CN111435876A

CN111435876A - Resource determination method, device, related equipment and storage medium

Info

Publication number: CN111435876A
Application number: CN201910028066.4A
Authority: CN
Inventors: 董静; 郑毅; 吴丹; 侯雪颖; 金婧
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2019-01-11
Filing date: 2019-01-11
Publication date: 2020-07-21
Anticipated expiration: 2039-01-11
Also published as: CN111435876B

Abstract

The invention discloses a resource determination method, a resource determination device, a first node, a second node and a storage medium. The method comprises the following steps: the first node determining the availability of soft (soft) resources of the second node; a backhaul link exists between the first node and a second node; the second node has a DU function; signaling availability of the soft resource to the second node; the indicated availability is used for the second node to determine the availability of soft resources matching its own capabilities.

Description

Resource determination method, device, related equipment and storage medium

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a resource determination method, an apparatus, a related device, and a storage medium.

Background

In a 5G hot spot high-capacity scene, such as a market, a square, an airport and the like, the transmission rate of downlink data can reach 300Mbps, the transmission rate of uplink data can reach 50Mbps, and the downlink capacity can reach 750Gbps/km²The uplink capacity can reach 125Gbps/km²(ii) a To support such high transmission rates and capacities, large bandwidths and dense deployments are required, and high frequency millimeter waves can meet this demand.

However, since the coverage of the high-frequency millimeter wave is limited, intensive deployment is required, and in order to reduce the dependence on the optical fiber and the cost, an Access Backhaul (IAB) technology is required, that is, a Backhaul function is added on the basis of realizing the Access function of the base station.

In an IAB scenario, from the perspective of a DU (i.e., an IAB node (without an access function of a fiber-optic connection core network)), time domain resources of a sublink include a downlink (D L), an uplink (U L), a Flexible (Flexible) resource, and an unavailable (Flexible) resource.

However, only two states of available and unavailable are given in the soft resource related art, in which case more signaling overhead is needed to indicate for the IAB node.

Disclosure of Invention

In order to solve the existing technical problem, embodiments of the present invention provide a resource determining method, apparatus, related device, and storage medium.

The technical scheme of the embodiment of the invention is realized as follows:

the embodiment of the invention provides a resource determination method, which is applied to a first node and comprises the following steps:

determining the availability of soft resources of the second node; a backhaul link exists between the first node and a second node; the second node has a DU function;

signaling availability of the soft resource to the second node; the indicated availability is used for the second node to determine the availability of soft resources matching its own capabilities.

In the foregoing solution, the determining the availability of soft resources of the second node includes:

and determining the availability of soft resources of the second node according to the receiving and sending states corresponding to the resources distributed by the return link.

In the foregoing solution, the determining the availability of soft resources of the second node according to the transceiving state corresponding to the resources allocated by the backhaul link includes:

determining the transceiving states of uplink resources, downlink resources and flexible resources in the backhaul link;

and determining the availability of soft resources of the second node according to the determined transceiving states of the uplink resources, the downlink resources and the flexible resources.

In the above scheme, the indicated availability includes uplink available, downlink available, or unavailable.

In the above scheme, the method further comprises:

receiving the capability information reported by the second node; the capability information characterizes data transmission modes supported by the second node;

the determining the availability of soft resources of the second node comprises:

and determining the availability of soft resources of the second node according to the capability information and the corresponding transceiving state of the resources allocated by the backhaul link.

In the foregoing solution, the indicating the availability of the soft resource to the second node through signaling includes:

and sending the transceiving state corresponding to the resource allocated by the return link to the second node through the signaling.

In the foregoing solution, the indicating the availability of the determined soft resource to the second node through signaling includes:

indicating the availability of the determined soft resource to the second node through signaling of layer L1 or a media access control address control element, MAC CE.

In the above solution, the capability supported by the second node is half duplex, and only supports simultaneous reception, and does not support simultaneous transmission;

alternatively, the first and second electrodes may be,

the capability supported by the second node is half duplex and supports simultaneous reception and simultaneous transmission;

alternatively, the first and second electrodes may be,

the capability supported by the second node is full duplex.

The embodiment of the invention also provides a resource determination method, which is applied to a second node and comprises the following steps:

receiving the availability of soft resources indicated by the first node; a backhaul link exists between the first node and a second node; the second node has a DU function;

and determining the availability of the soft resource matched with the self-supported capacity by using the indicated availability of the soft resource.

In the above solution, the indicated availability of soft resources is determined based on the transceiving state corresponding to the resources allocated by the backhaul link;

the determining the availability of the soft resource matched with the self-supported capacity by using the indicated availability comprises the following steps:

and determining the availability of the matched soft resource by utilizing the self-supported data transmission mode and combining the indicated availability of the soft resource.

In the above scheme, the indicated availability of soft resources includes uplink available, downlink available, or unavailable.

In the above scheme, the method further comprises:

reporting the self capability information to the first node; the capability information characterizes data transmission modes supported by the second node;

determining the indicated availability of the soft resource as the availability of the matched soft resource.

In the foregoing solution, the receiving the availability of soft resources indicated by the first node includes:

receiving a transceiving state corresponding to the resource allocated by the backhaul link and sent by the first node;

the determining the availability of the soft resource matched with the self-supported capacity by using the indicated availability of the soft resource comprises the following steps:

and determining the availability of the matched soft resource by using a data transmission mode supported by the self and combining the corresponding transceiving state of the resource allocated by the return link.

and receiving the availability of the soft resource indicated by the first node through signaling or MAC CE of L1 layer 1.

In the above scheme, the supported capability is half duplex, and only supports simultaneous reception, and does not support simultaneous transmission;

alternatively, the first and second electrodes may be,

the supported capability is half duplex and supports simultaneous reception and simultaneous transmission;

alternatively, the first and second electrodes may be,

the supported capability is full duplex.

An embodiment of the present invention further provides a resource determining apparatus, which is disposed on a first node, and includes:

a first determining unit, configured to determine availability of soft resources of a second node; a backhaul link exists between the first node and a second node; the second node has a DU function;

an indicating unit, configured to indicate availability of the soft resource to the second node through signaling; the indicated availability is used for the second node to determine the availability of soft resources matching its own capabilities.

In the foregoing solution, the first determining unit is specifically configured to:

In the above scheme, the apparatus further comprises:

a first receiving unit, configured to receive capability information reported by the second node; the capability information characterizes data transmission modes supported by the second node;

the first determining unit is specifically configured to determine, according to the capability information and in combination with the transceiving state corresponding to the resource allocated by the backhaul link, availability of the soft resource of the second node.

In the foregoing solution, the indicating unit is specifically configured to:

The embodiment of the present invention further provides a resource determining apparatus, which is disposed on a second node, and includes:

the second receiving unit is used for receiving the availability of the soft resource indicated by the first node; a backhaul link exists between the first node and a second node; the second node has a DU function;

and a second determination unit for determining the availability of the soft resource matched with the self-supported capacity by using the indicated availability of the soft resource.

and the second determining unit is used for determining the availability of the matched soft resource by using a data transmission mode supported by the second node and combining the indicated availability of the soft resource.

In the above scheme, the apparatus further comprises: a reporting unit, configured to report capability information of the second node to the first node; the capability information characterizes data transmission modes supported by the second node;

the second determining unit is specifically configured to determine that the indicated availability of the soft resource is the availability of the matched soft resource.

In the foregoing solution, the second receiving unit is specifically configured to:

the second determining unit is specifically configured to determine, by using a data transmission mode supported by the second node itself, availability of the matched soft resource in combination with a transceiving state corresponding to the resource allocated by the backhaul link.

An embodiment of the present invention further provides a first node, including: a first processor and a first communication interface; wherein the content of the first and second substances,

the first processor is used for determining the availability of soft resources of the second node; a backhaul link exists between the first node and a second node; the second node has a DU function; and signaling the availability of the soft resource to the second node using the first communication interface; the indicated availability is used for the second node to determine the availability of soft resources matching its own capabilities.

In the foregoing solution, the first processor is specifically configured to:

In the above scheme, the first communication interface is configured to receive capability information reported by the second node; the capability information characterizes data transmission modes supported by the second node;

the first processor is specifically configured to: and determining the availability of soft resources of the second node according to the capability information and the corresponding transceiving state of the resources allocated by the backhaul link.

In the foregoing solution, the first processor is specifically configured to:

An embodiment of the present invention further provides a second node, including:

the second communication interface is used for receiving the availability of the soft resource indicated by the first node; a backhaul link exists between the first node and a second node; the second node has a DU function;

and the second processor is used for determining the availability of the soft resource matched with the self-supported capacity by utilizing the indicated availability of the soft resource.

the second processor is specifically configured to: and determining the availability of the matched soft resource by using a data transmission mode supported by the second node and combining the indicated availability of the soft resource.

In the above scheme, the second communication interface is further configured to report capability information of the second node to the first node; the capability information characterizes data transmission modes supported by the second node;

the second processor is specifically configured to: determining the indicated availability of the soft resource as the availability of the matched soft resource.

In the foregoing solution, the second communication interface is specifically configured to:

the second processor is specifically configured to determine, by using a data transmission mode supported by the second node itself, availability of the matched soft resource in combination with a transceiving state corresponding to the resource allocated by the backhaul link.

An embodiment of the present invention further provides a first node, including: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is configured to execute the steps of any of the above-mentioned methods at the first node side when running the computer program.

An embodiment of the present invention further provides a second node, including: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is configured to execute the steps of any of the above-mentioned methods at the second node side when running the computer program.

An embodiment of the present invention further provides a computer storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of any one of the methods of the first node side or implements the steps of any one of the methods of the second node side.

According to the resource indicating method, the resource indicating device, the related equipment and the storage medium, the first node determines the availability of soft resources of the second node; and indicating the availability of the soft resource to the second node through signaling; a backhaul link exists between the first node and a second node; the second node has a DU function; the second node determines the availability of the soft resources matched with the self-supported capacity by using the indicated availability of the soft resources, and because the parent node indicates the availability of the soft resources to the IAB node, the IAB determines the availability of the soft resources matched with the self-supported capacity by using the indicated availability according to the self-supported capacity, the parent node does not need to know the specific resource configuration of the IAB node DU and does not need to indicate each soft resource, thereby greatly saving the signaling overhead.

Drawings

Fig. 1 is a schematic diagram of an IAB multi-hop scenario in the related art;

FIG. 2 is a schematic diagram illustrating an indication manner in the related art;

fig. 3 is a schematic flowchart of a method for determining resources at a first node side according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating a method for determining resources at a second node side according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating resource availability determined by the second node according to an embodiment of the present invention;

fig. 6 is a schematic diagram illustrating the availability of a second resource determined by a second node according to the embodiment of the present invention;

fig. 7 is a schematic diagram illustrating the availability of a third resource determined by the second node according to the embodiment of the present invention;

FIG. 8 is a flowchart illustrating a method for resource determination according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a resource determination apparatus according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of another resource determination apparatus according to an embodiment of the present invention;

FIG. 11 is a diagram illustrating a first node structure according to an embodiment of the present invention;

FIG. 12 is a diagram illustrating a second node structure according to the embodiment of the present invention;

fig. 13 is a schematic structural diagram of a resource determination system according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

In the IAB scenario, there is the following definition:

host base station/node (which may be expressed as IAB node): there is an anchor point where the optical fiber connects to the core network, such as the DgNB in fig. 1.

IAB node (which may be expressed in english as IAB node): there is no fiber connection to the core network, but backhaul can be via wireless links, and nodes that can provide access functions, such as IAB1 and IAB2 in fig. 1. In standardized studies, the access function of the IAB node is called the DU function and the backhaul function is called the MT function.

A mother node: the previous hop node of an IAB node, such as DgNB in fig. 1, is the parent node of IAB 1.

And (3) a parent link: a link between an IAB node and its parent node.

And (3) child nodes: the next hop node of an IAB node, such as IAB2 in fig. 1, is a child node of IAB 1.

A sub-link: a link between an IAB node and its child nodes.

And accessing a link: links between User Equipment (UE) and an IAB node or donor base station/node, including uplink and downlink access links, such as

links

1a, 2a and 3 in fig. 1.

A return link: links between the IAB node and the IAB child or parent node include uplink backhaul links and downlink backhaul links, such as

links

1b and 2b in fig. 1.

In the IAB scenario, with respect to resource allocation, there are the following advances in the third generation partnership project (3 GPP):

from the MT perspective, the time domain resources of the mother link include D L, U L and flexile resources, similar to R15, as shown in table 1.

From the perspective of the DU, the time domain resources of the sublinks include D L, U L, flex and not available resources, and for each of the D L, U L and flex resources, the resources are further divided into hard resources and soft resources, as shown in table 1, where the hard resources indicate that the sublinks are always available, and the soft resources indicate whether the sublinks are explicitly or implicitly controllable by the parent node.

TABLE 1

In Table 1, D represents D L, F represents Flexible, and U represents U L.

As can be seen from the above description, currently, only two states, available and unavailable, are given for the availability of soft resources in the standard, in which case, the parent node needs to know the DU resource (resource corresponding to DU function) configuration of the IAB node, and as shown in fig. 2, it needs to indicate whether available or unavailable for each of the D L-soft resource, U L-soft resource and Flexible-soft resource, respectively, and the signaling overhead is large.

Based on this, in various embodiments of the present invention, the parent node indicates the availability of soft resources to the IAB node, and the IAB determines the availability of soft resources matching its own capabilities according to its own capabilities by using the indicated availability.

By adopting the scheme of the embodiment of the invention, the parent node does not need to know the specific resource configuration of the IAB node DU and does not need to indicate each soft resource, thus greatly saving the signaling overhead.

The resource determining method provided in the embodiment of the present invention is applied to a first node, and as shown in fig. 3, the method includes:

step 301: determining the availability of soft resources of the second node;

here, a backhaul link exists between the first node and a second node; the second node has a DU functionality.

That is, the first node is a parent node and the second node is an IAB node.

From the MT perspective, the backhaul link may also be referred to as an MT-side link; accordingly, from the perspective of the DU, the link that implements the DU function may be referred to as a DU side link.

In practical application, the first node may determine the availability of soft resources of the second node according to the transceiving state of the MT-side link.

Based on this, in an embodiment, the specific implementation of this step may include:

Wherein the backhaul link would typically include D L, U L, and Flexible resources.

Based on this, the determining the availability of soft resources of the second node according to the transceiving state corresponding to the resources allocated by the backhaul link includes:

and determining the availability of the soft resource of the second node according to the determined transceiving states of the U L resource, the D L resource and the Flexible resource.

In practical application, the transceiving state may include three states, which are a receiving state, a transmitting state, and a non-transmitting and non-receiving state.

In this case, the actual transmission direction is D L reception (Rx) or no transmission, i.e. the transceiving state is a receiving state or a non-transmitting and non-receiving state, for the D L resource, the actual transmission direction is U L transmission (Tx) or no transmission, i.e. the transceiving state is a transmitting state or a non-transmitting and non-receiving state, for the U L resource, the actual transmission direction may be D L Rx or U L Tx or no transmission, i.e. the transceiving state may be a receiving state, a transmitting state or a non-transmitting and non-receiving state, for the flexile resource, and accordingly, the availability of the soft resource of the second node is determined.

In practice, the first node may also determine the availability of soft resources of the second node based on the capabilities of the second node.

Based on this, in an embodiment, the method may further include:

accordingly, the determining the availability of soft resources of the second node comprises:

In practical application, the capability supported by the second node, that is, the data transmission mode, may be any one of the following:

half duplex, and only support receiving at the same time, do not support sending at the same time;

half duplex and support simultaneous reception and simultaneous transmission;

full duplex.

Here, the support of simultaneous reception means: the MT side link and the DU side link support simultaneous reception; the non-support of simultaneous transmission means: the MT side link and the DU side link do not support simultaneous transmission; accordingly, supporting simultaneous reception and simultaneous transmission refers to: the MT-side link and the DU-side link support simultaneous reception and simultaneous transmission.

Step 302: signaling availability of the soft resource to the second node.

That is, the determined availability of soft resources of the second node is indicated to the second node by signaling.

Here, the indicated availability is used for the second node to determine the availability of soft resources matching its own capabilities.

In practical applications, when the first node determines the availability of the soft resources of the second node by using the transceiving state corresponding to the resources allocated according to the backhaul link, the indicated availability (i.e. the indicated content) may include U L available, D L available, available (all soft resources available), or unavailable (all soft resources unavailable).

In practical applications, the second node may indicate the determined availability of the soft resource of the second node through display signaling, that is, indicate the availability of the soft resource of the second node as a DU (implement DU function) through explicit signaling.

Based on this, in an embodiment, the availability of the determined soft resource may be indicated to the second node through signaling of L1 layer 1 (i.e., physical layer) or MAC CE.

In practical applications, 2 bits may be used for indication, for example, 00 indicates D L is available, 01 indicates U L is available, 10 indicates available, and 11 indicates unavailable.

Of course, the first node will select one of U L available, D L available, available and unavailable to indicate as needed, for example, when the MT side link is in a receive state, the first node determines that U L is available and therefore indicates that U L is available, and for example, when the MT side link is in a no-send and no-receive state, the first node determines that soft resources are available and therefore indicates that soft resources are available.

In practical application, when determining the availability of the soft resource of the second node, the first node may further determine only the transceiving state corresponding to the resource allocated by the backhaul link, that is, implicitly determine the availability of the soft resource of the second node, and then send the determined transceiving state to the second node, and the second node determines the availability of the soft resource matching its own capability according to the transceiving state.

Based on this, in an embodiment, the signaling the availability of the soft resource to the second node includes:

Correspondingly, an embodiment of the present invention further provides a resource determining method, which is applied to a second node, and as shown in fig. 4, the method includes:

step 401: receiving the availability of soft resources indicated by the first node;

specifically, the receiving the availability of the soft resource indicated by the first node includes:

Step 402: and determining the availability of the soft resource matched with the self-supported capacity by using the indicated availability of the soft resource.

In an embodiment, when the indicated availability of the soft resource is determined based on the transceiving state corresponding to the resource allocated by the backhaul link, the determining, by using the indicated availability, the availability of the soft resource that matches the self-supported capability includes:

Specifically, in the D L, U L and Flexible resources in the MT side link, for the D L resource, the actual transmission direction is D L Rx, or no transmission, that is, the transceiving state is the receiving state, or neither transmitting nor receiving state, for the U L resource, the actual transmission direction is U L Tx, or no transmission, that is, the transceiving state is the transmitting state, or neither transmitting nor receiving state, for the Flexible resource, the actual transmission direction may be D L Rx, or U L Tx, or no transmission, that is, the transceiving state may be the receiving state, also may be the transmitting state, or also may be neither transmitting nor receiving state, when the second node determines the availability of the matched soft resource according to the transceiving state of the MT side link, when the availability is indicated by 2 bits, there may be the following three cases:

in the first case, the capability of the device is to support half duplex, only support simultaneous reception and not simultaneous transmission

In this case, as shown in FIG. 5, the U L resource in soft resource is available when the MT link is in the receiving state, the soft resource is unavailable when the MT link is in the transmitting state, and the soft resource is available when the MT link is in the non-transmitting and non-receiving state, wherein in FIG. 5, "√" indicates available, and "×" indicates unavailable.

When indicated by 2 bits, for example, 00 indicates D L is available, 01 indicates U L is available, 10 indicates available, and 11 indicates unavailable, then for the second node, when 00 is received, it is considered an error indication (at this time, the second node considers the resource unavailable for ensuring the performance of the backhaul link), 01 is received, U L is considered available, 10 is received, it is considered available, 11 is received, and it is considered unavailable.

The second case, its own capability to support half-duplex, supports simultaneous reception and simultaneous transmission

In this case, as shown in FIG. 6, the U L resource in soft resource is available when the MT link is in the receiving state, the D L resource in soft resource is available when the MT link is in the transmitting state, and the soft resource is available when the MT link is in the non-transmitting and non-receiving states, wherein in FIG. 6, "√" indicates available and "×" indicates unavailable.

When indicated by 2 bits, such as 00 indicating D L available, 01 indicating U L available, 10 indicating available, 11 indicating unavailable, then for the second node, when 00 is received, D L is considered available, 01 is received, U L is considered available, 10 is received, it is considered available, 11 is received, an error indication is considered.

Third, its own capability to support full duplex

In this case, the second node considers the soft resource as always available.

When indicated by 2 bits, e.g., 00 indicates D L is available, 01 indicates U L is available, 10 indicates available, and 11 indicates unavailable, then for the second node 00 is received and considered an error indication, 01 is received and considered an error indication, 10 is received and considered available, and 11 is received and considered an error indication.

Based on this, in an embodiment, the method may further include:

When indicated by 2 bits, for example, 00 indicates that D L is available, 01 indicates that U L is available, 10 indicates available, and 11 indicates unavailable, then for the second node, when 00 is received, D L is considered available, 01 is received, U L is considered available, 10 is received, and is considered available, since the availability of the soft resource indicated by the first node is the availability of the matching soft resource, in this case, the second node does not issue an indication of unavailable, i.e., 11.

Specifically, there may be the following three cases:

In this case explicit signaling may indicate three states available, unavailable and U L available, of course, only one of these states will be issued when actually applied.

In this case, explicit signaling may indicate three states, available, D L available, and U L available.

Third, its own capability to support full duplex

In this case, the second node considers the soft resource as always available.

In an embodiment, the receiving the availability of the soft resource indicated by the first node includes:

accordingly, the determining the availability of the soft resource matched with the self-supported capacity by using the indicated availability of the soft resource comprises the following steps:

That is, the content indicated by the explicit signaling is the transceiving state of the MT side link resource, i.e. the actual transmission direction of the MT side link resource. At this time, the second node implicitly determines the availability of the soft resource (i.e. the soft resource matched with the capability of the second node) according to the actual transmission direction of the MT side link resource.

For example, assuming that the capability of the node itself is half duplex support, and only simultaneous reception is supported, and simultaneous transmission is not supported, as shown in fig. 7, the second node determines that the U L resource in the soft resource is available when the MT link is in a reception state, determines that the soft resource is not available when the MT link is in a transmission state, and determines that the soft resource is available when the MT link is in a non-transmission and non-reception state.

As can be seen from the above description, the solution of the embodiment of the present invention can indicate the availability of soft resources for the capabilities of different IAB nodes through the sending or receiving status of the MT side. In this process, the specific resource configuration of the DU side of the IAB node does not need to be known, thereby reducing signaling overhead. In addition, the IAB node is not required to report the specific resource configuration of the own DU side to the parent node, and the signaling overhead is further reduced.

An embodiment of the present invention provides a resource determining method, as shown in fig. 8, the method includes:

step 801: the first node determines the availability of soft resources of the second node; and indicating the availability of the soft resource to the second node through signaling;

Step 802: and after receiving the availability of the soft resource indicated by the first node, the second node determines the availability of the soft resource matched with the self-supported capacity by utilizing the indicated availability of the soft resource.

Here, it should be noted that: the specific processing procedures of the first node and the second node are described in detail above, and are not described herein again.

The scheme provided by the embodiment of the invention indicates the availability of soft resources by a signaling display mode, and compared with an implicit indication mode, the implementation is simpler, and the specific analysis is as follows:

when implicitly indicating, the IAB node needs to determine the transmission direction of the flexile resource according to whether there is periodic or aperiodic channel state information reference signal (CSI-RS)/channel Sounding Reference Signal (SRS) transmission on the D L, U L and flexile resource in the MT side link, whether there is Physical Downlink Shared Channel (PDSCH)/Physical Uplink Shared Channel (PUSCH) transmission triggered (trigger) by Downlink Control Information (DCI), and the like, and further, according to the principles of half-duplex limitation, simultaneous reception only, simultaneous transmission not and the like, the IAB node implicitly determines which soft resources in the DU function are available and which soft resources are unavailable.

The method is only suitable for determining the transmission direction of the Flexible resource in the MT side link and then judging the availability of the DU resource; for the case that the DU function is scheduled first and the MT function is scheduled later, a resource conflict problem may be caused, for example, as shown in table 2, if the DU function of the IAB2 node schedules PUSCH transmission in slot 8 in slot 3, that is, an uplink scheduling signaling is issued, at this time, the DU function of the IAB2 node is in a receiving state in slot 8; the MT function of the IAB2 node also receives the scheduling signaling of the IAB1 node (parent node of the IAB 2) in the slot 5, and indicates that PUSCH transmission is performed in the slot 8, and at this time, the DU function of the IAB2 node is in a transmission state in the slot 8; due to the half-duplex limitation, the IAB2 node cannot achieve both transmission and reception in slot 8, so the IAB2 node must discard one uplink resource. And when the protocol is described, the transmission direction needs to be classified for resources such as SSB, CSI-RS and the like, which is more complex.

TABLE 2

In order to ensure the reliability of implicit indication, the value range of K0/K1/K2 of the IAB node can be reported to the node by the IAB node, and the parent node always adopts a value larger than the reported value, so that the scheduling of the MT function is always prior to the scheduling of the DU function for one IAB node, and the problem of resource conflict is avoided. Where K0 denotes a time interval from a Physical Downlink Control Channel (PDCCH) to a PDSCH; k1 denotes the PDSCH to HARQ-ACK feedback time interval; k2 denotes the PDCCH-to-PUSCH time interval.

As can be seen from the above description, the complexity of implementation increases significantly if implicit indication is employed.

According to the scheme provided by the embodiment of the invention, the first node determines the availability of soft resources of the second node; and indicating the availability of the soft resource to the second node through signaling; a backhaul link exists between the first node and a second node; the second node has a DU function; the second node determines the availability of the soft resources matched with the self-supported capacity by using the indicated availability of the soft resources, and because the parent node indicates the availability of the soft resources to the IAB node, the IAB determines the availability of the soft resources matched with the self-supported capacity by using the indicated availability according to the self-supported capacity, the parent node does not need to know the specific resource configuration of the IAB node DU and does not need to indicate each soft resource, thereby greatly saving the signaling overhead.

In order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a resource determining apparatus, where as shown in fig. 9, the apparatus is disposed on a first node, and includes:

a first determining unit 91, configured to determine availability of soft resources of the second node; a backhaul link exists between the first node and a second node; the second node has a DU function;

an indicating unit 92, configured to indicate availability of the soft resource to the second node through signaling; the indicated availability is used for the second node to determine the availability of soft resources matching its own capabilities.

In an embodiment, the first determining unit 91 is specifically configured to:

In an embodiment, the apparatus may further include:

the first determining unit 91 is specifically configured to determine, according to the capability information and in combination with the transceiving state corresponding to the resource allocated by the backhaul link, availability of the soft resource of the second node.

In an embodiment, the indicating unit 92 is specifically configured to:

In practical applications, the first determining unit 91 may be implemented by a processor in the resource determining device; the indicating unit 92 may be implemented by a processor in the resource determination device in combination with a communication interface; the first receiving unit may be implemented by a communication interface in the resource determination device.

In order to implement the method on the second node side in the embodiment of the present invention, an embodiment of the present invention further provides a resource determining apparatus, which is disposed on the second node, and as shown in fig. 10, the apparatus includes:

a second receiving unit 101, configured to receive the availability of soft resources indicated by the first node; a backhaul link exists between the first node and a second node; the second node has a DU function;

and a second determining unit 102, configured to determine, by using the indicated availability of the soft resource, the availability of the soft resource that matches the self-supported capability.

In an embodiment, the availability of the indicated soft resource is determined based on the transceiving state corresponding to the resource allocated by the backhaul link;

the second determining unit 102 is configured to determine, by using a data transmission mode supported by the second node itself, the availability of the soft resource that matches the indicated availability of the soft resource.

In an embodiment, the apparatus may further include: a reporting unit, configured to report capability information of the second node to the first node; the capability information characterizes data transmission modes supported by the second node;

the second determining unit 102 is specifically configured to determine that the indicated soft resource availability is the matched soft resource availability.

In an embodiment, the second receiving unit 101 is specifically configured to:

the second determining unit 102 is specifically configured to determine, by using a data transmission mode supported by the second node itself, availability of the matched soft resource in combination with a transceiving state corresponding to the resource allocated by the backhaul link.

In practical application, the first receiving unit 101 and the reporting unit may be implemented by a communication interface in the resource determining device; the second determining unit 102 may be implemented by a processor in the resource determining device.

It should be noted that: in the resource determination device provided in the above embodiment, only the division of each program module is taken as an example for performing resource determination, and in practical applications, the processing allocation may be completed by different program modules as needed, that is, the internal structure of the device may be divided into different program modules to complete all or part of the processing described above. In addition, the resource determining apparatus and the resource determining method provided in the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments for details, which are not described herein again.

Based on the hardware implementation of the program module, and in order to implement the method on the first node side in the embodiment of the present invention, an embodiment of the present invention further provides a first node, as shown in fig. 11, where the first node 110 includes:

a first communication interface 111, which can perform information interaction with a second node;

and the first processor 112 is connected with the first communication interface 111 to implement information interaction with the second node, and is configured to execute the method provided by one or more technical solutions of the first node side when running a computer program. And the computer program is stored on the first memory 113.

Specifically, the first processor 112 is configured to determine availability of soft resources of the second node; a backhaul link exists between the first node and a second node; the second node has a DU function; and signaling the availability of the soft resource to the second node using the first communication interface 111; the indicated availability is used for the second node to determine the availability of soft resources matching its own capabilities.

In an embodiment, the first processor 112 is specifically configured to:

In an embodiment, the first communication interface 111 is configured to receive capability information reported by the second node; the capability information characterizes data transmission modes supported by the second node;

the first processor 112 is specifically configured to: and determining the availability of soft resources of the second node according to the capability information and the corresponding transceiving state of the resources allocated by the backhaul link.

In an embodiment, the first processor 112 is specifically configured to:

It should be noted that: the specific processing procedures of the first processor 112 and the first communication interface 111 are detailed in the method embodiment, and are not described herein again.

Of course, in practice, the various components in the first node 110 are coupled together by the bus system 114. It will be appreciated that the bus system 114 is used to enable communications among the components. The bus system 124 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 114 in FIG. 11.

The first memory 113 in the embodiment of the present invention is used to store various types of data to support the operation of the first node 110. Examples of such data include: any computer program for operating on the first node 110.

The method disclosed in the above embodiments of the present invention may be applied to the first processor 112, or implemented by the first processor 112. The first processor 112 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the first processor 112. The first Processor 112 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The first processor 112 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the first memory 113, and the first processor 112 reads the information in the first memory 113 and performs the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the first node 110 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable logic devices (P L D, Programmable L) Complex Programmable logic devices (CP L D, Complex Programmable L) devices, Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

Based on the hardware implementation of the program module, and in order to implement the method on the second node side in the embodiment of the present invention, as shown in fig. 12, the second node 120 includes:

a second communication interface 121, which is capable of performing information interaction with the first node;

the second processor 122 is connected to the second communication interface 121 to implement information interaction with the first node, and is configured to execute a method provided by one or more technical solutions of the second node side when running a computer program. And said computer program is stored on said second memory 123.

Specifically, the second communication interface 121 is configured to receive the availability of soft resources indicated by the first node; a backhaul link exists between the first node and a second node; the second node has a DU function;

and a second processor 122, configured to determine, by using the indicated availability of the soft resource, the availability of the soft resource that matches the self-supported capability.

the second processor 122 is specifically configured to: and determining the availability of the matched soft resource by using a data transmission mode supported by the second node and combining the indicated availability of the soft resource.

In an embodiment, the second communication interface 121 is further configured to report capability information of the second node to the first node; the capability information characterizes data transmission modes supported by the second node;

the second processor 122 is specifically configured to: determining the indicated availability of the soft resource as the availability of the matched soft resource.

In an embodiment, the second communication interface 121 is specifically configured to:

the second processor 122 is specifically configured to determine, by using a data transmission mode supported by the second node itself, availability of the matched soft resource in combination with a transceiving state corresponding to the resource allocated by the backhaul link.

It should be noted that: the specific processing procedures of the second processor 122 and the second communication interface 121 are detailed in the method embodiment, and are not described herein again.

Of course, in practice, the various components in the second node 120 are coupled together by a bus system 124. It will be appreciated that the bus system 124 is used to enable communications among the components. The bus system 124 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 124 in fig. 12.

The second memory 123 in the embodiment of the present invention is used to store various types of data to support the operation of the second node 120. Examples of such data include: any computer program for operating on the second node 120.

The method disclosed in the above embodiments of the present invention may be applied to the second processor 122, or implemented by the second processor 122. The second processor 122 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the second processor 122. The second processor 122 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The second processor 122 may implement or perform the methods, steps and logic blocks disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the second memory 123, and the second processor 122 reads the information in the second memory 123, and in combination with its hardware, performs the steps of the foregoing method.

In an exemplary embodiment, the second node 120 may be implemented by one or more ASICs, DSPs, P L D, CP L D, FPGA, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components for performing the aforementioned methods.

The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic Random Access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical Disc, or a Compact Disc Read-Only Memory (CD-ROM, Flash Memory), a Dynamic Random Access Memory (DRAM), which may be of any type suitable for Dynamic Access, including but not limited to Dynamic Random Access memories (SDRAM), Random Access memories (SDRAM), Random Access memories (SDRAM, Random Access memories (SDRAM, Random Access memories) and Random Access memories (SDRAM, Random Access memories) which may be used as examples, Random Access memories (SDRAM, Random Access memories) and Random Access memories (SDRAM, Random Access memories) and Random Access memories, Random Access memories (SDRAM, Random Access memories) which may be of any type suitable for example, Random Access memories (SDRAM, Random Access memories, Random.

In order to implement the method according to the embodiment of the present invention, an embodiment of the present invention further provides a resource determining system, as shown in fig. 13, where the system includes: a first node 131 and a second node 132,

the first node 131, configured to determine availability of soft resources of the second node 132; and signaling the availability of the soft resource to the second node 132;

the second node 132 is configured to, after receiving the availability of the soft resource indicated by the first node, determine, by using the indicated availability of the soft resource, the availability of the soft resource that matches with the self-supported capability.

Wherein a backhaul link exists between the first node and a second node; the second node has a DU functionality.

Here, it should be noted that: the specific processing procedures of the first node 131 and the second node 132 are described in detail above, and are not described herein again.

In an exemplary embodiment, the present invention further provides a storage medium, specifically a computer-readable storage medium, for example, a first memory 113 storing a computer program, where the computer program is executable by the first processor 112 of the first node 110 to perform the steps of the first node-side method. For example, the second memory 123 may store a computer program, which may be executed by the second processor 122 of the second node 120 to perform the steps of the second node-side method. The computer readable storage medium may be Memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disk, or CD-ROM.

It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In addition, the technical solutions described in the embodiments of the present invention may be arbitrarily combined without conflict.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A resource determination method applied to a first node includes:

determining the availability of the soft resource of the second node; a backhaul link exists between the first node and a second node; the second node has a DU function;

2. The method of claim 1, wherein the determining the availability of soft resources for the second node comprises:

3. The method according to claim 2, wherein the determining the availability of soft resources of the second node according to the transceiving status corresponding to the resources allocated by the backhaul link comprises:

4. The method of claim 2, wherein the indicated availability comprises upstream available, downstream available, or unavailable.

5. The method of claim 1, further comprising:

6. The method of claim 5, wherein the indicated availability comprises upstream available, downstream available, or unavailable.

7. The method of claim 1, wherein the signaling the availability of the soft resource to the second node comprises:

8. The method according to any of claims 1 to 7, wherein the signaling the availability of the determined soft resource to the second node comprises:

9. The method according to any of claims 1 to 7, wherein the capabilities supported by the second node are half-duplex and support simultaneous reception only and do not support simultaneous transmission;

alternatively, the first and second electrodes may be,

the capability supported by the second node is full duplex.

10. A resource determination method applied to a second node includes:

11. The method according to claim 10, wherein the indicated availability of soft resources is determined based on the transceiving status corresponding to the resources allocated by the backhaul link;

12. The method of claim 11, wherein the indicated availability of soft resources comprises upstream available, downstream available, or unavailable.

13. The method of claim 10, further comprising:

14. The method of claim 13, wherein the indicated availability of soft resources comprises upstream available, downstream available, or unavailable.

15. The method of claim 10, wherein the receiving the availability of soft resources indicated by the first node comprises:

16. The method according to any of claims 10 to 15, wherein the receiving the availability of soft resources indicated by the first node comprises:

17. The method according to any one of claims 10 to 15,

the supported capacity is half duplex, only supports simultaneous reception, and does not support simultaneous transmission;

alternatively, the first and second electrodes may be,

the supported capability is full duplex.

18. A resource determination apparatus, disposed on a first node, comprising:

19. The apparatus according to claim 18, wherein the first determining unit is specifically configured to:

20. The apparatus of claim 18, further comprising:

21. The apparatus according to claim 18, wherein the indication unit is specifically configured to:

22. A resource determination apparatus, disposed on a second node, comprising:

23. The apparatus according to claim 22, wherein the indicated availability of soft resources is determined based on the transceiving status corresponding to the resources allocated by the backhaul link;

24. The apparatus of claim 22, further comprising: a reporting unit, configured to report capability information of the second node to the first node; the capability information characterizes data transmission modes supported by the second node;

25. The apparatus of claim 22, wherein the second receiving unit is specifically configured to:

26. A first node, comprising: a first processor and a first communication interface; wherein the content of the first and second substances,

27. The node of claim 26, wherein the first processor is specifically configured to:

28. The node according to claim 26, wherein the first communication interface is configured to receive capability information reported by the second node; the capability information characterizes data transmission modes supported by the second node;

29. The node of claim 26, wherein the first processor is specifically configured to:

30. A second node, comprising:

31. The node according to claim 30, wherein the indicated availability of soft resources is determined based on the transceiving status corresponding to the resources allocated by the backhaul link;

32. The node of claim 30, wherein the second communication interface is further configured to report capability information of the second node itself to the first node; the capability information characterizes data transmission modes supported by the second node;

33. The node according to claim 30, wherein the second communication interface is specifically configured to:

34. A first node, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,

wherein the first processor is adapted to perform the steps of the method of any one of claims 1 to 9 when running the computer program.

35. A second node, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,

wherein the second processor is adapted to perform the steps of the method of any of claims 10 to 17 when running the computer program.

36. A computer storage medium having a computer program stored thereon, wherein the computer program when executed by a processor implements the steps of the method of any of claims 1 to 9 or implements the steps of the method of any of claims 10 to 17.