CN110830197B - Resource determination method and device, communication node and storage medium - Google Patents
Resource determination method and device, communication node and storage medium Download PDFInfo
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- CN110830197B CN110830197B CN201810903862.3A CN201810903862A CN110830197B CN 110830197 B CN110830197 B CN 110830197B CN 201810903862 A CN201810903862 A CN 201810903862A CN 110830197 B CN110830197 B CN 110830197B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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Abstract
The embodiment discloses a method for determining transmission resources of signals between nodes, which is applied to a first node and comprises the following steps: determining a first set of resources to transmit a first signal; and determining a second resource set of the first node for sending the first signal from the first resource set.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for determining transmission resources of signals between nodes, a communication node, and a storage medium.
Background
The transmission of signals between the nodes can facilitate the nodes to monitor the status of the return links, so that the switching between different return links can be performed according to the status of the return links, and the robustness of signal transmission is improved.
However, in the related art, the following problems exist in the signal transmission between nodes:
firstly, signals between nodes are sent at fixed resource positions in different periods, so that the flexibility is poor, and the problem of coverage omission easily exists in the process of utilizing beam transmission;
secondly, signals between nodes sent by adjacent nodes are easy to interfere and collide with each other.
Disclosure of Invention
Embodiments of the present invention are intended to provide a method and an apparatus for determining transmission resources of inter-node signals, a communication node, and a storage medium.
The technical scheme of the invention is realized as follows: a method for determining transmission resources of signals between nodes is applied to a first node and comprises the following steps:
determining a first set of resources to transmit a first signal;
and determining a second resource set of the first node for sending the first signal from the first resource set.
Based on the above scheme, the determining a first set of resources for transmitting a first signal includes:
the first set of resources to transmit the first signal is determined according to a protocol definition or according to a configuration of the second node.
Based on the above scheme, the method further comprises:
receiving high-level configuration information for the first set of resources from the second node; the high-level configuration information includes: configuration of the second node.
Based on the above scheme, the determining a second resource set from the first resource set, where the second resource set is used by the first node to transmit the first signal, includes:
and determining the second resource set from the first resource set according to the resource of the second node for sending the first signal.
Based on the above scheme, the resource for the second node to transmit the first signal is orthogonal to the resource for the first node to transmit the first signal in the time domain.
Based on the above scheme, the determining a second resource set from the first resource set, where the second resource set is used by the first node to transmit the first signal, includes:
and determining a second resource set of the first node for sending the first signal from the first resource set according to the identifier of the first node.
Based on the above scheme, the determining, from the first resource set according to the identifier of the first node, a second resource set in which the first node transmits a first signal includes:
and determining the second resource set from the first resource set according to the first corresponding relation between the identifier of the first node and the resource.
Based on the above scheme, the determining the second resource set from the first resource set according to the first corresponding relationship between the identifier of the first node and the resource includes:
determining the second resource set from the first resource set according to the first corresponding relation and the sequence of the current first interval in the second interval; wherein the second interval includes at least two of the first intervals; wherein the first interval and the second interval are: time intervals and/or frequency domain intervals.
Based on the scheme, the second resource sets of the same first node in the two adjacent second intervals are the same,
and/or
And the second resource sets of the same first node in two first intervals in one second interval are the same or different.
Based on the above scheme, the determining, from the first resource set according to the identifier of the first node, a second resource set in which the first node transmits a first signal includes:
determining the initial resource position of sending the first signal in a first interval in a second interval according to the second corresponding relation between the identifier of the first node and the resource;
determining the starting resource position of the current first interval in the second interval from the first resource set according to the starting resource position and the offset of the previous first interval;
wherein the second interval includes: at least two of the first intervals;
the first and second spacings are: time intervals and/or frequency domain intervals.
Based on the scheme, the second resource sets of the same first node in the two adjacent second intervals are the same;
and/or
And the second resource sets of the same first node in two first intervals in one second interval are the same or different.
Based on the above scheme, the determining, from the first resource set, a second resource set in which the first node transmits the first signal includes:
and determining the second resource set from the first resource set according to the hop count of the first node.
Based on the above scheme, the first signal is at least one of the following:
a synchronization signal;
a channel state information reference signal;
detecting a reference signal;
a signal is found.
Based on the above scheme, the first resource set includes: one or more resources;
the second set of resources comprises: one or more resources.
A method for determining transmission resources of signals between nodes is applied to a second node and comprises the following steps:
and configuring resources for the second node to transmit the first signal.
Based on the above scheme, the method further comprises:
the configuration of the second node is sent to the first node via the higher layer configuration information.
A communication node, comprising:
a transceiver for transceiving information;
a memory for information storage;
and the processor is respectively connected with the transceiver and the memory, and is used for respectively controlling the transceiver and the memory by executing the computer program stored in the memory and realizing the method for determining the transmission resource of the signal between the nodes provided by one or more technical schemes.
A computer storage medium having stored thereon computer-executable instructions; after being executed, the computer-executable instructions can implement a method for determining transmission resources of signals between nodes provided by one or more of the foregoing technical solutions.
According to the technical scheme provided by the embodiment of the invention, the resource of the first node for sending the first signal is not fixed in advance, but the second resource set for sending the first signal is selected according to the first resource set, so that the flexibility is high and the problem of coverage omission caused by fixed transmission can be reduced compared with the resource for sending the first signal in fixed configuration. On the other hand, the second resource set used for sending the first signal is selected from the first resource set, so that the same resource selected among the nodes can be flexibly avoided for transmitting the first signal, the mutual interference and collision of signal transmission are reduced, and the signal quality of the first signal transmission is improved.
Drawings
Fig. 1 is a schematic diagram of an access backhaul integrated network according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a first method for determining transmission resources of signals between nodes according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a second method for determining transmission resources of signals between nodes according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a third method for determining transmission resources of signals between nodes according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a second set of resources determined using a method according to an embodiment of the invention;
fig. 6 is a schematic structural diagram of a communication node according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail with reference to the drawings and the specific embodiments of the specification.
In a Long Term Evolution (LTE) system, a wireless backhaul link may support a relay technology, and indirectly access a limited network using a relay node.
In a fifth generation mobile 5G high frequency application scenario, some techniques of relaying may be followed, but in view of the density of the deployment scenario, 5G increases the support for multi-hop and multi-connection scenarios.
An Integrated Access and Backhaul (IAB) technology can add a Backhaul function on the basis of realizing an Access function by an Access node; in this way, when an access node (e.g., a high-frequency access node supporting high-frequency communication) is deployed, a backhaul function can be implemented by using a wireless link without connecting an optical fiber to a core network. The high frequency communication here may be: communication with a carrier frequency higher than a preset value; for example, the high frequency carrier here may be: a carrier with a frequency higher than 1 MHz. For another example, the high frequency carrier may be: not lower than 1MHz and lower than 400 MHz.
The multi-hop backhaul link is: the backhaul link from a node where a terminal accesses the network to a hosting base station with a fiber connection needs to go through 2 or more wireless backhaul links. The backhaul link of UE 3 as shown in fig. 1 is a multi-hop link.
Multi-connection backhaul link: the reference to a node is to keep connection with multiple nodes, such as IAB node (i) and node (ii) in fig. 1, when connecting with a Donor base station (Donor gbb), if the nodes can keep connection with each other, multiple backhaul links are connected in parallel to form a multi-connection backhaul link.
The IAB node (C) can simultaneously keep the connection with the node (I) and the node (II) and also be a multi-connection return link. The multi-hop return link application can improve the coverage range of high frequency, and the multi-hop return link can be quickly switched to another link for communication when one link is shielded, so that the robustness of a high-frequency system is improved.
A Donor base station/node (Donor gbb/node, DgNB) is configured with an anchor point of a fiber-optic connected core network.
An IAB node (IAB node) is not configured with a node that has no fiber connection and core network, but can backhaul over a wireless link, and can provide access functionality.
A superior node/parent node (mothernode) may provide a node for wireless backhaul for a certain node, for example, in fig. 1, the parent node of the first node is DgNB, or may also be the second node; the parent node of the node (c) is the node (r) and/or the node (c).
A lower node/Child node (Child node) may be a node that receives backhaul or access service, such as in fig. 1, a node (c) is a Child node of a node (r) and/or a node (c).
An access link, which provides a link of an access function, such as a link between the DgNB and the UE 1 in fig. 1; or a link between the IAB node (r) and the UE 2; or the link between the IAB node and the UE 3 is an access link.
A backhaul link, which provides a backhaul function, such as a link between NB and IAB nodes (i) and (ii) in fig. 1; a link between IAB nodes (i) and (ii); and the links between the IAB nodes I and II and the node III are all return links.
The access users may be: the user accessing the network to obtain service, UE 1, UE 2, and UE 3 shown in fig. 1, may access to the DgNB, or may access to the IAB node.
The backhaul link of node (r) is directly connected to the DgNB, but it is desirable to have the ability to monitor the link with node (r).
The backhaul link of node (c) is directly connected to the DgNB, but it is desirable to have the ability to monitor the link with node (c).
The return link of node c is connected to node c, but it is desirable to have the ability to monitor the link with node c.
The method provided by the embodiment of the invention can be applied to the network consisting of one or more backhaul links. The first node and the second node related in this embodiment may be nodes that construct the backhaul link, but are not limited to the nodes that construct the backhaul link, and may also be other nodes; in summary, the technical solution provided by the embodiment of the present invention is not limited to the application scenario or the network shown in fig. 1.
As shown in fig. 2, the present embodiment provides a method for determining transmission resources of signals between nodes, which is applied to a first node, and includes:
step S110: determining a first set of resources to transmit a first signal;
step S120: and determining a second resource set of the first node for sending the first signal from the first resource set.
In this embodiment, the method for determining transmission resources of inter-node signals is applied to a first node, where the first signal may be any signal transmitted between nodes. The first node and the second node may be various nodes in a communication network that do not directly establish a wired connection link, for example, the first node and the second node may be wireless relay nodes. The wireless relay node may comprise an IAB node. The first node and the second node in this embodiment may be various Integrated Access and Backhaul (IAB) nodes.
The first signal may include at least one of the following signals transmitted between nodes
A synchronization signal;
a channel state information reference signal;
detecting a reference signal;
a signal is found.
For example, taking the first node and the second node as relay nodes for illustration, the first signal transmitted between two relay nodes may include at least one of the following:
a synchronization signal transmitted between the source node and the relay node;
a channel state information reference signal transmitted between a source node and a relay node;
sounding reference signals transmitted between a source node and a relay node;
a discovery signal transmitted between a source node and a relay node;
a synchronization signal transmitted between relay nodes;
channel state information reference signals transmitted between relay nodes;
sounding reference signals transmitted between relay nodes;
a discovery signal transmitted between relay nodes;
a synchronization signal transmitted between the target node and the relay node;
a channel state information reference signal transmitted between the target node and the relay node;
a sounding reference signal transmitted between the target node and the relay node;
a discovery signal transmitted between the target node and the relay node.
The source node here may be a base station; the target node may be a network element of a core network to which the base station is accessed.
The synchronization signal is used for synchronization between nodes, and the channel state information reference signal is used for monitoring the channel state before the node nodes; the sounding reference signal is used to provide a reference for selective scheduling of carrier frequencies used in transmission.
The discovery signals may be used to discover each other.
In this embodiment, the first node determines a first resource set in advance, and then selects all or part of the resources from the first resources as the second resource set. And resources in the second set of resources are used for the first node to transmit the first signal. For example, there are N resources in the second set of resources, which may be used for the first node to transmit the first signal.
The first set of resources each include: one or more resources; the second set of resources each include: one or more resources.
The resources may include at least one of:
time domain resources;
a frequency domain resource;
and (4) sequence codes.
Both the first set of resources and the second set of resources may comprise one or more resources, e.g., one or more frequency domain resources, one or more time domain resources, or one or more sequence codes.
One of the time domain resources may include: one or more symbols, one or more slots, one or more subframes, etc.
The frequency domain resources may include: one or more carriers or subcarriers.
The sequence code can be an orthogonal code used in code division multiplexing; such as an orthogonal mask in an orthogonal code.
The second set of resources includes resources from the first set of resources. The step S120 may be: selecting one or more resources from the first set of resources to construct the second set of resources.
Therefore, the resource for the first node to send the first signal is limited in the second resource set, the second resource sets of different nodes are different, and the second resource set is determined from the first resource set and is not fixedly set in advance any more. In the second aspect, because the second resource set is determined from the first resource set, the node is not required to avoid selecting the same resource for transmitting the first signal, and the problem of interference caused by the fact that the second resource set of the node is the same and the signal is transmitted by using the same resource is reduced. In some embodiments, as shown in fig. 3, the step S110 may include:
step S111: the first set of resources to transmit the first signal is determined according to a protocol definition or according to a configuration of the second node.
The protocol may be various types of communication protocols, and a node configured with a communication protocol may determine, according to the definition of the communication protocol, a first set of resources for itself to transmit the first signal.
In another embodiment, the first node is according to a configuration of the second node. To avoid interference, the second node configures the first set of resources of the first node. The second node here may be an upstream node or a downstream node of the first node. Here, upstream or downstream is determined according to the data transmission direction. The upstream node may be: the source node is closer to the access network and the user for direct information transmission; the downstream node is closer to the target node.
The configuration of the second node may be: various configuration information sent by the second node is carried, for example, physical layer configuration information and/or higher layer configuration information that may be sent by the second node. The high layer configuration information may include: configuration information carried by signaling at a network architecture level above the physical layer, such as Radio Resource Control (RRC) signaling or Media Access Control (MAC) signaling. The physical layer configuration information may be configuration information carried by physical layer signaling.
For example, as shown in fig. 3, the method further comprises:
step S100: receiving high-level configuration information for the first set of resources from the second node. The high-level configuration information includes: configuration of the second node.
In this embodiment, it is equivalent to the first node receiving the configuration of the second node directly from the second node through the higher layer configuration information. In other embodiments, the first node may also receive the configuration of the second node indirectly from other nodes, not limited to directly obtaining the configuration of the second node by receiving higher-layer configuration information from the second node.
In some embodiments, the step S120 may include:
and determining the second resource set from the first resource set according to the resource of the second node for sending the first signal.
In some embodiments, the second node may also send the first signal, and according to the resource where the second node sends the first signal, in order to avoid interference caused by selecting the same resource to send the first signal, in this embodiment, the second node may determine the second set of resources based on the resource.
For example, if the resource of the second node that transmits the first signal is not located in the first resource set, the second node may determine the second resource set from the entire first resource set at will or according to a preset determination policy.
For another example, if the resource for the second node to send the first signal is located in the first resource set, the resource for the second node to send the first signal is removed from the first resource set, and then the second resource set is determined from the first resource set after the resource for the second node to send the first signal is removed.
The first node may know, through blind detection, the resource of the second node to send the first signal, may also directly extract, from various signaling of the second node, the resource of the second node to send the first signal, and may also indirectly receive, from other nodes, the resource of the second node to send the first signal; there are many ways to implement the method, not limited to any of the above.
In some embodiments, the resources on which the second node transmits the first signal are orthogonal in the time domain to the resources on which the first node transmits the first signal. And the time domain orthogonality means that the resource of the first node for transmitting the first signal and the resource of the second node for transmitting the first signal are not overlapped in the time domain. I.e. the time domain resources used by the first node and the second node for transmitting said first signal are different.
In some embodiments, the step S120 may include:
and determining a second resource set of the first node for sending the first signal from the first resource set according to the identifier of the first node.
In this embodiment, the identifier of the first node may be various types of identifier information, for example, a node serial number of the first node, or a cell serial number of a cell formed by the first node. Different nodes have different node serial numbers and different cells have different cell serial numbers. In this embodiment, a second resource set, in which the first node transmits the first signal, is determined from the first resource set according to the identifier of the first node.
For example, a plurality of resources are configured in the first resource set, and the first node selects one or more resources having an association relationship with the node identifier according to its node identifier to construct the second resource set.
For example, two specific alternatives are provided below:
the first alternative is as follows:
in some embodiments of the present invention, the,
the step S120 may include:
and determining the second resource set from the first resource set according to the first corresponding relation between the identifier of the first node and the resource.
In this embodiment, the identifier of the first node has a first corresponding relationship with the resource. As such, step S120 may include: and selecting the resources meeting the first corresponding relation from the first resource set, and constructing a second resource set of the resource.
For example, there are S1 resources in the first resource set, and there are S2 first nodes that need to equally divide S1 resources; according to the node sequence numbers of the S2 first nodes, the corresponding first nodes may sequentially select the resources belonging to the corresponding first node from the S1 resources, thereby constructing the second resource set.
In some embodiments, the determining the second set of resources from the first set of resources according to the first correspondence between the identifier of the first node and the resource includes:
determining the second resource set from the first resource set according to the first corresponding relation and the sequence of the current first interval in the second interval; wherein the second interval includes at least two of the first intervals; wherein the first interval and the second interval are: time intervals and/or frequency domain intervals.
In the present embodiment, a plurality of first intervals constitute the second interval. The first interval and the second interval herein may be intervals in time, and/or intervals in the frequency domain. For example, taking the time interval as an example, the first interval and the second interval are both time intervals, and the time intervals correspond to a time period and other time-domain lengths, for example, one or more radio frames. Taking the interval in the frequency domain as an example, the first interval and the second interval may both be frequency domain intervals. The frequency domain interval may be: the spacing between the frequencies of the carriers.
In some embodiments, the second interval may be a periodic interval, e.g., a time domain period or a frequency domain period.
In this embodiment, the second resource set may be directly determined from the first resource set according to the first corresponding relationship and the offset corresponding to the order of the current first interval in the second interval. For example, the second intervals include M1 first intervals; if the current first interval is the mth first interval, the offset between two adjacent first intervals is s; the resource index selected from the first set of resources to constitute the second set of resources may be { x, … y } + s × m. If s is equal to 1, it means that the offset of one resource is performed at a time. The { x, … y } is an index of the second set of resources for the first interval within a second interval determined according to the first correspondence. The { x, … y } represents a resource index of one or more resources. In some embodiments, the second resource sets of the same first node in two adjacent second intervals are the same, and/or the second resource sets of the same first node in two first intervals in one second interval are the same or different.
The second option is: in some embodiments, the step S120 may include:
determining the initial resource position of sending the first signal in a first interval in a second interval according to the second corresponding relation between the identifier of the first node and the resource;
determining the starting resource position of the current first interval in the second interval from the first resource set according to the starting resource position and the offset of the previous first interval;
wherein the second interval includes: at least two of the first intervals;
the first and second spacings are: time intervals and/or frequency domain intervals.
And determining the starting resource position of a first interval in the first interval according to the second corresponding relation between the identifier of the first node and the resource, wherein if a plurality of resources are included in one first interval, the starting resource position corresponding to the starting resource and the ending resource position corresponding to the ending resource can be included in addition to the starting resource position corresponding to the starting resource, or the middle resource position of the middle resource between the starting resource and the ending resource. The other resources except the initial resource in a first interval may be determined by the second node according to a resource determination policy, for example, a random policy selects one or more initial resources corresponding to the initial resource position from the first resource set, and the initial resources are jointly constructed as the second resource set.
For another example, different first intervals in the second interval are provided with offsets of different resources; once the starting resource location of each first interval is determined, all resource locations in the first interval can be determined according to the offset, so as to determine the second resource set in the current first interval. If the first interval is the second resource set corresponding to the first interval determined based on the starting resource position, the offset determined by the second resource set in one first interval is the same as or different from the offset determined by the starting resource position between two first intervals. For example, in some embodiments, the offset determined for the second set of resources in one first interval is less than the offset determined for the starting resource location in two first intervals.
In some embodiments, the second resource sets of two adjacent second intervals of the same first node are the same;
and/or
And the second resource sets of the same first node in two first intervals in one second interval are the same or different.
In some embodiments, the step S120 may include:
and determining the second resource set from the first resource set according to the hop count of the first node.
A transmission path may comprise multiple hops, with the number of hops being determined by the number of nodes traversed. In this embodiment, the first node may determine one or more resources from the first resource set to construct the second resource set according to the hop count of the first node. For example, the number of pieces and the resource may have a plurality of correspondences, e.g., a third correspondence and a fourth correspondence. In this embodiment, the third corresponding relationship may be similar to the first corresponding relationship, and the fourth corresponding relationship may be the same as the second corresponding relationship. That is, the first corresponding relationship and the third corresponding relationship may both be: the method is used for determining the corresponding relation of all resources in one second resource set at one time. The second correspondence and the fourth correspondence may both be: the method is only used for determining the corresponding relation of the starting resource positions of the starting resources in one second resource set, and if the number of the resources included in the second resource set is more than one, the second node determines other resources according to the determination strategy of the second node.
In the embodiment of the present invention, the resource location may be represented by a resource index of the corresponding resource, or an ordering of the resource in the first resource set. The ordering of the resources in the first resource set may be performed according to the chronological order of the resources, and/or according to the frequency in the frequency domain.
In some embodiments, the determining the second resource set from the first resource set according to the hop count of the first node may include:
selecting one or more resources from the first resource set to form the second resource set according to at least one of the following determined relationships of resource indexes:
Index{x1，…y1}+h*A；
0＝Index{x2，…y2}mod(h)；
wherein h represents the hop count of the corresponding first node; a represents a coefficient of the number of hops.
Of course, the above are merely examples, and the specific implementation is various, and is not limited to any one of the above.
As shown in fig. 4, the present embodiment provides a method for determining transmission resources of signals between nodes, which is applied to a second node, and includes:
step S200: and configuring the resource of the second node for transmitting the first signal. The configuration may be the configuration of the second node, and may be used to determine a first set of resources for the first node to transmit the first signal.
In some embodiments, the method further comprises:
step S210: the configuration of the second node is sent to the first node via the higher layer configuration information.
The related description of the high-level configuration information can be referred to the foregoing embodiments, and will not be repeated here.
The present embodiment provides an apparatus for determining transmission resources of an inter-node signal, which is applied to a first node, and includes:
a first determining module for determining a first set of resources to transmit a first signal;
a second determining module, configured to determine, from the first resource set, a second resource set in which the first node transmits the first signal.
In some embodiments, the first determining module is specifically configured to determine the first set of resources to transmit the first signal according to a protocol definition or according to a configuration of the second node.
In some embodiments, the apparatus further comprises:
a receiving module, configured to receive high-level configuration information of the first resource set from the second node; the high-level configuration information includes: configuration of the second node.
In some embodiments, the second determining module is configured to determine the second set of resources from the first set of resources according to a resource of the second node for transmitting the first signal.
In some embodiments, the resources on which the second node transmits the first signal are orthogonal in the time domain to the resources on which the first node transmits the first signal.
In some embodiments, the second determining module is specifically configured to determine, from the first resource set, a second resource set in which the first node transmits the first signal, according to the identifier of the first node.
In some embodiments, the second determining module is configured to determine the second set of resources from the first set of resources according to the first corresponding relationship between the identifier of the first node and the resource.
In other embodiments, the second determining module is specifically configured to determine the second resource set from the first resource set according to the first corresponding relationship and an order of the current first interval in the second interval; wherein the second interval includes at least two of the first intervals; wherein the first interval and the second interval are: time intervals and/or frequency domain intervals.
In some embodiments, the second resource sets of the same first node in two adjacent second intervals are the same, and/or the second resource sets of the same first node in two first intervals in one second interval are the same or different.
In some embodiments, the second determining module is specifically configured to determine, according to the second corresponding relationship between the identifier of the first node and the resource, a starting resource location for sending the first signal in a first interval within a second interval; determining the starting resource position of the current first interval in the second interval from the first resource set according to the starting resource position and the offset of the previous first interval; wherein the second interval comprises: at least two of the first intervals; the first and second spacings are: time intervals and/or frequency domain intervals.
In other embodiments, the second resource sets of two adjacent second intervals of the same first node are the same; and/or the second resource sets of the same first node in two first intervals in one second interval are the same or different.
The second determining module is specifically configured to determine the second resource set from the first resource set according to the hop count of the first node. In some embodiments, the first signal is at least one of: a synchronization signal; a channel state information reference signal; detecting a reference signal; a signal is found.
In some embodiments, the first set of resources comprises: one or more resources; the second set of resources comprises: one or more resources.
The embodiment of the present invention further provides another apparatus for determining transmission resources of signals between nodes, which is applied to a second node, and includes:
and the configuration module is used for configuring the resource of the second node for sending the first signal.
In other embodiments, the apparatus further comprises:
and the sending module is used for sending the configuration of the second node to the first node through the high-level configuration information.
Example 1:
to ensure discovery signals that IAB nodes can discover each other. The discovery signal may be the aforementioned first signal transmitted between IAB nodes. The discovery signal is not only used for discovery between IAB nodes, but may also be combined with other functions, e.g. the discovery signal may also be: synchronization signals for synchronization between IAB nodes. For another example, the discovery signal may also be: the channel state information reference signal used for channel state detection between IAB nodes, and the discovery signal may be used as a sounding reference signal, for example.
Referring to fig. 5, the present solution considers: the IAB node determines the position of a discovery signal resource pool according to the hop number; within the resource pool, the resource for transmitting the synchronization signal is determined based on the criterion of cyclic shift in different periods according to the Cell identity (Cell ID) to ensure that each IAB node can transmit all the Synchronization Signal Blocks (SSBs).
The method comprises the following steps: the method comprises the steps that an SSB resource pool and/or a configured SSB resource pool are predefined by a protocol, and a plurality of different TDM SSB burst sending resource (burst set) positions are contained in the SSB resource pool;
for example: configuring each Nms to comprise an SSB resource pool, wherein each SSB resource pool comprises L SSB burst sets; the default value of Nms (default value) may be 20ms, or 40ms, etc
For example: every Nms, there is a fixed 5ms SSB resource pool, and the 5ms contains 1 SSB burst set
Step two: determining which SSB burst sets in the SSB resource pool to adopt according to the IAB node hop count
For example: SSB burst set 1 is adopted for odd hops, and SSB burst set 2 is adopted for even orders; (there is a branch of odd-even jumps only when the tree is connected)
For example: SSB burst set of odd hop number is located in odd frame, SSB burst set of even order is located in even frame
For example: and dividing the resource pool into two parts, and selecting a part different from the previous hop to send the discovery signal by the next hop IAB node according to the position of the discovery signal of the previous hop IAB node.
Step three: IAB nodes (nodes) with the same hop count perform mutual detection by using muting (muting), and muting patterns (muting patterns) are related to Cell IDs and have different cyclic shifts in different periods. The Cell ID here corresponds to the aforementioned identification of the first node. For example: the muting pattern may be related to a cell ID;
the specific muting granularity may include SSB groups (groups) of 8 SSBs, or 1 SSB, or 64 SSBs, etc.;
the circulation of the positions of the Muting can adopt a cyclic displacement mode;
further, the cyclic shift mode can be further randomized by the cell ID, with emphasis on granularity smaller than 64 SSBs.
Example 2:
the present example provides a resource configuration and determination method, comprising:
the protocol defines resources for transmitting the first signal, or the second node configures the resources for transmitting the first signal; the first node determines the resources and/or set of resources actually available for transmitting the first signal.
Higher layer configuration information for the first node may be obtained from a second node.
The first node determines the resources and/or set of resources actually available for transmitting the first signal, characterized in that the resources and/or set of resources available for the first node to transmit the first signal are determined based on the hop count of the first node.
The first node determines the resources and/or set of resources actually available for transmitting the first signal, characterized in that the resources and/or set of resources available for the first node to transmit the first signal are determined from the first signal transmission resources of the second node.
The resources of the first node transmitting the discovery signal are time orthogonal to the resources of the second node transmitting the discovery signal.
The first node determines the resources and/or set of resources actually available for transmitting the first signal and, from the first ID of the first node, determines the resources and/or set of resources available for the first node to transmit the first signal.
And the first signal transmission resource of the first node is that the transmission starting position of the first signal is determined by the first ID in different periods.
According to the method of the independent claim, the first signal may be a synchronization signal, and/or a channel state information reference signal, and/or a sounding reference signal.
The present example designs a specific sending resource configuration and determination method for discovery signals of different IAB nodes, and ensures that the sending of discovery signals between two adjacent hop nodes does not affect scheduling as much as possible, and can ensure that each node can send all 64 SSBs, thereby ensuring coverage.
As shown in fig. 6, an embodiment of the present invention provides a communication node, including:
a transceiver 110 for transmitting and receiving information;
a memory 120 for information storage;
a processor 120, connected to the transceiver and the memory, respectively, for controlling the transceiver and the memory, respectively, by executing the computer program stored in the memory, and implementing the aforementioned transmission resource determination method applied to the inter-node signal in the first and node or the second node; for example, as one or more of the methods shown in fig. 2-4.
The transceiver 110 may correspond to various types of antennas and may receive information and/or transmit information.
The memory 120 may include various storage media that may be used to store information, such as random access memory 120, read only memory 120, flash memory or internal memory, and the like.
The processor 120 may be various types of processors, such as a central processing unit, a microprocessor 130, a digital signal processor, an application processor, or a programmable array, and the like.
The processor 130 may be coupled to the transceiver and the memory via a bus structure such as an integrated circuit bus. The processor may implement the transmission resource determination method provided by one or more of the foregoing technical solutions through execution of a computer program, for example, as one or more of the methods shown in fig. 2 to 4.
The embodiment of the invention provides a computer storage medium, which stores computer executable instructions; the computer-executable instructions, when executed, enable the aforementioned method of determining transmission resources for inter-node signals in a first and a node or a second node, for example, as described in one or more of the methods of fig. 2-4.
The computer storage medium may include: various media capable of storing program codes, such as a removable storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk; optionally, the computer storage medium is a non-transitory storage medium.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be determined according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (17)
1. A method for determining transmission resources of signals between nodes is applied to a first node and comprises the following steps:
determining a first set of resources to transmit a first signal;
determining a second resource set of the first node for sending a first signal from the first resource set; the second set of resources of different nodes is different;
wherein the determining a second resource set from the first resource set for the first node to transmit the first signal includes: and determining the second resource set from the first resource set according to the hop count of the first node.
2. The method of claim 1,
the determining a first set of resources to transmit a first signal comprises:
the first set of resources to transmit the first signal is determined according to a protocol definition or according to a configuration of the second node.
3. The method of claim 2, further comprising:
receiving high-level configuration information for the first set of resources from the second node; the high-level configuration information includes: configuration of the second node.
4. The method of claim 1, 2 or 3,
the determining, from the first set of resources, a second set of resources for the first node to transmit the first signal includes:
and determining the second resource set from the first resource set according to the resource of the second node for sending the first signal.
5. The method of claim 4,
and the resource of the second node for transmitting the first signal is orthogonal to the resource of the first node for transmitting the first signal in the time domain.
6. The method according to claim 1 or 2,
the determining, from the first set of resources, a second set of resources for the first node to transmit the first signal includes:
and determining a second resource set of the first node for sending the first signal from the first resource set according to the identifier of the first node.
7. The method of claim 6,
the determining, according to the identifier of the first node, a second resource set from the first resource set, where the first node transmits a first signal, includes:
and determining the second resource set from the first resource set according to the first corresponding relation between the identifier of the first node and the resource.
8. The method of claim 7,
determining the second resource set from the first resource set according to the first corresponding relationship between the identifier of the first node and the resource, including:
determining the second resource set from the first resource set according to the first corresponding relation and the sequence of the current first interval in the second interval; wherein the second interval includes at least two of the first intervals; wherein the first interval and the second interval are: time intervals and/or frequency domain intervals.
9. The method of claim 8,
the second resource sets of the same first node in two adjacent second intervals are the same,
and/or
And the second resource sets of the same first node in two first intervals in one second interval are the same or different.
10. The method of claim 7,
the determining, from the first resource set according to the identifier of the first node, a second resource set in which the first node transmits a first signal includes:
determining the initial resource position of sending the first signal in a first interval in a second interval according to the second corresponding relation between the identifier of the first node and the resource;
determining the starting resource position of the current first interval in the second interval from the first resource set according to the starting resource position and the offset of the previous first interval;
wherein the second interval includes: at least two of the first intervals;
the first and second spacings are: time intervals and/or frequency domain intervals.
11. The method of claim 10,
the second resource sets of the same first node at two adjacent second intervals are the same;
and/or
And the second resource sets of the same first node in two first intervals in one second interval are the same or different.
12. The method according to claim 1 or 2,
the first signal is at least one of:
a synchronization signal;
a channel state information reference signal;
detecting a reference signal;
a signal is found.
13. The method according to claim 1 or 2,
the first set of resources comprises: one or more resources;
the second set of resources comprises: one or more resources.
14. A method for determining transmission resources of signals between nodes is applied to a second node and comprises the following steps:
configuring a resource for a second node to send a first signal; the resources for transmitting the first signal comprise a first resource set and a second resource set, and the second resource sets of different nodes are different; the second resource set is determined from the first resource set according to the hop count of the first node; and the resource of the second node for transmitting the first signal is orthogonal to the resource of the first node for transmitting the first signal in the time domain.
15. The method of claim 14,
the method further comprises the following steps:
the configuration of the second node is sent to the first node via the higher layer configuration information.
16. A communications node, comprising:
a transceiver for transceiving information;
a memory for information storage;
a processor, coupled to the transceiver and the memory, respectively, for controlling the transceiver and the memory, respectively, by executing a computer program stored on the memory, and implementing the method of any of claims 1 to 13 or 14 to 15.
17. A computer storage medium having computer-executable instructions stored thereon; the computer executable instructions, when executed, are capable of implementing the method of any one of claims 1 to 13 or 14 to 15.
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