CN107295674B - Resource allocation method, network equipment and terminal equipment - Google Patents
Resource allocation method, network equipment and terminal equipment Download PDFInfo
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- CN107295674B CN107295674B CN201610437227.1A CN201610437227A CN107295674B CN 107295674 B CN107295674 B CN 107295674B CN 201610437227 A CN201610437227 A CN 201610437227A CN 107295674 B CN107295674 B CN 107295674B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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Abstract
A resource allocation method, network equipment and terminal equipment are used for realizing that the network equipment allocates resources for a first terminal equipment to send a short-sending short-delay uplink service in time. The method comprises the following steps: the network equipment informs the first terminal equipment of first resources used for the first terminal equipment to send uplink services, wherein the first resources comprise second resources which are allocated to at least one second terminal equipment by the network equipment, and the second resources are used for the at least one second terminal equipment to send the uplink services; and the network equipment informs at least one second terminal equipment not to send the uplink service on the second resource. In the embodiment of the invention, the network equipment informs at least one second terminal not to send the uplink service on the second resource, so that the second terminal equipment is prevented from interfering and colliding with the first terminal equipment due to the fact that the second terminal equipment continuously occupies the second resource, the first terminal equipment and the second terminal equipment share the resource, and the resource utilization rate is improved.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a resource allocation method, a network device, and a terminal device.
Background
Currently, short Transmission Time Interval (sTTI) uplink services require a short Time Interval from a terminal device having a requirement to transmit the uplink service to the terminal device actually transmitting the uplink service, that is, the short Transmission Time Interval uplink services have the characteristics of low delay and high reliability. Therefore, the network device needs to allocate sufficient resources for the transmission of the short transmission time interval uplink service in time to satisfy the characteristics of low delay and high reliability of the short transmission time interval uplink service. The specific time interval of the specific short transmission time interval may be determined according to system requirements or standard definitions.
When the network device allocates the resource for the terminal device to send the short sending time interval uplink service, if the current resources are occupied or the current unoccupied resources are not enough to support the terminal device to send the short sending time interval uplink service, the network device cannot allocate the resource for the terminal device to send the short sending time interval uplink service in time. As shown in fig. 1, the terminal device can transmit the short transmission time interval uplink service only when enough idle resources are required to be allocated to the terminal device, which results in a longer time delay for the terminal device to transmit the short transmission time interval uplink service, and violates the characteristics of low time delay and high reliability of the short transmission time interval uplink service.
In order to ensure that the network device can timely allocate resources for the terminal device to send the short sending time interval uplink service, a scheme of reserving bandwidth resources may be adopted. As shown in fig. 2, the network device reserves bandwidth resources for service transmission for short transmission time interval uplink traffic and other uplink traffic, respectively. However, since data transmission of the short-transmission-time-interval uplink service is bursty, a transmitted data packet is generally small, and reserving bandwidth resources for the short-transmission-time-interval uplink service by network equipment easily causes resource waste, and the resource utilization rate of the scheme adopting the reserved bandwidth resources is low.
Disclosure of Invention
The embodiment of the invention provides a resource allocation method, network equipment and terminal equipment, which are used for realizing that the network equipment allocates resources for the first terminal equipment to send a short-delay uplink service in time.
Short Transmission Time Interval (sTTI) traffic is a characteristic of having a short delay and high reliability.
Taking the Ultra-reliable and Low Latency Communications (URLLC) service defined in the fifth Generation network (5th Generation, 5G) as an example, the URLLC service also has the characteristics of short Latency (also referred to as Low Latency) and high reliability. In the embodiment of the present invention, services with characteristics of short delay and high reliability are collectively referred to as short delay services, which may be sTTI services, URLLC services, mtc (Ultra-reliable Machine Type Communication) services, or other types of services, and are not limited herein. Accordingly, services without the characteristics of short latency and high reliability are collectively referred to as non-short latency services, which may be non-sTTI services, MBB services, or other types of services, and are not limited herein. The specific short-delay and high-reliability characteristics may be defined with reference to the requirements of the system or definitions in the standard.
In one aspect, an embodiment of the present invention provides a resource allocation method, including:
a network device informs a first terminal device of a first resource used for the first terminal device to send an uplink service, wherein the first resource comprises a second resource which is allocated to at least one second terminal device by the network device, and the second resource is used for the at least one second terminal device to send the uplink service;
and the network equipment informs the at least one second terminal equipment not to send the uplink service on the second resource.
Therefore, the network device informs the first terminal device of the first resource used by the first terminal device for sending the uplink service, the network device can allocate the resource used by the first terminal device for sending the uplink service to the first terminal device in time, and the network device informs at least one second terminal not to send the uplink service on the second resource, so that the second terminal device is prevented from continuously occupying the second resource to cause the second terminal device and the first terminal device to generate interference and conflict with each other, the first terminal device and the second terminal device share the resource, and the resource utilization rate is improved.
In one possible design, the first resource is composed of at least one time domain resource unit, and further, the time domain resource unit includes one or a combination of the following: symbol, slot, subframe.
Or the first resource is composed of at least one frequency domain resource unit, and further, the frequency domain resource unit includes one or a combination of the following: subcarrier, subcarrier group, resource block group.
In one possible design, the method for the network device to notify the at least one second terminal device not to send uplink traffic on the second resource includes:
and the network equipment sends a downlink control signaling to the at least one second terminal equipment, wherein the downlink control signaling is used for indicating the at least one second terminal equipment not to send the uplink service on the second resource.
In a possible design, the uplink service sent by the first terminal device is a short-delay uplink service, and the uplink service sent by the at least one second terminal device is a non-short-delay uplink service.
Therefore, the network equipment can timely allocate the resource for the first terminal equipment to send the short-delay uplink service, and the requirements of low delay and high reliability of the short-delay uplink service are further met.
In one possible design, the first terminal device and the second terminal device are the same terminal device, or the first terminal device and the second terminal device are different terminal devices.
In another aspect, a resource allocation method provided in an embodiment of the present invention includes:
the second terminal equipment receives a notification which is sent by the network equipment and used for indicating the second terminal equipment not to send the uplink service on the second resource;
the second resource is a resource which has been allocated to the second terminal device by the network device and is used for the second terminal device to send uplink service;
and the second terminal equipment determines not to send the uplink service on the second resource.
In one possible design, the method for a second terminal device to receive a notification sent by a network device and used for instructing the second terminal device not to send uplink traffic on a second resource includes:
and the second terminal equipment receives a downlink control signaling sent by the network equipment, wherein the downlink control signaling is used for indicating that the second terminal equipment does not send uplink service on the second resource.
In one possible design, the method further includes: the second terminal equipment performs Discrete Fourier Transform (DFT) on the N modulated symbols obtained by modulation to obtain N symbols, wherein N is an integer greater than or equal to 1; and the second terminal equipment maps M symbols in the N symbols obtained by DFT to a third resource, wherein the third resource is used for the second terminal equipment to send uplink service, and the third resource does not include the second resource.
In one possible design, the method further includes: the second terminal device performs Discrete Fourier Transform (DFT) on M modulation symbols in the N modulation symbols obtained by modulation to obtain M symbols, wherein N is an integer greater than or equal to 1, and M is an integer smaller than N; and the second terminal equipment maps the M symbols obtained by DFT to a third resource, wherein the third resource is used for the second terminal equipment to send uplink service, and the third resource does not include the second resource.
In one possible design, the second resource is not used to carry N-M of the N symbols.
In one possible design, N-M of the N symbols are not mapped.
In one possible design, N-M of the N modulation symbols are not DFT-coded.
In one possible design, the second resource is composed of at least one time domain resource unit, and further, the time domain resource unit includes one or a combination of the following: symbol, slot, subframe.
Or the second resource is composed of at least one frequency domain resource unit, and further, the frequency domain resource unit includes one or a combination of the following: subcarrier, subcarrier group, resource block group.
In one possible design, the second resource is used for the first terminal device to transmit uplink traffic.
In a possible design, the uplink service sent by the first terminal device is a short-delay uplink service, and the uplink service sent by the second terminal device is a non-short-delay uplink service.
In one possible design, the first terminal device and the second terminal device are the same terminal device, or the first terminal device and the second terminal device are different terminal devices.
In another aspect, an embodiment of the present invention provides a network device, where the network device has a function of implementing a behavior of the network device in the above method design. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions. The modules may be software and/or hardware.
In one possible design, the network device includes a processing unit and a sending unit, and the processing unit is configured to send the notification message involved in the above method to the first terminal device and the second terminal device through the sending unit. The sending unit is used for communication with terminal equipment (including the first terminal equipment and the second terminal equipment).
In one possible design, the network device includes a processor and a transmitter, and the processor is configured to send the notification message involved in the above method to the first terminal device and the second terminal device through the transmitter. The transmitter is arranged to support communication between the network device and terminal devices (the first terminal device and the second terminal device). The network device may also include a memory for coupling with the processor that retains program instructions and data necessary for the terminal device.
In another aspect, an embodiment of the present invention provides a terminal device, where the terminal device has a function of implementing a behavior of the terminal device in the above method design. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions. The modules may be software and/or hardware.
In a possible design, the structure of the terminal device includes a receiving unit and a processing unit, where the receiving unit is configured to receive the notification sent by the network device in the above method, and the processing unit is configured to determine that the terminal device does not send the uplink service on the second resource according to the notification received by the receiving unit.
In one possible design, the terminal device includes a receiver configured to support communication between the terminal device and the network device, and a processor configured to determine that the terminal device does not send uplink traffic on the second resource according to a notification received by the receiver. The terminal device may also include a memory for coupling with the processor that retains program instructions and data necessary for the terminal device.
In the technical solution provided in the embodiment of the present invention, after preempting, by the network device, the second resource allocated to at least one second terminal device, the second resource is allocated to the first terminal device as the first resource, where the first resource is used for the first terminal device to send the uplink service, and the uplink service may be a short sending time interval uplink service, and the network device can allocate, in time, the resource for the first terminal device to send the short delay uplink service, so as to ensure the requirements of short delay, low delay and high reliability. And the network equipment informs at least one second terminal not to send uplink service on the second resource, so that the second terminal equipment is prevented from continuously occupying the second resource to cause interference and conflict between the second terminal equipment and the first terminal equipment, the first terminal equipment and the second terminal equipment share the resource, and the resource utilization rate is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a resource allocation method in the prior art.
Fig. 2 is a schematic diagram of a resource allocation method in the prior art.
Fig. 3 is a schematic view of a wireless communication scenario of a cellular network according to an embodiment of the present invention.
Fig. 4 is a flowchart illustrating a resource allocation method according to an embodiment of the present invention.
Fig. 5 is a flowchart illustrating a resource allocation method according to an embodiment of the present invention.
Fig. 6A is a schematic diagram illustrating a resource allocation method according to an embodiment of the present invention.
Fig. 6B is a schematic diagram illustrating a resource allocation method according to an embodiment of the present invention.
Fig. 6C is a schematic diagram illustrating a resource allocation method according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of mapping data of a resource allocation method according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of mapping data of a resource allocation method 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 an embodiment of the present invention.
Fig. 11 is a schematic structural diagram of a second terminal device according to an embodiment of the present invention.
Fig. 12 is a schematic structural diagram of a second terminal device according to an embodiment of the present invention.
Fig. 13 is a schematic structural diagram of a wireless communication system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solution provided in the embodiments of the present invention is applicable to a cellular network wireless communication scenario, which is illustrated in fig. 3, and includes a network device and at least one terminal device connected to the network device, where the network device allocates an air interface resource for service transmission to the terminal device.
The network device according to the embodiments of the present invention may be a network device, an access point, or a device in an access network that communicates with a wireless terminal device over an air interface through one or more sectors. The network device may be configured to interconvert received air frames with Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) network. The network device may also coordinate attribute management for the air interface. For example, the network device may be a Base Transceiver Station (BTS) in a Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA), a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB) or e-NodeB) in LTE, or a Base Station in a future network, such as a Base Station in 4.5G or 5G, which is not limited in the embodiment of the present invention.
The terminal device according to the embodiments of the present invention may be a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. Wireless terminal devices, which may be mobile terminal devices such as mobile telephones (or "cellular" telephones) and computers having mobile terminal devices, for example, portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). A wireless Terminal Device may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal Device (Remote Terminal), an Access Terminal Device (Access Terminal), a User Terminal Device (User Terminal), a User Agent (User Agent), a User Device (User Device), or a User Equipment (User Equipment).
The terminal device related to the embodiment of the present invention includes a first terminal device and a second terminal device, and when the network device allocates a resource for the first terminal device to send an uplink service, preferably, if all current resources are already occupied or the currently unoccupied resources are insufficient to support the first terminal device to send the uplink service, the network device can allocate the resource for sending the uplink service to the first terminal device in time through the technical solution provided by the embodiment of the present invention. Preferably, if the currently unoccupied resources are sufficient to support the first terminal device to send the uplink service, the network device may allocate, by using a resource allocation technique in the prior art, resources for the first terminal device to send the uplink service.
Based on the application scenario, in the technical solution provided in the embodiment of the present invention, the network device allocates the resource for the first terminal device to send the uplink service in a manner of "preempting" the resource of the second terminal device. That is, the network device may allocate a second resource, which is already allocated to the second terminal device, as a first resource to the first terminal device, where the first resource is used for the first terminal device to send the uplink service, where the number of the second terminal devices may be one or more, and the second resource is used for the second terminal device to send the uplink service.
The uplink service sent by the first terminal device may be a short delay service, such as a short transmission time interval uplink service, or an Ultra-reliable and Low Latency Communications (URLLC) service. Compared with the uplink service sent by the first terminal device, the uplink service sent by the second terminal device may have lower requirements on delay and reliability, and the uplink service sent by the second terminal device is a non-short delay service, such as a non short Transmission Time Interval (sTTI) uplink service or a Mobile Broadband (MBB) service.
The International Telecommunications Union (ITU) has defined three major classes of services in the desire and requirements for 5G, namely enhanced Mobile Broadband (eMBB) communication services, URLLc services and mass Machine communication (mtc), respectively. Since the expected delay of the URLLc service is very short, and is only 1ms at minimum, resources need to be allocated immediately for transmission of URLLc service data, and the URLLc service data cannot wait. The reliability of the uMTC service during data transmission is also high, and the ultra-high reliability of 99.999% can be generally required. In order to ensure that the burst data transmission of the URLLc terminal device meets the requirements of low delay and high reliability, the network device needs to allocate air interface resources for data transmission to the URLLc terminal device in time.
The embodiment of the invention provides a resource allocation method, network equipment and a wireless communication system, which are used for realizing that the network equipment allocates resources for a first terminal equipment to send a short-delay uplink service to the first terminal equipment in time. The resource allocation method, the network device and the system are based on the same inventive concept, and because the principles of solving the problems of the resource allocation method, the network device and the system are similar, the implementation of the network device, the system and the method can be mutually referred, and repeated parts are not repeated.
On the network device side, as shown in fig. 4, a resource allocation method provided in an embodiment of the present invention includes:
s401, a network device informs a first terminal device of a first resource used by the first terminal device to send an uplink service, wherein the first resource comprises a second resource which is allocated to at least one second terminal device by the network device, and the second resource is used by the at least one second terminal device to send the uplink service;
the network device allocates a first resource for the first terminal device to send an uplink service, where the uplink service sent by the first terminal device may be a short delay service, and the uplink service sent by the second terminal device is a non-short delay service, where the uplink service may include an uplink service data signal and an uplink control signal.
The first terminal device and the second terminal device may be the same terminal device, which indicates that the uplink service of the first terminal device may include a short transmission time interval uplink service and a non-short transmission time interval uplink service; or, the first terminal device and the second terminal device are different terminal devices, which means that the uplink service of the first terminal device is different from the uplink service of the second terminal device.
When the first terminal device has a requirement for sending the uplink service, the network device may receive a resource request message sent from the first terminal device, where the resource request message is used by the first terminal device to request the network device to allocate, to the first terminal device, a resource used by the first terminal device to send the uplink service, and after receiving the resource request message sent by the first terminal device, the network device may allocate, to the first terminal device, the resource used by the first terminal device to send the uplink service, including performing S401.
The first resource refers to a resource allocated to the first terminal device by the network device, and the first resource is used for the first terminal device to send the uplink service. The second resource refers to a resource which is allocated to the first terminal device by preemption in a resource allocated to the second terminal device by the network device, and the second resource is not yet used for carrying the uplink service of the second terminal device, that is, the second terminal device has not yet sent the uplink service on the second resource, and the second terminal device may be one terminal device or a plurality of terminal devices.
It should be noted that the first resource may be all or part of the resource used for the first terminal device to send the uplink traffic. For example, the first resource is all resources used for the first terminal device to send the uplink service, and all resources used for the first terminal device to send the uplink service are from the second resource of the second terminal, that is, all resources used for the first terminal device to send the uplink service are from "preemption". For another example, the first resource is a part of resources used for the first terminal device to send the uplink service, a part of the resources used for the first terminal device to send the uplink service is from the second resource of the second terminal, and the other part of resources except the first resource in the resources used for the first terminal device to send the uplink service may be idle resources that are not occupied currently.
Similarly, the second resource refers to a resource which is preemptively allocated to the first terminal device from among the resources already allocated to the second terminal device by the network device, and the second resource may be all or part of the resources allocated to the second terminal device by the network device. For example, when the second resource is all resources allocated to the second terminal device by the network device, the network device allocates all resources allocated to the second terminal device to the first terminal device after preempting them. For another example, when the second resource is a part of resources allocated to the second terminal device by the network device, the second resource in the resources allocated to the second terminal device by the network device is allocated to the first terminal device after being preempted, and other parts of resources, except the second resource, in the resources allocated to the second terminal device by the network device may be continuously used for the second terminal device to perform the uplink service.
When the first terminal device and the second terminal device are the same device, the network device in the embodiment of the present invention allocates the resource allocated to the non-short transmission time interval uplink service to the short transmission time interval uplink service after preempting the resource allocated to the non-short transmission time interval uplink service.
For example, for the resources that have been allocated to the second terminal device by the network device, that is, the resources occupied by the second terminal device, preferably, the network device may select, as the second resource, the resource reserved by the second terminal device for normal data channel transmission, and, less preferably, the network device may select, as the second resource, the resource reserved by the second terminal device for carrying a Demodulation Reference Signal (DMRS), a Sounding Reference Signal (SRS), an uplink control Signal, or a random access Signal, and the network device allocates to the first terminal device after preempting the selected second resource.
Compared with the short transmission time interval uplink service transmitted by the first terminal device, the time delay and reliability requirements of the non-short transmission time interval uplink service transmitted by the second terminal device can be lower. Optionally, in this embodiment, the time delay and the reliability requirement of different terminal devices may be identified by the priority level, for example, the priority level of the first terminal device is higher than that of the second terminal device, which indicates that the time delay and the reliability requirement of the uplink service sent by the first terminal device are higher than that of the first terminal device.
Optionally, the first resource allocated to the first terminal device by the network device may be composed of at least one time domain resource unit, and each time domain resource unit may carry certain information. For example, when the first resource is composed of at least one time domain resource unit, the time domain resource unit may include one or a combination of the following: symbol (symbol), slot, subframe (subframe). It should be understood that the time domain resource units herein may be not only various types of time intervals defined in LTE, but also time intervals defined in future 5G (i.e. New Radio Access Technology, NR for short).
Optionally, the first resource allocated to the first terminal device by the network device may also be composed of at least one frequency domain resource unit, and each frequency domain resource unit may carry certain information. For example, when the first resource is composed of at least one frequency domain resource unit, the frequency domain resource unit may include one or a combination of: subcarrier (subcarrier), subcarrier group, Resource Block (RB), Resource Block group.
In this embodiment, after receiving the notification, sent by the network device, for instructing the first terminal device to send the first resource of the uplink service, the first terminal device may send the uplink service on the first resource.
S402, the network device notifies at least one second terminal device not to send the uplink service on the second resource.
Optionally, the second resource may be used for other terminal devices to send uplink traffic, for example, the second resource may be used for the first terminal device to send uplink traffic.
Specifically, after preempting a second resource allocated to at least one second terminal device, the network device allocates the second resource to the first terminal device as a first resource, and the network device needs to notify the at least one second terminal device not to send an uplink service on the second resource, so that the at least one second terminal device does not send the uplink service on the second resource after receiving a notification sent by the network device and used for instructing the at least one second terminal device not to send the uplink service on the second resource, thereby ensuring that the at least one second terminal device does not occupy the second resource any more, and avoiding that the second terminal device continues to occupy the second resource to cause mutual interference and collision between the second terminal device and the first terminal device.
Optionally, the uplink service sent by the first terminal may be a short-delay uplink service, and the uplink service sent by the second terminal device is a non-short-delay uplink service.
Optionally, the first terminal device and the second terminal device may be the same terminal device, or the first terminal device and the second terminal device may be different terminal devices.
Optionally, the network device may send a downlink control signaling to the at least one second terminal device, where the downlink control signaling is used to indicate that the at least one second terminal device does not send the uplink service on the second resource. Further, the downlink control signaling may be indication information belonging to different levels, for example, the level indication information may be indication information of a cell-level (cell-specific) or indication information of a user equipment-level (UE-specific); the second terminal device may perform blind detection in the search space corresponding to the level according to the level to which the indication information belongs, so as to receive the indication information.
In the embodiment of the present invention, the notification sent by the network device to the terminal device (including the first terminal device and/or the second terminal device) may be on a Physical Downlink Control Channel (PDCCH) of a subframe, where the subframe may be a subframe where a first resource allocated to the first terminal device is located, or a subframe before the subframe where the first resource is located.
In the foregoing, with reference to fig. 4, the resource allocation method provided in the embodiment of the present invention is described in detail from the network device side, and in the following, the resource allocation method provided in the embodiment of the present invention is described from the terminal device side, and as shown in fig. 5, on the second terminal device side, the resource allocation method provided in the embodiment of the present invention includes:
s501, the second terminal device receives a notification sent by the network device and used for indicating the second terminal device not to send the uplink service on the second resource;
the second resource is a resource which has been allocated to the second terminal device by the network device and is used for the second terminal device to send the uplink service;
s502, the second terminal device determines not to send the uplink service on the second resource.
For the content of the method embodiment of the second terminal device side, reference may be made to the content of the method embodiment of the network device side, which is not described herein again.
The following illustrates a resource allocation method according to an embodiment of the present invention.
Fig. 6A is a schematic diagram of resources occupied by at least one second terminal device, where each lattice represents one resource unit, each lattice may represent one symbol (symbol), or one slot, or one subframe in the time domain, and each lattice may represent one subcarrier, or one resource block in the frequency domain.
Taking the second resource of at least one second terminal device preempted by the network device as an example of a time domain resource unit, as shown in fig. 6B, the network device selects the time domain resource of the 5th column lattice and the time domain resource of the 12 th column lattice occupied by the at least one second terminal device as the second resource, and allocates the second resource to the first terminal device by the network device, where the second resource is the first resource allocated to the first terminal device by the network device.
Taking the second resource of the at least one second terminal device preempted by the network device as an example, as shown in fig. 6C, the network device selects the frequency domain resource of the lattice in the 5th row and the frequency domain resource of the lattice in the 10 th row occupied by the at least one second terminal device as the second resource, and allocates the second resource to the first terminal device by the network device, where the second resource is the first resource allocated to the first terminal device by the network device.
In the technical solution provided in the embodiment of the present invention, after preempting the second resource allocated to at least one second terminal device by the network device, the second resource is allocated to the first terminal device as the first resource, so that the network device can allocate the resource for the first terminal device to send the short transmission time interval uplink service in time, thereby ensuring the requirements of low latency and high reliability of the short transmission time interval uplink service. And the network equipment informs at least one second terminal not to transmit data on the second resource, so that the second terminal equipment is prevented from continuously occupying the second resource to cause interference and conflict between the second terminal equipment and the first terminal equipment, the first terminal equipment and the second terminal equipment share the resource, and the resource utilization rate is improved.
Optionally, as an embodiment, after the network device allocates the second resource previously allocated to the second terminal device to the first terminal device, the second terminal device may perform Discrete Fourier Transform (DFT) on the modulated modulation symbol, and then map the DFT symbol to the unoccupied third resource.
Specifically, the second terminal device may perform DFT on N modulated symbols obtained by modulation to obtain N symbols, and then map M symbols of the N symbols obtained by DFT to the third resource, where N is an integer greater than or equal to 1, and M is an integer less than N (M may be 0). For the other N-M symbols of the N symbols obtained by DFT, the second terminal device may not map the N-M symbols to a third resource, where the third resource is a resource used by the second terminal to transmit uplink traffic, and the third resource does not include an occupied second resource. It should be understood that the third resource here may be all or part of all resources originally allocated to the second terminal device except for the occupied second resource. In addition, before mapping the M symbols obtained by DFT to the third resource, the second terminal device may perform other processing, for example, precoding processing on the symbols obtained by DFT, and then map the symbols obtained by DFT to the third resource.
Specifically, as shown in fig. 7, after the second terminal device receives the puncturing notification from the network device (notifying that the second resource of the second terminal device is occupied by other terminal devices), the second terminal device may choose to perform data puncturing after DFT, i.e. keeping the number of input points of DFT unchanged, while the symbols output by DFT cannot be mapped on the resource occupied by other terminal devices, e.g. time-frequency resource. Specifically, in the process of preparing to send uplink data, the second terminal device may encode, interleave, and modulate the uplink data to obtain modulation symbols, then perform DFT on all modulation symbols to obtain DFT-processed symbols, then select a partial symbol, map the partial symbol to an unoccupied resource, and then perform Inverse Discrete Fourier Transform (IDFT) on the symbol mapped to the unoccupied resource to send the uplink data to the network device.
It should be understood that the partial symbol may be a symbol corresponding to the third resource, that is, the partial symbol is a symbol to be mapped to the third resource determined according to a mapping relationship between the symbol and the resource obtained by DFT. That is, after DFT, the terminal device may determine a part of symbols corresponding to the third resource according to the mapping relationship between the symbols obtained by DFT and the resources, and then map the part of symbols to the third resource.
The second terminal device maps the partial symbol obtained by DFT to the resource not occupied by other terminal devices, and can map the data to the third resource not occupied under the condition that the second resource is occupied by other terminal devices, thereby avoiding the influence on the transmission of the uplink data of the terminal device caused by the fact that the second resource can not map the data.
Optionally, as an embodiment, when the second terminal device performs DFT on the modulated symbols obtained by modulation, and then maps the symbols obtained by DFT to the third resource, it may perform DFT on M modulated symbols of N modulated symbols obtained by modulation to obtain M symbols, and then map the M symbols obtained by DFT to the third resource, where N is an integer greater than or equal to 1, and M is an integer less than N (M may be 0). For the other N-M modulation symbols of the N modulation symbols, the second terminal device may not perform DFT on the N-M modulation symbols of the N modulation symbols, where the N-M modulation symbols are modulation symbols corresponding to the first resource after performing DFT, the third resource is a resource used for the second terminal to transmit uplink traffic, and the third resource does not include an occupied second resource. That is, if the second resource is not occupied, when mapping data, after performing DFT-derived symbols on N-M modulation symbols, the symbols are mapped to the second resource. It should be appreciated that the DFT derived symbols may be subjected to other processing, such as precoding, before being mapped to the third resource, and then mapped to the third resource.
Specifically, as shown in fig. 8, after the second terminal device receives the puncturing notification from the network device (notifying that the first resource of the second terminal device is occupied by other terminal devices), the second terminal device may choose to perform data puncturing before DFT, that is, change the number of input points of DFT, and simultaneously, the symbols output by DFT cannot be mapped on the resource occupied by other terminal devices, such as time-frequency resource. Specifically, in the process of preparing to send uplink data, the second terminal device may encode, interleave, and modulate the uplink data to obtain modulation symbols, then select a part of the modulation symbols from all the modulation symbols to perform DFT to obtain DFT-processed symbols, then map all the DFT-obtained symbols to unoccupied resources, and then perform IDFT on the symbols mapped to the unoccupied resources to send the uplink data to the network device.
It should be understood that the partial modulation symbols may be modulation symbols corresponding to the second resource, that is, the partial modulation symbols are modulation symbols determined to be mapped to the second resource according to a mapping relationship between the modulation symbols and the resource. That is to say, before DFT, the second terminal device may determine a part of modulation symbols corresponding to the second resource according to a mapping relationship between the modulation symbols and the resources, then perform DFT on the part of modulation symbols, and map all obtained symbols to the second resource.
Optionally, the second resource may be composed of at least one time domain resource unit, and each time domain resource unit may carry certain information. For example, when the second resource is composed of at least one time domain resource unit, the time domain resource unit may include one or a combination of the following: symbol (symbol), slot, subframe (subframe). It should be understood that the time domain resource units herein may be not only various types of time intervals defined in LTE, but also time intervals defined in future 5G (i.e. New Radio Access Technology, NR for short).
Optionally, the second resource may also be composed of at least one frequency domain resource unit, and each frequency domain resource unit may carry certain information. For example, when the second resource is composed of at least one frequency domain resource unit, the frequency domain resource unit may include one or a combination of: subcarrier (subcarrier), subcarrier group, Resource Block (RB), Resource Block group.
Fig. 9 is a network device according to an embodiment of the present invention, where the network device may adopt the method provided in the corresponding embodiment of fig. 4. The network device 900 includes: a processing unit 901 and a transmitting unit 902.
A processing unit 901, configured to notify, by using the sending unit 902, a first terminal device of a first resource used by the first terminal device to send an uplink service, where the first resource includes a second resource that has been allocated to at least one second terminal device by a network device, and the second resource is used by the at least one second terminal device to send the uplink service; the sending unit 902 notifies at least one second terminal device not to send the uplink service on the second resource.
Optionally, the first resource is composed of at least one time domain resource unit, or the first resource is composed of at least one frequency domain resource unit.
Optionally, when the first resource is composed of at least one time domain resource unit, the time domain resource unit includes one or a combination of the following: symbol, slot, subframe.
Optionally, when the first resource is composed of at least one frequency domain resource unit, the frequency domain resource unit includes one or a combination of the following: subcarrier, subcarrier group, resource block group.
Optionally, when the processing unit 901 notifies at least one second terminal device not to send the uplink service on the second resource through the sending unit 902, the processing unit is specifically configured to:
the processing unit 901 sends a downlink control signaling to the at least one second terminal device through the sending unit 902, where the downlink control signaling is used to indicate that the at least one second terminal device does not send the uplink service on the second resource.
Optionally, the uplink service sent by the first terminal device is a short-delay uplink service, and the uplink service sent by the at least one second terminal device is a non-short-delay uplink service.
Optionally, the first terminal device and the second terminal device are the same terminal device, or the first terminal device and the second terminal device are different terminal devices.
It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Based on the above embodiments, the embodiment of the present invention further provides a network device, where the network device may adopt the method provided by the embodiment corresponding to fig. 4, and may be the same device as the network device shown in fig. 9. Referring to fig. 10, the network device 1000 includes: a processor 1001, a transmitter 1002, a bus 1003, and a memory 1004, wherein:
the processor 1001, the transmitter 1002, and the memory 1004 are connected to each other by a bus 1003; the bus 1003 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 10, but this is not intended to represent only one bus or type of bus.
The processor 1001 in fig. 10 corresponds to the processing unit 901 in fig. 9, and the transmitter 1002 in fig. 10 corresponds to the transmitting unit 902 in fig. 9. The terminal device 1000 further includes a memory 1004 for storing programs and the like. In particular, the program may include program code comprising computer operating instructions. The memory 1004 may include a Random Access Memory (RAM) and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The processor 1001 executes the application program stored in the memory 1004 to implement the above-described resource allocation method.
Fig. 11 is a terminal device according to an embodiment of the present invention, where the terminal device may use the method according to the embodiment of fig. 5. The terminal device 1100 includes: a receiving unit 1101 and a processing unit 1102.
A receiving unit 1101, configured to receive a notification sent by the network device, where the notification is used to instruct the terminal device not to send the uplink service on the second resource;
the second resource is a resource which is allocated to the terminal equipment by the network equipment and is used for the terminal equipment to send the uplink service;
a processing unit 1102, configured to determine, according to the notification received by the receiving unit 1101, that the terminal device 1100 does not send the uplink service on the second resource.
Optionally, the receiving unit 1101 is specifically configured to:
and receiving a downlink control signaling sent by the network equipment, wherein the downlink control signaling is used for indicating the terminal equipment not to send the uplink service on the second resource.
Optionally, the processing unit 1102 is configured to: performing DFT on the N modulated symbols obtained by modulation to obtain N symbols, wherein N is an integer greater than or equal to 1; mapping M symbols in the N symbols obtained by DFT to the third resource, where the third resource is used for the terminal device to send uplink traffic, the third resource does not include the second resource, and M is an integer smaller than N.
Optionally, the processing unit 1102 is configured to: performing DFT on M modulation symbols in the N modulation symbols obtained by modulation to obtain M symbols, wherein N is an integer greater than or equal to 1, and M is an integer smaller than N; and mapping M symbols obtained by DFT to a third resource, where the third resource is used for the terminal device to send uplink traffic, and the third resource does not include the second resource.
Optionally, the second resource is not used for carrying N-M symbols of the N symbols.
Optionally, N-M symbols of the N symbols are not mapped.
Optionally, N-M modulation symbols of the N modulation symbols are not DFT-coded.
Optionally, the second resource is composed of at least one time domain resource unit, or the second resource is composed of at least one frequency domain resource unit.
Optionally, when the second resource is composed of at least one time domain resource unit, the time domain resource unit includes one or a combination of the following: symbol, slot, subframe.
Optionally, when the second resource is composed of at least one frequency domain resource unit, the frequency domain resource unit includes one or a combination of the following: subcarrier, subcarrier group, resource block group.
Optionally, the uplink service sent by the terminal device 1100 is a non-short-delay uplink service.
Based on the above embodiments, the embodiment of the present invention further provides a terminal device, where the terminal device may adopt the method provided in the embodiment corresponding to fig. 5, and may be the same device as the terminal device shown in fig. 11. Referring to fig. 12, the terminal apparatus 1200 includes: a receiver 1201 and a processor 1202, a bus 1203, and a memory 1204, wherein:
the receiver 1201 and the processor 1202 and the memory 1204 are connected to each other through a bus 1203; the bus 1203 may be a PCI bus or EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 12, but this is not intended to represent only one bus or type of bus.
Based on the foregoing embodiments, an embodiment of the present invention provides a wireless communication system, which is used to implement the above resource allocation method. Referring to fig. 13, the wireless communication system 1300 includes: network device 1301, first terminal device 1302, and at least one second terminal device 1303. Wherein the content of the first and second substances,
a first terminal device 1302, configured to receive a notification sent by the network device 1301 and used to instruct the first terminal device 1302 to send a first resource of an uplink service;
and the at least one second terminal device 1303, configured to receive a notification sent by the network device 1301 and used to instruct the at least one second terminal device 1303 not to send the uplink service on the second resource.
Optionally, the first terminal device 1302 is further configured to:
and sending the uplink service on the first resource according to the received notification sent by the network device 1301.
Optionally, the at least one second terminal device 1303 is further configured to:
and determining not to send the uplink service on the second resource according to the received notification sent by the network device 1301.
Optionally, the uplink service sent by the first terminal device 1302 is a short-delay uplink service, and the uplink service sent by the at least one second terminal device 1303 is a non-short-delay uplink service.
Optionally, the first resource is composed of at least one time domain resource unit, or the first resource is composed of at least one frequency domain resource unit.
Optionally, when the first resource is composed of at least one time domain resource unit, the time domain resource unit includes one or a combination of the following: symbol, slot, subframe.
Optionally, when the first resource is composed of at least one frequency domain resource unit, the frequency domain resource unit includes one or a combination of the following: subcarrier, subcarrier group, resource block group.
Optionally, when the network device 1301 notifies at least one second terminal device 1303 not to send the uplink service on the second resource, the method is specifically configured to:
and sending a downlink control signaling to the at least one second terminal device 1303, where the downlink control signaling is used to indicate that the at least one second terminal device 1303 does not send the uplink service on the second resource.
Optionally, the uplink service sent by the first terminal device 1302 is a short-delay uplink service, and the uplink service sent by the at least one second terminal device 1103 is a non-short-delay uplink service.
Optionally, the first terminal device 1302 and the second terminal device 1303 are the same terminal device, or the first terminal device 1302 and the second terminal device 1303 are different terminal devices.
In the technical solution provided in the embodiment of the present invention, after preempting the second resource allocated to at least one second terminal device by the network device, the second resource is allocated to the first terminal device as the first resource, so that the network device can allocate the resource for the first terminal device to send the short transmission time interval uplink service in time, thereby ensuring the requirements of low latency and high reliability of the short transmission time interval uplink service. And the network equipment informs at least one second terminal not to transmit data on the second resource, so that the second terminal equipment is prevented from continuously occupying the second resource to cause interference and conflict between the second terminal equipment and the first terminal equipment, the first terminal equipment and the second terminal equipment share the resource, and the resource utilization rate is improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the 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 (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (31)
1. A method for resource allocation, comprising:
a network device informs a first terminal device of a first resource used for the first terminal device to send an uplink service, wherein the first resource comprises a second resource which is allocated to at least one second terminal device by the network device and is used for the at least one second terminal device to send the uplink service, the uplink service sent by the first terminal device is a short-delay uplink service, the uplink service sent by the at least one second terminal device is a non-short-delay uplink service, and the network device does not reserve a resource for the short-delay uplink service;
and the network equipment informs the at least one second terminal equipment not to send the uplink service on the second resource.
2. The method of claim 1, wherein the first resource consists of at least one time domain resource unit or the first resource consists of at least one frequency domain resource unit.
3. The method of claim 2, wherein when the first resource consists of at least one time domain resource unit, the time domain resource unit comprises one or a combination of: symbol, slot, subframe.
4. The method of claim 2, wherein when the first resource consists of at least one frequency domain resource unit, the frequency domain resource unit comprises one or a combination of: subcarrier, subcarrier group, resource block group.
5. The method of any of claims 1-4, wherein the network device informing the at least one second terminal device not to send uplink traffic on the second resource comprises:
and the network equipment sends a downlink control signaling to the at least one second terminal equipment, wherein the downlink control signaling is used for indicating the at least one second terminal equipment not to send the uplink service on the second resource.
6. The method of claim 1, wherein the first terminal device and the second terminal device are the same terminal device or the first terminal device and the second terminal device are different terminal devices.
7. A method for resource allocation, comprising:
the second terminal equipment receives a notification which is sent by the network equipment and used for indicating the second terminal equipment not to send the uplink service on the second resource;
the second resource is a resource which has been allocated to the second terminal device by the network device and is used for the second terminal device to send uplink service;
and the second terminal device determines not to send the uplink service on the second resource, wherein the second resource is allocated to the first terminal device by the network device for the first terminal device to send the uplink service, the uplink service sent by the first terminal device is a short-delay uplink service, the uplink service sent by the second terminal device is a non-short-delay uplink service, and the network device does not reserve resources for the short-delay uplink service.
8. The method of claim 7, wherein the second terminal device receiving a notification sent by a network device to instruct the second terminal device not to send uplink traffic on the second resource, comprises:
and the second terminal equipment receives a downlink control signaling sent by the network equipment, wherein the downlink control signaling is used for indicating that the second terminal equipment does not send uplink service on the second resource.
9. The method of claim 7 or 8, wherein the method further comprises:
the second terminal equipment performs Discrete Fourier Transform (DFT) on the N modulated symbols obtained by modulation to obtain N symbols, wherein N is an integer greater than or equal to 1;
and the second terminal equipment maps M symbols in the N symbols obtained by DFT to a third resource, wherein the third resource is used for the second terminal equipment to send uplink service, the third resource does not include the second resource, and M is an integer smaller than N.
10. The method of claim 7 or 8, wherein the method further comprises:
the second terminal device performs Discrete Fourier Transform (DFT) on M modulation symbols in the N modulation symbols obtained by modulation to obtain M symbols, wherein N is an integer greater than or equal to 1, and M is an integer smaller than N;
and the second terminal equipment maps the M symbols obtained by DFT to a third resource, wherein the third resource is used for the second terminal equipment to send uplink service, and the third resource does not include the second resource.
11. The method of claim 9, wherein the second resource is not used to carry N-M of the N symbols and N-M of the N symbols are not mapped.
12. The method of claim 10, wherein N-M of the N modulation symbols are not DFT-coded.
13. The method as recited in claim 7, wherein said second resource consists of at least one time domain resource unit or said second resource consists of at least one frequency domain resource unit.
14. The method of claim 13, wherein when the second resource is composed of at least one time domain resource unit, the time domain resource unit comprises one or a combination of: symbol, slot, subframe.
15. The method of claim 13, wherein when the second resource consists of at least one frequency domain resource unit, the frequency domain resource unit comprises one or a combination of: subcarrier, subcarrier group, resource block group.
16. The method of claim 7, wherein the first terminal device and the second terminal device are the same terminal device or the first terminal device and the second terminal device are different terminal devices.
17. A network device comprising a processing unit and a transmitting unit, wherein:
the processing unit is configured to notify, by the sending unit, a first terminal device of a first resource used by the first terminal device to send an uplink service, where the first resource includes a second resource that has been allocated to at least one second terminal device by the network device, and the second resource is used by the at least one second terminal device to send the uplink service, where the uplink service sent by the first terminal device is a short-delay uplink service, the uplink service sent by the at least one second terminal device is a non-short-delay uplink service, and the network device does not reserve a resource for the short-delay uplink service; and informing the at least one second terminal device not to send the uplink service on the second resource through the sending unit.
18. The network device of claim 17, wherein the first resource consists of at least one time domain resource unit or the first resource consists of at least one frequency domain resource unit.
19. The network device of claim 18, wherein when the first resource consists of at least one time domain resource unit, the time domain resource unit comprises one or a combination of: symbol, slot, subframe.
20. The network device of claim 18, wherein when the first resource consists of at least one frequency domain resource unit, the frequency domain resource unit comprises one or a combination of: subcarrier, subcarrier group, resource block group.
21. The network device of claim 17, wherein the processing unit, when notifying, through the sending unit, the at least one second terminal device that the uplink service is not sent on the second resource, is specifically configured to:
and the processing unit sends a downlink control signaling to the at least one second terminal device through the sending unit, where the downlink control signaling is used to indicate that the at least one second terminal device does not send an uplink service on the second resource.
22. The network device of any of claims 17-21, wherein the first terminal device and the second terminal device are the same terminal device or the first terminal device and the second terminal device are different terminal devices.
23. A terminal device, comprising:
a receiving unit, configured to receive a notification sent by a network device, where the notification is used to instruct the terminal device not to send an uplink service on a second resource;
the second resource is a resource which has been allocated to the terminal device by the network device and is used for the terminal device to send uplink service;
and a processing unit, configured to determine, according to the notification received by the receiving unit, that the terminal device does not send an uplink service on the second resource, where the second resource is allocated to the first terminal device by the network device for the first terminal device, the uplink service sent by the first terminal device is a short-delay uplink service, the uplink service sent by the second terminal device is a non-short-delay uplink service, and the network device does not reserve a resource for the short-delay uplink service.
24. The terminal device of claim 23, wherein the receiving unit is specifically configured to:
and receiving a downlink control signaling sent by the network equipment, wherein the downlink control signaling is used for indicating that the terminal equipment does not send an uplink service on the second resource.
25. The terminal device of claim 23 or 24, wherein the processing unit is configured to:
performing Discrete Fourier Transform (DFT) on N modulated symbols obtained by modulation to obtain N symbols, wherein N is an integer greater than or equal to 1;
mapping M symbols in the N symbols obtained by DFT to a third resource, where the third resource is used for the terminal device to send uplink traffic, the third resource does not include the second resource, and M is an integer smaller than N.
26. The terminal device of claim 23 or 24, wherein the processing unit is configured to:
performing Discrete Fourier Transform (DFT) on M modulation symbols in the N modulation symbols obtained by modulation to obtain M symbols, wherein N is an integer greater than or equal to 1, and M is an integer smaller than N;
and mapping M symbols obtained by DFT to a third resource, where the third resource is used for the terminal device to send uplink traffic, and the third resource does not include the second resource.
27. The terminal device of claim 25, wherein the second resource is not used to carry N-M of the N symbols and N-M of the N symbols are not mapped.
28. The terminal device of claim 26, wherein N-M of the N modulation symbols are not DFT-coded.
29. The terminal device of claim 23, wherein the second resource consists of at least one time domain resource unit or the second resource consists of at least one frequency domain resource unit.
30. The terminal device of claim 29, wherein when the second resource consists of at least one time domain resource unit, the time domain resource unit comprises one or a combination of: symbol, slot, subframe.
31. The terminal device of claim 29, wherein when the second resource consists of at least one frequency domain resource unit, the frequency domain resource unit comprises one or a combination of: subcarrier, subcarrier group, resource block group.
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| PCT/CN2017/088542 WO2017215642A1 (en) | 2016-06-16 | 2017-06-16 | Resource allocation method, network apparatus, and terminal apparatus |
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| CN109756317B (en) * | 2017-11-07 | 2022-02-18 | 华为技术有限公司 | Interference determination method and network equipment |
| CN109803414B (en) * | 2017-11-17 | 2021-10-26 | 华为技术有限公司 | Resource allocation method and device |
| CN110167149A (en) * | 2018-02-12 | 2019-08-23 | 华为技术有限公司 | A kind of method, apparatus and system sending and receiving upstream data |
| CN110149716B (en) * | 2018-02-14 | 2023-12-15 | 华为技术有限公司 | Communication method and communication device |
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