result of the interference hypothesis corresponding to the 2 nd to 4 th band selection interference indication 1 and the CSI measurement result of the interference hypothesis corresponding to the 1 st and 5 th to 6 th band selection interference indications 0 when receiving the interference indication.

It can be seen that, when the sizes of the resource packets dividing the downlink bandwidth by the fixed granularity are different, the lengths of the overlapping information or the interference indication information sent by the user equipment are also different. For example, the number of bits of the overlap information or the interference indication information transmitted in each frequency band or resource block is the same, and the full bandwidth may be grouped into 6 frequency band blocks or 100 RBs, so the bit length for transmitting the overlap information or the interference indication information with the frequency band as the granularity is smaller than the bit length for transmitting the overlap information or the interference indication information with the resource block RB as the granularity.

If the resource grouping is divided in a non-fixed granularity, the interference indication information further needs to include information of the resource grouping corresponding to the interference hypothesis indication.

Optionally, the information of the resource grouping may include: a resource demarcation indication or a resource proportion indication or a resource boundary indication or a resource grouping index. Wherein the resource demarcation indicates information indicative of a resource demarcation for different overlapping conditions; the resource proportion indicates information indicating resource proportions for different overlapping situations; the resource boundary indicates starting position information and ending position information of resources for indicating different overlapping conditions; the resource grouping index is used for indicating the number of the resource grouping, and the size of the resource grouping is fixed. For example, assuming that the resources scheduled by the TRP1 include 1 st to 5 th RBs, and the resources scheduled by the TRP2 include 2 nd to 8 th RBs, the interference indication information corresponding to each resource grouping RB sent by the user equipment includes information of the resource grouping and interference indication information of the resource grouping, and the information of the resource grouping may be a resource boundary indication (2; 5), that is, the 1 st RB is a group, and the 2 nd to 5 th RBs are a group, the interference indication information of the two resource groupings is 01, so that after receiving the interference indication information, the TRP1 may know that the 1 st RB adopts a CSI measurement result with interference hypothesis of 0, and the 2 nd to 5 th adopt a CSI measurement result with interference hypothesis of 1. Or, on different resource groups indicated by the information of the resource groups, the user equipment may send an interference indication difference value corresponding to each resource group, i.e. 10, and then the TRP1 may know that the interference indication is 01, i.e. the 1 st RB adopts a CSI measurement result with interference hypothesis of 0, and the 2 nd to 5 nd adopt a CSI measurement result with interference hypothesis of 1.

For example, the interference indication information sent by the user equipment includes a resource demarcation indication and an interference indication, fig. 3 is a schematic diagram of a downlink scheduling resource overlapping situation provided by the embodiment of the present invention, and as shown in fig. 3, assuming that the resource scheduled by the TRP1 includes 1 st to 5 th RBs and the resource scheduled by the TRP2 includes 2 nd to 8 th RBs, the interference indication information of the downlink scheduling resource sent by the user equipment to the TRP1 includes a resource demarcation indication of 2 and an interference indication of 01; when the TRP1 receives the interference indication information of the downlink scheduling resource, it is known that the interference assumption of the resource block smaller than 2 in the downlink resource scheduled by the TRP1 is the interference assumption corresponding to the interference indication 0; the interference hypothesis of the resource block greater than or equal to 2 is the interference hypothesis corresponding to the interference indication 1. Optionally, the interference indication information of the downlink scheduling resource, which may be sent by the user equipment to the TRP2, includes that the resource partition indication is 5, and the interference indication is 10, then the TRP2 receives the interference indication information of the downlink scheduling resource, and it is known that the interference assumption of the resource block greater than 5 in the downlink resource scheduled by the TRP2 is the interference assumption of the interference indication 1; the interference hypothesis for resource blocks greater than 5 is the interference hypothesis with the interference indication 0.

For another example, in step S202, the interference indication information of the downlink scheduling resource sent by the user equipment includes a resource ratio indication and an interference indication, and as also shown in fig. 3, assuming that the resource scheduled by the TRP1 includes 1 st to 5 th RBs and the resource scheduled by the TRP2 includes 2 nd to 8 th RBs, the interference indication information of the downlink scheduling resource sent by the user equipment to the TRP1 includes a resource ratio indication 1/5 and the interference indication 01, the TRP1 receives the interference indication information of the downlink scheduling resource, and the interference assumption of the front 1/5 resource block in the downlink resource scheduled by the TRP1 is an interference assumption corresponding to the interference indication 0; the interference hypothesis of the resource block at postcursor 4/5 is the interference hypothesis corresponding to interference indication 1. Optionally, the interference indication information of the downlink scheduling resource, which may be sent by the user equipment to the TRP2, includes that the resource proportion indication is 4/7, and the interference indication is 10, then the TRP2 receives the interference indication information of the downlink scheduling resource, and it is known that the interference assumption of the front 4/7 resource block in the downlink resource scheduled by the TRP2 is the interference assumption corresponding to the interference indication 1; the interference hypothesis of the resource block at the rear 3/7 is the interference hypothesis corresponding to the interference indication 0.

The interference hypothesis corresponding to the interference indication may be set in a manner predefined by a protocol or a system, and the interference hypotheses corresponding to the same interference indication at different base stations may be different, for example, the interference hypothesis corresponding to interference indication 1 of TRP1 is: TRP1 is the channel and TRP2 is the interference; interference indication 1 of TRP2 corresponds to an interference hypothesis: TRP2 is the channel and TRP1 is the interference. Optionally, the number of bits corresponding to the interference indication is determined according to the type of the interference hypothesis, for example, if there are two interference hypotheses, the two interference hypotheses may be indicated by using an interference indication with 1 bit; if there are four interference hypotheses, the four interference hypotheses may be indicated with a 2-bit interference indication.

For another example, in step S202, the interference indication information of the downlink scheduling resource sent by the ue includes a resource boundary indication and an interference indication, please refer to fig. 4, fig. 4 is a schematic diagram of another overlapping situation of downlink scheduling resources according to an embodiment of the present invention, where RBs filled with gray in fig. 4 are resources scheduled by each base station, that is, the TRP1 scheduled resources include 1 st to 4 th RBs and 6 th to 8 th RBs, the TRP2 scheduled resources include 3 rd to 9 th RBs, the interference indication information of the downlink scheduled resource transmitted by the user equipment to the TRP1 includes resource boundary indication (1: 2) (3: 4) (6: 8), interference indication 011, then the TRP1 receives the interference indication information of the downlink scheduling resource, and the interference assumption of the resource block of the 1 st to 2 nd RB in the downlink resource scheduled by the TRP1 is the interference assumption corresponding to the interference indication 0; the interference hypotheses for the resource blocks of 3-4 and 6-8 RBs are the interference hypotheses corresponding to interference indication 1. Optionally, the interference indication information of the downlink scheduling resource sent by the user equipment to the TRP2 includes resource boundary indication (3: 4) (5: 5) (6: 8) (9: 9), and the interference indication 1010, so that when the TRP2 receives the interference indication information of the downlink scheduling resource, it is known that the interference assumption of resource blocks of 3 th to 4 th RBs and 6 th to 8 th RBs in the downlink resource scheduled by the TRP2 is the interference assumption corresponding to the interference indication 1; the interference hypothesis for the resource block of the 5 th RB is the interference hypothesis corresponding to the interference indication 0. Optionally, when the ue sends the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources, the ue may send the information to the serving base station and the cooperative base station simultaneously, or may send the information to the serving base station and the cooperative base station separately. If the information is sent simultaneously, the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources both comprise the overlapping information and/or the interference indication information of the downlink scheduling resources of the serving base station and the cooperative base station; if the above information is transmitted separately, the ue may transmit to which base station, and include the overlapping information and/or the interference indication information of the downlink scheduling resource of which base station.

Optionally, in the CSI measurement phase, the ue receives configuration information of a non-zero power reference signal for channel estimation, such as a channel state information reference signal, where the configuration information is in a resource configuration domain pointed to by a link whose attribute is interference measurement. That is, the configuration information is in a time-frequency domain including configuration information for interference measurement. That is, the resource set resource setting pointed by the link with the attribute quality being the interference reference may include Non-Zero Power channel state information reference signal (Non-Zero Power CSI-RS, NZP CSI-RS) resources.

Through the various embodiments, in the data transmission phase, each base station knows the interference assumption of the downlink scheduling resource in advance, for example, TRP1 knows which part of the downlink scheduling resource has interference of TRP2 and which part has no interference of TRP2 according to the overlapping information of the downlink scheduling resource and/or the interference indication information of the downlink scheduling resource sent by the UE. Therefore, when the TRP1 selects an appropriate scheduling parameter (e.g., Modulation Coding Scheme (MCS) value), an accurate MCS may be selected on different downlink scheduling resources according to CSI measurement results corresponding to different interference hypotheses.

Therefore, by implementing the embodiment of the present invention, the user equipment can receive the information of the downlink scheduling resources of the serving base station and the cooperative base station, and the user equipment sends the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources based on the information of the downlink scheduling resources, so as to avoid that the difference between the selected CSI measurement result and the channel condition during data transmission is large due to the transmission of the scheduling result through the X2 port, thereby improving the system performance.

The method according to the embodiment of the present invention is explained in detail above, and the following provides a device or a user equipment according to the embodiment of the present invention. The apparatus or the user equipment corresponding to the embodiment of the present invention may execute the relevant processes or embodiments in the above embodiments of the present invention.

Referring to fig. 5, fig. 5 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention, where the information transmission apparatus may be disposed in a user equipment, and as shown in fig. 5, the information transmission apparatus may include the following modules:

a receiving module 501, configured to receive scheduling information of downlink resources, where the scheduling information of downlink resources includes information of downlink scheduling resources of at least two base stations;

a sending module 502, configured to send overlapping information of downlink scheduling resources and/or interference indication information of downlink scheduling resources.

The scheduling information of the downlink resource received by the receiving module 501 may be information of the downlink scheduling resource received from at least two base stations. The overlapping information of the downlink scheduling resources sent by the sending module 502 may be an overlapping situation of the downlink scheduling resources of multiple base stations in the time-frequency domain.

Optionally, the receiving module 501 is further configured to receive configuration information of a non-zero power reference signal for channel estimation, where the configuration information is in a resource configuration domain pointed to by a link whose attribute is interference measurement.

Therefore, by implementing the embodiment of the present invention, the information transmission device may receive the information of the downlink scheduling resources of the serving base station and the cooperative base station, and the information transmission device sends the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources based on the information of the downlink scheduling resources, so as to avoid transmitting the scheduling information through the X2 port, which is beneficial to reducing the time delay; and the base station can select the CSI measuring result which is consistent with the channel condition during data transmission as much as possible according to the information sent by the user equipment, so that the scheduling result is more accurate.

According to the foregoing method, fig. 6 is a first schematic diagram of a device provided in this embodiment of the present application, as shown in fig. 6, the device may be a user equipment, or may be a chip or a circuit, for example, a chip or a circuit that may be disposed in a terminal device. The user equipment may correspond to the user equipment in the above method.

The device may include a processor 110 and a memory 120. The memory 120 is used for storing instructions, and the processor 110 is used for executing the instructions stored by the memory 120 to implement the steps in the method corresponding to fig. 2 to 4.

Further, the apparatus may also include an input port 140 and an output port 150. Further, the apparatus may further comprise a bus system 130, wherein the processor 110, the memory 120, the input port 140 and the output port 150 may be connected via the bus system 130.

Processor 110 is configured to execute instructions stored in memory 120 to control input port 140 to receive signals and output port 150 to send signals to implement the steps of the terminal device of the above-described method. Wherein input port 140 and output port 150 may be the same or different physical entities. When the same physical entity, may be collectively referred to as a transceiver. The memory 220 may be integrated in the processor 210 or may be provided separately from the processor 210.

As an implementation manner, the functions of the input port 140 and the output port 150 may be implemented by a transceiver circuit or a dedicated chip for transceiving. The processor 110 may be considered to be implemented by a dedicated processing chip, processing circuit, processor, or a general-purpose chip.

As another implementation manner, a manner of using a general-purpose computer to implement the terminal device provided in the embodiment of the present application may be considered. Program code that implements the functionality of processor 110, input ports 140 and output ports 150 is stored in memory, and a general purpose processor implements the functionality of processor 110, input ports 140 and output ports 150 by executing the code in memory.

For the concepts, explanations, details and other steps related to the technical solutions provided in the embodiments of the present application related to the apparatus, please refer to the descriptions of the foregoing methods or other embodiments, which are not repeated herein.

Fig. 7 is a schematic structural diagram of a user equipment provided in the present application. The user equipment may be adapted for use in the system shown in fig. 1. For ease of illustration, fig. 7 shows only the main components of the user equipment. As shown in fig. 7, the user equipment includes a processor, a memory, a control circuit, an antenna, and an input-output device. The processor is mainly configured to process a communication protocol and communication data, control the entire terminal device, execute a software program, and process data of the software program, for example, to support the terminal device to perform the actions described in the above embodiment of the method for indicating a transmission precoding matrix. The memory is mainly used for storing software programs and data, for example, information of downlink scheduling resources in the above embodiments, or overlapping information or interference indication information of the downlink scheduling resources. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit and the antenna together, which may also be called a transceiver, are mainly used for transceiving radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.

When the user equipment is started, the processor can read the software program in the storage unit, interpret and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data.

Those skilled in the art will appreciate that fig. 7 shows only one memory and processor for ease of illustration. In an actual user equipment, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this respect in the embodiment of the present invention.

As an alternative implementation manner, the processor may include a baseband processor and a central processing unit, where the baseband processor is mainly used to process a communication protocol and communication data, and the central processing unit is mainly used to control the whole terminal device, execute a software program, and process data of the software program. The processor in fig. 7 integrates the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the user equipment may include multiple baseband processors to accommodate different network formats, multiple central processors to enhance its processing capability, and various components of the user equipment may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

For example, in the embodiment of the present invention, the antenna and the control circuit with transceiving function may be regarded as the transceiving unit 101 of the user equipment, and the processor with processing function may be regarded as the processing unit 102 of the user equipment. As shown in fig. 7, the user equipment includes a transceiving unit 101 and a processing unit 102. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. Alternatively, a device for implementing a receiving function in the transceiver unit 101 may be regarded as a receiving unit, and a device for implementing a sending function in the transceiver unit 101 may be regarded as a sending unit, that is, the transceiver unit 101 includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, and the like, and the sending unit may be referred to as a transmitter, a sending circuit, and the like.

According to the foregoing method, fig. 8 is a second schematic diagram of the device provided in the embodiment of the present application, and as shown in fig. 8, the device may be the network device 20, or may be a chip or a circuit, such as a chip or a circuit that may be disposed in the network device. The network device 20 corresponds to the network device in the above method. The device may include a processor 210 and a memory 220. The memory 220 is used for storing instructions, and the processor 210 is used for executing the instructions stored by the memory 220 to make the device implement the method corresponding to the above-mentioned fig. 2-4.

Further, the network may also include an input port 240 and an output port 250. Still further, the network may also include a bus system 230.

The processor 210, the memory 220, the input port 240 and the output port 250 are connected via the bus system 230, and the processor 210 is configured to execute instructions stored in the memory 220 to control the input port 240 to receive signals and control the output port 250 to send signals, thereby completing the steps of the network device in the above method. Wherein the input port 240 and the output port 250 may be the same or different physical entities. When they are the same physical entity, they may be collectively referred to as an input-output port. The memory 220 may be integrated in the processor 210 or may be provided separately from the processor 210.

As an implementation manner, the functions of the input port 240 and the output port 250 may be realized by a transceiver circuit or a dedicated chip for transceiving. Processor 210 may be considered to be implemented by a dedicated processing chip, processing circuit, processor, or a general-purpose chip.

As another implementation manner, a manner of using a general-purpose computer to implement the network device provided in the embodiment of the present application may be considered. Program code that implements the functions of the processor 210, the input ports 240 and the output ports 250 is stored in memory, and a general purpose processor implements the functions of the processor 210, the input ports 240 and the output ports 250 by executing the code in the memory.

According to the foregoing method, fig. 9 is a schematic structural diagram of a network device provided in this embodiment of the present application, for example, a schematic structural diagram of a base station. As shown in fig. 9, the base station can be applied to the system shown in fig. 1. The base station 20 includes one or more radio frequency units, such as a Remote Radio Unit (RRU) 201 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 202. The RRU201 may be referred to as a transceiver unit, transceiver circuit, or transceiver, etc., which may include at least one antenna 2011 and a radio unit 2012. The RRU201 is mainly used for transceiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for sending signaling messages described in the above embodiments to a terminal device. The BBU202 is mainly used for performing baseband processing, controlling a base station, and the like. The RRU201 and the BBU202 may be physically disposed together or may be physically disposed separately, that is, distributed base stations.

The BBU202 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and the like. For example, the BBU (processing unit) can be used to control the base station to execute the operation flow related to the network device in the above method embodiment.

In an example, the BBU202 may be formed by one or more boards, and the boards may support a radio access network (e.g., an LTE network) of a single access system together, or may support radio access networks of different access systems respectively. The BBU202 also includes a memory 2021 and a processor 2022. The memory 2021 is used to store the necessary instructions and data. For example, the memory 2021 stores information of the downlink scheduling resources in the above-described embodiment, or overlap information or interference indication information of the downlink scheduling resources. The processor 2022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedures related to the network device in the above method embodiments. The memory 2021 and the processor 2022 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

According to the method provided by the embodiment of the present application, an embodiment of the present application further provides a communication system, which includes the foregoing network device and one or more terminal devices.

It should be understood that in the embodiments of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory may include both read-only memory and random access memory, and provides instructions and data to the processor. The portion of memory may also include non-volatile random access memory.

The bus system may include a power bus, a control bus, a status signal bus, and the like, in addition to the data bus. For clarity of illustration, however, the various buses are labeled as a bus system in the figures.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here.

It should also be understood that reference herein to first, second, third, fourth, and various numerical designations is made merely for convenience in description and is not intended to limit the scope of embodiments of the invention.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of the processes should be determined by their functions and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps (step) described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. An information transmission method, comprising:

receiving scheduling information of downlink resources, wherein the scheduling information of the downlink resources comprises information of downlink scheduling resources of at least two sites;

transmitting overlapping information of the downlink scheduling resources and/or interference indication information of the downlink scheduling resources;

the overlapping information is used for indicating the overlapping condition of the downlink scheduling resources configured for the user equipment by the at least two stations, and the overlapping information is based on the information of the downlink scheduling resources;

the interference indication information is used for indicating an interference hypothesis corresponding to the downlink scheduling resource configured by the at least two stations for the user equipment, and the interference indication information is based on the information of the downlink scheduling resource;

the overlapping information is used for determining an interference hypothesis corresponding to the downlink scheduling resource and determining a Channel State Information (CSI) measurement result corresponding to the determined interference hypothesis; or the interference indication information is used for determining a CSI measurement result corresponding to the interference hypothesis indicated by the interference indication information; or, the overlapping information and the interference indication information are used for determining an interference hypothesis of downlink scheduling resources.

2. The method of claim 1, wherein the information of the downlink scheduling resources is carried in physical layer signaling, and wherein the physical layer signaling only includes a field for indicating the information of the downlink scheduling resources.

3. The method of claim 1, wherein the information of the downlink scheduling resources is carried in higher layer signaling.

4. The method according to any of claims 1 to 3, wherein the overlap information of the downlink scheduling resources comprises a scheduling resource overlap indication corresponding to resource packets in a downlink bandwidth, the resource packets are in Resource Block (RB), Resource Block Group (RBG) or frequency band granularity, and the scheduling resource overlap indication is information for indicating overlap or information for indicating non-overlap.

5. The method of claim 4, wherein the overlapping information of the scheduled resources further comprises information of the resource grouping, which is used for indicating information of the resource grouping corresponding to the scheduled resource overlapping indication.

6. The method of claim 5, wherein the information of the resource grouping comprises:

at least one of a resource demarcation indication, a resource proportion indication, a resource boundary indication, or a resource grouping index;

the resource boundary indicates information indicating resource boundaries for different overlapping conditions;

the resource proportion indicates information indicating resource proportions for different overlapping situations;

the resource boundary indicates starting position information and ending position information of resources for indicating different overlapping conditions;

the resource grouping index is used for indicating the number of the resource grouping, and the size of the resource grouping is fixed.

7. The method according to any of claims 1 to 3, wherein the overlapping information of the scheduled resources comprises information indicating resources of the overlapping part of the resources.

8. The method of claim 7, wherein the information for indicating the resources of the overlapping portion of the resources comprises:

at least one of a resource boundary indication or a resource grouping index;

the resource boundary indicates start position information and end position information for indicating overlapping resources;

9. The method according to any of claims 1 to 3, wherein the overlapping information of the downlink scheduling resources comprises information indicating resources with non-overlapping parts of resources.

10. The method according to any of claims 1 to 3, wherein the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources are carried in an uplink data channel or an uplink control channel.

11. The method according to any one of claims 1 to 3, wherein the overlapping information of the scheduled resources and/or the interference indication information of the scheduled resources are carried in a preset resource region of an uplink data channel, or replace partial data in the uplink data channel during resource mapping, or are jointly encoded with uplink data in the uplink data channel.

12. The method according to claim 10, wherein the overlapping information of the scheduled resources and/or the interference indication information of the scheduled resources have a configured periodicity and an offset; or has the same period and offset as another information in the uplink control channel; or jointly encoded with uplink control information in the uplink control channel.

13. The method according to any of claims 1 to 3, wherein the interference indication information comprises an interference indication of a resource grouping comprised by the scheduled resources in Resource Block (RB), Resource Block Group (RBG) or frequency band granularity or a difference value of interference indications of comprised resource groupings, and wherein the interference indication is information indicating an interference hypothesis.

14. The method of claim 13, wherein the interference indication information further comprises information of a resource grouping corresponding to the interference hypothesis indication.

15. The method of claim 14, wherein the information of the resource grouping comprises:

16. The method according to any one of claims 1 to 3, further comprising:

receiving configuration information of a non-zero power reference signal for channel estimation, the configuration information being in a resource configuration domain pointed to by a link whose attribute is interference measurement.

17. An information transmission method, comprising:

sending scheduling information of downlink resources to user equipment, wherein the scheduling information of the downlink resources comprises information of the downlink scheduling resources of at least two sites;

receiving overlapping information of the downlink scheduling resources and/or interference indication information of the downlink scheduling resources from the user equipment;

18. The method of claim 17, wherein the information of the downlink scheduling resources is carried in physical layer signaling, and wherein the physical layer signaling only includes a field for indicating the information of the downlink scheduling resources.

19. The method of claim 17, wherein the information of the downlink scheduling resources is carried in higher layer signaling.

20. The method according to any of claims 17 to 19, wherein the overlap information of the downlink scheduling resources comprises a scheduling resource overlap indication corresponding to resource packets in a downlink bandwidth, the resource packets are in resource block RB, resource block group RBG or frequency band granularity, and the scheduling resource overlap indication is information for indicating overlap or information for indicating non-overlap.

21. The method of claim 20, wherein the overlapping information of the scheduled resources further comprises information of the resource grouping, which is used for indicating information of the resource grouping corresponding to the scheduled resource overlapping indication.

22. The method of claim 21, wherein the information of the resource grouping comprises:

23. The method according to any of claims 17 to 19, wherein the overlapping information of the scheduled resources comprises information indicating resources of the overlapping part of the resources.

24. The method of claim 23, wherein the information for indicating the resources of the overlapping portion of the resources comprises:

at least one of a resource boundary indication or a resource grouping index;

25. The method according to any of claims 17 to 19, wherein the overlapping information of the downlink scheduling resources comprises information indicating resources with non-overlapping parts of resources.

26. The method according to any of claims 17 to 19, wherein the overlapping information of the downlink scheduling resources and/or the interference indication information of the downlink scheduling resources are carried in an uplink data channel or an uplink control channel.

27. The method according to any one of claims 17 to 19, wherein the overlapping information of the scheduled resources and/or the interference indication information of the scheduled resources are carried in a preset resource region of an uplink data channel, or replace partial data in the uplink data channel in resource mapping, or are jointly encoded with uplink data in the uplink data channel.

28. The method of claim 26, wherein the overlapping information of the scheduled resources and/or the interference indication information of the scheduled resources have a configured periodicity and an offset; or has the same period and offset as another information in the uplink control channel; or jointly encoded with uplink control information in the uplink control channel.

29. The method according to any of claims 17 to 19, wherein the interference indication information comprises an interference indication of a resource grouping comprised by the scheduled resources in resource block RB, resource block group RBG or frequency band granularity or a difference value of interference indications of comprised resource groupings, the interference indication being information indicating an interference hypothesis.

30. The method of claim 29, wherein the interference indication information further comprises information of a resource grouping corresponding to the interference hypothesis indication.

31. The method of claim 30, wherein the information of the resource grouping comprises:

32. The method of any one of claims 17 to 19, further comprising:

and sending configuration information of a non-zero power reference signal for channel estimation to the user equipment, wherein the configuration information is in a resource configuration domain pointed by a link with the attribute of interference measurement.

33. An information transmission apparatus, comprising: a processor and a memory, wherein the processor is capable of processing a plurality of data,

the memory stores instructions that, when executed by the processor, cause the apparatus to implement the method of any of claims 1 to 16 or the method of any of claims 17 to 32.