RU2776436C1 - Method and apparatus for configuring direct connection resources based on scheduling - Google Patents

Abstract

FIELD: wireless communication.

SUBSTANCE: method for configuring direct connection resources is executed by a first wireless communication node and comprises the stages of: transmitting a first message to a first wireless communication apparatus; receiving a second message from the first wireless communication apparatus. The first message therein contains a first information of at least one first resource for direct connection transmission and a second information of at least one second resource for uplink control information (UCI). The second message is received from the first wireless communication apparatus on at least one second resource, and the second information of at least one second resource also contains at least one corresponding transmission parameter, wherein at least one transmission parameter contains at least one of the following: a format and a circular shift operation.

EFFECT: reduced communication delay due to the improvement of the wireless spectrum.

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Description

Technical field

The present disclosure relates generally to wireless communications, and more specifically to a method and apparatus for configuring direct connection resources based on scheduling for (re-)transmission of direct connection signals during direct connection communication in a wireless communication network.

prior art

Direct connection (SL) communication is a wireless radio communication directly between two or more user equipment devices (hereinafter “UE”). In this type of communication, two or more UEs that are geographically close to each other can directly communicate without going through a base station (BS), such as an eNB in a Long Term Evolution (LTE) system or a gNB in a New Radio, or a core network. Data transmission in a direct-attached communication is thus different from typical communication in cellular networks, in which the UE transmits data to the BS (i.e., uplink transmissions) or receives data from the BS (i.e., downlink transmissions). connections). In direct connection communication, data is transmitted directly from the source UE to the destination UE via a unified air interface, such as the PC5 interface. Direct-attached communication can provide several benefits, such as reducing data transmission load on the core network, system resource consumption, transmission power consumption, and network operation costs, conserving wireless spectrum resources and improving the spectral efficiency of the cellular wireless communication system.

Brief description of the essence of the invention

The exemplary embodiments disclosed herein are directed to address one or more of the problems in the prior art, as well as to provide additional features that will become apparent upon reference to the following detailed description when considered in conjunction with the accompanying drawings. In accordance with some embodiments, exemplary systems, methods, and computer program products are disclosed herein. It is understood, however, that these embodiments are provided by way of example and not limitation, and those skilled in the art, based on a study of the present disclosure, will appreciate that various modifications to the disclosed embodiments may be made within the scope of the invention.

With the increasing demand for direct connection, direct connection communication is required to support different types of services. In traditional direct-connect communication, the source UE typically uses blind retransmission during broadcast to the target UE. During the unicast and/or multicast process, the target UE may need to send feedback to the source UE so that retransmission is performed only when the previous direct connection transmission fails, indicated by the feedback, e.g., NACK is received by the source UE from the target UE . In the unicast and/or multicast process, the direct connection resource and the direct connection retransmission resources may be preconfigured by the BS and allocated to the UE 104. However, since the BS does not participate directly in the direct connection communication, the BS cannot directly obtain the transfer status of the direct connection (for example, failure or success). Therefore, the method and apparatus for configuring direct connection resources for retransmission of direct connection signals during direct connection communication in the present disclosure can perform efficient, dynamic direct connection resource scheduling to reduce delay, conserve wireless spectrum resources, and improve spectral efficiency.

In one embodiment, the method performed by the first wireless communication node includes: transmitting a first message to the first wireless communication device; and receiving a second message from the first wireless communication device, the first message comprising first information of at least one first resource for direct connection transmission and second information of at least one second resource for uplink control information (UCI), the second message being received from the first wireless communication device on at least one second resource.

In another embodiment, the method performed by the first wireless communication device includes: receiving a first message from the wireless node; and transmitting a second message to the wireless communication node, the first message comprising first information of at least one first resource for transmitting a direct connection and second information of at least one second resource for uplink control information (UCI), the second message being transmitted from the first wireless communication devices on at least one second resource.

In another embodiment, the computing device comprises at least one processor and a memory associated with the processor, the at least one processor configured to perform the method.

In another embodiment, the non-transitory computer-readable medium has computer-executable instructions stored thereon for performing the method.

Brief description of the drawings

Aspects of the present disclosure may be best understood from the following detailed description with reference to the accompanying drawings. It should be noted that the various features are not necessarily represented graphically to scale. In fact, the sizes and geometries of the various features can be arbitrarily scaled up or down for clarity of discussion.

Fig. 1A illustrates an exemplary wireless communication network illustrating the modulation performed as a function of distance from the BS, in accordance with some embodiments of the present disclosure.

Fig. 1B illustrates a block diagram of an exemplary wireless communication system for indicating segment structure information, in accordance with some embodiments of the present disclosure.

Fig. 2 illustrates a method for configuring direct connection retransmission resources, in accordance with some embodiments of the present disclosure.

Fig. 3 illustrates a table showing an uplink control information (UCI) resource configuration table, in accordance with some embodiments of the present disclosure.

Detailed Description of Exemplary Embodiments

Various exemplary embodiments of the invention are described below with reference to the accompanying drawings to enable a person skilled in the art to make and use the invention. As will be apparent to those skilled in the art, upon reading the present disclosure, various changes or modifications to the examples described herein may be made without departing from the scope of the invention. Thus, the present invention is not limited to the exemplary embodiments and uses described or illustrated herein. Additionally, the specific order or hierarchy of steps in the methods disclosed herein are only exemplary approaches. Based on design preferences, the specific order or hierarchy of steps of the disclosed methods or processes may be rearranged while still remaining within the scope of the present invention. Thus, those skilled in the art will appreciate that the methods and techniques disclosed herein present the various steps or steps in an exemplary order, and the invention is not limited to the particular order or hierarchy presented unless otherwise expressly indicated.

Embodiments of the present invention are described in detail with reference to the accompanying drawings. The same or similar components may be referred to by the same or similar reference numerals, although they are illustrated in different drawings. Detailed descriptions of structures or processes well known in the art may be omitted in order to avoid obscuring the essence of the present invention. Additionally, terms are defined in terms of their functionality in an embodiment of the present invention and may vary according to user or operator intent, usage, and so on. Therefore, the determination must be made on the basis of the entire content of this specification.

Fig. 1A illustrates an exemplary wireless communications network 100, in accordance with some embodiments of the present disclosure. In a wireless communication system, a network side wireless node may be a Node B, an E-UTRAN Node B (also known as Evolved Node B, eNodeB or eNB), gNodeB (also known as gNB) in New Radio (NR) technology, pico -station, femto-station or the like. In some embodiments, the network side wireless node may also comprise a relay node (RN), a multi-cell coordination entity (MCE), a gateway (GW), a direct connection management/management node, a mobility management entity (MME), an operation/management device /maintenance (OAM) EUTRAN. The terminal side wireless communication device may be a long-range communication system such as a mobile phone, smartphone, personal digital assistant (PDA), tablet, laptop, or a short-range communication system such as, for example, a wearable device, a vehicle with a transportation system. connections and the like. The network side wireless node is represented by the base station (BS) 102 hereinafter in all embodiments, and is commonly referred to as the “wireless node”. Additionally, the wireless node further also refers to a specific user equipment (UE), which includes one of the following: a roadside unit (RSU), a leading UE in a transport communication group (column), a UE in a direct connection group specified by the BS for scheduling and configuring direct connect resources to other UEs in the direct connect communication group. The terminal side communications device is represented by the user equipment (UE) 104 hereinafter in all embodiments and is commonly referred to as a “wireless communications device”. Such communication nodes and devices may be capable of wireless and/or wired communication, in accordance with various embodiments of the invention. It should be noted that all embodiments are only preferred examples and are not intended to limit the present disclosure. Accordingly, it is understood that the system may include any desired combination of UE and BS while remaining within the scope of the present disclosure.

With reference to FIG. 1A, the wireless communication network 100 includes a BS 102A, a first UE 104-1, and a second UE 104-2. The first UE 104-1 is a vehicle that moves in the first cell 101 covered by the BS 102. In some embodiments, the UE 104-1 has direct links 103 with the BS 102. The second UE 104-2 may also be a vehicle which moves outside the coverage of cell 101 covered by BS 102 and does not have a direct link to BS 102A. Although UE 104-2 does not have a direct link with BS 102, it forms a direct link 105 with its neighbor UEs, eg, UE 104-1 in Direct Connect (SL) communication group 112. Direct communication links between UE 104 and BS 102 may pass through interfaces such as the Uu interface, which is also known as the UMTS (Universal Mobile Telecommunications System (UMTS)) air interface. Direct communication channels 105 between UEs 104 may pass through the PC5 interface, which is being introduced to enable high speed and high density applications such as vehicle-to-all (V2X) and vehicle-to-vehicle (V2V) communications. The BS 102 is connected to the core network (CN) 108 via an external interface 107 such as the Iu interface, the NG interface, and the S1 interface according to the types of the BS 102.

The first UE 104-1 receives its timing reference from the BS 102, which obtains its own timing reference from the CN 108 via an Internet time service such as a common time NTP (Network Time Protocol) server or an RNC (simulation system radio frequency network controller) server. ). This is also known as network-based synchronization. Alternatively, BS 102 may also receive a timing reference from a global navigation satellite system (GNSS) 109 via satellite signal 106, especially for a large BS in a large cell that has a direct view towards the sky, known as satellite timing. The main advantage of satellite synchronization is complete independence, providing a reliable synchronization signal as long as the station remains synchronized with a minimum number of GPS (global positioning system) satellites. Each GPS satellite contains many atomic clocks that provide highly accurate time data to GPS signals. The GPS receivers on the BS 102 decode these signals, effectively synchronizing the corresponding BS 102 to the atomic clock. This allows the corresponding BS 102 to determine time to within 100 billionths of a second (ie, 100 nanoseconds), without the expense of using its own atomic clock.

Similarly, the second UE 104-2 may receive a timing reference from a corresponding BS 102 (not shown), which additionally receives its own timing reference from CN 108 or from GNSS 109, as discussed in detail above. The second UE 104-2 may also receive the timing reference via the first UE 104-1 via a direct-connect link, where the first UE 104-1's timing reference may be either network or satellite as described above.

Fig. 1B illustrates a block diagram of an exemplary wireless communication system 150 for transmitting and receiving downlink, uplink, and direct-attached signals, in accordance with some embodiments of the present disclosure. System 150 may include components and elements configured to support known or conventional operating characteristics that do not require detailed description. In one exemplary embodiment, system 150 may be used to transmit and receive data symbols in a wireless communication environment, such as the wireless communication network 100 of FIG. 1A as described above.

System 150 typically includes a BS 102, a first UE 104-1, and a second UE 104-2, collectively referred to below as BS 102 and UE 104 for ease of discussion. The BS 102 each includes a BS transceiver module 152, a BS antenna array 154, a BS memory module 156, a BS processor module 158, and a network interface 160, each module being connected and interconnected with each other, as necessary, via a data bus 180. The UE 104 includes a UE transceiver module 162, a UE antenna 164, a UE memory module 166, a UE processor module 168, and an I/O interface 169, each module is connected and interconnected with each other, as necessary, via a data bus 190. BS 102 communicates with UE 104 via communication channel 192, which may be any wireless channel or other media known in the art suitable for data transmission as described herein.

As will be appreciated by those skilled in the art, system 150 may further include any number of modules other than those shown in FIG. 1b. Those skilled in the art will appreciate that the various illustrative blocks, modules, circuits, and processing logic described in connection with the embodiments disclosed herein may be implemented in hardware, computer-readable software, firmware, or any combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps are described generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software depends on the particular application and design constraints imposed on the overall system. Those who are intimately familiar with the principles described herein will be able to implement such functionality appropriately for each particular application, but such implementation decisions should not be interpreted as limiting the scope of the present invention.

The wireless transmission from the transmit antenna of the UE 104 to the receive antenna of the BS 102 is known as the uplink transmission, and the wireless transmission from the transmit antenna of the BS 102 to the receive antenna of the UE 104 is known as the downlink transmission. In accordance with some embodiments, UE transceiver 162 may be referred to herein as "uplink" transceiver 162, which includes an RF transmitter and receiver circuitry each associated with a UE antenna 164. A duplex switch (not shown) may alternately associate the uplink transmitter or receiver with the uplink antenna in time duplex mode. Likewise, in accordance with some embodiments, BS transceiver 152 may be referred to herein as "downlink" transceiver 152, which includes an RF transmitter and receiver circuitry, each coupled to an antenna array 154. The downlink duplex switch may alternately to associate the downlink transmitter or receiver with the downlink antenna array 154 in time duplex mode. The operations of the two transceivers 152 and 162 are coordinated in time so that the uplink receiver is connected to the uplink UE antenna 164 to receive transmissions on the wireless channel 192 at the same time that the downlink transmitter is connected to the downlink antenna array 154 connections. UE transceiver 162 communicates via UE antenna 164 with BS 102 via wireless channel 192 or with other UEs via wireless channel 193. Wireless communication channel 193 may be any wireless channel or other media known in the art suitable for direct connection data transmission as described herein.

UE transceiver 162 and BS transceiver 152 are configured to communicate via wireless data channel 192 and interact with a suitably configured RF antenna system 154/164 that may support a particular wireless communication protocol and modulation scheme. In some exemplary embodiments, UE transceiver 162 and BS transceiver 152 are configured to support industry standards such as Long Term Evolution (LTE) and 5G emerging standards (eg, NR) and the like. It is understood, however, that the invention is not necessarily limited to application to a particular standard and associated protocols. In contrast, UE transceiver 162 and BS transceiver 152 may be configured to support alternative or additional wireless communication protocols, including future standards or variations thereof.

Processor modules 158 and 168 may be implemented or implemented with a general purpose processor, content addressable memory, digital signal processor, application specific integrated circuit, field programmable gate array, any suitable programmable logic device, discrete gateway or transistor logic, discrete hardware components, or any combinations of them designed to perform the functions described in this document. Thus, the processor may be implemented as a microprocessor, controller, microcontroller, state machine, or the like. The processor may also be implemented as a combination of computing devices, such as a combination of a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in association with a digital signal processor core, or any other such configuration.

Moreover, the steps of a method or algorithm described in conjunction with the embodiments disclosed herein may be embodied directly in hardware, in firmware, in a software module executed by processor modules 158 and 168, respectively, or any combination thereof. Memory modules 156 and 166 may be implemented as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage media known in the art. In this regard, memory modules 156 and 166 may be coupled to processor modules 158 and 168, respectively, such that processor modules 158 and 168 can read information from and write information to memory modules 156 and 166, respectively. Memory modules 156 and 166 may also be integrated into their respective processor modules 158 and 168. In some embodiments, memory modules 156 and 166 may each include a cache for storing temporary variables or other intermediate information during execution of instructions to be executed by processor modules 158 and 168, respectively. Each of memory modules 156 and 166 may also include non-volatile memory for storing instructions to be executed by processor modules 158 and 168, respectively.

The network interface 160 typically represents the hardware, software, firmware, processing logic, and/or other components of the BS 102 that enable bi-directional communication between the BS transceiver 152 and other network components and communication nodes configured to communicate with the BS 102. For example, , network interface 160 may be configured to support Internet traffic or WiMAX traffic. In a typical deployment, without limitation, network interface 160 provides an 802.3 Ethernet interface so that BS transceiver 152 can communicate with a traditional Ethernet-based computer network. Thus, network interface 160 may include a physical interface for connecting to a computer network (eg, a mobile switching center (MSC)). The terms “configured for” or “configured to”, as used herein in relation to a given operation or function, refer to a device, component, circuit, structure, machine, signal, etc., that is physically created, programmed, formatted and/ or arranged to perform a given operation or function. Network interface 160 may allow BS 102 to communicate with other BSs or the core network over a wired or wireless connection.

With reference again to FIG. 1A, as mentioned above, BS 102 rebroadcasts system information associated with BS 102 to one or more UEs (eg, 104) to allow UE 104 to access the network in the cell (eg, 101 for BS 102), where located BS 102, and in general to work properly in the cell. Various information such as, for example, downlink and uplink cell bandwidths (capacities), downlink and uplink configuration, random access configuration, etc., may be included in the system information, which will be discussed in more detail below. Typically, the BS 102 broadcasts a first signal carrying some main system information, such as cell configuration 101, via a PBCH (Physical Broadcast Channel). For clarity of illustration, such a broadcast first signal is referred to herein as a “first broadcast signal”. It should be noted that the BS 102 may sequentially broadcast one or more signals carrying some other system information via respective channels (eg, physical downlink shared channel (PDSCH)), which are herein referred to as “second broadcast signal”, “third broadcast signal” and so on.

With reference again to FIG. 1B, in some embodiments, the main system information carried by the first broadcast signal may be transmitted by the BS 102 in symbol format via the communication channel 192 (eg, PBCH). In accordance with some embodiments, the original form of the main system information may be represented as one or more digital bit sequences, and the one or more digital bit sequences may be processed in a plurality of steps (e.g., coding, scrambling, modulation, display, etc. steps). .), all of which may be processed by the BS processor unit 158 to become the first broadcast signal. Similarly, when UE 104 receives the first broadcast signal (in symbol format) using UE transceiver 162, according to some embodiments, UE processor module 168 may perform a plurality of steps (demapping, demodulation, decoding, etc.) to evaluate the main system information, such as, for example, bit locations, bit numbers, etc., of the main system information bits. The UE processor module 168 is also coupled to an I/O interface 169 that provides the UE 104 with the ability to connect to other devices such as computers. Interface 169 I/O is the communication path between this equipment and the module 168 processor UE.

In some embodiments, UE 104 may operate in a hybrid/heterogeneous communications network in which UE 104 communicates with BS 102 and with other UEs, such as between UEs 104-1 and 104-2. As described in more detail below, UE 104 supports direct connection communication with other UEs as well as downlink/uplink communication between BS 102 and UE 104. As discussed above, direct connection communication allows UEs 104-1 and 104-2 in the direct connection communication group 112, establish a direct link with each other or with other UEs from different cells without requiring the BS 102 to relay data between the UEs.

Fig. 2 illustrates a method 200 for configuring direct connection retransmission resources, in accordance with some embodiments of the present disclosure. It will be understood that additional steps may be provided before, during, and after the method 200 of FIG. 2 and that some operations may be omitted or reordered. The communication system in the illustrated embodiment comprises a BS 102, a first UE 104-1, and a second UE 104-2. In the illustrated embodiments, the first UE 104-1 is in at least one serving cell covered by the BS 102, ie. the first UE 104-1 is in direct connection with the BS 102. It should be noted that the method 200 shown in FIG. 2 is intended to be illustrative, but not intended to be limiting. The communication system may contain any number of BS 102 and UE 104 that can be used and are within the scope of the present invention.

Method 200 begins at operation 202, in which the BS 102 transmits the first message to the first UE 104-1, in accordance with some embodiments. In some embodiments, the first message is carried by at least one of a downlink control information (DCI) and a radio resource control (RRC) message. In some embodiments, the first message contains a first set of configuration information for at least one direct connect resource for a direct connect link. In some embodiments, each of the at least one Direct Connect resource is used to transmit a Direct Connect when the first UE 104-1 multicasts multiple Direct Connect signals to multiple UEs in Direct Connect group 112, and/or when the first UE 104 -1 performs retransmission for transmission reliability (eg, protocol data unit or transmission block during one direct connection transmission), and/or when the first UE 104-1 unicasts multiple direct connection signals to destination UE 104-2.

In some embodiments, the first message further comprises a second set of configuration information of at least one uplink control information (UCI) resource in the time and frequency domain, wherein each of the at least one UCI resource in the first message corresponds to one of at least one direct connection resource in the first message. In some embodiments, at least one UCI resource is used for the first UE 104-1 to send a feedback message to the BS 102 based on the received message from the second UE 104-2 to inform the BS 102 of the status of the corresponding forward connection transmission on the corresponding direct connection resource.

In some embodiments, the first message may further comprise third information of at least one direct connection retransmission resource. In some embodiments, each of the at least one direct connection retransmission resource is a resource for retransmitting a potential previously unsuccessful direct connection transmission. In some embodiments, each of the at least one direct connection retransmission resource has the same configuration as the at least one direct connection resource. In some other embodiments, BS 102 may configure a direct connection retransmission resource after receiving a feedback message from the first UE 104-1.

In some embodiments, the first message may also be transmitted from a particular UE to other UEs. For example, a particular UE may be one of the following: a roadside unit (RSU), a leading UE 104 in a transport communication group (column), a UE 104 in a direct connection group specified by the BS 104 for scheduling and configuring direct connection resources per UE in group 112 direct connection links.

In some embodiments, the second set of at least one UCI resource configuration information comprises a plurality of second configurations of the at least one UCI resource. In some embodiments, each of the plurality of second configurations of at least one UCI resource comprises at least one of: the number of units of the first resource in the time domain, the position of the units of the first resource in the time domain (e.g., the start symbol in the time segment, the position of the time segment), the number of units of the second resource in the frequency domain, and the position of the units of the second resource in the frequency domain. In some embodiments, the position of the first resource units and/or the second resource units in the time domain is determined relative to the position of the first message (eg, DCI) in the time domain. In some embodiments, each of the first resource units may be one of the following: a symbol, a time slot, a subframe, and a mini time slot. In some embodiments, each of the second resource units may be one of the following: carrier, subcarrier, fraction of bandwidth (BWP), subchannel, and physical resource block (PRB). In some embodiments, the units of the first resource in the time domain and the units of the second resource in the frequency domain are determined by one of the following: the numerology of the signals transmitted on at least one UCI resource and the numerology of the signals for the transmission of the first message. In some embodiments, the numerology is a subcarrier spacing (SCS) and a cyclic prefix (CP). In some embodiments, the second configuration information of at least one UCI resource may be indicated implicitly or explicitly in the first message.

In some embodiments, when at least one of the plurality of second configurations in the second set of configuration information of at least one UCI resource is preconfigured by the system and set to default, at least one of the plurality of second configurations may be one of the following: not specified and is listed implicitly in the first post. For example, when the number of PRBs or subcarriers is preconfigured by the system, the number of PRBs or subcarriers is not explicitly indicated in the first message. As another example, when the first carrier or BWP on which at least one UCI resource is carried is the same as the carrier or BWP used to carry the corresponding DCI, or is a carrier pair or BWP pair of that carrier or BWP, used to carry the corresponding DCI, the second information of at least one UCI resource is not explicitly indicated in the first message. In some embodiments, the second configuration information of the at least one UCI resource further comprises transmission parameter configuration information, such as a format supported by an uplink control channel, parameters for a cyclic shift operation, and so on. In some embodiments, the format supported by the uplink control channel contains a number of symbols and carries a number of bits.

In another embodiment, the second configuration information of at least one UCI resource may be at least one of the following: configured by at least one upper layer signaling (e.g., RRC signaling) and indicated by DCI using an index in the resource configuration table UCI. In some embodiments, the second configuration information comprises at least one UCI resource configuration table. In some embodiments, each of the at least one UCI resource configuration table contains at least one of the following: a plurality of indices and each of the plurality of indices corresponds to at least one second configuration of at least one corresponding UCI resource in the time and frequency domain, and each of the plurality of indices corresponds to at least one transfer parameter of at least one corresponding UCI resource.

Fig. 3 illustrates a table 300 showing a UCI resource configuration table, in accordance with some embodiments of the present disclosure. In the illustrated embodiment, table 300 contains 3 index values 302 and 4 configuration parameters, i. format 304, start character 306, character length 308, and start PRB 310. Although only 4 configuration parameters and 3 values for each configuration parameter are shown in FIG. 3, it should be noted that the UCI resource configuration table may contain any number of a plurality of different configuration parameters, and any values for at least one UCI resource may be included that fall within the scope of the present invention. In some embodiments, a UCI resource configuration table may be used in conjunction with an explicit indication to determine all of the configuration parameters of at least one UCI resource corresponding to at least one direct connection resource.

In the illustrated embodiment in FIG. 3, at index 0, the UCI (or PUCCH, Physical Uplink Control Channel) resource format 304 corresponds to 0; time slot start symbol 306 corresponds to 12, symbol length 308 corresponds to 2, and frequency domain start PRB 310 corresponds to 0. Similarly, at index 1, UCI resource format 304 corresponds to 1; the start symbol 306 in the time slot corresponds to 1, the symbol length 308 corresponds to 4, and the start PRB 310 in the frequency domain corresponds to 0. At index N, where N is a positive integer, the UCI resource format 304 corresponds to 3; the start symbol 306 in the time segment corresponds to 0, the symbol length 308 corresponds to 14, and the start PRB 310 in the frequency domain corresponds to 2.

In some embodiments, at least one UCI resource set may be semi-persistently (pre-)configured by the BS 102 for the first UE 104-1 via RRC signaling. In some embodiments, at least one set of UCI resources is periodic. In some embodiments, each of the at least one set of UCI resources in one period contains at least one UCI resource for transmitting the UCI of the corresponding direct connection signal. In some embodiments, the time and frequency domain position of at least one UCI resource in at least one UCI resource set in one period and transmission parameter information may also be indicated by RRC signaling from BS 102.

In some embodiments, when at least one direct connection resource is indicated in the DCI by the BS 102, at least one corresponding direct connection resource identifier may also be indicated by the BS 102 to the first UE 104-1. In some embodiments, each of the at least one direct connection resource identifier may each be one of the following: a hybrid automatic repeat request (HARQ) process identifier, a direct connection process identifier, and a UE identifier. In some embodiments, when UE 104 transmits a UCI on a corresponding UCI resource configured by BS 102, the UCI transmitted from UE 104 to BS 102 also contains the corresponding direct connection resource identifier. In some embodiments, the indication of the corresponding direct connection resource identifier in the UCI may be transferred explicitly to the UCI or implicitly. In some embodiments, the implicit indication of the direct connection resource identifier may be one of the following: use the appropriate sequence, and use the direct connection resource identifier to perform the appropriate processing on the UCI. In some embodiments, the corresponding processing comprises one of the following: scrambling and rotation.

In some embodiments, the direct connection resource set comprises at least one direct connection resource, wherein at least one direct connection resource of the direct connection resource set corresponds to the same UCI. In some embodiments, the UCI may be used to indicate whether a direct connection transfer is successful on each of the at least one direct connection resource in the direct connection resource set. In some embodiments, when a direct connection transmission contains a plurality of subblocks, the UCI may also be used to indicate whether each of the plurality of subblocks is successful in the direct connection transmission. In some embodiments, at least one direct connection resource in the direct connection resource set may be used as a direct connection retransmission resource for retransmission of direct connection signals. In some other embodiments, at least one direct connection resource in the direct connection resource set may be used to convey various direct connection data. In some embodiments, at least one direct connection resource in a direct connection resource set may be indicated by at least one DCI or RRC signaling. In some embodiments, at least one direct connection resource in a direct connection resource set may reside on the same carrier or on different carriers.

In some embodiments, the first message is a Direct Connect Grant message, wherein the Direct Connect Grant message contains a first set of configuration information of at least one Direct Connect resource in the time and frequency domain for Direct Connect communication. Additionally, the direct connection grant message also contains a second set of configuration information of at least one UCI resource in the time and frequency domain. In some embodiments, the first set of configuration information of at least one direct connection resource comprises a plurality of first configurations of at least one direct connection resource; and the second set of configuration information of the at least one UCI resource comprises a plurality of second configurations of the at least one UCI resource. Each of the plurality of first patterns and the plurality of second patterns comprises at least one of the following: the position and/or number of units of the first resource in the time domain, the position and/or number of units of the second resource in the frequency domain. In some embodiments, the first configuration information of the at least one direct connection resource may be implicitly or explicitly indicated in the direct connection grant message. In some embodiments, at least one UCI resource is used to send a request for at least one direct connection retransmission resource by the first UE 104 to the BS 102.

Method 200 continues at operation 204, in which the first UE 104-1 transmits a second message to the second UE 104-2, in accordance with some embodiments. In some embodiments, the second message is a direct connect signal, where the direct connect signal can be one of the following: unicast, multicast, and broadcast from the first UE 104-1 to the second UE 104-2. In some embodiments, the second message is sent on at least one direct connection resource indicated in the first message. In some embodiments, the second message further comprises Direct Connect Control Information (SCI), wherein the SCI is used to indicate at least one Direct Connect resource and at least one corresponding UCI resource from the first UE 104-1 to the second UE 104-2 .

Method 200 continues at operation 206, in which the first UE 104-1 receives a third message from the second UE 104-2, in accordance with some embodiments. In some embodiments, the third message is transmitted by the second UE 104-2 on at least one direct connection resource that is indicated in the second message received from the first UE 104-1. In some embodiments, the third message contains a feedback message containing the status of transmission from the first UE 104-1 and receipt by the second UE 104-2 of the second message. Specifically, when the transmission and/or reception of the second message is successful, the third message indicates that the transmission of the direct connection is successful; and when the transmission and/or reception of the second message is unsuccessful, the third message indicates that the transmission of the direct connection is unsuccessful.

Method 200 continues at operation 208, in which the first UE 104-1 transmits a fourth message to the BS 102, in accordance with some embodiments. In some embodiments, the fourth message is transmitted on at least the UCI resource indicated in the first message from BS 102. In some embodiments, the fourth message contains one of the following: an ACK/NACK message corresponding to a direct connection transmission and a scheduling request signal ( SR) for the corresponding direct connection transfer. For example, when a direct connection NACK is transmitted or when an SR signal is transmitted in the fourth message from the first UE 104-1 to the BS 102, the fourth message is used to request at least one direct connection retransmission resource. In this case, after receiving the fourth message from the first UE 104-1, the BS 102 may send another first message with a direct connection grant message to the first UE 104-1. Similarly, when a direct connection ACK is transmitted or when no SR signal is transmitted or when a negative SR signal is transmitted in the fourth message from the first UE 104-1 to the BS 102, the fourth message does not request at least one direct connection retransmission resource.

In some embodiments, the fourth message contains release information, where the release information is used to release at least one direct connection resource. In some embodiments, the release information may be one of the following: direct connection ACK/NACK information and a scheduling release signal for direct connection transmission. In some embodiments, when the release information is a direct connection ACK, at least one direct connection resource may be released. For example, BS 102 allocates m direct connection resources and m-1 corresponding UCI resources in the first message to UE 104. When the i-th direct connection transmission is successful, the release information in the fourth message informs BS 102 to release resources [i+1:m ] in m resources, where m and i are positive integers. In some embodiments, the freed resources [i+1:m] may be allocated to other UEs 104 in the same direct connection group 112 or in a different direct connection group for direct connection communication.

In some embodiments, when at least one direct connection retransmission resource is allocated by the BS 102 to the first UE 104-1, the fourth message contains acknowledgment information, where the acknowledgment information is used to confirm the use of one of the at least one direct connection retransmission resource. connection for the next direct connection transmission (eg, confirm the use of the next direct connection resource from at least one direct connection retransmission resource) when the previous direct connection transmission is unsuccessful. In some embodiments, the acknowledgment information in the fourth message may be one of the following: a Direct Connect ACK/NACK message corresponding to the Direct Connect transmission and a scheduling acknowledgment signal for the corresponding Direct Connect transmission. In some embodiments, when the acknowledgment information is a direct connection NACK, one of the at least one direct connection retransmission resource may be used for a second direct connection transmission. In this case, when the BS 102 receives the acknowledgment information on at least one of the UCI resources, the BS 102 assumes that the first UE continues to use the at least one direct connection retransmission resource for the next direct connection transmission.

In some embodiments, when the second UE 104-2 is in one of the at least one cell covered by the BS 102, the UE 104-2 may directly communicate with the BS 102. In this case, the second UE 104B may directly receive the first configuration information at least one direct connection resource and second configuration information of at least one UCI resource from BS 102 or may receive a first set of configuration information of at least one direct connection resource and a second set of configuration information of at least one UCI resource from SCI transmitted first UE 104-1. In some embodiments, the second UE 104-2 may directly send a message to the BS 102 to request, release, or acknowledge at least one direct connection resource to retransmit the direct connection.

While various embodiments of the invention have been described above, it should be understood that they have been presented by way of example only and not by way of limitation. Likewise, various diagrams may depict an exemplary architecture or configuration, which are provided to enable those skilled in the art to understand exemplary features and functions of the invention. Those skilled in the art, however, should appreciate that the invention is not limited to the illustrated exemplary architectures or configurations, but may be implemented using a variety of alternative architectures and configurations. Additionally, as will be appreciated by those skilled in the art, one or more features of one embodiment may be combined with one or more features of another embodiment described herein. Thus, the breadth and scope of the present disclosure should not be limited by any of the exemplary embodiments described above.

It is also understood that any reference to an element herein using a definition such as "first," "second," and so on does not generally limit the number or order of those elements. Rather, these definitions may be used here as a convenient means of distinguishing between two or more elements or instances of an element. Thus, referring to the first and second elements does not mean that only two elements can be used, or that the first element must precede the second element in some way.

Additionally, one of skill in the art would appreciate that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, and symbols that may be referred to in the description above may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

One of ordinary skill in the art will further appreciate that any of some of the illustrative logical blocks, modules, processors, means, circuits, methods, and functions described in conjunction with the aspects disclosed herein may be implemented in electronic hardware (e.g., digital implementation, analog implementation, or a combination thereof, which may be designed using source coding or some other method), various forms of software or design code embodying instructions (which may be referred to here for convenience as "software" or "software module"), or their combinations. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software, or a combination of these techniques, depends on the particular application and design constraints imposed on the overall system. Those skilled in the art will be able to implement the described functionality in a variety of ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

Moreover, one of ordinary skill in the art will appreciate that the various illustrative logical blocks, modules, devices, components, and circuits described herein may be implemented or implemented by an integrated circuit (IC), which may include a general purpose processor, a digital signal processor (DSP), application specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, or any combination thereof. Logical blocks, modules, and circuits may further include antennas and/or transceivers for communicating with various components in a network or device. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, or state machine. A processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration to perform the functions described herein.

When implemented in software, the functions may be stored as one or more instructions or code on a computer-readable medium. Thus, the steps of a method or algorithm disclosed herein may be implemented as software stored on a computer-readable medium. Computer-readable media includes both computer storage media and communication media, including any media that can be provided to carry a computer program or code from one place to another. Storage media can be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other media that can be used. to store the desired program code in the form of instructions or data structures, and which can be accessed by a computer.

In this document, the term "module", as used here, refers to software, firmware, hardware, and any combination of these elements to perform the associated functions described here. Additionally, for the purpose of discussion, the various modules are described as discrete modules; however, as will be appreciated by one of skill in the art, two or more modules may be combined to form a single module that performs associated functions in accordance with embodiments of the invention.

Additionally, memory or other storage as well as communication components may be used in embodiments of the invention. It will be appreciated that, for purposes of clarity, in the above description, embodiments of the invention have been described with reference to various functional blocks and processors. However, it will be apparent that any suitable distribution of functionality between different functional blocks, processing logic elements or areas can be used without deviating from the invention. For example, functionality illustrated as being performed by separate processing logic elements or controllers may be performed by the same processing logic element or controller. Thus, references to specific functional blocks are only references to a suitable means for providing the described functionality, and do not indicate a rigid logical or physical structure or organization.

Various modifications to the implementations described in this disclosure will be apparent to those skilled in the art, and the general principles defined here may apply to other implementations without departing from the scope of this disclosure. Thus, the disclosure is not intended to be limited to the implementations shown here, but is to be within the broadest scope consistent with the novel features and principles disclosed herein as set forth in the claims.

Claims (38)

1. A method for configuring direct connection resources, performed by the first wireless communication node, comprising: transmitting the first message to the first wireless communication device; and receiving a second message from the first wireless communication device, wherein the first message comprises first information of at least one first resource for transmitting a direct connection and second information of at least one second resource for uplink control information (UCI), wherein the second message is received from the first wireless communication device at at least one second resource, and the second information of at least one second resource also contains at least one corresponding transmission parameter, wherein at least one transmission parameter contains at least one of the following: a format and a cyclic shift operation. 2. The method of claim 1, wherein the first message is transmitted in at least one of a downlink control information (DCI) and a radio resource control (RRC) message. 3. The method of claim 1, wherein each of the first and second information comprises at least one of: a number of time domain resource units, a position of time domain resource units, a number of frequency domain resource units, and a position of frequency domain resource units, each of the time domain resource units is one of the following: symbol, time slot, subframe, and mini-time slot, and wherein each of the frequency domain resource units is one of the following: carrier, subcarrier, fraction of bandwidth (BWP), subchannel, and physical resource block (PRB). 4. The method of claim 3, wherein each of the time domain resource units and the frequency domain resource units is determined by the numerology of one of the following: a first wireless signal transmitted on at least one first resource, a second wireless signal transmitted on at least one a second resource, and a third wireless signal for transmitting the first message, the numerology being subcarrier spacing (SCS) and cyclic prefix (CP). 5. The method of claim 1, wherein the second information of the at least one second resource in the first message is one of the following: configured by semi-persistent signaling and indicated using an index in at least one second resource configuration table, each of at least one second resource configuration table comprises a plurality of indices, each of the plurality of indices corresponding to at least one of the following: a configuration of one of the at least one corresponding second resource in the time and frequency domain and at least one corresponding transmission parameter. 6. The method of claim 1, wherein the first message further comprises at least one corresponding direct connection resource identifier, wherein the at least one corresponding direct connection identifier is one of the following: hybrid automatic repeat request (HARQ) process identifier, identifier the direct connection process and the ID of the first wireless device. 7. The method of claim 6, wherein the second message further comprises at least one corresponding direct connection identifier, wherein the at least one corresponding direct connection identifier is indicated by one of the following: using an appropriate sequence, and using a direct connection resource identifier to perform the corresponding processing. on the UCI, with the corresponding processing comprising one of the following: scrambling and rotation. 8. The method according to p. 1, further comprising: before receiving, transmitting the third message by the first wireless communication device to the second wireless communication device; and receiving a fourth message by the first wireless communication device from the second wireless communication device, wherein each of the third and fourth messages is transmitted on at least one first resource. 9. The method of claim 8, wherein the third message comprises at least one direct connection transmission and direct connection control information (SCI), wherein SCI is used to convey first information of at least one first resource and second information of at least one of the corresponding second resource from the first wireless communication device to the second wireless communication device, and wherein the fourth message contains status information of at least one corresponding direct connection transmission, the status of at least one corresponding direct connection transmission being used to determine the second message. 10. The method of claim 1, wherein the second message comprises one of an ACK/NACK message and a scheduling request signal, the second message being used to request at least one third resource for at least one direct connection retransmission. 11. The method of claim 1, wherein the second message comprises one of an ACK/NACK message and a scheduling release signal, the second message being used to release at least one first resource. 12. The method of claim 1, wherein the second message comprises one of the following: an ACK/NACK message and a scheduling acknowledgment signal, the second message being used to acknowledge at least one additional forward connection transmission on at least one first resource. 13. A method for configuring direct connection resources, performed by the first wireless communication device, comprising: receiving a first message from the wireless communication node; and transmitting the second message to the wireless communication node, wherein the first message contains first information of at least one first resource for transmitting a direct connection and second information of at least one second resource for uplink control information (UCI), wherein the second message is transmitted from the first wireless communication device on at least one second resource, and the second information of at least one second resource also contains at least one corresponding transmission parameter, wherein at least one transmission parameter contains at least one of the following: a format and a cyclic shift operation. 14. The method of claim 13, wherein the first message is received in at least one of a downlink control information (DCI) and a radio resource control (RRC) message. 15. The method of claim 13, wherein each of the first and second information comprises at least one of a number of time domain resource units, a position of time domain resource units, a number of frequency domain resource units, and a position of frequency domain resource units, each of the time domain resource units is one of the following: symbol, time slot, subframe, and mini-time slot, and wherein each of the frequency domain resource units is one of the following: carrier, subcarrier, fraction of bandwidth (BWP), subchannel, and physical resource block (PRB). 16. The method of claim 15, wherein each of the time domain resource units and the frequency domain resource units is determined by the numerology of one of the following: a first wireless signal transmitted on at least one first resource, a second wireless signal transmitted on at least one a second resource, and a third wireless signal for transmitting the first message, the numerology being subcarrier spacing (SCS) and cyclic prefix (CP). 17. The method of claim 13, wherein the second information of the at least one second resource in the first message is one of the following: configured semi-persistent signaling and indicated using an index in at least one second resource configuration table, each of at least at least one second resource configuration table contains a plurality of indices, each of the plurality of indices corresponding to at least one of the following: a configuration of one of the at least one corresponding second resource in the time and frequency domain and at least one corresponding transmission parameter. 18. The method of claim 13, wherein the first message further comprises at least one corresponding direct connection resource identifier, wherein the at least one corresponding direct connection identifier is one of the following: hybrid automatic repeat request (HARQ) process identifier, identifier the direct connection process and the ID of the first wireless device. 19. The method of claim 18, wherein the second message further comprises at least one corresponding direct connection identifier, wherein the at least one corresponding direct connection identifier is indicated by one of the following: using an appropriate sequence, and using a direct connection resource identifier to perform the corresponding processing. on UCI, and the corresponding processing contains one of the following: scrambling and cyclic shift. 20. The method of claim 13, further comprising: before receiving, transmitting the third message to the second wireless communication device; and receiving a fourth message from the second wireless communication device, wherein each of the third and fourth messages is transmitted and received on at least one first resource. 21. The method of claim 20, wherein the third message comprises at least one direct connection transmission and direct connection control information (SCI), wherein the SCI is used to convey first information of at least one first resource and second information of at least one of the corresponding second resource to the second wireless communication device, and wherein the fourth message contains status information of at least one corresponding direct connection transmission, the status of at least one corresponding direct connection transmission being used to determine the second message. 22. The method of claim 13, wherein the second message comprises one of an ACK/NACK message and a scheduling request signal, the second message being used to request at least one third resource for at least one direct connection retransmission. 23. The method of claim 13, wherein the second message comprises one of an ACK/NACK message and a scheduling release signal, the second message being used to release at least one first resource. 24. The method of claim 13, wherein the second message comprises one of an ACK/NACK message and a scheduling acknowledgment signal, the second message being used to acknowledge at least one further direct connection transmission on at least one first resource. 25. A computing device containing at least one processor configured to perform the method according to any one of paragraphs. 1-24. 26. A non-transitory computer-readable medium having computer-executable instructions stored thereon for performing the method of any one of claims. 1-24.

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