CN112888066B - PDCCH sending method, PDCCH receiving device and node equipment - Google Patents
PDCCH sending method, PDCCH receiving device and node equipment Download PDFInfo
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- CN112888066B CN112888066B CN201911197789.3A CN201911197789A CN112888066B CN 112888066 B CN112888066 B CN 112888066B CN 201911197789 A CN201911197789 A CN 201911197789A CN 112888066 B CN112888066 B CN 112888066B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The invention provides a method and a device for sending and receiving a Physical Downlink Control Channel (PDCCH) and node equipment. The transmitting method comprises the following steps: when the synchronous signal SS or physical broadcast channel Block PBCH Block measurement time configuration SMTC window of the MT side conflicts with the first PDCCH monitoring time of the DU side, the transmission of the PDCCH of the DU side is abandoned; at a second PDCCH monitoring time, sending downlink control information DCI to the terminal; the DCI is used for indicating the terminal not to monitor the PDCCH. By adopting the method, when the SMTC window of the MT side collides with the PDCCH monitoring time of the DU side, the transmission of the PDCCH of the DU side is abandoned, and the terminal is instructed not to monitor the PDCCH at the second PDCCH monitoring time through DCI, so that the unnecessary PDCCH blind detection by the terminal is avoided, and the energy waste is caused.
Description
Technical Field
The present invention relates to the field of wireless technologies, and in particular, to a method and a device for sending and receiving a physical downlink control channel PDCCH, and a node device.
Background
In a 5G hot spot high-capacity scene, such as a market, a square, an airport and the like, the downlink data transmission rate can reach 300Mbps, the uplink data transmission rate can reach 50Mbps, the downlink capacity can reach 750Gbps/km2, and the uplink capacity can reach 125Gbps/km2; to support such high transmission rates and capacities, large bandwidths and dense deployments are required, which can be met by high frequency millimeter waves. Because the coverage of the high-frequency millimeter wave is limited, dense deployment is needed, and in order to reduce the dependence and the cost on the optical fiber, an access backhaul integrated (Integrated Access and Backhaul, IAB) technology is needed, and a backhaul function is added on the basis of meeting the access function of the base station.
A wireless communication system employing IAB technology includes:
host base station/node (IAB node): that is, an anchor point with an optical fiber connected core network, for example, as shown in fig. 1, a host base station/node (IAB node) may be a fifth generation evolved node b (DgNB);
IAB node (IAB node): no optical fiber connection and core network, but may be passed back over a wireless link and may provide access functions such as IAB1 and IAB2 in fig. 1. The IAB node includes a mobile terminal (Mobile Termination, MT) side and a Distributed Unit (DU) side, the MT side implements a backhaul function (may also be referred to as an MT function) of the IAB node, and the DU side implements an access function (may also be referred to as a DU function) of the IAB node.
In addition, each IAB node needs to perform discovery and measurement between nodes, and is currently defined based on a synchronization signal block (Synchronization Signal Block, abbreviated as SSB), where a window for measurement on the MT side is called an SSB measurement time configuration (SSB Measurement Time Configuration, SMTC) window, and a window for transmitting SSB on the DU side is called an SSB time configuration (SSB Time Configuration, STC) window. Each SMTC and STC window requires parameters defining a period, an offset, a duration, etc. The DU side of each IAB node needs to configure its access terminal UE with a physical downlink control channel (Physical Downlink Control Channel, PDCCH) monitoring occasion, including period, offset, duration, etc.
In the IAB scenario, if the MT side of one IAB node is configured with an SMTC window, in consideration of half duplex limitation, if the MT side performs SSB reception, the DU side cannot perform transmission and reception; if the MT side does not receive SSB, the DU side can transmit and receive, and the specific requirement depends on the resource type of the DU side.
Based on the above, when an IAB node configures an SMTC window, if there is a PDCCH monitoring occasion configuration on the DU side, whether the terminal needs to perform PDCCH blind detection needs to be further studied, so as to avoid the problem of terminal energy waste caused by performing unnecessary PDCCH blind detection.
Disclosure of Invention
The technical scheme of the invention aims to provide a method, a device and node equipment for sending and receiving Physical Downlink Control Channel (PDCCH), which are used for solving the problem of energy waste caused by unnecessary PDCCH blind detection by a terminal when an SMTC window on an MT side of an IAB node conflicts with PDCCH monitoring time on a DU side.
The invention provides a method for transmitting a Physical Downlink Control Channel (PDCCH), which is applied to an access backhaul integrated IAB node, wherein the method comprises the following steps:
when the synchronous signal SS or physical broadcast channel Block PBCH Block measurement time configuration SMTC window of the MT side conflicts with the first PDCCH monitoring time of the DU side, the transmission of the PDCCH of the DU side is abandoned;
At a second PDCCH monitoring time, sending downlink control information DCI to the terminal; the DCI is used for indicating the terminal not to monitor the PDCCH.
Optionally, the sending method, wherein the first PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource;
the time domain resources of the terminal are configured as flexible resources.
Optionally, in the transmitting method, the second PDCCH monitoring occasion is a PDCCH monitoring occasion closest to the first PDCCH monitoring occasion.
Optionally, the sending method, wherein the second PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side; the time domain resource of the terminal is configured as a flexible resource, the IAB node sends PDCCH on the DU side, and the time slot format sent to the terminal indicates SFI as a downlink resource.
Optionally, in the sending method, the downlink control information DCI indicates, through a preset indication field, that the terminal does not perform PDCCH monitoring.
Optionally, in the sending method, the preset indication field includes N bits, and is used to indicate that the terminal does not perform PDCCH monitoring in N consecutive PDCCH monitoring occasions; wherein N is an integer greater than or equal to 1.
Optionally, the sending method, wherein the method further includes:
and at the PDCCH monitoring time when the DCI indicates not to monitor, if the time domain resource of the terminal is configured as a flexible resource, transmitting an SFI (SFI) indicating uplink resource or flexible resource to the terminal.
The invention also provides a receiving method of the physical downlink control channel PDCCH, which is applied to the terminal, wherein the method comprises the following steps:
when a measurement time configuration SMTC window of a synchronization signal SS or a physical broadcast channel Block PBCH Block of an MT side of an access backhaul integrated IAB node collides with a first PDCCH monitoring occasion of a DU side, receiving downlink control information DCI sent by the IAB node at a second PDCCH monitoring occasion;
the DCI is used for indicating the terminal not to monitor the PDCCH.
Optionally, the sending method, wherein the first PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource;
the time domain resources of the terminal are configured as flexible resources.
Optionally, in the transmitting method, the second PDCCH monitoring occasion is a PDCCH monitoring occasion closest to the first PDCCH monitoring occasion.
Optionally, the sending method, wherein the second PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side;
the time domain resource of the terminal is configured as a flexible resource, the IAB node sends PDCCH on the DU side, and the time slot format sent to the terminal indicates SFI as a downlink resource.
Optionally, in the sending method, the downlink control information DCI indicates, through a preset indication field, that the terminal does not perform PDCCH monitoring.
Optionally, in the sending method, the preset indication field includes N bits, and is used to indicate that the terminal does not perform PDCCH monitoring in N consecutive PDCCH monitoring occasions; wherein N is an integer greater than or equal to 1.
Optionally, the sending method, wherein the method further includes:
monitoring PDCCH is still carried out when the time domain resource of the terminal is configured as the downlink resource at N PDCCH monitoring occasions indicated by the preset indication field;
when the time domain resource of the terminal is configured as the uplink resource, the monitoring of the PDCCH is not executed at N PDCCH monitoring occasions indicated by the preset indication field;
when the time domain resource of the terminal is configured as flexible resource and the time slot format indication SFI indicated as uplink resource or flexible resource is received, the monitoring of the PDCCH is not executed at N PDCCH monitoring occasions indicated by the preset indication field;
And in N PDCCH monitoring occasions indicated by the preset indication field, when the time domain resource of the terminal is configured as flexible resource and SFI indicated as uplink resource is received or SFI is not received, monitoring of PDCCH is still executed.
The invention also provides an access backhaul integrated IAB node device, which comprises a transceiver, wherein the transceiver is used for:
when the synchronous signal SS or physical broadcast channel Block PBCH Block measurement time configuration SMTC window of the MT side conflicts with the first PDCCH monitoring time of the DU side, the transmission of the PDCCH of the DU side is abandoned;
at a second PDCCH monitoring time, sending downlink control information DCI to the terminal; the DCI is used for indicating the terminal not to monitor the PDCCH.
The invention also provides a terminal, which comprises a transceiver, wherein the transceiver is used for:
when a measurement time configuration SMTC window of a synchronization signal SS or a physical broadcast channel Block PBCH Block of an MT side of an access backhaul integrated IAB node collides with a first PDCCH monitoring occasion of a DU side, receiving downlink control information DCI sent by the IAB node at a second PDCCH monitoring occasion;
the DCI is used for indicating the terminal not to monitor the PDCCH.
The invention also provides a device for sending the physical downlink control channel PDCCH, which is applied to the access backhaul integrated IAB node, wherein the device comprises:
the processing module is used for giving up the transmission of the PDCCH at the DU side when the SMTC window is configured to conflict with the first PDCCH monitoring time at the DU side by the synchronous signal SS or the physical broadcast channel Block PBCH Block measurement time at the MT side;
a sending module, configured to send downlink control information DCI to a terminal at a second PDCCH monitoring occasion; the DCI is used for indicating the terminal not to monitor the PDCCH.
The invention also provides a receiving device of the physical downlink control channel PDCCH, which is applied to the terminal, wherein the device comprises:
a receiving module, configured to receive downlink control information DCI sent by an IAB node at a second PDCCH monitoring occasion when a SMTC window configured by a synchronization signal SS or a measurement time of a physical broadcast channel Block PBCH Block on an MT side of the access backhaul integrated IAB node collides with the first PDCCH monitoring occasion on a DU side;
the DCI is used for indicating the terminal not to monitor the PDCCH.
In one aspect, the present invention further provides a network device, including: a processor, a memory, and a program stored on the memory and executable on the processor, which when executed by the processor, implements the method for transmitting PDCCH as described in any one of the above, or implements the method for receiving PDCCH as described in any one of the above.
An aspect of the present invention also provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program that, when executed by a processor, implements steps in a method for transmitting a PDCCH as described in any one of the above, or implements steps in a method for receiving a PDCCH as described in any one of the above.
At least one of the above technical solutions of the invention has the following beneficial effects:
by adopting the PDCCH sending method provided by the embodiment of the invention, when the SMTC window of the SS or the PBCH Block at the MT side conflicts with the PDCCH monitoring time at the DU side, the sending of the PDCCH at the DU side is abandoned, and the terminal is instructed not to carry out PDCCH monitoring at the second PDCCH monitoring time through downlink control information (Downlink Control Information, DCI), so that the energy waste caused by unnecessary PDCCH blind detection carried out by the terminal is avoided.
Drawings
Fig. 1 is a schematic diagram of a wireless communication system employing a method according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for transmitting PDCCH according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a slot structure when SMTC window on the MT side collides with STC window on the DU side;
fig. 4 is a flowchart of a method for receiving and sending PDCCH according to an embodiment of the present invention;
Fig. 5 is a schematic structural diagram of an IAB node device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a PDCCH transmitting apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a PDCCH receiving apparatus according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a network device according to another embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The sending method and the receiving method of the physical downlink control channel PDCCH are applied to a wireless communication system adopting an IAB technology. Fig. 1 is a schematic diagram of a wireless communication system employing a method according to an embodiment of the present invention. Wherein the wireless communication system comprises:
host base station/node (IAB node): i.e. an anchor point with a fiber connection core network, such as shown in fig. 1, in the embodiment of the present invention, the host base station/node (IAB node) is DgNB.
IAB node (IAB node): no optical fiber connection and core network, but may be passed back over a wireless link and may provide access functions such as IAB1 and IAB2 in fig. 1.
Wherein, the previous-hop node of a certain IAB node is a parent node, for example, dgNB in fig. 1 is a parent node of IAB 1; the next-hop node of a certain IAB node is a child node, for example, IAB2 in fig. 1 is a child node of IAB 1; the link between the terminal UE and the IAB node or IAB donor is an access link, which includes an uplink access link and a downlink access link, such as links 1a, 2a, and 3 in fig. 1; the links between the IAB node and the IAB child node or the IAB parent node are backhaul links, which include an uplink backhaul link and a downlink backhaul link, such as links 1b and 2b in fig. 1.
One of the ways in which data can be transmitted using the system of fig. 1 is time division multiplexing (Time Division Multiplexing, TDM): wherein, the MT side and the DU side of one IAB node do not receive and transmit at the same time, one MT side transmits data, and the other DU side transmits data at the same time; such as 1b and 2b, 1b and 2a, 1b and (2 a and 2 b) in fig. 1.
In addition, in the IAB scenario, the resource configuration of the IAB node includes the following cases:
On the MT side, the time domain resources of the parent link comprise downlink DL resources, uplink UL resources and Flexible resources;
on the DU side, the time domain resources of the sub-link include downlink DL resources, uplink UL resources, flexible resources and unavailable Not Available resources. The DL resources, UL resources and Flexible resources are divided into hard resources and soft resources;
wherein Hard resources represent resources that are always available to the sub-link;
the Soft resource indicates whether the child link is available to be explicitly or implicitly controlled by the parent node.
In the IAB scenario, each IAB node needs to perform discovery and measurement between nodes, where a standard defines discovery and measurement between nodes based on a synchronization signal (Synchronization Signal, SS) or a physical broadcast channel Block (Physical Broadcast Channel Block, PBCH Block), a window used for SSB measurement on the MT side is referred to as SMTC window, and a window used for transmitting SS or PBCH Block on the DU side is referred to as STC window; each SMTC and STC window requires parameters defining a period, offset, duration, etc. The DU side of each IAB node needs to perform configuration of PDCCH monitoring occasions for its access UE, where the configuration includes period, offset, duration, etc.
In general, the following conditions are satisfied between the allocation of slot resources and the PDCCH monitoring monitor by the slot format indication (slot format indicator, SFI):
1) SFI cannot conflict with semi-static configured directions;
2) If the semi-static configuration resource is Flexible resource or the semi-static configuration is absent, the UE detects the SFI, and for PDCCH receiving of the high-level configuration, PDCCH monitoring is performed only when the SFI indicates that the resource is DL resource; if the SFI indicated resource is an UL resource or a Flexible resource, the UE does not monitor the PDCCH;
3) If the UE does not receive the SFI and no DCI indicates uplink transmission, the UE monitors the PDCCH.
In the IAB scenario, if the MT side of one IAB node is configured with an SMTC window, if the MT side performs SSB reception, the DU side cannot perform transmission and reception; if the MT side does not receive the SSB, the DU side can transmit and receive, and the specific requirement depends on the resource type of the DU side, so when an IAB node configures an SMTC window, if the DU side has PDCCH monitoring time configuration, the embodiment of the invention provides a PDCCH transmitting method for avoiding the UE from carrying out unnecessary PDCCH blind detection.
Specifically, as shown in fig. 2, one embodiment of a method for sending a PDCCH according to an embodiment of the present invention includes:
S210, when the synchronous signal SS or physical broadcast channel Block PBCH Block measurement time configuration SMTC window of the MT side conflicts with the first PDCCH monitoring time of the DU side, discarding the transmission of the PDCCH of the DU side;
s220, at a second PDCCH monitoring time, transmitting downlink control information DCI to the terminal; the DCI is used for indicating the terminal not to monitor the PDCCH.
By adopting the PDCCH sending method provided by the embodiment of the invention, when the SMTC window of the SS or the PBCH Block at the MT side conflicts with the PDCCH monitoring time at the DU side, the sending of the PDCCH at the DU side is abandoned, and the terminal is instructed not to carry out PDCCH monitoring at the second PDCCH monitoring time through downlink control information (Downlink Control Information, DCI), so that the energy waste caused by unnecessary PDCCH blind detection carried out by the terminal is avoided.
Compared with the prior art, the PDCCH transmission method introduces a DCI format for indicating the terminal not to monitor the PDCCH. Alternatively, the terminal may be instructed not to monitor PDCCH through a preset indication field in DCI.
Further, optionally, the preset indication field in the DCI for indicating that the terminal does not perform PDCCH monitoring includes N bits, where N is an integer greater than or equal to 1, for indicating that the terminal does not perform PDCCH monitoring at N consecutive PDCCH monitoring occasions.
With the DCI having the above structure, the indication that the PDCCH is not monitored at the subsequent N PDCCH monitoring timings can be made with N bits, and the DCI is in the form of a multi-slot joint indication.
In the embodiment of the present invention, optionally, in step S220, the second PDCCH monitoring opportunity for transmitting DCI is the PDCCH monitoring opportunity closest to the first PDCCH monitoring opportunity, so as to ensure that DCI indicating that the terminal does not perform PDCCH monitoring can be effectively transmitted to the terminal in time.
Optionally, the second PDCCH monitoring occasion satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side; the time domain resource of the terminal is configured as a flexible resource, the IAB node sends PDCCH on the DU side, and the time slot format sent to the terminal indicates SFI as a downlink resource.
And the second PDCCH monitoring time meeting any condition ensures that DCI for indicating the terminal not to carry out PDCCH monitoring can be timely and effectively received by the terminal.
Further, the first PDCCH monitoring occasion satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource;
the time domain resources of the terminal are configured as flexible resources.
In one embodiment, according to a general processing rule, if the time domain resource of the terminal is configured as the downlink DL resource at the first PDCCH monitoring occasion, no matter whether the DU side transmits the PDCCH, the UE needs to detect the PDCCH, thereby causing energy waste; by adopting the method of the embodiment of the invention, when the SMTC window of the MT side collides with the first PDCCH monitoring time of the DU side and the time domain resource of the terminal is configured as the DL resource, the DU side does not transmit the PDCCH, and at the second PDCCH monitoring time, DCI indicating not to carry out PDCCH monitoring is transmitted to the terminal so as to indicate the terminal not to carry out PDCCH detection, thereby avoiding energy waste caused by blind detection of the PDCCH;
In another embodiment, according to the normal processing rule, if the time domain resource of the terminal is configured as a Flexible resource at the first PDCCH monitoring occasion, the UL resource or the Flexible resource can be indicated through the SFI, but if the terminal does not normally receive the SFI, the UE still needs to detect the PDCCH, so that waste can be caused; by adopting the method provided by the embodiment of the invention, when the SMTC window on the MT side collides with the first PDCCH monitoring time on the DU side, and the time domain resource of the terminal is configured as Flexible resource, the DU side does not transmit PDCCH, and at the second PDCCH monitoring time, DCI indicating not to carry out PDCCH monitoring is transmitted to the terminal so as to indicate the terminal not to carry out PDCCH detection, thereby avoiding energy waste caused by blind detection of PDCCH.
In the embodiment of the present invention, after step S220, the method further includes:
and at the PDCCH monitoring time when the DCI indicates not to monitor, if the time domain resource of the terminal is configured as a flexible resource, transmitting an SFI (SFI) indicating uplink resource or flexible resource to the terminal.
Fig. 3 is a schematic diagram of a slot structure when the SMTC window on the MT side collides with the STC window on the DU side (i.e., the first PDCCH monitoring occasion). According to fig. 3, when the SMTC window on the MT side collides with the first PDCCH monitoring occasion, no PDCCH is transmitted on the DU side regardless of whether the configuration resource on the DU side is an unavailable Not Available resource, a soft resource, or a hard resource.
Under the condition that the DU side does not send the PDCCH, if the time domain of the UE is configured as the DL resource, the terminal still needs to detect the PDCCH; if the time domain resource of the UE is configured as the UL resource, the terminal does not need to detect the PDCCH; if the time domain resource of the UE is configured as a flexible resource, if the SFI is indicated as an Uplink (UL) resource or a flexible resource, the PDCCH does not need to be detected; if the SFI indicates downlink resources or the SFI is not received, the terminal still needs to detect the PDCCH. Therefore, when the DU side does not transmit the PDCCH and the time domain resource of the terminal is configured as the flexible resource, the terminal can be prevented from further detecting the PDCCH by transmitting the SFI indicated as the uplink resource or the flexible resource to the terminal, so that the energy saving purpose is achieved.
The embodiment of the invention also provides a receiving method of the PDCCH, which is applied to the terminal, as shown in fig. 4, and comprises the following steps:
s410, when a measurement time configuration SMTC window of a synchronization signal SS or a physical broadcast channel Block PBCH Block of an MT side of an access backhaul integrated IAB node collides with a first PDCCH monitoring occasion of a DU side, receiving downlink control information DCI sent by the IAB node at a second PDCCH monitoring occasion;
the DCI is used for indicating the terminal not to monitor the PDCCH.
By adopting the PDCCH receiving method provided by the embodiment of the invention, when the SMTC window of the SS or the PBCH Block at the MT side collides with the PDCCH monitoring time at the DU side, the IAB node gives up the transmission of the PDCCH at the DU side, and the terminal is instructed not to monitor the PDCCH at the second PDCCH monitoring time through the downlink control information (Downlink Control Information, DCI), so that the energy waste caused by unnecessary PDCCH blind detection by the terminal is avoided.
In the method for receiving PDCCH according to the embodiment of the present invention, optionally, the first PDCCH monitoring timing satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource;
the time domain resources of the terminal are configured as flexible resources.
In one embodiment, according to a general processing rule, if the time domain resource of the terminal is configured as a downlink DL resource at the first PDCCH monitoring occasion, no matter if the PDCCH is transmitted from the DU side, the UE needs to detect the PDCCH, thereby causing energy waste; by adopting the method of the embodiment of the invention, when the SMTC window of the MT side collides with the first PDCCH monitoring time of the DU side and the time domain resource of the terminal is configured as the DL resource, the DU side does not transmit the PDCCH, and at the second PDCCH monitoring time, DCI indicating not to carry out PDCCH monitoring is transmitted to the terminal so as to indicate the terminal not to carry out PDCCH detection, thereby avoiding energy waste caused by blind detection of the PDCCH;
In another embodiment, according to the normal processing rule, if the time domain resource of the terminal is configured as a Flexible resource at the first PDCCH monitoring occasion, the UL resource or the Flexible resource may be indicated by the SFI, but if the terminal does not normally receive the SFI, the UE still needs to detect the PDCCH, so that waste is caused; by adopting the method provided by the embodiment of the invention, when the SMTC window on the MT side collides with the first PDCCH monitoring time on the DU side and the time domain resource of the terminal is configured as the Flexible resource, the DU side does not transmit the PDCCH, and at the second PDCCH monitoring time, DCI indicating not to carry out PDCCH monitoring is transmitted to the terminal so as to indicate the terminal not to carry out PDCCH detection, thereby avoiding energy waste caused by blind detection of the PDCCH.
In the method for receiving PDCCH according to the embodiment of the present invention, optionally, the second PDCCH monitoring occasion is a PDCCH monitoring occasion closest to the first PDCCH monitoring occasion.
In the method for receiving PDCCH according to the embodiment of the present invention, optionally, the second PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side;
the time domain resource of the terminal is configured as a flexible resource, the IAB node sends PDCCH on the DU side, and the time slot format sent to the terminal indicates SFI as a downlink resource.
And the second PDCCH monitoring time meeting any condition ensures that DCI for indicating the terminal not to carry out PDCCH monitoring can be timely and effectively received by the terminal.
In the method for receiving PDCCH according to the embodiment of the present invention, optionally, the downlink control information DCI indicates, through a preset indication field, that the terminal does not monitor the PDCCH.
In the method for receiving PDCCH according to the embodiment of the present invention, optionally, the preset indication field includes N bits, which is used to indicate that the terminal does not perform PDCCH monitoring at N continuous PDCCH monitoring occasions; wherein N is an integer greater than or equal to 1.
With the DCI having the above structure, the indication that the PDCCH is not monitored at the subsequent N PDCCH monitoring timings can be made with N bits, and the DCI is in the form of a multi-slot joint indication.
In the method for receiving PDCCH according to the embodiment of the present invention, optionally, the method further includes:
monitoring PDCCH is still carried out when the time domain resource of the terminal is configured as the downlink resource at N PDCCH monitoring occasions indicated by the preset indication field;
when the time domain resource of the terminal is configured as the uplink resource, the monitoring of the PDCCH is not executed at N PDCCH monitoring occasions indicated by the preset indication field;
When the time domain resource of the terminal is configured as flexible resource and the time slot format indication SFI indicated as uplink resource or flexible resource is received, the monitoring of the PDCCH is not executed at N PDCCH monitoring occasions indicated by the preset indication field;
and in N PDCCH monitoring occasions indicated by the preset indication field, when the time domain resource of the terminal is configured as flexible resource and SFI indicated as uplink resource is received or SFI is not received, monitoring of PDCCH is still executed.
The embodiment of the invention also provides an access backhaul integrated IAB node device, as shown in fig. 5, including a transceiver 510, where the transceiver 510 is configured to:
when the synchronous signal SS or physical broadcast channel Block PBCH Block measurement time configuration SMTC window of the MT side conflicts with the first PDCCH monitoring time of the DU side, the transmission of the PDCCH of the DU side is abandoned;
at a second PDCCH monitoring time, sending downlink control information DCI to the terminal; the DCI is used for indicating the terminal not to monitor the PDCCH.
Optionally, the IAB node device, wherein the first PDCCH monitoring occasion satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource;
the time domain resources of the terminal are configured as flexible resources.
Optionally, the IAB node device further includes a second PDCCH monitoring occasion, where the second PDCCH monitoring occasion is a PDCCH monitoring occasion closest to the first PDCCH monitoring occasion.
Optionally, the IAB node device, wherein the second PDCCH monitoring occasion satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side; the time domain resource of the terminal is configured as a flexible resource, the IAB node sends PDCCH on the DU side, and the time slot format sent to the terminal indicates SFI as a downlink resource. Optionally, the IAB node device further includes a downlink control information DCI indicating that the terminal does not perform PDCCH monitoring through a preset indication field.
Optionally, the IAB node device may further include an indication unit, configured to indicate, when the preset indication field includes N bits, that the terminal continuously indicates N PDCCH monitoring occasions to not perform PDCCH monitoring; wherein N is an integer greater than or equal to 1.
Optionally, the IAB node device, wherein the transceiver 510 is further configured to:
and at the PDCCH monitoring time when the DCI indicates not to monitor, if the time domain resource of the terminal is configured as a flexible resource, transmitting an SFI (SFI) indicating uplink resource or flexible resource to the terminal.
One embodiment of the present invention further provides a terminal, as shown in fig. 6, which includes a transceiver 610 for:
when a measurement time configuration SMTC window of a synchronization signal SS or a physical broadcast channel Block PBCH Block of an MT side of an access backhaul integrated IAB node collides with a first PDCCH monitoring occasion of a DU side, receiving downlink control information DCI sent by the IAB node at a second PDCCH monitoring occasion;
the DCI is used for indicating the terminal not to monitor the PDCCH.
Optionally, the terminal, wherein the first PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource;
the time domain resources of the terminal are configured as flexible resources.
Optionally, the terminal, wherein the second PDCCH monitoring occasion is a PDCCH monitoring occasion closest to the first PDCCH monitoring occasion.
Optionally, the terminal, wherein the second PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side;
the time domain resource of the terminal is configured as a flexible resource, the IAB node sends PDCCH on the DU side, and the time slot format sent to the terminal indicates SFI as a downlink resource.
Optionally, the terminal indicates, by the preset indication field, that the terminal does not perform PDCCH monitoring.
Optionally, the terminal includes the preset indication field including N bits, where the preset indication field is configured to indicate that the terminal does not perform PDCCH monitoring on N consecutive PDCCH monitoring occasions; wherein N is an integer greater than or equal to 1.
Optionally, the terminal further includes a processor 620, configured to:
monitoring PDCCH is still carried out when the time domain resource of the terminal is configured as the downlink resource at N PDCCH monitoring occasions indicated by the preset indication field;
when the time domain resource of the terminal is configured as the uplink resource, the monitoring of the PDCCH is not executed at N PDCCH monitoring occasions indicated by the preset indication field;
when the time domain resource of the terminal is configured as flexible resource and the time slot format indication SFI indicated as uplink resource or flexible resource is received, the monitoring of the PDCCH is not executed at N PDCCH monitoring occasions indicated by the preset indication field;
and in N PDCCH monitoring occasions indicated by the preset indication field, when the time domain resource of the terminal is configured as flexible resource and SFI indicated as uplink resource is received or SFI is not received, monitoring of PDCCH is still executed.
An embodiment of the present invention further provides a device for sending a physical downlink control channel PDCCH, which is applied to an access backhaul integrated IAB node, as shown in fig. 7, and the device includes:
a processing module 710, configured to discard sending of the PDCCH on the DU side when the SMTC window is configured to collide with the first PDCCH monitoring occasion on the DU side by the synchronization signal SS or the physical broadcast channel Block PBCH Block on the MT side;
a sending module 720, configured to send downlink control information DCI to the terminal at a second PDCCH monitoring occasion; the DCI is used for indicating the terminal not to monitor the PDCCH.
Optionally, the transmitting device, wherein the first PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource;
the time domain resources of the terminal are configured as flexible resources.
Optionally, the sending device further includes a second PDCCH monitoring timing, where the second PDCCH monitoring timing is a PDCCH monitoring timing closest to the first PDCCH monitoring timing.
Optionally, the transmitting device, wherein the second PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side; the time domain resource of the terminal is configured as a flexible resource, the IAB node sends PDCCH on the DU side, and the time slot format sent to the terminal indicates SFI as a downlink resource. Optionally, in the sending device, the downlink control information DCI indicates, through a preset indication field, that the terminal does not perform PDCCH monitoring.
Optionally, the sending device, where the preset indication field includes N bits, configured to indicate that the terminal does not perform PDCCH monitoring on N consecutive PDCCH monitoring occasions; wherein N is an integer greater than or equal to 1.
Optionally, in the sending device, the sending module 720 is further configured to:
and at the PDCCH monitoring time when the DCI indicates not to monitor, if the time domain resource of the terminal is configured as a flexible resource, transmitting an SFI (SFI) indicating uplink resource or flexible resource to the terminal.
An embodiment of the present invention further provides a device for receiving a physical downlink control channel PDCCH, which is applied to a terminal, as shown in fig. 8, and the device includes:
a receiving module 810, configured to receive downlink control information DCI sent by an IAB node at a second PDCCH monitoring occasion when a SMTC window configured by a measurement time configuration of a synchronization signal SS or a physical broadcast channel Block PBCH Block on an MT side of the access backhaul integrated IAB node collides with the first PDCCH monitoring occasion on a DU side;
the DCI is used for indicating the terminal not to monitor the PDCCH.
Optionally, the receiving apparatus, wherein the first PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource;
The time domain resources of the terminal are configured as flexible resources.
Optionally, the receiving device, wherein the second PDCCH monitoring occasion is a PDCCH monitoring occasion closest to the first PDCCH monitoring occasion.
Optionally, the receiving device, wherein the second PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side;
the time domain resource of the terminal is configured as a flexible resource, the IAB node sends PDCCH on the DU side, and the time slot format sent to the terminal indicates SFI as a downlink resource.
Optionally, in the receiving apparatus, the downlink control information DCI indicates, through a preset indication field, that the terminal does not perform PDCCH monitoring.
Optionally, the receiving device, wherein the preset indication field includes N bits, configured to indicate that the terminal does not perform PDCCH monitoring on N consecutive PDCCH monitoring occasions; wherein N is an integer greater than or equal to 1.
Optionally, the receiving apparatus, wherein the apparatus further includes a monitoring module 820 configured to:
monitoring PDCCH is still carried out when the time domain resource of the terminal is configured as the downlink resource at N PDCCH monitoring occasions indicated by the preset indication field;
When the time domain resource of the terminal is configured as the uplink resource, the monitoring of the PDCCH is not executed at N PDCCH monitoring occasions indicated by the preset indication field;
when the time domain resource of the terminal is configured as flexible resource and the time slot format indication SFI indicated as uplink resource or flexible resource is received, the monitoring of the PDCCH is not executed at N PDCCH monitoring occasions indicated by the preset indication field;
and in N PDCCH monitoring occasions indicated by the preset indication field, when the time domain resource of the terminal is configured as flexible resource and SFI indicated as uplink resource is received or SFI is not received, monitoring of PDCCH is still executed.
In another aspect of the embodiment of the present invention, there is further provided a network device, where the network device is an access backhaul integrated IAB node, as shown in fig. 9, including: a processor 901; and a memory 903 connected to the processor 901 through a bus interface 902, the memory 903 being configured to store programs and data used by the processor 901 when performing operations, the processor 901 calling and executing the programs and data stored in the memory 903.
Wherein the transceiver 904 is connected to the bus interface 902 for receiving and transmitting data under the control of the processor 901, in particular the processor 901 is arranged to read a program in the memory 903, performing the following procedure:
When the synchronous signal SS or physical broadcast channel Block PBCH Block measurement time configuration SMTC window of the MT side conflicts with the first PDCCH monitoring time of the DU side, the transmission of the PDCCH of the DU side is abandoned;
at a second PDCCH monitoring time, sending downlink control information DCI to the terminal; the DCI is used for indicating the terminal not to monitor the PDCCH.
Optionally, the network device, wherein the first PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource;
the time domain resources of the terminal are configured as flexible resources.
Optionally, the network device, wherein the second PDCCH monitoring occasion is a PDCCH monitoring occasion closest to the first PDCCH monitoring occasion.
Optionally, the network device, wherein the second PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side; the time domain resource of the terminal is configured as a flexible resource, the IAB node sends PDCCH on the DU side, and the time slot format sent to the terminal indicates SFI as a downlink resource. Optionally, the network device, wherein the downlink control information DCI indicates, through a preset indication field, that the terminal does not perform PDCCH monitoring.
Optionally, the network device, where the preset indication field includes N bits, configured to indicate that the terminal does not perform PDCCH monitoring on N consecutive PDCCH monitoring occasions; wherein N is an integer greater than or equal to 1.
Optionally, the network device, wherein the processor 901 is further configured to:
and at the PDCCH monitoring time when the DCI indicates not to monitor, if the time domain resource of the terminal is configured as a flexible resource, transmitting an SFI (SFI) indicating uplink resource or flexible resource to the terminal.
Where in FIG. 9, a bus architecture may comprise any number of interconnected buses and bridges, with various circuits of the one or more processors, specifically represented by processor 901, and the memory, represented by memory 903, being linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 904 may be a number of elements, i.e. comprising a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 901 is responsible for managing the bus architecture and general processing, and the memory 903 may store data used by the processor 901 in performing operations.
Another aspect of the embodiments of the present invention further provides a network device, where the network device is a terminal, as shown in fig. 10, including: a processor 1001; and a memory 1003 connected to the processor 1001 through a bus interface 1002, the memory 1003 storing programs and data used by the processor 1001 when performing operations, the processor 1001 calling and executing the programs and data stored in the memory 1003.
The transceiver 1004 is connected to the bus interface 1002, and is configured to receive and transmit data under the control of the processor 1001, and specifically, the processor 1001 is configured to read a program in the memory 1003, and execute the following procedures:
when a measurement time configuration SMTC window of a synchronization signal SS or a physical broadcast channel Block PBCH Block of an MT side of an access backhaul integrated IAB node collides with a first PDCCH monitoring occasion of a DU side, receiving downlink control information DCI sent by the IAB node at a second PDCCH monitoring occasion;
the DCI is used for indicating the terminal not to monitor the PDCCH.
Optionally, the network device, wherein the first PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource;
The time domain resources of the terminal are configured as flexible resources.
Optionally, the network device, wherein the second PDCCH monitoring occasion is a PDCCH monitoring occasion closest to the first PDCCH monitoring occasion.
Optionally, the network device, wherein the second PDCCH monitoring opportunity satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side;
the time domain resource of the terminal is configured as a flexible resource, the IAB node sends PDCCH on the DU side, and the time slot format sent to the terminal indicates SFI as a downlink resource.
Optionally, the network device, wherein the downlink control information DCI indicates, through a preset indication field, that the terminal does not perform PDCCH monitoring.
Optionally, the network device, where the preset indication field includes N bits, configured to indicate that the terminal does not perform PDCCH monitoring on N consecutive PDCCH monitoring occasions; wherein N is an integer greater than or equal to 1.
Optionally, the network device, wherein the method further includes:
monitoring PDCCH is still carried out when the time domain resource of the terminal is configured as the downlink resource at N PDCCH monitoring occasions indicated by the preset indication field;
When the time domain resource of the terminal is configured as the uplink resource, the monitoring of the PDCCH is not executed at N PDCCH monitoring occasions indicated by the preset indication field;
when the time domain resource of the terminal is configured as flexible resource and the time slot format indication SFI indicated as uplink resource or flexible resource is received, the monitoring of the PDCCH is not executed at N PDCCH monitoring occasions indicated by the preset indication field;
and in N PDCCH monitoring occasions indicated by the preset indication field, when the time domain resource of the terminal is configured as flexible resource and SFI indicated as uplink resource is received or SFI is not received, monitoring of PDCCH is still executed.
It should be noted that in fig. 10, the bus architecture may include any number of interconnecting buses and bridges, and in particular, one or more processors represented by the processor 1001 and various circuits of the memory represented by the memory 1003 may be chained together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1004 may be a number of elements, i.e. include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 1005 may also be an interface capable of interfacing with an inscribed desired device for a different terminal, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1003 may store data used by the processor 1001 in performing operations.
Those skilled in the art will appreciate that all or part of the steps implementing the above embodiments may be implemented by hardware, or may be implemented by a program including instructions for performing some or all of the steps of the above methods; and the program may be stored in a readable storage medium, which may be any form of storage medium.
In addition, a specific embodiment of the present invention also provides a computer readable storage medium, on which a computer program is stored, where the program, when executed by a processor, implements steps in a method for transmitting a PDCCH as described in any one of the above, or implements steps in a method for receiving a PDCCH as described in any one of the above.
In the several embodiments provided in this application, it should be understood that the disclosed methods and apparatus may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.
The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and changes can be made without departing from the principles of the present invention, and such modifications and changes should also be considered as being within the scope of the present invention.
Claims (17)
1. The method for transmitting the physical downlink control channel PDCCH is applied to an access backhaul integrated IAB node, and is characterized by comprising the following steps:
when the synchronous signal SS or physical broadcast channel Block PBCH Block measurement time configuration SMTC window of the MT side conflicts with the first PDCCH monitoring time of the DU side, the transmission of the PDCCH of the DU side is abandoned;
at a second PDCCH monitoring time, sending downlink control information DCI to the terminal; the DCI is used for indicating the terminal not to monitor the PDCCH;
the second PDCCH monitoring occasion satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side; the time domain resource of the terminal is configured as flexible resource, the IAB node sends PDCCH at the DU side, and the time slot format sent to the terminal indicates SFI as downlink resource;
and at the PDCCH monitoring time when the DCI indicates not to monitor, if the time domain resource of the terminal is configured as a flexible resource, transmitting an SFI (SFI) indicating uplink resource or flexible resource to the terminal.
2. The transmission method according to claim 1, wherein the first PDCCH monitoring occasion satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource;
The time domain resources of the terminal are configured as flexible resources.
3. The transmission method of claim 1, wherein the second PDCCH monitoring occasion is a PDCCH monitoring occasion that is the nearest to the first PDCCH monitoring occasion.
4. The transmission method according to claim 1, wherein the downlink control information DCI indicates, through a preset indication field, that the terminal does not perform PDCCH monitoring.
5. The transmission method according to claim 4, wherein the preset indication field includes N bits, and is configured to indicate that the terminal does not perform PDCCH monitoring for N consecutive PDCCH monitoring occasions; wherein N is an integer greater than or equal to 1.
6. A method for receiving a physical downlink control channel PDCCH, applied to a terminal, the method comprising:
when a measurement time configuration SMTC window of a synchronization signal SS or a physical broadcast channel Block PBCH Block of an MT side of an access backhaul integrated IAB node collides with a first PDCCH monitoring occasion of a DU side, receiving downlink control information DCI sent by the IAB node at a second PDCCH monitoring occasion;
the DCI is used for indicating the terminal not to monitor the PDCCH;
the second PDCCH monitoring occasion satisfies one of the following conditions:
The time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side; the time domain resource of the terminal is configured as flexible resource, the IAB node sends PDCCH at the DU side, and the time slot format sent to the terminal indicates SFI as downlink resource;
and receiving an SFI (SFI) which is sent by the IAB node and indicates uplink resources or flexible resources if the DCI indicates the PDCCH monitoring time without monitoring and the time domain resources of the terminal are configured as flexible resources.
7. The reception method of claim 6, wherein the first PDCCH monitoring occasion satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource;
the time domain resources of the terminal are configured as flexible resources.
8. The method of receiving of claim 6, wherein the second PDCCH monitoring occasion is a PDCCH monitoring occasion that is the closest to the first PDCCH monitoring occasion.
9. The receiving method according to claim 6, wherein the downlink control information DCI indicates that the terminal does not perform PDCCH monitoring through a preset indication field.
10. The receiving method according to claim 9, wherein the preset indication field includes N bits, and is configured to indicate that the terminal does not perform PDCCH monitoring for N consecutive PDCCH monitoring occasions; wherein N is an integer greater than or equal to 1.
11. The method of receiving according to claim 9, wherein the method further comprises:
monitoring PDCCH is still carried out when the time domain resource of the terminal is configured as the downlink resource at N PDCCH monitoring occasions indicated by the preset indication field;
when the time domain resource of the terminal is configured as the uplink resource, the monitoring of the PDCCH is not executed at N PDCCH monitoring occasions indicated by the preset indication field;
when the time domain resource of the terminal is configured as flexible resource and the time slot format indication SFI indicated as uplink resource or flexible resource is received, the monitoring of the PDCCH is not executed at N PDCCH monitoring occasions indicated by the preset indication field;
and in N PDCCH monitoring occasions indicated by the preset indication field, when the time domain resource of the terminal is configured as flexible resource and SFI indicated as uplink resource is received or SFI is not received, monitoring of PDCCH is still executed.
12. An access backhaul integrated IAB node device comprising a transceiver, the transceiver configured to:
when the synchronous signal SS or physical broadcast channel Block PBCH Block measurement time configuration SMTC window of the MT side conflicts with the first PDCCH monitoring time of the DU side, the transmission of the PDCCH of the DU side is abandoned;
At a second PDCCH monitoring time, sending downlink control information DCI to the terminal; the DCI is used for indicating the terminal not to monitor the PDCCH;
the second PDCCH monitoring occasion satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side; the time domain resource of the terminal is configured as flexible resource, the IAB node sends PDCCH at the DU side, and the time slot format sent to the terminal indicates SFI as downlink resource;
and at the PDCCH monitoring time when the DCI indicates not to monitor, if the time domain resource of the terminal is configured as a flexible resource, transmitting an SFI (SFI) indicating uplink resource or flexible resource to the terminal.
13. A terminal comprising a transceiver, the transceiver configured to:
when a measurement time configuration SMTC window of a synchronization signal SS or a physical broadcast channel Block PBCH Block of an MT side of an access backhaul integrated IAB node collides with a first PDCCH monitoring occasion of a DU side, receiving downlink control information DCI sent by the IAB node at a second PDCCH monitoring occasion;
the DCI is used for indicating the terminal not to monitor the PDCCH;
the second PDCCH monitoring occasion satisfies one of the following conditions:
The time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side; the time domain resource of the terminal is configured as flexible resource, the IAB node sends PDCCH at the DU side, and the time slot format sent to the terminal indicates SFI as downlink resource;
and receiving an SFI (SFI) which is sent by the IAB node and indicates uplink resources or flexible resources if the DCI indicates the PDCCH monitoring time without monitoring and the time domain resources of the terminal are configured as flexible resources.
14. A device for transmitting a physical downlink control channel PDCCH, applied to an access backhaul integrated IAB node, comprising:
the processing module is used for giving up the transmission of the PDCCH at the DU side when the SMTC window is configured to conflict with the first PDCCH monitoring time at the DU side by the synchronous signal SS or the physical broadcast channel Block PBCH Block measurement time at the MT side;
a sending module, configured to send downlink control information DCI to a terminal at a second PDCCH monitoring occasion; the DCI is used for indicating the terminal not to monitor the PDCCH;
the second PDCCH monitoring occasion satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side; the time domain resource of the terminal is configured as flexible resource, the IAB node sends PDCCH at the DU side, and the time slot format sent to the terminal indicates SFI as downlink resource;
The sending module is further configured to send, to the terminal, an SFI indicating an uplink resource or a flexible resource if the time domain resource of the terminal is configured as the flexible resource at the PDCCH monitoring opportunity when the DCI indicates that no monitoring is performed.
15. A receiving apparatus of a physical downlink control channel PDCCH, applied to a terminal, the apparatus comprising:
a receiving module, configured to receive downlink control information DCI sent by an IAB node at a second PDCCH monitoring occasion when a SMTC window configured by a synchronization signal SS or a measurement time of a physical broadcast channel Block PBCH Block on an MT side of the access backhaul integrated IAB node collides with the first PDCCH monitoring occasion on a DU side;
the DCI is used for indicating the terminal not to monitor the PDCCH;
the second PDCCH monitoring occasion satisfies one of the following conditions:
the time domain resource of the terminal is configured as a downlink resource, and the IAB node transmits PDCCH on the DU side; the time domain resource of the terminal is configured as flexible resource, the IAB node sends PDCCH at the DU side, and the time slot format sent to the terminal indicates SFI as downlink resource;
the receiving module is further configured to: and receiving an SFI (SFI) which is sent by the IAB node and indicates uplink resources or flexible resources if the DCI indicates the PDCCH monitoring time without monitoring and the time domain resources of the terminal are configured as flexible resources.
16. A network device, comprising: a processor, a memory, and a program stored on the memory and executable on the processor, which when executed by the processor, implements the method of transmitting the PDCCH as claimed in any one of claims 1 to 5, or implements the method of receiving the PDCCH as claimed in any one of claims 6 to 11.
17. A computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps in the method for transmitting a PDCCH as claimed in any one of claims 1 to 5, or the steps in the method for receiving a PDCCH as claimed in any one of claims 6 to 11.
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| CN115942465A (en) * | 2021-09-30 | 2023-04-07 | 维沃移动通信有限公司 | Downlink control channel monitoring method and device and communication equipment |
| EP4434280A1 (en) * | 2022-01-04 | 2024-09-25 | Apple Inc. | Multi-pdcch monitoring and multi-pdsch/pusch scheduling in wireless communication |
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