WO2019227354A1

WO2019227354A1 - Methods, devices and computer readable medium for configuring resource pools

Info

Publication number: WO2019227354A1
Application number: PCT/CN2018/089070
Authority: WO
Inventors: Dong Li
Original assignee: Nokia Shanghai Bell Co., Ltd.; Nokia Solutions And Networks Oy; Nokia Technologies Oy
Priority date: 2018-05-30
Filing date: 2018-05-30
Publication date: 2019-12-05
Also published as: CN112205048B; CN112205048A

Abstract

Embodiments of the disclosure provide a method, device and computer readable medium for configuring resource pools. According to embodiments of the present disclosure, the network side configures different resource pools with different numerologies for device-to-device communications. The network side may also configure conditions for selecting the suitable resource pool. According to embodiments of the present disclosure, the terminal device can choose the proper resource pool based on its speed. Embodiments of the present disclosure can select proper resource pool based on different situations, thereby improving performance of communications.

Description

METHODS, DEVICES AND COMPUTER READABLE MEDIUM FOR CONFIGURING RESOURCE POOLS

FIELD

Embodiments of the present disclosure generally relate to communication techniques, and more particularly, to methods, devices and computer readable medium for configuring resource pools for terminal device communications with other terminal devices and/or a network device.

BACKGROUND

In communication systems, such as Long Term Evolved (LTE) communication systems, the resource pools for device-to-device communications are usually configured or preconfigured with the same numerology and TTI length. However, in some situations, if the terminal devices have relatively strict requirements on reliability and latency, the conventional resource pools are not able to achieve the required performance.

SUMMARY

Generally, embodiments of the present disclosure relate to a method for configuring resource pools and the corresponding network device and terminal device.

In a first aspect, embodiments of the present disclosure provide a communication method. The method comprises: determining, at a network device, configurations of a first resource pool and a second resource pool. A first subcarrier spacing of the first resource pool is different from a second subcarrier spacing of the second resource pool. The method also comprises determining selection criteria for the first and the second resource pools. The selection criteria are associated with a communication condition of a set of terminal devices. The method further comprises transmitting the configurations and the selection criteria to the set of terminal devices, such that a target resource pool is selected from the first resource pool and the second resource pool based at least in part on the selection criteria. The target resource pool is used for communicating under the communication condition.

In a second aspect, embodiments of the present disclosure provide a communication method. The method comprises: receiving, at a terminal device, configurations of a first resource pool and a second resource pool. A first subcarrier spacing of the first resource pool is different from a second subcarrier spacing of the second resource pool. The method also comprises receiving selection criteria for the first and the second resource pools. The selection criteria are associated with a communication condition of the terminal device. The method further comprises selecting a target resource pool from the first and the second resource pools based at least in part on the selection criteria. The target resource pool is used for communicating under the communication condition.

In a third aspect, embodiments of the disclosure provide a network device. The network device comprises: at least on processor; and a memory coupled to the at least one processor, the memory storing instructions therein, the instructions, when executed by the at least one processor, causing the network device to perform acts including: determining, at a network device, configurations of a first resource pool and a second resource pool. A first subcarrier spacing of the first resource pool is different from a second subcarrier spacing of the second resource pool. The acts also comprise determining selection criteria for the first and the second resource pools. The selection criteria are associated with a communication condition of a set of terminal devices. The acts further comprise transmitting the configurations and the selection criteria to the set of terminal devices, such that a target resource pool is selected from the first resource pool and the second resource pool based at least in part on the selection criteria. The target resource pool is used for communicating under the communication condition.

In a fourth aspect, embodiments of the disclosure provide a terminal device. The terminal device comprises: at least on processor; and a memory coupled to the at least one processor, the memory storing instructions therein, the instructions, when executed by the at least one processor, causing the terminal device to perform acts including: receiving configurations of a first resource pool and a second resource pool. A first subcarrier spacing of the first resource pool is different from a second subcarrier spacing of the second resource pool. The acts also comprise receiving selection criteria for the first and the second resource pools. The selection criteria are associated with a communication condition of a set of terminal devices. The acts further comprise selecting a target resource pool from the first and the second resource pools based at least in part on the selection criteria. The target resource pool is used for communicating under the communication condition.

In a fifth aspect, embodiments of the disclosure provide an apparatus for communication. The apparatus comprises means for performing the method according to the first aspect.

In a sixth aspect, embodiments of the disclosure provide an apparatus for communication. The apparatus comprises means for performing the method according to the second aspect.

In a seventh aspect, embodiments of the disclosure provide a computer readable medium. The computer readable medium stores instructions thereon, the instructions, when executed by at least one processing unit of a machine, causing the machine to implement the method according to the first aspect.

In an eighth aspect, embodiments of the disclosure provide a computer readable medium. The computer readable medium stores instructions thereon, the instructions, when executed by at least one processing unit of a machine, causing the machine to implement the method according to the second aspect.

Other features and advantages of the embodiments of the present disclosure will also be apparent from the following description of specific embodiments when read in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of embodiments of the disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the disclosure are presented in the sense of examples and their advantages are explained in greater detail below, with reference to the accompanying drawings, where

Fig. 1 illustrates a schematic diagram of a communication system according to embodiments of the present disclosure;

Fig. 2 illustrates a flow chart of a method implemented at a network device according to embodiments of the present disclosure;

Figs. 3A-3D illustrate schematic diagrams of configurations of resource pools according to embodiments of the present disclosure;

Fig. 4 illustrates a flow chart of a method implemented at a terminal device according to embodiments of the present disclosure; and

Fig. 5 illustrates a schematic diagram of a device according to embodiments of the present disclosure.

Throughout the figures, same or similar reference numbers indicate same or similar elements.

DETAILED DESCRIPTION OF EMBODIMENTS

The subject matter described herein will now be discussed with reference to several example embodiments. It should be understood these embodiments are discussed only for the purpose of enabling those skilled persons in the art to better understand and thus implement the subject matter described herein, rather than suggesting any limitations on the scope of the subject matter.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a, ” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises, ” “comprising, ” “includes” and/or “including, ” when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.

It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two functions or acts shown in succession may in fact be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.

As used herein, the term “communication network” refers to a network following any suitable communication standards, such as Long Term Evolution (LTE) , LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , and so on. Furthermore, the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the future fifth generation (5G) communication protocols, and/or any other protocols either currently known or to be developed in the future.

As used herein, the term “numerology” refers to a set of parameters. The parameters include, for example, but not limited to, a subcarrier spacing (SCS) , a symbol length, a length of a cyclic prefix (CP) and the like.

As used herein, the term “resource pool” refers a set of time-frequency resources that are used for communications.

Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will of course also be future type communication technologies and systems with which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned system. For the purpose of illustrations, embodiments of the present disclosure will be described with reference to the scenario of vehicle-to-everything (V2X) communications in 5G communication system. It should be noted that embodiments of the present disclosure may be implemented in any suitable scenarios where low latency and/or high reliability are required.

The term “network device” includes, but not limited to, a base station (BS) , a gateway, a management entity, and other suitable device in a communication system. The term “base station” or “BS” represents a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, a low power node such as a femto, a pico, and so forth.

The term “terminal device” includes, but not limited to, “user equipment (UE) ” and other suitable end device capable of communicating with the network device. By way of example, the “terminal device” may refer to a terminal, a Mobile Terminal (MT) , a Subscriber Station (SS) , a Portable Subscriber Station, a Mobile Station (MS) , or an Access Terminal (AT) .

The term “circuitry” used herein may refer to one or more or all of the following:

(a) hardware-only circuit implementations (such as implementations in only analog and/or digital circuitry) and

(b) combinations of hardware circuits and software, such as (as applicable) :

(i) a combination of analog and/or digital hardware circuit (s) with

software/firmware and

(ii) any portions of hardware processor (s) with software (including digital signal processor (s) ) , software, and memory (ies) that work together to cause an apparatus, such as a mobile phone or server, to perform various functions) and

(c) hardware circuit (s) and or processor (s) , such as a microprocessor (s) or a portion of a microprocessor (s) , that requires software (e.g., firmware) for operation, but the software may not be present when it is not needed for operation. ”

This definition of circuitry applies to all uses of this term in this application, including in any claims. As a further example, as used in this application, the term circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and/or firmware. The term circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.

As described above, embodiments of the present disclosure is described with reference to the scenario of V2X communications network in 5G communication system. In 3GPP 5G communication system, V2X is playing an important role in automated driving with greatly improved efficiency and safety. Since the speed of vehicles may be relatively high, it often requires very good performance in terms of latency and reliability.

In conventional technologies, the resource pools are often configured by the network and the resource pools have the same numerology. In particular, in LTE the V2X transmission time interval (TTI) is fixed to 1ms which includes 14 single-carrier frequency-division multiple access (SC-FDMA) symbols or 14 orthogonal frequency-division multiplexing symbols. The subcarrier spacing is fixed to 15kHz. Since the configurations of the resource pool parameters are fixed, the performance may not be satisfying if the vehicles move at relatively high speed.

In order to at least in part solve above and other potential problems, embodiments of the present disclosure provide solutions for configuring resource pools. According to embodiments of the present disclosure, the network side configures different resource pools with different numerologies for device-to-device communications. The network side may also configure conditions for selecting the suitable resource pool. According to embodiments of the present disclosure, the terminal device can choose the proper resource pool based on its speed. Embodiments of the present disclosure can select proper resource pool based on different situations, thereby improving performance of communications.

Now some example embodiments of the present disclosure are described below with reference to the figures. However, those skilled in the art would readily appreciate that the detailed description given herein with respect to these figures is for explanatory purpose as the present disclosure extends beyond theses limited embodiments.

Fig. 1 illustrates a schematic diagram of a communication system in which embodiments of the present disclosure can be implemented. The communication system 100, which is a part of a communication network, includes a network device 120, and one or more terminal devices 110-1 and 110-2. It is to be understood that the communication system 100 may include any suitable number of terminal devices.. It should be noted that the communication system 100 may also include other elements which are omitted for the purpose of clarity. The network device 120 may communicate with the terminal devices 110. It is to be understood that the number of network devices and terminal devices shown in Fig. 1 is given for the purpose of illustration without suggesting any limitations. The communication system 100 may include any suitable number of network devices and terminal devices.

Communications in the communication system 100 may be implemented according to any proper communication protocol (s) , including, but not limited to, cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future. Moreover, the communication may utilize any proper wireless communication technology, including but not limited to: Code Divided Multiple Address (CDMA) , Frequency Divided Multiple Address (FDMA) , Time Divided Multiple Address (TDMA) , Frequency Divided Duplexer (FDD) , Time Divided Duplexer (TDD) , Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Divided Multiple Access (OFDMA) and/or any other technologies currently known or to be developed in the future.

Fig. 2 illustrates a flowchart of method 200 in accordance with embodiments of the present disclosure. The method 200 may be implemented at the network device 120.

At block 210, the network device 120 determines configurations of a resource pool and a further resource pool. The SCS of the resource pool is different from the further resource pool. Figs. 3A-3D illustrate schematic diagrams of configurations of resource pools according to embodiments of the present disclosure. Embodiments are described with reference to Figs. 3A-3D. It should be noted that the number of resource pools shown in Figs. 3A-3D are only for the purpose of illustrations and the values of SCS of the resource pools shown in Figs. 3A-3D are also only for the purpose of illustrations.

As shown in Fig. 3A, in some embodiments, the network device 120 determines configurations of a resource pool 310, a resource pool 320 and a resource pool 330. The resource pools 310, 320 and 330 may have different SCSs. For example, the resource pool 310 may have a SCS of 15 kHz, the resource pool 320 may have a SCS of 30 kHz and the resource pool 330 may have a SCS of 60 kHz. Only for the purpose of illustrations, one TTI includes 14 OFDM symbols. In this example shown in Fig. 3A, there are 9 data symbols 3010, 4 demodulation reference signal (DMRS) symbols and one guard time symbol 3030 within on TTI. The resource pool 310 has a TTI of 1ms, the resource pool 320 has a TTI of 0.5ms and the resource pool 330 has a TTI of 0.25ms. In this way, the resource pool 330 which has the TTI of 0.25ms can support communications with high mobility.

In an example embodiment, the network device 120 may determine a slot bundling factor of a resource pool. For example, as shown in Fig. 3B, the network device 120 may determine that the slot bundling factor of the resource pool 340 is 2, which means that there are two slots in one TTI. The slot bundling factor may indicate the number of bundling slots in one TTI. The resource pool 340 has a SCS of 60 kHz and the slot duration of the resource pool 340 is 0.25ms. Thus with slot bundling factor 2, the TTI duration is 0.5ms. In this way, resource overhead for guard time is reduced. For a given traffic packet size, the transmission bandwidth is reduced. Further, the support for communications with high mobility may be improved since more DMRS symbols are available for channel interpolation in time.

The resource pools shown in Figs. 3A and 3B are configured over the same carrier frequency 3100. In a further embodiment, the network device 120 may determine that the resource pools are configured over different carrier frequencies. For example, as shown in Fig. 3C, the resource pool 350 and the resource pool 355 are configured over the carrier frequency 3100 and the resource pool 360 and the resource pool 365 are configured over the carrier frequency 3200. The resource pool 350 may have a SCS of 15 kHz, the resource pool 355 may have a SCS of 30 kHz and the resource pools 360 and 365 may have a SCS of 60 kHz. The slot bundling factors for the resource pools 350, 355 and 360 are one and the slot bundling factor for the resource pool 365 is two.

In another embodiment, as shown in Fig. 3D, the network device 120 may configure resource pools over different carrier bandwidth parts within one carrier bandwidth. For example, the network device 120 may divide the bandwidth of a carrier into different carrier bandwidth parts. As shown in Fig. 3D, the network device 120 divide the bandwidth of carrier frequency 3300 into three parts 3300-1, 3300-2 and 3300-3. The resource pool 370 is configured over the carrier bandwidth part 3300-1, the resource pool 375 is configured over the carrier bandwidth part 3300-2 and the resource pools 380 and 385 are configured over the carrier bandwidth part 3300-3. The resource pool 370 may have a SCS of 15 kHz, the resource pool 375 may have a SCS of 30 kHz and the resource pools 380 and 385 may have a SCS of 60 kHz. The slot bundling factors for the resource pools 370, 375 and 380 are one and the slot bundling factor for the resource pool 385 is two.

In this way, each part of the carrier bandwidth may contain one or more resource pools with the same numerology. The numerology of the resource pool may be implicitly known by the terminal device according to the configuration information of the corresponding carrier bandwidth part which is transmitted by the network device. It should be noted that the numbers, values of the configurations shown in Figs. 3A-3D are only examples.

Now referring back to Fig. 2, at block 220, the terminal device 120 determines selection criteria for the resource pools. The selection criteria are associated with a communication condition of a set of terminal devices. For example, in some embodiments, the network device 120 may determine the selection criteria based on the mobility speeds of a set of terminal devices which may communicate with each other. The selection criteria may include different threshold speeds which apply to the different resource pools.

For example, with reference to Fig. 3A, the network device 120 may determine the selection criteria that if the mobility speed of the terminal device 110 is less than a first threshold speed, the terminal device 110 needs to select the resource pool 310; if the speed of the terminal device 110 is greater than the first threshold speed but less than a second threshold speed, the terminal device 110 needs to select the resource pool 320; and if the speed of the terminal device is greater than the second threshold speed, the terminal device 110 needs to select the resource pool 330.

In other embodiments, since different types of traffics have different requirements on latencies, the network device 120 may determine the selection criteria based on the latency requirement of the communication traffic of the terminal devices. For example, still with reference to Fig. 3A, the network device 120 may determine the selection criteria that if the required latency of the terminal device 110 is greater than a first threshold latency, the terminal device 110 needs to select the resource pool 310; if the required latency of the terminal device 110 is equal to or less than the first threshold latency but greater than a second threshold latency, the terminal device 110 needs to select the resource pool 320; and if the required latency of the terminal device is equal to or less than the second threshold latency, the terminal device 110 needs to select the resource pool 330.

At block 330, the network device 120 transmits the configurations and the selection criteria to a set of terminal devices 110. In some embodiments, the network device 120 may transmit the configurations and/or the selection criteria via a common high layer signaling. In other embodiments, the network device 120 may transmit the configurations and/or the selection criteria via a dedicated high layer signaling. In a further embodiment, the configurations and the selection criteria may be preconfigured to the terminal devices 110.

Fig. 4 illustrates a flowchart of method 400 in accordance with embodiments of the present disclosure. The method 400 may be implemented at the terminal device 110.

At block 410, the terminal device 110 receives configurations of a resource pool and a further resource pool. In an embodiment, the terminal device 110 may receive the configurations via a common high layer signaling. In another embodiment, the terminal device 110 may receive the configurations via a dedicated high layer signaling.

As described above, Figs. 3A-3D illustrate schematic diagrams of configurations of resource pools according to embodiments of the present disclosure. The received configurations may indicate numerologies of the resource pools. For example, the configurations indicate that SCSs and/or TTIs of the resource pools.

In an example embodiment, the configurations may indicate the resource pools are configured over the same carrier frequency. For example, the configurations of the resource pools 310, 320 and 330 indicate that these resource pools are all configured over the carrier frequency 3100.

In another embodiment, the configurations may indicate that the resource pools are configured over different carrier frequency. For example, the configurations of the resource pools 350, 355, 360 and 365 indicate that the resource pools 350 and 355 are configured over the carrier frequency 3100 and the resource pools 360 and 365 are configured over the carrier frequency 3200.

In some embodiments, the configurations may indicate the slot bundling factor for the TTI of the resource pools. For example, the configuration of the resource pool 340 may indicate the slot bundling factor is two and the configurations of the

resource pool

310 and 320 may indicate the slot bundling factor is one.

As described above, the network device 120 may divide the bandwidth of a carrier into different carrier bandwidth parts and each carrier bandwidth part may contain one or more resource pools with the same numerology. The numerology of the resource pool (s) could be implicitly known by the terminal device according to the configuration information of the corresponding carrier bandwidth part which is transmitted by the network device.

At block 420, the terminal device 110 receives selection criteria for the resource pools. In an embodiment, the terminal device 110 may receive the selection criteria via a common high layer signaling. In another embodiment, the terminal device 110 may receive the selection criteria via a dedicated high layer signaling.

In some embodiments, the selection criteria may indicate a threshold mobility speed of the terminal devices. The selection criteria may include the corresponding relationship between the threshold speed and the resource pools.

In other embodiments, the selection criteria may indicate threshold latency. The selection criteria may include the corresponding relationship between the threshold latency and the resource pools.

At block 430, the terminal device 110 selects a target resource pool from the resource pools based at least in part on the selection criteria. For example, with the reference to Fig. 3A, the selection criteria may indicate that: if the mobility speed of the terminal device 110 is less than a first threshold speed, the terminal device 110 may select the resource pool 310; if the speed of the terminal device 110 is greater than the first threshold speed but less than a second threshold speed, the terminal device 110 may select the resource pool 320; and if the speed of the terminal device is greater than the second threshold speed, the terminal device 110 may select the resource pool 330.

In this embodiment, the terminal device 110 may determine the resource pool based on its mobility speed and the selection criteria. For example, if the terminal device 110 determines that its current speed is greater than the second threshold speed, the terminal device 110 may select the resource pool 330 for communicating. If the terminal device 110 determines that its current speed is slower than the first threshold speed, the terminal device 110 may select the resource pool 310 for communicating. If the terminal device 110 determines that its current speed is between the first and second threshold speeds, the terminal device 1 l0 may select the resource pool 320 for communicating. In this way, the terminal device with high mobility may select a proper resource pool to improve the performance.

As described above, the selection criteria may indicate corresponding relationship between the threshold latency and the resource pools. The terminal device 110 may select the resource pool based on its latency requirement of the transmitted traffic. The terminal device 110 may communicate with other terminal devices using the target resource pool. In other embodiments, the terminal device may communicate with the network device 120 using the target resource pool.

In some embodiments, an apparatus for performing the method 200 (for example, the network device 120) may comprise respective means for performing the corresponding steps in the method 200. These means may be implemented in any suitable manners. For example, it can be implemented by circuitry or software modules.

In some embodiments, the apparatus comprises: means for determining, at a network device, configurations of a first resource pool and a second resource pool, a first subcarrier spacing of the first resource pool being different from a second subcarrier spacing of the second resource pool; means for determining selection criteria for the first and the second resource pools, the selection criteria associated with a communication condition of a set of terminal devices; and means for transmitting the configurations and the selection criteria to the set of terminal devices, such that a target resource pool is selected from the first resource pool and the second resource pool based at least in part on the selection criteria, the target resource pool being used for communicating under the communication condition.

In some embodiments, the means for determining the configurations of the first and the second resource pools comprises: means for determining the first and the second resource pools being configured over a same carrier frequency.

In some embodiments, the means for determining the configurations of the first and the second resource pools comprises: means for determining the first and the second resource pools being configured over different carrier frequencies.

In some embodiments, the means for determining the configuration of the first resource pool comprises: means for determining a slot bundling factor of the TTI for the first resource pool, the slot bundling factor indicating the number of bundling slots within the TTI of the first resource pool.

In some embodiments, the means for determining the selection criteria comprises: means for determining the selection criteria based on mobility speeds of the set of terminal devices.

In some embodiments, the means for determining the selection criteria comprises: means for determining the selection criteria based on latency requirement of the traffic transmitted by the terminal devices.

In some embodiments, an apparatus for performing the method 400 (for example, the terminal device 110) may comprise respective means for performing the corresponding steps in the method 400. These means may be implemented in any suitable manners. For example, it can be implemented by circuitry or software modules.

In some embodiments, the apparatus comprises: means for receiving configurations of a first resource pool and a second resource pool from a network device, a first subcarrier spacing of the first resource pool being different from a second subcarrier spacing of the second resource pool; means for receiving selection criteria for the first and the second resource pools, the selection criteria associated with a communication condition of the terminal device; and means for selecting a target resource pool from the first and the second resource pools based at least in part on the selection criteria, the target resource pool being used for communicating under the communication condition.

In some embodiments, the means for receiving the configurations of the first and the second resource pools comprises: means for receiving the configurations indicating that the first and the second resource pools being configured over a same carrier frequency.

In some embodiments, the means for receiving the configurations of the first and the second resource pools comprises: means for receiving the configurations indicating that the first and the second resource pools being configured over different carrier frequencies.

In some embodiments, the means for receiving the configuration of the first resource pool comprises: means for receiving a slot bundling factor of the TTI for the first resource pool, the slot bundling factor indicating the number of bundling slots within the TTI for the first resource pool.

In some embodiments, the means for selecting a target resource pool comprises: means for receiving the selection criteria indicating a threshold speed; and means for in response to a speed of the terminal device exceeding the threshold speed and the first subcarrier spacing being greater than the second subcarrier spacing, selecting the first resource pool as the target resource pool.

In some embodiments, the means for selecting a desired resource pool comprises: means for receiving the selection criteria indicating threshold latency; and means for in response to a latency requirement by a traffic transmitted by the terminal device exceeding the threshold latency the first subcarrier spacing being greater than the second subcarrier spacing, selecting the second resource pool as the target resource pool.

In some embodiment, the apparatus further comprises means for communicating with the network device using the target resource pool.

In some embodiments, the apparatus further comprises means for communicating with a further terminal device using the target resource pool.

Fig. 5 is a simplified block diagram of a device 500 that is suitable for implementing embodiments of the present disclosure. The device 500 may be implemented at the network device 120. The device 500 may also be implemented at the terminal device 110. As shown, the device 500 includes one or more processors 510, one or more memories 520 coupled to the processor (s) 510, one or more transmitters and/or receivers (TX/RX) 540 coupled to the processor 510.

The processor 510 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples. The device 500 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.

The memory 520 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples.

The memory 520 stores at least a part of a program 530. The TX/RX 540 is for bidirectional communications. The TX/RX 540 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones. The communication interface may represent any interface that is necessary for communication with other network elements.

The program 530 is assumed to include program instructions that, when executed by the associated processor 510, enable the device 500 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to Figs. 2-4. That is, embodiments of the present disclosure can be implemented by computer software executable by the processor 510 of the device 500, or by hardware, or by a combination of software and hardware.

While this specification contains many specific implementation details, these should not be construed as limitations on the scope of any disclosure or of what may be claimed, but rather as descriptions of features that may be specific to particular embodiments of particular disclosures. Certain features that are described in this specification in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable sub-combination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a sub-combination or variation of a sub-combination.

Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Moreover, the separation of various system components in the embodiments described above should not be understood as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products.

Various modifications, adaptations to the foregoing exemplary embodiments of this disclosure may become apparent to those skilled in the relevant arts in view of the foregoing description, when read in conjunction with the accompanying drawings. Any and all modifications will still fall within the scope of the non-limiting and exemplary embodiments of this disclosure. Furthermore, other embodiments of the disclosures set forth herein will come to mind to one skilled in the art to which these embodiments of the disclosure pertain having the benefit of the teachings presented in the foregoing descriptions and the associated drawings.

Therefore, it is to be understood that the embodiments of the disclosure are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are used herein, they are used in a generic and descriptive sense only and not for purpose of limitation.

Claims

A method for communication, comprising:

determining, at a network device, configurations of a first resource pool and a second resource pool, a first subcarrier spacing of the first resource pool being different from a second subcarrier spacing of the second resource pool;

determining selection criteria for the first and the second resource pools, the selection criteria associated with a communication condition of a set of terminal devices; and

transmitting the configurations and the selection criteria to the set of terminal devices, such that a target resource pool is selected from the first resource pool and the second resource pool based at least in part on the selection criteria, the target resource pool being used for communicating under the communication condition.
The method of claim 1, wherein determining the configurations of the first and the second resource pools comprises:

determining the first and the second resource pools being configured over a same carrier frequency.
The method of claim 1, wherein determining the configurations of the first and the second resource pools comprises:

determining the first and the second resource pools being configured over different carrier frequencies.
The method of claim 1, wherein determining the configuration of the first resource pool comprises:

determining a slot bundling factor of a transmission time interval (TTI) for the first resource pool, the slot bundling factor indicating the number of bundling slots within the TTI.
The method of claim 1, wherein determining the selection criteria comprises:

determining the selection criteria based on mobility speeds of the set of terminal devices.
The method of claim 1, wherein determining the selection criteria comprises:

determining the selection criteria based on latency requirement of a traffic transmitted by at least one terminal device in the set of terminal devices.
A method for communication, comprising:

receiving, at a terminal device, configurations of a first resource pool and a second resource pool from a network device, a first subcarrier spacing of the first resource pool being different from a second subcarrier spacing of the second resource pool;

receiving selection criteria for the first and the second resource pools, the selection criteria associated with a communication condition of the terminal device; and

selecting a target resource pool from the first and the second resource pools based at least in part on the selection criteria, the target resource pool being used for communicating under the communication condition.
The method of claim 7, wherein receiving the configurations of the first and the second resource pools comprises:

receiving the configurations indicating that the first and the second resource pools being configured over a same carrier frequency.
The method of claim 7, wherein receiving the configurations of the first and the second resource pools comprises:

receiving the configurations indicating that the first and the second resource pools being configured over different carrier frequencies.
The method of claim 7, wherein receiving the configuration of the first resource pool comprises:

receiving a slot bundling factor of a transmission time interval (TTI) for the first resource pool, the slot bundling factor indicating the number of bundling slots within the TTI.
The method of claim 7, wherein selecting a target resource pool comprises:

receiving the selection criteria indicating a threshold mobility speed; and

in response to a speed of the terminal device exceeding the threshold speed and the first subcarrier spacing being greater than the second subcarrier spacing, selecting the first resource pool as the target resource pool.
The method of claim 7, wherein selecting a target resource pool comprises:

receiving the selection criteria indicating a threshold latency; and

in response to a latency requirement of a traffic of the terminal device exceeding the threshold latency and the first subcarrier spacing being greater than the second subcarrier spacing, selecting the second resource pool as the target resource pool.
The method of claim 7, further comprising:

communicating with the network device using the target resource pool.
The method of claim 7, further comprising:

communicating with a further terminal device using the target resource pool.
A network device, comprising:

at least one processor; and

a memory coupled to the at least one processor, the memory storing instructions therein, the instructions, when executed by the at least one processor, causing the network device to perform acts comprising:

determining, at a network device, configurations of a first resource pool and a second resource pool, a first subcarrier spacing of the first resource pool being different from a second subcarrier spacing of the second resource pool;

determining selection criteria for the first and the second resource pools, the selection criteria associated with a communication condition of a set of terminal devices; and

transmitting the configurations and the selection criteria to the set of terminal devices, such that a target resource pool is selected from the first resource pool and the second resource pool based at least in part on the selection criteria, the target resource pool being used for communicating under the communication condition.
The network device of claim 15, wherein determining the configurations of the first and the second resource pools comprises:

determining the first and the second resource pools being configured over a same carrier frequency.
The network device of claim 15, wherein determining the configurations of the first and the second resource pools comprises:

determining the first and the second resource pools being configured over different carrier frequencies.
The network device of claim 15, wherein determining the configuration of the first resource pool comprises:

determining a slot bundling factor of a transmission time interval (TTI) for the first resource pool, the slot bundling factor indicating the number of bundling slots within the TTI.
The network device of claim 15, wherein determining the selection criteria comprises:

determining the selection criteria based on mobility speeds of the set of terminal devices.
The network device of claim 15, wherein determining the selection criteria comprises:

determining the selection criteria based on latency requirement of a traffic transmitted by at least one terminal device in the set of terminal devices.
A terminal device, comprising:

at least one processor; and

a memory coupled to the at least one processor, the memory storing instructions therein, the instructions, when executed by the at least one processor, causing the terminal device to perform acts comprising:

receiving, at a terminal device, configurations of a first resource pool and a second resource pool from a network device, a first subcarrier spacing of the first resource pool being different from a second subcarrier spacing of the second resource pool;

receiving selection criteria for the first and the second resource pools, the selection criteria associated with a communication condition of the terminal device; and

selecting a target resource pool from the first and the second resource pools based at least in part on the selection criteria, the target resource pool being used for communicating under the communication condition.
The terminal device of claim 21, wherein receiving the configurations of the first and the second resource pools comprises:

receiving the configurations indicating that the first and the second resource pools being configured over a same carrier frequency.
The terminal device of claim 21, wherein receiving the configurations of the first and the second resource pools comprises:

receiving the configurations indicating that the first and the second resource pools being configured over different carrier frequencies.
The terminal device of claim 21, wherein receiving the configuration of the first resource pool comprises:

receiving a slot bundling factor of a transmission time interval (TTI) for the first resource pool, the slot bundling factor indicating the number of bundling slots within the TTI.
The terminal device of claim 21, wherein selecting a target resource pool comprises:

receiving the selection criteria indicating a threshold mobility speed; and

in response to a speed of the terminal device exceeding the threshold speed and the first subcarrier spacing being greater than the second subcarrier spacing, selecting the first resource pool as the target resource pool.
The terminal device of claim 21, wherein selecting a target resource pool comprises:

receiving the selection criteria indicating a threshold latency; and

in response to a latency requirement of a traffic of the terminal device exceeding the threshold latency and the first subcarrier spacing being greater than the second subcarrier spacing, selecting the second resource pool as the target resource pool.
The terminal device of claim 21, wherein the acts further comprises:

communicating with the network device using the target resource pool.
The terminal device of claim 21, wherein the acts further comprises:

communicating with a further terminal device using the target resource pool.
A computer readable medium storing instructions thereon, the instructions, when executed by at least one processing unit of a machine, causing the machine to perform the method according to any one of claims 1-6.
A computer readable medium storing instructions thereon, the instructions, when executed by at least one processing unit of a machine, causing the machine to perform the method according to any one of claims 7-14.