Reusing sidelink resources

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In certain aspects, a first user equipment (UE) can receive, from at least one second UE, first control information associated with a first set of reserved resources on a sidelink channel. The first UE can attempt to decode additional control information based at least in part on the first control information. The first UE can transmit a message using the first set of reserved resources based at least in part on failing to decode the additional control information. In certain aspects, the first UE can determine, based on one or more resource dimensions, at least one first distance between the first UE and the at least one second UE, such that the message is transmitted at a first transmit power based at least in part on the first distance. Numerous other aspects are provided.

Description

[0001] Cross-reference to related applications

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 067,153, filed August 18, 2020, entitled “REUSING SIDELINK RESOURCESBASED ON RESOURCE DISTANCE”, and U.S. Non-Provisional Patent Application No. 17 / 445,174, filed August 16, 2021, entitled “REUSING SIDELINK RESOURCES”, which are hereby expressly incorporated herein by reference. Technical Field

[0003] This disclosure relates generally to wireless communication, and specifically to techniques and apparatus for reusing sidelink resources. Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that enable communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE-Advanced is a collection of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard issued by the 3rd Generation Partnership Project (3GPP).

[0005] A wireless network may include one or more base stations that support communication between user equipment (UE) or multiple UEs. UEs may communicate with base stations via downlink and uplink communication. "Downlink" (or "DL") refers to the communication link from the base station to the UE, while "uplink" (or "UL") refers to the communication link from the UE to the base station.

[0006] The aforementioned access technologies have been used in various telecommunications standards to provide a common protocol enabling different UEs to communicate at the city, country, region, and / or global levels. New Radio (NR) (which may be referred to as 5G) is a collection of enhancements to the LTE mobile standard issued by 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, reducing costs, improving service, utilizing new spectrum, and better integrating with Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) on the downlink (CP-OFDM), and CP-OFDM and / or Single Carrier Frequency Division Multiplexing (SC-FDM) (also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink, as well as other open standards supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements to LTE, NR, and other radio access technologies remain useful. Summary of the Invention

[0007] Certain aspects described herein relate to apparatus for wireless communication at a first user equipment (UE). The apparatus may include a memory and one or more processors coupled to the memory. One or more processors may be configured to receive, from at least one second UE, first control information associated with a first set of reserved resources on a sidelink channel, and to attempt to decode additional control information based at least in part on the first control information. One or more processors may also be configured to transmit a message using the first set of reserved resources based at least in part on the failure to decode the additional control information.

[0008] Certain aspects described herein relate to a method of wireless communication performed by a first UE. The method may include receiving, from at least one second UE, first control information associated with a first set of reserved resources on a sidelink channel. The method may also include attempting to decode additional control information, at least in part, based on the first control information. The method may include transmitting a message using the first set of reserved resources, at least in part, based on the failure to decode the additional control information.

[0009] Certain aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication performed by a first UE. When executed by one or more processors of the first UE, the set of instructions can cause the first UE to receive first control information associated with a first reserved resource set on a sidelink channel from at least one second UE. When executed by one or more processors of the first UE, the set of instructions can also cause the first UE to attempt to decode additional control information, at least in part, based on the first control information. When executed by one or more processors of the first UE, the set of instructions can cause the first UE to use the first reserved resource set to send a message, at least in part, based on its failure to decode the additional control information.

[0010] Certain aspects described herein relate to apparatus for wireless communication. The apparatus may include components for receiving, from at least one UE, first control information associated with a first set of reserved resources on a sidelink channel. The apparatus may also include components for attempting to decode additional control information, at least in part, based on the first control information. The apparatus may include components for transmitting a message using the first set of reserved resources, at least in part, based on the failure to decode the additional control information.

[0011] As fully described herein with reference to the accompanying drawings and description, and as illustrated in the drawings and description, various aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication equipment, and / or processing systems.

[0012] The features and technical advantages of the examples according to this disclosure have been outlined quite extensively above in order to provide a better understanding of the following detailed description. Additional features and advantages will be described below. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures for achieving the same purpose of this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, their organization and operation, along with their associated advantages, will be better understood from the following description when considered in conjunction with the appended drawings. Each of the drawings is provided for illustrative and descriptive purposes and not as a definition of limitation of the claims.

[0013] Although aspects are described herein by way of example, those skilled in the art will understand that such aspects can be implemented in many different arrangements and scenarios. The techniques described herein can be implemented using different platform types, devices, systems, shapes, sizes, and / or package arrangements. For example, some aspects can be implemented via integrated chip embodiments and / or other devices based on non-modular components (e.g., end-user equipment, vehicles, communication equipment, computing devices, industrial equipment, retail / procurement equipment, medical devices, and / or artificial intelligence devices). Aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, and / or system-level components. Devices combining the described aspects and features may include additional components and features for the implementation and practice of the claimed and described aspects. For example, the transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and / or summers). The aspects described herein are intended to be practiced in a variety of devices, components, systems, distributed arrangements, and / or end-user equipment with different sizes, shapes, and configurations. Attached Figure Description

[0014] To gain a more detailed understanding of the features of this disclosure, reference can be made to various aspects for a more specific description, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings illustrate only certain typical aspects of this disclosure and should therefore not be considered as limiting the scope of this disclosure, as other equivalent aspects may be permitted. The same reference numerals in different drawings may identify the same or similar elements.

[0015] Figure 1 This is a diagram illustrating an example of a wireless network according to this disclosure.

[0016] Figure 2 This is a diagram illustrating an example of communication between a base station and a user equipment (UE) in a wireless network according to this disclosure.

[0017] Figure 3 This is a diagram illustrating an example of sidelink communication according to this disclosure.

[0018] Figure 4 This is a diagram illustrating examples of sidelink communication and access link communication according to this disclosure.

[0019] Figure 5 This is a diagram illustrating an example of resource reservation on a sidelink channel according to this disclosure.

[0020] Figure 6 This is a diagram illustrating an example of symbol allocation within a time slot on a sidelink channel according to this disclosure.

[0021] Figure 7 This is a diagram illustrating an example of resource reservation for first transmission, retransmission, and final transmission according to this disclosure.

[0022] Figure 8 , 9 Figures 1 and 10 are diagrams illustrating examples of reusable sidelink resources according to this disclosure.

[0023] Figure 11 This is a diagram illustrating an example process associated with reusing sidelink resources according to this disclosure.

[0024] Figure 12 and 13 This is a diagram of an example device for wireless communication according to the present disclosure. Detailed Implementation

[0025] Various aspects of this disclosure will be described more fully below with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to any particular structure or function presented throughout this disclosure. Rather, these aspects are provided precisely to make this disclosure detailed and complete, and to fully convey the scope of this disclosure to those skilled in the art. Those skilled in the art will understand that the scope of this disclosure is intended to cover any aspect of the disclosure herein, whether implemented independently of or in combination with any other aspect of this disclosure. For example, any number of the aspects set forth herein may be used to implement an apparatus or method of practice. Furthermore, the scope of the disclosure is intended to cover apparatus or methods practiced using structures, functions, or structures and functions additional to or other than the various aspects of the disclosure set forth herein. It should be understood that any aspect of this disclosure may be embodied by one or more elements of the claims.

[0026] Various devices and techniques will now be used to illustrate several aspects of a telecommunications system. These devices and techniques will be described in the following detailed description and are illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively, “elements”). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0027] While the aspects may be described using terms commonly associated with 5G or New Radio (NR) Radio Access Technology (RAT), the aspects of this disclosure may be applied to other RATs, such as 3G RAT, 4G RAT, and / or RATs after 5G (e.g., 6G).

[0028] Figure 1This is a diagram illustrating an example of a wireless network 100 according to this disclosure. Wireless network 100 may be or may include elements of a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, etc. Wireless network 100 may include one or more base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d), user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other network entities. Base station 110 is the entity communicating with UE 120. Base station 110 (sometimes referred to as BS) may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, and / or a Transmit / Receive Point (TRP). Each base station 110 may provide communication coverage for a specific geographic area. In the 3rd Generation Partnership Project (3GPP), the term "cell" can refer to the coverage area of ​​base station 110 and / or the base station subsystem serving that coverage area, depending on the context in which the term is used.

[0029] Base station 110 can provide communication coverage for macro cells, pico cells, femtocells, and / or another type of cell. A macro cell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access for UE 120 with a service subscription. A pico cell can cover a relatively small geographic area and can allow unrestricted access for UE 120 with a service subscription. A femtocell can cover a relatively small geographic area (e.g., a home) and can allow limited access for UE 120 associated with the femtocell (e.g., UE 120 in a Closed Subscriber Group (CSG)). Base station 110 for macro cells can be referred to as a macro base station. Base station 110 for pico cells can be referred to as a pico base station. Base station 110 for femtocells can be referred to as a femtocell or a home base station. Figure 1 In the example shown, BS 110a can be a macro base station for macro cell 102a, BS 110b can be a pico base station for pico cell 102b, and BS 110c can be a femto base station for femto cell 102c. A base station can support one or more (e.g., three) cells.

[0030] In some examples, the cell may not be fixed, and the geographical area of ​​the cell may move depending on the location of the mobile base station 110 (e.g., a mobile base station). In some examples, base station 110 may be interconnected with each other and / or with one or more other base stations 110 or network nodes (not shown) in the wireless network 100 using any suitable transport network, through various types of backhaul interfaces (such as direct physical connections or virtual networks).

[0031] Wireless network 100 may include one or more relay stations. A relay station is an entity that can receive data transmissions from an upstream station (e.g., base station 110 or UE 120) and send data transmissions to a downstream station (e.g., UE 120 or base station 110). A relay station may be UE 120, which can relay transmissions for other UEs 120. Figure 1 In the example shown, BS 110d (e.g., a relay base station) can communicate with BS 110a (e.g., a macro base station) and UE 120d to facilitate communication between BS 110a and UE 120d. The base station 110 relaying the communication can be referred to as a relay station, relay base station, relay, etc.

[0032] Wireless network 100 can be a heterogeneous network comprising different types of base stations 110 (such as macro base stations, pico base stations, femto base stations, relay base stations, etc.). These different types of base stations 110 may have different transmit power levels, different coverage areas, and / or different effects on interference in wireless network 100. For example, macro base stations may have high transmit power levels (e.g., 5 to 40 watts), while pico base stations, femto base stations, and relay base stations may have lower transmit power levels (e.g., 0.1 to 2 watts).

[0033] Network controller 130 may be coupled to or communicate with a set of base stations 110, and may provide coordination and control for these base stations 110. Network controller 130 may communicate with base stations 110 via backhaul communication links. Base stations 110 may communicate with each other directly or indirectly via wireless or wired backhaul communication links.

[0034] UE 120 may be distributed throughout the wireless network 100, and each UE 120 may be fixed or mobile. UE 120 may include, for example, access terminals, terminals, mobile stations, and / or subscriber units. UE 120 may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smartwatch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), an in-vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a GPS device, and / or any other suitable device configured to communicate via a wireless medium.

[0035] Some UEs 120 may be considered machine-type communication (MTC) UEs, or evolved or enhanced machine-type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags capable of communicating with base stations, another device (e.g., remote devices), or certain other entities. Some UEs 120 may be considered Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (Narrowband IoT) devices. Some UEs 120 may be considered customer premises equipment. UE 120 may be included within a housing that houses the components of UE 120, such as processor components and / or memory components. In some examples, the processor components and memory components may be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0036] Typically, any number of wireless networks 100 can be deployed in a given geographical area. Each wireless network 100 can support a specific RAT and can operate on one or more frequencies. A RAT can be referred to as a radio technology, air interface, etc. A frequency can be referred to as a carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0037] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary for communication with each other). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0038] Devices in Wireless Network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc., by frequency or wavelength. For example, devices in Wireless Network 100 can communicate using one or more operating bands. In 5G NR, two initial operating bands have been designated as frequency range names FR1 (410MHz–7.125GHz) and FR2 (24.25GHz–52.6GHz). It should be understood that although a portion of FR1 is greater than 6GHz, FR1 is often (interchangeably) referred to as the “sub-6GHz” band in various documents and articles. Similar naming issues sometimes arise regarding FR2, which, although different from the Extremely High Frequency (EHF) band (30GHz–300GHz) designated as a “millimeter wave” band by the International Telecommunication Union (ITU), is often (interchangeably) referred to as the “millimeter wave” band in documents and articles.

[0039] The frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR studies have designated the operating band for these mid-band frequencies as the frequency range name FR3 (7.125 GHz – 24.25 GHz). Bands belonging to FR3 can inherit FR1 and / or FR2 characteristics, and thus can effectively extend the features of FR1 and / or FR2 to mid-band frequencies. Additionally, higher frequency bands are currently being explored to extend 5G NR operation above 52.6 GHz. For example, three higher operating frequency bands have been designated as the frequency range names FR4a or FR4-1 (52.6 GHz – 71 GHz), FR4 (52.6 GHz – 114.25 GHz), and FR5 (114.25 GHz – 300 GHz). Each of these higher frequency bands belongs to the EHF band.

[0040] Considering the examples above, unless otherwise specified, it should be understood that the terms "below 6 GHz," etc., if used herein, can broadly refer to frequencies that may be less than 6 GHz, may be within FR1, or may include midband frequencies. Furthermore, unless otherwise specified, it should be understood that the terms "millimeter wave," etc., if used herein, can broadly refer to frequencies that may include midband frequencies, may be within FR2, FR4, FR4-a or FR4-1 and / or FR5, or may be within the EHF band. It is anticipated that frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0041] As mentioned above, Figure 1 This is provided as an example. Other examples may differ from the one provided. Figure 1 Example of the description.

[0042] Figure 2 This is a diagram illustrating an example 200 of communication between base station 110 and UE 120 in wireless network 100 according to the present disclosure. Base station 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1).

[0043] At base station 110, transmitting processor 220 can receive data from data source 212 intended for use by UE 120 (or a set of UEs 120). Transmitting processor 220 can select one or more modulation and decoding schemes (MCS) for UE 120, at least in part, based on one or more Channel Quality Indicators (CQIs) received from UE 120. Base station 110 can process (e.g., encode and modulate) the data for UE 120, at least in part, based on the MCS selected for UE 120, and can provide data symbols for UE 120. Transmitting processor 220 can process system information (e.g., for Semi-Static Resource Partition Information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper-layer signaling), and provide overhead symbols and control symbols. Transmitting processor 220 can generate reference symbols for reference signals (e.g., Cell-Specific Reference Signal (CRS) or Demodulation Reference Signal (DMRS)) and synchronization signals (e.g., Primary Synchronization Signal (PSS) or Secondary Synchronization Signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and can provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a to 232t). For example, each output symbol stream can be provided to a modulator component (shown as MOD) of modem 232. Each modem 232 can use a corresponding modulator component to process the corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modem 232 can also use a corresponding modulator component to process (e.g., convert to analog, amplify, filter, and / or upconvert) the output sample stream to obtain a downlink signal. Modems 232a to 232t can transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a to 234t).

[0044] At UE 120, an array of antennas 252 (shown as antennas 252a to 252r) can receive downlink signals from base station 110 and / or other base stations 110, and can provide an array of received signals (e.g., R received signals) to an array of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal can be provided to a demodulator component (shown as DEMOD) of modem 254. Each modem 254 can use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain an input sample. Each modem 254 can use the demodulator component to further process the input sample (e.g., for OFDM) to obtain a received symbol. MIMO detector 256 can obtain the received symbols from modem 254, perform MIMO detection on the received symbols where applicable, and provide the detected symbols. The receiver processor 258 can process (e.g., demodulate and decode) detected symbols, provide decoded data for UE 120 to the data sink 260, and provide decoded control and system information to the controller / processor 280. The term "controller / processor" can refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine Reference Signal Received Power (RSRP) parameters, Received Signal Strength Indicator (RSSI) parameters, Reference Signal Received Quality (RSRQ) parameters, and / or CQI parameters, etc. In some examples, one or more components of UE 120 may be included in the housing 284.

[0045] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, such as those in a core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0046] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included in the following: one or more antenna panels, one or more antenna groups, one or more antenna element sets, and / or one or more antenna arrays, etc. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements (within a single housing or multiple housings), coplanar antenna element sets, non-coplanar antenna element sets, and / or coupled to one or more transmitting and / or receiving components (such as...) Figure 2 One or more antenna elements (one or more components).

[0047] On the uplink, at UE 120, transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., reports including RSRP, RSSI, RSRQ, and / or CQI). Transmit processor 264 can generate reference symbols for one or more reference signals. Symbols from transmit processor 264 can be pre-encoded by TX MIMO processor 266 where applicable, further processed by modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some examples, modem 254 of UE 120 may include modulator and demodulator. In some examples, UE 120 includes a transceiver. The transceiver may include any combination of antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or TX MIMO processor 266. The transceiver can be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., references). Figure 8-13 ).

[0048] At base station 110, uplink signals from UE 120 and / or other UEs can be received by antenna 234, processed by modem 232 (e.g., demodulator component of modem 232, shown as DEMOD), detected by MIMO detector 236 where applicable, and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 can provide decoded data to data sink 239 and decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communication. In some examples, modem 232 of base station 110 may include modulator and demodulator. In some examples, base station 110 includes transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., references...). Figure 8-13 ).

[0049] As described in more detail elsewhere herein, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2Any other component may perform one or more techniques associated with reusing sidelink resources. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component can execute or direct, for example Figure 11 The operation of process 1100 and / or other processes as described herein. Memory 242 and memory 282 may store data and program code for base station 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, one or more instructions, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly, or after compilation, transformation, and / or interpretation), may cause one or more processors, UE 120, and / or base station 110 to perform or direct, for example... Figure 11 The operation of process 1100 and / or other processes as described herein. In some examples, execution instructions may include run instructions, transform instructions, compile instructions, and / or interpret instructions, etc.

[0050] In some aspects, the first UE (e.g., UE 120a) includes components for receiving first control information associated with a first set of reserved resources on a sidelink channel from at least one second UE (e.g., UE 120e); components for attempting to decode additional control information based at least in part on the first control information; and / or components for transmitting a message using the first set of reserved resources based at least in part on the failure to decode the additional control information. Components for the first UE to perform the operations described herein may include one or more of, for example, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller / processor 280, or memory 282.

[0051] Although Figure 2 The boxes in the diagram are shown as different components, but the functions described above with respect to these boxes can be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functions described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 can be performed by or under the control of the controller / processor 280.

[0052] As mentioned above, Figure 2 This is provided as an example. Other examples may differ from the one provided. Figure 2 Example of the description.

[0053] Figure 3This is a diagram illustrating example 300 of sidelink communication according to this disclosure. Figure 3 As shown, the first UE 305-1 can communicate with the second UE 305-2 (and one or more other UEs 305) via one or more sidelink channels 310. UEs 305-1 and 305-2 can use one or more sidelink channels 310 to communicate for P2P communication, D2D communication, V2X communication (e.g., which may include V2V communication, V2I communication, and / or V2P communication) and / or mesh networking. In some aspects, UEs 305 (e.g., UEs 305-1 and / or UEs 305-2) may correspond to one or more other UEs described elsewhere herein, such as UE 120. In some aspects, one or more sidelink channels 310 may use a PC5 interface and / or may operate in a high-frequency band (e.g., the 5.9 GHz band). Additionally or alternatively, UEs 305 may use Global Navigation Satellite System (GNSS) timing to synchronize the timing of transmission time intervals (TTIs) (e.g., frames, subframes, time slots, or symbols).

[0054] like Figure 3 As further shown, one or more sidelink channels 310 may include a Physical Sidelink Control Channel (PSCCH) 315, a Physical Sidelink Shared Channel (PSSCH) 320, and / or a Physical Sidelink Feedback Channel (PSFCH) 325. Similar to the Physical Downlink Control Channel (PDCCH) and / or Physical Uplink Control Channel (PUCCH) used for cellular communication with base station 110 via an access link or access channel, PSCCH 315 can be used for communication control information. Similar to the Physical Downlink Shared Channel (PDSCH) and / or Physical Uplink Shared Channel (PUSCH) used for cellular communication with base station 110 via an access link or access channel, PSSCH 320 can be used for communication data. For example, PSCCH 315 may carry Sidelink Control Information (SCI) 330, which may indicate various control information for sidelink communication, such as one or more resources (e.g., time resources, frequency resources, and / or spatial resources) of transport block (TB) 335 that may be carried on PSSCH 320. TB 335 may include data. PSFCH 325 may be used for communication-side link feedback 340, such as Hybrid Automatic Repeat Request (HARQ) feedback (e.g., Acknowledgment or Negative Acknowledgment (ACK / NACK) information), Transmit Power Control (TPC), and / or Schedule Request (SR).

[0055] Although shown on PSCCH 315, SCI 330 may, in some respects, include multiple communications at different stages, such as a first-stage SCI (SCI-1) and a second-stage SCI (SCI-2). SCI-1 may be transmitted on PSCCH 315. SCI-2 may be transmitted on PSSCH 320. SCI-1 may include, for example, indications of one or more resources on PSSCH 320 (e.g., time resources, frequency resources, and / or spatial resources), information for decoding sidelink communications on PSSCH, Quality of Service (QoS) priority values, resource reservation periods, PSSCH DMRS patterns, SCI formats for SCI-2, beta offsets for SCI-2, quantities of PSSCH DMRS ports, and / or MCS. SCI-2 may include information associated with data transmission on PSSCH 320, such as HARQ procedure ID, New Data Indicator (NDI), source identifier, destination identifier, and / or Channel State Information (CSI) report triggers.

[0056] In some aspects, one or more sidelink channels 310 may use a resource pool. For example, a scheduling assignment may be transmitted across time using a specific resource block (RB) in a subchannel (e.g., included in SCI 330). In some aspects, data transmissions associated with a scheduling assignment (e.g., on PSSCH 320) may occupy adjacent RBs in the same subframe as the scheduling assignment (e.g., using frequency division multiplexing). In some aspects, the scheduling assignment and associated data transmissions are not transmitted on adjacent RBs.

[0057] In some aspects, UE 305 may operate using a transmission mode in which resource selection and / or scheduling are performed by UE 305 (e.g., not base station 110). In some aspects, UE 305 may perform resource selection and / or scheduling by sensing the availability of channels for transmission. For example, UE 305 may measure RSSI parameters (e.g., sidelink-RSSI (S-RSSI) parameters) associated with various sidelink channels, may measure RSRP parameters (e.g., PSSCH-RSRP parameters) associated with various sidelink channels, and / or may measure RSRQ parameters (e.g., PSSCH-RSRQ parameters) associated with various sidelink channels, and may select channels for transmitting sidelink communications based at least in part on these measurements.

[0058] Alternatively or additionally, UE 305 may use SCI 330 received in PSCCH 315 to perform resource selection and / or scheduling, SCI 330 may indicate occupied resources and / or channel parameters. Alternatively or additionally, UE 305 may perform resource selection and / or scheduling by determining the Channel Busy Rate (CBR) associated with various sidelink channels, which may be used for rate control (e.g., by indicating the maximum number of resource blocks available to UE 305 for a particular set of subframes).

[0059] In a transmission mode where resource selection and / or scheduling are performed by UE 305, UE 305 can generate sidelink grants and can transmit grants in SCI 330. Sidelink grants can indicate one or more parameters (e.g., transmission parameters) to be used for upcoming sidelink transmissions, such as one or more resource blocks to be used for upcoming sidelink transmissions on PSSCH 320 (e.g., for TB 335), one or more subframes to be used for upcoming sidelink transmissions, and / or MCS to be used for upcoming sidelink transmissions. In some aspects, UE 305 can generate sidelink grants indicating one or more parameters (such as the periodicity of sidelink transmissions) for semi-persistent scheduling (SPS). Additionally or alternatively, UE 305 can generate sidelink grants for event-driven scheduling (such as for on-demand sidelink messages).

[0060] As mentioned above, Figure 3 This is provided as an example. Other examples may differ from the one provided. Figure 3 The example described.

[0061] Figure 4 This is a diagram illustrating example 400 of sidelink communication and access link communication according to this disclosure. Figure 4 As shown, in combination Figure 3 As described, transmitter (Tx) / receiver (Rx) UE 405 and Rx / Tx UE 410 can communicate with each other via a sidelink. As further shown, in some sidelink modes, base station 110 can communicate with Tx / Rx UE 405 via a first access link. Additionally or alternatively, in some sidelink modes, base station 110 can communicate with Rx / Tx UE 410 via a second access link. Tx / Rx UE 405 and / or Rx / Tx UE 410 may correspond to one or more UEs described elsewhere herein, such as... Figure 1UE 120. Therefore, the direct link between UE 120 (e.g., via the PC5 interface) can be referred to as a side link, and the direct link between base station 110 and UE 120 (e.g., via the Uu interface) can be referred to as an access link. Side link communication can be transmitted via the side link, and access link communication can be transmitted via the access link. Access link communication can be downlink communication (from base station 110 to UE 120) or uplink communication (from UE 120 to base station 110).

[0062] As mentioned above, Figure 4 This is provided as an example. Other examples may differ from the one provided. Figure 4 Example of the description.

[0063] Figure 5 This is a diagram illustrating an example 500 of resource reservation on a sidelink channel according to the present disclosure. In example 500, a UE (e.g., UE 120) on the sidelink channel may use SCI 510 to reserve resources in time and / or frequency. In some aspects, the reservation may be periodic (e.g., repeated once per time period 505). For example, UE 120 may send a first-stage SCI (SCI-1, also referred to as SCI0_1) in each time period 505 to reserve symbols 515a and 515b. In some aspects, the reservation may expire after several time periods.

[0064] As mentioned above, Figure 5 This is provided as an example. Other examples may differ from the one provided. Figure 5 Example of the description.

[0065] Figure 6 This is a diagram illustrating example 600 of symbol allocation within a time slot on a sidelink channel according to this disclosure. In example 600, for the sidelink channel (e.g., as combined with...) Figure 3 The time slots of the described channel 310 can be allocated for different communications. As used herein, "time slot" can refer to a portion of a radio frame within an LTE, 5G, or other wireless communication architecture. In some respects, a time slot may include one or more symbols. Furthermore, "symbol" can refer to an OFDM symbol or other similar symbol within a time slot.

[0066] like Figure 6As shown, the first symbol 601 (also referred to as symbol 0) can be reserved (e.g., for a cyclic prefix). Additionally, certain symbols (e.g., symbol 603 in example 600) can be divided into control channels (e.g., PSCCH) and data channels (e.g., PSSCH). Accordingly, in example 600, one sub-channel is assigned to PSCCH and one sub-channel is assigned to PSSCH. Other examples may include additional sub-channels for PSCCH and / or additional sub-channels for PSSCH.

[0067] like Figure 6 As further shown, certain symbols (e.g., symbol 605 in example 600) may be assigned to the feedback channel (PSFCH). In some aspects, the feedback channel may include a preamble symbol (e.g., symbol 607 in example 600) and / or a trailing symbol (e.g., symbol 609 in example 600) reserved as a gap between the data channel and the feedback channel. Remaining symbols (e.g., symbol 611 in example 600) may also be assigned to the data channel (e.g., PSSCH).

[0068] As mentioned above, Figure 6 This is provided as an example. Other examples may differ from the one provided. Figure 6 Example of the description.

[0069] Figure 7 This is a diagram illustrating example 700 of resource reservation for first transmission, retransmission, and final transmission according to this disclosure. In example 700, a UE (e.g., UE 120) may transmit an SCI (e.g., SCI1) to reserve a sidelink channel (e.g., as combined with...). Figure 3 Resources on channel 310 described (e.g., as combined with) Figure 6 As described, one or more symbols within one or more sub-channels used for PSSCH).

[0070] As shown in reference numeral 701, SCI1 can reserve resources with a larger propagation distance R1 compared to the resources used for the first transmission (which may have a smaller propagation distance R2). For example, SCI1 can reserve more resources along the frequency dimension, time dimension, and / or physical distance dimension compared to the resources used for the first transmission. For example, SCI1 can be reliably decoded within the propagation distance R1, so that the neighboring UE decoding SCI1 is aware of the reserved resources. The first transmission is then scheduled by SCI2, which can be reliably decoded within the propagation distance R2. To avoid interference with neighboring UEs that cannot decode SCI1, the propagation distance R2 can be smaller than the propagation distance R1.

[0071] Similarly, as shown in reference numeral 703, UE 120 may use a large portion of the reserved resources for retransmission, but as shown in reference numeral 705, this portion is still smaller than the portion of the reserved resources used for final transmission. Accordingly, the portion of the reserved resources used on the sidelink channel can vary depending on when UE 120 transmits (e.g., whether it is a first transmission, a retransmission, or a final transmission).

[0072] As mentioned above, Figure 7 This is provided as an example. Other examples may differ from the one provided. Figure 7 Example of the description.

[0073] In some situations, a UE may not reuse resources reserved on the sidelink channel by one or more other UEs (e.g., using SCI1). However, not all reserved resources are used by one or more other UEs (e.g., as in combination with...). Figure 7 (As described). Accordingly, the spectral efficiency on the sidelink channel will decrease.

[0074] The techniques and apparatus described herein allow a UE (e.g., UE 120a) to reuse a sidelink channel (e.g., as combined with) another UE (e.g., UE 120b). Figure 3 Resources are reserved on the described channel 310. Accordingly, UE 120a and UE 120b improve spectral efficiency on the sidelink channel. The increased spectral efficiency results in increased reliability and / or quality of communication on the sidelink channel. Furthermore, UE 120a can reuse resources without interfering with the first transmission, retransmission, or final transmission of UE 120b. Reduced interference allows UEs on the sidelink channel to conserve power and processing resources by reducing the probability that UEs must perform retransmissions.

[0075] Figure 8 This is a diagram illustrating example 800 associated with reused sidelink resources according to this disclosure. Figure 8 As shown, Example 800 includes a first set of reserved resources 801 reserved via an SCI (e.g., SCI 0_1). For example, a first UE 120a can decode an SCI sent by at least one other UE (e.g., UE 120b) that is reserved in resource 801. In some aspects, UE 120a, UE 120b, and other UEs can be included in a wireless network (such as wireless network 100). UE 120a, UE 120b, and other UEs can be in a sidelink channel (e.g., as combined with...) Figure 3 Communication takes place on channel 310 described below. Although the following description focuses on the first UE 120a and the second UE 120b, the description also applies similarly when the first UE 120a receives SCI from multiple second UEs.

[0076] Accordingly, in some aspects, the first UE 120a can receive first control information (e.g., SCI 0_1) associated with the first reserved resource set 801 on the sidelink channel from the second UE 120b. For example, as in combination Figure 7 As described, the second UE 120b can send first control information to reserve resources along frequency, time, and / or physical distance dimensions. In some aspects, the first UE 120a can identify the first reserved resource set 801 by decoding the first control information. For example, the first UE 120a can identify the first reserved resource set 801 using frequency domain resource allocation, time domain resource allocation, and / or resource reservation period, etc., decoded from the first control information.

[0077] In some aspects, the first UE 120a can also determine an unoccupied subset of resources within the first reserved resource set by failing to decode additional control information (e.g., second-stage SCI (SCI2)). For example, when the first UE 120a can decode the additional control information, the first UE 120a can mark the resource 803 (e.g., symbols, time slots, and / or sub-channels) in which the first UE 120a decoded the additional control information as occupied. Accordingly, the first UE 120a can attempt to reuse other resources within the first reserved resource set 801, rather than the resource in which the first UE 120a decoded the additional control information. Alternatively, even when the first UE 120a decodes the additional control information (e.g., SCI2), the first UE 120a can also determine the unoccupied subset of resources within the first reserved resource set 801 at least in part based on a first distance (e.g., as described below). Accordingly, as long as at least the first distance meets the condition (e.g., a threshold), the first UE 120a can attempt to reuse resources within the first reserved resource set 801.

[0078] like Figure 8 As further shown, the first UE 120a can determine a first distance (e.g., represented by d2 in Example 800) between the first UE 120a and the second UE 120b based on one or more resource dimensions. The first distance d2 can be along one or more resource dimensions (e.g., time, frequency, and / or spatial distance).

[0079] In some aspects, the first UE 120a may determine the distance d2 by measuring a reference signal (e.g., DMRS) associated with the first control information and determining a path loss estimate to the second UE 120b based at least in part on the measurement of the reference signal. For example, the reference signal may have been multiplexed with the first control information, or it may be transmitted using resources (e.g., symbols and / or frequencies) indicated by the first control information.

[0080] In some respects, and as Figure 8 As further shown, the first UE 120a can determine the coverage distance associated with the first reserved resource set 801 (e.g., represented by R1 in example 800) by at least partially decoding the first control information (e.g., determining the MCS of the first control information). For example, as described above, the first UE 120a can determine the coverage distance R1 at least in part based on one or more frequency domain resources, one or more time domain resources, MCS, and / or power measurements determined from the first control information. In some aspects, the first UE 120a can additionally or alternatively use at least in part the physical distance between the first UE 120a and the second UE 120b to determine the coverage distance. For example, a higher layer of the first UE 120a can determine the physical distance between the first UE 120a and the second UE 120b (e.g., using reference signal measurements and / or mobility signaling).

[0081] In some aspects, the first UE 120a may additionally determine the propagation distance associated with the first reserved resource set 801 (e.g., represented by R2 in example 800) based at least in part on information obtained by decoding the first control information. For example, the first UE 120a may estimate the propagation distance R2 based at least in part on the MCS and / or size of the data channel associated with the second UE 120b, as indicated by the first control information.

[0082] In some aspects, the first UE 120a may determine a first distance d2 based at least in part on an estimate of the interference between the data channel associated with the first UE 120a and the data channel associated with the second UE 120b using the first reserved resource set. Similarly, in some aspects, the first UE 120a may also determine a second distance (e.g., represented by d1 in Example 800) based on an estimate of the interference between the control channel associated with the first UE 120a and the control channel associated with the second UE 120b based on one or more resource dimensions, at least in part.

[0083] Based at least in part on decoding the first control information, the first UE 120a can use the first reserved resource set 801 to send messages. In some aspects, the first UE 120a can use a first transmission power based at least in part on a first distance to send messages. For example, the first UE 120a can determine the first transmission power such that the message will not interfere with the data channel (e.g., PSSCH) associated with the second UE 120b. In some aspects, the first UE 120a can also determine the transmission power based at least in part on a second distance. For example, the first UE 120a can determine the first transmission power such that the message will not propagate beyond the coverage distance associated with the first reserved resource set 801 (e.g., as combined with...). Figure 10 (As described).

[0084] In some respects, the first UE 120a may select one or more resources (e.g., symbols and / or sub-channels) for transmitting messages, at least in part, based on a first transmit power. For example, when the first transmit power is high, the first UE 120a may select one or more resources that are more distant in frequency and / or time from the data channel associated with the second UE 120b.

[0085] The first UE 120a may perform the determination of a first distance and / or a second distance for the first transmission, retransmission, and final transmission, respectively. For example, the first UE 120a may determine a third distance based on one or more resource dimensions, at least in part, an estimate of the interference between the data channel associated with the first UE 120 and the data channel associated with the second UE 120b used for retransmission. Accordingly, when transmission occurs within a time period associated with retransmission (e.g., rather than the first transmission), the first UE 120a may determine a second transmission power for transmitting the message based at least in part on the third distance rather than the first distance. In some aspects, the first UE 120a may also determine a fourth distance based at least in part on an estimate of the interference between the control channel associated with the first UE 120 and the control channel associated with the second UE 120b used for retransmission. Accordingly, the first UE 120a may determine a second transmission power based at least in part on the fourth distance rather than the second distance.

[0086] In some respects, the first UE 120a may not send messages within the first reserved resource set during the time period associated with the final transmission. For example, as in combination with Figure 7 As described, the final transmission may occupy most (if not all) of the first reserved resource set to achieve high reliability, such that the first UE 120a will determine the transmission power used to transmit the message during the time period associated with the final transmission to be zero.

[0087] By using combination Figure 8 The described technique involves the first UE 120a reusing resources reserved on the sidelink channel by the second UE 120b. Accordingly, the first UE 120a increases the spectral efficiency on the sidelink channel. Furthermore, by reusing resources reserved by the second UE 120b instead of reserving a new set of resources different from the first reserved resource set, the first UE 120a reduces network overhead and conserves processing resources.

[0088] As mentioned above, Figure 8 This is provided as an example. Other examples may differ from the one provided. Figure 8 Example of the description.

[0089] Figure 9 This is a diagram illustrating example 900 associated with reused sidelink resources according to this disclosure. Figure 9 As shown, Example 900 includes a first set of reserved resources 901 reserved via an SCI (e.g., SCI 0_1). For example, a first UE 120a can decode an SCI sent by at least one other UE (e.g., UE 120b) that is reserved on resource 901. In some aspects, UE 120a, UE 120b, and other UEs can be included in a wireless network (such as wireless network 100). UE 120a, UE 120b, and other UEs can be on a sidelink channel (e.g., as combined with...) Figure 3 Communication takes place on channel 310 described below. Although the following description focuses on the first UE 120a and the second UE 120b, the description also applies similarly when the first UE 120a receives SCI from multiple second UEs.

[0090] Similar to Figure 8 Examples 800 and 900 include: a first UE 120a determining a first distance (e.g., denoted by d2) based at least in part on an estimate of interference between a data channel associated with the first UE 120a and a data channel associated with the second UE 120b; determining a coverage distance (e.g., denoted by R1) associated with a first reserved resource set 901 by decoding first control information; determining a propagation distance (e.g., denoted by R2) associated with the first reserved resource set 901 based at least in part on information obtained by decoding the first control information; and / or determining a second distance (e.g., denoted by d1) based at least in part on an estimate of interference between a control channel associated with the first UE 120a and a control channel associated with the second UE 120b.

[0091] like Figure 9As shown, the first UE 120a can determine the resource 903 to be reused based at least in part on the first distance d2. In some aspects, when the first UE 120a is decoding first control information from a plurality of second UEs (and accordingly determining a plurality of first distances), the first UE 120a can select the resource 903 based at least in part on reducing one or more of the first distances.

[0092] Accordingly, the first UE 120a may send second control information (e.g., SCI1) associated with the first reserved resource set 901 before sending a message using resource 903. For example, the first UE 120a may reserve at least some of the reserved resources in the first reserved resource set that will be reused for sending messages. In some aspects, the second control information includes an indication from the second UE 120b that the first reserved resource set 901 has been reused. For example, the second control information may include fields and / or bits indicating that resource 903 has been reused.

[0093] In some aspects, the first UE 120a may transmit the second control information on a different subchannel than the subchannel used to receive the first control information. Accordingly, the first UE 120a may reuse resources 903 that at least exclude the subchannel used to receive the first control information.

[0094] Typically, SCI1 is transmitted on the lowest sub-channel within the resource set reserved by SCI1. However, in some aspects, the first UE 120a may transmit the second control information on a sub-channel different from the first sub-channel within the first reserved resource set 901, such that the first UE 120a does not exclude the reuse of the sub-channel used to receive the first control information. Accordingly, the first UE 120a may include an indication of the first sub-channel in the second control information. For example, the first UE 120a may receive the first control information on sub-channel 1 and subsequently transmit the second control information on sub-channel 2, but include an indication that sub-channel 1 is also (at least partially) reserved by the second control information. Additionally or alternatively, the first UE 120a may transmit the second control information on a sub-channel different from the first sub-channel within the first reserved resource set 901, selected using one or more rules. Accordingly, the first UE 120a may not include an indication of the first sub-channel in the second control information. For example, when stored rules (e.g., programmed and / or otherwise pre-configured in first UE 120a, second UE 120b, and other UEs) indicate that control information can be included in any sub-channel in which modulo-2 remainder zero, first UE 120a can receive first control information on sub-channel 2 and subsequently transmit second control information on sub-channel 4. Other examples may include different rules (e.g., only the lowest and second lowest sub-channels may include control information). In some aspects, the rules for receiving from a base station (e.g., base station 110) can be configured using Radio Resource Control (RRC).

[0095] Alternatively, the first UE 120a may transmit the second control information on the same subchannel used to receive the first control information. Accordingly, at least some content of the second control information is copied from the first control information to avoid interference. For example, the first UE 120a may use the same priority, the same format for appending control information (e.g., SCI2), and / or the same DMRS style as the second UE 120b.

[0096] like Figure 9 As further shown, the first UE 120a may alternatively determine the resource 905 to be reused based at least in part on the first distance d2 and the second distance d1. In some aspects, when the first UE 120a is decoding first control information from a plurality of second UEs (and accordingly determining a plurality of first distances), the first UE 120a may select the resource 905 based at least in part on reducing one or more of the first distance and the second distance.

[0097] In some respects, the first UE 120a may suppress the transmission of control information (e.g., SCI1). For example, by including resource 905 in the first reserved resource set 901, the first UE 120a may use the first control information to reserve resource 905 and directly jump to transmitting additional control information (e.g., SCI2) at least in part based on the first control information.

[0098] The first UE 120a may reserve different portions of the first reserved resource set (e.g., resource 903 and / or resource 905) for the first transmission, retransmission, and final transmission, respectively. In one example, when transmitting during the time period associated with the first transmission, the first UE 120a may determine the resource 903 to be reused based at least in part on a first distance d2, and when transmitting during the time period associated with a retransmission, the first UE 120a may determine the resource 905 to be reused based at least in part on a first distance d2 and a second distance d1. In another example, when transmitting during the time period associated with the first transmission, the first UE 120a may determine the resource 905 to be reused based at least in part on a first distance d2 and a second distance d1, and when transmitting during the time period associated with a retransmission, the first UE 120a may determine the resource 903 to be reused based at least in part on a first distance d2.

[0099] Additionally or alternatively, the first UE 120a may transmit second control information for reserving resources associated with the first transmission and suppress the transmission of second control information for reserving resources associated with retransmission. Similarly, the first UE 120a may suppress the transmission of second control information for reserving resources associated with the first transmission and transmit second control information for reserving resources associated with retransmission. Additionally or alternatively, the second control information may differ when reserving resources associated with the first transmission compared to reserving resources associated with retransmission. In one example, the first UE 120a may transmit the second control information for reserving resources associated with the first transmission on the same subchannel as the channel used to receive the first control information, and transmit the second control information for reserving resources associated with retransmission on a different subchannel than the channel used to receive the first control information.

[0100] In some respects, the first UE 120a may not reuse resources within the first reserved resource set during the time period associated with the final transmission. For example, as in combination with Figure 8 As described, the first UE 120a may determine the transmit power used for transmission during the time period associated with the final transmission to be zero. Additionally or alternatively, the first UE 120a may determine the portion of the first reserved resource set to be reused for transmission during the time period associated with the final transmission to be empty or zero.

[0101] Examples 800 and 900 can be combined. For example, the first UE 120a can determine which resources to reuse (e.g., resource 903 and / or resource 905) and the transmission power used for those resources. As described above, the first UE 120a can determine which resources to reuse and the transmission power used for reuse for the first transmission, retransmission, and final transmission, respectively.

[0102] By using combination Figure 9 The described technique involves the first UE 120a reusing resources reserved on the sidelink channel by the second UE 120b. Accordingly, the first UE 120a increases the spectral efficiency on the sidelink channel. Furthermore, by reusing resources reserved by the second UE 120b instead of reserving a new set of resources different from the first reserved resource set, the first UE 120a reduces network overhead and saves processing resources. In some aspects, by reusing first control information transmitted by the second UE 120b instead of encoding and transmitting new control information, the first UE 120a can also save signaling overhead.

[0103] As mentioned above, Figure 9 This is provided as an example. Other examples may differ from the one provided. Figure 9 Example of the description.

[0104] Figure 10 This is a diagram illustrating an example 1000 associated with reused sidelink resources according to this disclosure. (See diagram for example.) Figure 10 As shown, Example 1000 includes a first set of reserved resources 1001 reserved by an SCI (e.g., SCI 0_1) and a second set of reserved resources 1003 reserved by an SCI (e.g., SCI0_1). For example, a first UE 120a can decode an SCI sent by at least one other UE (e.g., second UE 120b and third UE 120c in Example 1000) with reserved resources 1001. In some aspects, UE 120a, multiple second UEs, and other UEs can be included in a wireless network (such as wireless network 100). UE 120a, second UE 120b, third UE 120c, and other UEs can be on a sidelink channel (e.g., as combined with...) Figure 3 Communication is carried out on the described channel 310.

[0105] like Figure 10 As shown, and similar to Figure 8Examples 800 and 1000 include: a first UE 120a determining a first distance (e.g., denoted by d2) based at least in part on an estimate of interference between a data channel associated with the first UE 120a and a data channel associated with the second UE 120b; determining a coverage distance (e.g., denoted by R1) associated with a first reserved resource set 1001 by decoding first control information; determining a propagation distance (e.g., denoted by R2) associated with the first reserved resource set 1001 based at least in part on information obtained by decoding the first control information; and / or determining a second distance (e.g., denoted by d1) based at least in part on an estimate of interference between a control channel associated with the first UE 120a and a control channel associated with the second UE 120b. Additionally, the first UE 120a may determine a first distance (e.g., denoted by d2) at least in part based on an estimate of the interference between the data channel associated with the first UE 120a and the data channel associated with the third UE 120c; determine a coverage distance associated with the second reserved resource set 1003 (e.g., denoted by R1) by decoding the second control information; determine a propagation distance associated with the second reserved resource set 1003 (e.g., denoted by R2) at least in part based on information obtained by decoding the second control information; and / or determine a second distance (e.g., denoted by d1) at least in part based on an estimate of the interference between the control channel associated with the first UE 120a and the control channel associated with the third UE 120c.

[0106] like Figure 10 As shown, and as combined Figure 9 As described, the first UE 120a may determine the resource 1005 to be reused based at least in part on a first distance d2 associated with the second UE 120b, a second distance d1 associated with the second UE 120b, a first distance d2 associated with the third UE 120c, and a second distance d1 associated with the third UE 120c. In some aspects, the first UE 120a may select the resource 1005 based at least in part on reducing one or more of the first distance d2 and the second distance d1.

[0107] Accordingly, such as combining Figure 9 As described, the first UE 120a may send new control information (e.g., SCI1) associated with the first reserved resource set 1001 before sending a message on resource 1005. Alternatively, and in combination with... Figure 9As described, the first UE 120a can suppress the transmission of new control information (e.g., SCI1). For example, by including resource 1005 within the first reserved resource set 1001, the first UE 120a can use the first control information and / or the second control information and directly jump to transmitting additional control information (e.g., SCI2) based at least in part on the first control information and / or the second control information.

[0108] The first UE 120a can reserve different portions (e.g., resource 1005) of the first reserved resource set 1001 for the first transmission, retransmission, and final transmission, respectively. In one example, when transmitting during the time period associated with the first transmission, the first UE 120a can determine the resource 1005 to be reused based at least in part on a first distance d2 and a second distance d1, and when transmitting during the time period associated with a retransmission, the first UE 120a can determine the different resource to be reused based at least in part on the first distance d2. In another example, when transmitting during the time period associated with the first transmission, the first UE 120a can determine the resource to be reused based at least in part on the first distance d2, and when transmitting during the time period associated with a retransmission, the first UE 120a can determine the resource 1005 to be reused based at least in part on the first distance d2 and the second distance d1.

[0109] Additionally or alternatively, the first UE 120a may transmit new control information for reserving resources associated with the first transmission and suppress the transmission of new control information for reserving resources associated with retransmission. Similarly, the first UE 120a may suppress the transmission of new control information for reserving resources associated with the first transmission and transmit new control information for reserving resources associated with retransmission. Additionally or alternatively, the new control information may differ when the first UE 120a reserves resources associated with the first transmission compared to reserving resources associated with retransmission. In one example, the first UE 120a may transmit new control information for reserving resources associated with the first transmission on the same sub-channel as used to receive the first control information and / or the second control information, and may also transmit new control information for reserving resources associated with retransmission on a different sub-channel than used to receive the first control information and / or the second control information.

[0110] In some respects, the first UE 120a may not reuse resources within the first reserved resource set during the time period associated with the final transmission. For example, as in combination with Figure 8As described, the first UE 120a may determine the transmit power used for transmission during the time period associated with the final transmission to be zero. Additionally or alternatively, the first UE 120a may determine the portion of the first reserved resource set to be reused for transmission during the time period associated with the final transmission to be empty or zero.

[0111] Examples 800 and 1000 can be combined. For example, the first UE 120a can determine which resources to reuse (e.g., resource 1005) and the transmission power used for those resources. As described above, the first UE 120a can determine which resources to reuse and the transmission power used for reuse for the first transmission, retransmission, and final transmission, respectively.

[0112] By using combination Figure 10 The described technique involves the first UE 120a reusing resources reserved on the sidelink channel by multiple second UEs. Accordingly, the first UE 120a increases the spectral efficiency on the sidelink channel. Furthermore, by reusing resources reserved by multiple second UEs instead of reserving a new set of resources different from the first reserved resource set, the first UE 120a reduces network overhead and saves processing resources. In some aspects, the first UE 120a also saves signaling overhead by reusing first control information transmitted by one or more of the second UEs instead of encoding and transmitting new control information.

[0113] As mentioned above, Figure 10 This is provided as an example. Other examples may differ from the one provided. Figure 10 Example of the description.

[0114] Figure 11 This is a diagram illustrating an example process 1100 performed, for example, by a first UE according to this disclosure. Example process 1100 is where the UE (e.g., Figure 12 Examples of operations performed by UE 120 and / or device 1200 that are associated with reusing sidelink resources.

[0115] like Figure 11 As shown, in some aspects, process 1100 may include receiving first control information (block 1110) associated with a first set of reserved resources on a sidelink channel from at least one second UE (e.g., another UE 120 and / or another device 1200). For example, as described herein, the first UE (e.g., using...) Figure 12 The receiving component 1202 depicted in the figure can receive first control information associated with a first set of reserved resources on a sidelink channel from at least one second UE.

[0116] like Figure 11As further shown, in some aspects, process 1100 may include attempting to decode additional control information based at least in part on the first control information (block 1120). For example, as described herein, a first UE (e.g., using receiving component 1202) may attempt to decode additional control information based at least in part on the first control information.

[0117] like Figure 11 As further shown, in some aspects, process 1100 may include sending a message using a first set of reserved resources at least in part based on the failure to decode additional control information (block 1130). For example, as described herein, the UE (e.g., using transmission component 1204) may use the first set of reserved resources to send a message at least in part based on the failure to decode additional control information.

[0118] Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other process descriptions elsewhere herein.

[0119] In the first aspect, the first control information includes SCI.

[0120] In the second aspect, either alone or in combination with the first aspect, process 1100 also includes determining, at least in part, based on the failure to decode additional control information (e.g., using...). Figure 12 The unoccupied subset of resources within the first reserved resource set (as depicted in component 1208).

[0121] In the third aspect, either alone or in combination with one or more of the first and second aspects, process 1100 further includes determining (e.g., using determining component 1208) at least one first distance between the first UE and at least one second UE based on one or more resource dimensions, such that the message is transmitted at a first transmission power at least in part based on the first distance.

[0122] In the fourth aspect, determining at least one first distance, either alone or in combination with one or more of the first to third aspects, includes: measuring (e.g., using...) Figure 12 The measurement component 1210 depicted in the diagram is associated with a reference signal of the first control information, and a path loss estimate to at least one second UE is determined (e.g., using the determination component 1208) based at least in part on the measurement, such that at least one first distance is determined at least in part based on the path loss estimate.

[0123] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, process 1100 further includes determining (e.g., using determining component 1208) the coverage distance associated with the first reserved resource set by decoding the first control information, such that at least one first distance is determined at least in part based on the coverage distance.

[0124] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the coverage distance is also determined at least in part based on the physical distance between the first UE and at least one second UE.

[0125] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, process 1100 further includes estimating (e.g., using determination component 1208) the propagation distance associated with the first reserved resource set based at least in part on information obtained by decoding the first control information.

[0126] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, at least one first distance is determined based at least in part on an estimate of interference between a data channel associated with the first UE and at least one data channel associated with at least one second UE using the first reserved resource set.

[0127] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, process 1100 further includes determining (e.g., using determination component 1208) a second distance based on one or more resource dimensions, at least in part based on an estimate of interference between a control channel associated with a first UE and at least one control channel associated with at least one second UE.

[0128] In the tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the message is transmitted with a transmission power at least in part based on the second distance.

[0129] In the eleventh aspect, alone or in combination with one or more of the first to tenth aspects, process 1100 further includes determining (e.g., using determination component 1208) a third distance based on an estimate of interference between a data channel associated with the first UE and at least one data channel used for retransmission and associated with at least one second UE, based on one or more resource dimensions, such that when transmitted in the time period associated with retransmission, the message is transmitted at a second transmission power based at least in part on at least one second distance.

[0130] In the twelfth aspect, either alone or in combination with one or more of the first to eleventh aspects, the message is not sent within the first reserved resource set during the time period associated with final transmission.

[0131] In the thirteenth aspect, either alone or in combination with one or more of the first to twelfth aspects, the message is sent using one or more resources within the first reserved resource set, and the one or more resources are determined at least in part based on the first transmission power.

[0132] In the fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, process 1100 further includes: receiving (e.g., using receiving component 1202) second control information associated with a second set of reserved resources on a sidelink channel from at least one third UE, and determining (e.g., using determining component 1208) at least one second distance between the first UE and at least one third UE based on one or more resource dimensions, such that the first transmit power is also at least partially based on the second distance.

[0133] In the fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, process 1100 further includes: determining (e.g., using determination component 1208) at least a third distance based on an estimate of interference between a data channel associated with the first UE and at least one data channel for retransmission and associated with at least one second UE, based on one or more resource dimensions; and determining (e.g., using determination component 1208) at least a fourth distance based on an estimate of interference between a data channel associated with the first UE and at least one data channel for retransmission and associated with at least one third UE, based on one or more resource dimensions, such that when transmitted during a time period associated with retransmission, the message is transmitted at a second transmission power based at least in part on at least the at least third distance and at least the at least fourth distance.

[0134] In the sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, process 1100 further includes: determining (e.g., using determination component 1208) at least a fifth distance based on an estimate of interference between a control channel associated with the first UE and at least one control channel associated with at least one second UE for retransmission, based on one or more resource dimensions; and determining (e.g., using determination component 1208) at least a sixth distance based on an estimate of interference between a control channel associated with the first UE and at least one control channel associated with at least one third UE for retransmission, based on one or more resource dimensions, such that the second transmit power is also based at least in part on at least a fifth distance and at least a sixth distance.

[0135] In the seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, process 1100 further includes sending (e.g., using...) before sending the message. Figure 12The second control information associated with the first reserved resource set (described in the sending component 1204).

[0136] In the eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, the second control information includes an indication that a first set of reserved resources from at least one second UE is reused.

[0137] In the nineteenth aspect, either alone or in combination with one or more of the first to eighteenth aspects, the second control information is transmitted on a different subchannel than the subchannel used to receive the first control information associated with the first reserved resource set.

[0138] In the twentieth aspect, either alone or in combination with one or more of the first to nineteenth aspects, the second control information is transmitted on a sub-channel different from the first sub-channel within the first reserved resource set, and the second control information includes an indication of the first sub-channel.

[0139] In the twenty-first aspect, either alone or in combination with one or more of the first to twentieth aspects, the second control information is transmitted on a sub-channel selected using one or more rules, which is different from the first sub-channel within the first reserved resource set.

[0140] In the twenty-second aspect, either alone or in combination with one or more of the first to twenty-first aspects, the second control information is transmitted on the same sub-channel used to receive the first control information, and at least some content of the second control information is copied from the first control information.

[0141] In the twenty-third aspect, either alone or in combination of one or more of the first to twenty-second aspects, process 1100 further includes: receiving (e.g., using receiving component 1202) second control information associated with a second set of reserved resources on a sidelink channel from at least one third UE; determining (e.g., using determining component 1208) at least one second distance based on an estimate of interference between a data channel associated with a first UE and at least one data channel associated with at least one third UE based on one or more resource dimensions; determining (e.g., using determining component 1208) at least one third distance based on an estimate of interference between a control channel associated with a first UE and at least one control channel associated with at least one second UE based on one or more resource dimensions; and determining (e.g., using determining component 1208) at least one fourth distance based on an estimate of interference between a control channel associated with a first UE and at least one control channel associated with at least one third UE based on one or more resource dimensions, such that the first transmit power is also based at least in part on at least one second distance, at least one third distance, and at least one fourth distance.

[0142] In the twenty-fourth aspect, alone or in combination with one or more of the first to twenty-third aspects, process 1100 further includes: determining (e.g., using determination component 1208) at least a fifth distance based on an estimate of interference between a data channel associated with the first UE and at least a data channel for retransmission and associated with at least one second UE, based on one or more resource dimensions; and determining (e.g., using determination component 1208) at least a sixth distance based on an estimate of interference between a data channel associated with the first UE and at least a data channel for retransmission and associated with at least one third UE, based on one or more resource dimensions, such that when transmitted during a time period associated with retransmission, the message is transmitted at a second transmission power based at least in part on at least the fifth distance and at least the sixth distance.

[0143] In the twenty-fifth aspect, alone or in combination with one or more of the first to twenty-fourth aspects, process 1100 further includes: determining (e.g., using determination component 1208) at least a seventh distance based on an estimate of interference between a control channel associated with the first UE and at least one control channel associated with at least one second UE for retransmission, based on one or more resource dimensions; and determining (e.g., using determination component 1208) at least an eighth distance based on an estimate of interference between a control channel associated with the first UE and at least one control channel associated with at least one third UE for retransmission, based on one or more resource dimensions, such that the second transmit power is also based at least in part on at least the seventh distance and at least the eighth distance.

[0144] Although Figure 11 An example box for process 1100 is shown, but in some respects, it differs from... Figure 11 Compared to the boxes depicted, process 1100 may include additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes in process 1100 may be executed in parallel.

[0145] Figure 12This is a block diagram of an example device 1200 for wireless communication. Device 1200 may be a first UE, or a first UE may include device 1200. In some aspects, device 1200 includes a receiving component 1202 and a transmitting component 1204 that can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1200 can use the receiving component 1202 and the transmitting component 1204 to communicate with another device 1206 (such as a UE, a base station, or another wireless communication device). As further shown, device 1200 may include one or more of a determining component 1208 and / or a measuring component 1210, etc.

[0146] In some respects, device 1200 can be configured to perform the functions described herein. Figure 8-10 One or more operations described herein. Additionally or alternatively, apparatus 1200 may be configured to perform one or more processes described herein (such as...). Figure 11 The process 1100), or a combination thereof. In some respects, Figure 12 The illustrated device 1200 and / or one or more components may include the elements described above. Figure 2 One or more components of the UE described. Additionally or alternatively, Figure 12 One or more components shown can be implemented in conjunction with the above. Figure 2 Within one or more components described. Additionally or alternatively, one or more components in the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0147] Receiver 1202 may receive communications from device 1206, such as reference signals, control information, data communications, or combinations thereof. Receiver 1202 may provide the received communications to one or more other components of device 1200. In some aspects, receiver 1202 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signals to one or more other components of device 1200. In some aspects, receiver 1202 may include the elements described above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0148] Transmitting component 1204 can transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1206. In some aspects, one or more other components of device 1200 can generate communications and provide the generated communications to transmitting component 1204 for transmission to device 1206. In some aspects, transmitting component 1204 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and can transmit the processed signals to device 1206. In some aspects, transmitting component 1204 can include the above-described combinations. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 1204 may be co-located with the receive component 1202 in a transceiver.

[0149] In some aspects, receiving component 1202 may receive first control information associated with a first set of reserved resources on a sidelink channel from device 1206. Receiving component 1202 may also attempt to decode additional control information, at least in part, based on the first control information. Accordingly, transmitting component 1204 may transmit a message using the first set of reserved resources, at least in part, based on receiving component 1202's failure to decode the additional control information. For example, receiving component 1202 may receive additional control information with quality and / or reliability too low for decoding, or may not receive additional control information at all. In some aspects, determining component 1208 may determine an unoccupied subset of resources in the first set of reserved resources by failing to decode the additional control information. Determining component 1208 may include the above-described combination of... Figure 2 The described UE includes a receiving processor, a transmitting processor, a controller / processor, a memory, or a combination thereof.

[0150] In some aspects, determining component 1208 may also determine at least one first distance between device 1200 and device 1206 based on one or more resource dimensions. Accordingly, transmitting component 1204 may transmit a message using a first transmission power at least partially based on the first distance. In some aspects, determining component 1208 may determine at least one first distance based on: measuring component 1210 measuring a reference signal associated with first control information, such that determining component 1208 determines a path loss estimate to device 1206 at least partially based on the measurement, such that at least one first distance is determined at least partially based on the path loss estimate. Measuring component 1210 may include the above-described combinations. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0151] In some aspects, determining component 1208 can determine the coverage distance associated with the first reserved resource set by decoding the first control information. Accordingly, determining component 1208 can determine at least one first distance based at least in part on the coverage distance.

[0152] Additionally or alternatively, determining component 1208 may estimate the propagation distance associated with the first reserved resource set based at least in part on information obtained by decoding the first control information.

[0153] In some aspects, determining component 1208 may determine the second distance based on one or more resource dimensions, at least in part on an estimate of the interference between the control channel associated with device 1200 and at least one control channel associated with device 1206.

[0154] Additionally, the determining component 1208 can determine the third distance based on one or more resource dimensions, at least in part, an estimate of interference between the data channel associated with device 1200 and at least one data channel used for retransmission and associated with device 1206. Accordingly, when transmitting during a time period associated with retransmission, the transmitting component 1204 can transmit a message with a second transmission power at least in part based on at least one second distance.

[0155] In some aspects, receiving component 1202 can receive second control information associated with a second set of reserved resources on a sidelink channel from an attached device (e.g., another UE). Accordingly, determining component 1208 can determine at least one second distance between device 1200 and the attached device based on one or more resource dimensions. Transmitting component 1204 can transmit messages with a first transmit power that is also at least partially based on the second distance.

[0156] In some aspects, determining component 1208 may also determine at least one third distance based on one or more resource dimensions, at least in part on an estimate of interference between the data channel associated with device 1200 and at least one data channel associated with device 1206 for retransmission. Determining component 1208 may also determine at least one fourth distance based on one or more resource dimensions, at least in part on an estimate of interference between the data channel associated with device 1200 and at least one data channel associated with retransmission and an auxiliary device. Accordingly, when transmission occurs during a time period associated with retransmission, transmitting component 1204 may transmit a message with a second transmission power also at least in part based on at least one third distance and at least one fourth distance.

[0157] In some aspects, determining component 1208 may also determine at least one fifth distance based on an estimate of interference between the control channel associated with device 1200 and at least one control channel associated with retransmission and device 1206, based on one or more resource dimensions. Determining component 1208 may also determine at least one sixth distance based on an estimate of interference between the control channel associated with device 1200 and at least one control channel associated with retransmission and auxiliary devices, based on one or more resource dimensions. Accordingly, when transmitting during a time period associated with retransmission, transmitting component 1204 may transmit a message with a second transmission power also based at least in part on at least one fifth distance and at least one sixth distance.

[0158] In some aspects, determining component 1208 may determine at least one second distance based on one or more resource dimensions, at least in part on an estimate of interference between the data channel associated with device 1200 and at least one data channel associated with the additional device. Determining component 1208 may also determine at least one third distance based on one or more resource dimensions, at least in part on an estimate of interference between the control channel associated with device 1200 and at least one control channel associated with device 1206. Determining component 1208 may also determine at least one fourth distance based on one or more resource dimensions, at least in part on an estimate of interference between the control channel associated with device 1200 and at least one control channel associated with the additional device. Accordingly, transmitting component 1204 may transmit a message using a first transmission power also at least in part based on at least one second distance, at least one third distance, and at least one fourth distance.

[0159] In some aspects, determining component 1208 may determine at least one fifth distance based on an estimate of interference between the data channel associated with device 1200 and at least one data channel associated with device 1206 for retransmission, based on one or more resource dimensions. Determining component 1208 may also determine at least one sixth distance based on an estimate of interference between the data channel associated with device 1200 and at least one data channel associated with retransmission and additional devices, based on one or more resource dimensions. Accordingly, when transmitting during a time period associated with retransmission, transmitting component 1204 may transmit a message with a second transmission power also based at least in part on at least one fifth distance and at least one sixth distance.

[0160] In some aspects, determining component 1208 may determine at least one seventh distance based on an estimate of interference between the control channel associated with device 1200 and at least one control channel associated with retransmission and device 1206, based on one or more resource dimensions. Determining component 1208 may also determine at least one eighth distance based on an estimate of interference between the control channel associated with device 1200 and at least one control channel associated with retransmission and auxiliary devices, based on one or more resource dimensions. Accordingly, transmitting component 1204 may transmit a message using a second transmission power also based at least in part on at least one seventh distance and at least one eighth distance.

[0161] In some respects, the sending component 1204 may send new control information associated with the first reserved resource set before sending the message.

[0162] Figure 12 The number and arrangement of components shown are provided as an example. In practice, with... Figure 12 Compared to the components shown, there may be additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 12 The two or more components shown can be implemented within a single component, or Figure 12 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 12 The collection of (one or more) components shown can perform actions described as being performed by Figure 12 Another set of components shown performs one or more functions.

[0163] Figure 13 This is a block diagram of an example device 1300 for wireless communication. Device 1300 may be a base station, or a base station may include device 1300. In some aspects, device 1300 includes a receiving component 1302 and a transmitting component 1304 that can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1300 can use the receiving component 1302 and the transmitting component 1304 to communicate with another device 1306 (such as a UE, a base station, or another wireless communication device). As further shown, device 1300 may include an allocation component 1308, etc.

[0164] In some respects, device 1300 can be configured to perform the functions described herein. Figure 8-10 One or more operations described herein. Additionally or alternatively, apparatus 1300 may be configured to perform one or more processes, or combinations thereof, described herein. Figure 13 The device 1300 and / or one or more components shown may include the above-described components. Figure 2One or more components of the described base station. Additionally or alternatively, Figure 13 One or more components shown can be implemented in conjunction with the above. Figure 2 Within one or more components described. Additionally or alternatively, one or more components in the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0165] Receiver 1302 may receive communications from device 1306, such as reference signals, control information, data communications, or combinations thereof. Receiver 1302 may provide the received communications to one or more other components of device 1300. In some aspects, receiver 1302 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signals to one or more other components of device 1300. In some aspects, receiver 1302 may include the elements described above. Figure 2 The described base station includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0166] Transmitting component 1304 can transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1306. In some aspects, one or more other components of device 1300 can generate communications and provide the generated communications to transmitting component 1304 for transmission to device 1306. In some aspects, transmitting component 1304 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and can transmit the processed signals to device 1306. In some aspects, transmitting component 1304 can include the combinations described above. Figure 2 The described base station includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 1304 may be co-located with the receive component 1302 in a transceiver.

[0167] In some aspects, allocation component 1308 may allocate a set of resources to device 1306 for use on the sidelink channel. For example, as described herein, the resource set may include a first set of reserved resources used by device 1306 (e.g., reserved with control information), or it may include a larger pool of resources from which device 1306 selects the first set of reserved resources for use. Allocation component 1308 may include the above-described combinations. Figure 2The described UE includes a receiving processor, a transmitting processor, a controller / processor, a memory, or a combination thereof. In some aspects, the transmitting component 1304 may transmit assigned authorization to the device 1306.

[0168] Figure 13 The number and arrangement of components shown are provided as an example. In practice, with... Figure 13 Compared to the components shown, there may be additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 13 The two or more components shown can be implemented within a single component, or Figure 13 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 13 The collection of (one or more) components shown can perform actions described as being performed by Figure 13 Another set of components shown performs one or more functions.

[0169] The following provides an overview of certain aspects of this disclosure:

[0170] Aspect 1: A method of wireless communication performed by a first user equipment (UE), comprising: receiving from at least one second UE first control information associated with a first reserved resource set on a sidelink channel; attempting to decode additional control information based at least in part on the first control information; and transmitting a message using the first reserved resource set based at least in part on the failure to decode the additional control information.

[0171] Aspect 2: The method of aspect 1, wherein the first control information includes side link control information.

[0172] Aspect 3; the method of any one of Aspects 1 to 2 further includes: determining, at least in part, an unoccupied subset of resources within the first reserved resource set based on the failure to decode additional control information.

[0173] Aspect 4: The method of any one of Aspects 1 to 3 further includes: determining at least one first distance between the first UE and at least one second UE based on one or more resource dimensions, wherein the message is transmitted at a first transmission power based at least in part on the first distance.

[0174] Aspect 5: The method of aspect 4, wherein determining at least one first distance comprises: measuring a reference signal associated with first control information; and determining a path loss estimate to at least one second UE based at least in part on the measurement, wherein at least one first distance is determined based at least in part on the path loss estimate.

[0175] Aspect 6: The method of any one of Aspects 4 to 5 further includes: determining a coverage distance associated with a first set of reserved resources by decoding first control information, wherein at least one first distance is determined at least in part based on the coverage distance.

[0176] Aspect 7: The method of aspect 6, wherein the coverage distance is also determined at least in part based on the physical distance between the first UE and at least one second UE.

[0177] Aspect 8: The method of any one of Aspects 4 to 7 further includes: estimating the propagation distance associated with the first reserved resource set based at least in part on information obtained by decoding the first control information.

[0178] Aspect 9: The method of any one of Aspects 4 to 8, wherein at least one first distance is determined at least in part based on an estimate of interference between a data channel associated with a first UE and at least one data channel associated with at least one second UE using a first reserved resource set.

[0179] Aspect 10: The method of any one of Aspects 4 to 9 further includes: determining a second distance based on one or more resource dimensions, at least in part based on an estimate of interference between a control channel associated with a first UE and at least one control channel associated with at least one second UE.

[0180] Aspect 11: The method of aspect 10, wherein the message is transmitted with a transmission power at least in part based on the second distance.

[0181] Aspect 12: The method of any one of Aspects 4 to 11 further includes: determining at least one second distance based on one or more resource dimensions, at least in part on an estimate of interference between a data channel associated with a first UE and at least one data channel used for retransmission and associated with at least one second UE, wherein when transmitted in a time period associated with retransmission, the message is transmitted at a second transmission power at least in part based on the at least one second distance.

[0182] Aspect 13: The method of any of Aspects 4 to 12, wherein the message is not sent within the first reserved resource set during the time period associated with the final sending.

[0183] Aspect 14: The method of any one of Aspects 4 to 13, wherein the message is sent using one or more resources within a first reserved resource set, and wherein the one or more resources are determined at least in part based on a first transmission power.

[0184] Aspect 15: The method of any one of Aspects 4 to 14 further includes: receiving from at least one third UE second control information associated with a second set of reserved resources on a sidelink channel; and determining at least one second distance between the first UE and at least one third UE based on one or more resource dimensions, wherein the first transmit power is also based at least in part on the second distance.

[0185] Aspect 16: The method of aspect 15 further includes: determining at least one third distance based on an estimate of interference between a data channel associated with a first UE and at least one data channel associated with at least one second UE for retransmission, based on one or more resource dimensions; and determining at least one fourth distance based on an estimate of interference between a data channel associated with a first UE and at least one data channel associated with at least one third UE for retransmission, based on one or more resource dimensions, wherein when transmitted in a time period associated with retransmission, the message is transmitted at a second transmission power based at least in part on at least one third distance and at least one fourth distance.

[0186] Aspect 17: The method of aspect 16 further includes: determining at least one fifth distance based on an estimate of interference between a control channel associated with a first UE and at least one control channel associated with at least one second UE for retransmission, based on one or more resource dimensions; and determining at least one sixth distance based on an estimate of interference between a control channel associated with a first UE and at least one control channel associated with at least one third UE for retransmission, based on one or more resource dimensions, wherein the second transmit power is also based at least in part on at least one fifth distance and at least one sixth distance.

[0187] Aspect 18: The method of any one of Aspects 4 to 14 further includes: receiving from at least one third UE second control information associated with a second set of reserved resources on a sidelink channel; determining at least one second distance based on an estimate of interference between a data channel associated with a first UE and at least one data channel associated with at least one third UE based on one or more resource dimensions; determining at least one third distance based on an estimate of interference between a control channel associated with a first UE and at least one control channel associated with at least one second UE based on one or more resource dimensions; and determining at least one fourth distance based on an estimate of interference between a control channel associated with a first UE and at least one control channel associated with at least one third UE based on one or more resource dimensions, wherein the first transmit power is also based at least in part on at least one second distance, at least one third distance, and at least one fourth distance.

[0188] Aspect 19: The method of aspect 18 further includes: determining at least one fifth distance based on an estimate of interference between a data channel associated with a first UE and at least one data channel for retransmission and associated with at least one second UE, based on one or more resource dimensions; and determining at least one sixth distance based on an estimate of interference between a data channel associated with a first UE and at least one data channel for retransmission and associated with at least one third UE, based on one or more resource dimensions, wherein when transmitted in a time period associated with retransmission, the message is transmitted at a second transmission power based at least in part on at least one fifth distance and at least one sixth distance.

[0189] Aspect 20: The method of aspect 19 further includes: determining at least a seventh distance based on an estimate of interference between a control channel associated with a first UE and at least a control channel associated with at least a second UE for retransmission, based on one or more resource dimensions; and determining at least a eighth distance based on an estimate of interference between a control channel associated with a first UE and at least a control channel associated with at least a third UE for retransmission, based on one or more resource dimensions, based on an estimate of interference between a control channel associated with a first UE and at least a control channel associated with at least a third UE for retransmission, wherein the second transmit power is also based at least in part on at least a seventh distance and at least a eighth distance.

[0190] Aspect 21: The method of any one of aspects 1 to 20 further includes: sending second control information associated with the first reserved resource set before sending the message.

[0191] Aspect 22: The method of aspect 21, wherein the second control information includes an indication that a first set of reserved resources from at least one second UE is reused.

[0192] Aspect 23: The method of any one of Aspects 21 to 22, wherein the second control information is transmitted on a different subchannel than the subchannel used to receive the first control information associated with the first reserved resource set.

[0193] Aspect 24: The method of any one of Aspects 21 to 22, wherein the second control information is transmitted on a sub-channel different from the first sub-channel within the first reserved resource set, and wherein the second control information includes an indication of the first sub-channel.

[0194] Aspect 25: The method of any one of Aspects 21 to 24, wherein the second control information is transmitted on a subchannel selected using one or more rules, which is different from the first subchannel within the first reserved resource set.

[0195] Aspect 26: The method of any one of Aspects 21 to 22, wherein the second control information is transmitted on the same sub-channel used to receive the first control information, and wherein at least some content of the second control information is copied from the first control information.

[0196] Aspect 27: An apparatus for wireless communication at a device, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods of aspects 1-26.

[0197] Aspect 28: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors being configured to perform one or more methods of aspects 1-26.

[0198] Aspect 29: An apparatus for wireless communication, comprising at least one component for performing one or more of the methods of aspects 1-26.

[0199] Aspect 30: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform one or more of the methods of aspects 1-26.

[0200] Aspect 31: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions which, when executed by one or more processors of the device, cause the device to perform one or more methods of aspects 1-26.

[0201] The foregoing disclosure provides illustrations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations can be made based on the foregoing disclosure, or modifications and variations can be derived from practice in the aspects.

[0202] As used herein, the term "component" is intended to be interpreted broadly as hardware and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, "software" should be interpreted broadly as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures and / or functions, etc. As used herein, a "processor" is implemented in hardware and / or a combination of hardware and software. It will be apparent to those skilled in the art that the systems and / or methods described herein can be implemented in various forms of hardware and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not a limitation in this respect. Therefore, the operation and behavior of the systems and / or methods are described herein without reference to any specific software code, as those skilled in the art will understand that software and hardware can be designed, at least in part, to implement the system and / or method based on the description herein.

[0203] As used in this article, depending on the context, “meeting the threshold” can refer to a value that is greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0204] Even if a specific combination of features is stated in the claims and / or disclosed in the specification, such combinations are not intended to limit the disclosure of aspects. Many of these features can be combined in ways not specifically stated in the claims and / or disclosed in the specification. The disclosure of aspects includes combinations of each dependent claim with each other claim in the claim set. As used herein, the phrase “at least one” in the list of references refers to any combination of those items, including single members. As an example, “at least one of a, b, or c” is intended to cover a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination with multiples of the same element (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c, or any other ordering of a, b, and c).

[0205] Elements, actions, or instructions used herein should not be construed as critical or necessary unless explicitly stated otherwise. Similarly, as used herein, the articles “a” and “one” are intended to include one or more items and may be used interchangeably with “one or more.” Furthermore, as used herein, the article “the” is intended to include one or more items referenced by the article “the” and may be used interchangeably with “one or more.” Additionally, as used herein, the terms “set” and “group” are intended to include one or more items and may be used interchangeably with “one or more.” Where only one item is referred to, the phrase “only one” or similar language is used. Likewise, as used herein, the terms “having,” “with,” “containing,” etc., are intended to be open-ended terms that do not limit the elements they modify (e.g., an element “having” A may also have B). Furthermore, the phrase “based on” is intended to mean “at least partially based on” unless explicitly stated otherwise. Similarly, as used herein, the term “or” is intended to be inclusive when used in a series and may be used interchangeably with “and / or” unless otherwise explicitly stated (e.g., if used in conjunction with “any one” or “only one of…”).

Claims

1. An apparatus for wireless communication at a first user equipment (UE), comprising: Memory; as well as One or more processors, coupled to the memory, are configured to: Receives first control information associated with a first set of reserved resources on a sidelink channel from at least one second UE, the first control information enabling the determination of at least one first distance between the first UE and the at least one second UE based on one or more resource dimensions; At least in part based on the first control information, attempt to decode the additional control information; as well as The message is sent using the first reserved resource set, at least in part based on the failure to decode the additional control information and using the first transmission power, wherein the first transmission power is at least in part based on the at least one first distance.

2. The apparatus of claim 1, wherein the first control information includes side link control information.

3. The apparatus of claim 1, wherein the one or more processors are further configured to: The unoccupied subset of resources within the first reserved resource set is determined at least in part based on the failure to decode the additional control information.

4. The apparatus of claim 1, wherein, In order to determine the at least one first distance, the one or more processors are configured to: Measure the reference signal associated with the first control information; as well as The path loss estimate to the at least one second UE is determined at least in part based on the measurements. The at least one first distance is determined at least in part based on the path loss estimate.

5. The apparatus of claim 1, wherein the one or more processors are further configured to: The coverage distance associated with the first reserved resource set is determined by decoding the first control information. The at least one first distance is determined at least in part based on the coverage distance.

6. The apparatus of claim 5, wherein the coverage distance is further determined at least in part based on the physical distance between the first UE and the at least one second UE.

7. The apparatus of claim 1, wherein the one or more processors are further configured to: The propagation distance associated with the first reserved resource set is estimated at least in part based on information obtained by decoding the first control information.

8. The apparatus of claim 1, wherein the at least one first distance is determined at least in part based on an estimate of interference between a data channel associated with the first UE using the first reserved resource set and at least one data channel associated with the at least one second UE.

9. The apparatus of claim 1, wherein the one or more processors are further configured to: The second distance is determined based on the one or more resource dimensions, at least in part based on the estimation of interference between the control channel associated with the first UE and at least one control channel associated with the at least one second UE.

10. The apparatus of claim 9, wherein the message is transmitted with a transmission power at least in part based on the second distance.

11. The apparatus of claim 1, wherein the one or more processors are further configured to: At least one second distance is determined based on the one or more resource dimensions, at least in part based on an estimate of interference between the data channel associated with the first UE and at least one data channel used for retransmission and associated with the at least one second UE. When the message is transmitted during the time period associated with the retransmission, it is transmitted at a second transmission power based at least in part on the at least one second distance.

12. The apparatus of claim 1, wherein the message is not sent within the first reserved resource set during the time period associated with final transmission.

13. The apparatus of claim 1, wherein the message is transmitted using one or more resources within the first reserved resource set, and wherein the one or more resources are determined at least in part based on the first transmission power.

14. The apparatus of claim 1, wherein the one or more processors are further configured to: Receive second control information associated with a second reserved resource set on the sidelink channel from at least one third UE; and At least one second distance between the first UE and the at least one third UE is determined based on the one or more resource dimensions. The first transmission power is also at least partially based on the second distance.

15. The apparatus of claim 14, wherein the one or more processors are further configured to: At least one third distance is determined based on the one or more resource dimensions, at least in part based on an estimate of interference between the data channel associated with the first UE and at least one data channel used for retransmission and associated with the at least one second UE, and At least one fourth distance is determined based on the one or more resource dimensions, at least in part based on an estimate of interference between the data channel associated with the first UE and at least one data channel used for retransmission and associated with the at least one third UE. When the message is transmitted during the time period associated with the retransmission, it is transmitted with a second transmission power based at least in part on the at least one third distance and the at least one fourth distance.

16. The apparatus of claim 15, wherein the one or more processors are further configured to: At least one fifth distance is determined based on the one or more resource dimensions, at least in part based on an estimate of interference between the control channel associated with the first UE and at least one control channel associated with the at least one second UE for retransmission; and At least one sixth distance is determined based on the one or more resource dimensions, at least in part based on the estimation of interference between the control channel associated with the first UE and at least one control channel associated with the at least one third UE for retransmission. The second transmission power is also based at least in part on the at least one fifth distance and the at least one sixth distance.

17. The apparatus of claim 1, wherein the one or more processors are further configured to: Receive second control information associated with a second set of reserved resources on the sidelink channel from at least one third UE; At least one second distance is determined based on the one or more resource dimensions, at least in part based on an estimate of the interference between the data channel associated with the first UE and at least one data channel associated with the at least one third UE; At least one third distance is determined based on the one or more resource dimensions, at least in part based on the estimation of interference between the control channel associated with the first UE and at least one control channel associated with the at least one second UE; as well as At least one fourth distance is determined based on the one or more resource dimensions, at least in part based on the estimation of interference between the control channel associated with the first UE and at least one control channel associated with the at least one third UE. The first transmission power is also based at least in part on the at least one second distance, the at least one third distance, and the at least one fourth distance.

18. The apparatus of claim 17, wherein the one or more processors are further configured to: At least one fifth distance is determined based on the one or more resource dimensions, at least in part based on an estimate of interference between the data channel associated with the first UE and at least one data channel used for retransmission and associated with the at least one second UE; and At least one sixth distance is determined based on the one or more resource dimensions, at least in part based on the estimation of interference between the data channel associated with the first UE and at least one data channel used for retransmission and associated with the at least one third UE. When the message is transmitted during the time period associated with the retransmission, it is transmitted with a second transmission power based at least in part on the at least one fifth distance and the at least one sixth distance.

19. The apparatus of claim 18, wherein the one or more processors are further configured to: At least one seventh distance is determined based on the one or more resource dimensions, at least in part based on an estimate of interference between the control channel associated with the first UE and at least one control channel associated with the at least one second UE for retransmission; and At least one eighth distance is determined based on the one or more resource dimensions, at least in part based on the estimation of interference between the control channel associated with the first UE and at least one control channel associated with the at least one third UE for retransmission. The second transmission power is also based, at least in part, on the at least one seventh distance and the at least one eighth distance.

20. The apparatus of claim 1, wherein the one or more processors are further configured to: Before sending the message, send the second control information associated with the first reserved resource set.

21. The apparatus of claim 20, wherein the second control information includes an indication that the first reserved resource set from the at least one second UE is reused.

22. The apparatus of claim 20, wherein the second control information is transmitted on a different subchannel than the subchannel used to receive the first control information associated with the first reserved resource set.

23. The apparatus of claim 22, wherein the second control information is transmitted on a subchannel different from the first subchannel within the first reserved resource set, and wherein the second control information includes an indication of the first subchannel.

24. The apparatus of claim 22, wherein the second control information is transmitted on a subchannel selected using one or more rules, which is different from the first subchannel within the first reserved resource set.

25. The apparatus of claim 20, wherein the second control information is transmitted on the same subchannel used to receive the first control information, and wherein at least some content of the second control information is copied from the first control information.

26. A method for wireless communication performed by a first user equipment (UE), comprising: Receives first control information associated with a first set of reserved resources on a sidelink channel from at least one second UE, the first control information enabling the determination of at least one first distance between the first UE and the at least one second UE based on one or more resource dimensions; At least in part based on the first control information, attempt to decode the additional control information; as well as The message is sent using the first reserved resource set, at least in part based on the failure to decode the additional control information and using the first transmission power, wherein the first transmission power is at least in part based on the at least one first distance.

27. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising: One or more instructions, which, when executed by one or more processors of a first user equipment (UE), cause the first UE to: Receives first control information associated with a first set of reserved resources on a sidelink channel from at least one second UE, the first control information enabling the determination of at least one first distance between the first UE and the at least one second UE based on one or more resource dimensions; At least in part based on the first control information, attempt to decode the additional control information; as well as The message is sent using the first reserved resource set, at least in part based on the failure to decode the additional control information and using the first transmission power, wherein the first transmission power is at least in part based on the at least one first distance.

28. The non-transitory computer-readable medium of claim 27, wherein, When the one or more instructions are executed by the one or more processors of the first UE, the first UE further: Receive second control information associated with a second set of reserved resources on the sidelink channel from at least one third UE; At least one second distance is determined based on the one or more resource dimensions, at least in part based on an estimate of the interference between the data channel associated with the first UE and at least one data channel associated with the at least one third UE; At least one third distance is determined based on the one or more resource dimensions, at least in part based on the estimation of interference between the control channel associated with the first UE and at least one control channel associated with the at least one second UE; as well as At least one fourth distance is determined based on the one or more resource dimensions, at least in part based on the estimation of interference between the control channel associated with the first UE and at least one control channel associated with the at least one third UE. The first transmission power is also based at least in part on the at least one second distance, the at least one third distance, and the at least one fourth distance.

29. An apparatus for wireless communication at a first user equipment (UE), comprising: A component for receiving, from at least one second UE, first control information associated with a first set of reserved resources on a sidelink channel, the first control information enabling the determination of at least one first distance between the first UE and the at least one second UE based on one or more resource dimensions; A component for attempting to decode additional control information based at least in part on the first control information; as well as A component for transmitting a message using the first reserved resource set, based at least in part on the failure to decode the additional control information and using a first transmission power, wherein the first transmission power is based at least in part on the at least one first distance.

30. The apparatus of claim 29, further comprising: A component for receiving second control information associated with a second set of reserved resources on the sidelink channel from at least one third UE; A component for determining at least one second distance based on an estimate of interference between a data channel associated with the device and at least one data channel associated with the at least one third UE, based on one or more resource dimensions; as well as A component for determining at least one third distance based on an estimate of interference between a control channel associated with the device and at least one control channel associated with the at least one second UE, based on one or more resource dimensions. A component for determining at least one fourth distance based on an estimate of interference between a control channel associated with the first UE and at least one control channel associated with the at least one third UE, based on one or more resource dimensions. The first transmission power is also based at least in part on the at least one second distance, the at least one third distance, and the at least one fourth distance.

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