Method, communication device and infrastructure equipment
By performing the remapping process of uplink and downlink transmission within the radio interface, the problem of resource overlap and interference management in the wireless communication network is solved, efficient support for URLLC and eMBB services is achieved, and network resource utilization efficiency and transmission performance are improved.
Patent Information
- Application Number
- CN202480006370.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-01-17
- Filing Date
- 2024-01-10
- Publication Date
- 2025-08-08
AI Technical Summary
Existing wireless communication networks have difficulty efficiently supporting ultra-reliable low-latency communication (URLLC) and enhanced mobile broadband (eMBB) services when dealing with the needs of different applications and data traffic profiles, especially with challenges in resource overlap and interference management.
By determining the overlapping portions of uplink transmission and downlink transmission within the first resource set of the radio interface, remapping process is performed, resource utilization is optimized, and efficient scheduling of uplink and downlink transmission is realized.
It improves the resource utilization efficiency of wireless communication networks, reduces interference between cells and within cells, supports efficient transmission requirements of different services, and meets the requirements of low latency and high reliability of URLLC and eMBB.
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Figure CN120457767A_ABST
Abstract
Description
Background Art Technical Field
[0001] The present disclosure relates to communication devices, infrastructure equipment, and methods for more efficiently and effectively operating the communication devices and infrastructure equipment in a wireless communication network.
[0002] This application claims the Paris Convention priority of European patent application No. EP23152100.6 filed on January 17, 2023, the contents of which are hereby incorporated by reference.
[0003] Description of related art
[0004] The "background" description provided herein is for the purpose of generally presenting the context of the present disclosure. The work of the presently named inventors is neither explicitly nor implicitly admitted to be prior art with respect to the present invention to the extent described in this background section and insofar as it may not have been described as prior art at the time of filing.
[0005] Previous generation mobile telecommunication systems (such as those based on the UMTS and Long Term Evolution (LTE) architectures defined by 3GPP) are capable of supporting a wider range of services than the simple voice and messaging services provided by previous generations of mobile telecommunication systems. For example, utilizing the improved radio interface and enhanced data rates provided by LTE systems, users are able to enjoy high data rate applications, such as mobile video streaming and mobile video conferencing, that were previously only available via fixed-line data connections. Consequently, there is a strong demand for the deployment of such networks, and the coverage areas of these networks (i.e., the geographic locations where access to the network is possible) are expected to continue to grow rapidly.
[0006] Current and future wireless communication networks are expected to routinely and efficiently support communications with an ever-increasing range of devices associated with a wider range of data traffic profiles and types than existing systems are optimized to support. For example, it is expected that future wireless communication networks will be expected to efficiently support communications with devices including reduced complexity devices, machine type communication (MTC) devices, high-resolution video displays, virtual reality headsets, extended reality (XR), and the like. Some of these different types of devices may be deployed in very large numbers, such as low-complexity devices used to support the "Internet of Things," and may typically be associated with the transmission of relatively small amounts of data with relatively high latency tolerance. Other types of devices, such as those supporting high-definition video streaming, may be associated with the transmission of relatively large amounts of data with relatively low latency tolerance. Other types of devices, such as those used for autonomous vehicle communications and for other critical applications, may be characterized by the data being transmitted over a network with low latency and high reliability. Individual device types may also be associated with different traffic profiles / characteristics depending on the application they are running. For example, different considerations may be made for efficiently supporting data exchange with a smartphone when it is running a video streaming application (high downlink data) compared to when the smartphone is running an internet browsing application (sporadic uplink and downlink data) or is being used by emergency responders for voice communications in an emergency scenario (data subject to strict reliability and latency requirements).
[0007] In view of this, it is expected that current wireless communication networks (such as those that may be referred to as 5G or New Radio (NR) systems / New Radio Access Technology (RAT) systems or indeed future 6G wireless communications) and future iterations / versions of existing systems will be needed to efficiently support connections for a wide range of devices associated with different applications and different characteristic data traffic profiles and requirements.
[0008] One example of a new service is called Ultra-Reliable Low-Latency Communication (URLLC) service, which, as its name suggests, requires the transmission of data units or packets with high reliability and low communication latency. Another example of a new service is enhanced Mobile Broadband (eMBB) service, which is characterized by high capacity and requires support for up to 20 Gb / s. Therefore, URLLC and eMBB type services are challenging examples for both LTE-type communication systems and 5G / NR communication systems.
[0009] 5G NR continues to evolve, and the current work plan includes 5G-NR-advanced, where several further enhancements are expected, especially to support new use cases / scenarios with higher requirements. The desire to support these new use cases and scenarios brings new challenges that need to be addressed for efficient communication processing in wireless communication systems. Summary of the Invention
[0010] The present disclosure may help to solve or alleviate at least some of the problems discussed above.
[0011] Some embodiments of the present technology may provide a first method of operating a communications device, the method comprising determining that the communications device transmits an uplink transmission to a wireless communications network at least partially within a first set of resources of a wireless radio interface, the first set of resources being within a first frequency range; determining that a portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource units configured for transmitting downlink transmissions within the first frequency range; performing a remapping process on at least a portion of the uplink transmission; and, after performing the remapping process, transmitting the uplink transmission to the wireless communications network.
[0012] Some other embodiments of the present technology may provide a second method of operating a communications device, the method comprising: determining that the communications device will receive a downlink transmission from a wireless communications network at least partially within a first set of resources of a wireless radio interface, the first set of resources being within a first frequency range; determining that a portion of the downlink transmission overlaps at least partially in time and frequency with one or more resource units configured for transmitting uplink transmissions within the first frequency range; determining that the wireless communications network will perform a remapping procedure on at least a portion of the downlink transmission; and receiving the downlink transmission from the wireless communications network according to the determined remapping procedure.
[0013] In addition to methods of operating communication devices, such embodiments of the present technology also relate to methods of operating infrastructure equipment, communication devices and infrastructure equipment, circuit systems for communication devices and infrastructure equipment, computer programs and computer-readable storage media that can allow more efficient and effective use of radio resources by communication devices operating in a wireless communication network.
[0014] Accordingly, aspects and features of the disclosure are defined in the appended claims.
[0015] It should be understood that both the foregoing general description and the following detailed description are exemplary and not restrictive of the present technology.The described embodiments, together with further advantages, will be best understood by reference to the following detailed description taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] A more complete understanding of the present disclosure and many of its attendant advantages will be readily obtained, as they become better appreciated by reference to the following detailed description when considered in conjunction with the accompanying drawings, in which like reference numerals designate identical or corresponding parts throughout the several views, and in which:
[0017] Figure 1schematically illustrates some aspects of an LTE-type wireless telecommunications system that may be configured to operate in accordance with certain embodiments of the present disclosure;
[0018] Figure 2 schematically illustrates some aspects of a new radio access technology (RAT) wireless telecommunications system that may be configured to operate in accordance with certain embodiments of the present disclosure;
[0019] Figure 3 is a schematic block diagram of example infrastructure equipment and communication devices that may be configured to operate in accordance with certain embodiments of the present disclosure;
[0020] Figure 4 schematically illustrates an example of inter-cell cross-link interference;
[0021] Figure 5 illustrates an example method for accounting for inter-cell cross-link interference;
[0022] Figure 6 schematically illustrates an example of intra-cell cross-link interference;
[0023] Figure 7 illustrates a first example of partitioning the system bandwidth into dedicated non-overlapping uplink and downlink subbands;
[0024] Figure 8 illustrates a second example of partitioning the system bandwidth into dedicated non-overlapping uplink and downlink subbands extending across multiple time slots;
[0025] Figure 9 illustrates a third example of partitioning the system bandwidth into dedicated non-overlapping uplink and downlink subbands within a single time slot;
[0026] Figure 10 shows how uplink transmissions may overlap downlink subbands due to the uplink transmissions crossing the boundary between SBFD symbols and non-SBFD symbols;
[0027] Figure 11 shows a partially schematic, partial message flow diagram representation of a first wireless communication system including a communication apparatus and infrastructure equipment according to an embodiment of the present technology;
[0028] Figure 12 shows a partially schematic, partial message flow diagram representation of a second wireless communication system including a communication apparatus and infrastructure equipment according to an embodiment of the present technology;
[0029] Figure 13 illustrates a first example of a remapping process for uplink transmissions that collide with downlink subbands according to an embodiment of the present technology;
[0030] Figure 14 illustrates a first example of a remapping process for a downlink transmission that collides with an uplink subband, in accordance with an embodiment of the present technology, wherein the entire downlink transmission is remapped;
[0031] Figure 15 illustrates a second example of a remapping process for downlink transmissions that collide with uplink subbands, in accordance with an embodiment of the present technology, wherein only the collided portion of the downlink transmission is remapped;
[0032] Figure 16 illustrates a third example of a remapping procedure for downlink transmissions that collide with uplink subbands, wherein the collided portion of the downlink transmission is discarded, in accordance with an embodiment of the present technology;
[0033] Figure 17 illustrates a second example of a remapping process for uplink transmissions that collide with downlink subbands, in accordance with an embodiment of the present technology, wherein the collided portion of the uplink transmission is remapped to a pre-configured supplemental uplink resource;
[0034] Figure 18 illustrates a fourth example of a remapping process for a downlink transmission that conflicts with an uplink subband, wherein the entire downlink transmission is reflected across a reflection point, in accordance with an embodiment of the present technology;
[0035] Figure 19 A flowchart illustrating a first process of communication in a communication system according to an embodiment of the present technology is shown; and
[0036] Figure 20 A flow chart illustrating a second process of communication in a communication system according to an embodiment of the present technology is shown. DETAILED DESCRIPTION
[0037] Long Term Evolution Advanced Radio Access Technology (4G)
[0038] Figure 1 A schematic diagram is provided illustrating certain basic functionality of a mobile telecommunication network / system 6, which typically operates according to LTE principles, but which may also support other radio access technologies, and which may be suitable for implementing embodiments of the present disclosure as described herein. Figure 1Certain aspects of the various elements of the telecommunications network and their corresponding modes of operation are well known and defined in relevant standards managed by the 3GPP (RTM) body and are also described in a number of books on the subject (e.g., Holma H. and Toskala A [1]). It will be understood that operational aspects of the telecommunications network discussed herein that are not specifically described (e.g., with respect to specific communication protocols and physical channels used for communication between the different elements) may be implemented in accordance with any known techniques (e.g., in accordance with relevant standards and known proposed modifications and additions to relevant standards).
[0039] The network 6 comprises a plurality of base stations 1 connected to a core network 2. Each base station provides a coverage area 3 (ie a cell) within which data can be communicated to and from a communication device 4. Figure 1 Each base station 1 is shown as a single entity, but those skilled in the art will understand that some functions of a base station may be performed by different interconnected elements, such as an antenna (or multiple antennas), a remote radio head, amplifiers, etc. One or more base stations may together form a radio access network.
[0040] Data is transmitted from the base station 1 to the communication device 4 within its respective coverage area 3 via a radio downlink (DL). Data is transmitted from the communication device 4 to the base station 1 via a radio uplink (UL). The core network 2 routes data to and from the communication device 4 via the respective base station 1 and provides functions such as authentication, mobility management, billing, etc. The terminal device may also be referred to as a mobile station, user equipment (UE), user terminal, mobile radio, communication device, etc. The services provided by the core network 2 may include connection to the internet or to an external telephone service. The core network 2 may also track the location of the communication device 4 so that it can efficiently contact (i.e., page) the communication device 4 to transmit downlink data towards the communication device 4.
[0041] A base station, as an example of network infrastructure equipment, may also be referred to as a transceiver station, Node B, eNode B, eNB, gNode B, gNB, etc. In this regard, different terms are often associated with different generations of wireless telecommunication systems for elements that provide broadly comparable functionality. However, certain embodiments of the present disclosure can be implemented equally across different generations of wireless telecommunication systems, and for simplicity, certain terms may be used regardless of the underlying network architecture. That is, the use of a particular term with respect to certain example implementations is not intended to indicate that these implementations are limited to a particular generation of networks that may be most closely associated with that particular term.
[0042] New Radio Access Technology (5G)
[0043] It is expected that systems incorporating NR technology will support different services (or service types), which may be characterized by different requirements for latency, data rate, and / or reliability. For example, enhanced mobile broadband (eMBB) services are characterized by high capacity, requiring support for up to 20 Gb / s. Ultra-reliable low latency communication (URLLC) services require a single transmission of a 32-byte packet from the radio protocol layer 2 / 3 SDU entry point to the radio protocol layer 2 / 3 SDU exit point of the radio interface within 1 ms, with a reliability of 1-10. -5 (99.999%) or higher (99.9999%)[2].
[0044] Massive machine-type communications (mMTC) is another example of a service that can be supported by NR-based communication networks. Furthermore, the system is expected to support further enhancements related to the Industrial Internet of Things (IIoT) to support services with new requirements for high availability, high reliability, low latency, and, in some cases, high-precision positioning.
[0045] Figure 2 An example configuration of a wireless communication network using some terminology proposed for and used in NR and 5G is shown in FIG. Figure 2 In the figure, a plurality of transmit and receive points (TRPs) 10 are connected to distributed control units (DUs) 41, 42 via connection interfaces represented by lines 16. Each of the TRPs 10 is arranged to send and receive signals via a wireless access interface within the radio frequency bandwidth available to the wireless communication network. Thus, each of the TRPs 10 forms a cell of the wireless communication network as represented by circle 12, within a range for performing radio communications via the wireless access interface. In this way, a wireless communication device 14 within the radio communication range provided by the cell 12 can send signals to and receive signals from the TRP 10 via the wireless access interface. Each of the distributed units 41, 42 is connected to a central unit (CU) 40 (which may be referred to as a control node) via an interface 46. The central unit 40 is then connected to a core network 20, which may contain all other functionality required to transmit data for transmission to and from the wireless communication devices, and the core network 20 may be connected to other networks 30.
[0046] Figure 2 The elements of the wireless access network shown may be similar to those described with respect to Figure 1 The corresponding elements of the LTE network described in the examples operate in a similar manner. It will be understood that Figure 2The operational aspects of the presented telecommunications networks, as well as operational aspects of other networks not specifically described herein that are discussed in accordance with embodiments of the present disclosure (e.g., with respect to specific communication protocols and physical channels used for communication between different elements), may be implemented in accordance with any known technology (e.g., in accordance with currently used methods for implementing such operational aspects of wireless telecommunications systems, e.g., in accordance with relevant standards).
[0047] Figure 2 The TRP 10 of the new RAT network may have, in part, functionality corresponding to a base station or eNodeB of an LTE network. Similarly, the communication device 14 may have functionality corresponding to a UE device 4 known for operating with an LTE network. It will therefore be understood that operational aspects of the new RAT network (e.g., with respect to the specific communication protocols and physical channels used for communication between different elements) may differ from those known from LTE or other known mobile telecommunications standards. However, it will also be understood that each of the core network components, base stations, and communication devices of the new RAT network will be functionally similar to the core network components, base stations, and communication devices, respectively, of an LTE wireless communication network.
[0048] In terms of broad top-level functionality, connections to Figure 2 The core network 20 of the presented new RAT telecommunication system can be broadly considered to be similar to Figure 1 The core network 2 presented corresponds to the core network 2, and the corresponding central unit 40 and its associated distributed units / TRP 10 can be broadly considered to provide Figure 1 The term network infrastructure equipment / access node may be used to encompass these elements and more conventional base station type elements of a wireless telecommunications system. Depending on the application at hand, the responsibility for scheduling transmissions on the radio interface between the corresponding distributed units and the communication device may lie with the control node / central unit and / or the distributed unit / TRP. The communication device 14 is Figure 2 The communication device 14 is presented as being located within the coverage area of the first communication cell 12. The communication device 14 can therefore exchange signaling with the first central unit 40 in the first communication cell 12 via one of the distributed units / TRPs 10 associated with the first communication cell 12.
[0049] You will also understand that Figure 2 Only one example of the proposed architecture for a new RAT based telecommunication system is presented, wherein the method according to the principles described herein may be employed, and the functionalities disclosed herein may also be applied in respect of wireless telecommunication systems having a different architecture.
[0050] Thus, certain embodiments of the present disclosure as discussed herein may be implemented according to various architectures such as Figure 1 and Figure 2) are implemented in a wireless telecommunications system / network. It will therefore be understood that the particular wireless telecommunications architecture in any given implementation is not particularly important to the principles described herein. In this regard, certain embodiments of the present disclosure may generally be described in the context of communications between network infrastructure equipment / access nodes and communication devices, where the particular nature of the network infrastructure equipment / access nodes and communication devices will depend on the network infrastructure used for the implementation at hand. For example, in some scenarios, the network infrastructure equipment / access nodes may include base stations (such as, for example, Figure 1 The LTE type base station 1 shown is suitable for providing the functionality according to the principles described herein, while in other examples the network infrastructure equipment may include Figure 2 A control unit / control node 40 and / or TRP 10 of the type shown is adapted to provide functionality according to the principles described herein.
[0051] Figure 3 Provided Figure 2 A more detailed schematic diagram of some components of the network is shown. Figure 3 In the simplified presentation, Figure 2 The illustrated TRP 10 includes a wireless transmitter 30, a wireless receiver 32, and a controller or control processor 34 operable to control the transmitter 30 and wireless receiver 32 to transmit and receive radio signals to one or more UEs 14 within the cell 12 formed by the TRP 10. Figure 3 As shown, the example UE 14 is shown to include corresponding transmitter 49, receiver 48 and controller 44, which is configured to control the transmitter 49 and receiver 48 to transmit signals representing uplink data to the wireless communication network via the wireless access interface formed by the TRP 10, and to receive downlink data as signals transmitted by the transmitter 30 and received by the receiver 48 in accordance with conventional operation.
[0052] The transmitters 30, 49 and receivers 32, 48 (as well as other transmitters, receivers, and transceivers described with respect to the examples and embodiments of the present disclosure) may include radio frequency filters and amplifiers as well as signal processing components and devices to transmit and receive radio signals according to, for example, the 5G / NR standard. The controllers 34, 44 (as well as other controllers described with respect to the examples and embodiments of the present disclosure) may be, for example, a microprocessor, a CPU, or a dedicated chipset configured to execute instructions stored on a computer-readable medium such as a non-volatile memory. The processing steps described herein may be performed by, for example, a microprocessor in combination with a random access memory, the microprocessor operating in accordance with instructions stored on a computer-readable medium. For ease of presentation, the following are provided. Figure 3The transmitter, receiver, and controller are schematically shown as separate elements. However, it will be understood that the functionality of these elements can be provided in a variety of different ways, such as using one or more appropriately programmed programmable computers, or one or more appropriately configured application specific integrated circuits / circuitry / chips / chip sets. It will be understood that infrastructure equipment / TRP / base station and UE / communication device will typically include various other elements associated with their operating functionality.
[0053] like Figure 3 As shown, the TRP 10 also includes a network interface 50 that is connected to the DU 42 via the physical interface 16. Thus, the network interface 50 provides a communication link for data and signaling traffic from the TRP 10 via the DU 42 and the CU 40 to the core network 20.
[0054] The interface 46 between the DU 42 and the CU 40 is referred to as the F1 interface, which can be a physical interface or a logical interface. The F1 interface 46 between the CU and the DU can operate in accordance with the specifications 3GPP TS 38.470 and 3GPP TS 38.473 and can be formed by optical fiber or other wired or wireless high-bandwidth connections. In one example, the connection 16 from the TRP 10 to the DU 42 is via optical fiber. The connection between the TRP 10 and the core network 20 can generally be referred to as a backhaul, which includes the interface 16 from the network interface 50 of the TRP 10 to the DU 42 and the F1 interface 46 from the DU 42 to the CU 40.
[0055] Full-duplex time division duplex (FD-TDD)
[0056] NR / 5G networks can operate using time division duplexing (TDD), in which an entire frequency band or carrier is switched to downlink transmission or uplink transmission in one time period and can be switched to the other of the downlink transmission or uplink transmission in a later time period. Currently, TDD operates in half-duplex mode (HD-TDD), in which the gNB or UE can send or receive packets at a given time, but not simultaneously. As wireless networks transition from NR to 5G-Advanced networks, a new feature proposed for such networks is to enhance the duplex operation of time division duplexing (TDD) by enabling full-duplex operation in TDD (FD-TDD) [3], [4].
[0057] Motivations for enhancing synchronous operation of TDD include improved system capacity, reduced latency, and improved uplink coverage. For example, in current HD-TDD systems, OFDM symbols are semi-statically allocated for use in either the DL or UL direction. Therefore, if one direction experiences little or no data, the idle resources cannot be used in the other direction, or at best, are underutilized. However, if resources can be used for both DL and UL data simultaneously (as in FD-TDD), resource utilization in the system can be improved. Furthermore, in current HD-TDD systems, UEs can receive DL data but cannot simultaneously transmit UL data, which introduces latency. If the gNB or UE is allowed to transmit and receive data simultaneously (as in FD-TDD), traffic latency will be improved. Furthermore, when located near the cell edge, UEs are typically limited in UL transmission. While allocating more time domain resources to UL transmission (e.g., duplication) can improve UE coverage at the cell edge, if the UL direction is allocated more time resources, fewer time resources can be allocated to the DL direction, which can introduce system imbalance. Enabling FD-TDD will help allow the UE to be allocated more UL time resources when needed without sacrificing DL time resources.
[0058] In FD-TDD, the gNB can simultaneously transmit and receive data to and from a UE on the same frequency band. Additionally, a UE can operate in either HD-TDD or FD-TDD mode, depending on its capabilities. For example, when a UE is only capable of HD-TDD, FD-TDD is implemented at the gNB by scheduling DL transmissions to a first UE and UL transmissions from a second UE within the same Orthogonal Frequency Division Multiplexing (OFDM) symbol (i.e., simultaneously). Conversely, when a UE is capable of FD-TDD, FD-TDD is implemented at both the gNB and the UE, in which case the gNB can simultaneously schedule the UE with DL and UL transmissions within the same OFDM symbol by scheduling the DL and UL transmissions at different frequencies (e.g., physical resource blocks (PRBs)) within the system bandwidth. UEs that support FD-TDD require more complex hardware than UEs that only support HD-TDD. Current 5G network development is primarily focused on enabling FD-TDD at the gNB when the UE is operating in HD-TDD mode. This allows half-duplex legacy TDD UEs to benefit from FD-TDD operation, reducing complexity at the UE and enabling faster introduction of FD-TDD to the market.
[0059] Cross-link interference (CLI) between cells
[0060] In NR systems, the slot format (i.e., the allocation of DL and UL OFDM symbols in a slot) can be semi-statically or dynamically configured, in which case each OFDM symbol (OS) in a slot can be configured as downlink (DL), uplink (UL), or flexible (F). OFDM symbols semi-statically configured as flexible can be dynamically indicated as DL, UL, or remain flexible through a dynamic slot format indicator (SFI), which is transmitted in a group common (GC) DCI using DCI format 2_0, in which case the CRC of the GC-DCI is masked with the SFI-RNTI. Flexible OFDM symbols that remain flexible after instructions from the SFI can be changed to DL symbols or UL symbols by DL grants or UL grants, respectively. That is, a DL grant that schedules a PDSCH that overlaps with a flexible OFDM symbol converts these flexible OFDM symbols to DL, and similarly, a UL grant that schedules a PUSCH that overlaps with a flexible OFDM symbol converts these flexible OFDM symbols to UL.
[0061] Because each gNB in the network can independently change the configuration of each OFDM symbol, either semi-statically or dynamically, it is possible for one gNB to be configured for UL and a neighboring gNB to be configured for DL in a particular OFDM symbol. This causes inter-cell cross-link interference (CLI) between the conflicting gNBs (due to UL / DL symbol collisions for one or more symbols). Inter-cell CLI occurs when a UE's UL transmission interferes with DL reception by another UE in another cell, or when a gNB's DL transmission interferes with UL reception by another gNB. In other words, inter-cell CLI is caused by non-aligned (colliding) slot formats between neighboring cells. Figure 4 Figure 2 shows an example where gNB1 411 and gNB2 412 have synchronized timeslots. In a given timeslot, gNB1's 411 timeslot format = {D,D,D,D,D,D,D,D,D,D,U,U,U,U}, while gNB2's 412 timeslot format = {D,D,D,D,D,D,D,D,D,D,D,U,U,U}, where "D" indicates DL and "U" indicates UL. Inter-cell CLI (CLI) occurs during the 11th OFDM symbol of the timeslot, during which gNB1 411 is performing UL transmission and gNB2 412 is performing DL transmission. Specifically, inter-cell CLI 441 occurs between gNB1 411 and gNB2 412, where gNB2 412's DL transmission 431 interferes with gNB1 411's UL reception 432. CLI 442 also occurs between UE1 421 and UE2 422 , where UL transmission 432 of UE1 421 interferes with DL reception 431 of UE2 422 .
[0062] Some legacy implementations attempt to reduce inter-cell CLI in TDD networks caused by flexible and dynamic slot format configurations. Two CLI measurement reports, used to manage and coordinate scheduling between neighboring gNBs, include Sounding Reference Signal (SRS), Reference Signal Received Power (RSRP), and CLI Received Signal Strength Indicator (RSSI). SRS-RSRP measures the linear average of the power contribution of SRS transmitted by UEs in neighboring cells. This is measured across configured resource elements within the considered measurement frequency bandwidth, in the time resources of the configured measurement occasions. CLI-RSSI measures the linear average of the observed total received power across the resource elements configured for measurement by the UE, at only certain OFDM symbols of the measurement time resources within the measurement bandwidth.
[0063] Both SRS-RSRP and CLI-RSSI are RRC measurements and are performed by the UE to mitigate UE-to-UE inter-cell CLI. For SRS-RSRP, the aggressor UE (i.e., a UE whose UL transmission causes interference at another UE in a neighboring cell) will transmit SRS in the uplink, and the victim UE in the neighboring cell (i.e., a UE that experiences interference due to UL transmission from a UE in a neighboring cell) will be configured with a measurement configuration that includes the SRS parameters of the aggressor UE to allow measurement of interference from the aggressor UE. Figure 5 , in which the 11th OS (OFDM symbol) of gNB1 511 and gNB2 512 causes inter-cell CLI at a particular time slot. Here, gNB1 511 has configured UE1 521 (the aggressor UE) to transmit SRS 540, and gNB2 512 has configured UE2 522 (the victim UE) to measure SRS 540. UE2 522 is provided with UE1 521's SRS configuration parameters, such as the RS sequence used, frequency resources, frequency transmission comb structure, and time resources, so that UE2 522 can measure SRS 540. In general, a UE can be configured to monitor 32 different SRSs at a maximum rate of 8 SRSs per time slot.
[0064] For CLI-RSSI measurements, the UE measures the total received power, i.e., signal and interference, according to the configured period, the start and end OFDM symbols of the time slot, and the set of frequency resource blocks (RBs). Since SRS-RSRP measures the transmissions made by a specific UE, the network can target a specific aggressor UE to reduce its transmit power and, in some cases, not schedule the aggressor UE at the same time as a victim UE reporting a high SRS-RSRP measurement. In contrast, CLI-RSSI cannot be used to identify the transmissions of a specific aggressor UE, but CLI-RSSI does provide an overall estimate of the inter-cell CLI experienced by the victim UE.
[0065] Intra-cell cross-link interference (CLI) and sub-band full-duplex (SBFD)
[0066] In addition to inter-cell CLI and long-range interference, FD-TDD also suffers from intra-cell CLI at the gNB and UE. Figure 6 6 shows an example in which a gNB 610 is capable of FD-TDD and is simultaneously receiving an UL transmission 631 from UE1 621 and sending a DL transmission 642 to UE2 622. At the gNB 610, intra-cell CLI is caused by self-interference 641 of the DL transmission 642 at the gNB's transmitter and the gNB's own receiver, which is attempting to decode the UL signal 631. At UE2 622, intra-cell CLI 632 is caused by an aggressor UE (e.g., UE1 621) transmitting in the UL 631, while a victim UE (e.g., UE2 622) is receiving the DL signal 642.
[0067] Intra-cell CLI at the gNB due to self-interference can be significant since DL transmissions can in some cases be more than 100dB stronger than UL reception. Therefore, sophisticated RF hardware and interference cancellation are required to isolate this self-interference. To reduce self-interference at the gNB, one possibility considered in [3], [4] is sub-band full duplexing (SBFD). In SBFD, the frequency resources of the TDD system bandwidth or bandwidth part (BWP) (i.e., at the UE / gNB) are divided into two or more non-overlapping sub-bands, where each sub-band can be either DL or UL [5]. In Figure 7 An example is shown in which simultaneous DL and UL transmissions occur in different non-overlapping subbands 701 to 704, i.e., in different sets of frequency resource blocks (RBs): subband #1 701, subband #2 702, subband #3 703, and subband #4 704, such that subband #1 701 and subband #3 703 are used for DL transmission, while subband #2 702 and subband #4 704 are used for UL transmission.
[0068] Although Figure 7 The system bandwidth is shown as being divided into four subbands, but essentially any number of subbands may be used. For example, the system bandwidth may be divided into three subbands, which may include two downlink subbands 701 and 703 and one uplink subband 702, although other subband arrangements are contemplated. To reduce leakage from one subband 701 to 704 to another, guard subbands 710 may be configured between the UL and DL subbands 701 to 704. Guard subbands 710 are configured between UL subband #4 704 and DL subband #3 703, between DL subband #3 703 and UL subband #2 702, and between UL subband #2 702 and DL subband #1 701. Figure 7 The arrangement of sub-bands 701 to 704 shown is only one possible arrangement of sub-bands, and other arrangements are possible, and guard bands may be used in substantially any sub-band arrangement.
[0069] SBFD may not be configured for all time slots. That is, some time slots may be full DL time slots or full UL time slots (U), while other time slots may be SBFD time slots. Figure 8 This is illustrated in the example in which five time slots are shown (labeled as time slots n, n+1, n+2, n+3 and n+4), where time slots n and n+4 are fully DL and UL, respectively. On the other hand, time slots n+1, n+2 and n+3 are SBFD slots, consisting of two DL subbands and a UL subband in the middle. SBFD can also be configured to occupy a subset of OFDM symbols within a single time slot. Figure 9 An example is shown in , where a slot is configured with SBFD consisting of two DL subbands (i.e., subband #1 901 and subband #3 903) and one UL subband (i.e., subband #2 902) in OFDM symbols 4 to 11 of the slot, while OFDM symbols 0, 1, 2, 3, 12, and 13 are fully uplink. That is, for a particular symbol, the available uplink resources (UL RBs) change depending on whether SBFD is configured. It is also possible that the UL subbands can have different sizes even between SBFD slots. This change in UL resources can be summarized by considering the slot structure as having multiple UL subbands of different sizes. For example, in Figure 9 , it can be summarized that there are two UL subbands, namely, subband #2 902 and subband #4 904, where subband #4 904 (occurring between OFDM symbols 0 to 3 and 12 and 13) is a special case where the entire BWP consists of UL resources only.
[0070] About the above Figure 8 and Figure 9In a related discussion, it can be seen that (where resources can alternate between slots or symbols at certain frequencies for both DL and UL), for example, a UL transmission that begins in UL resources in a particular frequency band or region can extend in time over one or more symbols or slots within the same frequency band or region, where the resources configured in such a frequency band or region are DL resources. To handle potential conflicts between UL transmissions and DL subbands, or indeed between DL transmissions and UL subbands, a well-defined procedure is required for UEs supporting SBFD. In other words, a procedure is required regarding how to handle UL transmissions that cross the boundary between SBFD and non-SBFD symbols or slots.
[0071] Of course, the gNB does not intentionally schedule UL or DL transmissions in such a way that they would collide with DL or UL subbands. However, there are several reasons why this might occur. For example, such an UL or DL transmission could be a repetition of the PUSCH or PDSCH that spans both SBFD symbols or slots and non-SBFD symbols or slots, or it could be a periodic transmission where the resources initially allocated for such a transmission are valid and do not cause a collision, but a repetition or later instance of the periodic transmission does collide with a subband configured for transmission in the opposite direction. For example, these resources could be semi-persistent resources or configured granted resources within which UEs can schedule their own transmissions in the uplink and periodically monitor for potential downlink transmissions. Here, the UE might schedule its own UL transmissions in resources it believes to be UL, but because these resources can be changed dynamically or semi-statically by the gNB, the UE's understanding of the resource configuration could be outdated, or these resources could have been dynamically or semi-statically changed by the time the UE sends a later repetition or periodic instance of the initially scheduled UL transmission. Those skilled in the art will of course appreciate that such examples are not exclusive, and that there are many reasons that may cause a UL transmission to collide with a DL subband in this manner, or indeed cause a DL transmission to collide with a UL subband.
[0072] Figure 10 An example of such a potential conflict is shown in Figure 9In the same manner as in the example of FIG, a time slot is configured with SBFD consisting of two DL subbands (i.e., subband #1 901 and subband #3 903) and one UL subband (i.e., subband #2 902) in OFDM symbols 4 to 11 of the time slot, while OFDM symbols 0, 1, 2, 3, 12, and 13 are fully uplink. Here, while PUSCH transmission 1002 for UE2 extends across the time slot while remaining within the UL subbands (i.e., subband #4 904 and subband #2 902), PUSCH transmission 1001 for UE1 overlaps with DL subband #3 903 in OFDM symbols 4 to 11 in the time slot. Similarly, PUSCH transmission 1003 for UE3 overlaps with DL subband #1 901 in OFDM symbols 4 to 11 in the time slot. Clearly, this presents a problem, as it is impossible for UE 1 and UE 3 to maintain transmission of PUSCH transmissions 1001 and 1003, respectively, during OFDM symbols 4 to 11 of the time slot.
[0073] Therefore, a technical problem to be solved is how to handle UL transmissions that span SBFD and non-SBFD symbols / time slots. In addition, another technical problem to be solved is whether UL transmissions that overlap with one or more DL subbands can be remapped to another location / resource within the same time slot. Here, the UL transmission may consist of a single transmission in a time slot, or may include multiple repeated transmissions within multiple time slots. Similarly, and as mentioned above, DL transmissions may also span the boundary between SBFD and non-SBFD symbols / time slots, where part or all of the DL transmission may overlap with one or more UL subbands, or some repetitions of the DL transmission may overlap with one or more UL subbands while other repetitions do not overlap. Therefore, embodiments of the present technology seek to provide solutions to such problems and propose new methods that are effective and suitable for UEs that support SBFD operation.
[0074] DL / UL transmission across SBFD and non-SBFD symbols / slots
[0075] Figure 11A partially schematic, partially message flow diagram representation of a first wireless communication system including a communication device 1101 and infrastructure equipment 1102 is shown, in accordance with at least some embodiments of the present technology. The communication device 1101 is configured to send signals to and / or receive signals from a wireless communication network, for example, to and / or from the infrastructure equipment 1102. Specifically, the communication device 1101 can be configured to send data to and / or receive data from the wireless communication network (for example, to and / or from the infrastructure equipment 1102) via a wireless radio interface provided by the wireless communication network (for example, a Uu interface between the communication device 1101 and a radio access network (RAN) including the infrastructure equipment 1102). The communication device 1101 and the infrastructure equipment 1102 each include a transceiver (or transceiver circuitry) 1101.1, 1102.1 and a controller (or controller circuitry) 1101.2, 1102.2. Each of the controllers 1101.2, 1102.2 may be, for example, a microprocessor, a CPU, or a dedicated chipset.
[0076] like Figure 11 As shown in the example, the transceiver circuit system 1101.1 and the controller circuit system 1101.2 of the communication device 1101 are configured in combination to determine 1110 that the communication device 1101 will at least partially transmit an uplink transmission to the wireless communication network (e.g., to the infrastructure equipment 1102) within a first resource set of the wireless radio interface (the first resource set is within the first frequency range), to determine 1120 that a portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource units configured for transmitting downlink transmissions within the first frequency range, to perform 1130 a remapping process on at least a portion of the uplink transmission, and to transmit 1140 the uplink transmission to the wireless communication network (e.g., to the infrastructure equipment 1102) after performing the remapping process 1130.
[0077] Here, those skilled in the art will appreciate that one or more resource units configured for transmitting downlink transmissions in a first frequency range may be SBFD resources, wherein a portion of the uplink transmission at least partially overlaps in time and frequency with the first frequency range (e.g., in Figure 11In other words, one or more resource elements configured for transmitting downlink transmissions within the first frequency range form a downlink subband during a specified time period, wherein the downlink subband is adjacent to one or more uplink subbands during the specified time period (and in practice one or more other downlink subbands may also exist within the system bandwidth, wherein the SBFD configuration is not limited to any particular configuration herein). For example, the SBFD configuration may look similar to Figure 7 The configuration shown, wherein a portion of the uplink transmission is at least partially time and frequency separated from the downlink subband (such as Figure 7 The subbands #3703 shown overlap, or the SBFD configuration can look similar to Figure 10 1002) is at least partially aligned in time and frequency with downlink subbands (e.g., transmissions such as PUSCH 1002). Figure 10 Subband #2 902) is shown overlapping.
[0078] Figure 12 A partially schematic, partially message flow diagram representation of a second wireless communication system including a communication device 1201 and infrastructure equipment 1202 is shown, in accordance with at least some embodiments of the present technology. The communication device 1201 is configured to send signals to and / or receive signals from a wireless communication network, for example, to and / or from the infrastructure equipment 1202. Specifically, the communication device 1201 can be configured to send data to and / or receive data from the wireless communication network (for example, to and / or from the infrastructure equipment 1202) via a wireless radio interface provided by the wireless communication network (for example, a Uu interface between the communication device 1201 and a radio access network (RAN) including the infrastructure equipment 1202). The communication device 1201 and the infrastructure equipment 1202 each include a transceiver (or transceiver circuitry) 1201.1, 1202.1 and a controller (or controller circuitry) 1201.2, 1202.2. Each of the controllers 1201.2, 1202.2 may be, for example, a microprocessor, a CPU, or a dedicated chipset.
[0079] like Figure 12As shown in the example, the transceiver circuit system 1201.1 and the controller circuit system 1201.2 of the communication device 1201 are configured in combination to determine that the communication device will receive 1210 a downlink transmission from the wireless communication network (e.g., from the infrastructure equipment 1202) at least partially within a first resource set of the wireless radio interface (the first resource set is within the first frequency range), to determine 1220 that a portion of the downlink transmission overlaps at least partially in time and frequency with one or more resource units configured for transmitting uplink transmissions within the first frequency range, to determine 1230 that the wireless communication network (e.g., the infrastructure equipment 1202) will perform a remapping process on at least a portion of the downlink transmission, and to receive 1240 the downlink transmission from the wireless communication network (e.g., from the infrastructure equipment 1202) according to the determined remapping process.
[0080] Here, as mentioned above Figure 11 Similarly, those skilled in the art will appreciate that one or more resource units configured to transmit uplink transmissions within the first frequency range may be SBFD resources, with a portion of the downlink transmissions at least partially overlapping in time and frequency (e.g., in the first frequency range). Figure 12 In other words, one or more resource elements configured for transmitting uplink transmissions within the first frequency range form an uplink subband during a specified time period, wherein the uplink subband is adjacent to one or more downlink subbands during the specified time period (and in practice one or more other uplink subbands may also exist within the system bandwidth, wherein the SBFD configuration is not limited to any particular configuration herein). For example, the SBFD configuration may look similar to Figure 7 , wherein a portion of the downlink transmission is at least partially time- and frequency-separated from the uplink subband (such as Figure 7 Subband #2 702) is shown overlapping.
[0081] Here, it will be understood by those skilled in the art that the portion of the uplink / downlink transmission referred to in the above paragraphs and elsewhere herein (i.e., the portion that overlaps / collides with the resources configured for transmission in the opposite direction) is not necessarily the initial transmission, but may instead be a repetition or a repeated portion of that initial transmission. Alternatively, such a transmission (if in the uplink) may be, for example, an uplink transmission performed by the communication device using a pre-configured periodic uplink resource (e.g., CG-PUSCH), or if the transmission is in the downlink, it may be, for example, a downlink reception monitored by the communication device on a pre-configured periodic downlink resource (e.g., SPS). Herein, as mentioned above in Figure 11 and Figure 12The "first set of resources" described in the examples of [ 15 ] can be, for example, a configured granted resource, or an allocated first set of resources with a preset or dynamically configured number of repetitions to be followed, where one (or more) of the repetitions is part of a subband conflict with the opposite direction. As described above, the gNB is less likely to allocate a transmission that it knows will cause a conflict with resources in the opposite direction, but there are still a variety of reasons why such a conflict may occur. The examples described in this paragraph and elsewhere herein as to why this may occur are not intended to be limiting.
[0082] Essentially, embodiments of the present technology propose that when there is a transmission that spans both SBFD and non-SBFD symbols or time slots (or indeed any other feasible time resource, such as sub-slots), the UE performs a remapping of the transmission to another frequency resource in a sub-band (which may be SBFD or non-SBFD) of the same time slot or other time resource.
[0083] In some arrangements of embodiments of the present technology, if a portion of a DL / UL transmission collides with a UL / DL subband, the portion that experienced the collision is remapped. In other words, the remapping process may include shifting only a portion of the uplink or downlink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range that is different from the first frequency range (different in frequency but not in time).
[0084] For example, if a UE’s UL transmission collides with a DL subband and if there is an available UL SBFD subband on the same BWP, the gNB / network may indicate that the UL transmission is to be remapped to a different frequency resource. Figure 13 An example of such an arrangement is shown in Figure 10 In the same manner as in the example of FIG, a time slot is configured with SBFD consisting of two DL subbands (i.e., subband #1 901 and subband #3 903) and one UL subband (i.e., subband #2 902) in OFDM symbols 4 to 11 of the time slot, while OFDM symbols 0, 1, 2, 3, 12, and 13 are fully uplink. Here, while PUSCH transmission 1002 for UE2 extends across the time slot while remaining within the UL subbands (i.e., subband #4 904 and subband #2 902), PUSCH transmission 1001 for UE1 overlaps with DL subband #3 903 in OFDM symbols 4 to 11 in the time slot. Similarly, PUSCH transmission 1003 for UE3 overlaps with DL subband #1 901 in OFDM symbols 4 to 11 in the time slot.
[0085] exist Figure 13In the example shown in FIG4 , where a portion of the PUSCH 1001 for UE1 will collide with DL subband #3 903, this portion of the PUSCH resource 1001 is remapped to another UL frequency resource 1301 in the UL SBFD subband (i.e., UL subband #2 902) of the same time slot. The PUSCH resource 1002 for UE2 will not collide with any DL subband, so UE2 can continuously transmit the PUSCH 1002 as originally allocated.
[0086] In some arrangements of embodiments of the present technology, the gNB indicates whether remapping of the conflicting portion involves remapping the conflicting portion to another frequency resource. In other words, the communications device may be configured to receive a remapping control signal from the wireless communication network (e.g., from infrastructure equipment) indicating that the communications device will perform a remapping procedure or that the wireless communication network (e.g., infrastructure equipment / gNB) will perform a remapping procedure. Here, for uplink signals for which the communications device is to perform a remapping procedure, the remapping control signal may indicate whether the remapping procedure will include the communications device shifting at least a portion of the uplink transmission in frequency. Here, the indication that the remapping procedure includes the communications device shifting at least a portion of the uplink transmission in frequency may apply to both the entire uplink transmission or the conflicting portion of the UL transmission, and this may be specifically indicated by the gNB in the remapping control signal or in a separate indication (e.g., a semi-static configuration), may be determined by the UE based on other information or parameter values, or may be set in the specification, etc. Here, the shift in frequency may be a shift from a (previously defined) first set of resources to a second set of resources within a second frequency range that is not different from the first frequency range.
[0087] The indication may directly indicate the other frequency resources (i.e., the second set of resources). In other words, the remapping control signal may be received from the wireless communication network (e.g., from the infrastructure device / gNB) (e.g., via semi-static signaling) and may include an indication that the communication device is to shift at least a portion of uplink transmissions to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range. Correspondingly, for downlink signals transmitted by the network, the remapping control signal may be received from the wireless communication network (e.g., from the infrastructure device / gNB) via semi-static signaling and may include an indication that the wireless communication network (e.g., the infrastructure device / gNB) is to shift at least a portion of the downlink transmissions to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
[0088] The indication may also or alternatively signal an offset (e.g., N_RB_Offset) relative to the original PUSCH or PUCCH allocation. Assuming the UE knows the location of the DL subbands in advance, as it can be semi-statically configured, the UE shifts the PUSCH resources by an amount indicated by the offset in terms of, for example, the number of PRBs (which may be a negative or positive shift). In other words, the remapping control signal may include an indication of an offset that indicates the frequency amount by which the communications device will shift at least a portion of the uplink transmission. Correspondingly, for downlink signals transmitted by the network, the remapping control signal may include an indication of an offset that indicates the frequency amount by which the wireless communications network (e.g., infrastructure equipment / gNB) will shift at least a portion of the downlink transmission.
[0089] For example, in Figure 13 , UE1 indicates with N_RB_Offset 1325 and UE1 shifts that portion of PUSCH 1001 to another frequency resource 1301 , where such frequency resource is within UL subband #2 902 .
[0090] In some arrangements of embodiments of the present technology, if the network does not indicate any such remapping, the UE discards a portion of the subband that conflicts with the subband in the opposite direction. In other words, if the remapping control signal indicates that the remapping process will not include the communication device shifting at least a portion of the uplink transmission in frequency, the remapping process may include discarding a portion of the uplink transmission, and the communication device may be configured to transmit the uplink transmission without discarding the portion of the uplink transmission. Correspondingly, for downlink signals transmitted by the network, if the remapping control signal indicates that the remapping process will not include the wireless communication network (e.g., infrastructure equipment / gNB) shifting at least a portion of the downlink transmission in frequency, the communication device may be configured to determine that the remapping process will include the wireless communication network (e.g., infrastructure equipment / gNB) discarding the portion of the downlink transmission, and the communication device may be configured to receive the downlink transmission without discarding the portion of the downlink transmission.
[0091] exist Figure 13 An example of this situation is also shown in Figure 1, where UE3's PUSCH transmission 1003 will collide with DL subband #1 901, and here, the gNB does not indicate that the PUSCH resources will be remapped to another UL resource. Therefore, UE3 discards the portion of PUSCH transmission 1003 that overlaps with DL subband #1 901.
[0092] Here, as mentioned above, in some arrangements, the portion of the uplink transmission that is discarded may be one (or more) of the multiple repetitions of the uplink signal transmitted by the communication device. In other words, the uplink transmission may consist of multiple repetitions of the uplink signal, and the remapping process includes discarding one or more repetitions of the uplink signal. In some other arrangements, if there is a conflict, the UE may discard the entire uplink transmission. In other words, the remapping process includes discarding the entire uplink transmission. Those skilled in the art will appreciate that the communication device will then not perform any uplink transmission at all.
[0093] In some arrangements of embodiments of the present technology, if a transmission is remapped due to a conflict with a subband in the opposite direction, the entire transmission is shifted. In other words, the remapping process can include shifting the entire uplink or downlink transmission to a second set of resources of the wireless radio interface, which is within a second frequency range that is different from the first frequency range (in frequency rather than time). Correspondingly, for downlink signals transmitted by the network, the remapping control signal can indicate that the remapping process will include the wireless communication network (e.g., infrastructure equipment / gNB) shifting the entire downlink transmission in frequency. This recognizes that shifting a portion of the transmission will disrupt frequency phase continuity and that the shifted portion may require additional DMRS.
[0094] exist Figure 14 , where a slot is configured with SBFD consisting of two UL subbands (i.e., subband #1 1401 and subband #3 1403) and one DL subband (i.e., subband #2 1402) in OFDM symbols 4 to 11 of the slot, while OFDM symbols 0, 1, 2, 3, 12, and 13 are fully uplink. Here, although the PDSCH 1410 transmitted by the network to UE1 occupies the entire slot, a portion of the PDSCH 1410 overlaps with UL subband #2 1402 in OFDM symbols 4 to 11 in the slot. Here, UE1 shifts the entire PDSCH 1410 (rather than just the colliding portion) to a different frequency location 1420. UE1 may shift the PDSCH 1410 to the different frequency location 1420 by an amount defined by N_RB_Offset 1425.
[0095] Figure 15Another example is shown in FIG, where a UE is scheduled to receive a PDSCH 1501 with four repetitions, starting at slot n and ending at slot n + 3. The third PDSCH repetition 1503 partially collides with the UL subband 1510, and in accordance with such an arrangement, the third PDSCH repetition 1503 is therefore shifted by a predetermined frequency offset N_RB_Offset 1525, which in this case results in it being shifted to position 1513 within the DL subband.
[0096] In some arrangements of embodiments of the present technology, if a downlink transmission or repetition is not configured or indicated to be remapped and the downlink transmission or repetition conflicts with a subband in the uplink, the downlink transmission or repetition is discarded. In other words, if the remapping control signal indicates that the remapping process will not include the wireless communication network (e.g., infrastructure equipment / gNB) shifting in frequency at least a portion of the downlink transmission (wherein a portion may refer to a single repetition), the communications device may be configured to determine that the remapping process will include the wireless communication network (e.g., infrastructure equipment / gNB) discarding (a portion or all of) the downlink transmission, and if a portion of the downlink transmission but not the entire downlink transmission is discarded, receiving the downlink transmission may include receiving the downlink transmission without discarding the portion of the downlink transmission. Here, if the portion of the downlink transmission corresponds to one (or more) of a plurality of repetitions of the downlink signal, the communications device may be configured to determine that the remapping process will include the wireless communication network (e.g., infrastructure equipment / gNB) discarding one or more repetitions of the downlink signal.
[0097] Figure 16 An example is shown in FIG, where Figure 15 Similar to the example of , PDSCH 1601 is scheduled for reception by a UE with four repetitions starting in slot n. The third PDSCH repetition 1603 (partially) collides with the UL subband 1610 in slot n+2, and based on this arrangement, the third PDSCH repetition is therefore dropped 1630. PDSCH repetitions continue in slot n+3, where the fourth PDSCH 1604 is transmitted by the network to the UE because it does not collide with any UL subband. Therefore, a UE receiving the PDSCH will not combine the third PDSCH repetition 1603 with the other PDSCH repetitions.
[0098] In the case of semi-statically configured resources (such as CG-PUSCH, SPSPDSCH, and PUCCH) with a certain set or dynamically configured periodicity, and if these resources collide with DL non-SBFD or UL non-SBFD symbols / timeslots, and if there is at least one UL SBFD subband or DL subband available on the same BWP that can carry a transmission, the UE can pre-receive an indication / signaling from the network regarding whether the transmission will be dropped or remapped to another frequency resource in an available SBFD subband on the same time slot. In other words, the first set of resources can be periodically pre-configured resources indicated to the communication device via semi-static signaling received from the wireless communication network (e.g., from infrastructure equipment / gNB). Here, the indicated second set of resources can be within the same bandwidth portion (BWP) as the first set of resources.
[0099] In some arrangements of embodiments of the present technology, the network semi-statically indicates to the UE in advance (e.g., via RRC signaling) the remapping locations of CG-PUSCH, SPS PDSCH, and PUCCH resources (see other arrangements regarding N_RB_Offset below in embodiments of the present technology). In other words, the remapping control signal may be received from the wireless communication network (e.g., from infrastructure equipment / gNB) via semi-static signaling.
[0100] In some arrangements of embodiments of the present technology, the indication is that the UE is semi-statically configured with supplemental CG-PUSCH, SPS PDSCH, or PUCCH resources in the UL SBFD subband or DL subband to use in the event of a collision. In other words, the indicated second resource set may be supplemental periodically pre-configured resources. This is possible because the gNB can pre-calculate when a collision will occur and, therefore, allocate supplemental frequency resources in the UL SBFD or DL subband for remapping.
[0101] like Figure 17 As shown in the example, the (configured grant) PUSCH resource 1711 for UE1 and the (configured grant) PUSCH resource 1712 for UE2 collide with DL subband #3 1703 and DL subband #1 1701, respectively. Therefore, the gNB has allocated supplementary resources in UL subband #2 1702 (e.g., supplementary resource 1721 for UE1 and supplementary resource 1722 for UE2), and the UEs can therefore use these resources to send the collided parts of their PUSCH transmissions. It should be understood here that such an arrangement is not limited to Figure 17 The examples in FIG. 5 illustrate PUSCH transmissions, and they also apply to other transmissions such as PUCCH (in UL) and PDSCH (in DL).
[0102] In some arrangements of embodiments of the present technology, the supplementary CG-PUSCH or PUCCH resources are located in another BWP, and the UE can autonomously switch to this BWP to transmit CG-PUSCH, SPS PDSCH or PUCCH. In other words, the indicated second resource set can be in a different BWP than the first resource set.
[0103] In some arrangements of embodiments of the present technology, this indication is dynamically signaled by a DCI that schedules PUSCH, PUCCH, or PDSCH resources in the first time. That is, a signal with N_RB_Offset or specifically the frequency resources to be shifted can be dynamically indicated to the UE. In other words, the remapping control signal can be received from the wireless communication network (e.g., from infrastructure equipment / gNB) via dynamic signaling. This DCI can be an UL grant (for PUSCH), a DL grant for PUCCH and / or PDSCH, and an activation (or deactivation) DCI for CG-PUSCH or SPS PDSCH resources.
[0104] In some arrangements of embodiments of the present technology, the offset is a list of RRC-configured values, but a value can be dynamically signaled by the scheduling DCI using one or more bits; for example, two bits can be used to select one value from four possible values. In other words, the remapping control signal includes an indication of an offset from among a plurality of preconfigured offsets, the indicated offset indicating the frequency amount by which the communications device will shift at least a portion of the uplink transmission. Correspondingly, for downlink signals transmitted by the network, the remapping control signal can include an indication of an offset from among a plurality of preconfigured offsets, the indicated offset indicating the frequency amount by which the wireless communications network (e.g., infrastructure equipment / gNB) will shift at least a portion of the downlink transmission. This dynamic signaling allows for avoiding collisions with other transmissions to or from other UEs (which also need to adjust with respect to the offsets) because those other UEs can be dynamically signaled with a value different from the (e.g., four) values.
[0105] In some arrangements of embodiments of the present technology, the offset may be semi-statically (eg, RRC) configured, and the UE may apply the offset if it determines that its DL or UL transmission collides with a UL or DL subband.
[0106] In some arrangements of embodiments of the present technology, the offset is calculated based on information defined in a specification or parameter signaled to the UE. That is, for example, the N_RB_Offset is calculated based on the subband configuration. In other words, the communication device can be configured to determine, based on the value of at least one parameter indicated to the communication device by the wireless communication network (e.g., infrastructure equipment / gNB) or based on the value of at least one parameter pre-configured by the communication device and known to the communication device, that the communication device will perform a remapping process by shifting at least a portion of the uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range that is different from the first frequency range. Here, where the second frequency range is defined as "different" from the first frequency range, this may, in some arrangements, mean that the first frequency range and the second frequency range have no common resources, or in some other arrangements, may mean that the first frequency range and the second frequency range at least partially overlap in time and frequency. Correspondingly, for downlink signals transmitted by the network, the communications device can be configured to determine, based on the value of at least one parameter indicated to the communications device by the wireless communications network (e.g., infrastructure equipment / gNB) or pre-configured and known by the communications device, that the wireless communications network (e.g., infrastructure equipment / gNB) will perform a remapping procedure by shifting at least a portion of the downlink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range. Similarly, with respect to the shifting of (at least a portion of) the uplink transmission as described above, where the second frequency range is defined as "different" from the first frequency range, this can, in some arrangements, mean that the first and second frequency ranges have no common resources, or, in some other arrangements, can mean that the first and second frequency ranges at least partially overlap in time and frequency. Here, the value of the parameter can indicate the location of the second set of resources or offset as previously described, but can also indicate (explicitly or implicitly) that remapping is to be applied.
[0107] In some arrangements of embodiments of the present technology, the offset is calculated by reflecting the scheduled transmission onto a reflection point (which may be known to the UE or dynamically or semi-statically indicated to the UE by the gNB). In other words, the communications device may be configured to determine that the communications device will perform a remapping procedure by shifting at least a portion of the uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range, wherein the communications device may be configured to determine the second set of resources by reflecting the first set of resources across a reflection line. Correspondingly, for downlink signals transmitted by the network, the communications device may be configured to determine that the wireless communications network (e.g., infrastructure equipment / gNB) will perform a remapping procedure by shifting at least a portion of the downlink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range, and the communications device may be configured to determine the second set of resources by reflecting the first set of resources across a reflection line.
[0108] Figure 18 An example is shown in FIG, where PDSCH 1810 (such as a PDSCH transmitted at an SPS opportunity or a repetition of a dynamic PDSCH) is initially scheduled for transmission by the gNB in RBs in OFDM symbols 4 to 11 that collide with UL subband #2 1802. According to such an arrangement, Figure 18 As shown, the PDSCH is "reflected" onto a reflection point 1825, thereby occupying a new set of RBs 1820 within the upper DL subband #3 1803. The reflection point 1825 may be RRC configured or may be indicated in a DCI (such as a DL grant, UL grant, or activation (or deactivation) DCI).
[0109] In some arrangements of embodiments of the present technology, a UE autonomously determines whether to remap a DL or UL transmission by determining whether the transmission conflicts with a subband in the opposite direction. In other words, the communication device may be configured to, based on determining that a portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within a first frequency range, perform a remapping process on at least a portion of the uplink transmission by shifting the at least portion of the uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range. Correspondingly, for downlink signals transmitted by the network, the communication device may be configured to, based on determining that a portion of the downlink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range, determine that a wireless communication network (e.g., infrastructure equipment / gNB) is to perform a remapping process on the at least portion of the downlink transmission by shifting the at least portion of the downlink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
[0110] Such an arrangement is beneficial for semi-statically configured transmissions that occur periodically, such as CG-PUSCH, SPS PDSCH, and PUCCH associated with SPS PDSCH. These arrangements recognize that the gNB may not be able to dynamically indicate every transmission opportunity (e.g., CG-PUSCH or SPS PDSCH opportunity) that may or may not need to be remapped, and therefore, such an arrangement enables the UE to determine the need for autonomous remapping for each transmission opportunity. The N_RB_Offset used for such remapping may be signaled or calculated according to the previously described arrangements of embodiments of the present technology.
[0111] Figure 19 A flow chart illustrating a first example process of communication in a communication system according to an embodiment of the present technology is shown. Figure 19 The process shown is a method of operating a communication device.
[0112] The method begins in step S11. The method includes, in step S12, determining that the communication device will transmit an uplink transmission to the wireless communication network at least partially within a first set of resources of a wireless radio interface, the first set of resources being within a first frequency range. In step S13, the method includes determining that a portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within the first frequency range. Then, in step S14, the process includes performing a remapping process on at least a portion of the uplink transmission. Thereafter, in step S15, the method includes transmitting the uplink transmission to the wireless communication network after performing the remapping process. The process ends in step S16.
[0113] Figure 20 A flow chart illustrating a second example process of communication in a communication system according to an embodiment of the present technology is shown. Figure 20 The process shown is a method of operating a communication device.
[0114] The method begins in step S21. The method includes, in step S22, determining that the communication device will receive a downlink transmission from the wireless communication network at least partially within a first resource set of a wireless radio interface, the first resource set being within a first frequency range. In step S23, the method includes determining that a portion of the downlink transmission overlaps, at least partially in time and frequency, with one or more resource units configured for transmitting uplink transmissions within the first frequency range. Then, in step S24, the process includes determining that the wireless communication network will perform a remapping process on at least a portion of the downlink transmission. Thereafter, in step S25, the method includes receiving a downlink transmission from the wireless communication network according to the determined remapping process. The process ends in step S26.
[0115] Those skilled in the art will understand that Figure 19 and Figure 20 The method shown may be modified according to the embodiment of the present technology. For example, other intermediate steps may be included in such a method, or the steps may be performed in any logical order. Figure 11 and Figure 12 shown (and further with respect to Figures 13 to 18While embodiments of the present technology are described using an example communication system (discussed in the example of FIG), it should be clear to those skilled in the art that embodiments of the present technology can be equally applied to other systems described herein. It will be understood by those skilled in the art that, as long as they are technically feasible, all arrangements described herein for UL transmissions (such as PUSCH transmissions or PUCCH transmissions) colliding with DL resources are correspondingly applicable to situations where DL transmissions (such as PDSCH transmissions or PDCCH transmissions) collide with UL resources, and vice versa.
[0116] Those skilled in the art will further understand that such infrastructure equipment and / or communication devices as defined herein may be further defined according to the various arrangements and implementations discussed in the preceding paragraphs. Those skilled in the art will further understand that such infrastructure equipment and communication devices as defined and described herein may form part of communication systems other than the communication systems defined in the present disclosure.
[0117] The following numbered paragraphs provide additional example aspects and features of the present technology:
[0118] Paragraph 1. A method of operating a communication device, the method comprising:
[0119] determining that the communication device is to transmit an uplink transmission to the wireless communication network at least partially within a first set of resources of a wireless radio interface, the first set of resources being within a first frequency range,
[0120] determining that a portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within a first frequency range,
[0121] performing a remapping process on at least a portion of the uplink transmission, and
[0122] After performing the remapping process, the uplink transmission is transmitted to the wireless communication network.
[0123] Paragraph 2. A method according to paragraph 1, wherein the remapping process comprises shifting only a portion of the uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
[0124] Paragraph 3. A method according to paragraph 1 or paragraph 2, wherein the remapping process includes shifting the entire uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
[0125] Paragraph 4. A method according to any one of paragraphs 1 to 3, wherein the remapping process includes discarding a portion of the uplink transmission, and transmitting the uplink transmission includes transmitting the uplink transmission without discarding a portion of the uplink transmission.
[0126] Paragraph 5. A method according to any one of paragraphs 1 to 4, wherein the remapping process includes discarding the entire uplink transmission.
[0127] Paragraph 6. A method according to any one of paragraphs 1 to 5, wherein the uplink transmission consists of multiple repetitions of the uplink signal, and the remapping process includes discarding one or more repetitions of the uplink signal.
[0128] Paragraph 7. The method according to any one of paragraphs 1 to 6, comprising:
[0129] A remapping control signal is received from the wireless communication network, the remapping control signal indicating that the communication device is to perform a remapping process, and wherein the remapping control signal indicates whether the remapping process is to include the communication device shifting at least a portion of an uplink transmission in frequency.
[0130] Paragraph 8. A method according to paragraph 7, wherein, if the remapping control signal indicates that the remapping process will not include the communication device shifting at least a portion of the uplink transmission in frequency, the remapping process includes discarding a portion of the uplink transmission, and transmitting the uplink transmission includes transmitting the uplink transmission without discarding a portion of the uplink transmission.
[0131] Paragraph 9. A method as described in paragraph 7 or paragraph 8, wherein the remapping control signal includes an indication of an offset, the offset indicating an amount of frequency by which the communication device is to shift at least a portion of the uplink transmission.
[0132] Paragraph 10. A method as described in any of paragraphs 7 to 9, wherein the remapping control signal is received from the wireless communication network via dynamic signaling.
[0133] Paragraph 11. The method of paragraph 10, wherein the remapping control signal comprises an indication of an offset among a plurality of preconfigured offsets, the indicated offset indicating an amount by which the communication device is to shift at least a portion of an uplink transmission in frequency.
[0134] Paragraph 12. A method according to any one of paragraphs 7 to 9, wherein the remapping control signal is received from the wireless communication network via semi-static signaling.
[0135] Paragraph 13. A method according to any of paragraphs 7 to 12, wherein the first set of resources is periodic pre-configured resources indicated to the communication device via semi-static signaling received from the wireless communication network.
[0136] Paragraph 14. A method according to paragraph 13, wherein the remapping control signal is received from the wireless communication network via semi-static signaling and includes an indication of a second set of resources of the wireless radio interface to which at least a portion of the uplink transmission is to be shifted by the communication device, the second set of resources being within a second frequency range different from the first frequency range.
[0137] Paragraph 15. The method of paragraph 14, wherein the indicated second set of resources is within the same bandwidth part (BWP) as the first set of resources.
[0138] Paragraph 16. A method as described in paragraph 14 or paragraph 15, wherein the indicated second set of resources is supplementary periodic pre-configured resources.
[0139] Paragraph 17. The method of paragraph 16, wherein the indicated second set of resources is within a different BWP than the first set of resources.
[0140] Paragraph 18. The method according to any one of paragraphs 1 to 17, comprising:
[0141] Determining based on a value of at least one parameter indicated by the wireless communication network to the communication device that the communication device is to perform a remapping procedure by shifting at least a portion of an uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
[0142] Paragraph 19. The method according to any one of paragraphs 1 to 18, comprising:
[0143] Determining, based on a value of at least one parameter preconfigured by and known to the communication device, that the communication device is to perform a remapping procedure by shifting at least a portion of an uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
[0144] Paragraph 20. The method according to any one of paragraphs 1 to 19, comprising:
[0145] determining that the communication device is to perform a remapping procedure by shifting at least a portion of an uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range, wherein the method comprises
[0146] The second set of resources is determined by reflecting the first set of resources across a reflection line.
[0147] Paragraph 21. The method according to any one of paragraphs 1 to 20, comprising:
[0148] Based on determining that a portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within the first frequency range, performing a remapping procedure on the at least portion of the uplink transmission by shifting the at least portion of the uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
[0149] Paragraph 22. A method according to any one of paragraphs 1 to 21, wherein one or more resource units configured for transmitting downlink transmissions within a first frequency range form a downlink subband within a specified time period, wherein the downlink subband is adjacent to one or more uplink subbands within the specified time period.
[0150] Paragraph 23. A communication device comprising:
[0151] transceiver circuitry, and
[0152] controller circuitry configured in combination with the transceiver circuitry to:
[0153] determining that the communication device is to transmit an uplink transmission to the wireless communication network at least partially within a first set of resources of the wireless radio interface, the first set of resources being within a first frequency range,
[0154] determining that a portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within a first frequency range,
[0155] performing a remapping process on at least a portion of the uplink transmission, and
[0156] After performing the remapping process, the uplink transmission is transmitted to the wireless communication network.
[0157] Paragraph 24. A circuit system for a communication device, comprising:
[0158] transceiver circuitry, and
[0159] controller circuitry configured in combination with the transceiver circuitry to:
[0160] determining that the communication device is to transmit an uplink transmission to the wireless communication network at least partially within a first set of resources of the wireless radio interface, the first set of resources being within a first frequency range,
[0161] determining that a portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within a first frequency range,
[0162] performing a remapping process on at least a portion of the uplink transmission, and
[0163] After performing the remapping process, the uplink transmission is transmitted to the wireless communication network.
[0164] Paragraph 25. A method of operating infrastructure equipment forming part of a first wireless communication network, the method comprising:
[0165] transmitting a remapping control signal to the communication device, the remapping control signal instructing the communication device to perform a remapping procedure on at least a portion of an uplink transmission received by the infrastructure device from the communication device at least partially within a first set of resources of a wireless radio interface provided by the infrastructure device, the first set of resources being within a first frequency range, wherein the portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within the first frequency range, and
[0166] An uplink transmission is received from the communication device according to the determined remapping procedure.
[0167] Paragraph 26. A method according to paragraph 25, wherein the remapping control signal indicates that the remapping process will not include the communication device shifting at least a portion of the uplink transmission in frequency, and the method comprises:
[0168] Determining that the remapping process will include the communications device dropping the portion of the uplink transmission, and wherein receiving the uplink transmission includes receiving the uplink transmission without dropping the portion of the uplink transmission.
[0169] Paragraph 27. A method according to paragraph 25 or paragraph 26, wherein the remapping control signal indicates that the remapping process will not include the communication device shifting at least a portion of the uplink transmission in frequency, and the method comprises:
[0170] Determining that the remapping process will include the communications device dropping the entire uplink transmission.
[0171] Paragraph 28. A method according to any one of paragraphs 25 to 27, wherein the uplink transmission consists of a plurality of repetitions of the uplink signal, and the remapping control signal indicates that the remapping process will not include the communication device shifting in frequency at least a portion of the uplink transmission, and the method comprises
[0172] Determining that the remapping process will include the communications device discarding one or more repetitions of the uplink signal.
[0173] Paragraph 29. A method as described in any of paragraphs 25 to 28, wherein the remapping control signal indicates that the remapping process will include the communication device shifting only a portion of the uplink transmission in frequency.
[0174] Paragraph 30. A method as described in any of paragraphs 25 to 29, wherein the remapping control signal indicates that the remapping process will include the communication device shifting the entire uplink transmission in frequency.
[0175] Paragraph 31. A method as described in any of paragraphs 25 to 30, wherein the remapping control signal includes an indication of an offset, the offset indicating an amount of frequency by which the communication device is to shift at least a portion of the uplink transmission.
[0176] Paragraph 32. The method of any of paragraphs 25 to 31, wherein the remapping control signal is transmitted by the infrastructure equipment to the communication device via dynamic signaling.
[0177] Paragraph 33. The method of paragraph 32, wherein the remapping control signal comprises an indication of an offset among a plurality of preconfigured offsets, the indicated offset indicating an amount by which the communication device is to shift at least a portion of an uplink transmission in frequency.
[0178] Paragraph 34. The method of any of paragraphs 25 to 33, wherein the remapping control signal is transmitted by the infrastructure equipment to the communication device via semi-static signaling.
[0179] Paragraph 35. A method as described in any of paragraphs 25 to 34, wherein the first set of resources is periodic pre-configured resources indicated in semi-static signaling transmitted by the infrastructure equipment to the communication device.
[0180] Paragraph 36. A method according to paragraph 35, wherein the remapping control signal is transmitted by the infrastructure equipment to the communication device via semi-static signaling and includes an indication of a second set of resources of the wireless radio interface, and at least a portion of the uplink transmission is to be shifted by the communication device to the second set of resources, the second set of resources being within a second frequency range different from the first frequency range.
[0181] Paragraph 37. The method of paragraph 36, wherein the indicated second set of resources is within the same bandwidth part (BWP) as the first set of resources.
[0182] Paragraph 38. A method as described in paragraph 36 or paragraph 37, wherein the indicated second set of resources is supplemental periodic pre-configured resources.
[0183] Paragraph 39. The method of paragraph 38, wherein the indicated second set of resources is within a different BWP than the first set of resources.
[0184] Paragraph 40. A method according to any one of paragraphs 25 to 39, wherein one or more resource units configured for transmitting downlink transmissions within a first frequency range form a downlink subband within a specified time period, wherein the downlink subband is adjacent to one or more uplink subbands within the specified time period.
[0185] Paragraph 41. An infrastructure device forming part of a first wireless communication network, the infrastructure device comprising:
[0186] transceiver circuitry, and
[0187] controller circuitry configured in combination with the transceiver circuitry to:
[0188] transmitting a remapping control signal to the communication device, the remapping control signal instructing the communication device to perform a remapping procedure on at least a portion of an uplink transmission received by the infrastructure equipment from the communication device at least partially within a first set of resources of a wireless radio interface provided by the infrastructure equipment, the first set of resources being within a first frequency range, wherein a portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within the first frequency range, and
[0189] An uplink transmission is received from the communication device according to the determined remapping procedure.
[0190] Paragraph 42. A circuit system for infrastructure equipment forming part of a first wireless communication network, the infrastructure equipment comprising:
[0191] transceiver circuitry, and
[0192] controller circuitry configured in combination with the transceiver circuitry to:
[0193] transmitting a remapping control signal to the communication device, the remapping control signal instructing the communication device to perform a remapping procedure on at least a portion of an uplink transmission received by the infrastructure equipment from the communication device at least partially within a first set of resources of a wireless radio interface provided by the infrastructure equipment, the first set of resources being within a first frequency range, wherein the portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within the first frequency range, and
[0194] An uplink transmission is received from the communication device according to the determined remapping procedure.
[0195] Paragraph 43. A wireless communication system comprising the communication apparatus of paragraph 23 and the infrastructure equipment of paragraph 41.
[0196] Paragraph 44. A method of operating a communication device, the method comprising:
[0197] determining that the communication device is to receive a downlink transmission from the wireless communication network at least partially within a first set of resources of the wireless radio interface, the first set of resources being within a first frequency range,
[0198] determining that a portion of the downlink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range,
[0199] determining that the wireless communication network will perform a remapping procedure on at least a portion of the downlink transmission, and
[0200] A downlink transmission is received from the wireless communication network according to the determined remapping procedure.
[0201] Paragraph 45. The method according to paragraph 44, comprising
[0202] A remapping control signal is received from the wireless communication network indicating that the wireless communication network is to perform a remapping process.
[0203] Paragraph 46. The method of paragraph 45, wherein if the remapping control signal indicates that the remapping process will not include the wireless communication network shifting in frequency at least a portion of the downlink transmission, the method comprises:
[0204] Determining that the remapping process will include the wireless communication network dropping the portion of the downlink transmission, and wherein receiving the downlink transmission includes receiving the downlink transmission without dropping the portion of the downlink transmission.
[0205] Paragraph 47. A method as described in paragraph 45 or paragraph 46, wherein the remapping control signal indicates that the remapping process will not include the wireless communication network shifting in frequency at least a portion of the downlink transmission, and the method comprises:
[0206] Determining that the remapping process will include the wireless communication network dropping the entire downlink transmission.
[0207] Paragraph 48. A method according to any of paragraphs 45 to 47, wherein the downlink transmission consists of a plurality of repetitions of the downlink signal, and the remapping control signal indicates that the remapping process will not include the wireless communication network shifting in frequency at least a portion of the downlink transmission, and the method comprises:
[0208] Determining that the remapping process will include the wireless communication network dropping one or more repetitions of the downlink signal.
[0209] Paragraph 49. A method as described in any of paragraphs 45 to 48, wherein the remapping control signal indicates that the remapping process will include the wireless communication network shifting in frequency only a portion of the downlink transmission.
[0210] Paragraph 50. A method as described in any of paragraphs 45 to 49, wherein the remapping control signal indicates that the remapping process will include the wireless communication network shifting the entire downlink transmission in frequency.
[0211] Paragraph 51. A method as described in any of paragraphs 45 to 50, wherein the remapping control signal includes an indication of an offset that indicates an amount by which the wireless communication network is to shift the frequency of at least a portion of the downlink transmission.
[0212] Paragraph 52. A method as described in any of paragraphs 45 to 51, wherein the remapping control signal is received from the wireless communication network via dynamic signaling.
[0213] Paragraph 53. The method of paragraph 52, wherein the remapping control signal includes an indication of an offset among a plurality of preconfigured offsets, the indicated offset indicating an amount by which the wireless communication network is to shift at least a portion of the downlink transmission in frequency.
[0214] Paragraph 54. A method as described in any of paragraphs 45 to 51, wherein the remapping control signal is received from the wireless communication network via semi-static signaling.
[0215] Paragraph 55. A method according to any of paragraphs 45 to 54, wherein the first set of resources is periodic pre-configured resources indicated to the communication device via semi-static signaling received from the wireless communication network.
[0216] Paragraph 56. A method according to paragraph 55, wherein the remapping control signal is received from the wireless communication network via semi-static signaling and includes an indication of a second set of resources of the wireless radio interface to which at least a portion of the downlink transmission is to be shifted by the wireless communication network, the second set of resources being within a second frequency range different from the first frequency range.
[0217] Paragraph 57. The method of paragraph 56, wherein the indicated second set of resources is within the same bandwidth part (BWP) as the first set of resources.
[0218] Paragraph 58. The method of paragraph 56 or paragraph 57, wherein the indicated second set of resources is supplemental periodic pre-configured resources.
[0219] Paragraph 59. The method of paragraph 58, wherein the indicated second set of resources is within a different BWP than the first set of resources.
[0220] Paragraph 60. The method according to any one of paragraphs 44 to 59, comprising:
[0221] Determining, based on a value of at least one parameter indicated by the wireless communication network to the communication device, that the wireless communication network is to perform a remapping procedure by shifting at least a portion of the downlink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
[0222] Paragraph 61. The method of any one of paragraphs 44 to 60, comprising:
[0223] determining, based on a value of at least one parameter preconfigured by and known to the communication device, that the wireless communication network is to perform a remapping procedure by shifting at least a portion of the downlink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
[0224] Paragraph 62. The method of any one of paragraphs 44 to 61, comprising:
[0225] determining that the wireless communication network is to perform a remapping procedure by shifting at least a portion of the downlink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range, wherein the method comprises
[0226] The second set of resources is determined by reflecting the first set of resources across a reflection line.
[0227] Paragraph 63. The method of any one of paragraphs 44 to 62, comprising:
[0228] Based on determining that a portion of the downlink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range, determining that the wireless communication network is to perform a remapping procedure on the at least portion of the downlink transmission by shifting the at least portion of the downlink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
[0229] Paragraph 64. A method according to any one of paragraphs 44 to 63, wherein one or more resource units configured for transmitting uplink transmissions within a first frequency range form an uplink subband within a specified time period, wherein the uplink subband is adjacent to one or more downlink subbands within the specified time period.
[0230] Paragraph 65. A communication device comprising:
[0231] transceiver circuitry, and
[0232] controller circuitry configured in combination with the transceiver circuitry to:
[0233] determining that the communication device is to receive a downlink transmission from the wireless communication network at least partially within a first set of resources of the wireless radio interface, the first set of resources being within a first frequency range,
[0234] determining that a portion of the downlink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range,
[0235] determining that the wireless communication network will perform a remapping procedure on at least a portion of the downlink transmission, and
[0236] A downlink transmission is received from the wireless communication network according to the determined remapping procedure.
[0237] Paragraph 66. A circuit system for a communication device, comprising:
[0238] transceiver circuitry, and
[0239] controller circuitry configured in combination with the transceiver circuitry to:
[0240] determining that the communication device is to receive a downlink transmission from the wireless communication network at least partially within a first set of resources of the wireless radio interface, the first set of resources being within a first frequency range,
[0241] determining that a portion of the downlink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range,
[0242] determining that the wireless communication network will perform a remapping procedure on at least a portion of the downlink transmission, and
[0243] A downlink transmission is received from the wireless communication network according to the determined remapping procedure.
[0244] Paragraph 67. A method of operating infrastructure equipment forming part of a first wireless communication network, the method comprising:
[0245] transmitting a remapping control signal to the communication device, the remapping control signal instructing the infrastructure equipment to perform a remapping procedure on at least a portion of a downlink transmission transmitted by the infrastructure equipment to the communication device within a first set of resources of a wireless radio interface at least partially provided by the infrastructure equipment, the first set of resources being within a first frequency range, wherein the portion of the downlink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range,
[0246] performing a remapping process on at least a portion of the downlink transmission, and
[0247] After performing the remapping process, the downlink transmission is transmitted to the communication device.
[0248] Paragraph 68. The method of paragraph 67, wherein the remapping control signal indicates that the remapping process will not include the infrastructure equipment shifting in frequency at least a portion of the downlink transmission, and the method comprises:
[0249] The portion of the downlink transmission is discarded, and wherein transmitting the downlink transmission comprises transmitting the downlink transmission without discarding the portion of the downlink transmission.
[0250] Paragraph 69. A method as described in paragraph 67 or paragraph 68, wherein the remapping control signal indicates that the remapping process will not include the infrastructure equipment shifting in frequency at least a portion of the downlink transmission, and the method comprises:
[0251] The entire downlink transmission is discarded.
[0252] Paragraph 70. A method according to any of paragraphs 67 to 69, wherein the downlink transmission consists of a plurality of repetitions of the downlink signal, and the remapping control signal indicates that the remapping process will not include the infrastructure equipment shifting in frequency at least a portion of the downlink transmission, and the method comprises:
[0253] One or more repetitions of the downlink signal are discarded.
[0254] Paragraph 71. A method as described in any of paragraphs 67 to 70, wherein the remapping control signal indicates that the remapping process will include the infrastructure equipment shifting in frequency only a portion of the downlink transmission.
[0255] Paragraph 72. A method as described in any of paragraphs 67 to 71, wherein the remapping control signal indicates that the remapping process will include the infrastructure equipment shifting the entire downlink transmission in frequency.
[0256] Paragraph 73. A method as described in any of paragraphs 67 to 72, wherein the remapping control signal includes an indication of an offset indicating an amount by which the infrastructure equipment is to shift the frequency of at least a portion of the downlink transmission.
[0257] Paragraph 74. The method of any of paragraphs 67 to 73, wherein the remapping control signal is transmitted by the infrastructure equipment to the communication device via dynamic signaling.
[0258] Paragraph 75. The method of paragraph 74, wherein the remapping control signal includes an indication of an offset among a plurality of preconfigured offsets, the indicated offset indicating an amount by which the infrastructure equipment is to shift at least a portion of the downlink transmission in frequency.
[0259] Paragraph 76. The method of any of paragraphs 67 to 75, wherein the remapping control signal is transmitted by the infrastructure equipment to the communication device via semi-static signaling.
[0260] Paragraph 77. A method as described in any of paragraphs 67 to 76, wherein the first set of resources is periodic pre-configured resources indicated in semi-static signaling transmitted by the infrastructure equipment to the communication device.
[0261] Paragraph 78. A method according to paragraph 77, wherein the remapping control signal is transmitted by the infrastructure equipment to the communication device via semi-static signaling and includes an indication of a second set of resources of the wireless radio interface, and at least a portion of the downlink transmission is to be shifted by the infrastructure equipment to the second set of resources, the second set of resources being within a second frequency range different from the first frequency range.
[0262] Paragraph 79. The method of paragraph 78, wherein the indicated second set of resources is within the same bandwidth part (BWP) as the first set of resources.
[0263] Paragraph 80. The method of paragraph 78 or paragraph 79, wherein the indicated second set of resources is supplemental periodic pre-configured resources.
[0264] Paragraph 81. The method of paragraph 80, wherein the indicated second set of resources is within a different BWP than the first set of resources.
[0265] Paragraph 82. A method according to any one of paragraphs 67 to 81, wherein one or more resource units configured for transmitting uplink transmissions within a first frequency range form an uplink subband within a specified time period, wherein the uplink subband is adjacent to one or more downlink subbands within the specified time period.
[0266] Paragraph 83. An infrastructure device forming part of a first wireless communication network, the infrastructure device comprising:
[0267] transceiver circuitry, and
[0268] controller circuitry configured in combination with the transceiver circuitry to:
[0269] transmitting a remapping control signal to the communication device, the remapping control signal instructing the infrastructure equipment to perform a remapping procedure on at least a portion of a downlink transmission transmitted by the infrastructure equipment to the communication device within a first set of resources of a wireless radio interface at least partially provided by the infrastructure equipment, the first set of resources being within a first frequency range, wherein the portion of the downlink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range,
[0270] performing a remapping process on at least a portion of the downlink transmission, and
[0271] After performing the remapping process, the downlink transmission is transmitted to the communication device.
[0272] Paragraph 84. A circuit system for infrastructure equipment forming part of a first wireless communication network, the infrastructure equipment comprising:
[0273] transceiver circuitry, and
[0274] controller circuitry configured in combination with the transceiver circuitry to:
[0275] transmitting a remapping control signal to the communication device, the remapping control signal instructing the infrastructure equipment to perform a remapping procedure on at least a portion of a downlink transmission transmitted by the infrastructure equipment to the communication device within a first set of resources of a wireless radio interface at least partially provided by the infrastructure equipment, the first set of resources being within a first frequency range, wherein the portion of the downlink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range,
[0276] performing a remapping process on at least a portion of the downlink transmission, and
[0277] After performing the remapping process, the downlink transmission is transmitted to the communication device.
[0278] Paragraph 85. A wireless communication system comprising the communication apparatus of paragraph 65 and the infrastructure equipment of paragraph 83.
[0279] Paragraph 86. A computer program comprising instructions which, when loaded onto a computer, cause the computer to perform a method according to any of paragraphs 1 to 22, 25 to 40, 44 to 64, or 67 to 82.
[0280] Paragraph 87. A non-transitory computer-readable storage medium storing the computer program according to paragraph 86.
[0281] It will be appreciated that for clarity, the above description has described embodiments with reference to different functional units, circuit systems and / or processors. However, it will be apparent that any suitable distribution of functionality between different functional units, circuit systems and / or processors may be used without departing from the embodiments.
[0282] The described embodiments can be implemented in any suitable form, including hardware, software, firmware or any combination thereof. The described embodiments can optionally be implemented at least in part as computer software running on one or more data processors and / or digital signal processors. The elements and components of any embodiment can be implemented physically, functionally and logically in any suitable manner. In fact, the function can be implemented in a single unit, in multiple units or as part of other functional units. Therefore, the disclosed embodiments can be implemented in a single unit, or can be physically and functionally distributed between different units, circuit systems and / or processors.
[0283] Although the present disclosure has been described in conjunction with some embodiments, it is not intended that the present disclosure be limited to the specific forms set forth herein. Additionally, although features may appear to be described in conjunction with specific embodiments, those skilled in the art will recognize that the various features of the described embodiments may be combined in any manner suitable for implementing the present technology.
[0284] References
[0285] [1]Holma H. and Toskala A, "LTE for UMTS OFDMA and SC-FDMA based radioaccess", John Wiley and Sons, 2009.
[0286] [2]TR 38.913, "Study on Scenarios and Requirements for Next Generation Access Technologies (Release 14)", 3rd Generation Partnership Project, v14.3.0, August 2017.
[0287] [3] RP-213591, “New SI: Study on evolution of NR duplex operation,” CMCC, RAN#94e, December 2021.
[0288] [4]RP-220633, “Revised SID: Study on evolution of NR duplex operation,” CMCC, RAN#95e, March 2022.
[0289] [5]European Patent No. 3545716.
Claims
1. A method of operating a communication device, the method comprising: determining that the communication device is to transmit an uplink transmission to a wireless communication network at least partially within a first set of resources of a wireless radio interface, the first set of resources being within a first frequency range, determining that a portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within the first frequency range, A remapping process is performed on at least the portion of the uplink transmission, and after performing the remapping process, the uplink transmission is transmitted to the wireless communication network.
2. The method according to claim 1, wherein The remapping process comprises shifting only the portion of the uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
3. The method according to claim 1, wherein The remapping process comprises shifting the entire uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
4. The method according to claim 1, wherein The remapping process includes dropping the portion of the uplink transmission, and transmitting the uplink transmission includes transmitting the uplink transmission without dropping the portion of the uplink transmission.
5. The method according to claim 1, wherein The remapping process includes discarding the entire uplink transmission.
6. The method according to claim 1, wherein The uplink transmission consists of multiple repetitions of an uplink signal, and the remapping process includes discarding one or more repetitions of the uplink signal.
7. The method according to claim 1, comprising: A remapping control signal is received from the wireless communication network, the remapping control signal indicating that the communication device is to perform the remapping process, and wherein the remapping control signal indicates whether the remapping process is to include the communication device shifting at least the portion of the uplink transmission in frequency.
8. The method according to claim 7, wherein: If the remapping control signal indicates that the remapping process will not include the communication device shifting at least the portion of the uplink transmission in frequency, the remapping process includes discarding the portion of the uplink transmission, and transmitting the uplink transmission includes transmitting the uplink transmission without discarding the portion of the uplink transmission.
9. The method according to claim 7, wherein: The remapping control signal includes an indication of an offset indicating an amount in frequency by which the communications device is to shift at least the portion of the uplink transmissions.
10. The method according to claim 7, wherein: The remapping control signal is received from the wireless communication network via dynamic signaling.
11. The method according to claim 10, wherein: The remapping control signal includes an indication of an offset among a plurality of preconfigured offsets, the indicated offset indicating an amount by which the communications device is to shift frequency of at least the portion of the uplink transmissions.
12. The method according to claim 7, wherein: The remapping control signal is received from the wireless communication network via semi-static signaling.
13. The method according to claim 7, wherein: The first set of resources is periodic pre-configured resources received from the wireless communication network via semi-static signaling and indicated to the communication device.
14. The method according to claim 13, wherein The remapping control signal is received from the wireless communication network via semi-static signaling, and the remapping control signal includes an indication of a second set of resources of the wireless radio interface to which at least the portion of the uplink transmission is to be shifted by the communication device, the second set of resources being within a second frequency range different from the first frequency range.
15. The method according to claim 14, wherein The indicated second set of resources is within the same bandwidth part BWP as the first set of resources.
16. The method according to claim 14, wherein The indicated second set of resources are supplementary periodic pre-configured resources.
17. The method according to claim 16, wherein The indicated second set of resources is within a different BWP than the first set of resources.
18. The method according to claim 1, comprising: Based on a value of at least one parameter indicated by the wireless communication network to the communication device, it is determined that the communication device is to perform the remapping procedure by shifting at least the portion of the uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
19. The method according to claim 1, comprising: Based on a value of at least one parameter preconfigured by and known to the communication device, it is determined that the communication device is to perform the remapping procedure by shifting at least the portion of the uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
20. The method of claim 1, comprising: determining that the communications device is to perform the remapping procedure by shifting at least the portion of the uplink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range, wherein the method comprises: The second set of resources is determined by reflecting the first set of resources across a reflection line.
21. The method according to claim 1, comprising: Based on determining that the portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource units configured for transmitting downlink transmissions within a first frequency range, the remapping process is performed on at least the portion of the uplink transmission by shifting at least the portion of the uplink transmission to a second set of resources of a wireless radio interface, wherein the second set of resources is in a second frequency range different from the first frequency range.
22. The method according to claim 1, wherein The one or more resource elements configured for transmitting the downlink transmission within the first frequency range form a downlink subband during a designated time period, wherein the downlink subband is adjacent to one or more uplink subbands during the designated time period.
23. A communication device comprising: transceiver circuitry, and controller circuitry configured in combination with the transceiver circuitry to: determining that the communication device is to transmit an uplink transmission to a wireless communication network at least partially within a first set of resources of a wireless radio interface, the first set of resources being within a first frequency range, determining that a portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within the first frequency range, performing a remapping process on at least said portion of said uplink transmission, and After performing the remapping process, the uplink transmission is transmitted to the wireless communication network.
24. A circuit system for a communication device, comprising: transceiver circuitry, and controller circuitry configured in combination with the transceiver circuitry to: determining that the communication device is to transmit an uplink transmission to a wireless communication network at least partially within a first set of resources of a wireless radio interface, the first set of resources being within a first frequency range, determining that a portion of the uplink transmission at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within the first frequency range, performing a remapping process on at least said portion of said uplink transmission, and After performing the remapping process, the uplink transmission is transmitted to the wireless communication network.
25. A method of operating infrastructure equipment, said infrastructure equipment forming part of a first wireless communication network, said method comprising: transmitting a remapping control signal to a communication device, the remapping control signal instructing the communication device to perform a remapping procedure on at least a portion of uplink transmissions received by the infrastructure equipment from the communication device at least partially within a first set of resources of a wireless radio interface provided by the infrastructure equipment, the first set of resources being within a first frequency range, wherein the portion of the uplink transmissions at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within the first frequency range, and The uplink transmission is received from the communication device according to the determined remapping procedure.
26. The method according to claim 25, wherein The remapping control signal indicates that the remapping process will not include the communications device shifting in frequency at least the portion of the uplink transmissions, and the method comprises: Determining that the remapping process will include the communications device dropping the portion of the uplink transmission, and wherein receiving the uplink transmission includes transmitting the uplink transmission without dropping the portion of the uplink transmission.
27. The method according to claim 25, wherein The remapping control signal indicates that the remapping process will not include the communications device shifting in frequency at least the portion of the uplink transmissions, and the method comprises: Determining that the remapping process will include the communications device dropping an entire uplink transmission.
28. The method according to claim 25, wherein The uplink transmission consists of a plurality of repetitions of an uplink signal, and the remapping control signal indicates that the remapping process will not include the communication device shifting in frequency at least the portion of the uplink transmission, and the method comprises: Determining that the remapping process will include the communications device discarding one or more repetitions of the uplink signal.
29. The method according to claim 25, wherein The remapping control signal indicates that the remapping process will include the communications device shifting in frequency only the portion of the uplink transmissions.
30. The method of claim 25, wherein: The remapping control signal indicates that the remapping process will include the communications device shifting the entire uplink transmission in frequency.
31. The method of claim 25, wherein: The remapping control signal includes an indication of an offset indicating an amount in frequency by which the communications device is to shift at least the portion of the uplink transmissions.
32. The method of claim 25, wherein: The remapping control signal is transmitted by the infrastructure equipment to the communication device via dynamic signaling.
33. The method according to claim 32, wherein The remapping control signal includes an indication of an offset among a plurality of preconfigured offsets, the indicated offset indicating an amount by which the communications device is to shift frequency of at least the portion of the uplink transmissions.
34. The method of claim 25, wherein: The remapping control signal is transmitted by the infrastructure equipment to the communication device via semi-static signaling.
35. The method of claim 25, wherein: The first set of resources is periodic pre-configured resources indicated in semi-static signaling transmitted by the infrastructure equipment to the communication device.
36. The method according to claim 35, wherein The remapping control signal is transmitted by the infrastructure equipment to the communication device via semi-static signaling, and the remapping control signal includes an indication of a second set of resources of a wireless radio interface, and at least a portion of the uplink transmission is to be shifted by the communication device to the second set of resources, the second set of resources being within a second frequency range different from the first frequency range.
37. The method according to claim 36, wherein The indicated second set of resources is within the same bandwidth part BWP as the first set of resources.
38. The method of claim 36, wherein: The indicated second set of resources are supplementary periodic pre-configured resources.
39. The method according to claim 38, wherein The indicated second set of resources is within a different BWP than the first set of resources.
40. The method of claim 25, wherein The one or more resource elements configured for transmitting the downlink transmission within the first frequency range form a downlink subband during a designated time period, wherein the downlink subband is adjacent to one or more uplink subbands during the designated time period.
41. Infrastructure equipment forming part of a first wireless communication network, the infrastructure equipment comprising: transceiver circuitry, and controller circuitry configured in combination with the transceiver circuitry to: transmitting a remapping control signal to a communication device, the remapping control signal instructing the communication device to perform a remapping procedure on at least a portion of uplink transmissions received by the infrastructure equipment from the communication device at least partially within a first set of resources of a wireless radio interface provided by the infrastructure equipment, the first set of resources being within a first frequency range, wherein the portion of the uplink transmissions at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within the first frequency range, and The uplink transmission is received from the communication device according to the determined remapping procedure.
42. A circuit system for infrastructure equipment forming part of a first wireless communication network, the infrastructure equipment comprising: transceiver circuitry, and controller circuitry configured in combination with the transceiver circuitry to: transmitting a remapping control signal to a communication device, the remapping control signal instructing the communication device to perform a remapping procedure on at least a portion of uplink transmissions received by the infrastructure equipment from the communication device at least partially within a first set of resources of a wireless radio interface provided by the infrastructure equipment, the first set of resources being within a first frequency range, wherein the portion of the uplink transmissions at least partially overlaps in time and frequency with one or more resource elements configured for transmitting downlink transmissions within the first frequency range, and The uplink transmission is received from the communication device according to the determined remapping procedure.
43. A wireless communication system comprising the communication apparatus according to claim 23 and the infrastructure equipment according to claim 41.
44. A method of operating a communication device, the method comprising: determining that the communication device is to receive a downlink transmission from a wireless communication network at least partially within a first set of resources of a wireless radio interface, the first set of resources being within a first frequency range, determining that a portion of the downlink transmission overlaps at least partially in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range, determining that the wireless communication network will perform a remapping process on at least the portion of the downlink transmission, and The downlink transmission is received from the wireless communication network according to the determined remapping procedure.
45. The method of claim 44, comprising: A remapping control signal is received from the wireless communication network, the remapping control signal indicating that the wireless communication network is to perform the remapping process.
46. The method of claim 45, wherein If the remapping control signal indicates that the remapping process will not include the wireless communication network shifting at least the portion of the downlink transmission in frequency, the method comprises: Determining that the remapping process will include the wireless communication network dropping the portion of the downlink transmission, and wherein receiving the downlink transmission includes receiving the downlink transmission without dropping the portion of the downlink transmission.
47. The method of claim 45, wherein The remapping control signal indicates that the remapping process will not include the wireless communication network shifting in frequency at least the portion of the downlink transmissions, and the method comprises: Determining that the remapping process will include the wireless communication network dropping an entire downlink transmission.
48. The method of claim 45, wherein The downlink transmissions are comprised of a plurality of repetitions of a downlink signal, and the remapping control signal indicates that the remapping process will not include the wireless communication network shifting in frequency at least a portion of the downlink transmissions, and the method comprises: Determining that the remapping process will include the wireless communication network discarding one or more repetitions of the downlink signal.
49. The method of claim 45, wherein The remapping control signal indicates that the remapping process will include the wireless communication network shifting in frequency only the portion of the downlink transmissions.
50. The method of claim 45, wherein The remapping control signal indicates that the remapping process will include the wireless communication network shifting an entire downlink transmission in frequency.
51. The method of claim 45, wherein The remapping control signal includes an indication of an offset indicating an amount by which the wireless communication network is to shift frequency of at least the portion of the downlink transmissions.
52. The method of claim 45, wherein The remapping control signal is received from the wireless communication network via dynamic signaling.
53. The method of claim 52, wherein: The remapping control signal includes an indication of an offset among a plurality of preconfigured offsets, the indicated offset indicating an amount by which the wireless communication network is to shift a frequency of at least the portion of the downlink transmissions.
54. The method of claim 45, wherein The remapping control signal is received from the wireless communication network via semi-static signaling.
55. The method of claim 45, wherein The first set of resources is periodic pre-configured resources received from the wireless communication network via semi-static signaling and indicated to the communication device.
56. The method of claim 55, wherein: The remapping control signal is received from the wireless communication network via semi-static signaling, and the remapping control signal includes an indication of a second set of resources of a wireless radio interface to which at least the portion of the downlink transmission is to be shifted by the wireless communication network, the second set of resources being within a second frequency range different from the first frequency range.
57. The method of claim 56, wherein The indicated second set of resources is within the same bandwidth part BWP as the first set of resources.
58. The method of claim 56, wherein The indicated second set of resources are supplementary periodic pre-configured resources.
59. The method of claim 58, wherein The indicated second set of resources is within a different BWP than the first set of resources.
60. The method of claim 44, comprising: determining, based on a value of at least one parameter indicated by the wireless communication network to the communication device, that the wireless communication network is to perform the remapping procedure by shifting at least the portion of the downlink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
61. The method of claim 44, comprising: determining, based on a value of at least one parameter preconfigured by and known to the communication device, that the wireless communication network is to perform the remapping procedure by shifting at least the portion of the downlink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range.
62. The method of claim 44, comprising: determining that the wireless communication network is to perform the remapping procedure by shifting at least the portion of the downlink transmission to a second set of resources of the wireless radio interface, the second set of resources being within a second frequency range different from the first frequency range, wherein the method comprises: The second set of resources is determined by reflecting the first set of resources across a reflection line.
63. The method of claim 44, comprising: Based on determining that the portion of the downlink transmission overlaps at least partially in time and frequency with one or more resource units configured for transmitting uplink transmissions within the first frequency range, determining that the wireless communication network will perform the remapping process on at least the portion of the downlink transmission by shifting at least the portion of the downlink transmission to a second set of resources of the wireless radio interface, wherein the second set of resources is within a second frequency range different from the first frequency range.
64. The method of claim 44, wherein: One or more resource elements configured for transmitting uplink transmissions within the first frequency range form an uplink subband during a designated time period, wherein the uplink subband is adjacent to one or more downlink subbands during the designated time period.
65. A communication device comprising: transceiver circuitry, and controller circuitry configured in combination with the transceiver circuitry to: determining that the communication device is to receive a downlink transmission from a wireless communication network at least partially within a first set of resources of a wireless radio interface, the first set of resources being within a first frequency range, determining that a portion of the downlink transmission overlaps at least partially in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range, determining that the wireless communication network will perform a remapping process on at least the portion of the downlink transmission, and The downlink transmission is received from the wireless communication network according to the determined remapping procedure.
66. A circuit system for a communication device, comprising: transceiver circuitry, and controller circuitry configured in combination with the transceiver circuitry to: determining that the communication device is to receive a downlink transmission from a wireless communication network at least partially within a first set of resources of a wireless radio interface, the first set of resources being within a first frequency range, determining that a portion of the downlink transmission overlaps at least partially in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range, determining that the wireless communication network will perform a remapping process on at least the portion of the downlink transmission, and The downlink transmission is received from the wireless communication network according to the determined remapping procedure.
67. A method of operating infrastructure equipment forming part of a first wireless communication network, the method comprising: transmitting a remapping control signal to a communication device, the remapping control signal instructing the infrastructure equipment to perform a remapping procedure on at least a portion of downlink transmissions transmitted by the infrastructure equipment to the communication device within a first set of resources of a wireless radio interface at least partially provided by the infrastructure equipment, the first set of resources being within a first frequency range, wherein the portion of the downlink transmissions at least partially overlaps in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range, performing said remapping process on at least said portion of said downlink transmission, and After performing the remapping process, the downlink transmission is transmitted to the communication device.
68. The method of claim 67, wherein The remapping control signal indicates that the remapping process will not include the infrastructure equipment shifting in frequency at least the portion of the downlink transmissions, and the method comprises: The portion of the downlink transmission is discarded, and wherein transmitting the downlink transmission comprises transmitting the downlink transmission without discarding the portion of the downlink transmission.
69. The method of claim 67, wherein The remapping control signal indicates that the remapping process will not include the infrastructure equipment shifting in frequency at least the portion of the downlink transmissions, and the method comprises: The entire downlink transmission is discarded.
70. The method of claim 67, wherein The downlink transmissions are comprised of a plurality of repetitions of a downlink signal, and the remapping control signal indicates that the remapping process will not include the infrastructure equipment shifting in frequency at least the portion of the downlink transmissions, and the method comprises: One or more repetitions of the downlink signal are discarded.
71. The method of claim 67, wherein The remapping control signal indicates that the remapping process will include the infrastructure equipment shifting in frequency only the portion of the downlink transmissions.
72. The method of claim 67, wherein The remapping control signal indicates that the remapping process will include the infrastructure equipment shifting an entire downlink transmission in frequency.
73. The method of claim 67, wherein The remapping control signal includes an indication of an offset indicating an amount in frequency by which the infrastructure equipment is to shift at least the portion of the downlink transmissions.
74. The method of claim 67, wherein The remapping control signal is transmitted by the infrastructure equipment to the communication device via dynamic signaling.
75. The method of claim 74, wherein The remapping control signal includes an indication of an offset among a plurality of preconfigured offsets, the indicated offset indicating an amount by which the infrastructure equipment is to shift frequency of at least the portion of the downlink transmissions.
76. The method of claim 67, wherein The remapping control signal is transmitted by the infrastructure equipment to the communication device via semi-static signaling.
77. The method of claim 67, wherein The first set of resources is periodic pre-configured resources indicated in semi-static signaling transmitted by the infrastructure equipment to the communication device.
78. The method of claim 77, wherein The remapping control signal is transmitted by the infrastructure equipment to the communication device via semi-static signaling, and the remapping control signal includes an indication of a second set of resources of the wireless radio interface, at least the portion of the downlink transmission is to be shifted by the infrastructure equipment to the second set of resources, the second set of resources being within a second frequency range different from the first frequency range.
79. The method of claim 78, wherein The indicated second set of resources is within the same bandwidth part BWP as the first set of resources.
80. The method of claim 78, wherein The indicated second set of resources are supplementary periodic pre-configured resources.
81. The method of claim 80, wherein The indicated second set of resources is within a different BWP than the first set of resources.
82. The method of claim 67, wherein The one or more resource elements configured for transmitting uplink transmissions within the first frequency range form an uplink subband during a designated time period, wherein the uplink subband is adjacent to one or more downlink subbands during the designated time period.
83. Infrastructure equipment forming part of a first wireless communication network, the infrastructure equipment comprising: transceiver circuitry, and controller circuitry configured in combination with the transceiver circuitry to: transmitting a remapping control signal to a communication device, the remapping control signal instructing the infrastructure equipment to perform a remapping procedure on at least a portion of downlink transmissions transmitted by the infrastructure equipment to the communication device within a first set of resources of a wireless radio interface at least partially provided by the infrastructure equipment, the first set of resources being within a first frequency range, wherein the portion of the downlink transmissions at least partially overlaps in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range, performing said remapping process on at least said portion of said downlink transmission, and After performing the remapping process, the downlink transmission is transmitted to the communication device.
84. A circuit system for infrastructure equipment forming part of a first wireless communication network, the infrastructure equipment comprising: transceiver circuitry, and controller circuitry configured in combination with the transceiver circuitry to: transmitting a remapping control signal to a communication device, the remapping control signal instructing the infrastructure equipment to perform a remapping procedure on at least a portion of downlink transmissions transmitted by the infrastructure equipment to the communication device within a first set of resources of a wireless radio interface at least partially provided by the infrastructure equipment, the first set of resources being within a first frequency range, wherein the portion of the downlink transmissions at least partially overlaps in time and frequency with one or more resource elements configured for transmitting uplink transmissions within the first frequency range, performing said remapping process on at least said portion of said downlink transmission, and After performing the remapping process, the downlink transmission is transmitted to the communication device.
85. A wireless communication system comprising the communication apparatus according to claim 65 and the infrastructure equipment according to claim 83.
86. A computer program comprising instructions which, when loaded onto a computer, cause the computer to perform the method of claim 1, claim 25, claim 44 or claim 67.
87. A non-transitory computer-readable storage medium storing the computer program according to claim 86.
Citation Information
Patent Citations
Wireless telecommunications apparatuses and methods
EP3545716A1