Dynamically recovering resources reserved for forward compatibility

Abstract

Certain aspects of the present disclosure relate to methods and apparatus for dynamically recovering resources reserved for forward compatibility using a communication system operating according to a new radio (NR) technology. Certain aspects provide a method for wireless communication. The method generally includes identifying resources available for reuse that have been previously reserved for forward compatibility (FC), and providing signaling to one or more user equipments (UEs) indicating that the identified resources are available for reuse.

Description

[0001] This application is a divisional application of an application with an application date of June 22, 2018, application number 201880042935.2 (international application number PCT / US2018 / 038900), and name “Dynamic Reclaiming of Resources Reserved for Forward Compatibility”.

[0002] CROSS-REFERENCE TO RELATED APPLICATIONS

[0003] This patent application claims the benefit of U.S. Provisional Patent Application S / N. 62 / 527,016, filed on June 29, 2017, and U.S. Patent Application S / N. 16 / 014,689, filed on June 21, 2018, the entire contents of which are incorporated herein by reference as if fully set forth below and for all applicable purposes. Technical Field

[0004] The present disclosure relates generally to communication systems, and more particularly to methods and apparatus for dynamically reclaiming resources reserved for forward compatibility using a communication system operating according to New Radio (NR) technology. Background Art

[0005] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power). Examples of such multiple access technologies include Long Term Evolution (LTE) systems, 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, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems.

[0006] In some examples, a wireless multiple access communication system may include several base stations, each base station simultaneously supporting communication of multiple communication devices (also referred to as user equipment (UE)). In an LTE or LTE-A network, a set of one or more base stations may define an evolved B node (eNB). In other examples (e.g., in a next generation or 5G network), a wireless multiple access communication system may include several distributed units (DU) (e.g., edge units (EU), edge nodes (EN), radio heads (RH), smart radio heads (SRH), transmission reception points (TRP), etc.) in communication with several central units (CU) (e.g., central nodes (CN), access node controllers (ANC), etc.), wherein a set of one or more distributed units in communication with a central unit may define an access node (e.g., a new radio base station (NR BS), a new radio B node (NR NB), a network node, a 5G NB, an eNB, a next generation B node (gNB), etc.). A base station or DU may communicate with a group of UEs on downlink channels (eg, for transmissions from the base station to the UEs) and uplink channels (eg, for transmissions from the UEs to the base station or distributed unit).

[0007] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, and even global level. An example of an emerging telecommunication standard is New Radio (NR), for example, 5G radio access. NR is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). It is designed to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and better integrating with other open standards using OFDMA with cyclic prefix (CP) on downlink (DL) and uplink (UL), as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0008] However, as the demand for mobile broadband access continues to grow, there is a desire for further improvements in NR technology. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunication standards that employ these technologies. Summary of the invention

[0009] The systems, methods, and devices of the present disclosure each have several aspects, no single one of which is solely responsible for its desirable attributes. Without limiting the scope of the present disclosure as expressed in the appended claims, some features will now be discussed briefly. After considering this discussion, and particularly after reading the section entitled "Detailed Description," it will be understood how the features of the present disclosure provide advantages including improved communication between access points and stations in a wireless network.

[0010] Certain aspects provide a method for wireless communications by a network entity. The method generally includes identifying resources previously reserved for forward compatibility (FC) that are available for reuse, and providing signaling to one or more user equipments (UEs) indicating that the identified resources are available for reuse.

[0011] Certain aspects provide a method for wireless communications by a user equipment (UE). The method generally includes receiving signaling identifying resources previously reserved for forward compatibility (FC) that are available for reuse, and communicating using the identified resources.

[0012] Aspects generally include methods, apparatus, systems, computer-readable media, and processing systems substantially as described herein with reference to and as illustrated by the accompanying figures. Numerous other aspects are provided.

[0013] To achieve the foregoing and related ends, the one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and drawings set forth in detail certain illustrative features of the one or more aspects. However, these features are merely indicative of several of the various ways in which the principles of the various aspects may be employed, and this description is intended to cover all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to understand in detail the manner in which the above-stated features of the present disclosure are used, a more particular description of the content briefly summarized above may be made with reference to various aspects, some of which are illustrated in the accompanying drawings. It should be noted, however, that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are not to be considered limiting of its scope, as the description may admit to other equally effective aspects.

[0015] Figure 1 is a block diagram conceptually illustrating an example telecommunications system in which aspects of the present disclosure may be performed.

[0016] Figure 2 is a block diagram illustrating an example logical architecture of a distributed RAN in accordance with certain aspects of the present disclosure.

[0017] Figure 3 is a diagram illustrating an example physical architecture of a distributed RAN in accordance with certain aspects of the present disclosure.

[0018] Figure 4 is a block diagram conceptually illustrating a design of an example BS and user equipment (UE) in accordance with certain aspects of the present disclosure.

[0019] Figure 5 is a diagram illustrating an example for implementing a communication protocol stack in accordance with certain aspects of the present disclosure.

[0020] Figure 6 An example of a frame format for a New Radio (NR) system is illustrated in accordance with certain aspects of the present disclosure.

[0021] Figure 7

[0013] Example operations for wireless communications by a network entity are illustrated in accordance with aspects of the present disclosure.

[0022] Fig. 7A Explained that it can be executed Figure 7 Example components of the operations shown in FIG.

[0023] Figure 8

[0013] Example operations for wireless communications by a user equipment (UE) in accordance with aspects of the present disclosure are illustrated.

[0024] Fig. 8A Explained that it can be executed Figure 8 Example components of the operations shown in FIG.

[0025] Fig. 9

[0013] Communication devices that may include various components configured to perform operations of the techniques described herein are illustrated in accordance with aspects of the present disclosure.

[0026] Fig.10

[0013] Communication devices that may include various components configured to perform operations of the techniques described herein are illustrated in accordance with aspects of the present disclosure.

[0027] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures. It is contemplated that elements described in one aspect may be beneficially utilized in other aspects without specific recitation. DETAILED DESCRIPTION

[0028] Aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for New Radio (NR) (new radio access technology or 5G technology).

[0029] NR can support various wireless communication services, such as enhanced mobile broadband (eMBB) targeting wide bandwidth (e.g., more than 80 MHz), millimeter wave (mmW) targeting high carrier frequency (e.g., 27 GHz or above), massive MTC (mMTC) targeting non-backward compatible MTC technology, and / or mission critical targeting ultra-reliable low latency communication (URLLC). These services may include latency and reliability requirements. These services may also have different transmission time intervals (TTIs) to meet corresponding quality of service (QoS) requirements. In addition, these services can coexist in the same subframe.

[0030] The following description provides examples rather than limiting the scope, applicability or examples set forth in the claims. Changes may be made to the functions and arrangements of the elements discussed without departing from the scope of the present disclosure. Various examples may appropriately omit, replace, or add various procedures or components. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, the features described with reference to some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using other structures, functionality, or structures and functionality as supplements to the various aspects of the present disclosure set forth herein or in addition. It should be understood that any aspect of the present disclosure described herein may be implemented by one or more elements of the claims. The wording "exemplary" is used herein to mean used as "example, instance, or explanation". Any aspect described herein as "exemplary" need not be interpreted as being superior to or superior to other aspects.

[0031] The technology described herein can be used for various wireless communication networks, such as LTE, CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network can implement radio technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000, etc. UTRA includes other variants of Wideband CDMA (WCDMA) and CDMA. cdma2000 covers IS-2000, IS-95 and IS-856 standards. A TDMA network can implement radio technologies such as Global System for Mobile Communications (GSM). An OFDMA network can implement radio technologies such as NR (e.g., 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). NR is an emerging wireless communication technology being developed in collaboration with the 5G Technology Forum (5GTF). 3GPP Long Term Evolution (LTE) and Advanced LTE (LTE-A) are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization called "3rd Generation Partnership Project" (3GPP). cdma2000 and UMB are described in documents from an organization called "3rd Generation Partnership Project 2" (3GPP2). New Radio (NR) (e.g., 5G radio access) is an example of an emerging telecommunication standard. NR is an enhanced set of LTE mobile standards promulgated by 3GPP. "LTE" generally refers to LTE, Advanced LTE (LTE-A), LTE in unlicensed spectrum (white space LTE), etc. The technology described herein can be used for the wireless networks and radio technologies mentioned above as well as other wireless networks and radio technologies. For clarity, although various aspects may be described herein using terminology commonly associated with 3G and / or 4G wireless technologies, various aspects of the present disclosure may be applied in communication systems based on other generations, such as 5G and later generations, including NR technology.

[0032] Example Wireless Communication System

[0033] Figure 1 An example wireless network 100, such as a New Radio (NR) or 5G network, is illustrated in which aspects of the present disclosure may be performed.

[0034] like Figure 1As explained in , the wireless network 100 may include several BSs 110 and other network entities. A BS may be a station that communicates with a UE. Each BS 110 may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the coverage area of ​​a B node and / or a B node subsystem that serves the coverage area, depending on the context in which the term is used. In the NR system, the term "cell" and eNB, B node, 5G NB, AP, NR BS, NR BS, gNB or TRP may be interchangeable. In some examples, a cell may not necessarily be stationary, and the geographic area of ​​the cell may move according to the location of a mobile base station. In some examples, base stations may be interconnected to each other and / or to one or more other base stations or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces (such as direct physical connections, virtual networks, or analogs using any suitable transport networks).

[0035] In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a specific radio access technology (RAT) and may operate on one or more frequencies. RAT may also be referred to as radio technology, air interface, etc. Frequency may also be referred to as carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0036] A BS may provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs of users in a residence, etc.). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown in FIG. 1 , BSs 110a, 110b, and 110c may be macro BSs for macro cells 102a, 102b, and 102c, respectively. BS 110x may be a pico BS for pico cell 102x. BSs 110y and 110z may be femto BSs for femto cells 102y and 102z, respectively. A BS may support one or more (e.g., three) cells.

[0037] The wireless network 100 may also include a relay station. A relay station is a station that receives transmissions of data and / or other information from an upstream station (e.g., a BS or a UE) and sends transmissions of the data and / or other information to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that relays transmissions for other UEs. Figure 1 In the example shown in , a relay station 110r may communicate with a BS 110a and a UE 120r to facilitate communication between the BS 110a and the UE 120r. A relay station may also be referred to as a relay BS, a relay, or the like.

[0038] The wireless network 100 may be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relays, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 20 watts), while a pico BS, a femto BS, and a relay may have a lower transmit power level (e.g., 1 watt).

[0039] Wireless network 100 may support synchronous or asynchronous operation. For synchronous operation, each BS may have similar frame timing, and transmissions from different BSs may be roughly aligned in time. For asynchronous operation, each BS may have different frame timing, and transmissions from different BSs may not be aligned in time. The techniques described herein may be used for both synchronous and asynchronous operation.

[0040] A network controller 130 may be coupled to a set of BSs and provide coordination and control for these BSs. The network controller 130 may communicate with the BSs 110 via a backhaul. The BSs 110 may also communicate with each other, directly or indirectly, for example, via a wireless or wired backhaul.

[0041] UE 120 (e.g., 120x, 120y, etc.) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. UE may also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, customer premises equipment (CPE), cellular phone, smart phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet device, camera, gaming device, netbook, smartbook, ultrabook, medical device or medical equipment, health care device, biometric sensor / device, wearable device (such as smart watch, smart clothing, smart glasses, virtual reality glasses, smart wristband, smart jewelry (e.g., smart ring, smart necklace, etc.)), entertainment device (e.g., music device, video device, satellite radio, etc.), vehicle component or sensor, smart meter / sensor, robot, drone, industrial manufacturing equipment, positioning device (e.g., GPS, Beidou, ground), or any other suitable device configured to communicate via wireless or wired media. Some UEs may be considered machine type communication (MTC) or evolved MTC (eMTC) devices, which may include remote devices that can communicate with a base station, another remote device, or some other entity. Machine type communication (MTC) may refer to communication involving at least one remote device at at least one end of the communication, and may include a form of data communication involving one or more entities that do not necessarily require human interaction. MTC UEs may include UEs capable of MTC communication with an MTC server and / or other MTC devices via, for example, a public land mobile network (PLMN). MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, cameras, location tags, etc., which can communicate with a BS, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity for or to a network (e.g., a wide area network such as the Internet or a cellular network), for example, via a wired or wireless communication link. MTC UEs, as well as other UEs, may be implemented as Internet of Things (IoT) devices, such as narrowband IoT (NB-IoT) devices.

[0042] exist Figure 1 In FIG. 1 , a solid line with double arrows indicates desired transmissions between a UE and a serving BS, which is a BS designated to serve the UE on a downlink and / or uplink. A dashed line with double arrows indicates interfering transmissions between a UE and a BS.

[0043] Some wireless networks (e.g., LTE) utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single carrier frequency division multiplexing (SC-FDM) on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, which are also often referred to as frequency modulation, frequency bins, etc. Each subcarrier can be modulated with data. In general, modulation symbols are sent in the frequency domain under OFDM and in the time domain under SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system bandwidth. For example, the spacing of subcarriers can be 15kHz, and the minimum resource allocation (called a 'resource block') can be 12 subcarriers (or 180kHz). Therefore, for system bandwidths of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), the nominal FFT size can be equal to 128, 256, 512, 1024, or 2048, respectively. The system bandwidth can also be divided into subbands. For example, a subband may cover 1.08 MHz (eg, 6 resource blocks), and there may be 1, 2, 4, 8, or 16 subbands for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, respectively.

[0044] Although aspects of the examples described herein may be associated with LTE technology, aspects of the present disclosure may be applicable to other wireless communication systems, such as NR. NR may utilize OFDM with CP on the uplink and downlink, and include support for half-duplex operation using time division duplex (TDD). A single component carrier bandwidth of 100 MHz may be supported. NR resource blocks may span 12 subcarriers with a subcarrier bandwidth of 75 kHz over a duration of 0.1 ms. Each radio frame may include 2 half frames with a length of 10 ms, each half frame including 5 subframes. Therefore, each subframe may have a length of 1 ms. Each subframe may indicate a link direction (e.g., DL or UL) for data transmission and the link direction for each subframe may be dynamically switched. Each subframe may include DL / UL data and DL / UL control data. UL and DL subframes for NR may be referred to below. Figure 6 and 7 Described in more detail. Beamforming can be supported and the beam direction can be dynamically configured. MIMO transmission with precoding can also be supported. The MIMO configuration in the DL can support up to 8 transmit antennas (multi-layer DL transmission with up to 8 streams) and up to 2 streams per UE. Multi-layer transmission of up to 2 streams per UE can be supported. Up to 8 serving cells can be used to support the aggregation of multiple cells. Alternatively, in addition to being based on OFDM, NR can support different air interfaces. The NR network may include entities such as CU and / or DU.

[0045] In some examples, access to the air interface may be scheduled, wherein a scheduling entity (e.g., a base station) allocates resources for communication between some or all devices and equipment within its service area or cell. In the present disclosure, as further discussed below, a scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communications, a subordinate entity utilizes resources allocated by a scheduling entity. A base station is not the only entity that can be used as a scheduling entity. That is, in some examples, a UE may be used as a scheduling entity, thereby scheduling resources for one or more subordinate entities (e.g., one or more other UEs). In this example, the UE is acting as a scheduling entity, and other UEs utilize resources scheduled by the UE for wireless communication. A UE may act as a scheduling entity in a peer-to-peer (P2P) network and / or in a mesh network. In a mesh network example, UEs may optionally communicate directly with each other in addition to communicating with a scheduling entity.

[0046] Thus, in a wireless communication network having scheduled access to time-frequency resources and having a cellular configuration, a P2P configuration, and a mesh configuration, a scheduling entity and one or more subordinate entities may communicate using the scheduled resources.

[0047] As mentioned above, the RAN may include a CU and a DU. A NR BS (e.g., an eNB, a 5G B node, a B node, a transmission reception point (TRP), an access point (AP)) may correspond to one or more BSs. An NR cell may be configured as an access cell (ACell) or a data-only cell (DCell). For example, a RAN (e.g., a central unit or a distributed unit) may configure these cells. A DCell may be a cell used for carrier aggregation or dual connectivity but not for initial access, cell selection / reselection, or switching. In some cases, a DCell may not transmit a synchronization signal—in some cases, a DCell may transmit an SS. The NR BS may transmit a downlink signal to the UE to indicate the cell type. Based on the cell type indication, the UE may communicate with the NR BS. For example, the UE may determine the NR BS to be considered for cell selection, access, switching, and / or measurement based on the indicated cell type.

[0048] Figure 2 An example logical architecture of a distributed radio access network (RAN) 200 is illustrated, which may be Figure 1. The 5G access node 206 may include an access node controller (ANC) 202. The ANC may be a central unit (CU) of the distributed RAN 200. The backhaul interface to the next generation core network (NG-CN) 204 may be terminated at the ANC. The backhaul interface to the adjacent next generation access node (NG-AN) may be terminated at the ANC. The ANC may include one or more TRPs 208 (which may also be referred to as BS, NR BS, B node, 5G NB, AP, gNB or some other term). As described above, TRP may be used interchangeably with "cell".

[0049] TRP 208 may be a DU. The TRP may be connected to one ANC (ANC 202) or more than one ANC (not illustrated). For example, for RAN sharing, Radio as a Service (RaaS), and service-specific AND deployments, the TRP may be connected to more than one ANC. The TRP may include one or more antenna ports. The TRP may be configured to serve traffic to the UE individually (e.g., dynamically selected) or jointly (e.g., joint transmission).

[0050] The local architecture 200 can be used to illustrate the fronthaul definition. The architecture can be defined to support fronthaul solutions across different deployment types. For example, the architecture can be based on transport network capabilities (e.g., bandwidth, latency, and / or jitter).

[0051] The architecture may share features and / or components with LTE. According to various aspects, the next generation AN (NG-AN) 210 may support dual connectivity with NR. For LTE and NR, the NG-AN may share a common fronthaul.

[0052] The architecture may enable collaboration between and among TRPs 208. For example, collaboration may be provisioned within a TRP and / or across TRPs via ANC 202. According to various aspects, an inter-TRP interface may not be required / existent.

[0053] According to various aspects, dynamic configuration of split logic functions may exist within architecture 200. Figure 5 Described in more detail, a radio resource control (RRC) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, a medium access control (MAC) layer, and a physical (PHY) layer may be adaptively placed at a DU or CU (e.g., at a TRP or ANC, respectively). According to certain aspects, a BS may include a central unit (CU) (e.g., ANC 202) and / or one or more distributed units (e.g., one or more TRPs 208).

[0054] Figure 3An example physical architecture of a distributed RAN 300 according to aspects of the present disclosure is illustrated. A centralized core network unit (C-CU) 302 may host core network functions. The C-CU may be centrally deployed. C-CU functionality may be offloaded (e.g., to Advanced Wireless Services (AWS)) in an effort to handle peak capacity.

[0055] A centralized RAN unit (C-RU) 304 may host one or more ANC functions. Optionally, the C-RU may host core network functions locally. The C-RU may have a distributed deployment. The C-RU may be closer to the network edge.

[0056] The DU 306 may host one or more TRPs (edge ​​node (EN), edge unit (EU), radio head (RH), smart radio head (SRH), etc.) The DU may be located at the edge of the network with radio frequency (RF) functionality.

[0057] Figure 4 Explained Figure 1 10 and UE 120, which may be used to implement various aspects of the present disclosure. As described above, the BS may include a TRP. One or more components of the BS 110 and the UE 120 may be used to practice various aspects of the present disclosure. For example, the antenna 452, modulator (MOD) / demodulator (DEMOD) 454, processors 466, 458, 464, and / or controller / processor 480 of the UE 120, and / or the antenna 434, MOD / DEMOD 432, processors 430, 420, 438, and / or controller / processor 440 of the BS 110 may be used to perform the operations described herein and with reference to the present disclosure. Figure 7 and 8 Explanation of the operation.

[0058] Figure 4 It shows that it can be Figure 1 1 is a block diagram of a design of a BS 110 and a UE 120 for one of the BSs and one of the UEs in the UE. For a constrained association scenario, the base station 110 may be Figure 1 1. The macro BS 110c in FIG. 1 may be a macro BS 110c, and the UE 120 may be a UE 120y. The base station 110 may also be some other type of base station. The base station 110 may be equipped with antennas 434a to 434t, and the UE 120 may be equipped with antennas 452a to 452r.

[0059] At the base station 110, the transmit processor 420 may receive data from the data source 412 and control information from the controller / processor 440. The control information may be used for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), etc. The data may be used for a physical downlink shared channel (PDSCH), etc. The processor 420 may process (e.g., encode and symbol map) the data and the control information to obtain data symbols and control symbols, respectively. The processor 420 may also generate reference symbols (e.g., for PSS, SSS, and reference signals that vary from cell to cell). The transmit (Tx) multiple-input multiple-output (MIMO) processor 430 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols, where applicable, and may provide output symbol streams to modulators (MODs) 432a to 432t. For example, the Tx MIMO processor 430 may perform certain aspects described herein for RS multiplexing. Each modulator 432 may process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 432 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 432a through 432t may be transmitted via antennas 434a through 434t, respectively.

[0060] At the UE 120, antennas 452a to 452r may receive downlink signals from the base station 110 and may provide received signals to demodulators (DEMODs) 454a to 454r, respectively. Each demodulator 454 may condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples. Each demodulator 454 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 456 may obtain received symbols from all demodulators 454a to 454r, perform MIMO detection on these received symbols where applicable, and provide detected symbols. For example, the MIMO detector 456 may provide detected RS transmitted using the techniques described herein. A receive processor 458 may process (e.g., demodulate, deinterleave, and decode) these detected symbols, provide decoded data for the UE 120 to a data sink 460, and provide decoded control information to a controller / processor 480. According to one or more scenarios, CoMP aspects may include providing antennas and some Tx / Rx functionality so that they reside in distributed units. For example, some Tx / Rx processing may be done in a central unit, while other processing may be done at distributed units. For example, according to one or more aspects as shown in the diagram, BS modulator / demodulator 432 may be in a distributed unit.

[0061] On the uplink, at the UE 120, a transmit processor 464 may receive and process data from a data source 462 (e.g., for a physical uplink shared channel (PUSCH)) and control information from a controller / processor 480 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 464 may also generate reference symbols for reference signals. The symbols from the transmit processor 464 may be precoded by a TX MIMO processor 466, if applicable, further processed by demodulators 454a to 454r (e.g., for SC-FDM, etc.), and transmitted to the base station 110. At the BS 110, uplink signals from the UE 120 may be received by the antenna 434, processed by the modulator 432, detected by the MIMO detector 436, if applicable, and further processed by the receive processor 438 to obtain decoded data and control information sent by the UE 120. Receive processor 438 may provide decoded data to data sink 439 and decoded control information to controller / processor 440 .

[0062] Controllers / processors 440 and 480 may direct operations at base station 110 and UE 120, respectively. Processor 440 and / or other processors and modules at base station 110 may perform or direct processes for the techniques described herein. Processor 480 and / or other processors and modules at UE 120 may also perform or direct processes for the techniques described herein. Memories 442 and 482 may store data and program codes for BS 110 and UE 120, respectively. Scheduler 444 may schedule UEs for data transmission on the downlink and / or uplink.

[0063] Figure 5 A diagram 500 showing an example for implementing a communication protocol stack according to various aspects of the present disclosure is illustrated. The illustrated communication protocol stack may be implemented by a device operating in a 5G system (e.g., a system supporting uplink-based mobility). Diagram 500 illustrates a communication protocol stack including a radio resource control (RRC) layer 510, a packet data convergence protocol (PDCP) layer 515, a radio link control (RLC) layer 520, a media access control (MAC) layer 525, and a physical (PHY) layer 530. In various examples, these layers of the protocol stack may be implemented as separate software modules, portions of a processor or ASIC, portions of non-co-located devices connected by a communication link, or various combinations thereof. Co-located and non-co-located implementations may be used, for example, in a protocol stack for a network access device (e.g., AN, CU, and / or DU) or a UE.

[0064] The first option 505-a illustrates a split implementation of the protocol stack, where the implementation of the protocol stack is performed on a centralized network access device (e.g., Figure 2 ANC 202 in the system) and distributed network access equipment (e.g., Figure 2 In the first option 505-a, the RRC layer 510 and the PDCP layer 515 may be implemented by a central unit, while the RLC layer 520, the MAC layer 525, and the PHY layer 530 may be implemented by the DU. In various examples, the CU and the DU may be co-located or non-co-located. The first option 505-a may be useful in a macro cell, a micro cell, or a pico cell deployment.

[0065] The second option 505-b shows a unified implementation of the protocol stack, where the protocol stack is implemented in a single network access device (e.g., access node (AN), new radio base station (NR BS), new radio node B (NR NB), network node (NN), etc.). In the second option, the RRC layer 510, the PDCP layer 515, the RLC layer 520, the MAC layer 525, and the PHY layer 530 may each be implemented by the AN. The second option 505-b may be useful in femtocell deployment.

[0066] Regardless of whether the network access device implements part or all of the protocol stack, the UE may implement the entire protocol stack (eg, the RRC layer 510, the PDCP layer 515, the RLC layer 520, the MAC layer 525, and the PHY layer 530).

[0067] Figure 6 6 is a diagram showing an example of a frame format 600 for NR. The transmission timeline of each of the downlink and uplink may be divided into units of radio frames. Each radio frame may have a predetermined duration (e.g., 10 ms) and may be divided into 10 subframes with indices 0 to 9, each subframe being 1 ms. Each subframe may include a variable number of slots, depending on the subcarrier spacing. Each slot may include a variable number of symbol periods (e.g., 7 or 14 symbols), depending on the subcarrier spacing. An index may be assigned to the symbol period in each slot. A mini slot, which may be referred to as a subslot structure, refers to a transmission time interval having a duration less than a slot (e.g., 2, 4, or 7 symbols).

[0068] Each symbol in a slot may indicate a link direction (e.g., DL, UL, or flexible) for data transmission, and the link direction for each subframe may be switched dynamically. The link direction may be based on the slot format. Each slot may include DL / UL data and DL / UL control information.

[0069] In NR, a synchronization signal (SS) block is transmitted. The SS block includes PSS, SSS, and two-symbol PBCH. The SS block can be in a fixed time slot position (such as Figure 6 ) is transmitted in the codewords 0-3 shown in . PSS and SSS can be used by UE for cell search and acquisition. PSS can provide half-frame timing, and SS can provide CP length and frame timing. PSS and SSS can provide cell identity. PBCH carries some basic system information, such as downlink system bandwidth, timing information within radio frames, SS burst set periodicity, system frame number, etc. SS blocks can be organized into SS bursts to support beam sweeping. Further system information (such as remaining minimum system information (RMSI), system information block (SIB), other system information (OSI)) can be transmitted on the physical downlink shared channel (PDSCH) in certain subframes.

[0070] In some cases, two or more subordinate entities (e.g., UEs) may communicate with each other using sidelink signals. Real-world applications of such sidelink communications may include public safety, proximity services, UE-to-network relay, vehicle-to-vehicle (V2V) communications, Internet of Everything (IoE) communications, IoT communications, mission-critical mesh networks, and / or various other suitable applications. In general, a sidelink signal may refer to a signal that is communicated from one subordinate entity (e.g., UE1) to another subordinate entity (e.g., UE2) without relaying the communication through a scheduling entity (e.g., UE or BS), even if the scheduling entity may be used for scheduling and / or control purposes. In some examples, the sidelink signal may be communicated using a licensed spectrum (unlike wireless local area networks, which typically use an unlicensed spectrum).

[0071] The UE may operate in various radio resource configurations, including a configuration associated with transmitting a pilot using a dedicated resource set (e.g., a radio resource control (RRC) dedicated state, etc.), or a configuration associated with transmitting a pilot using a shared resource set (e.g., an RRC shared state, etc.). When operating in the RRC dedicated state, the UE may select a dedicated resource set for transmitting a pilot signal to the network. When operating in the RRC shared state, the UE may select a shared resource set for transmitting a pilot signal to the network. In either case, the pilot signal transmitted by the UE may be received by one or more network access devices (such as an AN, or a DU, or parts thereof). Each receiving network access device may be configured to receive and measure a pilot signal transmitted on a shared resource set, and also receive and measure a pilot signal transmitted on a dedicated resource set allocated to the UE, wherein the network access device is a member of a monitoring network access device set for the UE. One or more receiving network access devices or a CU to which (s) receiving network access devices transmit pilot signal measurements may use these measurements to identify a serving cell of the UE or initiate a change in a serving cell for one or more UEs.

[0072] Example of forward compatibility

[0073] A forward compatible design for NR can be provided that ensures smooth introduction of future services, features, spectrum, and new device types. In addition, a forward compatible design for NR can be provided that ensures and maintains access to earlier services and UEs in the same spectrum.

[0074] A forward compatible design for NR may include some resources referred to as forward compatible resources, which may need to be reserved for forward compatible operation. For example, some control or data resources may be reserved as forward compatible resources. Specific cases of control data resources that may be reserved may include some symbols or subbands of the control and / or data regions. Another example may include control or data payloads, such as some bit fields in the payload. In another example, sounding and sensing resources may be reserved as forward compatible resources, such as RS (e.g., CSI-RS), IMR, etc.

[0075] In one or more examples, forward compatible (FC) resources may be configured and indicated to the UE using a broadcast message such as system information. In other examples, forward compatible (FC) resources may be configured and indicated to the UE using a unicast message such as RRC signaling for connected mode UEs.

[0076] Currently, FC resources are statically or semi-statically assigned, and therefore, legacy services and / or legacy devices (such as cellular cells, TRPs and / or UEs) cannot use the FC resources. As a result, legacy control / data transmissions are rate matched around the FC resources. Although its impact can be minimized by design, the (semi-)static assignment of FC resources may reduce the flexibility and efficiency of the entire system. This may be especially true when the system is mainly populated by legacy devices (cellular cells / TRPs / UEs).

[0077] Example of dynamically reclaiming resources reserved for forward compatibility

[0078] According to one or more aspects of the embodiments described herein, dynamic reclamation and / or reconfiguration of resources reserved for forward compatibility is provided. In addition, one or more scenarios may allow any service or cell / TRP / UE to reuse the reserved FC resources in a dynamic manner. Thus, according to one or more scenarios, under certain conditions, FC resources may be dynamically reconfigured for any service or cell / TRP / UE (including legacy services / devices) for different purposes.

[0079] Figure 7 Illustrated are operations 700 that may be performed by a network entity for wireless communications in accordance with aspects of the present disclosure.

[0080] Operations 700 may begin at 702, where a network entity identifies resources previously reserved for forward compatibility (FC) that are available for reuse. At 704, operations 700 may further include the network entity providing signaling to one or more user equipments (UEs) indicating that the identified resources are available for reuse.

[0081] In some cases, resources are identified as available based on one or more triggering events. In some cases, the one or more triggering events include a triggering event based on at least one of: a location of one or more UEs, a non-overlapping spatial segment, an application-specific requirement, or a capability of one or more UEs. In some cases, the one or more triggering events include a triggering event based on actual use of FC resources. Operation 700 may further include the network entity determining actual use of FC resources based on at least one of: sensing of a load on the FC resources, sensing of traffic on the FC resources, or backhaul signaling of at least one of the load or traffic on the FC resources.

[0082] Figure 8 Illustrated are operations 800 that may be performed by a user equipment (UE) for wireless communications in accordance with aspects of the present disclosure.

[0083] Operations 800 may begin at 802, where the UE receives signaling identifying resources previously reserved for forward compatibility (FC) that are available for reuse. At 804, operations 800 may further include the UE communicating using the identified resources.

[0084] According to one or more scenarios, dynamic reconfiguration of FC resources may be provided to allow any service or cell / TRP / UE to reuse the reserved FC resources in a dynamic manner. In particular, according to one or more scenarios, static reservation of FC resources may be maintained. However, when certain specific conditions are provided, FC resources may be dynamically reclaimed for use by any service or cell / TRP / UE (including legacy services / devices) for different purposes.

[0085] Dynamically reclaiming FC resources may be provided on a per-time slot basis. In other cases, FC resources may be reclaimed for symbol-wise reuse and / or subband reuse. In addition, dynamic reclaiming FC resources may be provided within a certain time duration. In one or more cases, dynamic reclaiming FC resources may be provided based on some patterns (e.g., periodicity of reuse, hopping patterns, etc.). In addition, another example of dynamically reclaiming FC resources may be based on spatial beamforming.

[0086] The indication of the reclaimed resources may be a cell-specific, UE-specific, or UE-group-specific resource allocation indication, and may be based on MAC-CE and / or downlink control information (DCI) or (group-common) DCI separate signaling. Indications by MAC-CE and / or DCI or DCI separate signaling have higher priority than RRC signaling and / or broadcast-based assignments of FC resources. Thus, for example, in one or more scenarios, the time duration may be triggered by DCI.

[0087] In one or more cases, multiple FC resource configurations may be provided for maintenance. Multiple FC resource configurations may be established via RRC signaling or broadcast messages. In some cases, the index of the configuration being used may be signaled via MAC-CE and / or group-shared DCI. A set of FC resource configurations may include one or more of a complete FC resource configuration, a reduced FC resource configuration, and / or an empty FC resource configuration. For example, in some cases, a time duration may be part of a FC resource configuration.

[0088] One of these full, reduced and / or empty FC resource configurations may be dynamically selected depending on the load condition of the FC resources. For example, selecting "full FC resources" may indicate that some operations are involved (e.g., disabling any reclamation of FC resources) because the FC resources are fully utilized and therefore no FC resources can be used. Selecting "empty FC resources" may indicate that all FC resources can be reused for other purposes because no one is using these resources and therefore anyone can use these resources for other purposes.

[0089] According to some scenarios, one or more conditions for activating dynamic recovery may be provided. In one or more scenarios, the UE location (e.g., cell edge or center) and / or interference characteristics may be considered as conditions for activating dynamic recovery. In one or more scenarios, the interference characteristics may generally depend on the UE location.

[0090] In some cases, FC resources of neighboring cells may be reused by cell-center UEs because FC resources generate less inter-cell interference.In another example, FC resources may be reused between UEs in neighboring cells in non-overlapping (or minimally overlapping) spatial segments.

[0091] Application-specific requirements may be used to provide conditions for activating dynamic recycling. In some cases, some emergency services may override the FC resources of their serving cell. In addition, it may also be possible to support preventing the use of FC resources to reduce co-channel interference. UE capabilities may also be used as conditions for activating dynamic recycling. In some cases, some advanced receivers with interference mitigation capabilities may reuse FC resources.

[0092] The actual usage of FC resources may indicate the conditions for activating dynamic reclamation. Therefore, the load / traffic of FC resources can be monitored by gNB / TRP / UE and can be reused in a cognitive manner. The load / traffic of FC resources can be sensed at gNB / TRP / UE, similar to the listen-before-talk framework of shared spectrum systems. In addition, backhaul or network signaling may also deliver load / traffic information.

[0093] Fig. 9The following describes operations that may include configuring to perform the techniques described herein (such as Figure 7 900 includes various components (e.g., corresponding to means-plus-function components) of the operation 700 illustrated in FIG. 900 . The communication device 900 includes a processing system 914 coupled to a transceiver 912. The transceiver 912 is configured to transmit and receive signals (such as the various signals described herein) for the communication device 900 via an antenna 920. The processing system 914 may be configured to perform processing functions for the communication device 900, including processing signals received and / or to be transmitted by the communication device 900.

[0094] The processing system 914 includes a processor 908 coupled to a computer readable medium / memory 910 via a bus 924. In some aspects, the computer readable medium / memory 910 is configured to store instructions that, when executed by the processor 908, cause the processor 908 to perform Figure 7 or other operations for performing the various techniques discussed herein. In some aspects, the processing system 914 further includes a Figure 7 The processing system 914 also includes a component for performing the operations described at 702 in FIG. Figure 7 A providing component 904 of the operation explained at 704 in FIG.

[0095] The identification component 902 and the providing component 904 can be coupled to the processor 908 via the bus 1024. In some aspects, the identification component 902 and the providing component 904 can be hardware circuits. In some aspects, the identification component 902 and the providing component 904 can be software components that are executed and run on the processor 908.

[0096] Fig.10 The following describes operations that may include configuring to perform the techniques described herein (such as Figure 8 1000 includes a communication device 1000 including various components (e.g., corresponding to means-plus-function components) of the operation 800 illustrated in FIG. 1000 . The communication device 1000 includes a processing system 1014 coupled to a transceiver 1012. The transceiver 1012 is configured to transmit and receive signals (such as the various signals described herein) for the communication device 1000 via an antenna 1020. The processing system 1014 may be configured to perform processing functions for the communication device 1000, including processing signals received and / or to be transmitted by the communication device 1000.

[0097] The processing system 1014 includes a processor 1008 coupled to a computer readable medium / memory 1010 via a bus 1024. In some aspects, the computer readable medium / memory 1010 is configured to store instructions that, when executed by the processor 1008, cause the processor 1008 to perform Figure 8 or other operations for performing the various techniques discussed herein. In some aspects, the processing system 1014 further includes a Figure 8 The processing system 1014 also includes a component for performing the operations described at 802 in FIG. Figure 8 An identified resource reuse component 1004 of the operations illustrated at 804 in FIG.

[0098] The identification component 1002 and the identified resource reuse component 1004 can be coupled to the processor 1008 via the bus 1024. In some aspects, the identification component 1002 and the identified resource reuse component 1004 can be hardware circuits. In some aspects, the identification component 1002 and the identified resource reuse component 1004 can be software components that are executed and run on the processor 1008.

[0099] The methods described herein include one or more steps or actions for achieving the described methods. These method steps and / or actions may be interchangeable with each other without departing from the scope of the claims. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions may be changed without departing from the scope of the claims.

[0100] As used herein, a phrase referring to "at least one of" a list of items 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, ab, ac, bc, and abc, as well as any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c). As used herein (including in the claims), the term "and / or" used in a listing of two or more items means that any of the listed items may be employed alone, or any combination of two or more of the listed items may be employed. For example, if a composition is described as comprising components A, B, and / or C, the composition may comprise only A; only B; only C; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C.

[0101] As used herein, the term "determining" encompasses a wide variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, a database, or another data structure), ascertaining, and the like. Also, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. "Determining" may also include resolving, selecting, choosing, establishing, and the like.

[0102] The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the universal principles defined herein may be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but should be granted the full scope consistent with the claims in language, wherein the singular references to the elements are not intended to mean "there is and only one", but "one or more", unless otherwise stated. For example, the articles "one" and "some" as used in this application and the appended claims should generally be understood to mean "one or more", unless otherwise stated or clearly seen from the context to refer to the singular form. Unless otherwise stated, the term "some" refers to one or more. In addition, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or". That is, unless otherwise specified or clearly seen from the context, phrases such as "X adopts A or B" are intended to mean any natural concurrent arrangement. That is, for example, the phrase "X adopts A or B" is satisfied by any of the following examples: X adopts A; X adopts B; or X adopts both A and B. All structural and functional equivalents of the elements of various aspects described throughout this disclosure that are currently or hereafter known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, nothing described herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly recited in the claims. No element of a claim should be interpreted under the provisions of 35 U.S.C. §112, sixth paragraph, unless the element is explicitly recited using the phrase "means for..." or in the case of a method claim, the element is recited using the phrase "step for..."

[0103] The various operations of the methods described above may be performed by any suitable device capable of performing the corresponding functions. These devices may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs), or processors. Generally, where there are operations illustrated in the figures, these operations may have corresponding paired device-plus-function components with similar numbers. For example, Figure 7 The operations 700 and Figure 8The operations 800 described in Fig. 7A The device 700A and Fig. 8A The device 800A illustrated in FIG.

[0104] For example, the means for transmitting and / or the means for receiving may include one or more of the transmit processor 420, TX MIMO processor 430, receive processor 438, or antenna(s) 434 of base station 110 and / or the transmit processor 464, TX MIMO processor 466, receive processor 458, or antenna(s) 452 of user equipment 120. Additionally, the means for identifying, the means for providing, the means for signaling, the means for indicating, the means for sensing, the means for backhaul signaling, and / or the means for communicating may include one or more processors, such as the controller / processor 440 of base station 110 and / or the controller / processor 480 of user equipment 120.

[0105] The various illustrative logical blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or executed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0106] If implemented in hardware, an example hardware configuration may include a processing system in a wireless node. The processing system may be implemented using a bus architecture. Depending on the specific application and overall design constraints of the processing system, the bus may include any number of interconnecting buses and bridges. The bus may link together various circuits including a processor, a machine-readable medium, and a bus interface. The bus interface may be used to connect a network adapter, etc., to the processing system via the bus. The network adapter may be used to implement the signal processing functions of the PHY layer. In the user terminal 120 (see Figure 1), a user interface (e.g., a keypad, display, mouse, joystick, etc.) may also be connected to the bus. The bus may also link various other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, and the like, which are well known in the art and will not be described further. The processor may be implemented with one or more general and / or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuit systems capable of executing software. Those skilled in the art will recognize how to best implement the functionality described with respect to the processing system, depending on the specific application and the overall design constraints imposed on the overall system.

[0107] If implemented in software, each function may be stored on or transmitted by a computer-readable medium as one or more instructions or codes. Software should be broadly interpreted to mean instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or other. Computer-readable media include both computer storage media and communication media, which include any media that facilitate the transfer of computer programs from one place to another. The processor may be responsible for managing the bus and general processing, including executing software modules stored on a machine-readable storage medium. A computer-readable storage medium may be coupled to a processor so that the processor can read and write information from / to the storage medium. Alternatively, a storage medium may be integrated into a processor. As an example, a machine-readable medium may include a transmission line, a carrier modulated by data, and / or a computer-readable storage medium having instructions stored thereon that is separated from a wireless node, all of which may be accessed by a processor through a bus interface. Alternatively or in addition, a machine-readable medium or any part thereof may be integrated into a processor, such as a cache and / or a general register file, which may be the case. As an example, examples of machine-readable storage media may include RAM (random access memory), flash memory, phase change memory, ROM (read only memory), PROM (programmable read only memory), EPROM (erasable programmable read only memory), EEPROM (electrically erasable programmable read only memory), registers, magnetic disks, optical disks, hard drives, or any other suitable storage media, or any combination thereof. Machine-readable media may be implemented in a computer program product.

[0108] A software module may include a single instruction, or many instructions, and may be distributed over several different code segments, between different programs, and across multiple storage media. A computer-readable medium may include several software modules. These software modules include instructions that cause a processing system to perform various functions when executed by a device (such as a processor). These software modules may include a transmission module and a receiving module. Each software module may reside in a single storage device or may be distributed across multiple storage devices. As an example, when a triggering event occurs, a software module may be loaded into a RAM from a hard drive. During the execution of the software module, the processor may load some instructions into a cache to increase access speed. One or more cache lines may then be loaded into a general register file for execution by the processor. When describing the functionality of a software module as described below, it will be understood that such functionality is implemented by the processor when the processor executes instructions from the software module.

[0109] Any connection is also properly referred to as a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology (such as infrared (IR), radio, and microwave), then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technology (such as infrared, radio, and microwave) is included in the definition of medium. Disk and disc, as used herein, include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Disks, where disks often reproduce data magnetically, and discs reproduce data optically with lasers. Thus, in some aspects, computer-readable media may include non-transitory computer-readable media (e.g., tangible media). Additionally, for other aspects, computer-readable media may include transient computer-readable media (e.g., signals). The above combinations should also be included within the scope of computer-readable media.

[0110] Thus, certain aspects may include a computer program product for performing the operations presented herein. For example, such a computer program product may include a computer-readable medium having stored (and / or encoded) thereon instructions that can be executed by one or more processors to perform the operations described herein. For example, instructions for performing the operations described herein and illustrated in the accompanying drawings.

[0111] In addition, it should be appreciated that modules and / or other appropriate means for performing the methods and techniques described herein may be downloaded and / or otherwise obtained by a user terminal and / or base station where applicable. For example, such a device can be coupled to a server to facilitate the transfer of means for performing the methods described herein. Alternatively, the various methods described herein can be provided via a storage device (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or a floppy disk, etc.) so that once the storage device is coupled to or provided to a user terminal and / or base station, the device can obtain the various methods. In addition, any other suitable technology suitable for providing the methods and techniques described herein to a device may be utilized.

[0112] It will be understood that the claims are not limited to the precise configuration and components illustrated above. Various changes, substitutions and variations may be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

Claims

1. A method for wireless communication by a network entity, comprising: identifying resources that are unavailable for one or more user equipments (UEs); as well as Signaling is provided to the one or more UEs indicating the resources unavailable to the one or more UEs, wherein the resources unavailable to the one or more UEs are based on a periodicity of a reuse pattern.

2. The method of claim 1, wherein the resources unavailable to the one or more UEs comprise resources reserved for forward compatibility.

3. The method of claim 1, wherein the signaling indicating the resources unavailable to the one or more UEs is further based on a frequency hopping pattern.

4. The method of claim 1, wherein the signaling is at least one of: cell-specific, UE-specific, or UE-group-specific.

5. The method of claim 1, wherein a periodicity of the reuse pattern indicates the resources unavailable to the one or more UEs for a duration of time.

6. The method of claim 5, wherein at least one of the following: The time duration is triggered by at least one of downlink control information (DCI); or The time duration is part of the forward compatibility (FC) resource configuration.

7. The method of claim 1, wherein the signaling indicates the resources unavailable to the one or more UEs based on spatial beamforming.

8. The method of claim 1, further comprising: signaling a plurality of forward compatibility (FC) configurations to the one or more UEs via radio resource control (RRC) signaling; as well as The resources unavailable to the one or more UEs are indicated as one of the plurality of FC resource configurations.

9. The method of claim 1, wherein the resources unavailable to the one or more UEs are identified based on one or more triggering events.

10. The method of claim 9, wherein the one or more triggering events include a triggering event based on at least one of: The location of the one or more UEs; Non-overlapping spatial segments; Application-specific requirements; or The capabilities of the one or more UEs.

11. The method of claim 9, wherein the one or more triggering events include a triggering event based on actual usage of the resources unavailable to the one or more UEs.

12. The method of claim 11, further comprising: Actual usage of the identified resource is determined based on at least one of: sensing of a load of the resources unavailable to the one or more UEs; sensing of traffic on said resources that is unavailable to said one or more UEs; or Backhaul signaling of at least one of a load on the resources unavailable for the one or more UEs or traffic on the resources unavailable for the one or more UEs.

13. A method for wireless communication by a user equipment (UE), comprising: receiving signaling identifying resources unavailable to the UE, wherein the signaling indicates the resources unavailable to the UE based on a periodicity of a reuse pattern; as well as The resources unavailable to the UE are used for communication.

14. The method of claim 13, wherein the resources unavailable to the UE comprise resources reserved for forward compatibility.

15. The method of claim 13, wherein the signaling indicating the resources unavailable to the UE is further based on a frequency hopping pattern.

16. The method of claim 13, wherein the signaling is at least one of: cell-specific, UE-specific, or UE-group-specific.

17. The method of claim 13, wherein a periodicity of the reuse pattern indicates the resources unavailable to the UE for a duration of time.

18. The method of claim 17, wherein: The time duration is triggered by downlink control information (DCI) or the time duration is part of a forward compatibility (FC) resource configuration.

19. The method of claim 13, wherein the signaling indicates the resources unavailable to the UE based on spatial beamforming.

20. The method of claim 13, further comprising receiving signaling of a plurality of forward compatibility (FC) resource configurations via radio resource control (RRC) signaling, wherein the signaling indicating the resources unavailable for the UE provides an indication of one of the plurality of FC resource configurations.

21. An apparatus for wireless communication by a network entity, comprising: at least one processor configured to: identifying resources that are unavailable for one or more user equipments (UEs); providing signaling to the one or more UEs indicating the resources unavailable to the one or more UEs, wherein the resources unavailable to the one or more UEs are based on a periodicity of a reuse pattern; as well as A memory coupled to the at least one processor.

22. The apparatus of claim 21, wherein the resources unavailable to the one or more UEs comprise resources reserved for forward compatibility.

23. The apparatus of claim 21, wherein the signaling indicating the resources unavailable to the one or more UEs is further based on a frequency hopping pattern.

24. The apparatus of claim 21, wherein the signaling is at least one of: cell-specific, UE-specific, or UE-group-specific.

25. The apparatus of claim 21, wherein: The periodicity of the reuse pattern indicates the resources unavailable to the one or more UEs for a duration of time; and at least one of: The time duration is triggered by at least one of downlink control information (DCI); or The time duration is part of the forward compatibility (FC) resource configuration.

26. An apparatus for wireless communication by a user equipment (UE), comprising: at least one processor configured to: receiving signaling identifying resources unavailable to the UE, wherein the signaling indicates the resources unavailable to the UE based on a periodicity of a reuse pattern; as well as using the resources unavailable to the UE for communication; as well as A memory coupled to the at least one processor.

27. The apparatus of claim 26, wherein the resources unavailable to the UE comprise resources reserved for forward compatibility.

28. The apparatus of claim 26, wherein the signaling indicating the resources unavailable to the UE is further based on a frequency hopping pattern.

29. The apparatus of claim 26, wherein the signaling is at least one of: cell-specific, UE-specific, or UE-group specific.

30. The apparatus of claim 26, wherein: The periodicity of the reuse pattern indicates the resources unavailable to the UE for a duration of time; and At least one of the following: The time duration is triggered by at least one of downlink control information (DCI); or The time duration is part of the forward compatibility (FC) resource configuration.

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