CN108024363B - Interference processing method and device - Google Patents

Interference processing method and device Download PDF

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Publication number
CN108024363B
CN108024363B CN201710229770.7A CN201710229770A CN108024363B CN 108024363 B CN108024363 B CN 108024363B CN 201710229770 A CN201710229770 A CN 201710229770A CN 108024363 B CN108024363 B CN 108024363B
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information
resource
control channel
channel
transmission
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CN108024363A (en
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杨玲
赵亚军
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ZTE Corp
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ZTE Corp
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Priority to US16/346,512 priority Critical patent/US11212689B2/en
Priority to PCT/CN2017/109002 priority patent/WO2018082580A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/10Scheduling measurement reports ; Arrangements for measurement reports
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • H04W52/42TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B17/00Monitoring; Testing
    • H04B17/30Monitoring; Testing of propagation channels
    • H04B17/309Measuring or estimating channel quality parameters
    • H04B17/336Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058Allocation criteria
    • H04L5/0073Allocation arrangements that take into account other cell interferences
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/046Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/27Transitions between radio resource control [RRC] states

Abstract

The embodiment of the invention discloses an interference processing method, which comprises the following steps: the transmission equipment acquires first indication information; and according to the first indication information, the transmission equipment transmits on the specific resource. The embodiment of the invention also discloses an interference processing device.

Description

Interference processing method and device
The present application is based on and claims priority from chinese patent application number 201610963489.1, date 2016, 11, 04, the entire contents of which are incorporated herein by reference.
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for processing interference.
Background
Currently, the duplex mode adopted by the long term evolution (Long Term Evolution, LTE) system is divided into: both time division duplexing (Time Division Duplexing, TDD) and frequency division duplexing (Frequency Division Duplexing, FDD).
For the mobile communication system in the FDD mode, the receiving and transmitting are carried out on two separated symmetrical frequency channels, and the receiving and transmitting channels are separated by utilizing a protection frequency band, so that the mutual interference between signals is avoided. One section of spectrum resource is used for transmitting downlink signals, and the other section of spectrum resource is used for transmitting uplink signals. Whereas for a mobile communication system in TDD mode, the uplink and downlink communication between a base station to a terminal UE use different time slots of the same frequency channel (also called carrier), time is used to separate the receive and transmit channels. This duplex mode requires that the base station and the terminal (UE) must cooperate to operate properly.
Based on the analysis, the FDD system adopts symmetrical spectrum resources to allocate equal uplink and downlink resources, and the allocation mode is very suitable for the communication system with dominant voice service. And under the condition of asymmetric uplink and downlink service volume, larger resource waste can be caused. The TDD system has different time resource allocation manners, so that the ratio of uplink and downlink resources can be adjusted according to the traffic variation situation of the network, however, because the TDD network requires that uplink and downlink switching between the base stations and the UE ensure strict time synchronization, the whole network is required to adopt the same uplink and downlink subframe ratio.
However, with the rapid growth of the variety and number of mobile broadband services and the rapid development of mobile terminals, the demand for wireless communication continues to rise. The demand of uplink and downlink traffic is time-varying and varies according to regions, which results in that the existing duplex mode of the wireless communication network cannot be flexibly adapted to the current network development.
Based on this, the flexible duplex scheme is an important research topic in the future fifth Generation mobile communication technology (5 th-Generation, 5G) New air interface (NR). The object is to dynamically adjust the ratio of time slots occupied by uplink and downlink of each base station in a system according to the ratio of the respective uplink and downlink traffic. This feature makes it possible for adjacent cells to transmit one downstream signal and another upstream signal at the same time. That is, in the existing 5G network, in addition to the interference from the base station to the UE and from the UE to the base station in the conventional system, there is a cross link interference condition: base station to base station interference, and UE to UE interference. In addition, the cross link interference has not only cross link interference of data but also link interference of a control channel. There is currently no effective solution to the above-mentioned handling of control channel interference and/or data channel interference.
Disclosure of Invention
In view of this, it is desirable to provide an interference processing method and apparatus for reducing cross link interference caused by a flexible duplex mode.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides an interference processing method, including: the transmission equipment acquires first indication information; and according to the first indication information, the transmission equipment transmits on the specific resource.
In an embodiment of the present invention, the transmission device obtains the first indication information by at least one of the following manners:
predefined, physical layer DCI signaling, higher layer RRC signaling, over the X2 port, over the air interface.
In an embodiment of the present invention, the first indication information includes at least one of the following:
uplink grant, UL grant, downlink grant, scheduling request, SR, transmission duration, control channel information, data transmission information, transmission time domain structure, scheduling information, scheduling/HARQ timing relation, numerology parameter, subframe type, time slot information, small time slot information, subframe-to-time slot relation, subframe-to-small time slot relation, time slot-to-small time slot relation, traffic type, reference signal information, system information, random access information, time slot gap information, measurement information, perception related information, signal information, adjustment power information, empty resource information, resource allocation information, frame structure, carrier information, pattern index number, dynamic resource information, fixed resource information, transmission time window information, beam information, transmission beam set, transmission beam pattern, reception beam set, reception beam pattern, beam's shaping weight, retransmission information, priority information, empty resource indication information.
In an embodiment of the present invention, the control channel information includes at least one of the following:
control channel position, control channel starting position, control channel resource interval, control channel resource size, control channel resource number, period, control channel pattern index number, uplink control channel, downlink control channel.
In the embodiment of the present invention, the first indication information carries control channel information, including:
and acquiring the position of the transmission control channel through the control channel information.
In the embodiment of the present invention, the control channel location attribute may be at least one of the following:
cell-specific, UE-specific, group-specific, sharing common-specific.
In the embodiment of the invention, the control channel positions between different devices are aligned and/or not aligned.
In an embodiment of the invention, the method comprises at least one of the following:
the transmission equipment sends second indication information on the control channel;
acquiring the configuration condition of resources between the current control channel position and the next control channel position according to the second instruction;
acquiring the configuration condition of the resources in a period of time from the current control channel position according to the second instruction;
And acquiring the configuration condition of the resources in a period of time from the offset position according to the second instruction.
In an embodiment of the present invention, the second indication information includes at least one of the following:
downlink control information, uplink grant, downlink grant, transmission time domain structure, control channel location, data channel location, gap location, scheduling information, perceived operation location, scheduling/HARQ timing relation, interference measurement information, null resource indication information, whether data channel location is a dynamic resource, whether transmission time domain structure is indicated, whether transmission direction of a data channel is indicated, scheduling request SR, transmission duration, data transmission information, numerology parameter, subframe type, slot information, minislot information, subframe-to-slot relation, subframe-to-minislot relation, slot-to-minislot relation, traffic type, reference signal information, system information, random access information, adjustment power information, null resource information, resource allocation information, frame structure, carrier information, pattern index, dynamic resource information, fixed resource information, transmission time window information, beam information, transmission beam set, transmission beam pattern, reception beam set, reception beam pattern, beam forming weight, retransmission information, priority information, null resource indication information.
In the embodiment of the present invention, at least one of the following operations may be performed between the control channel positions, or between the current control channel position and the next control channel position, or within a period of time from the current control channel position, or before transmission on the resource within a period of time from the offset position:
sensing operation; interference measurement operations; interaction or negotiation operations; no operations are performed, directly transmitted on the resource; and transmitting according to the second indication information.
In an embodiment of the present invention, the performing a sensing operation includes at least one of:
energy sensing operation, signal detection operation.
In an embodiment of the present invention, the energy sensing operation includes at least one of:
if the detected/perceived energy is not greater than the first threshold value, judging that the channel is available;
if the detected/perceived energy is greater than the first threshold value and not greater than the second threshold value, judging that the channel is available;
if the detected/perceived energy is greater than the second threshold, determining that the channel is not available;
if the detected/perceived energy is greater than the first threshold, it is determined that the channel is not available.
In the embodiment of the present invention, for the channel unavailable situation, the transmission device may perform at least one of the following operations:
No transmission is performed; performing a signal detection operation; reduced transmit power operation; adjusting the transmission direction; the channel type is adjusted.
In an embodiment of the present invention, the signal detection operation includes:
information carried in the received signal is identified, or a frequency domain pattern of the received signal is identified.
In an embodiment of the present invention, the carried information includes at least one of the following:
whether a channel is available, uplink and downlink transmission information, orthogonal multiple access, common frequency/adjacent frequency information, common system/different system information, beam direction, beam identification, beam forming weight identification, cell identification, operator identification, sequence identification, cyclic shift identification, pre-configuration information of resources, frequency domain pattern information or labels.
In an embodiment of the present invention, the method includes:
the same numerology parameters and/or patterns are configured between different devices, and probe signals are sent according to the configuration, and/or,
in actual and effective transmission, different devices transmit by adopting respective numerology parameters.
In an embodiment of the present invention, the interaction or coordination operation includes:
the transmission device informs the surrounding devices of specific information of the transmission device; or alternatively, the process may be performed,
The transmission equipment interacts respective specific information;
in an embodiment of the present invention, the specific information includes at least one of:
numerology parameters, transmit time domain structure, start position of transmission, end position of transmission, duration of occupied channel, fixed/predetermined resource position, interval between fixed/predetermined resources, size of fixed/predetermined resources, fixed/predetermined resource pattern index, transmit time domain structure index, perform perceptual location information, interference measurement information, beam direction, beam forming weight, beam identification, beam pattern identification.
In the embodiment of the present invention, the device that receives the specific information may perform at least one of the following operations:
not processing; performing a sensing operation; adjusting the transmission direction on the resource with the opposite transmission direction; adjusting the channel/signal type; empty interfering resources or unaligned resources; reducing transmit power on interfering resources or unaligned resources; adjusting the beam direction; adjusting the transmit power on the beam; the beam direction is left empty.
In the embodiment of the present invention, the interference processing manner between the control channel and the data channel in the same time domain area includes at least one of the following:
Determining a processing mode according to the priorities of the control channel and the data channel;
the transmission device performs a sensing operation before the actual control channel resources and/or the actual data channel transmission resources;
reducing transmit power on a data channel aligned with the control channel location;
the different devices perform interference measurements before the control channel and/or the data channel, or interact or inform the surrounding devices of specific information;
the data channel resources in the same time region are empty, and/or the control channel resources are/is controlled;
the data channel and/or control channel beam direction and/or the transmit power on the beam are adjusted.
In the embodiment of the present invention, the determining a processing manner according to the priorities of the control channel and the data channel includes at least one of the following steps;
for the case that the control channel has higher priority, the data channel resource position which is in the alignment with the control channel resource can be performed at the data channel position, or the data channel transmitting power at the position aligned with the control channel resource can be reduced, or the sensing operation can be performed at the starting resource position of the data channel which is in the alignment with the control channel resource, the data channel at the position aligned with the control channel resource can be adjusted to be the control channel position, or the data channel transmitting beam direction can be adjusted, or the data channel beam range which is in the alignment with the control channel beam direction can be left; and/or the number of the groups of groups,
For the case that the data channel has higher priority, the control channel resource position aligned with the data channel resource can be performed at the control channel position, or the control channel transmission power at the control channel resource aligned position can be reduced, or the sensing operation can be performed at or before the start resource position of the control channel aligned with the data channel resource, or the control channel at the aligned data channel resource position can be adjusted to the data channel position, or the control channel transmission beam direction can be adjusted, or the control channel beam range aligned with the data channel beam direction can be left empty.
In the embodiment of the present invention, for the channel with high priority, one of the following operations may be performed:
and performing sensing operation, or directly transmitting a detection signal before actually transmitting the resource position, or performing sensing operation, transmitting the detection signal after sensing that the channel is available, and then performing actual transmission.
In an embodiment of the present invention, the method includes:
for different numerology situations, different devices configure the same frequency domain pattern of the sounding signal and/or use the same numerology.
In the embodiment of the present invention, the transmission device performs a sensing operation before an actual control channel resource and/or an actual data channel transmission resource, including:
the perceived operational location performed for control channel transmission may be the same as, or different from, the perceived operational location performed for data channel transmission.
In this embodiment of the present invention, the perceived operation location performed for data channel transmission is the first k OFDM symbols of the data channel location, where k is a positive integer greater than and/or equal to 1.
In an embodiment of the present invention, the different devices perform interference measurement before the control channel and/or the data channel, or interact or notify specific information to surrounding devices, including:
determining channel attributes at overlapping resource locations of the control channel and the data channel based on the interference measurements; and/or the number of the groups of groups,
the interference measurement results are interacted/notified, and/or interference resource positions, and/or high interference indication, and/or adopted numerology parameters, and/or channel attribute adjustment indication, and/or idle resource indication, and/or adjustment power indication, and/or priority level, and/or preset resource transmission structure are/is performed.
In an embodiment of the present invention, the priority includes at least one of: priority of different services, priority of different base stations, priority of different operators, priority of different channels and/or signals, priority of different systems, priority of different channel types.
In an embodiment of the present invention, the data channel or data channel information includes at least one of the following:
uplink data channel, downlink data channel, data channel position, data channel resource size, data channel start position, data channel resource interval, data channel resource number, period, data channel pattern index number
In an embodiment of the present invention, the transmission time domain structure includes at least one of the following:
data channels, gap, control channels, combinations thereof, and one or more of the combinations thereof.
In an embodiment of the present invention, the scheduling information includes at least one of the following:
the transmission block TB size, the modulation coding MCS mode, the redundancy version RV, the retransmission indication and the HARQ process number.
In an embodiment of the present invention, the scheduling/HARQ timing relationship includes at least one of:
timing relationship between downlink control and downlink data, timing relationship between downlink control and uplink data, timing relationship between uplink data and uplink control, and timing relationship between downlink data and uplink control.
In an embodiment of the present invention, the numerology parameter includes at least one of the following:
subcarrier spacing, CP, slot, mini-slot, the number of OFDM symbols contained in the slot, subframe, the length of OFDM symbols contained in the subframe, the number of mini-slots contained in the subframe, the number of small slots contained in the slot, gap.
In an embodiment of the present invention, the subframe type includes at least one of the following:
uplink subframe, downlink subframe, and mixed subframe type.
In an embodiment of the present invention, the system information includes at least one of the following:
master information block MIB, system information block SIB, physical broadcast channel PBCH.
In an embodiment of the present invention, the gap information, or measurement information, or perceptually relevant information includes at least one of the following:
the method comprises the steps of a time domain starting position of a gap, a time domain length of the gap, an end position of the gap, a perceived starting position, a perceived time domain length, a perceived end position, a first threshold value, a second threshold value, a perceived signal, a perceived position pattern, a perceived signal frequency domain pattern, a measured resource starting position, a measured resource size, a measured resource interval, a measured resource end position, an interference level indication, a measured signal, a spatial beam direction and a beam forming weight.
In a second aspect, an embodiment of the present invention provides an interference processing apparatus, including: the acquisition unit is used for acquiring the first indication information; and the transmission unit is used for transmitting on specific resources according to the first indication information.
In an embodiment of the present invention, the transmission device obtains the first indication information by at least one of the following manners: and predefining physical layer downlink control information DCI signaling, higher layer radio resource control RRC signaling, and passing through an X2 port and an air interface.
In an embodiment of the present invention, the first indication information includes at least one of the following: uplink grant, UL grant, downlink grant, scheduling request, SR, transmission duration, control channel information, data transmission information, transmission time domain structure, scheduling information, scheduling/hybrid automatic repeat request, HARQ, timing relationship, numerology parameter, subframe type, time slot information, minislot information, subframe-to-time slot relationship, subframe-to-minislot relationship, time slot-to-minislot relationship, traffic type, reference signal information, system information, random access information, time gap information, measurement information, perceptually relevant information, signal information, adjustment power information, overhead resource information, resource allocation information, frame structure, carrier information, pattern index, dynamic resource information, fixed resource information, transmission time window information, beam information, transmit beam set, transmit beam pattern, receive beam set, receive beam pattern, beam forming weight, retransmission information, priority information, overhead resource indication information.
In an embodiment of the present invention, the control channel information includes at least one of the following: control channel position, control channel starting position, control channel resource interval, control channel resource size, control channel resource number, period, control channel pattern index number, uplink control channel, downlink control channel.
In the embodiment of the present invention, the first indication information carries control channel information, including: and acquiring the position of the transmission control channel through the control channel information.
The embodiment of the invention provides an interference processing method and device, wherein a transmission device acquires first indication information, and then the transmission device transmits on specific resources according to the first indication information, so that the cross link interference problem caused by introducing a flexible duplex mode is reduced or solved to a certain extent.
Drawings
Fig. 1 is a schematic diagram of data channel interference occurring between adjacent devices using the same numerology parameter according to an embodiment of the present invention;
fig. 2 is a schematic diagram of transmission subframe structures between adjacent devices using the same numerology parameter in the same time region according to the embodiment of the present invention;
Fig. 3 is a schematic diagram of transmission of mixed subframes and different structures of the mixed subframes between adjacent devices using the same numerology parameter in the same time region according to an embodiment of the present invention;
fig. 4 is a schematic diagram of interference occurring when different service types provided in the embodiment of the present invention use the same numerology parameter;
fig. 5 is a schematic diagram of interference occurring when different service types provided in the embodiment of the present invention employ different numerology parameters;
fig. 6 is a schematic diagram of cross link interference occurring in the case of continuous transmission of different devices according to the embodiment of the present invention;
fig. 7 is a schematic diagram of alignment of control channel positions according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of the same resource size and equal intervals between resources according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a fixed uplink control channel and a downlink control channel according to an embodiment of the present invention;
FIG. 10 is a diagram illustrating a resource location of a dual interval and/or dual resource size according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of discrete resources within an aligned or fixed time window according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of aligned or continuous resources within a fixed time window according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of first level resource alignment between different devices according to an embodiment of the present invention;
FIG. 14 is a schematic diagram of a first-level resource partially overlapping between different devices according to an embodiment of the present invention;
FIG. 15 is a schematic diagram of first level resource non-overlapping between different devices according to an embodiment of the present invention;
FIG. 16 is a schematic diagram of indicating that a second level resource is aligned in resources between first level resources using first level resources according to an embodiment of the present invention;
FIG. 17 is a schematic diagram of using first level resources to indicate that second level resources among the resources between the first level resources are not aligned or not fully aligned according to an embodiment of the present invention;
FIG. 18 is a schematic diagram of indicating resource configuration between first level resources using first level resources according to an embodiment of the present invention;
FIG. 19 is a schematic diagram of a resource configuration for a certain period of time using first level resource indication according to an embodiment of the present invention;
fig. 20 is a schematic diagram of an apparatus for interference processing according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The transmission node/device in the present invention may be a base station, a terminal UE. The base station may be a Macro base station (Macro eNB) or a micro base station (Small Cell eNB).
In the present invention, the specific resource may have a fixed resource, and/or a dynamic resource, and/or a resource attribute on a resource that is not fixed, or is flexibly or dynamically determined/changed (that is, uplink transmission and/or downlink transmission and/or gap, and/or perceived location, and/or interference measurement location, and/or control channel location is not determined on the resource).
The reference signal information in the present invention refers to a sequence of a reference signal, and/or a sequence number, and/or a cyclic shift number, and/or a time domain position of the reference signal, and/or a time domain start position of the reference signal, and/or a time domain length of the reference signal, and/or a time domain end position of the reference signal, and/or a number of resources occupied by a time domain of the reference signal, and/or a time domain interval of the reference signal, and/or a time domain pattern of the reference signal, and/or a frequency domain position of the reference signal, and/or a frequency domain start position of the reference signal, and/or a frequency domain length of the reference signal, and/or a frequency domain end position of the reference signal, and/or a number of resources occupied by a frequency domain of the reference signal, and/or a frequency domain interval of the reference signal, and/or a frequency domain pattern of the reference signal. Wherein the resource may be at least one of: OFDM symbols, slots, minislots, subframes. The reference signals shown may be present within a slot, and/or within a small slot, and/or within a subframe. The reference signal may be sent according to a signaling trigger, may be sent at a fixed location, or may be sent at a periodic point.
Optionally, different devices, or devices of different traffic types, or devices of different numerology references, use the same numerology parameter for transmission of at least one of the 4 Msg messages in random access for reference signals, and/or control channels, and/or sense signals, and/or occupancy signals, and/or system information. The transmission of the remaining signals/channels may be in accordance with respective numerology parameters.
The reference signal in the invention comprises one of the following components: cell-specific reference signals (Cell-specific Reference Signal, CRS), demodulation reference signals (DeModulation Reference Signal, DMRS), single frequency network Multicast/broadcast (Multicast/Broadcast over Single Frequency Network, MBSFN) reference signals, location reference signals (Position Reference Signal, PRS), specific reference signals (Dedicated Reference Signal, DRS), sounding reference signals (Sounding Reference Signal, SRS).
The system message in the invention comprises at least one of the following components: a master information block (Master Information Block, MIB), a system information block (System Information Block, SIB), a physical broadcast channel (Physical Broadcast Channel, PBCH), and the like.
The random access PRACH related information in the invention comprises at least one of the following: preamble, msg1, msg2, msg3, msg4. The method mainly ensures that information sent on specific resources is free from interference or reduces interference influence through a specific resource alignment mode among devices.
The empty resource information in the invention comprises at least one of the following: in the time domain: a starting position of the empty resource, a size of the empty resource, a length of the empty resource, and an ending position of the empty resource; a null resource indication identification (the identification may include at least one of time domain, frequency domain, code domain, space domain); in the frequency domain: a starting position of the empty resource, a size of the empty resource, a length of the empty resource, and an ending position of the empty resource; spatially domain: null beam direction, beam width, beam forming weights, null beam pattern.
The resource configuration information in the invention comprises at least one of the following: data resource location, data transmission direction on the resources, control resource location, resource attributes, resource indication marks, which resources are fixed, what specific channels/signals are transmitted on the fixed resources, which resources are flexibly configurable, measure resource location, sense resource location, etc. The main idea is as follows: in a flexible TDD system, all/part of the resources are fixed and/or all/part of the resources can be flexibly configured and/or whether a determination is made on a fixed part of the resources as to which information the resources are specifically used for transmission. Whether to perform a sensing operation prior to transmission on a fixed/predetermined resource and/or a flexibly configured resource; and/or sending notification/indication information to the surrounding devices; and/or information for interaction/coordination with surrounding devices, e.g., ready to transmit on the resource, numerology parameters, use of resource location information, undetermined use of resource location information, pre-use of channel and/or signal information transmitted on the resource, sequence, cyclic shift, perceived operation location information, control channel location information, power adjustment indication, transmission direction, adjustment transmission direction indication, priority information, beam direction, beam forming weights, beam pattern; and/or, starting a location-aware operation on the resource. Further, for flexibly configured resources, and/or fixed/predefined resources, the resource configuration in the flexible and/or fixed/predefined resources may be indicated by control signaling. The fixed/predetermined resources may transmit at least one of control channel, data channel, system information, PSS/SSS, reference signal, random access correlation procedure, which may reduce cross link interference of data and/or control channel to some extent if one of the above information is transmitted between different devices at fixed/predetermined locations. The resource attribute may refer to Cell-specific, and/or UE-specific, and/or team-specific, and/or common-specific, among others. Optionally, if the actual transmission is preceded by a pre-indicated/configured resource allocation situation, the device may adjust the actual resource usage/configuration situation according to different traffic reliability requirements, and/or different traffic/channel/signal/device priorities, and/or dynamically changing uplink/downlink traffic, and/or sensing results, and/or interference measurement results, and/or interference levels, and/or coordination/interaction information, and/or signaling indications. The resource usage/configuration situation may be understood as that uplink data is originally transmitted on the resource, and the information may be used to adjust downlink transmission on the resource, or adjust UEs scheduled on the resource, or not transmit (i.e. idle the resource), and/or adjust a data channel and/or a control channel and/or a perceived location/transmission structure, and/or adjust transmission power on the resource, etc.
The frame structure in the invention comprises at least one of the following: frame structure type 1 (e.g., FDD), frame structure type 2 (e.g., TDD), frame structure type 3 (e.g., flexible or dynamic frame structure), fully flexible subframe proportioning/subframe type, fixed and flexible/dynamic combined frame structure.
The carrier information in the present invention refers to at least one carrier, or a plurality of carriers, or paired carriers, or FDD carrier, TDD carrier, flexible duplex carrier, or full duplex carrier.
The pattern index number in the invention means that a specific resource pattern can be determined according to the pattern index number. Wherein: the resource may be at least one of a control channel resource, a data channel resource, a system information resource, a PSS/SSS resource, a reference signal resource, a random access related procedure resource. The resource pattern may also be determined by at least one of the following parameters: the starting position, the ending position, the interval between the resources, the size of the resources, the number of the resources, the offset and the period.
The transmission time window information in the present invention refers to a transmission that can be used for at least one of a control channel, a data channel, system information, PSS/SSS, a reference signal, and a random access correlation process on a resource in a time window. The resources within the time window may be contiguous in the time domain or, alternatively, discrete in the time domain. The resources within the time window may be determined by at least one of the following parameters: a starting position, an ending position, an interval between resources, a size/length of the resources, a number of the resources, an offset, and a period.
The first indication information and the second indication information in the present invention may be different from each other or the same as each other in terms of information content.
The first threshold value and the second threshold value in the invention can be the same or different. Preferably, the second threshold value is greater than and/or equal to the first threshold value. The threshold unit may be dbm or no unit. The first threshold value and the second threshold value may be determined by at least one of: predefined, physical layer DCI signaling indication, higher layer RRC signaling indication, negotiation between base stations and UE, negotiation between UE and UE. Alternatively, the threshold values for the control channel and, optionally, the data channel may be configured differently, or may be the same, if a perceived operation is to be performed on the control channel and/or, optionally, the data channel.
The numerology parameters described in the present invention include at least one of the following: subcarrier spacing, CP, slot, mini-slot, the number of OFDM symbols contained in slot, subframe, the length of OFDM symbols contained in subframe, the number of mini-slots contained in subframe, the number of small slots contained in slot, the length of gap, the number of symbols occupied by gap. The gap may be used to perform sensing operations. The gap position information may be fixed or dynamically indicated by the physical layer DCI signaling.
The mixed subframe type in the invention comprises at least one of the following: downlink control + data; downlink control + gap + data; downlink control + data + gap; gap+downlink control+data; gap+ downstream control+gap+ data; gap+downlink control+data+gap; downlink control + gap + data + gap; gap+downstream control+gap+data+gap; data+uplink control; data+gap+uplink control; data + uplink control + gap; gap+data+uplink control; gap+ data+gap+ uplink control; gap + data + uplink control + gap; data+gap+uplink control+gap; gap+ data+gap+ uplink control+gap; downlink control + data + uplink control; downlink control + gap + data + uplink control; downlink control + data + gap + uplink control; downlink control + data + uplink control + gap; gap+downstream control+data+upstream control; downlink control+gap+data+gap+uplink control; downlink control + data + gap + uplink control + gap; downlink control + data + gap + uplink control + gap; gap+downstream control+gap+data+upstream control; gap+downstream control+data+gap+upstream control; gap+downlink control+data+uplink control+gap; gap+ downstream control+gap+ data+gap+ upstream control; gap+downstream control+gap+data+upstream control+gap; downstream control+gap+data+gap+upstream control+gap. For example, the hybrid subframe type is downlink control+data, which means that the data is after the downlink control; for another example, the hybrid subframe type is downlink control+gap+ data, meaning that the downlink control is followed by gap, followed by data.
The time domain structure of the time unit in the present invention may be: upstream, or downstream, or a hybrid structure. Wherein, the mixed structure can be: downlink control, data (refer to uplink data or downlink data), uplink control, and any combination of time intervals gap. The position of the time interval gap may be before, after, or above, or below the position of the downlink control, and/or the data, and/or the uplink control. For example, the number of the cells to be processed,
downlink control + data; or alternatively, the process may be performed,
(one gap case) downlink control + time interval gap + data, or downlink control + data + time interval gap, or time interval gap + downlink control + data; or alternatively, the process may be performed,
(two gap cases) time interval gap+downlink control+time interval gap+data, or time interval gap+downlink control+data+time interval gap, or downlink control+time interval gap+data+time interval gap; or alternatively, the process may be performed,
(three gap cases) time interval gap+downstream control+time interval gap+data+time interval gap; or alternatively, the process may be performed,
data+uplink control; or alternatively, the process may be performed,
(one gap case) data + time interval gap + upstream control; or, data+uplink control+time interval gap; or, the time interval gap+data+uplink control; or alternatively, the process may be performed,
(two gap cases) time interval gap+data+time interval gap+upstream control, or time interval gap+data+upstream control+time interval gap, or data+time interval gap+upstream control+time interval gap; or alternatively, the process may be performed,
(three gap cases) time interval gap + data + time interval gap + uplink control + time interval gap; or alternatively, the process may be performed,
downlink control + data + uplink control; or alternatively, the process may be performed,
(one gap case) downstream control + time interval gap + data + upstream control; or, downlink control+data+time interval gap+uplink control; or, downlink control+data+uplink control+time interval gap; or, the time interval gap+downlink control+data+uplink control; or alternatively, the process may be performed,
(two gap cases) downstream control + time interval gap + data + time interval gap + upstream control; or, downlink control + data + time interval gap + uplink control + time interval gap; or, downlink control + data + time interval gap + uplink control + time interval gap; or, the time interval gap+downlink control+time interval gap+data+uplink control; or, the time interval gap+downlink control+data+time interval gap+uplink control; or, the time interval gap+downlink control+data+uplink control+time interval gap; or alternatively, the process may be performed,
(three gap cases) time interval gap+downstream control+time interval gap+data+time interval gap+upstream control; or, the time interval gap+downlink control+time interval gap+data+uplink control+time interval gap; or, downlink control + time interval gap + data + time interval gap + uplink control + time interval gap;
optionally, the time unit may include one or several uplink, and/or downlink, and/or hybrid structures. The time unit granularity may be a subframe, or a slot, or a mini-slot, or an OFDM symbol.
Optionally, the time cell structure, and/or the parameters or elements that make up the time cell may be obtained by: the physical layer DCI signaling, or higher layer RRC signaling, negotiations/interactions between base stations, or negotiations or interactions between UEs, or negotiations between base stations and UEs, or predefined. The interaction information between the nodes can be through an X2 port or a space interface. For further details of signaling indications, see the example embodiment methods.
The method is suitable for the link interference between macro base stations and micro base stations under a CA architecture, or between micro base stations or between macro base stations or between terminals, is also suitable for the problem of each link interference under a DC scene, is also suitable for the problem of the link interference between different macro base stations or different micro base stations or between different UE under a single cell condition, and is also suitable for the problem of the link interference under any scene. In addition, the interference problem for the same system, different system, same operator, or different operator, or synchronous or asynchronous scene is also applicable.
The numerology parameters described in the present invention include at least one of the following: subcarrier spacing, CP, slot, mini-slot, the number of OFDM symbols contained in the slot, subframe, the length of OFDM symbols contained in the subframe, the number of mini-slots contained in the subframe, the number of slots contained in the subframe, and the number of small slots contained in the slot.
Example 1
The embodiment mainly provides a transmission position and/or an acquisition mode of the control channel in a time interval.
As is known, in wireless communication systems, control channels are very important. For downlink transmission, loss of the control channel means loss of the downlink data channel. For uplink, the loss of uplink grant means the loss of uplink transmission opportunity. For signals sent in a non-periodic manner, the loss of the trigger signaling means that corresponding signals cannot be sent according to the requirements, so that the system performance is affected.
Based on this, in a flexible duplex, or dynamic TDD, system, it is very necessary to ensure that the control channel is protected from interference in order to prevent important information from being missed or lost. Wherein dynamic TDD means that the transmission direction in each time unit may be dynamically changed. The time unit may be at least one of: a subframe, a time slot, a small time slot, a basic transmission unit, an orthogonal frequency division multiple access OFDM symbol, a scheduling unit, and a time region formed by combining at least one of the above. A small slot (also called mini-slot) refers to a time region that is smaller than the number of time domain resources in the slot, or that is short in time domain length. Where a slot may contain k combinations of minislots. k is a positive integer greater than and/or equal to 1. The smallest time-domain unit in a slot and/or a small slot is an OFDM symbol. Preferably, the OFDM symbol lengths in different slots, or in small slots, may be different/the same, and/or the number may be different/the same. The basic transmission unit refers to a time region composed of p specific time domain resources, wherein the specific time domain resources may be at least one of the following: subframe, radio frame, slot, minislot, OFDM symbol. p is a positive integer greater than and/or equal to 1. The transmission direction is upstream and/or downstream.
Further, the location of the control channel (including: time domain, and/or frequency domain) in the time unit may be at least one of: front-end specific time domain resources, upper frequency domain resources in specific frequency bands, and downlink frequency domain resources in specific frequency bands. Wherein a particular time domain resource may be comprised of t time domain resources, wherein the time domain resource granularity may be at least one of: mini-OFDM symbols (which may be understood as insufficient OFDM symbol length), OFDM symbols, slots, mini-slots, subframes. t is a positive integer greater than and/or equal to 1. The specific frequency band may be the entire bandwidth, or a sub-band, or a resource block RB, or a resource block group RBG, a resource element RE, a sub-carrier. Accordingly, the specific resource on the specific frequency band may be m subcarriers, or RBs, or subbands.
Further, the location information (e.g., time domain resource starting location, number of time domain resources, time domain resource interval, time domain pattern index, frequency domain resource starting location, number of frequency domain resources, frequency domain resource interval, frequency domain pattern index) of the control channel may be determined by at least one of: physical layer DCI signaling, predefined, higher layer radio resource control RRC signaling, base station-to-base station negotiation, base station-to-UE negotiation, UE-to-UE negotiation. Optionally, the signaling carries at least one of a time domain resource starting position, a time domain resource number, a time domain resource interval, a time domain pattern index, a frequency domain resource starting position, a frequency domain resource number, a frequency domain resource interval, a frequency domain pattern index, and the like, and the position of the control channel is determined based on the indication information in the signaling. Optionally, the signaling may also carry information about a relevant time unit, for example, a time unit time domain, and/or a frequency domain structure, a time unit type (uplink, downlink, or hybrid (that is, at least one of uplink, downlink, control channel, interval), scheduling information (for example, MCS, modulation and demodulation scheme, RV, HARQ process number, etc.), a timing relationship (for example, a timing relationship between downlink control and downlink data, a timing relationship between downlink control and uplink data, a timing relationship between uplink data and uplink control, etc.), and so on.
Example 2
In this embodiment, cross link interference analysis under different scenarios is presented. Wherein, the cross link interference is divided into: data channel interference, and/or control channel interference.
For flexible duplexing, or dynamic TDD, the uplink and downlink traffic is time-varying, so that cross-link interference (also referred to as cross-link interference) problems occur when neighboring devices transmit in the same time interval. Cross-link interference (also known as cross-link interference) exists not only in the data channel but also in the control channel.
A schematic representation of the occurrence of data channels and/or control channel interference in several classical scenarios is presented below.
Scene 1: data channel interference scenarios that occur between neighboring devices that employ the same numerology parameters.
As shown in fig. 1, dot filling (e.g.
Figure BDA0001266308390000171
Shown) represents the control channel, line filling (e.g.)>
Figure BDA0001266308390000172
Shown) is cross-link interference for the data channel. The inter-device control channels are aligned, as illustrated in fig. 1, to some extent avoiding the cross-link interference problem of the control channels.
Optionally, there may be control channels between the aligned control channels, and due to flexible uplink or downlink transmission, there may be interference between the control channels and the data channels, and there may also be interference between the data channels caused by opposite transmission directions of the devices on the same resource.
Alternatively, if the control channels are aligned and no control channel appears on resources other than the aligned control channels, then only cross-link interference of the data channel may appear at this time, because the transmission directions of the devices are different on the same time domain resource, or the data channel interference appears between the adjacent devices, because the transmission directions of the adjacent devices are different on a certain time domain resource.
Scene 2: data channel interference occurring between neighboring devices employing the same numerology parameters, and/or control channel interference scenarios. The adjacent devices transmit according to the mixed subframe type and/or the uplink or downlink subframe type in the same time zone, thus the control channel and/or the data channel interference occurs. Wherein the mixed subframe type is composed of at least one of: control, data, time gap. Optionally, controlling includes at least one of: and (5) downlink control and uplink control. The data includes at least one of: uplink data and downlink data.
Specifically, for scenario 2, it can be further refined to the following cases:
case one: the transmission subframe structure is different between adjacent devices using the same numerology parameter in the same time zone. As shown in fig. 2, the device 1 uses a hybrid subframe type (e.g., downlink control + (optionally, gap) +uplink/downlink data transmission), and the device 2 performs uplink/downlink transmission in the same time zone. At this time, whether the two devices transmit uplink or downlink on the data channel, the transmission of the downlink control may be interfered by the data channel of the device 2 for the device 1. However, for device 2, the transmission of the data channel may be affected by the interference of device 1 transmitting the control channel. Based on this, it is necessary to solve the control channel interference problem, since the control channel is quite important for transmission or decoding, etc.
Similar to the downlink control channel interference described in fig. 2, the uplink control channel is interfered, and data channel transmission may occur in one device, and the adjacent device uses mixed subframe transmission (e.g., uplink/downlink data+ (optionally, gap) + uplink control), where the data channel transmission of the device may interfere with the uplink control channel of the adjacent device. For case one, if the neighboring devices employ the same transmission direction on the data channel, cross-link interference of the data channel does not occur. Conversely, if different transmission directions are employed, cross-link interference of the data channels may occur.
Case 2: the adjacent devices adopting the same numerology parameter adopt mixed subframe transmission in the same time zone and the mixed subframe structures are different. As shown in fig. 3, if one device uses downlink control+ (optionally, gap) + data transmission structure, and an adjacent device uses data+ (optionally, gap) + uplink control structure in the same time region, then a downlink control channel may occur, and/or an uplink control channel may be interfered. Alternatively, data channel cross-link interference may also occur if neighboring devices employ different transmission directions on the data channel.
Case 3: different traffic types use the same numerology parameters to multiplex the situation in one time domain. For example, when the eMBB and the URLLC are multiplexed, when the eMBB and the URLLC use the same numerology, due to the very delay-sensitive property of the URLLC, the transmission time is typically several OFDM symbols, which may cause control channel interference and/or data channel interference. As shown in fig. 4, the transmission directions of the data channels are the same in the time zone, and cross-link interference of the data channels may occur. Optionally, control channel interference may occur because one device is transmitting data on the time domain location resource of the control channel.
Scene 3: data channel interference occurring between neighboring devices employing different numerology parameters, and/or control channel interference scenarios. For three major services present in NR 5G: eMBB, mMTC, URLLC, data channels, and/or control channel interference conditions may occur when different services are multiplexed together.
Specifically, for scenario 3, when devices of different numerology parameters multiplex within the same time region, e.g., when the eMBB and URLLC employ different numerologies, control channel interference may occur, and/or data channel interference may occur, as shown in fig. 5. Fig. 5 is only a schematic diagram, and further, it may be further reduced that when different devices only transmit data channels in slot #n, since one device performs uplink and/or downlink data channel transmission in slot #n, cross link interference of data channels may occur. Alternatively, when different devices perform not only data channel transmission but also control channel transmission in slot#n, a problem of control channel interference may occur, and in addition, if different devices use different transmission directions on the data channel, data channel interference may also occur.
Scene 4: the device transmits y time zones continuously, while the neighboring device transmits x time zones, at which time multiplexing between different devices may occur, data channels, and/or control channel interference. Wherein x and y are positive integers greater than and/or equal to 1. As shown in fig. 6, device a occupies three time intervals, and device B occupies two time intervals, and each time interval has a control channel therein, at this time, when device a transmits on three consecutive time intervals, it may affect the data channel of device B and/or the control channel, thereby generating control channel interference and/or data channel interference problem. Wherein data channel interference may occur if different devices transmit in different directions on the data channel. If there are not only data channels but also control channels in the time interval or the time zone composed of multiple time intervals, at this time, if the control channel positions between different devices are not aligned, control channel interference may occur.
Based on cross-link (where cross-link interference includes data channel, and/or control channel) interference analysis and faced problems in different scenarios, the present invention provides a method of reducing or attenuating control channel interference, and/or data channel interference. The specific method comprises the following steps:
The method comprises the following steps: control channel location alignment method. Preferably, the fixed control channel location may be static or semi-static in configuration.
As shown in fig. 7, the control channels between different nodes are aligned, and the nodes may be nodes under the same operator, or nodes under different operators, or nodes in the same system, or nodes in different systems.
As can be seen from fig. 7, the use of a fixed control channel approach or (all, or part of) a control channel location alignment approach between devices may reduce or mitigate control channel interference to some extent. Meanwhile, the important control signaling can be transmitted on the fixed control channel to a certain extent, so that the problem of important control information loss is reduced. However, this approach has a problem that when there is a control channel transmission requirement on the resources between the control channels, the problem of control channel interference on the dynamic resources and/or the problem of cross link interference caused by the different directions of the data channels needs to be further solved.
Optionally, the fixed control channel location transmits relatively important control information, for example, a continuous occupied time length, a time domain structure (may also refer to a time domain structure between two control channels), a CCA location, a CCA type, a time domain and/or frequency domain resource occupied by the CCA, scheduling information (for example, uplink, or downlink, MCS, modulation mode, HARQ ID, RV version, TBsize), HARQ/scheduling timing, a location of a control channel, a time domain and/or frequency domain resource of a control channel, and a time domain and/or frequency domain resource occupied by a data channel. Alternatively, the time interval between fixed control channels is relatively long.
Further, the fixed control channel method may be extended to a method of a fixed resource, on which data and/or reference signals and/or control channels and/or PRACH channels may be transmitted.
The second method is as follows: a perceptual approach is employed to reduce control channel interference and/or data channel interference.
And a third method: a coordination approach is employed to reduce control channel interference and/or data channel interference.
The method four: the control channel resource method is reserved to reduce control channel interference and/or data channel interference.
And a fifth method: the two-steps scheme, or the multi-steps scheme, reduces control channel interference and/or data channel interference. the wo-steps scheme, or alternatively, the multi-steps scheme, has the main idea of determining the attributes, and/or structure, of a resource step by step through each step.
The two-step method is as follows: the control channel and/or the data channel is/are indicated by the first step, and the secondary indication information, such as the transmission time length and/or the reservation structure between fixed control channels and/or the control channel position and/or the uplink scheduling information and/or the downlink scheduling information and/or the modulation coding and/or the CCA type and/or the CCA position and the HARQ/scheduling timing, etc., is sent by the control channel determined by the first step.
The above methods, and/or combinations thereof, will be described in detail in the following examples.
Example 3
The present embodiment presents a method by resource alignment (which may also be referred to as fixed resources). Wherein the resource may be for at least one of: control channels, data channels, reference signals, system information, PRACH related information, etc. Wherein the reference signal comprises one of: CRS, DMRS, MBSFN reference signal, PRS, DRS, SRS. A system message comprising at least one of: MIB, SIB, PBCH, etc. PRACH related information including at least one of: preamble, msg1, msg2, msg3, msg4. The method mainly ensures that information sent on specific resources is free from interference or reduces interference influence through a specific resource alignment mode among devices.
The resources in the resource alignment method described in this embodiment may be predefined, or semi-static configuration of higher-layer radio resource control RRC signaling, or dynamic indication of physical layer downlink control information DCI. Alternatively, the fixed resource locations may be patterned specifically in the time domain.
Alternatively, the resource pattern, or the resource location, may be determined by at least one of the following parameters; start position, offset, interval, period T, time domain resource size, frequency domain resource number. Wherein the starting position, offset, or interval, or period T may be the time domain, and/or the frequency domain. In the time domain, for the starting position, the offset, or the interval, or the granularity of the period T may be an OFDM symbol, a slot, or a mini-slot, or a subframe, or a radio frame, or a transmission period, or a shared period, or a transmission unit, or a time region. In the frequency domain, for the starting position, the offset, or interval, or granularity of the period T may be RE, or RB, or RBG, or subband. The offset may be relative to the time domain resource or, alternatively, the frequency domain resource amount. The time domain resource size refers to the resources occupied by the resources aligned among different devices. Several typical resource patterns are listed below: FIG. 8 is a schematic diagram of the same resource size and equal intervals between resources. Fig. 9 is a schematic diagram of a fixed uplink control channel and a downlink control channel. FIG. 10 is a diagram of resource locations for dual interval and/or dual resource sizes.
Alternatively, the spacing between different resources may be relatively large. Alternatively, the resource may be obtained by at least one of the following, or, a resource pattern, and/or, a parameter used to construct the resource pattern, and/or, a resource pattern index number, and/or, a resource usage: predefined, or higher layer radio resource control RRC signaling semi-static configuration, or physical layer downlink control information DCI dynamic indication. The resource pattern index number refers to a predefined resource pattern set, and marks each resource pattern in the set with a label. The device can obtain which resources are available fixedly according to the obtained resource pattern label. Resource usage refers to what information transmission a configured fixed resource may use for, or what type of information transmission. The information may be at least one of: control channels, data channels, reference signals, system information, PRACH related information, etc.
The following is a further way of determining the location of the control channel, and/or the data channel, including one of:
mode one: at the time interval, or at a specific location within the time zone.
Wherein, the time interval, or, the time zone, may be at least one of: the system comprises a wireless frame, a subframe, a time slot, a mini-slot, a scheduling unit, an area formed by x OFDM symbols and an area formed by one of y types. The specific position is the position of the time interval, or the beginning, or the end, or the offset of the time domain interval.
Mode two: the control channel and/or the data channel location are determined by parameters. The parameters include at least one of: offset, interval, period T, time domain length, frequency domain resource number. The control channel and/or data channel location, or the control channel pattern and/or data channel pattern, may be determined by at least one of these parameters.
Wherein the offset, or interval, or period T may be the time domain, and/or the frequency domain. In the time domain, for the offset, or interval, or granularity of the period T may be an OFDM symbol, slot, or mini-slot, or subframe, or radio frame, or transmission period, or shared period, or transmission unit, or time region. In the frequency domain, the granularity of the period T may be RE, RB, RBG, or subband for the offset, or interval, or period. The offset may be relative to the time domain resource or, alternatively, the frequency domain resource amount. The time domain length may refer to the number of resources occupied by the control channel and/or the data channel.
Mode three: control information and/or data is transmitted at a particular location within the time window.
Resources within the time window may be used for control information and/or transmission of data. The resources used to transmit control information within the time window may be continuous or discrete, where the resources may be fixed locations or locations determined based on measurements or sensing results. The resources within the time window may be determined by at least one of the following parameters: offset, interval, period, size of resources, number of resources. Different devices, or devices in different operators, configure the same location, or different locations, within the time window. Similarly, different devices (macro base station, micro base station, or terminal) in the same operator, or devices (macro base station, micro base station, or terminal) in different operators, may configure the same time window location. Fig. 11 is a schematic diagram of discrete resources within an aligned or fixed time window, and fig. 12 is a schematic diagram of continuous resources within an aligned or fixed time window.
Mode four: and determining a control channel and/or a data channel resource and/or a position by using the bitmap.
For example, bitmap indicated as 101010,1 indicates a control channel, and/or a data channel position, 0 indicates no control channel, and/or a data channel position. Alternatively, 0 may also be assigned to indicate no control channel, and/or the number of resources of the data channel. The different locations of 0 may indicate different indications of no control channel and/or the number of resources of the data channel. The resource may be an OFDM symbol, a slot, or a mini-slot, or a subframe, or a radio frame, or a transmission period, or a shared period, or a transmission unit, or a time region.
In the method, the control channel and/or the data channel resource (time domain and/or frequency domain) and/or the position, or the parameters forming the control channel and/or the data channel resource (time domain and/or frequency domain) and/or the position, or the time window, or the parameters forming the control channel and/or the data channel resource (time domain and/or frequency domain) and/or the position in the time window, or the information such as bitmap and the like can be determined by static configuration or semi-static configuration.
The static configuration may be predefined, or a pre-agreement between stations, or a pre-agreement between terminals, or an agreement between a station and a UE.
The semi-static configuration may be a higher layer RRC signaling configuration. I.e. by adjusting the fixed control channel once over a period of time, and/or the data channel position.
The fixed control channel, and/or data channel location, and/or control channel, and/or time domain pattern of data channel, and/or frequency domain pattern may be Cell-specific, or UE-specific, or Group-specific, or common.
Further, the method of fixing the control channel and/or the data channel location is specified by different scenarios, or different traffic types, etc.
For the same operator, how to realize the adoption of fixed control channels among different cells under the same base station, and/or a method for controlling the positions of the control channels to solve the control channel interference and/or the data channel interference. I.e. the base station may broadcast a fixed control channel and/or data channel location information to the following cells; alternatively, the fixed control channel and/or the data channel position, or the parameters forming the control channel and/or the data channel position, or the time window information and/or the parameters for transmitting the control information and/or the data channel can be interacted or notified between different cells through an X2 port, or OTA (Over To Air) mode.
For the same operator, how to implement the method of using fixed control channel and/or control channel position between different base stations to solve the control channel interference and/or data channel interference. I.e. the information of the fixed control channel and/or the data channel position is sent between different base stations via the X2 port, or, the OTA, to the surrounding base stations. Alternatively, priorities between base stations, or traffic type priorities, may be defined to determine control channel, and/or data channel locations.
For different operators, different control channels, and/or data channel locations, and/or time domain patterns of data channels, and/or frequency domain patterns may be configured. Alternatively, CCA detection, or signal detection, may be performed prior to transmission on a fixed control channel location to determine whether a channel is available.
For the terminal, a fixed uplink control channel position and/or a time domain pattern, and/or a frequency domain pattern, and/or a data channel position and/or a time domain pattern, and/or a frequency domain pattern of a data channel are obtained, where the manner of the frequency domain pattern may be that a base station indicates through a physical layer DCI signaling, or the base station and the UE agree in advance, or predefined, or a higher layer RRC signaling configuration.
Alternatively, if the transmitting device performs continuous transmission, a fixed control channel, and/or a data channel resource is encountered in the middle of continuous transmission, or the fixed control channel, and/or a data channel location may be muted, or control information may be sent, and/or data co-directional with the fixed data channel resource may be sent at the data channel location, or the fixed control channel, and/or the data channel location may perform CCA detection, or interference measurement.
Example 4
The present embodiments provide a method for implementing control channel and/or data channel interference cancellation and interference avoidance by a perceptual approach.
The sensing method mainly comprises one of the following steps:
the method comprises the following steps: based on the perception of energy.
The energy sensing method is that the device compares the received signal energy from the surrounding devices within a certain period of time with a threshold value according to the value obtained by a specific operation, so as to judge whether the current channel is idle. Wherein the specific operation may be an accumulation operation or, alternatively, accumulation and multiplication by a factor. For beamforming, the factor may be the transmit beam weight of the (performing sensing) device or the receive beam weight of the device. The threshold value may be one or more. The threshold value may be predefined, or negotiated between devices, or higher layer RRC signaling configuration, or physical layer DCI signaling indication.
Optionally, the method for judging whether the channel is idle based on the energy sensing method comprises one of the following steps:
(1) the detected/perceived signal energy is greater than a first threshold, the channel is deemed busy. Conversely, if the detected/perceived channel energy is less than and/or equal to the first threshold, the channel is deemed to be idle.
(2) The detected/perceived signal energy is greater than a first threshold, and optionally, the channel is considered idle when the detected/perceived signal energy is less than a second threshold. In this case, it may be because the current channel is occupied by the system, or, with devices in the cell, so that it can be multiplexed for transmission together; otherwise, if the detected/perceived signal energy is smaller than the first threshold value, the channel is considered to be idle. Similarly, if the detected/perceived signal energy is greater than the second threshold, the channel is deemed busy or otherwise unavailable.
The second method is as follows: a signal detection method. For a perceived device, channels transmitted by other devices, and/or signals, may be detected while channel perception/detection is being performed. The channel and/or the signal is mainly used for sensing or detecting whether the device is used for identifying whether the channel is available or whether the channel is uplink or downlink information or whether the channel is orthogonal multiple access or whether the channel is co-channel or adjacent channel is co-system. The purpose is to identify whether the signal is a own cell or not, or a signal sent by a system device or by a device under the same operator.
Alternatively, the same system, or the same operator, or different cell configurations under the same base station may configure the same channel for detection, and/or signal, or the same signal, and/or channel pattern. The pattern is sparse in the frequency domain. The signal may be a Preamble or a reference signal (as described in the previous embodiment with reference to the previous embodiment). The channel may be a control channel, and/or a physical layer shared channel, etc.
And a third method: energy sensing, and signal detection. For example, if the signal energy is detected to be greater than the set threshold value through energy sensing, the device may further determine whether the current channel is available through a signal identification method. The signal identification may be by parsing the received signal, or by time domain and/or frequency domain patterns of the received signal, etc.
Taking the various scenarios described in embodiment 2 as examples, a perceived approach is employed to solve or reduce the control channel interference and/or data channel interference problems.
For scenario 1, as shown in FIG. 1. The device performs an energy-aware operation prior to the actually transmitted resource and considers the channel to be idle if the perceived signal energy is less than and/or equal to a first threshold. Based on this, the device may be an occupied channel for transmission, and the time domain transmission structure in the transmission period may be determined by the device according to its own service requirement and/or interference measurement indication information. The interference measurement indication may be a high interference indication, or an overload indication, etc. A channel is considered available if the perceived signal energy is greater than or equal to a first threshold but less than or equal to a second threshold. Channel availability in this case means that the channel is being used by the same system device or by devices under the same operator, within a certain allowed interference range, although the channel interference is large. If the perceived signal energy is greater than or equal to the second threshold, the channel is considered busy (or no transmission is performed).
Optionally, the device transmits directly on the resource after perceiving that the channel is idle. Or alternatively, the process may be performed,
optionally, after sensing that the channel is idle, the device may first send some sensing signals for signal identification under the same system, or under the same operator, or under different cells under the base station. Furthermore, the actual transmission may take place after the perceptual signal. Wherein the signals to be perceived are sparsely patterned in the frequency domain and/or the perceived signals transmitted with the system or with different devices under the same operator are aligned with each other in the frequency domain.
Based on this, in order for the device to perceive before transmission, a specific resource needs to be reserved or left empty. Preferably, the starting position of the specific resource, and/or the time domain length, and/or the size of the specific resource, or the offset from the actual transmission, may be indicated by a higher layer RRC signaling, or a physical layer DCI signaling, or predefined, or implicitly determined. The implicit determination is by the time domain length of the specific resource and/or the size, and the actual transmission position. Alternatively, the specific resource location may be dynamically changed according to fixed and/or uplink and downlink traffic demands. The specific resource may be composed of j OFDM symbols or less than one OFDM symbol length. j is a positive integer greater than and/or equal to 1.
For at least one of cases 1 to 3 in scenario 2, fig. 2 to 4 are corresponded. As can be seen, in the same time region, one device transmits a control channel and another device transmits a data channel, which can create a control channel interference problem. Preferably, the perceived operation location performed by the different devices transmitting the control channel is different from the location of transmitting the data channel at the same time. Further, the reliability requirement for the control channel is relatively high, and therefore, the priority of the control channel is high compared to the data channel.
Based on this, to reduce interference, one of the following may operate:
mode one: the sensing operation is performed prior to the actual transmission. The sensing method is the same as that described in this embodiment.
Mode two: before the actual transmission, sensing is performed. If the perceived channel is idle, the actual transmission is directly performed. Or after detecting that the channel is idle, notifying surrounding equipment of the duration of the channel occupation, and/or adopting numerology parameters, and/or occupying the time domain in the channel time, and/or a frequency domain transmission structure, and/or the attribute of the resources in the transmission structure. Alternatively, an indication signal is sent after detecting that the channel is idle.
Mode three: before the actual transmission, a sensing signal or an indication signal is forcibly transmitted. Wherein the perceived signal is sparsely patterned in the frequency domain and/or the perceived signals transmitted with the system or with different devices under the operator are aligned with each other in the frequency domain.
Alternatively, to further circumvent the interference, one device may send control and another device send data at the same time, and different perceived locations of the control channel and the data channel may be configured. As described in at least one of fig. 2 to 4, the blank resources for control channel sensing are placed before the control channel location, and the sensing of the data channel may be located in whole or in part in the region overlapping the control channel.
Alternatively, a device may free or blank resources overlapping a control channel if alignment of the data channel with the control channel of another device, or coincidence, or interference, occurs during the device's transmission period. Alternatively, the transmission power is reduced. Or, according to the priority, determining that the data channel transmission is avoided, or the data channel transmission power is reduced, or the device transmission of the control channel is avoided. The priority may be a priority of different traffic types, or a priority of different devices, or a priority of different signals/channels. Alternatively, for devices transmitting data, sensing needs to be performed at or before the location overlapping the control channel. Preferably, the threshold value adopted by the device sending the data channel to perform sensing is different from the threshold value adopted by the device sending the control channel to perform sensing. Alternatively, the device transmitting the data transmits an indication signal in advance, or a notification for notifying the surrounding devices to transmit the data in a certain time zone. Or the equipment for transmitting the data interacts with surrounding equipment for a period of time to transmit the structure and/or the information such as the attribute of the resource in the transmission structure, so as to acquire whether the interference is caused, coordinate the interference and reduce the interference opportunity.
For scenario 3, which is described in fig. 5 as the case of inter-device multiplexing for different numerologies, one typical scenario is URLLC multiplexed with eMBB. When there is a transmission request, the URLLC directly transmits the request. And an eMBB needs to perform a sense operation before transmission or an eMBB empties the resource location of the URLLC transmission. The eMBB may identify signals sent by the URLLC device. Preferably, the device may send a specific signal according to the same numerology parameter for identification by other devices before actually sending. While in actual active transmission, the devices may send in accordance with each other's own numerology parameters.
For a dynamic TDD system, due to dynamic changes in uplink and downlink traffic, control channel interference and/or data channel interference may occur when different devices transmit simultaneously on the same frequency band. Based on this, in the NR frame structure, certain resources need to be reserved or set aside before the data channel and/or control channel resource locations. This particular resource may be used for the device to make interference measurements prior to the control channel and/or data channel being transmitted, or channel busy state awareness. Wherein interference measurement refers to measuring the surrounding interference level. Wherein the interference measurement may be RSRP, or RSSI, or DMRS, or the like, optionally, the base station, and/or the terminal may determine whether transmission using the channel is possible through an interference excess indication, or a high interference indication, or the like.
Optionally, the interference situation of the channel is detected by a perceptual method. Wherein, the sensing method comprises the following steps: the CCA detection is evaluated by a clear channel, or an interference source is judged by a signal identification mode, for example, whether the interference source is system interference or not, or interference with an operator is generated, and the like.
The specific resource (the specific resource may be a time domain, and/or a frequency domain), a start position, and/or an end position, and/or a resource size, and/or a time domain in which sensing or interference measurement is performed, and/or a frequency domain position may be indicated by physical layer DCI signaling, or higher layer RRC signaling, or predefined, and/or a base station and a UE agree in advance.
Alternatively, the perceived location, or the signal for interference identification, may be Cell-specific, or UE-specific, or group specific, or common. The specific resources may be: mini-OFDM symbols (which may be understood as insufficient OFDM symbol length), or OFDM symbols, or slots, or mini-slots, or subframes, or various combinations thereof. The slot, or mini-slot, is a positive integer not greater than a particular value. The specific value may be a physical layer DCI signaling indication, or a higher layer RRC signaling indication, or predefined, and/or a base station and a UE agreed in advance. Preferably, the specific values may be 1,2,3,4,5,6,7,8,9, 10, etc.
Optionally, the same perceived time domain, and/or frequency domain location, may be configured with devices under the same operator. Different operators or devices in different operators configure different perceived time domains, and/or frequency domain locations.
Optionally, the device sends an indication signal/information when the channel is idle in the perceived time domain and/or when the frequency domain location detects the channel idle. The indication signal/information is used to inform surrounding devices about channel occupancy. The indication information may include at least one of the following: the time duration of the occupied channel, the time domain structure, the control channel position, whether the occupied signal is sent in the perceived time domain and/or the frequency domain position, and/or the reserved signal, etc.
Optionally, for the transmitting device, the perceived time domain, and/or the frequency domain location may perform the following: sensing is performed, either an occupancy signal or a reservation signal is sent, or no operation is performed, or the sensed resource is left empty or muted.
Optionally, in the case of not configuring the perceived time domain and/or the frequency domain position, the device performs the perceived operation when there is a service requirement or information such as a scheduling request. Wherein the device transmits any signals and/or the channel may have previously performed a sensing operation.
Example 5
The present embodiment provides a method for implementing interference cancellation and interference avoidance through coordination.
Control channel interference and/or data channel interference is achieved by inter-device coordination. The specific coordination method or process comprises the following steps:
for the device to be transmitted, before transmission, the device informs the surrounding device of the information such as the self numerology parameter, and/or the transmission time domain structure, and/or the transmission start position, and/or the transmission end position, and/or the duration of the occupied channel, and/or the fixed resource position, and/or the interval between the fixed resources, and/or the fixed resource pattern index, and/or the transmission time domain structure index, and/or the information of performing the sensing position information (such as the start position, the time length, the end position, the interval between the sensing resources, for example, performing sensing), the interference measurement information, and the like.
Optionally, the surrounding device receives the information notified by the originating device, and may coordinate or adjust its own transmission process according to the information. For example, adjusting the transmission power; or, according to the transmission information of the originating device, the transmission channel type of the originating device on the collision or interference resource is adjusted, and/or the transmission direction (that is, the information and/or the signal and/or the channel type transmitted on the same resource are the same, and/or the transmission direction is the same). Wherein, the information type includes: control channel, data channel, system information, reference signal. Transmission direction, comprising: mixing the uplink, the downlink and the uplink and the downlink; or, the resource which is interfered or conflicted with the originating equipment is left empty; preferably, for devices with large interference from the originating device, the above adjustment or coordination scheme may be employed.
Alternatively, the surrounding devices may receive the information notified by the originating device, or may not process the information. Optionally, the sensing operation is performed before the transmission takes place. The aim is to reduce interference between devices.
Optionally, at flexible resource locations, different devices, and/or different traffic, and/or different channels, and/or different signals have equal competing priorities, or different priorities.
Alternatively, the resource information to be aligned can be determined by negotiation between different devices, which has the advantage that important information can reduce the interference probability to some extent. Without negotiating the determined resources, different devices may fairly compete for usage, e.g., by performing a sensing scheme. Alternatively, the different devices determine whether the current resources, or resources over a period of time, can be used by measuring the interference.
Optionally, interference measurement and/or interaction related information can be performed periodically between different devices, and/or information interaction can be performed through triggering conditions, and/or interference measurement can be performed.
Optionally, information interaction is performed, and/or resources for performing interference measurement may be predefined, or physical layer DCI signaling configuration, or higher layer RRC signaling configuration, or negotiation between devices is determined, and/or a base station and a terminal negotiate or agree on each other.
Alternatively, the interference measurement may be performed at the base station side and/or may also be performed by the terminal.
In particular, in this embodiment, the control channel position and/or the data channel position are negotiated between different base stations, or between different operators, or between different cells under the same base station, or between different terminals, so as to achieve the purpose of reducing or solving the control channel position and/or the data channel interference.
Alternatively, the channel location, or the data channel direction (uplink, or downlink, hybrid type (including at least one of uplink, downlink, gap, uplink control, downlink control), or the transmission signal type may be coordinated in a priority manner, or the priority of different traffic, or the priority of different base stations, or the priority of different operators, or the priority of different channels, and/or signals, or the priority of different Wi-systems (e.g., LTE, NR, fi, D2D, V2X, etc.).
Alternatively, if different traffic types (e.g., emmbb and URLLC, mctc), or different signal/channel types, or different transmission signal types, or different systems transmit on the same resource, the occupancy of the resource may be determined according to the priority. Alternatively, a sensing operation may be performed, where different priorities correspond to different LBT types, or sets of LBT parameters, or time duration occupied, or beam directions (different channel states corresponding to different beam directions), or time and/or frequency domain resource structures. The contention window configured in sequence from high priority to low priority is enlarged, and/or the random back-off value is enlarged, and/or the parameter m of the delay period is enlarged, and/or the occupied duration is reduced or reduced, and/or the beam direction is bad, and/or the time and/or frequency domain resource structure is flexible or small.
Alternatively, the interference condition may be determined according to RRM measurement, or CSI-IM, or DMRS, or RSRP, or RSSI measurement, or CCA detection, so as to coordinate the control channel position, and/or the data channel position.
Example 6
The present embodiment provides a method for implementing interference cancellation and interference avoidance by reserving resources.
The method of reserving resources is to reserve or silence specific resources for transmitting control information and/or specific system information or data. The reserved resources may be fixed or may be dynamically variable. The manner in which the resources are reserved for a fixed time may be determined by predefined. The dynamic determination of reserved resources may be physical layer DCI signaling or higher layer RRC signaling indication. Wherein, for the control information, and/or specific system information, or, the data may configure different reserved resource positions, or, the reserved resources are not limited in information type. Wherein the control information includes: uplink control information (e.g., ACK/NACK, etc.), and downlink control information (uplink or downlink grant, scheduling information, etc.). The system message includes: MIB, SIB, PRACH, DRS, etc.
Alternatively, the reserved resource information may be interacted, or shared, between base stations, or between UEs, or between a base station and a UE.
Example 7
The present embodiments provide a method for implementing data channel interference cancellation and/or control channel interference cancellation by two-steps or multi-steps methods.
This scheme is illustrated in the two-steps method:
The first step: and acquiring first-level resources through the first-level indication information. The primary indication information may be higher layer RRC signaling, or physical layer DCI signaling, or a predefined manner. Wherein, the first level resource may be dynamically configured, or statically, or semi-statically adjusted. Alternatively, the first level resource may be a single resource, or a plurality of resources. The plurality of resources form a resource pattern, and the resource pattern is the first-level resource. At least one of the following may be sent on the first level resource: control channels, data channels, reference signals, system information, PRACH related information, etc. Wherein the reference signal comprises one of: CRS, DMRS, MBSFN reference signal, PRS, DRS, SRS. A system message comprising at least one of: MIB, SIB, PBCH, etc. PRACH related information including at least one of: preamble, msg1, msg2, msg3, msg4.
And a second step of: and indicating through the second-level indication information, or adjusting the transmission structure of the resources between the first-level resources, or the resources except the first-level resources in a certain time area after the indication information, and/or the second-level resource position information in the resources, and/or the resource position information for executing the sensing operation, and/or the resource position information for interference measurement, and/or the scheduling/HARQ timing information, and/or the uplink scheduling information, and/or the downlink scheduling information. The resource transmission structure in the resource comprises: data channel location, or control channel location, or perceived location, or various combinations thereof. Wherein, the combined structure can comprise at least one of the following components: data channel location, control channel location, perceived location. One or more data channel resources, and/or control channel resources, and/or perceived resources, and/or various combinations thereof may be included in a transmission structure. Alternatively, the transmission direction of the resource at the data channel location may be fixed, or may be non-fixed, i.e. dynamically variable, or may not perform uplink, and/or downlink transmission properties. Wherein the data channel may be: an uplink data channel, or a downlink data channel. The control channel may be: an uplink control channel or a downlink control channel.
Alternatively, the multi-step scheme may be understood as that the previous-stage information indicates or adjusts the transmission structure of the previous-stage resource, or the resource except the previous-stage resource, or the dynamic resource except the previous-stage resource in a certain time area after the indication information, and/or the position information of the next-stage resource in the resource, and/or the position information of the resource for performing the sensing operation, and/or the position information of the resource for interference measurement, and/or the scheduling/HARQ timing information, and/or the uplink scheduling information, and/or the downlink scheduling information.
Optionally, for each level of resources, special specific information may be sent on the resources, or a transmission structure on the resources may be determined according to a specific rule, and/or specific resource location information in the resources, and/or resource location information for performing a sensing operation, and/or resource location information for interference measurement, and/or scheduling/HARQ timing information, and/or uplink scheduling information, and/or downlink scheduling information.
The two-steps scheme will be exemplified below, and the multi-steps scheme can be obtained by analogy with the two-steps scheme.
Example 1 (mainly describing the first level resource determination procedure, and/or the handling manner of the case where the first level resources of different devices are not aligned): the primary indication information indicates primary resource location information. The primary indication information may be static or semi-static configured or indicative or adjustment of the primary resource location. If the first level resources are dedicated to transmitting control channels/information, the first level resources may be shared between different devices, or different first level resources may be configured between different devices, or the same first level resources. Optionally, when the first-level resources are not aligned between different devices, the first-level resource positions which are not aligned or interfere are left unordered. Alternatively, the sensing operation is performed before the unaligned or disturbed first level resource locations. Alternatively, the sensing operation or interference measurement is performed on some or all of the resources in the unaligned or interfering first level resource locations. The above can be shown in the following figures. Fig. 13 is a schematic diagram of first level resource alignment between different devices, where the first level resources are control channel resources.
Fig. 14 is a schematic diagram of a first level of resource overlap between different devices. For device a, the control information may be sent directly on the first-level resource, or the sensing operation may be performed before the control information is sent on the first-level resource, where the control information is sent on the first-level resource when the sensing channel is idle. Or, performing a sensing operation before the control information is sent on the first-level resource, sending a signal or a channel for sensing in the case that a sensing channel is idle (the sensing signal/channel sending position can be on the first-level resource, or sensing the channel idle time to the first-level resource position, or sensing the channel idle time to the resource between fixed channel positions in the first-level resource position), and then sending an actual control channel. Alternatively, device a vacates the resources overlapping the device B control channel and device B vacates the resources overlapping the device a control channel. Alternatively, device B and device a interact with the first level resource locations, adjusting such that the first level resource locations are aligned. The interaction information may be performed before the earliest first level resource point in time. The resource location of the interaction information may be said to be a dynamic indication of the physical layer DCI signaling, or a static or semi-static indication of the higher layer RRC signaling, or a predefined indication. Alternatively, if device B transmits data at a location that is not aligned with the device a control channel, device B may adjust (e.g., reduce) the transmit power of the data channel. The same procedure is also true for device a.
FIG. 15 is a schematic diagram of first level resource non-overlapping between different devices. For device a and/or device B, the control information may be sent directly on the first level resource, or a sensing operation may be performed before the control information is sent on the first level resource, where the control information is sent on the first level resource if the sensing channel is idle. Or, performing a sensing operation before the control information is sent on the first-level resource, sending a signal or a channel for sensing in the case that a sensing channel is idle (the sensing signal/channel sending position can be on the first-level resource, or sensing the channel idle time to the first-level resource position, or sensing the channel idle time to the resource between fixed channel positions in the first-level resource position), and then sending an actual control channel. Alternatively, device a vacates the resources overlapping the device B control channel and device B vacates the resources overlapping the device a control channel. Alternatively, device B and device a interact with the first level resource locations, adjusting such that the first level resource locations are aligned. The interaction information may be performed before the earliest first level resource point in time. The resource location of the interaction information may be said to be a dynamic indication of the physical layer DCI signaling, or a static or semi-static indication of the higher layer RRC signaling, or a predefined indication. Alternatively, if device B transmits data at a location that is not aligned with the device a control channel, device B may adjust (e.g., reduce) the transmit power of the data channel. The same procedure is also true for device a.
Example 2: based on example 1, it is further illustrated how data channel interference and/or control channel interference on resources outside of or between first level resources can be reduced between devices.
First case: the control information sent on the control channel on the first level resources indicates second level resource location information between the first level resources, e.g., offset from the first level resources, and/or interval, and/or second level resource size, and/or scheduling/HARQ timing relationship. Possible secondary indication steps will be explained below based on fig. 13, as shown in fig. 16, for indicating the secondary resource among the resources between the primary resources by the primary resource. For fig. 16, device a and device B may indicate a second level resource location, or a second level resource pattern location, or a second level resource location indicated at a first level resource between different devices, or the second level resource pattern location is the same, respectively. For the former (structure shown in fig. 16), after the first-level resource, the device performs a sensing operation, or, interference measurement, and when a device senses that a channel is idle, or, a device with a measured interference level not greater than a threshold value may use a dynamic resource, a resource attribute on the dynamic resource, or, a transmission structure is determined by a device that senses success; or after the first-level resource, the device has priority according to the service type, or the priority of the device, or the priority of the channel and/or the signal, and the device with high priority has the use right of the dynamic resource. The dynamic resource can be between the first-level resource and the second-level resource, or between the first-level resource and the first-level resource, or between the second-level resource and the second-level resource, or a resource in a certain time period after the first-level resource; alternatively, the device may perform channel sensing, or interference measurement, before the second level resources. For the latter (structure shown in fig. 17), after the first level of resources, the device performs a sensing operation, or, interference measurement, and when a device senses that a channel is idle, or, a device with a measured interference level not greater than a threshold value may use dynamic resources, a resource attribute on the dynamic resources, or, a transmission structure is determined by a device that senses success; or after the first-level resource, the device has priority according to the service type, or the priority of the device, or the priority of the channel and/or the signal, and the device with high priority has the use right of the dynamic resource. The dynamic resource can be between the first-level resource and the second-level resource, or between the first-level resource and the first-level resource, or between the second-level resource and the second-level resource, or a resource in a certain time period after the first-level resource; alternatively, the device may perform channel sensing, or interference measurement, before the second level resources. Preferably, for the case that the second-level resources are not aligned between different devices, the second-level resource positions that are not aligned may be left unoccupied, or a sensing operation is performed before the second-level resources, or interference measurement is performed, or the devices reduce the power of a transmission signal on the aligned resources, or second-level resource position information is interacted between the devices, so as to coordinate the second-level resource positions between the different devices. Depending on the information interacted, the device may not transmit information on resources that collide or interfere with the second level resources, or the device may perform a sensing operation or an interference measurement operation on the first level resources, and the actual control channel signal may be transmitted on the remaining resources in the second level resources.
Second case: the control information sent on the control channel on the first level resource indicates a transmission structure between the first level resources, for example, a data channel+gap+control channel, optionally, a transmission direction of the data channel may be explicitly indicated, or the data channel transmission direction may not be indicated, only the resource is indicated to be used for data channel transmission, a specific transmission direction on the data channel may be through a sensing operation before the data channel resource, or a transmission direction between devices may be coordinated or interacted (wherein, for devices with opposite transmission directions, information such as a scheduling direction or a scheduling/HARQ timing relationship, MCS, RV, HARQ process number, etc.), or transmission power between devices is reduced, or the data channel resource transmission direction is determined or coordinated according to priorities (priorities include at least one of device priorities, different traffic type priorities, different channel/signal priorities, different operator priorities). For devices transmitting different transmission directions or transmission structure types on the data channel resources, the resources corresponding to the idle different transmission directions are utilized. Alternatively, a combination of the above methods is employed. For the case of explicitly indicating the transmission direction of the data channel, the usage rights of the data resources may be determined by sensing or in a prioritized manner between different devices. In addition, the control channel processing mode is the same as the data channel processing mode. The control channels are also divided into uplink control channels and downlink control channels. Optionally, multiple sets of feedback information may be transmitted on the uplink control channel, and only information transmitted in the previous time may be fed back. Similarly, one control signaling or multiple sets of control signaling may be indicated on one uplink control channel. The information carried by each set of control signaling may be the same or different.
Alternatively, the same transmission structure may be adopted for different devices, or different transmission structures may be adopted, and when transmitting according to different transmission structures, the devices may interact with each other to form a transmission structure, or sense data channels and/or control channels in the respective transmission structures, or empty unaligned data channel resources and/or control channel resources, or reduce unaligned data channels and/or transmit power on the control channel resources.
Alternatively, the transmission structure may be determined by controlling the control information (e.g., scheduling/HARQ timing relationship) sent on the channel on the primary resource.
Second level resource location information, e.g., offset from the first level resource, and/or interval, and/or second level resource size, and/or scheduling/HARQ timing relationship.
Preferably, the two-step scheme is illustrated above by way of example only with control channel signals sent on the first level resources. The method for transmitting other information on the first-level resource is the same as the method above, or a similar method is adopted.
Preferably, the above only exemplifies the resource allocation situation between the first level resources, but for a period of time after the first level resources.
Preferably, for the case that the data channel resource overlaps with the data channel resource, the device may perform precoding operation on the data and null channels, respectively, and may spatially coordinate to reduce interference of the control channel to the data channel, or interference of the data channel to the control channel.
Further, when the second-level resource is a control channel, the method and the processing method for the first-level resource as the control channel can indicate the resource allocation condition on the subsequent resource through the control signaling on the control channel on the second-level resource.
Optionally, the first-level resource, and/or the second-level resource, and/or the …, and/or the kth-level resource may be a control channel resource, and may also be a data channel resource, where, for the case of the data channel resource, the transmission direction of the device on the data channel may be determined by performing a sensing operation before the data channel, or negotiating, or according to the priority. For devices with opposite transmission directions on the data channel, the resource position interfering with the device can be left empty, or the transmission power can be reduced or increased. Alternatively, the dynamic resources between the first level resources, and/or the second level resources, and/or the …, and/or the kth level resources may be equally operational aware, or negotiated, or channel usage determined based on priority.
Besides control channel resources and data channel resources, reference signals, system information, PRACH related information and the processing mode can be adopted.
The following may be used as a supplementary information.
The general scheme is as follows: the primary resource location is determined in a specific way in order to guarantee important control information, or system information, or data can be sent without interference, or sensing, or CCA, or measurements are performed. The second step is to indicate the resource allocation over the time interval on the primary resource. The primary resources may indicate resource allocation conditions between primary resources, or indicate resource allocation conditions in a specific time interval after the current primary resource. The resource allocation case includes one of the following: data channel, control channel, time interval, blank resources. The control channel is divided into an uplink control and a downlink control. The data channels are divided into upstream and downstream. Further expanding, the interference problem can be solved by a multi-level scheme.
The two-steps scheme is described in detail below in different cases.
Mode one: the fixed resources are configured in a static or semi-static manner, and indication information is sent on the fixed resources to indicate the resource configuration between the fixed resources, as shown in fig. 18. Or for indicating the resource configuration over a certain time as shown in fig. 19. This is to eliminate or account for control channel interference and/or data channel interference generated between fixed resources or on resources over a period of time.
(1) When the fixed position is the control channel position, the control signaling sent on the control channel is used to indicate the resource allocation condition of the blank resources between the fixed resources.
Wherein the control signaling may be one of: DCI formats 0, 0A, 0B, 1A, 1B, 1C, 1D, 2A, 2B, 2C, 2D, 3A, 4A, 4B. The resource allocation situation on the blank resource includes at least one of the following: uplink resources, downlink resources, gap, uplink control, downlink control. Optionally, at least one resource allocation case may be included in the blank resources. Alternatively, the gap may be used for up-down conversion, or for sensing, or performing CCA.
Optionally, the control signaling may also carry scheduling/HARQ timing information, which includes: a timing relation k1 between the downlink control and the downlink data, and/or a timing relation k2 between the downlink data and the uplink control, and/or a timing relation k3 between the downlink control and the uplink data. k1 The minimum value of k2, k3 is 0, and the maximum value may be a specific value M. M may be a positive integer, for example, 1,2,3,4,5,6,7,8,9, 10, etc. The granularity of the timing relation value may be an OFDM symbol, or slot, or mini-slot, or time interval, or scheduling unit, subframe, radio frame. Wherein the time interval may be a combination of the above granularity.
Alternatively, the control signaling may indicate a resource allocation time domain structure of a plurality of sets of blank resources, in addition to a resource allocation time domain structure of a blank resource.
Optionally, the time domain of the control signaling in the blank resource and/or the frequency domain resource position may be indicated in the control signaling. Alternatively, if the data direction on the blank resource is indicated on the fixed resource location control channel, the data direction may be adjusted by the secondary control channel. If the direction of data on the blank resources is not indicated on the fixed resource location control channel, the direction of the data resources may be determined by performing sensing or, alternatively, measuring to determine channel conditions. The data direction includes: upstream or downstream. Optionally, at a control channel location on a blank resource, other devices may send control information on the resource, or a blank or silent resource, or perform CCA detection.
Alternatively, the fixed resource location may be Cell-specific, or UE-specific level, or shared.
The above manner may also be applied to resource allocation on blank resources for a period of time.
(2) When the fixed resource is the position of the data channel and/or the downlink control channel, the control signaling sent on the downlink control channel is used for indicating the resource allocation condition of the blank resource. Wherein, the resource allocation condition comprises at least one of the following: downlink control channel, uplink control channel, data channel, uplink data channel, downlink data channel, gap.
(3) And when the fixed resource position is a sensing channel or the position of the measured interference, when the sensing is performed and the channel is detected to be idle or the measured interference level is smaller than a preset threshold value, determining the specific resource after the fixed resource as a control channel position or a data channel position. Optionally, the scheduling conditions between fixed resources, or for a period of time, or within an expected transmission, and/or the time domain structure, or secondary control channel location are indicated through the control channel.
Mode two: a control channel location and/or a data channel location is determined based on the execution perception result. Optionally, the scheduling conditions between fixed resources, or over a period of time, or within an expected transmission, and/or the time domain structure, or secondary control channel location, or data direction are indicated through a control channel. The location where sensing is performed may be any time, or may be determined by a scheduling request time, or may be determined by a packet arrival time.
Mode three: the fixed channel position and/or the data channel position are adjusted in a coordinated manner. Wherein, between cells, or between base stations and UEs, or between UEs and UEs, are notified on predetermined resources, or control channel positions are interacted, and/or transmission structures are interacted. After receiving the information sent by other devices, the information may not be sent at the fixed channel position of the opposite side, or silence, or perform CCA detection, or perform interference measurement, or send control information to adjust its own transmission structure, thereby implementing control channel interference and/or data channel interference cancellation. The predetermined resources may be time domain resources, and/or frequency domain resources, and/or spatial domain resources.
The secondary indication information may indicate or adjust a time length of transmission, and/or a reservation structure between fixed control channels, and/or a secondary control channel position, and/or uplink scheduling information, and/or downlink scheduling information, and/or modulation coding, and/or CCA type, and/or CCA position, HARQ/scheduling timing, and the like.
Based on the same inventive concept, an embodiment of the present invention provides an interference processing device, applied to the transmission apparatus described in the above embodiment, for implementing the method described in one or more embodiments.
As shown in fig. 20, the apparatus 200 includes: an acquisition unit 201 for acquiring first instruction information; a transmission unit 202, configured to perform transmission on a specific resource according to the first indication information.
In the present invention, the transmission apparatus acquires the first indication information by at least one of: and predefining physical layer downlink control information DCI signaling, higher layer radio resource control RRC signaling, and passing through an X2 port and an air interface.
In the present invention, the first indication information includes at least one of: uplink grant, UL grant, downlink grant, scheduling request, SR, transmission duration, control channel information, data transmission information, transmission time domain structure, scheduling information, scheduling/hybrid automatic repeat request, HARQ, timing relationship, numerology parameter, subframe type, time slot information, minislot information, subframe-to-time slot relationship, subframe-to-minislot relationship, time slot-to-minislot relationship, traffic type, reference signal information, system information, random access information, time gap information, measurement information, perceptually relevant information, signal information, adjustment power information, overhead resource information, resource allocation information, frame structure, carrier information, pattern index, dynamic resource information, fixed resource information, transmission time window information, beam information, transmit beam set, transmit beam pattern, receive beam set, receive beam pattern, beam forming weight, retransmission information, priority information, overhead resource indication information.
In the present invention, the control channel information includes at least one of: control channel position, control channel starting position, control channel resource interval, control channel resource size, control channel resource number, period, control channel pattern index number, uplink control channel, downlink control channel.
In the present invention, the first indication information carries control channel information, including: and acquiring the position of the transmission control channel through the control channel information.
In the present invention, the control channel location attribute may be at least one of: cell-specific, UE-specific, group-specific, common-specific.
In the present invention, the control channel locations are aligned and/or not aligned for different devices.
In the present invention, the transmission unit is further configured to at least one of: the transmission equipment sends second indication information on the control channel; acquiring the configuration condition of resources between the current control channel position and the next control channel position according to the second instruction; acquiring the configuration condition of the resources in a period of time from the current control channel position according to the second instruction; and acquiring the configuration condition of the resources in a period of time from the offset position according to the second instruction.
In the present invention, the second indication information includes at least one of: downlink control information, uplink grant, downlink grant, transmission time domain structure, control channel location, data channel location, gap location, scheduling information, perceived operation location, scheduling/HARQ timing relation, interference measurement information, null resource indication information, whether data channel location is a dynamic resource, whether transmission time domain structure is indicated, whether transmission direction of a data channel is indicated, scheduling request SR, transmission duration, data transmission information, numerology parameter, subframe type, slot information, minislot information, subframe-to-slot relation, subframe-to-minislot relation, slot-to-minislot relation, traffic type, reference signal information, system information, random access information, adjustment power information, null resource information, resource allocation information, frame structure, carrier information, pattern index, dynamic resource information, fixed resource information, transmission time window information, beam information, transmission beam set, transmission beam pattern, reception beam set, reception beam pattern, beam forming weight, retransmission information, priority information, null resource indication information.
In the present invention, at least one of the following operations may be performed between the control channel positions, or between the current control channel position and the next control channel position, or for a period of time from the current control channel position, or before transmission on the resource for a period of time from the offset position: sensing operation; interference measurement operations; interaction or negotiation operations; no operations are performed, directly transmitted on the resource; and transmitting according to the second indication information.
In the present invention, the performing a sensing operation includes at least one of: energy sensing operation, signal detection operation.
In the present invention, the energy sensing operation includes at least one of: if the detected/perceived energy is not greater than the first threshold value, judging that the channel is available; if the detected/perceived energy is greater than the first threshold value and not greater than the second threshold value, judging that the channel is available; if the detected/perceived energy is greater than the second threshold, determining that the channel is not available; if the detected/perceived energy is greater than the first threshold, it is determined that the channel is not available.
In the present invention, for the channel unavailable case, the transmission apparatus may perform at least one of the following operations: no transmission is performed; performing a signal detection operation; reduced transmit power operation; adjusting the transmission direction; the channel type is adjusted.
In the present invention, the signal detection operation includes: information carried in the received signal is identified, or a frequency domain pattern of the received signal is identified.
In the present invention, the carried information includes at least one of the following: whether a channel is available, uplink and downlink transmission information, orthogonal multiple access, common frequency/adjacent frequency information, common system/different system information, beam direction, beam identification, beam forming weight identification, cell identification, operator identification, sequence identification, cyclic shift identification, pre-configuration information of resources, frequency domain pattern information or labels.
In the present invention, the transmission unit is further configured to configure the same numerology parameter and/or pattern between different devices, send a detection signal according to the configuration, and/or, when actually and effectively transmitting, the different devices transmit by using the respective numerology parameter.
In the present invention, the interaction or coordination operations include: the transmission device informs the surrounding devices of specific information of the transmission device; alternatively, the transmission devices interact with each other with specific information.
In the present invention, the specific information includes at least one of: numerology parameters, transmit time domain structure, start position of transmission, end position of transmission, duration of occupied channel, fixed/predetermined resource position, interval between fixed/predetermined resources, size of fixed/predetermined resources, fixed/predetermined resource pattern index, transmit time domain structure index, perform perceptual location information, interference measurement information, beam direction, beam forming weight, beam identification, beam pattern identification.
In the present invention, the device that receives the specific information may perform at least one of the following operations: not processing; performing a sensing operation; adjusting the transmission direction on the resource with the opposite transmission direction; adjusting the channel/signal type; empty interfering resources or unaligned resources; reducing transmit power on interfering resources or unaligned resources; adjusting the beam direction; adjusting the transmit power on the beam; the beam direction is left empty.
In the present invention, the interference processing method between the control channel and the data channel in the same time domain region includes at least one of the following: determining a processing mode according to the priorities of the control channel and the data channel; the transmission device performs a sensing operation before the actual control channel resources and/or the actual data channel transmission resources; reducing transmit power on a data channel aligned with the control channel location; the different devices perform interference measurements before the control channel and/or the data channel, or interact or inform the surrounding devices of specific information; the data channel resources in the same time region are empty, and/or the control channel resources are/is controlled; the data channel and/or control channel beam direction and/or the transmit power on the beam are adjusted.
In the present invention, the processing method according to the priority of the control channel and the data channel includes at least one of the following: for the case that the control channel has higher priority, the data channel resource position which is in the alignment with the control channel resource can be performed at the data channel position, or the data channel transmitting power at the position aligned with the control channel resource can be reduced, or the sensing operation can be performed at the starting resource position of the data channel which is in the alignment with the control channel resource, the data channel at the position aligned with the control channel resource can be adjusted to be the control channel position, or the data channel transmitting beam direction can be adjusted, or the data channel beam range which is in the alignment with the control channel beam direction can be left; and/or for the case where the data channel has a higher priority, the control channel resource position that is empty and aligned with the data channel resource may be performed at the control channel position, or the control channel transmit power at the control channel resource aligned position may be reduced, or the sensing operation may be performed at or before the start resource position of the control channel that is aligned with the data channel resource, or the control channel at the aligned data channel resource position may be adjusted to the data channel position, or the control channel transmit beam direction may be adjusted, or the control channel beam range that is aligned with the data channel beam direction may be empty.
In the present invention, one of the following operations may be performed for a channel having a high priority: and performing sensing operation, or directly transmitting a detection signal before actually transmitting the resource position, or performing sensing operation, transmitting the detection signal after sensing that the channel is available, and then performing actual transmission.
In the present invention, the transmission unit is further configured to configure the same frequency domain pattern of the detection signal and/or the same numerology used for different numerology situations by different devices.
In the present invention, the transmission apparatus performs a sensing operation before an actual control channel resource and/or an actual data channel transmission resource, including: the perceived operational location performed for control channel transmission may be the same as, or different from, the perceived operational location performed for data channel transmission.
In the present invention, the perceived operation position performed for data channel transmission is the first k OFDM symbols of the data channel position, where k is a positive integer greater than and/or equal to 1.
In the present invention, the different devices perform interference measurement before a control channel and/or a data channel, or interact or inform specific information to surrounding devices, including: determining channel attributes at overlapping resource locations of the control channel and the data channel based on the interference measurements; and/or, interacting/notifying interference measurement results, and/or, interference resource location, and/or, high interference indication, and/or, employed numerology parameter, and/or, channel attribute adjustment indication, and/or, idle resource indication, and/or, adjustment power indication, and/or, priority level, and/or, predetermined resource transmission structure.
In the present invention, the priority includes at least one of: priority of different services, priority of different base stations, priority of different operators, priority of different channels and/or signals, priority of different systems, priority of different channel types.
In the present invention, the data channel or data channel information includes at least one of: an uplink data channel, a downlink data channel, a data channel position, a data channel resource size, a data channel starting position, a data channel resource interval, a data channel resource number, a period, a data channel pattern, and a data channel pattern index number.
In the present invention, the transmission time domain structure includes at least one of the following: data channels, gap, control channels, combinations thereof, and one or more of the combinations thereof.
In the present invention, the scheduling information includes at least one of: the transmission block TB size, the modulation coding MCS mode, the redundancy version RV, the retransmission indication and the HARQ process number.
In the present invention, the scheduling/HARQ timing relationship comprises at least one of: timing relationship between downlink control and downlink data, timing relationship between downlink control and uplink data, timing relationship between uplink data and uplink control, and timing relationship between downlink data and uplink control.
In the present invention, the numerology parameter includes at least one of the following: subcarrier spacing, CP, slot, mini-slot, the number of OFDM symbols contained in the slot, subframe, the length of OFDM symbols contained in the subframe, the number of mini-slots contained in the subframe, the number of small slots contained in the slot, gap.
In the present invention, the subframe type includes at least one of the following: uplink subframe, downlink subframe, and mixed subframe type.
In the present invention, the system information includes at least one of: master information block MIB, system information block SIB, physical broadcast channel PBCH.
In the present invention, the mixed subframe type includes at least one of the following: downlink control + data; downlink control + gap + data; downlink control + data + gap; gap+downlink control+data; gap+ downstream control+gap+ data; gap+downlink control+data+gap; downlink control + gap + data + gap; gap+downstream control+gap+data+gap; data+uplink control; data+gap+uplink control; data + uplink control + gap; gap+data+uplink control; gap+ data+gap+ uplink control; gap + data + uplink control + gap; data+gap+uplink control+gap; gap+ data+gap+ uplink control+gap; downlink control + data + uplink control; downlink control + gap + data + uplink control; downlink control + data + gap + uplink control; downlink control + data + uplink control + gap; gap+downstream control+data+upstream control; downlink control+gap+data+gap+uplink control; downlink control + data + gap + uplink control + gap; downlink control + data + gap + uplink control + gap; gap+downstream control+gap+data+upstream control; gap+downstream control+data+gap+upstream control; gap+downlink control+data+uplink control+gap; gap+ downstream control+gap+ data+gap+ upstream control; gap+downstream control+gap+data+upstream control+gap; downstream control+gap+data+gap+upstream control+gap.
In the present invention, the gap information, or measurement information, or perception related information, includes at least one of the following: the method comprises the steps of a time domain starting position of a gap, a time domain length of the gap, an end position of the gap, a perceived starting position, a perceived time domain length, a perceived end position, a first threshold value, a second threshold value, a perceived signal, a perceived position pattern, a perceived signal frequency domain pattern, a measured resource starting position, a measured resource size, a measured resource interval, a measured resource end position, an interference level indication, a measured signal, a spatial beam direction and a beam forming weight.
It should be noted here that: the description of the above device embodiments is similar to the description of the above method embodiments, and has similar beneficial effects as the method embodiments, and thus will not be described in detail. For technical details not disclosed in the embodiments of the apparatus of the present invention, please refer to the description of the embodiments of the method of the present invention for economy of description, and therefore, details are not repeated.
It should be noted here that:
it should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present invention, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present invention. The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the units is only one logical function division, and there may be other divisions in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units; can be located in one place or distributed to a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present invention may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read Only Memory (ROM), a magnetic disk or an optical disk, or the like, which can store program codes.
Alternatively, the above-described integrated units of the present invention may be stored in a computer-readable storage medium if implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in essence or a part contributing to the prior art in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a removable storage device, a ROM, a magnetic disk, or an optical disk.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (37)

1. An interference processing method, comprising
The transmission equipment acquires first indication information;
according to the first indication information, the transmission equipment transmits on a specific resource;
the first indication information carries control channel information and includes:
acquiring a position for transmitting a control channel through the control channel information;
the interference processing method between the control channel and the data channel in the same time domain region comprises the following steps:
determining a processing mode according to the priorities of the control channel and the data channel;
the processing mode is determined according to the priorities of the control channel and the data channel, and comprises at least one of the following steps;
for the case that the control channel has higher priority, the data channel resource position which is in the alignment with the control channel resource can be performed at the data channel position, or the data channel transmitting power at the position aligned with the control channel resource can be reduced, or the sensing operation can be performed at the starting resource position of the data channel which is in the alignment with the control channel resource, the data channel at the position aligned with the control channel resource can be adjusted to be the control channel position, or the data channel transmitting beam direction can be adjusted, or the data channel beam range which is in the alignment with the control channel beam direction can be left; and/or the number of the groups of groups,
For the case that the data channel has higher priority, the control channel resource position aligned with the data channel resource can be performed at the control channel position, or the control channel transmission power at the control channel resource aligned position can be reduced, or the sensing operation can be performed at or before the start resource position of the control channel aligned with the data channel resource, or the control channel at the aligned data channel resource position can be adjusted to the data channel position, or the control channel transmission beam direction can be adjusted, or the control channel beam range aligned with the data channel beam direction can be left empty.
2. The method of claim 1, wherein the transmitting device obtains the first indication information by at least one of:
predefined, physical layer DCI signaling, higher layer RRC signaling, over the X2 port, over the air interface.
3. The method of claim 1, wherein the first indication information comprises at least one of:
uplink grant, UL grant, downlink grant, scheduling request, SR, transmission duration, control channel information, data transmission information, transmission time domain structure, scheduling information, scheduling/HARQ timing relation, numerology parameter, subframe type, time slot information, small time slot information, subframe-to-time slot relation, subframe-to-small time slot relation, time slot-to-small time slot relation, traffic type, reference signal information, system information, random access information, time slot gap information, measurement information, perception related information, signal information, adjustment power information, empty resource information, resource allocation information, frame structure, carrier information, pattern index number, dynamic resource information, fixed resource information, transmission time window information, beam information, transmission beam set, transmission beam pattern, reception beam set, reception beam pattern, beam's shaping weight, retransmission information, priority information, empty resource indication information.
4. A method according to claim 3, wherein the control channel information comprises at least one of:
control channel position, control channel starting position, control channel resource interval, control channel resource size, control channel resource number, period, control channel pattern index number, uplink control channel, downlink control channel.
5. The method of claim 1, wherein the control channel location attribute is at least one of:
cell-specific, UE-specific, group-specific, sharing common-specific.
6. The method according to any of claims 1 to 5, characterized in that the control channel positions for different devices are aligned and/or not aligned.
7. The method according to any one of claims 1 to 6, characterized in that the method comprises at least one of the following:
the transmission equipment sends second indication information on the control channel;
acquiring the configuration condition of resources between the current control channel position and the next control channel position according to the second instruction;
acquiring the configuration condition of the resources in a period of time from the current control channel position according to the second instruction;
And acquiring the configuration condition of the resources in a period of time from the offset position according to the second instruction.
8. The method of claim 7, wherein the second indication information comprises at least one of:
downlink control information, uplink grant, downlink grant, transmission time domain structure, control channel location, data channel location, gap location, scheduling information, perceived operation location, scheduling/HARQ timing relationship, interference measurement information, empty resource indication information, whether data channel location is a dynamic resource, whether transmission time domain structure is indicated, whether transmission direction of a data channel is indicated, scheduling request SR, transmission duration, data transmission information, numerology parameter, subframe type, slot information, small slot information, subframe and slot relationship, subframe and small slot relationship, slot and small slot relationship, traffic type, reference signal information, system information, random access information, adjustment power information, empty resource information, resource allocation information, frame structure, carrier information, pattern index, dynamic resource information, fixed resource information, transmission time window information, beam information, transmission beam set, transmission beam pattern, reception beam set, reception beam pattern, beam forming weight, retransmission information, priority information.
9. The method according to claim 7 or 8, wherein at least one of the following operations is performed between control channel positions, or between a current control channel position and a next control channel position, or for a period of time from the current control channel position, or before transmission on a resource for a period of time from an offset position:
sensing operation; interference measurement operations; interaction or negotiation operations; no operations are performed, directly transmitted on the resource; and transmitting according to the second indication information.
10. The method of claim 9, wherein the sensing operation comprises at least one of:
energy sensing operation, signal detection operation.
11. The method of claim 10, wherein the energy sensing operation comprises at least one of:
if the detected/perceived energy is not greater than the first threshold value, judging that the channel is available;
if the detected/perceived energy is greater than the first threshold value and not greater than the second threshold value, judging that the channel is available;
if the detected/perceived energy is greater than the second threshold, determining that the channel is not available;
If the detected/perceived energy is greater than the first threshold, it is determined that the channel is not available.
12. The method of claim 11, wherein for the channel unavailable condition, the transmitting device is operable to perform at least one of:
no transmission is performed; performing a signal detection operation; reduced transmit power operation; adjusting the transmission direction; the channel type is adjusted.
13. The method of claim 12, wherein the signal detection operation comprises:
information carried in the received signal is identified, or a frequency domain pattern of the received signal is identified.
14. The method of claim 13, wherein the carried information comprises at least one of:
whether a channel is available, uplink and downlink transmission information, orthogonal multiple access, common frequency/adjacent frequency information, common system/different system information, beam direction, beam identification, beam forming weight identification, cell identification, operator identification, sequence identification, cyclic shift identification, pre-configuration information of resources, frequency domain pattern information or labels.
15. The method according to claim 13, comprising:
the same numerology parameters and/or patterns are configured between different devices, and probe signals are sent according to the configuration, and/or,
In actual and effective transmission, different devices transmit by adopting respective numerology parameters.
16. The method of claim 9, wherein the interacting or coordinating operations comprises:
the transmission device informs the surrounding devices of specific information of the transmission device; or alternatively, the process may be performed,
the transmission devices interact with each other with specific information.
17. The method of claim 16, wherein the specific information comprises at least one of:
numerology parameters, transmit time domain structure, start position of transmission, end position of transmission, duration of occupied channel, fixed/predetermined resource position, interval between fixed/predetermined resources, size of fixed/predetermined resources, fixed/predetermined resource pattern index, transmit time domain structure index, perform perceptual location information, interference measurement information, beam direction, beam forming weight, beam identification, beam pattern identification.
18. The method according to claim 16 or 17, wherein the device receiving the specific information is capable of performing at least one of the following operations:
not processing; performing a sensing operation; adjusting the transmission direction on the resource with the opposite transmission direction; adjusting the channel/signal type; empty interfering resources or unaligned resources; reducing transmit power on interfering resources or unaligned resources; adjusting the beam direction; adjusting the transmit power on the beam; the beam direction is left empty.
19. The method according to claim 6 or 7, wherein the interference processing method between the control channel and the data channel in the same time domain region includes at least one of:
the transmission device performs a sensing operation before the actual control channel resources and/or the actual data channel transmission resources;
reducing transmit power on a data channel aligned with the control channel location;
the different devices perform interference measurements before the control channel and/or the data channel, or interact or inform the surrounding devices of specific information;
the data channel resources in the same time region are empty, and/or the control channel resources are/is controlled;
the data channel and/or control channel beam direction and/or the transmit power on the beam are adjusted.
20. The method according to claim 1, wherein for channels with high priority one of the following operations may be performed:
and performing sensing operation, or directly transmitting a detection signal before actually transmitting the resource position, or performing sensing operation, transmitting the detection signal after sensing that the channel is available, and then performing actual transmission.
21. The method according to claim 20, comprising:
For different numerology parameters, different devices configure the same frequency domain pattern of the sounding signal and/or the same numerology parameters employed.
22. The method according to claim 19, wherein the transmitting device performs a sensing operation before actual control channel resources and/or actual data channel transmission resources, comprising:
the perceived operational location performed for control channel transmission may be the same as, or different from, the perceived operational location performed for data channel transmission.
23. The method according to claim 1 or 22, wherein the perceived operation position performed for data channel transmission is the first k OFDM symbols of a data channel position, where k is a positive integer greater than and/or equal to 1.
24. The method according to claim 19, wherein the different device performs interference measurements before control channels and/or data channels, or interacts or informs surrounding devices of specific information, comprising:
determining channel attributes at overlapping resource locations of the control channel and the data channel based on the interference measurements; and/or the number of the groups of groups,
the interference measurement results are interacted/notified, and/or interference resource positions, and/or high interference indication, and/or adopted numerology parameters, and/or channel attribute adjustment indication, and/or idle resource indication, and/or adjustment power indication, and/or priority level, and/or preset resource transmission structure are/is performed.
25. The method of claim 8, 19, 1 or 24, wherein the priority comprises at least one of: priority of different services, priority of different base stations, priority of different operators, priority of different channels and/or signals, priority of different systems, priority of different channel types.
26. The method according to claim 3 or 8, wherein the data channel or data channel information comprises at least one of:
an uplink data channel, a downlink data channel, a data channel position, a data channel resource size, a data channel starting position, a data channel resource interval, a data channel resource number, a period, a data channel pattern, and a data channel pattern index number.
27. The method according to claim 3, 8 or 17, wherein the transmission time domain structure comprises at least one of:
data channel, gap, control channel, combinations of one or more of the foregoing.
28. The method according to claim 3 or 8, wherein the scheduling information comprises at least one of:
the transmission block TB size, the modulation coding MCS mode, the redundancy version RV, the retransmission indication and the HARQ process number.
29. The method according to claim 3 or 8, wherein the scheduling/HARQ timing relationship comprises at least one of:
timing relationship between downlink control and downlink data, timing relationship between downlink control and uplink data, timing relationship between uplink data and uplink control, and timing relationship between downlink data and uplink control.
30. The method of claim 3, 15, 17, 21 or 24, wherein the numerology parameter comprises at least one of:
subcarrier spacing, CP, slot, mini-slot, the number of OFDM symbols contained in the slot, subframe, the length of OFDM symbols contained in the subframe, the number of mini-slots contained in the subframe, the number of small slots contained in the slot, gap.
31. The method of claim 3, wherein the subframe type comprises at least one of:
uplink subframe, downlink subframe, and mixed subframe type.
32. The method according to claim 3 or 14, wherein the system information comprises at least one of:
master information block MIB, system information block SIB, physical broadcast channel PBCH.
33. A method according to claim 3, wherein the gap information, or measurement information, or perceptually relevant information, comprises at least one of:
the method comprises the steps of a time domain starting position of a gap, a time domain length of the gap, an end position of the gap, a perceived starting position, a perceived time domain length, a perceived end position, a first threshold value, a second threshold value, a perceived signal, a perceived position pattern, a perceived signal frequency domain pattern, a measured resource starting position, a measured resource size, a measured resource interval, a measured resource end position, an interference level indication, a measured signal, a spatial beam direction and a beam forming weight.
34. An interference handling device, comprising:
the acquisition unit is used for acquiring the first indication information;
a transmission unit, configured to transmit on a specific resource according to the first indication information;
the first indication information carries control channel information and includes: acquiring a position for transmitting a control channel through the control channel information;
the interference processing method between the control channel and the data channel in the same time domain region comprises the following steps:
determining a processing mode according to the priorities of the control channel and the data channel;
The processing mode is determined according to the priorities of the control channel and the data channel, and comprises at least one of the following steps;
for the case that the control channel has higher priority, the data channel resource position which is in the alignment with the control channel resource can be performed at the data channel position, or the data channel transmitting power at the position aligned with the control channel resource can be reduced, or the sensing operation can be performed at the starting resource position of the data channel which is in the alignment with the control channel resource, the data channel at the position aligned with the control channel resource can be adjusted to be the control channel position, or the data channel transmitting beam direction can be adjusted, or the data channel beam range which is in the alignment with the control channel beam direction can be left; and/or the number of the groups of groups,
for the case that the data channel has higher priority, the control channel resource position aligned with the data channel resource can be performed at the control channel position, or the control channel transmission power at the control channel resource aligned position can be reduced, or the sensing operation can be performed at or before the start resource position of the control channel aligned with the data channel resource, or the control channel at the aligned data channel resource position can be adjusted to the data channel position, or the control channel transmission beam direction can be adjusted, or the control channel beam range aligned with the data channel beam direction can be left empty.
35. The apparatus of claim 34, wherein the transmission device obtains the first indication information by at least one of: and predefining physical layer downlink control information DCI signaling, higher layer radio resource control RRC signaling, and passing through an X2 port and an air interface.
36. The apparatus of claim 34, wherein the first indication information comprises at least one of: uplink grant, UL grant, downlink grant, scheduling request, SR, transmission duration, control channel information, data transmission information, transmission time domain structure, scheduling information, scheduling/hybrid automatic repeat request, HARQ, timing relationship, numerology parameter, subframe type, time slot information, minislot information, subframe-to-time slot relationship, subframe-to-minislot relationship, time slot-to-minislot relationship, traffic type, reference signal information, system information, random access information, time gap information, measurement information, perceptually relevant information, signal information, adjustment power information, overhead resource information, resource allocation information, frame structure, carrier information, pattern index, dynamic resource information, fixed resource information, transmission time window information, beam information, transmit beam set, transmit beam pattern, receive beam set, receive beam pattern, beam forming weight, retransmission information, priority information, overhead resource indication information.
37. The apparatus of claim 36, wherein the control channel information comprises at least one of: control channel position, control channel starting position, control channel resource interval, control channel resource size, control channel resource number, period, control channel pattern index number, uplink control channel, downlink control channel.
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