CN110831121B - Wake-up signal collision solving method and device, storage medium, terminal and base station - Google Patents
Wake-up signal collision solving method and device, storage medium, terminal and base station Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
A collision solution method and device for wake-up signals, a storage medium, a terminal and a base station are provided, wherein the collision solution method for wake-up signals comprises the following steps: detecting a wake-up signal; when the time frequency resource of the wake-up signal collides with the reserved resource, determining the collision part of the wake-up signal based on the time frequency resource at the symbol level; postponing reception or puncturing reception or ignoring a collision portion of the wake-up signal. By the technical scheme provided by the invention, the wake-up signal can be optimized, and the collision between the time-frequency resource occupied by the wake-up signal and other reserved resources is avoided, so that a 5G system or other wireless systems can be better compatible with the wake-up signal, and the power consumption of the terminal is saved.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for solving a collision of a wake-up signal, a storage medium, a terminal, and a base station.
Background
New Radio (NR) systems will be deployed in The future for The Fifth Generation mobile communications (5G). In the NR system, in order to save power consumption of a User Equipment (UE), the UE may enter a sleep state.
For a UE entering a sleep state, the network may send a Wake-Up Signal (Wake-Up Signal) to Wake Up the UE to resume communication between the network and the UE. However, due to limited resources, the wake-up signal may collide with other signals.
Currently, there is no solution for collision of wake-up signals with other signals in NR systems.
Disclosure of Invention
The invention solves the technical problem of how to optimize the wake-up signal and avoid the collision between the wake-up signal and other signals, so that a 5G system or other wireless systems can be better compatible with the wake-up signal, and the power consumption of a terminal is saved.
In order to solve the above technical problem, an embodiment of the present invention provides a method for solving a collision of a wake-up signal, where the method for solving a collision of a wake-up signal includes: detecting a wake-up signal; when the time frequency resource of the wake-up signal collides with the reserved resource, determining the collision part of the wake-up signal based on the time frequency resource at the symbol level; postponing reception or puncturing reception or ignoring a collision portion of the wake-up signal.
Optionally, the reserved resource is a time-frequency resource of a synchronization signal block, and the determining a collision part based on the time-frequency resource at the symbol level includes: and when the symbol of the wake-up signal is completely or partially overlapped with the time frequency resource of the synchronous signal block, determining the symbol as the collision part of the wake-up signal.
Optionally, the reserved resource is a time-frequency resource of a search space set and a corresponding control resource set, and determining the collision portion of the wake-up signal based on the symbol-level time-frequency resource includes: and when the symbol of the wake-up signal is completely or partially overlapped with the time frequency resource of the search space set and the corresponding control resource set, determining the symbol as the collision part of the wake-up signal.
Optionally, the time-frequency resources of the search space set and the corresponding control resource set are selected from the time-frequency resources of the search space set0 and the corresponding control resource set 0; time frequency resources of the common search space set and the corresponding control resource set 0; the time-frequency resources of the common search space set and the corresponding other control resource set except control resource set 0.
Optionally, the reserving resources are rate matching resources, and determining the collision portion of the wake-up signal based on the symbol-level time-frequency resources includes: and when the symbol of the wake-up signal is completely or partially overlapped with the rate matching time frequency resource, determining the symbol as a collision part of the wake-up signal.
Optionally, the reserved resource is a time-frequency resource of a PDCCH, and determining the collision portion of the wake-up signal based on the symbol-level time-frequency resource includes: and when the symbol of the wake-up signal is completely or partially overlapped with the time-frequency resource of the PDCCH, determining the symbol as a collision part of the wake-up signal.
Optionally, the determining the collision portion of the wake-up signal based on the symbol-level time-frequency resource includes: and when the symbol of the wake-up signal is completely or partially overlapped with the time frequency resource of the channel state information reference signal, determining the symbol as the collision part of the wake-up signal.
Optionally, the network configures a maximum duration for transmitting the wake-up signal, the time domain resource of the wake-up signal is 14 symbols in a single timeslot or 12 symbols in the single timeslot that are ordered last, and the wake-up signal is repeatedly received within the maximum duration.
Optionally, the parameter of the wake-up signal uses a parameter set of BWP or uses a parameter set of the synchronization signal block.
In order to solve the above technical problem, an embodiment of the present invention further provides a method for solving collision of wake-up signals, where the method for solving collision of wake-up signals includes: determining time-frequency resources of the wake-up signal; when the time frequency resource of the wake-up signal collides with the reserved resource, determining the collision part of the wake-up signal based on the time frequency resource at the symbol level; postponing transmitting or puncturing transmission or discarding a collision portion of the wake-up signal.
Optionally, the reserving resources are time-frequency resources of a synchronization signal block, and determining the collision portion of the wake-up signal based on the symbol-level time-frequency resources includes: and when the symbol of the wake-up signal is completely or partially overlapped with the time frequency resource of the synchronous signal block, determining the symbol as the collision part of the wake-up signal.
Optionally, searching for time-frequency resources of a space set and a corresponding control resource set, where determining the collision portion of the wake-up signal based on the symbol-level time-frequency resources includes: and when the symbol of the wake-up signal is completely or partially overlapped with the time frequency resource of the search space set and the corresponding control resource set, determining the symbol as the collision part of the wake-up signal.
Optionally, the time-frequency resources of the search space set and the corresponding control resource set are selected from: searching time-frequency resources of the space set0 and the corresponding control resource set 0; time frequency resources of the common search space set and the corresponding control resource set 0; the time-frequency resources of the common search space set and the corresponding other control resource set except control resource set 0.
Optionally, the reserving resources are rate matching resources, and determining the collision portion of the wake-up signal based on the symbol-level time-frequency resources includes: and when the symbol of the wake-up signal is completely or partially overlapped with the rate matching time frequency resource, determining the symbol as a collision part of the wake-up signal.
Optionally, the reserved resource is a time-frequency resource of a PDCCH, and determining the collision portion of the wake-up signal based on the symbol-level time-frequency resource includes: and when the symbol of the wake-up signal is completely or partially overlapped with the time-frequency resource of the PDCCH, determining the symbol as a collision part of the wake-up signal.
Optionally, the determining the collision portion of the wake-up signal based on the symbol-level time-frequency resource includes: and when the symbol of the wake-up signal is completely or partially overlapped with the time frequency resource of the channel state information reference signal, determining the symbol as the collision part of the wake-up signal.
Optionally, the network configures a maximum duration for transmitting the wake-up signal, the time domain resource of the wake-up signal is 14 symbols in a single timeslot or 12 symbols in the single timeslot that are sequenced last, and the wake-up signal is repeatedly sent within the maximum duration.
Optionally, the parameter set of the wake-up signal uses a parameter set of BWP or uses a parameter set of the synchronization signal block.
In order to solve the above technical problem, an embodiment of the present invention further provides a collision solution apparatus for a wake-up signal, where the collision solution apparatus for the wake-up signal includes: the detection module is suitable for detecting the wake-up signal; the determining module is suitable for determining a collision part of the wake-up signal based on the time frequency resources at the symbol level when the time frequency resources of the wake-up signal collide with the reserved resources; a collision resolution module adapted to defer receiving or puncturing reception or ignoring a collision portion of the wake-up signal.
In order to solve the above technical problem, an embodiment of the present invention further provides a collision solution apparatus for a wake-up signal, where the collision solution apparatus for the wake-up signal includes: the first determining module is suitable for determining time-frequency resources of the wake-up signal; the second determining module is suitable for determining a collision part of the wake-up signal based on the time frequency resources at the symbol level when the time frequency resources of the wake-up signal collide with the reserved resources; a collision resolution module adapted to defer sending or puncturing sending or discarding a collision portion of the wake-up signal.
In order to solve the above technical problem, an embodiment of the present invention further provides a storage medium, on which computer instructions are stored, and when the computer instructions are executed, the steps of the collision solution method for the wake-up signal are executed.
In order to solve the above technical problem, an embodiment of the present invention further provides a terminal, including a memory and a processor, where the memory stores a computer instruction executable on the processor, and the processor executes the steps of the collision solution method for the wake-up signal when executing the computer instruction.
In order to solve the above technical problem, an embodiment of the present invention further provides a base station, including a memory and a processor, where the memory stores computer instructions executable on the processor, and the processor executes the steps of the collision solution method for the wake-up signal when executing the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a collision solution method of wake-up signals, which comprises the following steps: detecting a wake-up signal; when the time frequency resource of the wake-up signal collides with the reserved resource, determining the collision part of the wake-up signal based on the time frequency resource at the symbol level; postponing reception or puncturing reception or ignoring a collision portion of the wake-up signal. Through the technical scheme provided by the embodiment of the invention, when the wake-up signal collides with other reserved resources, the UE can postpone receiving, punching receiving or ignoring the wake-up signal so as to avoid the collision of the wake-up signal with other signals, so that a 5G system (such as an NR system) or other wireless systems can be compatible with the wake-up signal, and the power consumption of the terminal is saved. Further, according to the technical scheme provided by the embodiment of the invention, the collision part can be processed in a symbol-level processing mode. Compared with the processing at the time slot level or the symbol group level, the processing at the symbol level can improve the resource utilization rate of the wake-up signal; compared with Resource Element (RE) level processing, symbol level processing can reserve a wake-up signal subsequence in one symbol as much as possible, and better guarantee the correlation characteristics of the wake-up signal.
Further, the reserved resource is a time-frequency resource of a synchronization signal block, and the determining a collision part based on the time-frequency resource at the symbol level includes: and when the symbol of the wake-up signal is completely or partially overlapped with the time frequency resource of the synchronous signal block, determining the symbol as the collision part of the wake-up signal. Through the technical scheme provided by the embodiment of the invention, the processing scheme is provided when the symbol of the wake-up signal collides with the time-frequency resource of the synchronous signal block, so that the resource utilization rate of the wake-up signal can be improved.
Drawings
Fig. 1 is a flowchart illustrating a collision solution method for a wake-up signal according to an embodiment of the present invention;
FIG. 2 is a flow chart of a further method for collision resolution of wake-up signals according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a collision solution apparatus for a wake-up signal according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a collision resolution apparatus for wake-up signals according to another embodiment of the present invention;
fig. 5 is a schematic signaling interaction diagram of an exemplary application scenario according to an embodiment of the present invention.
Detailed Description
As stated in the background, no solution has solved the problem of collision of Wake-Up Signal (Wake-Up Signal) with other signals.
Specifically, in the NR system, a Synchronization Signal and a broadcast channel Signal are transmitted in the form of a Synchronization Signal Block (SSB), and a function such as beam scanning (beam scanning) is introduced in the 5G system. Each synchronization signal block can be regarded as a resource corresponding to one beam in the beam scanning process. The Synchronization Signal block includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH). A plurality of synchronization signal blocks constitute a synchronization signal burst (synchronization signal burst). The synchronization signal burst can be viewed as a relatively centralized resource of a block containing multiple beams. The plurality of synchronization signal bursts form a set of synchronization signal bursts (sync signal burst set). The synchronization signal block is repeatedly transmitted on different beams to complete the beam scanning process. Through the training of the beam scanning, the user equipment can determine on which beam the signal received is strongest.
For example, it can be assumed that the time domain positions of the L synchronization signal blocks within a 5 millisecond (ms) window are fixed. That is, the transmission time instant of the synchronization signal block within the 5ms window is fixed, as is the index. Wherein the indexes of the L synchronous signal blocks are arranged consecutively in time domain positions from 0 to (L-1), L being a positive integer.
Further, a new concept of "Bandwidth Part (BWP)" is introduced into the NR system, allowing the NR UE to access the 5G system using narrowband BWP and transmit the service using broadband BWP. For NR systems, a Cell (e.g., Primary Cell, PCell Cell for short) may contain multiple BWPs, each occupying a limited bandwidth.
Further, the base station may configure a Control Resource Set (CORESET) and a Search space Set (Search space Set) for BWP. The CORESET includes information such as a frequency domain Resource position, a time domain symbol number, and a Control Channel Element (CCE) and a Resource Element Group (REG) (i.e., CCE-to-REG) mapping of a Physical Downlink Control Channel (PDCCH) monitored by the UE. The search space set comprises information such as a slot cycle of a PDCCH monitored by user equipment, a starting symbol position and an aggregation level in a slot. A set of search spaces will bind a set of control resources. The search space set and its bound control resource set determine a set of time-frequency resources, which may be referred to as "time-frequency resources of the search space set and corresponding control resource set".
There are two types of search space collections: a Common search space (or a Common search space set) and a UE specific search space (or a UE specific search space set).
The UE may blindly detect the PDCCH in the configured set of one or more search spaces. In the search space set, the UE may blindly detect a pdcch (pdcch candidate) according to a preset rule, and detect Downlink Control Information (DCI) according to a Radio Network Temporary Identifier (RNTI).
The number of candidate DCIs that the UE needs to detect may be one or more for each search space set.
Further, the control resource set 0(CORESET0) is the CORESET for the UE initially accessing to monitor the Remaining Minimum System Information (RMSI) PDCCH by default. Search space set 0(SS0) is the search space set of the user equipment default monitoring RMSIPDCCH that was initially accessed. Search space set0 is a common search space or a set of common search spaces. The initially accessed ue monitors candidate PDCCHs in the control resource set0 and the search space set0 by default, that is, the search space set0 may bind the control resource set0 by default, and the search space set0 and the control resource set0 bound thereto determine a group of time-frequency resources, which may be referred to as "time-frequency resources of the search space set0 and the corresponding control resource set 0". In addition, other common search space sets may also bind the control resource set0, and the other common search space sets and the control resource set0 bound thereto determine a group of time-frequency resources, which may be referred to as "time-frequency resources of the common search space set and the corresponding control resource set 0". In addition, other common search space sets may also bind other control resource sets other than the control resource set0, and the other common search space sets and the other control resource sets bound thereto other than the control resource set0 determine a group of time-frequency resources, which may be referred to as "time-frequency resources of the common search space set and the corresponding other control resource sets other than the control resource set 0".
Generally, the user equipment needs to periodically monitor the paging PDCCH to acquire a paging message or a system information update indication. In some scenarios (e.g., low mobility scenario), if the ue can detect the wake-up signal before a corresponding Paging Occasion (PO), the frequency of blind Paging PDCCH detection at the Paging Occasion can be reduced, and the detection complexity of the ue is reduced, thereby saving power consumption. And if the wake-up signal exists, only the wake-up signal can be monitored, and the execution times of time frequency synchronization are reduced, so that the purpose of saving power consumption is achieved. However, how to optimize the wake-up signal to make the 5G system or other wireless systems compatible with the wake-up signal has not been solved.
To solve the above technical problem, an embodiment of the present invention provides a method for solving a collision of a wake-up signal, including: determining time-frequency resources of the wake-up signal; when the time frequency resource of the wake-up signal collides with the reserved resource, determining the collision part of the wake-up signal based on the time frequency resource at the symbol level; postponing reception or puncturing reception or ignoring a collision portion of the wake-up signal. Through the technical scheme provided by the embodiment of the invention, when the wake-up signal collides with other reserved resources, the UE can postpone receiving, punching receiving or ignoring the wake-up signal so as to avoid the collision of the wake-up signal with other signals, so that a 5G system (such as an NR system) or other wireless systems can be compatible with the wake-up signal, and the power consumption of the terminal is saved.
Further, according to the technical scheme provided by the embodiment of the invention, the collision part can be processed in a symbol-level processing mode. Compared with the processing at the time slot level or the symbol group level, the processing at the symbol level can improve the resource utilization rate of the wake-up signal; compared with the processing at the Resource Element (Resource Element) level, the processing at the symbol level can reserve the wake-up signal subsequence in one symbol as much as possible, and better ensures the relevant characteristics of the wake-up signal.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a flowchart illustrating a collision solution method for a wake-up signal according to an embodiment of the present invention, where the collision solution method for a wake-up signal can be applied to a user equipment side, such as executed by a UE. Specifically, the collision solution method for the wake-up signal may include the following steps:
step S101, detecting a wake-up signal;
step S102, when the time frequency resource of the awakening signal collides with the reserved resource, determining the collision part of the awakening signal based on the time frequency resource at the symbol level;
step S103, postponing receiving or puncturing receiving or ignoring the collision part of the wake-up signal.
More specifically, the wake-up signal may be a signal that is different from a synchronization signal block and that the UE needs to periodically detect, and may be used to wake up the UE for PDCCH detection, or used to perform resynchronization. In step S101, the UE may detect a wake-up signal. Generally, the wake-up signal is periodically transmitted by the network. The UE may periodically receive and detect the wake-up signal.
Further, the parameter set of the wake-up signal may use a parameter set (numerology) of BWP. For example, the parameter set of the time-frequency resource occupied by the symbol on the time-domain resource of the wake-up signal may use the parameter set of the time-frequency resource occupied by the symbol on the BWP where the user equipment is located, or the parameter set of the synchronization signal block may be used as the parameter set of the wake-up signal.
Further, the base station may configure a maximum duration for transmitting the wake-up signal, and the wake-up signal may be composed of a basic resource unit repeated within the maximum duration. Wherein, the basic resource unit may be 14 symbols in a single slot. The wake-up signal may be repeatedly transmitted for the maximum duration.
As a variation, the base station may configure a maximum duration for transmitting the wake-up signal, and the time domain resource of the wake-up signal may be 12 symbols in a single slot, where the 12 symbols may be the last 12 symbols in a slot. And the wake-up signal may be repeatedly transmitted for the maximum duration. At this time, the UE may detect the last 12 symbols in a single slot to obtain the wake-up signal.
In step S102, if the UE determines that the time-frequency resource of the wake-up signal collides with the reserved resource, the UE may determine the collision part of the wake-up signal. In a specific implementation, in order to make the NR system compatible with the wake-up signal, the NR system needs to avoid collision with other signals when transmitting the wake-up signal.
Further, when the time-frequency resource used by the wake-up signal collides with the reserved resource, the collision part of the wake-up signal can be determined. The reserved Resource may be a time-frequency Resource of a synchronization Signal block, a time-frequency Resource of a search space set and a corresponding control Resource set, a Rate Matching Resource (RMR), a time-frequency Resource of a PDCCH, or a time-frequency Resource of a Channel State Information Reference Signal (CSI-RS), etc.
When the wake-up signal collides with the reserved time Frequency Resource, the collision part of the wake-up signal may be one or more Resource Elements (RE) or one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols. In determining the collision portion, the collision portion of the wake-up signal may be determined based on symbol-level time-frequency resources. An advantage of determining the collision part in OFDM symbols is that determining the collision part of the wake-up signal based on the symbol level may try to preserve the wake-up signal sub-sequence within the symbol, thereby preserving the correlation properties of the wake-up signal.
As a non-limiting example, when a certain symbol of the wake-up signal completely overlaps or partially overlaps with a synchronization signal block, the base station and/or the UE may determine the symbol as a collision portion of the wake-up signal.
Wherein the synchronization signal block may comprise all possible synchronization signal blocks; alternatively, the synchronization signal block may only include the synchronization signal block indicated in the RMSI, which is for the idle UE; alternatively, the synchronization signal block may only include the synchronization signal block indicated in the RRC, and the synchronization signal block is for the connected UE.
As yet another non-limiting example, when a certain symbol of the wake-up signal completely overlaps or partially overlaps with time-frequency resources occupied by a set of search spaces and a corresponding set of control resources, the base station and/or the UE may determine the symbol as a collision portion of the wake-up signal.
The time-frequency resources occupied by the search space set and the corresponding control resource set may be time-frequency resources occupied by a search space set0 and a corresponding control resource set 0; or a time-frequency resource occupied by a common search space set and a corresponding control resource set0, and the common search space set may be a common search space set configured by an RRC binding the control resource set0, wherein the common search space set is different from the search space set 0; it can also be a time-frequency resource occupied by the common search space set0 and a corresponding additional control resource set, which refers to other control resource sets configured by RRC and different from the control resource set 00.
Further, the time-frequency resources occupied by the search space set and the corresponding control resource set may include search space sets and corresponding control resource sets associated with all possible synchronization signal blocks; or, the time-frequency resources occupied by the search space set and the corresponding control resource set may only include the search space set and the corresponding control resource set associated with the synchronization signal block indicated in the RMSI, where the search space set and the corresponding control resource set are for the idle-state UE, or the time-frequency resources occupied by the search space set and the corresponding control resource set may only include the search space set and the corresponding control resource set associated with the synchronization signal block indicated in the RRC, where the search space set and the corresponding control resource set are for the connected-state UE.
As yet another non-limiting example, when a symbol of the wake-up signal completely overlaps or partially overlaps with a rate matching resource, the base station and/or the UE may determine the symbol as a collision portion of the wake-up signal.
As another non-limiting example, when a certain symbol of the wake-up signal completely overlaps or partially overlaps with a time-frequency resource occupied by the PDCCH, the base station and/or the UE may determine the symbol as a collision portion of the wake-up signal. Generally speaking, the resources of the search space set corresponding to the time-frequency resources occupied by the PDCCH and the corresponding control resource set are not included in the RMR, and when the UE detects the PDCCH, the UE knows the existence of the PDCCH, and at this time, the corresponding resources are already occupied by the PDCCH.
As yet another non-limiting example, when a certain symbol of the wake-up signal completely overlaps or partially overlaps with a time-frequency resource occupied by a CSI-RS, a base station and/or a UE may determine the symbol as a collision portion of the wake-up signal.
In step S103, the UE may defer receiving the colliding portion of the wake-up signal; or punching a collision part for receiving the wake-up signal; alternatively, the collision part of the wake-up signal is ignored.
Specifically, as a non-limiting example, when the wake-up signal completely or partially overlaps the synchronization signal block, the base station may defer (e.g., defer forward) transmission of the colliding portion of the wake-up signal, i.e., until the colliding symbol does not overlap the synchronization signal block. In other words, for the UE, the reception of the colliding portion of the wake-up signal may be postponed. Alternatively, when a certain symbol of the wake-up signal completely or partially overlaps with a synchronization signal block, the base station may discard the collision portion of the wake-up signal, which may be ignored by the UE. Alternatively, when a certain symbol of the wake-up signal completely or partially overlaps with a synchronization signal block, the base station may puncture a collision portion where the wake-up signal is transmitted, and the UE may puncture a collision portion where the wake-up signal is received. It should be noted that, in this case, the collision solution can be applied to the idle-state and connected-state ue.
As yet another non-limiting example, when the wake-up signal fully or partially overlaps the time-frequency resources of the search space set and corresponding set of control resources, the base station may defer (e.g., defer) transmission of the colliding portion of the wake-up signal, i.e., retransmit the colliding symbol until the symbol does not overlap the synchronization signal block. In other words, for the UE, the reception of the colliding portion of the wake-up signal may be postponed. Alternatively, when a certain symbol of the wake-up signal completely or partially overlaps with time-frequency resources of a search space set and a corresponding control resource set, the base station may discard a collision portion of the wake-up signal, and the UE may ignore the collision portion. Alternatively, when a certain symbol of the wake-up signal completely or partially overlaps with time-frequency resources of a search space set and a corresponding control resource set, the base station may puncture a collision portion for transmitting the wake-up signal, and the UE may puncture a collision portion for receiving the wake-up signal. It should be noted that, in this case, the collision solution can be applied to the idle-state and connected-state ue.
As yet another non-limiting example, when the wake-up signal completely or partially overlaps the rate matching resources, the base station may defer (e.g., defer forward) transmission of the colliding portion of the wake-up signal, i.e., transmit the colliding symbol until the symbol does not overlap the rate matching resources. In other words, for the UE, the reception of the colliding portion of the wake-up signal may be postponed. Alternatively, when a certain symbol of the wake-up signal completely or partially overlaps with a rate matching resource, the base station may discard the collision portion of the wake-up signal, which may be ignored by the UE. Alternatively, when a certain symbol of the wake-up signal completely or partially overlaps with a rate matching resource, the base station may puncture a collision portion in which the wake-up signal is transmitted, and the UE may puncture a collision portion in which the wake-up signal is received. It should be noted that, in this case, the collision solution may be applied to the connected ue.
As another non-limiting example, when the wake-up signal completely or partially overlaps the time-frequency resources occupied by the PDCCH, the base station may defer (e.g., defer) transmission of the colliding portion of the wake-up signal, i.e., transmit the colliding symbols until the symbols do not overlap the time-frequency resources occupied by the PDCCH. In other words, for the UE, the reception of the colliding portion of the wake-up signal may be postponed. Or, when a certain symbol of the wake-up signal completely or partially overlaps with a time-frequency resource occupied by the PDCCH, the base station may discard a collision portion of the wake-up signal, and the UE may ignore the collision portion. Or, when a certain symbol of the wake-up signal completely or partially overlaps with a time-frequency resource occupied by the PDCCH, the base station may puncture a collision portion for transmitting the wake-up signal, and the UE may puncture a collision portion for receiving the wake-up signal. It should be noted that, in this case, the collision solution may be applied to the connected ue.
As yet another non-limiting example, when the wake-up signal completely or partially overlaps with the time-frequency resources occupied by the CSI-RS, the base station may defer (e.g., defer forward) transmission of the colliding portion of the wake-up signal, i.e., transmit the colliding symbols until the symbols do not overlap with the time-frequency resources occupied by the CSI-RS. In other words, for the UE, the reception of the colliding portion of the wake-up signal may be postponed. Or, when a certain symbol of the wake-up signal completely or partially overlaps with a time-frequency resource occupied by the CSI-RS, the base station may discard a collision portion of the wake-up signal, and the UE may ignore the collision portion. Or, when a certain symbol of the wake-up signal completely or partially overlaps with a time-frequency resource occupied by the CSI-RS, the base station may puncture a collision portion for transmitting the wake-up signal, and the UE may puncture a collision portion for receiving the wake-up signal. It should be noted that, in this case, the collision solution may be applied to the connected ue.
Fig. 2 is a flowchart illustrating a collision solution method for a wake-up signal according to an embodiment of the present invention. The collision solution method of the wake-up signal can be applied to the network side. For example, by a base station on the network side.
Specifically, the collision solution method for the wake-up signal may include the following steps:
step S201, determining time frequency resources of the wake-up signal;
step S202, when the time frequency resource of the wake-up signal collides with the reserved resource, determining the collision part of the wake-up signal based on the time frequency resource at the symbol level;
step S203, postponing sending or punching sending or discarding the collision part of the wake-up signal.
More specifically, in step S201, the base station may determine the time-frequency resource occupied by the wake-up signal according to its own state or protocol specification. The base station may configure a maximum duration for transmitting the wake-up signal, the time domain resource of the wake-up signal is 14 symbols in a single slot or the last 12 symbols in the single slot, and the wake-up signal is repeatedly received within the maximum duration.
It should be noted that the wake-up signal parameter set may use a parameter set of BWP, or may use a parameter set of the synchronization signal block.
In step S202, when the time-frequency resource of the wake-up signal collides with the reserved resource, the UE and/or the base station may determine the collided portion of the wake-up signal. In particular, the UE and/or the base station may determine the collision portion of the wake-up signal based on symbol-level time-frequency resources. If the reserved resource is a time-frequency resource of a synchronization signal block, when a symbol of the wake-up signal completely overlaps or partially overlaps with the time-frequency resource of the synchronization signal block, the UE and/or the base station may determine the symbol as a collision portion of the wake-up signal.
As a variation, if the reserved resources are time-frequency resources of a search space set and a corresponding control resource set, when a symbol of the wake-up signal completely overlaps or partially overlaps with the time-frequency resources of the search space set and the corresponding control resource set, the UE and/or the base station may determine the symbol as a collision part of the wake-up signal.
Wherein the time-frequency resources of the search space set and the corresponding control resource set may be selected from: searching time-frequency resources of the space set0 and the corresponding control resource set 0; time frequency resources of the common search space set and the corresponding control resource set 0; the time-frequency resources of the common search space set and the corresponding other control resource set except control resource set 0.
As yet another variation, if the reserved resource is a rate matching resource, the UE and/or the base station may determine a symbol of the wake-up signal as a collision part of the wake-up signal when the symbol completely overlaps or partially overlaps with the rate matching time-frequency resource.
As a further variation, if the reserved resource is a time-frequency resource of a PDCCH, the UE and/or the base station may determine a symbol of the wake-up signal as a collision part of the wake-up signal when the symbol completely overlaps or partially overlaps with the time-frequency resource of the PDCCH.
As another variation, if the reserved resource is a time-frequency resource of a CSI-RS, the UE and/or the base station may determine a symbol of the wake-up signal as a collision part of the wake-up signal when the symbol completely overlaps or partially overlaps with the time-frequency resource of the CSI-RS.
In step S203, the base station may defer transmitting the collision part of the wake-up signal; alternatively, the collision part of the wake-up signal may be punctured; alternatively, the colliding portion of the wake-up signal may be discarded.
Those skilled in the art understand that the steps S201 to S203 can be regarded as execution steps corresponding to the steps S101 to S103 described in the above embodiment shown in fig. 1, and the two steps are complementary in specific implementation principle and logic. Therefore, for the explanation of the terms involved in the present embodiment, reference may be made to the description related to the embodiment shown in fig. 1, and the description is not repeated here.
Therefore, by adopting the technical scheme provided by the embodiment of the invention, the base station can delay sending, punching sending or discarding the wake-up signal, and the UE can delay receiving, punching receiving or ignoring the wake-up signal, so as to avoid collision of the wake-up signal with other signals, so that an NR system or other wireless communication systems can be compatible with the wake-up signal, and thus the power consumption of the terminal is saved.
Fig. 3 is a schematic structural diagram of a collision solution apparatus for a wake-up signal according to an embodiment of the present invention. The collision solution apparatus 3 for the wake-up signal (hereinafter referred to as collision solution apparatus 3) may be applied to a user equipment side, for example, executed by a UE, and those skilled in the art understand that the embodiment of the present invention may be used to implement the above-mentioned collision solution method for the wake-up signal shown in fig. 1.
Specifically, the collision solving device 3 may include: a detection module 31, a determination module 32 and a collision resolution module 33.
More specifically, the detection module 31 is adapted to detect a wake-up signal; the determining module 32 is adapted to determine a collision part of the wake-up signal based on symbol-level time-frequency resources when the time-frequency resources of the wake-up signal collide with reserved resources; the collision resolution module 33 is adapted to postpone receiving or puncturing the collision part of the wake-up signal or to ignore it.
As a non-limiting example, the reserved resource is a time-frequency resource of a synchronization signal block, and the determining module 32 may include: a first determining submodule 321, adapted to determine a symbol of the wake-up signal as a collision part of the wake-up signal when the symbol completely overlaps or partially overlaps with a time-frequency resource of a synchronization signal block.
As a further non-limiting example, the reserved resources are time-frequency resources of a search space set and a corresponding control resource set, and the determining submodule 32 may include: a second determining submodule 322, adapted to determine a symbol of the wake-up signal as a collision part of the wake-up signal when the symbol completely or partially overlaps with time-frequency resources of a search space set and a corresponding control resource set.
Wherein the time-frequency resources of the search space set and corresponding control resource set are selected from: searching time-frequency resources of the space set0 and the corresponding control resource set 0; time frequency resources of the common search space set and the corresponding control resource set 0; the time-frequency resources of the common search space set and the corresponding other control resource set except control resource set 0.
As still another non-limiting example, the reserved resources are rate matching resources, and the determining module 32 may include: a third determining submodule 323 adapted to determine a symbol of the wake-up signal as a collision part of the wake-up signal when the symbol completely overlaps or partially overlaps with the rate matched time frequency resources.
As another non-limiting example, the reserved resource is a time-frequency resource of a PDCCH, and the determining module 32 may include: a fourth determining submodule 324 adapted to determine a symbol of the wake-up signal as a collision part of the wake-up signal when the symbol completely overlaps or partially overlaps with a time-frequency resource of the PDCCH.
As another non-limiting example, the reserved resource is a time-frequency resource of a channel state information reference signal, and the determining module 32 may include: a fifth determining submodule 325, adapted to determine a symbol of the wake-up signal as a collision part of the wake-up signal when the symbol completely overlaps or partially overlaps with a time-frequency resource of a channel state information reference signal.
In a specific implementation, the network may configure a maximum duration for transmitting the wake-up signal, where the time domain resource of the wake-up signal is 14 symbols in a single timeslot or 12 symbols in the single timeslot that are ordered last, and the wake-up signal is repeatedly transmitted within the maximum duration.
Wherein the wake-up signal parameter set may use a parameter set of BWP or may use a parameter set of a sync signal block.
For more details on the working principle and working mode of the collision solving device 3, reference may be made to the description in fig. 1, and further description is omitted here.
Fig. 4 is a collision solution apparatus for a wake-up signal according to an embodiment of the present invention. The collision solution apparatus 4 for wake-up signals (for simplicity, hereinafter referred to as collision solution apparatus 4) may be applied to a network side, for example, executed by a base station on the network side, and those skilled in the art understand that the embodiment of the present invention may be used to implement the above-mentioned collision solution method for wake-up signals shown in fig. 2.
Specifically, the collision solving device 4 may include: a first determination module 41, a second determination module 42 and a collision decoding module 43.
More specifically, the first determining module 41 is adapted to determine time-frequency resources of the wake-up signal; the second determining module 42 is adapted to determine a collision part of the wake-up signal based on symbol-level time-frequency resources when the time-frequency resources of the wake-up signal collide with reserved resources; the collision resolution module 43 is adapted to postpone sending or puncturing sending or discarding the collision part of the wake-up signal.
As a non-limiting example, the reserved resource is a time-frequency resource of a synchronization signal block, and the second determining module 42 may include: a first determining submodule 421 adapted to determine a symbol of the wake-up signal as a collision part of the wake-up signal when the symbol completely overlaps or partially overlaps with a time-frequency resource of a synchronization signal block.
As another non-limiting example, the reserved resources are time-frequency resources of a search space set and a corresponding control resource set, and the determining submodule 421 may include: a second determining submodule 422, adapted to determine a symbol of the wake-up signal as a collision part of the wake-up signal when the symbol completely or partially overlaps with time-frequency resources of a search space set and a corresponding control resource set.
Wherein the time-frequency resources of the search space set and corresponding control resource set are selected from: searching time-frequency resources of the space set0 and the corresponding control resource set 0; time frequency resources of the common search space set and the corresponding control resource set 0; the time-frequency resources of the common search space set and the corresponding other control resource set except control resource set 0.
As still another non-limiting example, the reserved resources are rate matching resources, and the second determining module 42 may include: a third determining submodule 423 adapted to determine a symbol of the wake-up signal as a collision part of the wake-up signal when the symbol completely overlaps or partially overlaps with the rate matched time frequency resource.
As another non-limiting example, the reserved resource is a time-frequency resource of a PDCCH, and the second determining module 42 may include: a fourth determining submodule 424, adapted to determine a symbol of the wake-up signal as a collision part of the wake-up signal when the symbol completely overlaps or partially overlaps with a time-frequency resource of the PDCCH.
As another non-limiting example, the reserved resource is a time-frequency resource of a channel state information reference signal, and the second determining module 42 may include: a fifth determining submodule 425 adapted to determine a symbol of the wake-up signal as a collision part of the wake-up signal when the symbol completely overlaps or partially overlaps with a time-frequency resource of a channel state information reference signal.
In a specific implementation, the network may configure a maximum duration for transmitting the wake-up signal, where the time domain resource of the wake-up signal is 14 symbols in a single timeslot or 12 symbols in the single timeslot that are ordered last, and the wake-up signal is repeatedly transmitted within the maximum duration.
Wherein the parameter set of the wake-up signal may use a parameter set of BWP or may use a parameter set of a sync signal block.
For more details on the working principle and working mode of the collision solving device 4, reference may be made to the description in fig. 2, and details are not repeated here.
The signaling interaction between the user equipment and the network (e.g., NR base station) employing embodiments of the present invention is further described below in conjunction with a typical application scenario.
In a typical application scenario, referring to fig. 5, after the ue 1 accesses the base station 2 in the network, the base station 2 may first perform operation s1, that is, determine time-frequency resources of the wake-up signal. And if the time-frequency resource of the wake-up signal collides with the reserved resource, determining a collision solution, namely determining to adopt a collision part for delaying sending the wake-up signal, or determining to adopt a collision part for sending the wake-up signal by punching, or discarding the collision part of the wake-up signal.
Thereafter, the base station 2 may perform operation s2, i.e. if it is determined to transmit the collision part of the wake-up signal with postponing or to transmit the collision part of the wake-up signal with puncturing, the base station 2 may postpone transmitting the collision part of the wake-up signal with puncturing. It should be noted that if the base station 2 determines to discard the collision part of the wake-up signal, no information is sent to the user equipment 1.
Finally, the user equipment 1 may determine whether the wake-up signal collides with the reserved resource after detecting the wake-up signal, and if so, the user equipment 1 may perform operation s3, namely, postponing receiving the collided part of the wake-up signal, or puncturing the collided part of the wake-up signal, or ignoring the collided part of the wake-up signal.
For more contents of the working principles and working modes of the user equipment 1 and the base station 2 in the application scenario shown in fig. 5, reference may be made to the related descriptions in fig. 1 and fig. 2, which are not repeated herein.
Further, the embodiment of the present invention further discloses a storage medium, on which a computer instruction is stored, and when the computer instruction runs, the technical solution of the collision solution method for the wake-up signal described in the embodiments shown in fig. 1 and fig. 2 is executed. Preferably, the storage medium may include a computer-readable storage medium such as a non-volatile (non-volatile) memory or a non-transitory (non-transient) memory. The computer readable storage medium may include ROM, RAM, magnetic or optical disks, and the like.
Further, an embodiment of the present invention further discloses a terminal, which includes a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and the processor executes the technical solution of the collision solution method for the wake-up signal in the embodiment shown in fig. 1 when running the computer instruction. In particular, the terminal may be a user equipment, e.g., an NR UE.
Further, an embodiment of the present invention further discloses a base station, which includes a memory and a processor, where the memory stores a computer instruction capable of being executed on the processor, and the processor executes the technical solution of the collision solution method for the wake-up signal in the embodiment shown in fig. 2 when executing the computer instruction. Specifically, the base station may be an NR base station (e.g., a gNB).
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (23)
1. A collision resolution method for a wake-up signal, comprising:
detecting a wake-up signal;
when the time frequency resource of the wake-up signal collides with the reserved resource, determining the collision part of the wake-up signal based on the time frequency resource at the symbol level;
postponing receiving a colliding portion of the wake-up signal.
2. The method of claim 1, wherein the reserved resource is a time-frequency resource of a synchronization signal block, and wherein the determining the collision part based on the symbol-level time-frequency resource comprises:
and when the symbol of the wake-up signal is completely or partially overlapped with the time frequency resource of the synchronous signal block, determining the symbol as the collision part of the wake-up signal.
3. Method for collision resolution of a wake-up signal according to claim 1, wherein the reserved resources are time-frequency resources of a set of search spaces and a corresponding set of control resources, and wherein the determining the collision part of the wake-up signal based on the symbol-level time-frequency resources comprises:
and when the symbol of the wake-up signal is completely or partially overlapped with the time frequency resource of the search space set and the corresponding control resource set, determining the symbol as the collision part of the wake-up signal.
4. Method for collision resolution of wake-up signals according to claim 3, characterized in that the time-frequency resources of the set of search spaces and the corresponding set of control resources are selected from the group consisting of: searching time-frequency resources of the space set0 and the corresponding control resource set 0; time frequency resources of the common search space set and the corresponding control resource set 0; the time-frequency resources of the common search space set and the corresponding other control resource set except control resource set 0.
5. The method of claim 1, wherein the reserved resource is a rate matching resource, and wherein the determining the collision portion of the wake-up signal based on the symbol-level time-frequency resource comprises:
and when the symbol of the wake-up signal is completely or partially overlapped with the rate matching time frequency resource, determining the symbol as a collision part of the wake-up signal.
6. The method of claim 1, wherein the reserved resource is a time-frequency resource of a PDCCH, and wherein determining the collision portion of the wake-up signal based on the symbol-level time-frequency resource comprises:
and when the symbol of the wake-up signal is completely or partially overlapped with the time-frequency resource of the PDCCH, determining the symbol as a collision part of the wake-up signal.
7. The method of claim 1, wherein the reserved resource is a time-frequency resource of a channel state information reference signal, and wherein the determining the collision portion of the wake-up signal based on the symbol-level time-frequency resource comprises:
and when the symbol of the wake-up signal is completely or partially overlapped with the time frequency resource of the channel state information reference signal, determining the symbol as the collision part of the wake-up signal.
8. Method for collision resolution of wake-up signal according to any of claims 1 to 7, characterized in that the network configures a maximum duration for transmitting the wake-up signal, the time domain resource of the wake-up signal is 14 symbols in a single slot or the last 12 symbols in a single slot, and the wake-up signal is repeatedly received within the maximum duration.
9. Method for collision resolution of a wake-up signal according to any of claims 1 to 7, characterized in that the parameter set of the wake-up signal uses a BWP based parameter set or uses a parameter set of a synchronization signal block.
10. A collision resolution method for a wake-up signal, comprising:
determining time-frequency resources of the wake-up signal;
when the time frequency resource of the wake-up signal collides with the reserved resource, determining the collision part of the wake-up signal based on the time frequency resource at the symbol level;
postponing sending or discarding the colliding portion of the wake-up signal.
11. The method of claim 10, wherein the reserved resource is a time-frequency resource of a synchronization signal block, and wherein determining the collision portion of the wake-up signal based on the symbol-level time-frequency resource comprises:
and when the symbol of the wake-up signal is completely or partially overlapped with the time frequency resource of the synchronous signal block, determining the symbol as the collision part of the wake-up signal.
12. Method for collision resolution of a wake-up signal according to claim 10, wherein the reserved resources are time-frequency resources of a set of search spaces and a corresponding set of control resources, and wherein the determining the collision part of the wake-up signal based on the symbol-level time-frequency resources comprises:
and when the symbol of the wake-up signal is completely or partially overlapped with the time frequency resource of the search space set and the corresponding control resource set, determining the symbol as the collision part of the wake-up signal.
13. Method for collision resolution of a wake-up signal according to claim 12, characterized in that the time-frequency resources of the set of search spaces and the corresponding set of control resources are selected from the group consisting of: searching time-frequency resources of the space set0 and the corresponding control resource set 0; time frequency resources of the common search space set and the corresponding control resource set 0; the time-frequency resources of the common search space set and the corresponding other control resource set except control resource set 0.
14. The method of claim 10, wherein the reserved resource is a rate matching resource, and wherein the determining the collision portion of the wake-up signal based on the symbol-level time-frequency resource comprises:
and when the symbol of the wake-up signal is completely or partially overlapped with the rate matching time frequency resource, determining the symbol as a collision part of the wake-up signal.
15. The method of claim 10, wherein the reserved resource is a time-frequency resource of a PDCCH, and wherein the determining the collision portion of the wake-up signal based on the symbol-level time-frequency resource comprises:
and when the symbol of the wake-up signal is completely or partially overlapped with the time-frequency resource of the PDCCH, determining the symbol as a collision part of the wake-up signal.
16. The method of claim 10, wherein the reserved resource is a time-frequency resource of a channel state information reference signal, and wherein the determining the collision portion of the wake-up signal based on the symbol-level time-frequency resource comprises:
and when the symbol of the wake-up signal is completely or partially overlapped with the time frequency resource of the channel state information reference signal, determining the symbol as the collision part of the wake-up signal.
17. Method for collision resolution of a wake-up signal according to any of claims 10 to 16, wherein the network configures a maximum duration for transmitting the wake-up signal, the time domain resource of the wake-up signal is 14 symbols in a single slot or the last 12 symbols in a single slot, and the wake-up signal is repeatedly transmitted within the maximum duration.
18. Method for collision resolution of a wake-up signal according to any of the claims 10 to 16, characterized in that the parameter set of the wake-up signal uses the parameter set of BWP or uses the parameter set of the synchronization signal block.
19. A collision resolution apparatus for a wake-up signal, comprising:
the detection module is suitable for detecting the wake-up signal;
the determining module is suitable for determining a collision part of the wake-up signal based on the time frequency resources at the symbol level when the time frequency resources of the wake-up signal collide with the reserved resources;
a collision resolution module adapted to defer receiving a collision portion of the wake-up signal.
20. A collision resolution apparatus for a wake-up signal, comprising:
the first determining module is suitable for determining time-frequency resources of the wake-up signal;
the second determining module is suitable for determining a collision part of the wake-up signal based on the time frequency resources at the symbol level when the time frequency resources of the wake-up signal collide with the reserved resources;
a collision resolution module adapted to defer sending or discarding a colliding portion of the wake-up signal.
21. A storage medium having stored thereon computer instructions which, when executed by a processor, perform the steps of the method for collision resolution of a wake-up signal according to any of claims 1 to 9 or claims 10 to 18.
22. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the collision resolution method for a wake-up signal according to any of claims 1 to 9.
23. A base station comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the collision resolution method for a wake-up signal according to any of claims 10 to 18.
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