CN108737010B

CN108737010B - Information interaction method and device

Info

Publication number: CN108737010B
Application number: CN201710258408.2A
Authority: CN
Inventors: 李新彩; 赵亚军
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-04-19
Filing date: 2017-04-19
Publication date: 2024-04-30
Anticipated expiration: 2037-04-19
Also published as: CN108737010A; WO2018192444A1

Abstract

A method of information interaction, comprising: determining coordination information; and transmitting the coordination information. An apparatus for information interaction, comprising: the determining module is used for determining coordination information; and the transmission module is used for transmitting the coordination information. The scheme can realize dynamic resource coordination.

Description

Information interaction method and device

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for information interaction.

Background

In 5G communications, supporting service adaptation for forward compatibility is a necessary trend, and service adaptation refers to allowing semi-static configuration or dynamic configuration of an uplink and a downlink, so as to meet a service load requirement or match a service load change. The service adaptation on symmetric spectrum and asymmetric spectrum is uniformly defined as duplex flexibility in the current standard.

For flexible duplex, if each cell dynamically and adaptively changes the frame structure or uplink and downlink configuration according to the traffic load, DL-to-UL interference (downlink to uplink interference, also called eNB-to-eNB interference) or UL-to-DL INTERFERENCE (uplink to downlink interference, also called UE-to-UE interference, interference between user equipments) between adjacent cells will be caused, and the data transmission performance will be affected. And interaction coordination of some information among stations is a very effective means of interference cancellation and interference management.

In addition, when LTE (Long Term Evolution, long term evolution system) and NR (new RAT, new generation radio access technology) systems share the same system bandwidth, how to achieve efficient inter-system coexistence is also a problem to be solved.

The base stations originally have interactive interfaces, such as backhaul signaling and an X2 interface (which is an interconnection interface between e-NodeBs and supports direct transmission of data and signaling), but the time delay is too large to interact some information, at least 20ms, so that the requirements of a NR flexible system cannot be met, and dynamic coordination cannot be realized.

Disclosure of Invention

The embodiment of the invention provides a method and a device for information interaction, which are used for realizing dynamic resource coordination.

A method of information interaction, comprising:

Determining coordination information;

and transmitting the coordination information.

Optionally, the coordination information includes one or more of the following:

Uplink configuration information, downlink configuration information, transmission direction priority information, scheduling resource allocation information, interference level information, channel state indication information, resource information to be protected, dynamically configured reference signal pattern information, timing offset, resource allocation information when coordinating systems of different systems to share the same resource, position information of blank resources, or position information of reserved resources.

Optionally, the scheduling resource allocation information includes: pre-scheduled user equipment, and time-frequency resources and beam direction information of each user equipment.

Optionally, the resource allocation information when the systems of different systems share the same resource includes: transmission resources of the aperiodic signal and/or resources which are not used in the reserved resources.

Optionally, before the transmitting the coordination information, the method further includes:

and determining the resources for coordinating information transmission in a semi-static interaction mode of an X2 port or in an operation management maintenance configuration mode.

Optionally, the transmitting the coordination information includes:

the coordination information is carried directly by sending control information.

Optionally, before determining the coordination information, the method further includes:

The set of candidate coordination information is configured by means of X2 port semi-static interactions, or by means of operation management maintenance configuration,

The determined coordination information is determined from the set,

The transmitting the coordination information includes:

and dynamically indicating the coordination information by sending control information.

Optionally, the control information is sent through any one of the following channels:

physical downlink control channel, low-delay physical downlink control channel, physical downlink shared channel, low-delay physical downlink shared channel, predefined common channel, specified small time slot through semi-static coordination, and special downlink physical channel.

Optionally, the period of the specified minislots is configured by operation management maintenance or coordinated through the X2 port.

Optionally, the designated minislot is located in a physical downlink shared channel region.

Optionally, the control information is scrambled by a proprietary wireless network temporary identity.

Optionally, the control information is mapped to a first symbol of a slot or a first symbol of a small slot.

An apparatus for information interaction, comprising:

the determining module is used for determining coordination information;

and the transmission module is used for transmitting the coordination information.

Optionally, the coordination information includes one or more of the following:

Uplink configuration information, downlink configuration information, transmission direction priority information, scheduling resource allocation information, interference level information, channel state indication information, resource information to be protected, dynamically configured reference signal pattern information, timing offset, resource allocation information when coordinating systems of different systems to share the same resource, location information of blank resources, or location information of reserved resources,

The scheduling resource allocation information includes: pre-scheduled user equipment, and time-frequency resources and beam direction information of each user equipment;

The resource allocation information when the systems of different systems share the same resource comprises: transmission resources of the aperiodic signal and/or resources which are not used in the reserved resources.

Optionally, the determining module is further configured to determine the resource for coordinating information transmission by means of semi-static interaction of the X2 port or by means of operation management maintenance configuration.

Optionally, the transmission module directly carries the coordination information by sending control information.

Optionally, the apparatus further comprises:

A configuration module for configuring the candidate coordination information set through an X2 port semi-static interaction mode or an operation management maintenance configuration mode,

The determining module is the coordination information determined from the set;

The transmission module dynamically indicates the coordination information by sending control information.

Optionally, the control information is sent through any one of the following channels: physical downlink control channel, low-delay physical downlink control channel, physical downlink shared channel, low-delay physical downlink shared channel, predefined common channel, through semi-statically coordinated assigned small time slots, proprietary downlink physical channel,

The period of the designated small time slot is configured through operation management maintenance or is coordinated through an X2 port, and the designated small time slot is positioned in a physical downlink shared channel area.

Optionally, the control information is scrambled by a proprietary wireless network temporary identity, the control information being mapped to a first symbol of a slot or a first symbol of a small slot.

An information interaction device comprises a memory and a processor, wherein,

The memory stores the following instructions: determining coordination information; transmitting the coordination information;

the processor is used for executing the instructions stored in the memory.

A method of information interaction, comprising:

Receiving coordination information;

and performing interference elimination processing according to the coordination information.

Optionally, the coordination information includes one or more of the following:

Optionally, the performing interference cancellation processing according to the coordination information includes:

adjusting the scheduling users and/or the scheduling resources according to the scheduling resource allocation information in the coordination information, or indicating the scheduling users to send data in a smaller modulation coding mode or lower power; or alternatively

Switching between dynamic and semi-static duplex operation modes according to the coordination information; or alternatively

When the transmission direction of the semi-static configuration time slot or the transmission direction of the time slot structure in the time slot configuration is different from the transmission direction in the coordination information, transmitting downlink control information to instruct the user equipment scheduled in the designated time slot to perform sensing before hearing and then speaking before data transmission, or dynamically updating the structure information of the designated time slot; or alternatively

Carrying out coordination scheduling or data transmission of systems of different systems according to the coordination information; or alternatively

And notifying subordinate users of the resources to be protected to reserve the resources according to the resource information to be protected.

Optionally, the structure information of the designated time slot is dynamically updated, the information for notifying the subordinate users to reserve resources is carried by the public downlink control information,

The resource reservation of the protected resource means: informing the resource location that no data is transmitted or informing the locations of periodic and aperiodic reference signals to silence when data transmission is performed.

An apparatus for information interaction, comprising:

the receiving module is used for receiving the coordination information;

And the processing module is used for carrying out interference elimination processing according to the coordination information.

Optionally, the coordination information includes one or more of the following:

Optionally, the processing module performs interference cancellation processing according to the coordination information, including: adjusting the scheduling users and/or the scheduling resources according to the scheduling resource allocation information in the coordination information, or indicating the scheduling users to send data in a smaller modulation coding mode or lower power; or switching between dynamic and semi-static duplex operation modes according to the coordination information; or when the transmission direction of the semi-static configuration time slot or the transmission direction of the time slot structure in the time slot configuration is different from the transmission direction in the coordination information, transmitting downlink control information to instruct the user equipment scheduled in the appointed time slot to perform sensing before hearing and then speaking before data transmission, or dynamically updating the structure information of the appointed time slot; or carrying out coordination scheduling or data transmission of systems of different systems according to the coordination information; or notifying a subordinate user of the resource to be protected to reserve the resource according to the resource information to be protected.

An information interaction device comprises a memory and a processor, wherein,

The memory stores the following instructions: receiving coordination information, and performing interference elimination processing according to the coordination information;

the processor is used for executing the instructions stored in the memory.

A method of information interaction, comprising:

the user equipment receives coordination information of the base station;

and the user equipment forwards the coordination information to other base stations in an uplink control information mode.

Optionally, after the user equipment receives the coordination information, the method further includes:

independently encode the coordination information, or

The information related to the correct response of the hybrid automatic repeat request command in the coordination information and the uplink control information is coded jointly, or

And jointly encoding the coordination information and the channel state indication feedback information.

Optionally, when the coordination information is independently coded, the coordination information and the uplink control information are mapped to a physical uplink control channel in a frequency division or time division mode.

Optionally, the user equipment forwards the coordination information through any one of the following channels:

A physical uplink control channel;

a physical uplink shared channel;

A physical uplink shared channel with low time delay;

A physical uplink control channel with low time delay;

the dedicated uplink physical channel.

Optionally, the physical resources of the uplink control information are resources semi-statically coordinated through an X2 port between the base stations or configured by operation, maintenance and management OAM.

Optionally, the user equipment comprises user equipment at a cell edge.

An apparatus for information interaction, comprising:

The receiving module is used for receiving coordination information of the base station;

And the transmission module is used for forwarding the coordination information to other base stations in an uplink control information mode.

Optionally, the apparatus further comprises:

an encoding module, configured to encode the coordination information independently, or encode information related to correct response of the hybrid automatic repeat request command in the coordination information and the uplink control information jointly, or encode the coordination information and the channel state indication feedback information jointly,

When the coordination information is independently coded, the coordination information and the uplink control information are mapped to a physical uplink control channel in a frequency division or time division mode.

Optionally, the transmission module forwards the coordination information through any one of the following channels: a physical uplink control channel; a physical uplink shared channel; a physical uplink shared channel with low time delay; a physical uplink control channel with low time delay; the dedicated uplink physical channel.

Optionally, the physical resources of the uplink control information are semi-statically coordinated through an X2 port between the base stations or configured through operation maintenance management.

An information interaction device comprises a memory and a processor, wherein,

The memory stores the following instructions: receiving coordination information of a base station, and forwarding the coordination information to other base stations in an uplink control information mode;

the processor is used for executing the instructions stored in the memory.

In summary, the embodiment of the invention provides a method and a device for information interaction, which can realize dynamic resource coordination.

Drawings

FIG. 1 is a flow chart of a method for exchanging information between sites according to a first embodiment of the present invention;

Fig. 2 is a schematic diagram of a downlink channel structure according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of air interface resources coordinated between different stations for transmitting coordination information CI according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an information interaction device according to a second embodiment of the present invention;

fig. 5 is a schematic diagram of an apparatus for information interaction according to a third embodiment of the present invention;

FIG. 6 is a flow chart of a method for exchanging information between sites according to a fourth embodiment of the present invention;

FIG. 7 is a schematic diagram of switching between semi-static configuration and dynamic configuration operations according to an embodiment of the present invention;

fig. 8 is a schematic diagram of UE listening before speaking according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a dynamic uplink coordinated resource according to an embodiment of the present invention;

Fig. 10 is a schematic diagram of a channel structure of a short-term PUCCH carrying coordination information according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a channel structure of a long-term PUCCH carrying coordination information according to an embodiment of the present invention;

Fig. 12 is a schematic diagram of the position of CI transmissions in a slot according to an embodiment of the present invention;

Fig. 13 is a schematic diagram illustrating a slot position of a CI-carrying dedicated uplink physical channel CICH according to an embodiment of the present invention;

FIG. 14 is a schematic diagram of an apparatus for information interaction according to an embodiment of the present invention;

FIG. 15 is a flow chart of a method of information interaction according to an embodiment of the present invention;

FIG. 16 is a schematic diagram of an apparatus for information interaction according to an embodiment of the present invention;

Fig. 17 is a schematic diagram of uplink PUCCH resources and PRACH resources shared by NR and LTE through backhaul coordination according to an embodiment of the present invention;

Fig. 18 is a schematic diagram of a slot structure according to an embodiment of the present invention;

FIG. 19 is a schematic diagram of a pattern of X2 port semi-static coordination for air interface interaction resources according to an embodiment of the present invention;

Fig. 20 is a schematic diagram of scheduling with granularity of small timeslots according to an embodiment of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail hereinafter with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be arbitrarily combined with each other.

And coordinating the resources for data transmission among the base stations in the same cluster through air interface signaling, and carrying out data transmission and interference management according to coordination information. Specific examples are described in detail below.

Example 1

A method for information interaction between stations is used at a base station side, as shown in fig. 1, and comprises the following steps:

step 11, determining coordination information;

And step 12, transmitting the coordination information.

In step 12, the coordination information may be transmitted through air interface signaling.

The resources for coordinating the transmission of information may also be determined prior to step 12 by means of semi-static interactions at the X2 port, or by means of operation management maintenance configuration.

The time-frequency domain resource of the air interface signaling transmission is determined through backhaul link coordination or is configured through OAM (Operation Administration AND MAINTENANCE ), and the interference includes cross-link interference and interference when different systems share resources.

Wherein, in step 11, the coordination information includes one or more of the following information:

For example, the base station (or TRP (Transmission Reception Point, transmitting receiving node)) 1 determines a set of information of coordinated interference that needs to be interacted with, said set of information comprising at least one of the following information:

Information one: uplink and downlink configuration information, transmission direction information, or transmission direction priority information.

The uplink and downlink configuration information or the transmission direction information includes: the time slot structure is purely uplink, purely downlink, uplink dominant and downlink dominant.

Wherein, the resources of the control channel in the time slot structure of the uplink and downlink dominance are semi-static configuration.

The position of the uplink time slot is only informed, or the number of uplink time slots is given, or the position of the uplink time slot is given by means of the offset plus the number of time slots.

And information II: scheduling resource allocation information.

Such as pre-scheduled UEs and time-frequency resources and beam direction information for each UE. The number of scheduling parameter information, such as a beam index, a PRB (Physical RB) index, a slot (slot) index, or a position for scheduled data transmission.

And (3) information III: interference level Information or CSI (CHANNEL STATE Information, channel state indication) Information.

The CSI information includes: the interference between TRP-to-TRP, the CSI information fed back by the UE and the interference information between the UE-to-UE are measured by the base station.

For example, N interference levels are pre-defined or semi-statically coordinated, k bits to indicate the corresponding interference level.

Further, the CSI fed back by the UE has a correspondence with the measured link transmission of the interfering cell.

Information IV: which resources need to be protected from interference.

For example, the number of resources or symbols for transmitting an initial synchronization signal PSS/SSS/DRS, a broadcast signal, a system message, or a PUCCH/PDCCH control channel.

Or indicating that some slot indexes/some symbols are fixed to uplink slots and some slot indexes/some symbols are fixed to downlink slots.

Information five: dynamically configured reference signal pattern information.

The pattern of some predefined reference signals is interacted through the X2 port, and then the pattern of a specific reference signal is dynamically indicated.

Information six: timing offset (timing offset).

There may be an asynchronization between the two base stations so that a timing offset information need to be transmitted.

Information seven: resource allocation at the time of LTE/NR sharing is coordinated.

When LTE and NR share one system bandwidth, in order to improve resource utilization, neighboring base stations may be notified of semi-statically reserved dynamically unused resources for LTE transmission for transmission of NR data.

For LTE and NR uplink spectrum sharing:

first, a fixed scheme or a semi-static coordination scheme between stations determines resources of an LTE-PUCCH (Physical Uplink Control Channel ), an NR-PUCCH, an LTE-SRS (Sounding REFERENCE SIGNAL, sounding reference signal), an NR-SRS, an LTE-PRACH (Physical Random ACCESS CHANNEL ), and an NR-PRACH.

Then, the dynamic DCI (Downlink Control Information ) informs which resources of the reserved semi-static coordination resources are not used, for example, dynamically informs the LTE-PUCCH resources for PUSCH (Physical Uplink SHARED CHANNEL) or PUCCH transmission, and the dynamic DCI informs the location of the aperiodic NR-SRS resource.

For LTE and NR downlink spectrum sharing:

The dynamic DCI informs the LTE-MBSFN (Multimedia Broadcast multicast SERVICE SINGLE Frequency Network, multicast/multicast single frequency network) of the location of the subframe for data transmission of the NR. The dynamic DCI informs neighboring sites of the location of LTE and NR aperiodic CSI-RS (CHANNEL STATE Information-REFERENCE SIGNAL, channel state indication reference signals).

Information eight: the location of the blank resource.

The blank resources include reserved resource locations for transmitting measurement reference signals.

The coordination information transmission may be fixed or semi-statically configured in addition to dynamic transmission through air interface physical resources:

for example, the time domain period is fixed or predefined, e.g.: 1ms, or 0.5ms, or semi-statically coordinated between stations over the X2 port, or configured via OAM.

The frequency domain resource of the information is coordinated between stations through an X2 port or configured through OAM.

And the time-frequency resources sent by different base stations are different, for example, the information for interference coordination is sent by FDM (Frequency Division Multiplex, frequency division multiplexing), TDM (Time Division Multiplex, time division multiplexing) or CDM (Code Division Multiplexing ) mode, thereby ensuring the reliability of the transmission of the coordination information and avoiding the generated interference.

In step 12, the coordination information is transmitted, and the transmission method includes any one of the following methods:

The method comprises the following steps: the coordination information is transmitted in a two-step interaction mode:

Step a: configuring a set of candidate coordination information by means of semi-static interaction of an X2 port or by means of OAM configuration, determining coordination information to be transmitted in the set,

Step b: and dynamically indicating coordination information by sending downlink control information to determine which information in the specific information set.

The second method is as follows: and directly adopting dynamic downlink control information to transmit coordination information between stations.

And a third method: the base station firstly transmits coordination information to be coordinated to the UE through downlink control information, and then the UE forwards the coordination information to the adjacent base station through uplink control information.

In an embodiment, the base station 1 sends the above information set in the form of downlink control information through a physical channel of at least one of the following:

Mode one: transmitted through a Physical Downlink Control Channel (PDCCH) or an s-PDCCH (low latency physical downlink control channel).

A special RNTI (Radio Network Temporal Index, radio network temporary identifier) is defined, for example, a coordination information-radio network temporary identifier (CI-RNTI for short), the DCI corresponding to the corresponding coordination information is scrambled with the RNTI, and then the DCI is modulated by QPSK (Quadrature PHASE SHIFT KEYING) and sent out according to the resource mapping mode of the PDCCH.

The mapped resource location is the DCI information is sent in the common search space or in the agreed resources.

This PDCCH channel is located at the beginning of a slot or mini-slot.

Mode two: transmitted through PDSCH (Physical Downlink SHARED CHANNEL ) or s-PDSCH.

The coordination information and downlink data are multiplexed on the PDSCH in an FDM/TDM manner.

Mode three: a common channel, such as a coordinated control channel (CICH) is defined to carry this type of information. And the coordination information is transmitted in a transmission manner similar to that of a PCFICH (Physical Control Format Indicator Channel ) channel. The first symbol or the first two symbols of the slot of this channel, the downlink channel structure is shown in fig. 2.

The coordination information processing and sending process is as follows:

When the coordination information bit is smaller than 8 bits, the coordination information is encoded into 32 bits through a polar coding mode, then modulated into 16 symbols through QPSK (Quadrature PHASE SHIFT KEYING ), and then the symbol packets are mapped onto corresponding predefined resources or mapped onto discrete resource units through a transmission diversity mode.

Mode four: through some mini-slots of semi-static coordination, the period of these mini-slots is configured through OAM or coordinated through X2 port.

Further, the mini-slot is located in a PDSCH region.

For example, as shown in fig. 3, the air interface resources for transmitting coordination information are different for coordination between different stations. Thus, each TRP can hear the coordination information sent by other surrounding TRPs, so as to perform interference management.

Example two

Fig. 4 is a schematic diagram of an apparatus for information interaction according to an embodiment of the present invention, as shown in fig. 4, the apparatus of this embodiment includes:

A determining module 401, configured to determine coordination information;

A transmission module 402, configured to transmit the coordination information.

Wherein the coordination information includes one or more of the following:

The resource allocation information during system sharing of different systems comprises: transmission resources of the aperiodic signal and/or resources which are not used in the reserved resources.

In an embodiment, the determining module 401 is further configured to determine the resource for coordinating transmission of information by means of semi-static interaction of the X2 port or by means of operation management maintenance configuration.

In one embodiment, the transmission module 402 carries the coordination information directly by sending control information.

Example III

The device in this embodiment, as shown in fig. 5, further includes:

a configuration module 403, configured to configure the candidate coordination information set by means of semi-static interaction of the X2 port, or by means of operation management maintenance configuration,

The determining module 401 is the coordination information determined from the set;

the transmission module 402 dynamically indicates the coordination information by sending control information.

Wherein the control information is transmitted through any one of the following channels: physical downlink control channel, low-delay physical downlink control channel, physical downlink shared channel, low-delay physical downlink shared channel, predefined common channel, through semi-statically coordinated assigned small time slots, proprietary downlink physical channel,

Wherein the control information is scrambled by a proprietary wireless network temporary identity, the control information being mapped to a first symbol of a slot or a first symbol of a small slot.

The embodiment of the invention also provides an information interaction device, which comprises a memory and a processor, wherein,

the processor is used for executing the instructions stored in the memory.

Example IV

The present embodiment introduces that surrounding nodes receive the coordination information set and perform some subsequent operations.

As shown in fig. 6, a method for information interaction in this embodiment includes the following steps:

Step 21, receiving coordination information;

And step 22, performing interference elimination processing according to the coordination information.

For the receiving end of the coordination information set, the receiving end comprises UE subordinate to the base station and adjacent base stations capable of hearing each other:

Case one: when the receiving end is the base station 2, the base station 2 performs at least one of the following operations of interference management after receiving the information:

Operation one: and eliminating or avoiding interference according to the coordination information.

And adjusting the scheduling resources to avoid cross-link interference.

For example, the base station 2 allocates or re-indicates a new PRB, or a new beam index, to surrounding UEs of the base station 1 scheduling UE, or performs link direction adjustment, so as to avoid interference to the base station 1 scheduling UE. For example, the group-common-PDCCH is retransmitted or the PDCCH indicates one slot offset information, and the UE originally scheduled at the time domain location is adjusted to other locations.

Or instructs the base station or UE to transmit the transmitted data at a smaller MCS (Modulation and Coding Scheme, modulation coding scheme) or power.

And (2) operation II: switching between dynamic and semi-static TDD (Time Division Duplexing, time division duplex) modes of operation is performed.

Further, the rule of the handover is determined by the interference level in the coordination information.

For example, if the interference level in the coordination information is high, it is necessary to switch from the dynamic TDD mode to the semi-static mode, i.e., the period of the uplink-downlink direction configuration becomes long. If the interference level in the coordination information is low, the semi-static mode can be switched to the dynamic mode, namely, the period of the configuration in the uplink and downlink directions becomes smaller. Or the dynamic TDD operation switching is performed through the uplink and downlink configuration information.

The switching between semi-static configuration and dynamic configuration operations is shown in map 7.

And (3) operation three: signaling or configuring the perceived time slot.

When the transmission direction of the semi-static configuration time slot of the cell 1 under the base station 2 or the transmission direction of the time slot structure configured in a certain time slot is different from the transmission direction of the cell 2 adjacent to the cell 1 notified by the base station 1, for example, the base station 1 configures the time slot n to be downlink data transmission, and the base station 2 semi-static configures the time slot n to be uplink data transmission, the base station 2 sends downlink control information of a group common (group common) to instruct to schedule the UE in the time slot n to perceive as LBT before data transmission (Listen before Talk ), as shown in fig. 8, or dynamically update the structural information of the time slot n to adjust uplink to downlink.

Operation four: and carrying out coordinated scheduling of LTE/NR.

Assuming that base station 1 transmits LTE traffic within a certain bandwidth, base station 2 transmits NR data within the same bandwidth.

Base station 1 and base station 2 coordinate the transmission of PUCCH of LTE with certain fixed frequency domain resource locations on both sides of the system bandwidth by means of backhaul links, when the cell under which base station 1 belongs does not use the resource, base station 1 may send an OTA (Over-the-Air) signaling to notify base station 2 of the unused resource information, so that base station 2 can use the resource to perform data transmission of NR. Or the base station 2 notifies the base station 1 of the resource positions of the NR-SRS, and the base station 1 should avoid these resources when performing PUSCH scheduling. For the location of LTE-CRS (Common REFERENCE SIGNAL ), corresponding REs (Resource elements) need to be blanked out when NR data is transmitted.

The LTE needs to blank the resource positions of the NR DMRS (Demodulation REFERENCE SIGNAL) that are dynamically notified when transmitting data.

Or limiting the LTE sub-frame corresponding to the NR to adopt the granularity of mini-slot for scheduling transmission.

Such as dynamic uplink coordinated resources, as shown in fig. 9.

Operation five: and carrying out resource reservation or interference coordination on the resources to be protected.

For example, for a resource location for transmitting an initial synchronization signal PSS (Primary Synchronization Signal )/SSS (Secondary Synchronization Signal, secondary synchronization signal)/DRS (Discovery REFERENCE SIGNAL ), a broadcast signal, a system message or PBCH (physical broadcast channel), adjacent base stations need to reserve corresponding resources at the corresponding location and notify the location to be blank through group common PDCCH or PDCCH, or transmit downlink data at low power at the resource location as well.

For the indicated resource location of the PUCCH in long format, the base station reserves the resource location when transmitting downlink data at that time.

For the PUCCH and PDCCH of the short format, neighboring base stations configure the same number of symbols of the control channel or data transmission in the same direction to subordinate UEs.

In addition, for the notified resource location for the reference signal, for example, DMRS, CSI-RS, SRS (Sounding REFERENCE SIGNAL ), PTRS (PHASE TRACKING REFERENCE SIGNAL, phase tracking reference signal), the data transmission is performed by adopting the method of silence (muting) for the resource location, so as to avoid the interference to the reference signal.

And a second case:

When the receiving end is UE, the UE needs to forward the coordination information in a manner of uplink control information (UCI for short), and forward the coordination information to other base stations.

Further, the UE includes a cell edge UE.

Further, the coordination information is sent and transmitted by one of the following means:

mode one: and sending through the PUCCH, wherein the PUCCH comprises a short-duration (short format) PUCCH and a long-duration (long format) PUCCH.

The coordination Information is independently coded or jointly coded with HARQ (Hybrid Automatic Repeat Request ) -ACK (command correct response) Information in UCI Information, beam related Information or CSI (CHANNEL STATE Information, channel state indication) feedback Information.

And when in independent coding, the uplink control information and other uplink control information are mapped to a PUCCH channel for transmission in a frequency division or time division mode.

The channel structure of the Short-duration PUCCH carrying Coordination Information (CI) is shown in fig. 10, and the channel structure of the long-duration PUCCH carrying CI is shown in fig. 11.

Mode two: the position of the CI transmission in the slot is shown in fig. 12 by PUSCH or s-PUSCH transmission.

Mode three: transmitted over a dedicated uplink physical channel.

The resources of the proprietary channel are semi-statically configured by higher layer RRC (Radio Resource Control, radio resource control protocol) signaling or coordinated between base stations through the X2 port.

The slot position of the dedicated uplink physical channel CICH carrying the CI may be located at the beginning of the uplink, as shown in fig. 13, or in the middle of the uplink control channel and the uplink data channel.

The data processing process when CI sends through the channel is:

The information is scrambled by the received cell ID, then encoded in the manner of polar code, then modulated by QPSK, and the modulated symbol is mapped to the resource position of the time slot in the above figure by multiplying a spreading Sequence, wherein the spreading Sequence comprises a ZC Sequence and a PN (Pseudo-noise Sequence) or a Walsh (Walsh) Sequence.

Further, the physical resource location of the uplink control information carrying coordination information between stations is a resource coordinated between TRPs or base stations through an X2 port or configured through OAM.

When the base station of the adjacent cell transmits downlink data, corresponding resources are reserved, the reserved time domain granularity is mini-slot or slot, and the frequency domain is sub-band level. Meanwhile, the resources are also required to be reserved when the UE is scheduled to carry out uplink data transmission.

The surrounding similar TRP or base station, upon receiving this information, performs interference management in accordance with the operations described above in case one.

The method can effectively avoid the problem of cross-link interference and the interference problem when LTE and NR different systems coexist by adopting a mode of air interface dynamic interaction between stations, particularly, the method can dynamically inform other stations or systems of temporarily unused resources to use for the transmission of important control information, and improves the utilization rate of the resources. The signaling is carried by air interface information, and surrounding base stations and UEs can both recognize and receive. Different operators of the shared spectrum frequency band can hear the shared spectrum frequency band, so that the interference problem of the shared spectrum is solved.

Example five

Fig. 14 is a schematic diagram of an apparatus for information interaction according to an embodiment of the present invention, as shown in fig. 14, the apparatus of this embodiment includes:

A receiving module 141, configured to receive coordination information;

and a processing module 142, configured to perform interference cancellation processing according to the coordination information.

Wherein the coordination information includes one or more of the following:

In an embodiment, the processing module performs interference cancellation processing according to the interference coordination information, including: adjusting the scheduling users and/or the scheduling resources according to the scheduling resource allocation information in the interference coordination information, or indicating the scheduling users to send data in a smaller modulation coding mode or lower power; or switching between dynamic and semi-static duplex operation modes according to the interference coordination information; or when the transmission direction of the semi-static configuration time slot or the transmission direction of the time slot structure in the time slot configuration is different from the transmission direction in the interference coordination information, transmitting downlink control information to instruct the user equipment scheduled in the appointed time slot to perform sensing before hearing and then speaking before data transmission, or dynamically updating the structure information of the appointed time slot; or carrying out coordination scheduling of systems of different systems according to the interference coordination information; or notifying a subordinate user of the resource to be protected to reserve the resource according to the resource information to be protected.

In one embodiment, the structure information of the designated time slot and the information for notifying the subordinate users to carry out resource reservation are carried by the common downlink control information,

The resource reservation of the protected resource means: informing the resource location that no data is transmitted or informing the locations of periodic and aperiodic reference signals to silence when data transmission is performed. .

the processor is used for executing the instructions stored in the memory.

Example six

Fig. 15 is a flowchart of a method for information interaction according to an embodiment of the present invention, as shown in fig. 15, where the method in this embodiment includes:

step 31, the user equipment receives coordination information of the base station;

And step 32, the user equipment forwards the coordination information to other base stations in an uplink control information mode.

In an embodiment, after the user equipment receives the coordination information, the method may further include:

independently encode the coordination information, or

In an embodiment, the user equipment forwards the coordination information through any one of the following channels:

A physical uplink control channel;

a physical uplink shared channel;

A physical uplink shared channel with low time delay;

the dedicated uplink physical channel.

In an embodiment, the physical resource location of the uplink control information is a resource configured by semi-statically coordinating between base stations through an X2 port or by operation, maintenance and management OAM.

Wherein the user equipment comprises user equipment at the cell edge.

Example seven

Fig. 16 is a schematic diagram of an apparatus for information interaction according to an embodiment of the present invention, as shown in fig. 16, the apparatus of this embodiment includes:

A receiving module 161, configured to receive coordination information of a base station;

And the transmission module 162 is configured to forward the coordination information to other base stations by means of uplink control information.

In an embodiment, the apparatus may further include:

An encoding module 163, configured to independently encode the coordination information, or jointly encode information related to a correct response of a hybrid automatic repeat request command in the coordination information and uplink control information, or jointly encode the coordination information and channel state indication feedback information,

In an embodiment, the transmission module forwards the coordination information through any one of the following channels: a physical uplink control channel; a physical uplink shared channel; a physical uplink shared channel with low time delay; the dedicated uplink physical channel.

In an embodiment, the physical resource location of the uplink control information is semi-statically coordinated through an X2 port between base stations or configured through operation maintenance management.

the processor is used for executing the instructions stored in the memory.

Details of some of the processes are described in detail below with specific application examples.

Example eight

The present embodiment describes a manner of dynamically interacting uplink and downlink slot configuration or slot structure between N base stations or TRPs through air interface Downlink Control Information (DCI).

First, TRP1 determines a preconfigured slot structure information according to its own downlink load size and BSR (Buffer Status Report ) reported by all UEs. The specific information indication mode comprises the following steps:

Mode one: each time slot defines 2 bits, indicating that the type of the time slot is one of pure downlink, pure uplink, downlink dominant, and uplink dominant. If the period of the OTA signaling is m slots, the configuration information of the m slots is indicated by m×2 bits.

Mode two: only the positions of the pure upstream time slot and the upstream dominant time slot of the m time slots are indicated.

Mode three: only the position of the uplink slot is informed, given by way of offset + length.

For example, 2 bits indicate the offset of the position of the first uplink slot from the position of the slot in which the current DCI is located, or the current position plus an offset of 4 slot positions, and then 3 bits indicate the number of consecutive uplink slots.

And after receiving the information, surrounding TRPs perform uplink and downlink scheduling according to the information. For example, if the OTA signaling sent by TRP1 indicates that the time slot 1 is an uplink dominant time slot, then TRP around TRP1 should also configure time slot 1 as an uplink time slot or as an uplink dominant time slot, so as to avoid cross-link interference and ensure the performance of data transmission.

The above information may also be sent to the subordinate UE through the common-PDCCH or the group-common-PDCCH, and then the UE forwards the information to other base stations or TRPs through uplink control information or dedicated uplink channel resources, where the TRPs manage and coordinate the potentially existing cross-link interference after receiving the information on predefined or semi-statically coordinated resources.

In addition to uplink and downlink configuration, some reference signal configuration patterns, such as the position of a front-loaded DMRS for uplink and downlink data demodulation and the position of an additional DMRS, may be dynamically interacted. A pattern of aperiodic CSI-RS and a pattern of aperiodic SRS. The receiving base station or TRP needs to mut these resource locations at the time of data transmission after receiving this type of information.

Example nine

The embodiment describes a transmission method of coordination information, and information for resource coordination for interaction between stations is transmitted by one of the following methods:

the method comprises the following steps: the coordination information is transmitted in a two-step interaction mode.

Step A: some candidate configuration information sets are interacted semi-statically through an X2 port, and the information sets interacted between adjacent TRPs through feedback comprise the following information:

information one: a set of predefined candidates for uplink and downlink configuration.

For example, the structure of some time slots is predefined as one of the upstream U, downstream D, upstream dominant S1, downstream dominant S2. Some candidate consecutive 10 slot structures for semi-static interaction determination are shown in table 1 below, table 1 being an uplink downlink slot structure table:

TABLE 1

The structures of the time slots of the uplink dominant S1 and the downlink dominant S2 are semi-statically configured or indicated by dynamic DCI.

And information II: interference level or CSI information fed back by the UE.

For example, semi-static interactions define N interference levels, the first 15dB, the second 10dB, the third 5dB, and the fourth 0dB.

And (3) information III: which resources need to be protected from interference.

For example, two stations fix the structure of certain slots through X2 port semi-static negotiation for transmitting the initial synchronization signal PSS/SSS/DRS, broadcast signal, system message, or the resource or symbol number of PUCCH/PDCCH control channel.

Information IV: semi-statically configured reference signal pattern information.

Some predefined patterns of reference signals are semi-statically interacted through the X2 port. The reference signals comprise DMRS, CSI-RS, SRS and PTRS.

Information five: resource allocation when LTE/NR shares spectrum is coordinated.

When LTE and NR transmit data in the same system bandwidth, in order that data transmission of LTE does not affect transmission of PUCCH, SRS, PRACH channels of NR, stations should coordinate resources of NR uplink channels or signal transmission, and then LTE leaves these resources free during scheduling to avoid affecting NR UEs.

For example, two base stations or TRPs coordinate the resources of the uplink PUCCH and the resources of the PRACH shared by NR and LTE over backhaul as shown in fig. 17.

Information six: the location of the blank resource.

Information seven: timing offset.

And (B) step (B): and dynamically indicating the determined information in the candidate information set by sending downlink control information.

After some semi-static candidate information sets are interacted between stations, which configuration information in the candidate information sets can be indicated through dynamic air interface signaling, OTA signaling for short, in the follow-up.

For example, 3 bits to indicate the determined slot configuration information, and the specific structure of each of the upstream dominant and downstream dominant slots is given by dedicated dynamic signaling, such as S1 slots in the order of (number of symbols of downstream control channel, number of symbols of upstream data channel).

Defining 3 bits indicates interference level information, and a bitmap (bitmap) indicates whether some protected resources reserved semi-statically or fixedly are occupied or whether data transmission is possible. For example, the bitmap indicates which PRBs are actually occupied in the order of reserved PRBs.

The second method is as follows: and directly adopting dynamic downlink control signaling to transmit the coordination information.

TRP sends some coordination information described by surrounding TRP directly through air interface signaling, e.g. downlink control information, which has a slightly larger signaling overhead than the one in the first mode.

And a third method: the base station firstly transmits the information to be coordinated to the UE through the downlink control information, and then the UE forwards the coordination information to the adjacent base station through a relay mode of the UE. The specific procedure is described in example six below.

Through the method for interacting some coordination information among the stations, on one hand, the interference problem of the cross links of the same-frequency data transmission is solved, and the performance of the data transmission is ensured. On the other hand, the utilization rate of resources is improved when the LTE and NR share the spectrum.

Examples ten

The present embodiment describes processing after receiving the information when the reception side is TRP.

When the surrounding TRP receives the interaction coordination information, the following processes are performed according to the coordination information:

Interference is cancelled, e.g. by advanced receivers.

Further, the receiving end uses MMSE (Minimum Mean Squared Error, minimum mean square error estimation) according to the interference information, and the E-LMMSE-IRC receiver eliminates the interference.

And scheduling adjustment is carried out to avoid interference.

Further, different PRBs are allocated to surrounding UEs where the base station 1 schedules UEs, or different time instants are scheduled, or different beams are scheduled.

For example, if the base station 1 schedules the uplink of the UE1 to the PRBs 1 to 6 in a certain slot, the base station 2 needs to schedule the downlink or uplink of the UE2 around the UE1 to the PRBs 20 to 30 after receiving the information. Or the UE2 is also scheduled at PRBs 1-6, but the direction or beam index of the beam for data transmission is not the same.

Switching between dynamic and semi-static TDD modes is performed.

Or notify configuration aware timeslots.

Further, when the transmission direction or structure of the cell semi-static configuration time slot under the base station 2 is different from the transmission direction notified by the base station 1, for example, the base station 1 configures the time slot n to be downlink data transmission, and the base station 2 semi-static configures the time slot n to be uplink data transmission, the base station 2 sends downlink control information of a group common to instruct to schedule the UE in the time slot n to sense before data transmission, or dynamically update the structural information of the time slot n to adjust uplink to downlink.

And carrying out coordinated scheduling of LTE/NR.

Base station 1 and base station 2 coordinate the transmission of PUCCH of LTE via a backhaul link with certain fixed frequency domain resource locations on both sides of the system bandwidth, and when the cell under which base station 1 belongs does not use the resource, base station 1 may send an OTA signaling to base station 2, so that base station 2 may use the resource to perform data transmission of NR.

The operations performed after the receiving end receives the information can reduce the cross-link interference in the flexible duplex on one hand, and can solve the dynamic sharing of resources when the LTE and NR different systems coexist on the other hand, thereby improving the utilization rate of the resources.

Example eleven

The present embodiment describes a method of relaying coordination information through a terminal.

When direct dynamic interaction of coordination information between stations (including base stations and TRPs) is difficult, the interaction of the coordination information can be achieved in the following manner.

First, TRP1 (for example, TRP) transmits coordination information to subordinate UEs via a common downlink control channel including a group-common PDCCH and a cell-specific common PDCCH.

Then the subordinate UE at the cell edge re-carries the coordination information into the uplink control information and sends the uplink control information to other TRPs, and the specific sending mode comprises the following steps:

Mode one: and sending through the PUCCH, wherein the PUCCH comprises a short-duration PUCCH and a long-duration PUCCH. Wherein one or two OFDM symbols occupying one slot are occupied in the PUCCH time domain of the short-duration, and at least 4 symbols and at most 14 symbols are occupied in the PUCCH time domain of the long-duration.

The coordination information is independently coded or coded in combination with HARQ-ACK (hybrid automatic repeat request-acknowledgement) in UCI (uplink control information) information, beam related information or CSI feedback information.

Mode two: and transmitting through the PUSCH or the s-PUSCH.

Mode three: a common channel is defined and coordination information is transmitted in a transmission mode similar to the PCFICH channel. The channel is at the first symbol of the slot.

The slot structure may be as shown in fig. 18 below in addition to those above:

TRP1 transmits downlink control information in the first one or two symbols of slot n, which carries information about interference coordination between stations, which coordination information is scrambled by a common RNTI or each coordination information is scrambled by a dedicated RNTI. The UE, after receiving the information, reprocesss the information and sends the information to the neighboring base station TRP2. Then TRP2 configures the downlink control information of time slot n+1 as downlink at the beginning of time slot n+1, or transmits uplink power control adjustment information, and reduces the power of transmission of the uplink data originally scheduled in time slot n+1.

The resource position of the downlink control information transmission and the resource position of the uplink control information transmission in the time slot n are TRP1 and TRP2, which are coordinated through the X2 port.

The method can realize the dynamic interaction of coordination information between adjacent base stations or TRPs, improves the dynamic property and flexibility of coordination, and ensures the reliability of data transmission.

Example twelve

The method for determining the air interface resources for coordination information transmission between stations is described in this embodiment.

In order to hear each other between stations and accurately receive coordination information, and avoid the effect that the collision of air resources affects coordination in the process of sending the coordination information, the resources of stations in one cluster for sending the coordination information should be orthogonal. Specific orthogonal approaches include FDM, TDM, CDM.

For example, a pattern of resources for air interface interaction for 4 stations within a cluster through a fixed configuration or semi-static coordination through backhaul link X2 ports is shown in fig. 19.

And then, each station transmits own coordination information at the corresponding resource position according to the coordination pattern, and receives or blindly detects information transmitted by other adjacent stations on the corresponding resource. That is, if a certain station has information to be coordinated to be transmitted, the station transmits the information to be coordinated through the physical resource, and if there is no or no update of the coordination information, the station does not need to transmit.

Example thirteen

This embodiment describes interference coordination when different systems between stations, for example, NR and LTE share one spectrum.

Scene one: in the 2G frequency band, the LTE system and the NR system share a certain 20M uplink system bandwidth, i.e., the two systems simultaneously transmit uplink data in the 20M. The uplink data comprises LTE-PRACH, LTE-SRS, LTE-PUCCH, LTE-PUSCH, NR-PRACH, NR-PUCCH, NR-SRS and NR-PUSCH.

Firstly, resources which are initially accessed by the UE, namely PRB resources of the PRACH, need to be coordinated among stations, and then the stations need to avoid the PRB resources when scheduling uplink service data, so that the terminals can be ensured to access the system.

Then for SRS used for channel measurement or cross-link interference measurement, both LTE-SRS and NR-SRS are located at the last symbol of the subframe, so collision easily occurs. For periodic SRS, the resource of the periodic SRS needs to be coordinated between two stations, and the multiplexing transmission mode comprises FDM or TDM mode, and the coordination is semi-static through an X2 port. Where FDM includes coordination of different periods and offsets through different comb teeth or different sub-band frequency divisions.

For the aperiodic SRS, two stations may be staggered through the OTA air interface signaling provided by the embodiment of the present invention, for example, the resource positions of the aperiodic SRS of the downlink control information interaction LTE and NR are staggered in the FDM or TDM manner, so as to avoid collision of the two resources.

For PUCCH resources, two stations also need to coordinate through an X2 port in a semi-static mode or configure the resource positions of PUCCH of different systems through OAM, and meanwhile, when the stations schedule LTE and NR PUSCH data, the stations need to reserve the resources of the coordinated resources. Meanwhile, if some reserved resources are not used in a certain period, surrounding stations can be informed to carry out scheduling transmission of PUSCH data through OTA signaling.

For PUSCH scheduling, two stations may coordinate resources in the manner described above, or may coordinate beam directions of data transmission or orthogonally multiplexed code resources.

Scene II: in the 2G frequency band, the LTE system and the NR system share a certain 20M downlink system bandwidth, that is, the two systems simultaneously transmit downlink data in the 20M.

For MBSFN (Multimedia Broadcast multicast SERVICE SINGLE Frequency Network, multicast/multicast single frequency network) subframes of LTE, the station may schedule the remaining subframe resources of the downlink control channel for data transmission of NR. For non-MBSFN subframes, a resource sharing multiplexing mode among downlink synchronous signals PSS/SSS, downlink broadcast channels PBCH, LTE-CRS and downlink control channels needs to be considered.

Firstly, when data transmission is carried out, NR does not influence the transmission of the original LTE corresponding downlink channel signal, and the granularity of mini-slot can be adopted for scheduling, so that the symbol and PRB where LTE-PSS/SSS/PBCH are located are avoided, and the interference to LTE synchronization and broadcast channels is avoided, as shown in figure 20. Meanwhile, when the NR-PDSCH transmits data, the LTE-CRS and the RE corresponding to the CSI-RS need to be blanked out.

Meanwhile, when downlink subframes schedule certain resources to carry out LTE-PDSCH data transmission, stations inform the resource positions of downlink DMRS configured by NR in advance through OTA signaling, and then LTE silence at the positions, so that influence on NR channel estimation and measurement is avoided.

The embodiment of the invention also provides a computer readable storage medium which stores computer executable instructions which when executed implement the method for information interaction.

Those of ordinary skill in the art will appreciate that all or a portion of the steps of the methods described above may be implemented by a program that instructs associated hardware, and the program may be stored on a computer readable storage medium such as a read-only memory, a magnetic or optical disk, etc. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module/unit in the above embodiment may be implemented in the form of hardware, or may be implemented in the form of a software functional module. The present invention is not limited to any specific form of combination of hardware and software.

The foregoing is merely a preferred embodiment of the present invention, and of course, various other embodiments of the invention may be made by those skilled in the art without departing from the spirit and scope of the invention, and it is intended that all such modifications and variations be considered as falling within the scope of the appended claims.

Claims

1. A method of information interaction, comprising:

Determining coordination information;

transmitting the coordination information;

Wherein the coordination information includes one or more of the following:

Uplink configuration information, downlink configuration information, transmission direction priority information, scheduling resource allocation information, interference level information, channel state indication information, resource information to be protected, dynamically configured reference signal pattern information, timing offset, resource allocation information when coordinating systems of different systems to share the same resource, position information of blank resources, or position information of reserved resources;

before the transmission of the coordination information, the method further comprises the following steps:

determining the resources for coordinating information transmission in a semi-static interaction mode of an X2 port or in an operation management maintenance configuration mode;

The method further comprises the following steps of:

The determined coordination information is determined from the set,

The transmitting the coordination information includes:

2. The method of claim 1, wherein:

The scheduling resource allocation information includes: pre-scheduled user equipment, and time-frequency resources and beam direction information of each user equipment.

3. The method of claim 1, wherein:

4. The method of claim 1, wherein: the transmitting the coordination information includes:

5. The method of claim 4, wherein: the control information is sent through any one of the following channels:

6. The method of claim 5, wherein:

the period of the specified minislots is configured through operation management maintenance or coordinated through the X2 port.

7. The method of claim 6, wherein:

the designated minislots are located in a physical downlink shared channel region.

8. The method of claim 4, wherein:

the control information is scrambled by a proprietary wireless network temporary identity.

9. The method of claim 4, wherein:

The control information is mapped to the first symbol of a slot or the first symbol of a small slot.

10. An apparatus for information interaction, comprising:

the determining module is used for determining coordination information;

The transmission module is used for transmitting the coordination information;

Wherein the coordination information includes one or more of the following:

The determining module is further configured to determine the resource for coordinating information transmission in a semi-static interaction manner of the X2 port or in an operation management maintenance configuration manner;

The apparatus further comprises:

The determining module is the coordination information determined from the set;

11. The apparatus as claimed in claim 10, wherein:

12. The apparatus as claimed in claim 10, wherein:

The transmission module carries the coordination information directly by sending control information.

13. The apparatus as claimed in claim 12, wherein:

The control information is sent through any one of the following channels: physical downlink control channel, low-delay physical downlink control channel, physical downlink shared channel, low-delay physical downlink shared channel, predefined common channel, through semi-statically coordinated assigned small time slots, proprietary downlink physical channel,

14. The apparatus as claimed in claim 12, wherein:

The control information is scrambled by a proprietary radio network temporary identity and the control information is mapped to the first symbol of a slot or the first symbol of a small slot.

15. An information interaction device comprises a memory and a processor, and is characterized in that,

The processor is used for executing the instructions stored in the memory;

Wherein the coordination information includes one or more of the following:

The method further comprises the following steps of:

The determined coordination information is determined from the set,

The transmitting the coordination information includes:

16. A method of information interaction, comprising:

Receiving coordination information;

Performing interference elimination processing according to the coordination information;

the performing interference cancellation processing according to the coordination information includes:

17. The method as recited in claim 16, wherein: the coordination information includes one or more of the following:

18. The method as recited in claim 16, wherein:

the dynamic updating of the structure information of the appointed time slot and the information informing the subordinate users to carry out resource reservation are carried by the public downlink control information,

The resource reservation of the resource to be protected means: informing the resource location that no data is transmitted or informing the locations of periodic and aperiodic reference signals to silence when data transmission is performed.

19. An apparatus for information interaction, comprising:

the receiving module is used for receiving the coordination information;

the processing module is used for carrying out interference elimination processing according to the coordination information;

The processing module performs interference elimination processing according to the coordination information, and includes: adjusting the scheduling users and/or the scheduling resources according to the scheduling resource allocation information in the coordination information, or indicating the scheduling users to send data in a smaller modulation coding mode or lower power; or switching between dynamic and semi-static duplex operation modes according to the coordination information; or when the transmission direction of the semi-static configuration time slot or the transmission direction of the time slot structure in the time slot configuration is different from the transmission direction in the coordination information, transmitting downlink control information to instruct the user equipment scheduled in the appointed time slot to perform sensing before hearing and then speaking before data transmission, or dynamically updating the structure information of the appointed time slot; or carrying out coordination scheduling or data transmission of systems of different systems according to the coordination information; or notifying the subordinate users of the resources to be protected to reserve the resources according to the information of the resources to be protected.

20. The apparatus as claimed in claim 19, wherein: the coordination information includes one or more of the following:

21. The apparatus as claimed in claim 19, wherein:

22. An information interaction device comprises a memory and a processor, and is characterized in that,

Notifying subordinate users of the resources to be protected to reserve the resources according to the information of the resources to be protected;

the processor is used for executing the instructions stored in the memory.

23. A method of information interaction, comprising:

the user equipment receives coordination information of the base station;

the user equipment forwards the coordination information to other base stations in an uplink control information mode;

after the user equipment receives the coordination information, the method further comprises the following steps:

independently encode the coordination information, or

Jointly encoding the coordination information and the channel state indication feedback information;

the physical resources of the uplink control information are resources which are semi-statically coordinated through an X2 port or are configured through operation, maintenance and management (OAM).

24. The method of claim 23, wherein:

25. The method of claim 23, wherein: the user equipment forwards the coordination information through any one of the following channels:

A physical uplink control channel;

a physical uplink shared channel;

A physical uplink shared channel with low time delay;

A physical uplink control channel with low time delay;

the dedicated uplink physical channel.

26. The method of any one of claims 23-25, wherein:

The user equipment comprises user equipment at the cell edge.

27. An apparatus for information interaction, comprising:

The transmission module is used for forwarding the coordination information to other base stations in an uplink control information mode;

The apparatus further comprises:

the coding module is used for independently coding the coordination information, or jointly coding information related to correct response of the hybrid automatic repeat request command in the coordination information and the uplink control information, or jointly coding the coordination information and the channel state indication feedback information;

The physical resources of the uplink control information are semi-statically coordinated through an X2 port or configured through operation maintenance management between the base stations.

28. The apparatus as recited in claim 27, wherein: the coding module is further configured to:

29. The apparatus as recited in claim 27, wherein:

The transmission module forwards the coordination information through any one of the following channels: a physical uplink control channel; a physical uplink shared channel; a physical uplink shared channel with low time delay; a physical uplink control channel with low time delay; the dedicated uplink physical channel.

30. An information interaction device comprises a memory and a processor, and is characterized in that,

after receiving the coordination information of the base station, the method further comprises:

independently encode the coordination information, or

the physical resources of the uplink control information are semi-statically coordinated between the base stations through an X2 port, or

Configured by operation maintenance management;

the processor is used for executing the instructions stored in the memory.