Subchannel allocation for polar coding for ambient wireless devices
By mapping information bits to subchannels based on reliability order and delegating bit reordering to the decoder, the complexity and resource use of polar coding are reduced, improving efficiency for ambient wireless devices.
Patent Information
- Application Number
- PCT/CN2024/073793
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-01-24
- Publication Date
- 2025-07-31
AI Technical Summary
Ambient wireless devices face resource-intensive and complex polar coding processes, which increase power consumption and complexity due to the need for multiple encoding steps and reordering information bits according to subchannel reliabilities.
A simplified polar coding process where ambient wireless devices map information bits to subchannels based on reliability order, and the decoder device performs decoding and reordering according to bit index order, reducing complexity and resource use at the ambient device.
This approach reduces the complexity and resource requirements at ambient wireless devices by allowing the decoder to handle bit reordering, thus minimizing power consumption and enhancing efficiency.
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Figure CN2024073793_31072025_PF_FP_ABST
Abstract
Description
SUBCHANNEL ALLOCATION FOR POLAR CODING FOR AMBIENT WIRELESS DEVICES
[0001] FIELD OF TECHNOLOGY
[0002] The following relates to wireless communications, including subchannel allocation for polar coding for ambient wireless devices.BACKGROUND
[0003] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) . Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .
[0004] Wireless communication for communication devices may include polar encoding techniques. In some examples, communication devices implementing polar encoding techniques may include encoder devices and decoder devices, which may be implemented in ambient wireless devices, network entities, and UEs.SUMMARY
[0005] The described techniques relate to improved methods, systems, devices, and apparatuses that support subchannel allocation for polar coding for ambient wireless devices. For example, the described techniques provide for communications between an encoder device and a decoder device. An encoder device, such as an ambient wireless device or ambient internet of things (IoT) wireless device, may perform a polar encoding operation on a set of information bits ordered according to a bit index order. Performing the polar encoding operation may include mapping one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence according to a reliability order of the polar code sequence, and may include outputting the mapped information bits ordered according to respective reliabilities of the respective one or more polar channels of the polar code sequence. The encoder device may transmit, in a message, a codeword including the mapped one or more information bits.
[0006] A decoder device, such as a user equipment (UE) or a network entity, may receive the codeword including the encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence, and perform a polar decoding operation on the codeword. The polar decoding operation may include decoding the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits, and reordering the one or more decoded information bits according to a bit index order.
[0007] A method for wireless communications by an encoder device is described. The method may include performing a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device, where the set of information bits is ordered according to a bit index order, where performing the polar encoding operation may include operations, features, means, or instructions for mapping one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence according to a reliability order of the polar code sequence and transmitting, in the message, a codeword including the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order.
[0008] An encoder device for wireless communications is described. The encoder device may include one or more memories storing processor executable code, and one or more processors coupled with (e.g., operatively, communicatively, functionally, electronically, or electrically) the one or more memories. The one or more processors may individually or collectively be operable to execute the code (e.g., directly, indirectly, after pre-processing, without pre-processing) to cause the encoder device to perform a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device, where the set of information bits is ordered according to a bit index order, where, to perform the polar encoding operation, the one or more processors are individually or collectively operable to execute the code (e.g., directly, indirectly, after pre-processing, without pre-processing) to cause the encoder device to map one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence accord to a reliability order of the polar code sequence and transmit, in the message, a codeword including the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order.
[0009] Another encoder device for wireless communications is described. The encoder device may include means for performing a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device, where the set of information bits is ordered according to a bit index order, where the means for performing the polar encoding operation include means for mapping one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence according to a reliability order of the polar code sequence and means for transmitting, in the message, a codeword including the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order.
[0010] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to perform a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device, where the set of information bits is ordered according to a bit index order, where the instructions to perform the polar encoding operation are executable to map one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence accord to a reliability order of the polar code sequence and transmit, in the message, a codeword including the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order.
[0011] Some examples of the method, encoder devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for outputting the mapped one or more information bits according to the reliability order of the polar code sequence such that the mapped one or more information bits may be ordered according to respective reliabilities of the respective one or more polar channels of the polar code sequence.
[0012] In some examples of the method, encoder devices, and non-transitory computer-readable medium described herein, performing the polar encoding operation may include operations, features, means, or instructions for performing the polar encoding operation in accordance with a polar coding scheme, where the polar coding scheme indicates one or more polar channels, the polar code sequence, the reliability order of the polar code sequence, one or more transmission parameters, a polar code sequence length, one or more encoding operations associated with the one or more polar channels, or a combination thereof.
[0013] In some examples of the method, encoder devices, and non-transitory computer-readable medium described herein, the bit index order may be such that each bit of the set of information bits may be ordered in increasing consecutive order according to respective bit indices.
[0014] In some examples of the method, encoder devices, and non-transitory computer-readable medium described herein, mapping the one or more information bits may include operations, features, means, or instructions for mapping each information bit of the one or more information bits to a respective polar channel of the respective one or more polar channels based on respective reliabilities of the respective one or more polar channels.
[0015] In some examples of the method, encoder devices, and non-transitory computer-readable medium described herein, the reliability order may be an ordering according to an ascending order of reliability.
[0016] Some examples of the method, encoder devices, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting the message to a wireless device, to a UE that supports an A-IoT device, or to a network entity.
[0017] In some examples of the method, encoder devices, and non-transitory computer-readable medium described herein, the encoder device may be an ambient wireless device or an ambient internet of things wireless device.
[0018] A method for wireless communications by a decoder device is described. The method may include receiving, in a message from an ambient wireless device, a codeword including an encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence associated with the polar encoding operation and performing a polar decoding operation on the codeword, where performing the polar decoding operation may include operations, features, means, or instructions for decoding the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits and reordering the one or more decoded information bits according to a bit index order.
[0019] A decoder device for wireless communications is described. The decoder device may include one or more memories storing processor executable code, and one or more processors coupled with (e.g., operatively, communicatively, functionally, electronically, or electrically) the one or more memories. The one or more processors may individually or collectively be operable to execute the code (e.g., directly, indirectly, after pre-processing, without pre-processing) to cause the decoder device to receive, in a message from an ambient wireless device, a codeword including an encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence associated with the polar encoding operation and perform a polar decoding operation on the codeword, where, to perform the polar decoding operation, the one or more processors are individually or collectively operable to execute the code (e.g., directly, indirectly, after pre-processing, without pre-processing) to cause the decoder device to decode the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits and reorder the one or more decoded information bits according to a bit index order.
[0020] Another decoder device for wireless communications is described. The decoder device may include means for receiving, in a message from an ambient wireless device, a codeword including an encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence associated with the polar encoding operation and means for performing a polar decoding operation on the codeword, where the means for performing the polar decoding operation include means for decoding the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits and means for reordering the one or more decoded information bits according to a bit index order.
[0021] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to receive, in a message from an ambient wireless device, a codeword including an encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence associated with the polar encoding operation and perform a polar decoding operation on the codeword, where the instructions to perform the polar decoding operation are executable to decode the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits and reorder the one or more decoded information bits according to a bit index order.
[0022] In some examples of the method, decoder devices, and non-transitory computer-readable medium described herein, performing the polar decoding operation may include operations, features, means, or instructions for inputting the encoded set of information bits ordered according to the reliability order of the polar code sequence such that the encoded set of information bits may be ordered according to respective reliabilities of the respective one or more polar channels.
[0023] In some examples of the method, decoder devices, and non-transitory computer-readable medium described herein, performing the polar decoding operation may include operations, features, means, or instructions for performing the polar decoding operation in accordance with a polar coding scheme.
[0024] In some examples of the method, decoder devices, and non-transitory computer-readable medium described herein, the bit index order may be such that each bit may be ordered in increasing consecutive order according to respective bit indices.
[0025] In some examples of the method, decoder devices, and non-transitory computer-readable medium described herein, performing the polar decoding operation may include operations, features, means, or instructions for de-mapping each encoded information bit of the encoded set of information bits from a respective polar channel of the respective one or more polar channels.
[0026] In some examples of the method, decoder devices, and non-transitory computer-readable medium described herein, performing the polar decoding operation may include operations, features, means, or instructions for decoding the encoded set of information bits according to the reliability order of the polar code sequence, where the reliability order may be an ascending reliability order of the respective one or more polar channels.
[0027] In some examples of the method, decoder devices, and non-transitory computer-readable medium described herein, the decoder device may be a wireless device, a user equipment that supports an ambient internet of things device, or a network entity.BRIEF DESCRIPTION OF THE DRAWINGS
[0028] FIG. 1 shows an example of a wireless communications system that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure.
[0029] FIG. 2 shows an example of a wireless communications system that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure.
[0030] FIG. 3 shows an example of a polar coding diagram that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure.
[0031] FIG. 4 shows an example of a process flow diagram that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure.
[0032] FIGs. 5 and 6 show block diagrams of devices that support subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure.
[0033] FIG. 7 shows a block diagram of a communications manager that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure.
[0034] FIG. 8 shows a diagram of a system including a device that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure.
[0035] FIGs. 9 and 10 show block diagrams of devices that support subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure.
[0036] FIG. 11 shows a block diagram of a communications manager that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure.
[0037] FIG. 12 shows a diagram of a system including a device that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure.
[0038] FIGs. 13 through 16 show flowcharts illustrating methods that support subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0039] As different systems and applications for wireless technologies develop, ambient wireless devices may become increasingly relevant. Applications may include asset management, logistics, warehousing, and manufacturing, which may include supporting ambient wireless devices. Such device may include passive internet-of-things (IoT) devices, such as radio-frequency identification (RFID) -type sensors. Network entities and user equipments (UEs) , among other wireless devices, may be required to interact with ambient wireless devices. For example, wireless devices may read and write information stored on ambient wireless devices, and may provide energy to ambient wireless devices. In some examples, wireless device may receive information transmitted by the ambient wireless devices.
[0040] Ambient wireless devices have certain limitations, such as little to no energy storage. Communications with another wireless device, such as transmitting an information-carrying signal, require resources or increase complexity, resulting in more power consumption. One such communication scheme may be polar coding, which may increase the reliability of transmission. In a polar coding scheme, the ambient wireless device may perform multiple steps to encode a message prior to transmission, which may be resource intensive and complex. For example, an encoder device, such as an ambient wireless device, may polar encode a set of information bits. Polar encoding may include ordering information bits according to reliabilities associated with subchannels of a polar code sequence, reordering the information bits according to associated bit indices, and inputting the resulting reordered bits into a polar code. Such a process may be resource intensive for an ambient wireless device, resulting in limitations related to performing polar coding.
[0041] Techniques described herein provide for a simplified polar coding process at the ambient wireless device. As part of the polar encoding, the ambient wireless device (e.g., encoder device) may map a set of information bits to respective reliabilities of subchannels (e.g., channels) of a polar code sequence, and input the resulting mapped set of information bits into a polar code. The output may be transmitted as a codeword to another wireless device (e.g., decoder device) . The wireless device may receive the codeword, and perform polar decoding. The polar decoding may include inputting the codeword into the codeword decoding operation, and outputting a decoded bit sequence. The decoded bit sequence may be ordered according to the mapped reliabilities of the subchannels of the polar code sequence. The decoder device may de-map the decoded bit sequence, or reorder the decoded bit sequence according to the bit index associated with each information bit of the set of information bits. Thus, the wireless device, and not the ambient wireless device, may perform a reordering according to bit index, resulting in reduced complexity and resource use at the ambient wireless device.
[0042] Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are further illustrated by and described with reference to a wireless communication system, a polar coding diagram, and a process flow diagram. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to subchannel allocation for polar coding for ambient wireless devices.
[0043] FIG. 1 shows an example of a wireless communications system 100 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The wireless communications system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
[0044] The network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network entities 105 and UEs 115 may wirelessly communicate via one or more communication links 125 (e.g., a radio frequency (RF) access link) . For example, a network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which a network entity 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs) .
[0045] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various types of devices, such as other UEs 115 or network entities 105, as shown in FIG. 1.
[0046] As described herein, a node of the wireless communications system 100, which may be referred to as a network node, or a wireless node, may be a network entity 105 (e.g., any network entity described herein) , a UE 115 (e.g., any UE described herein) , a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be a UE 115. As another example, a node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In yet other aspects of this example, the first, second, and third nodes may be different relative to these examples. Similarly, reference to a UE 115, network entity 105, apparatus, device, computing system, or the like may include disclosure of the UE 115, network entity 105, apparatus, device, computing system, or the like being a node. For example, disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.
[0047] In some examples, network entities 105 may communicate with the core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) . In some examples, network entities 105 may communicate with one another via a backhaul communication link 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network entities 105) or indirectly (e.g., via a core network 130) . In some examples, network entities 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e.g., in accordance with a fronthaul interface protocol) , or any combination thereof. The backhaul communication links 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., an electrical link, an optical fiber link) , one or more wireless links (e.g., a radio link, a wireless optical link) , among other examples or various combinations thereof. A UE 115 may communicate with the core network 130 via a communication link 155.
[0048] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB) , a 5G NB, a next-generation eNB (ng-eNB) , a Home NodeB, a Home eNodeB, or other suitable terminology) . In some examples, a network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as a base station 140) .
[0049] In some examples, a network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) , which may be configured to utilize a protocol stack that is physically or logically distributed among two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) . For example, a network entity 105 may include one or more of a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN Intelligent Controller (RIC) 175 (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) 180 system, or any combination thereof. An RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 105 may be located in distributed locations (e.g., separate physical locations) . In some examples, one or more network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0050] The split of functionality between a CU 160, a DU 165, and an RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combinations thereof) are performed at a CU 160, a DU 165, or an RU 170. For example, a functional split of a protocol stack may be employed between a CU 160 and a DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (e.g., layer 3 (L3) , layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaption protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU 160 may be connected to one or more DUs 165 or RUs 170, and the one or more DUs 165 or RUs 170 may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or multiple different cells (e.g., via one or more RUs 170) . In some cases, a functional split between a CU 160 and a DU 165, or between a DU 165 and an RU 170 may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170) . A CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU 160 may be connected to one or more DUs 165 via a midhaul communication link 162 (e.g., F1, F1-c, F1-u) , and a DU 165 may be connected to one or more RUs 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface) . In some examples, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 105 that are in communication via such communication links.
[0051] In wireless communications systems (e.g., wireless communications system 100) , infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to a core network 130) . In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as a donor entity or an IAB donor. One or more DUs 165 or one or more RUs 170 may be partially controlled by one or more CUs 160 associated with a donor network entity 105 (e.g., a donor base station 140) . The one or more donor network entities 105 (e.g., IAB donors) may be in communication with one or more additional network entities 105 (e.g., IAB nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120) . IAB nodes 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by DUs 165 of a coupled IAB donor. An IAB-MT may include an independent set of antennas for relay of communications with UEs 115, or may share the same antennas (e.g., of an RU 170) of an IAB node 104 used for access via the DU 165 of the IAB node 104 (e.g., referred to as virtual IAB-MT (vIAB-MT) ) . In some examples, the IAB nodes 104 may include DUs 165 that support communication links with additional entities (e.g., IAB nodes 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream) . In such cases, one or more components of the disaggregated RAN architecture (e.g., one or more IAB nodes 104 or components of IAB nodes 104) may be configured to operate according to the techniques described herein.
[0052] For instance, an access network (AN) or RAN may include communications between access nodes (e.g., an IAB donor) , IAB nodes 104, and one or more UEs 115. The IAB donor may facilitate connection between the core network 130 and the AN (e.g., via a wired or wireless connection to the core network 130) . That is, an IAB donor may refer to a RAN node with a wired or wireless connection to core network 130. The IAB donor may include a CU 160 and at least one DU 165 (e.g., and RU 170) , in which case the CU 160 may communicate with the core network 130 via an interface (e.g., a backhaul link) . IAB donor and IAB nodes 104 may communicate via an F1 interface according to a protocol that defines signaling messages (e.g., an F1 AP protocol) . Additionally, or alternatively, the CU 160 may communicate with the core network via an interface, which may be an example of a portion of backhaul link, and may communicate with other CUs 160 (e.g., a CU 160 associated with an alternative IAB donor) via an Xn-C interface, which may be an example of a portion of a backhaul link.
[0053] An IAB node 104 may refer to a RAN node that provides IAB functionality (e.g., access for UEs 115, wireless self-backhauling capabilities) . A DU 165 may act as a distributed scheduling node towards child nodes associated with the IAB node 104, and the IAB-MT may act as a scheduled node towards parent nodes associated with the IAB node 104. That is, an IAB donor may be referred to as a parent node in communication with one or more child nodes (e.g., an IAB donor may relay transmissions for UEs through one or more other IAB nodes 104) . Additionally, or alternatively, an IAB node 104 may also be referred to as a parent node or a child node to other IAB nodes 104, depending on the relay chain or configuration of the AN. Therefore, the IAB-MT entity of IAB nodes 104 may provide a Uu interface for a child IAB node 104 to receive signaling from a parent IAB node 104, and the DU interface (e.g., DUs 165) may provide a Uu interface for a parent IAB node 104 to signal to a child IAB node 104 or UE 115.
[0054] For example, IAB node 104 may be referred to as a parent node that supports communications for a child IAB node, or referred to as a child IAB node associated with an IAB donor, or both. The IAB donor may include a CU 160 with a wired or wireless connection (e.g., a backhaul communication link 120) to the core network 130 and may act as parent node to IAB nodes 104. For example, the DU 165 of IAB donor may relay transmissions to UEs 115 through IAB nodes 104, or may directly signal transmissions to a UE 115, or both. The CU 160 of IAB donor may signal communication link establishment via an F1 interface to IAB nodes 104, and the IAB nodes 104 may schedule transmissions (e.g., transmissions to the UEs 115 relayed from the IAB donor) through the DUs 165. That is, data may be relayed to and from IAB nodes 104 via signaling via an NR Uu interface to MT of the IAB node 104. Communications with IAB node 104 may be scheduled by a DU 165 of IAB donor and communications with IAB node 104 may be scheduled by DU 165 of IAB node 104.
[0055] In the case of the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support subchannel allocation for polar coding for ambient wireless devices as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., IAB nodes 104, DUs 165, CUs 160, RUs 170, RIC 175, SMO 180) .
[0056] A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer. In some examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.
[0057] The UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
[0058] The UEs 115 and the network entities 105 may wirelessly communicate with one another via one or more communication links 125 (e.g., an access link) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined physical layer structure for supporting the communication links 125. For example, a carrier used for a communication link 125 may include a portion of a RF spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR) . Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (e.g., entity, sub-entity) of a network entity 105. For example, the terms “transmitting, ” “receiving, ” or “communicating, ” when referring to a network entity 105, may refer to any portion of a network entity 105 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities 105) .
[0059] Signal waveforms transmitted via a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) . In a system employing MCM techniques, a resource element may refer to resources of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The quantity of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) , such that a relatively higher quantity of resource elements (e.g., in a transmission duration) and a relatively higher order of a modulation scheme may correspond to a relatively higher rate of communication. A wireless communications resource may refer to a combination of an RF spectrum resource, a time resource, and a spatial resource (e.g., a spatial layer, a beam) , and the use of multiple spatial resources may increase the data rate or data integrity for communications with a UE 115.
[0060] The time intervals for the network entities 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of Ts=1 / (Δfmax·Nf) seconds, for which Δfmax may represent a supported subcarrier spacing, and Nf may represent a supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) . Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
[0061] Each frame may include multiple consecutively-numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a quantity of slots. Alternatively, each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing. Each slot may include a quantity of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) . In some wireless communications systems 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
[0062] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) . In some examples, the TTI duration (e.g., a quantity of symbol periods in a TTI) may be variable. Additionally, or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
[0063] Physical channels may be multiplexed for communication using a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed for signaling via a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET) ) for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115. For example, one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to an amount of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets for sending control information to a specific UE 115.
[0064] In some examples, a network entity 105 (e.g., a base station 140, an RU 170) may be movable and therefore provide communication coverage for a moving coverage area 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, the overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.
[0065] Some UEs 115, such as MTC or IoT devices, may be low cost or low complexity devices and may provide for automated communication between machines (e.g., via Machine-to-Machine (M2M) communication) . M2M communication or MTC may refer to data communication technologies that allow devices to communicate with one another or a network entity 105 (e.g., a base station 140) without human intervention. In some examples, M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application program that uses the information or presents the information to humans interacting with the application program. Some UEs 115 may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging.
[0066] The wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) . The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private communication or group communication and may be supported by one or more services such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.
[0067] In some examples, a UE 115 may be configured to support communicating directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., in accordance with a peer-to-peer (P2P) , D2D, or sidelink protocol) . In some examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (e.g., a base station 140, an RU 170) , which may support aspects of such D2D communications being configured by (e.g., scheduled by) the network entity 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1: M) system in which each UE 115 transmits to each of the other UEs 115 in the group. In some examples, a network entity 105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 115 without an involvement of a network entity 105.
[0068] In some systems, a D2D communication link 135 may be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UEs 115) . In some examples, vehicles may communicate using vehicle-to-everything (V2X) communications, vehicle-to-vehicle (V2V) communications, or some combination of these. A vehicle may signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information relevant to a V2X system. In some examples, vehicles in a V2X system may communicate with roadside infrastructure, such as roadside units, or with the network via one or more network nodes (e.g., network entities 105, base stations 140, RUs 170) using vehicle-to-network (V2N) communications, or with both.
[0069] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
[0070] The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) . Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clusters, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to communications using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
[0071] The wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) radio access technology, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA) . Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
[0072] A network entity 105 (e.g., a base station 140, an RU 170) or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a network entity 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with a network entity 105 may be located at diverse geographic locations. A network entity 105 may include an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support RF beamforming for a signal transmitted via an antenna port.
[0073] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating along particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
[0074] UEs 115 and network entities 105, among other wireless devices, may communicate with ambient wireless devise. Some communications may employ polar coding, which may increase the reliability of transmission. In a polar coding scheme, the ambient wireless device may perform multiple steps to encode a message prior to transmission, which may be resource intensive and complex. For example, an encoder device, such as an ambient wireless device, may polar encode a set of information bits. Polar encoding may include ordering information bits according to reliabilities associated with subchannels of a polar code sequence, reordering the information bits according to associated bit indices, and inputting the resulting reordered bits into a polar code. Such a process may be resource intensive for an ambient wireless device, resulting in limitations related to performing polar coding.
[0075] Techniques described herein provide for a simplified polar coding process at the ambient wireless device. As part of the polar encoding, the ambient wireless device (e.g., encoder device) may map a set of information bits to respective reliabilities of subchannels (e.g., channels) of a polar code sequence, and input the resulting mapped set of information bits into a polar code. The output may be transmitted as a codeword to another wireless device (e.g., decoder device, UE 115, network entity 105) . The wireless device may receive the codeword, and perform polar decoding. The polar decoding may include inputting the codeword into the codeword decoding operation, and outputting a decoded bit sequence. The decoded bit sequence may be ordered according to the mapped reliabilities of the subchannels of the polar code sequence. The decoder device may de-map the decoded bit sequence, or reorder the decoded bit sequence according to the bit index associated with each information bit of the set of information bits. Thus, the wireless device, and not the ambient wireless device, may perform a reordering according to bit index, resulting in reduced complexity and resource use at the ambient wireless device. Techniques are further described and illustrated with reference to FIGs 2-4.
[0076] FIG. 2 shows an example of a wireless communications diagram 200 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. Wireless communications diagram 200 describes communications between an ambient wireless device 210 and a wireless device 205, where the communications may include polar encoded information. For example, the ambient wireless device 210 may transmit or otherwise indicate the polar encoded codeword 220 to the wireless device 205.
[0077] The ambient wireless device 210 may be an ambient internet of things (IoT) wireless device, an encoder device, or an encoding device. The wireless device 205 may be a UE that supports the ambient wireless device 210, or may be another device such as a network entity. In some examples, the wireless device 205 may be an ambient IoT wireless device, an ambient wireless device, or an encoder device. Communications between the ambient wireless device 210 and the wireless device 205 may be via the communication link 215, which may be an uplink, downlink, or another communication link. In some examples, the ambient wireless device 210 may be an encoding device, and the wireless device 205 may be a decoding device. In some examples, the ambient wireless device 210 may be a decoding device, and the wireless device 205 may be an encoding device. For example, the wireless device may encode and transmit the polar encoded codeword 220.
[0078] Devices may communicate polar coded information by implementing a polar coding scheme, which may include enc and polar decoding. For example, the ambient wireless device 210 may communicate a polar encoded codeword 220 via the communication link 215 to the wireless device 205. To create the polar encoded codeword 220, the ambient wireless device 210 may implement a polar encoding operation on one or more information bits of a set of information bits. The information bits may be associated with a message for the wireless device 205. The wireless device 205 may receive the polar encoded codeword 220 and perform a polar decoding operation. As part of the decoding operation, the wireless device 205 may reorder the information bits according to a reliability order.
[0079] Polar coding may be used for channel coding in many applications, such as NR.Polar coding is a technique that may protect data from errors that occur during transmission. In some examples, polar coding may be performed in accordance with various parameters, such as transmission parameters. A bit sequence (e.g., c0, c1, c2, c3, …, cK-1) of one or more bits may be interleaved to create another bit sequence for polar coding (e.g., c′0, c′1, c′2, c′3, …, c′K-1) . In some examples, the bit sequence may be data to be communicated to another device, such as the wireless device 205. Polar coding may be implemented via a polar coding scheme, which may include steps such as polar code encoding (e.g., polar encoding) , polar code decoding (e.g., polar decoding) , and subchannel allocation, as well as elements such as a polar code sequence (e.g., polar sequence) .
[0080] A polar sequence may be one or more polar subchannels (e.g., channels) . Polar sequences may be used to encode the bit sequence, which may be one or more interleaved bits. Each bit of the information bit sequence may be associated with a bit index, and each subchannel of the polar sequence may correspond to a reliability. Subchannel allocation may include assigning each of the bits of the bit information sequence to a subchannel of the polar sequence. The assignment may be based on reliability of each subchannel and the priority of each information bit. For example, the information bits ordered according to bit index may be mapped and reordered according to the subchannel assignment.
[0081] The polar sequence may be represented by where denotes a bit index before polar coding for i=0, 1, ..., Nmax-1 and Nmax=1024, where N represents the information bits. The polar sequence is in ascending order of reliability where denotes the reliability of each subchannel For any code block encoded to N bits, sequence is a subset of the polar sequence (e.g., the subchannels) with all else the same, polar sequence is used. The polar sequence of values less than N, ordered in ascending order of reliability may be denoted as a set of subchannel indices in polar sequence where the length of is K+nPC, K information bits and nPC parity check bits. ( used in subchannel allocation) .
[0082] In subchannel allocation, denotes the most reliable information bit indices in and K input information bits are mapped to the In such a mapping, the sequence may be reordered from the ascending order of reliability to the ascending order of index That is, the transmitting device may reorder the mapped information bits, which are ordered according to subchannel reliability, to be ordered according to information bit indices. The transmitting device (e.g., encoding device) may continue with the polar coding scheme and creating a codeword. Creating the codeword may include encoding (e.g., combining) the information bits with a polar code. The receiver (e.g., decoding device) may receive and decode the codeword, which may result in information bits in order according to the index order. Decoding information bits that are ordered according to information bit order may be simpler for the receiver, as the receiver does not need to reorder after decoding.
[0083] As different systems and applications for wireless technologies develop, ambient wireless devices 210 may become increasingly relevant. Applications may include asset management, logistics, warehousing, and manufacturing, and supporting passive IoT devices, such as RFID-type sensors. Passive IoT things devices may be referred to as ambient wireless devices (e.g., the ambient wireless device 210) , or ambient IoT devices. Network entities and UEs, among other devices, may be required to interact with ambient wireless devices 210. For example, wireless devices 205, such as network entities and UEs, may read and write information stored on ambient wireless devices 210. Wireless devices 205 may provide energy to ambient wireless devices 210. Information-bearing signal may be reflect to wireless device, and the wireless device may read the reflected signal by ambient wireless devices 210 to decode the information transmitted by the ambient wireless devices 210.
[0084] Ambient wireless devices 210 have certain limitations, such as little to no energy storage. Energy harvesting from the environment may be limited. For uplink, or communications from the ambient wireless devices 210 to another wireless device 205, reducing power consumption at the ambient wireless device 210 may be advantageous. The receiving device, such as a UE or network entity, or the wireless device 205, may not experience the same limitations (e.g., storage capabilities) . Implementing various portions of polar coding schemes at the ambient wireless device 210 may increase complexity, resulting in more power consumption. For example, determination of the subchannel allocation, such as mapping subchannels to information bits, needs either a sort with O (Klog2 K) complexity, or a bit map of length N and a complexity of O (N) . Techniques and methods for reducing complexity at the ambient wireless device 210, and thus power consumption, especially when related to polar coding, may be advantageous.
[0085] Techniques described herein provide for a simplified subchannel allocation for polar coding for ambient wireless devices 210. Such techniques may reduce complexity, and thus power consumption, at the ambient wireless device 210. The subchannel allocation may be simplified for uplink, where uplink may be from the ambient wireless device 210 to the wireless device 205. Simplified subchannel allocation may include reordering of the information bits according to bit index at the decoder device. That is, the reordering, which previously may have been performed at the ambient wireless device 210 after mapping the information bits to the subchannels, may be removed from the ambient wireless device 210 and instead be performed at the wireless device 205. Techniques are further described herein with reference to FIGs. 3 and 4.
[0086] Moving the reordering operation of the process of subchannel allocation may involve operation changes including changes to code. For example, moving the reorder step to the wireless device 205 may result in reduced power consumption of the subchannel allocation in the polar code process, resulting in a more conducive process to the energy constraints of ambient wireless devices 210. Additionally, such a method supports a threshold number of changes (e.g., minimal changes) to the polar coding procedure, without changes to other processes.
[0087] FIG. 3 shows an example of a polar coding diagram 300 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The polar coding diagram 300 describes a polar coding scheme for polar coding, including polar encoding 305 (e.g., encoding, polar code encoding) and polar decoding 370 (e.g., decoding, polar code decoding) .
[0088] The polar encoding 305 may be performed by a device such as an ambient wireless device (e.g., ambient IoT device) , or an encoding device. As part of the polar encoding 305, the encoding device may input 315 a bit sequence 310 into a polar code 320 operation. In some examples, the bit sequence 310 may include one or more frozen bits 325. Inputting (e.g., input 315) the bit sequence 310 into the polar code 320 may create, or output, a codeword 330. The encoder device may transmit 335, or otherwise output or communicate, the codeword 330 to a decoder device for polar decoding 370. The polar encoding 305 may or may not include all the elements described herein, and may include additional elements. For example, interleaving may be included as part of the polar encoding 305 or the input 315 may not be included as part of the polar encoding 305.
[0089] The polar decoding 370 may be performed by a device such as a decoder device, a UE configured to support the ambient wireless device, a network entity, or another wireless device. The decoder device may receive the codeword 330, and perform polar decoding 370. The polar decoding 370 may include inputting the codeword 330 into the codeword decoding 340 operation. The codeword decoding 340 may output 345 (e.g., create, produce) a decoded bit sequence 350. The decoder device may reorder 360 the decoded bit sequence 350 to create the reordered bit sequence 365. The polar encoding 305 may or may not include all the elements described herein, and may include additional elements.
[0090] By performing the reorder 360 as part of the polar decoding 370, the complexity and power requirements may be reduced at the encoder device performing the polar encoding 305. By not performing a reordering step (e.g., reorder 360) as part of the polar encoding 305, the encoder device (e.g., ambient wireless device) , may have simplified polar encoding 305. For example, the ambient wireless device may have simplified subchannel allocation.
[0091] The bit sequence 310 may be one or more information bits, such as a Bit 1, Bit 2, Bit 3, …, Bit n. The bit sequence 310 may include one or more frozen bits 325, which may not be allocated and may increase reliability. The frozen bits may also not be reordered. The information bits may be associated with a message for transmission to the encoder device. Each bit of the bit sequence 310 may be associated with a bit index and ordered according to a bit index order. Bit 1 may be the first bit, Bit 2 may be the second bit, etc. Bit n may indicate the nth bit, such that there may be any number of bits.
[0092] The polar encoding may include mapping the information bits to one or more subchannels (e.g., channels) of a polar code sequence. Each subchannel may be associated with a reliability. The information bits may be mapped (e.g., associated with, assigned to) the subchannels. The mapping may include associating an information bit with a subchannel, and ordering the information bits according to subchannel. The subchannels may be ordered according to ascending reliability. By ordering the information bits according to assigned subchannel, the information bits may also be ordered according to reliability of the subchannels. The information bits, after mapping, may no longer be in bit index order. For example, the information bits may no longer be ordered Bit 1, Bit 2, Bit 3, …Bit n. Instead, the bit sequence 310, and thus Bit 3, Bit n, Bit 1, and Bit 2, may be ordered according to reliability of the subchannels. The order, without reference frozen bits, may be Bit 3, Bit n (e.g., any number of bit) , Bit 1, Bit 2. In some examples, the reliability may be an ascending reliability.
[0093] Each bit of the bit sequence 310 may be mapped to a subchannel (e.g., polar channel) of a polar code sequence. Each subchannel may have a corresponding reliability, but the subchannels may not be ordered based on reliability. That is, the first subchannel may not be the most reliable, the second may not be the second most reliable, etc.
[0094] Bits of the bit sequence 310 may be mapped to subchannels, however, based on the reliability of the subchannels. As the bit sequence 310 is mapped according to the reliability of the subchannels, the encoder device may input 315 the bit sequence 310 into the polar code 320, and transmit 335 the resulting codeword 330. The decoder device may receive the codeword 330, perform codeword decoding 340, and output 345 the decoded bit sequence 350. The decoded bit sequence 350 may be ordered according to the reliability of the subchannels, similarly to the bit sequence 310. For example, the information bits of the decoded bit sequence 350 may be ordered: Bit 3, Bit n, Bit 1, Bit 2. The decoder device may then reorder 360 the decoded bit sequence 350 to output the reordered bit sequence 365.
[0095] Reordering may include de-mapping each information bit from each of the respective subchannels of the decoded bit sequence 350. The decoder device may reorder the decoded bit sequence 350 to be ordered according to bit index, as in the reordered bit sequence 365. For example, the information bits may be in the order: Bit 1, Bit 2, Bit 3, …., Bit n. Such reordering at the polar decoder, rather than at the polar encoder, may reduce complexity at the polar encoder. This may reduce the complexity during the polar encoding process, which may be advantageous when the polar encoder is at an ambient wireless device.
[0096] FIG. 4 shows an example of a process flow diagram 400 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The process flow diagram 400 describes communications between an encoder device 405 and a decoder device 410, as well as polar coding related techniques at each device. The encoder device 405 may be an example of the ambient wireless device 210 as described with reference to FIG. 2. The decoder device may be an example of the wireless device 205 as described with reference to FIG. 2.
[0097] In the description of the process flow diagram 400, the operations between the encoder device 405 and the decoder device 410 may be performed in different orders or at different times. Some operations may also be left out of the process flow diagram 400, or other operations may be added. Although the encoder device 405 and the decoder device 410 are shown performing the operations of the process flow diagram 400, some aspects of some operations may also be performed by one or more other wireless devices. The encoder device 405 may be an example of an ambient wireless device, an ambient IoT wireless device, or another device capable of polar coding. The decoder device 410 may be an example of a UE capable of supporting an ambient IoT wireless device, a network entity, a wireless device, or another device capable of polar coding.
[0098] At 415, the encoder device 405 may perform a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device 405, where the set of information bits is ordered according to a bit index order. The bit index order may be such that each bit of the set of information bits is ordered in increasing consecutive order according to respective bit indices.
[0099] Performing the polar encoding operation may include mapping one or more information bits of the set of information bits to respective one or more polar channels (e.g., subchannels) of a polar code sequence according to a reliability order of the polar code sequence. Mapping the one or more information bits may include mapping each information bit of the one or more information bits to a respective polar channel of the respective one or more polar channels based on respective reliabilities of the respective one or more polar channels. The reliability order may be an ordering according to an ascending order of reliability.
[0100] Performing the polar encoding operation may include performing the polar encoding operation in accordance with a polar coding scheme, where the polar coding scheme indicates one or more polar channels, the polar code sequence, the reliability order of the polar code sequence, one or more transmission parameters, a polar code sequence length, one or more encoding operations associated with the one or more polar channels, or a combination thereof.
[0101] Performing the polar encoding operation may include outputting the mapped one or more information bits according to the reliability order of the polar code sequence such that the mapped one or more information bits are ordered according to respective reliabilities of the respective one or more polar channels of the polar code sequence.
[0102] At 420, the encoder device 405 may transmit, in the message, a codeword including the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order. The encoder device 405 may transmit the message to the decoder device 410, which may be a wireless device, a user equipment that supports an ambient internet of things device, or a network entity. The encoder device 405 may be an ambient wireless device or an ambient internet of things wireless device.
[0103] At 425, the decoder device 410 may perform a polar decoding operation of the codeword. Performing the polar decoding operation may include decoding the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits. The decoder device 410 may decode the encoded set of information bits according to the reliability order of the polar code sequence, where the reliability order is an ascending reliability order of the respective one or more polar channels.
[0104] The polar decoding operation may further include inputting the encoded set of information bits ordered according to the reliability order of the polar code sequence such that the encoded set of information bits are ordered according to respective reliabilities of the respective one or more polar channels, in accordance with a polar coding scheme.
[0105] The polar decoding operation may include de-mapping each encoded information bit of the encoded set of information bits from a respective polar channel of the respective one or more polar channels.
[0106] At 430, the decoder device may, such as part of the polar decoding operation, reorder the one or more decoded information bits according to a bit index order. The bit index order may be such that each bit is ordered in increasing consecutive order according to respective bit indices.
[0107] FIG. 5 shows a block diagram 500 of a device 505 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The device 505 may be an example of aspects of an encoder device as described herein. The device 505 may include a receiver 510, a transmitter 515, and a communications manager 520. The device 505, or one or more components of the device 505 (e.g., the receiver 510, the transmitter 515, and the communications manager 520) , may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0108] The receiver 510 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to subchannel allocation for polar coding for ambient wireless devices) . Information may be passed on to other components of the device 505. The receiver 510 may utilize a single antenna or a set of multiple antennas.
[0109] The transmitter 515 may provide a means for transmitting signals generated by other components of the device 505. For example, the transmitter 515 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to subchannel allocation for polar coding for ambient wireless devices) . In some examples, the transmitter 515 may be co-located with a receiver 510 in a transceiver module. The transmitter 515 may utilize a single antenna or a set of multiple antennas.
[0110] The communications manager 520, the receiver 510, the transmitter 515, or various combinations thereof or various components thereof may be examples of means for performing various aspects of subchannel allocation for polar coding for ambient wireless devices as described herein. For example, the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0111] In some examples, the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include at least one of a processor, a digital signal processor (DSP) , a central processing unit (CPU) , a graphics processing unit (GPU) , a neural processing unit (NPU) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0112] Additionally, or alternatively, the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in code (e.g., as communications management software) executed by at least one processor. If implemented in code executed by at least one processor, the functions of the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, a GPU, a NPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0113] In some examples, the communications manager 520 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 510, the transmitter 515, or both. For example, the communications manager 520 may receive information from the receiver 510, send information to the transmitter 515, or be integrated in combination with the receiver 510, the transmitter 515, or both to obtain information, output information, or perform various other operations as described herein.
[0114] The communications manager 520 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 520 is capable of, configured to, or operable to support a means for performing a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device, where the set of information bits is ordered according to a bit index order. In some examples, to perform the polar encoding operation, the communications manager 520 may be configured as or otherwise support a means for mapping one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence according to a reliability order of the polar code sequence. The communications manager 520 is capable of, configured to, or operable to support a means for transmitting, in the message, a codeword including the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order.
[0115] By including or configuring the communications manager 520 in accordance with examples as described herein, the device 505 (e.g., at least one processor controlling or otherwise coupled with the receiver 510, the transmitter 515, the communications manager 520, or a combination thereof) may support techniques for subchannel allocation for polar coding for ambient wireless devices, which may result in various advantages, such as reduced processing, reduced power consumption, more efficient utilization of communication resources, or a combination thereof.
[0116] FIG. 6 shows a block diagram 600 of a device 605 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The device 605 may be an example of aspects of a device 505 or an encoder device 405 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communications manager 620. The device 605, or one of more components of the device 605 (e.g., the receiver 610, the transmitter 615, and the communications manager 620) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0117] The receiver 610 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to subchannel allocation for polar coding for ambient wireless devices) . Information may be passed on to other components of the device 605. The receiver 610 may utilize a single antenna or a set of multiple antennas.
[0118] The transmitter 615 may provide a means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to subchannel allocation for polar coding for ambient wireless devices) . In some examples, the transmitter 615 may be co-located with a receiver 610 in a transceiver module. The transmitter 615 may utilize a single antenna or a set of multiple antennas.
[0119] The device 605, or various components thereof, may be an example of means for performing various aspects of subchannel allocation for polar coding for ambient wireless devices as described herein. For example, the communications manager 620 may include a polar encoding component 625 a codeword transmission component 630, or any combination thereof. The communications manager 620 may be an example of aspects of a communications manager 520 as described herein. In some examples, the communications manager 620, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 610, the transmitter 615, or both. For example, the communications manager 620 may receive information from the receiver 610, send information to the transmitter 615, or be integrated in combination with the receiver 610, the transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.
[0120] The communications manager 620 may support wireless communications in accordance with examples as disclosed herein. The polar encoding component 625 is capable of, configured to, or operable to support a means for performing a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device, where the set of information bits is ordered according to a bit index order. In some examples, to perform the polar encoding operation, the mapping component 635 may be configured as or otherwise support a means for mapping one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence according to a reliability order of the polar code sequence. The codeword transmission component 630 is capable of, configured to, or operable to support a means for transmitting, in the message, a codeword including the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order.
[0121] FIG. 7 shows a block diagram 700 of a communications manager 720 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The communications manager 720 may be an example of aspects of a communications manager 520, a communications manager 620, or both, as described herein. The communications manager 720, or various components thereof, may be an example of means for performing various aspects of subchannel allocation for polar coding for ambient wireless devices as described herein. For example, the communications manager 720 may include a polar encoding component 725, a codeword transmission component 730, a polar encoding output component 735, a mapping component 740, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
[0122] The communications manager 720 may support wireless communications in accordance with examples as disclosed herein. The polar encoding component 725 is capable of, configured to, or operable to support a means for performing a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device, where the set of information bits is ordered according to a bit index order. In some examples, to perform the polar encoding operation, the mapping component 740 is capable of, configured to, or operable to support a means for mapping one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence according to a reliability order of the polar code sequence. The codeword transmission component 730 is capable of, configured to, or operable to support a means for transmitting, in the message, a codeword including the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order.
[0123] In some examples, the polar encoding output component 735 is capable of, configured to, or operable to support a means for outputting the mapped one or more information bits according to the reliability order of the polar code sequence such that the mapped one or more information bits are ordered according to respective reliabilities of the respective one or more polar channels of the polar code sequence.
[0124] In some examples, to support performing the polar encoding operation, the polar encoding component 725 is capable of, configured to, or operable to support a means for performing the polar encoding operation in accordance with a polar coding scheme, where the polar coding scheme indicates one or more polar channels, the polar code sequence, the reliability order of the polar code sequence, one or more transmission parameters, a polar code sequence length, one or more encoding operations associated with the one or more polar channels, or a combination thereof.
[0125] In some examples, the bit index order is such that each bit of the set of information bits is ordered in increasing consecutive order according to respective bit indices.
[0126] In some examples, to support mapping the one or more information bits, the mapping component 740 is capable of, configured to, or operable to support a means for mapping each information bit of the one or more information bits to a respective polar channel of the respective one or more polar channels based on respective reliabilities of the respective one or more polar channels.
[0127] In some examples, the reliability order is an ordering according to an ascending order of reliability. In some examples, the codeword transmission component 730 is capable of, configured to, or operable to support a means for transmitting the message to a wireless device, to a user equipment that supports an ambient internet of things device, or to a network entity. In some examples, the encoder device is an ambient wireless device or an ambient internet of things wireless device.
[0128] FIG. 8 shows a diagram of a system 800 including a device 805 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The device 805 may be an example of or include the components of a device 505, a device 605, or an encoder device as described herein. The device 805 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 820, an I / O controller 810, a transceiver 815, an antenna 825, at least one memory 830, code 835, and at least one processor 840. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 845) .
[0129] The I / O controller 810 may manage input and output signals for the device 805. The I / O controller 810 may also manage peripherals not integrated into the device 805. In some cases, the I / O controller 810 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 810 may utilize an operating system such as or another known operating system. Additionally or alternatively, the I / O controller 810 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 810 may be implemented as part of one or more processors, such as the at least one processor 840. In some cases, a user may interact with the device 805 via the I / O controller 810 or via hardware components controlled by the I / O controller 810.
[0130] In some cases, the device 805 may include a single antenna 825. However, in some other cases, the device 805 may have more than one antenna 825, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 815 may communicate bi-directionally, via the one or more antennas 825, wired, or wireless links as described herein. For example, the transceiver 815 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 815 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 825 for transmission, and to demodulate packets received from the one or more antennas 825. The transceiver 815, or the transceiver 815 and one or more antennas 825, may be an example of a transmitter 515, a transmitter 615, a receiver 510, a receiver 610, or any combination thereof or component thereof, as described herein.
[0131] The at least one memory 830 may include RAM and ROM. The at least one memory 830 may store computer-readable, computer-executable code 835 including instructions that, when executed by the at least one processor 840, cause the device 805 to perform various functions described herein. The code 835 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 835 may not be directly executable by the at least one processor 840 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 830 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0132] The at least one processor 840 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a GPU, a NPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) . In some cases, the at least one processor 840 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the at least one processor 840. The at least one processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., the at least one memory 830) to cause the device 805 to perform various functions (e.g., functions or tasks supporting subchannel allocation for polar coding for ambient wireless devices) . For example, the device 805 or a component of the device 805 may include at least one processor 840 and at least one memory 830 coupled with or to the at least one processor 840, the at least one processor 840 and at least one memory 830 configured to perform various functions described herein. In some examples, the at least one processor 840 may include multiple processors and the at least one memory 830 may include multiple memories.
[0133] One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein. In some examples, the at least one processor 840 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 840) and memory circuitry (which may include the at least one memory 830) ) , or components, that receives or obtains inputs and processes the inputs to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. For example, the at least one processor 840 or a processing system including the at least one processor 840 may be configured to, configurable to, or operable to cause the device 805 to perform one or more of the functions described herein. Further, as described herein, being “configured to, ” being “configurable to, ” and being “operable to” may be used interchangeably and may be associated with a capability, when executing code stored in the at least one memory 830 or otherwise, to perform one or more of the functions described herein.
[0134] The communications manager 820 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 820 is capable of, configured to, or operable to support a means for performing a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device, where the set of information bits is ordered according to a bit index order. In some examples, to perform the polar encoding operation, the communications manager 820 may be configured as or otherwise support a means for mapping one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence according to a reliability order of the polar code sequence. The communications manager 820 is capable of, configured to, or operable to support a means for transmitting, in the message, a codeword including the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order.
[0135] By including or configuring the communications manager 820 in accordance with examples as described herein, the device 805 may support techniques for subchannel allocation for polar coding for ambient wireless devices, which may result in various advantages, such as improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, improved coordination between devices, longer battery life, improved utilization of processing capability, or a combination thereof.
[0136] In some examples, the communications manager 820 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 815, the one or more antennas 825, or any combination thereof. Although the communications manager 820 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 820 may be supported by or performed by the at least one processor 840, the at least one memory 830, the code 835, or any combination thereof. For example, the code 835 may include instructions executable by the at least one processor 840 to cause the device 805 to perform various aspects of subchannel allocation for polar coding for ambient wireless devices as described herein, or the at least one processor 840 and the at least one memory 830 may be otherwise configured to, individually or collectively, perform or support such operations.
[0137] FIG. 9 shows a block diagram 900 of a device 905 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The device 905 may be an example of aspects of a decoder device as described herein. The device 905 may include a receiver 910, a transmitter 915, and a communications manager 920. The device 905, or one or more components of the device 905 (e.g., the receiver 910, the transmitter 915, and the communications manager 920) , may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0138] The receiver 910 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . Information may be passed on to other components of the device 905. In some examples, the receiver 910 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 910 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
[0139] The transmitter 915 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 905. For example, the transmitter 915 may output information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . In some examples, the transmitter 915 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 915 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 915 and the receiver 910 may be co-located in a transceiver, which may include or be coupled with a modem.
[0140] The communications manager 920, the receiver 910, the transmitter 915, or various combinations thereof or various components thereof may be examples of means for performing various aspects of subchannel allocation for polar coding for ambient wireless devices as described herein. For example, the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0141] In some examples, the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include at least one of a processor, a DSP, a CPU, a GPU, a NPU, an ASIC, an FPGA or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0142] Additionally, or alternatively, the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be implemented in code (e.g., as communications management software) executed by at least one processor. If implemented in code executed by at least one processor, the functions of the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, a GPU, a NPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0143] In some examples, the communications manager 920 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 910, the transmitter 915, or both. For example, the communications manager 920 may receive information from the receiver 910, send information to the transmitter 915, or be integrated in combination with the receiver 910, the transmitter 915, or both to obtain information, output information, or perform various other operations as described herein.
[0144] The communications manager 920 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 920 is capable of, configured to, or operable to support a means for receiving, in a message from an ambient wireless device, a codeword including an encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence associated with the polar encoding operation. The communications manager 920 is capable of, configured to, or operable to support a means for performing a polar decoding operation on the codeword. In some examples, to perform the polar decoding operation, the communications manager 920 may be configured as or otherwise support a means for decoding the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits and reordering the one or more decoded information bits according to a bit index order.
[0145] By including or configuring the communications manager 920 in accordance with examples as described herein, the device 905 (e.g., at least one processor controlling or otherwise coupled with the receiver 910, the transmitter 915, the communications manager 920, or a combination thereof) may support techniques for subchannel allocation for polar coding for ambient wireless devices, which may result in various advantages, such as reduced processing, reduced power consumption, more efficient utilization of communication resources, or a combination thereof.
[0146] FIG. 10 shows a block diagram 1000 of a device 1005 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The device 1005 may be an example of aspects of a device 905 or a decoder device 410 as described herein. The device 1005 may include a receiver 1010, a transmitter 1015, and a communications manager 1020. The device 1005, or one of more components of the device 1005 (e.g., the receiver 1010, the transmitter 1015, and the communications manager 1020) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0147] The receiver 1010 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . Information may be passed on to other components of the device 1005. In some examples, the receiver 1010 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 1010 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
[0148] The transmitter 1015 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1005. For example, the transmitter 1015 may output information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . In some examples, the transmitter 1015 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 1015 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1015 and the receiver 1010 may be co-located in a transceiver, which may include or be coupled with a modem.
[0149] The device 1005, or various components thereof, may be an example of means for performing various aspects of subchannel allocation for polar coding for ambient wireless devices as described herein. For example, the communications manager 1020 may include a codeword reception component 1025 a polar decoding component 1030, or any combination thereof. The communications manager 1020 may be an example of aspects of a communications manager 920 as described herein. In some examples, the communications manager 1020, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1010, the transmitter 1015, or both. For example, the communications manager 1020 may receive information from the receiver 1010, send information to the transmitter 1015, or be integrated in combination with the receiver 1010, the transmitter 1015, or both to obtain information, output information, or perform various other operations as described herein.
[0150] The communications manager 1020 may support wireless communications in accordance with examples as disclosed herein. The codeword reception component 1025 is capable of, configured to, or operable to support a means for receiving, in a message from an ambient wireless device, a codeword including an encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence associated with the polar encoding operation. The polar decoding component 1030 is capable of, configured to, or operable to support a means for performing a polar decoding operation on the codeword. In some examples, to perform the polar decoding operation, the polar decoding component 1030 may be configured as or otherwise support a means for decoding the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits and the polar reordering component 1035 may be configured as or otherwise support a means for reordering the one or more decoded information bits according to a bit index order.
[0151] FIG. 11 shows a block diagram 1100 of a communications manager 1120 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The communications manager 1120 may be an example of aspects of a communications manager 920, a communications manager 1020, or both, as described herein. The communications manager 1120, or various components thereof, may be an example of means for performing various aspects of subchannel allocation for polar coding for ambient wireless devices as described herein. For example, the communications manager 1120 may include a codeword reception component 1125, a polar decoding component 1130, a polar input component 1135, a polar de-mapping component 1140, a polar reordering component 1145, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
[0152] The communications manager 1120 may support wireless communications in accordance with examples as disclosed herein. The codeword reception component 1125 is capable of, configured to, or operable to support a means for receiving, in a message from an ambient wireless device, a codeword including an encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence associated with the polar encoding operation. The polar decoding component 1130 is capable of, configured to, or operable to support a means for performing a polar decoding operation on the codeword. In some examples, to perform the polar decoding operation, the polar decoding component 1130 is capable of, configured to, or operable to support a means for decoding the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits and the polar reordering component 1145 is capable of, configured to, or operable to support a means for reordering the one or more decoded information bits according to a bit index order.
[0153] In some examples, to support performing the polar decoding operation, the polar input component 1135 is capable of, configured to, or operable to support a means for inputting the encoded set of information bits ordered according to the reliability order of the polar code sequence such that the encoded set of information bits are ordered according to respective reliabilities of the respective one or more polar channels.
[0154] In some examples, to support performing the polar decoding operation, the polar decoding component 1130 is capable of, configured to, or operable to support a means for performing the polar decoding operation in accordance with a polar coding scheme. In some examples, the bit index order is such that each bit is ordered in increasing consecutive order according to respective bit indices.
[0155] In some examples, to support performing the polar decoding operation, the polar de-mapping component 1140 is capable of, configured to, or operable to support a means for de-mapping each encoded information bit of the encoded set of information bits from a respective polar channel of the respective one or more polar channels.
[0156] In some examples, to support performing the polar decoding operation, the polar decoding component 1130 is capable of, configured to, or operable to support a means for decoding the encoded set of information bits according to the reliability order of the polar code sequence, where the reliability order is an ascending reliability order of the respective one or more polar channels.
[0157] In some examples, the decoder device is a wireless device, a user equipment that supports an ambient internet of things device, or a network entity.
[0158] FIG. 12 shows a diagram of a system 1200 including a device 1205 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The device 1205 may be an example of or include the components of a device 905, a device 1005, or a decoder device as described herein. The device 1205 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 1220, a transceiver 1210, an antenna 1215, at least one memory 1225, code 1230, and at least one processor 1235. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1240) .
[0159] The transceiver 1210 may support bi-directional communications via wired links, wireless links, or both as described herein. In some examples, the transceiver 1210 may include a wired transceiver and may communicate bi-directionally with another wired transceiver. Additionally, or alternatively, in some examples, the transceiver 1210 may include a wireless transceiver and may communicate bi-directionally with another wireless transceiver. In some examples, the device 1205 may include one or more antennas 1215, which may be capable of transmitting or receiving wireless transmissions (e.g., concurrently) . The transceiver 1210 may also include a modem to modulate signals, to provide the modulated signals for transmission (e.g., by one or more antennas 1215, by a wired transmitter) , to receive modulated signals (e.g., from one or more antennas 1215, from a wired receiver) , and to demodulate signals. In some implementations, the transceiver 1210 may include one or more interfaces, such as one or more interfaces coupled with the one or more antennas 1215 that are configured to support various receiving or obtaining operations, or one or more interfaces coupled with the one or more antennas 1215 that are configured to support various transmitting or outputting operations, or a combination thereof. In some implementations, the transceiver 1210 may include or be configured for coupling with one or more processors or one or more memory components that are operable to perform or support operations based on received or obtained information or signals, or to generate information or other signals for transmission or other outputting, or any combination thereof. In some implementations, the transceiver 1210, or the transceiver 1210 and the one or more antennas 1215, or the transceiver 1210 and the one or more antennas 1215 and one or more processors or one or more memory components (e.g., the at least one processor 1235, the at least one memory 1225, or both) , may be included in a chip or chip assembly that is installed in the device 1205. In some examples, the transceiver 1210 may be operable to support communications via one or more communications links (e.g., a communication link 125, a backhaul communication link 120, a midhaul communication link 162, a fronthaul communication link 168) .
[0160] The at least one memory 1225 may include RAM, ROM, or any combination thereof. The at least one memory 1225 may store computer-readable, computer-executable code 1230 including instructions that, when executed by one or more of the at least one processor 1235, cause the device 1205 to perform various functions described herein. The code 1230 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1230 may not be directly executable by a processor of the at least one processor 1235 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 1225 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices. In some examples, the at least one processor 1235 may include multiple processors and the at least one memory 1225 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories which may, individually or collectively, be configured to perform various functions herein (for example, as part of a processing system) .
[0161] The at least one processor 1235 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, an ASIC, a CPU, a GPU, a NPU, an FPGA, a microcontroller, a programmable logic device, discrete gate or transistor logic, a discrete hardware component, or any combination thereof) . In some cases, the at least one processor 1235 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into one or more of the at least one processor 1235. The at least one processor 1235 may be configured to execute computer-readable instructions stored in a memory (e.g., one or more of the at least one memory 1225) to cause the device 1205 to perform various functions (e.g., functions or tasks supporting subchannel allocation for polar coding for ambient wireless devices) . For example, the device 1205 or a component of the device 1205 may include at least one processor 1235 and at least one memory 1225 coupled with one or more of the at least one processor 1235, the at least one processor 1235 and the at least one memory 1225 configured to perform various functions described herein. The at least one processor 1235 may be an example of a cloud-computing platform (e.g., one or more physical nodes and supporting software such as operating systems, virtual machines, or container instances) that may host the functions (e.g., by executing code 1230) to perform the functions of the device 1205. The at least one processor 1235 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in the device 1205 (such as within one or more of the at least one memory 1225) . In some examples, the at least one processor 1235 may include multiple processors and the at least one memory 1225 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein. In some examples, the at least one processor 1235 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 1235) and memory circuitry (which may include the at least one memory 1225) ) , or components, that receives or obtains inputs and processes the inputs to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. For example, the at least one processor 1235 or a processing system including the at least one processor 1235 may be configured to, configurable to, or operable to cause the device 1205 to perform one or more of the functions described herein. Further, as described herein, being “configured to, ” being “configurable to, ” and being “operable to” may be used interchangeably and may be associated with a capability, when executing code stored in the at least one memory 1225 or otherwise, to perform one or more of the functions described herein.
[0162] In some examples, a bus 1240 may support communications of (e.g., within) a protocol layer of a protocol stack. In some examples, a bus 1240 may support communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack) , which may include communications performed within a component of the device 1205, or between different components of the device 1205 that may be co-located or located in different locations (e.g., where the device 1205 may refer to a system in which one or more of the communications manager 1220, the transceiver 1210, the at least one memory 1225, the code 1230, and the at least one processor 1235 may be located in one of the different components or divided between different components) .
[0163] In some examples, the communications manager 1220 may manage aspects of communications with a core network 130 (e.g., via one or more wired or wireless backhaul links) . For example, the communications manager 1220 may manage the transfer of data communications for client devices, such as one or more UEs 115. In some examples, the communications manager 1220 may manage communications with other network entities 105, and may include a controller or scheduler for controlling communications with UEs 115 in cooperation with other network entities 105. In some examples, the communications manager 1220 may support an X2 interface within an LTE / LTE-A wireless communications network technology to provide communication between network entities 105.
[0164] The communications manager 1220 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1220 is capable of, configured to, or operable to support a means for receiving, in a message from an ambient wireless device, a codeword including an encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence associated with the polar encoding operation. The communications manager 1220 is capable of, configured to, or operable to support a means for performing a polar decoding operation on the codeword. In some examples, to perform the polar decoding operation, the communications manager 1220 may be configured as or otherwise support a means for decoding the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits and reordering the one or more decoded information bits according to a bit index order.
[0165] By including or configuring the communications manager 1220 in accordance with examples as described herein, the device 1205 may support techniques for subchannel allocation for polar coding for ambient wireless devices, which may result in various advantages, such as improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, improved coordination between devices, longer battery life, improved utilization of processing capability, or a combination thereof.
[0166] In some examples, the communications manager 1220 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the transceiver 1210, the one or more antennas 1215 (e.g., where applicable) , or any combination thereof. Although the communications manager 1220 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1220 may be supported by or performed by the transceiver 1210, one or more of the at least one processor 1235, one or more of the at least one memory 1225, the code 1230, or any combination thereof (for example, by a processing system including at least a portion of the at least one processor 1235, the at least one memory 1225, the code 1230, or any combination thereof) . For example, the code 1230 may include instructions executable by one or more of the at least one processor 1235 to cause the device 1205 to perform various aspects of subchannel allocation for polar coding for ambient wireless devices as described herein, or the at least one processor 1235 and the at least one memory 1225 may be otherwise configured to, individually or collectively, perform or support such operations.
[0167] FIG. 13 shows a flowchart illustrating a method 1300 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The operations of the method 1300 may be implemented by an encoder device or its components as described herein. For example, the operations of the method 1300 may be performed by an encoder device as described with reference to FIGs. 1 through 8. In some examples, an encoder device may execute a set of instructions to control the functional elements of the encoder device to perform the described functions. Additionally, or alternatively, the encoder device may perform aspects of the described functions using special-purpose hardware.
[0168] At 1305, the method may include performing a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device, where the set of information bits is ordered according to a bit index order. In some examples, performing the polar encoding operation may include mapping one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence according to a reliability order of the polar code sequence. The operations of block 1305 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1305 may be performed by a polar encoding component 725 as described with reference to FIG. 7.
[0169] At 1310, the method may include transmitting, in the message, a codeword including the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order. The operations of block 1310 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed by a codeword transmission component 730 as described with reference to FIG. 7.
[0170] FIG. 14 shows a flowchart illustrating a method 1400 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The operations of the method 1400 may be implemented by an encoder device or its components as described herein. For example, the operations of the method 1400 may be performed by an encoder device as described with reference to FIGs. 1 through 8. In some examples, an encoder device may execute a set of instructions to control the functional elements of the encoder device to perform the described functions. Additionally, or alternatively, the encoder device may perform aspects of the described functions using special-purpose hardware.
[0171] At 1405, the method may include performing a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device, where the set of information bits is ordered according to a bit index order. In some examples, performing the polar encoding operation may include mapping one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence according to a reliability order of the polar code sequence. The operations of block 1405 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1405 may be performed by a polar encoding component 725 as described with reference to FIG. 7.
[0172] At 1410, the method may include outputting the mapped one or more information bits according to the reliability order of the polar code sequence such that the mapped one or more information bits are ordered according to respective reliabilities of the respective one or more polar channels of the polar code sequence. The operations of block 1410 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed by a polar encoding output component 735 as described with reference to FIG. 7.
[0173] At 1415, the method may include transmitting, in the message, a codeword including the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order. The operations of block 1415 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1415 may be performed by a codeword transmission component 730 as described with reference to FIG. 7.
[0174] FIG. 15 shows a flowchart illustrating a method 1500 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The operations of the method 1500 may be implemented by a decoder device or its components as described herein. For example, the operations of the method 1500 may be performed by a decoder device as described with reference to FIGs. 1 through 4 and 9 through 12. In some examples, a decoder device may execute a set of instructions to control the functional elements of the decoder device to perform the described functions. Additionally, or alternatively, the decoder device may perform aspects of the described functions using special-purpose hardware.
[0175] At 1505, the method may include receiving, in a message from an ambient wireless device, a codeword including an encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence associated with the polar encoding operation. The operations of block 1505 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed by a codeword reception component 1125 as described with reference to FIG. 11.
[0176] At 1510, the method may include performing a polar decoding operation on the codeword. In some examples, performing the polar decoding operation may include decoding the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits and reordering the one or more decoded information bits according to a bit index order. The operations of block 1510 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed by a polar decoding component 1130 as described with reference to FIG. 11.
[0177] FIG. 16 shows a flowchart illustrating a method 1600 that supports subchannel allocation for polar coding for ambient wireless devices in accordance with one or more aspects of the present disclosure. The operations of the method 1600 may be implemented by a decoder device or its components as described herein. For example, the operations of the method 1600 may be performed by a decoder device as described with reference to FIGs. 1 through 4 and 9 through 12. In some examples, a decoder device may execute a set of instructions to control the functional elements of the decoder device to perform the described functions. Additionally, or alternatively, the decoder device may perform aspects of the described functions using special-purpose hardware.
[0178] At 1605, the method may include receiving, in a message from an ambient wireless device, a codeword including an encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence associated with the polar encoding operation. The operations of block 1605 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1605 may be performed by a codeword reception component 1125 as described with reference to FIG. 11.
[0179] At 1610, the method may include inputting the encoded set of information bits ordered according to the reliability order of the polar code sequence such that the encoded set of information bits are ordered according to respective reliabilities of the respective one or more polar channels. The operations of block 1610 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1610 may be performed by a polar input component 1135 as described with reference to FIG. 11.
[0180] At 1615, the method may include performing a polar decoding operation on the codeword. In some examples, performing the polar decoding operation may include decoding the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits and reordering the one or more decoded information bits according to a bit index order. The operations of block 1615 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1615 may be performed by a polar decoding component 1130 as described with reference to FIG. 11.
[0181] The following provides an overview of aspects of the present disclosure:
[0182] Aspect 1: A method for wireless communications at an encoder device, comprising: performing a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device, wherein the set of information bits is ordered according to a bit index order, wherein performing the polar encoding operation comprises: mapping one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence according to a reliability order of the polar code sequence; and transmitting, in the message, a codeword comprising the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order.
[0183] Aspect 2: The method of aspect 1, further comprising: outputting the mapped one or more information bits according to the reliability order of the polar code sequence such that the mapped one or more information bits are ordered according to respective reliabilities of the respective one or more polar channels of the polar code sequence.
[0184] Aspect 3: The method of any of aspects 1 through 2, wherein performing the polar encoding operation comprises: performing the polar encoding operation in accordance with a polar coding scheme, wherein the polar coding scheme indicates one or more polar channels, the polar code sequence, the reliability order of the polar code sequence, one or more transmission parameters, a polar code sequence length, one or more encoding operations associated with the one or more polar channels, or a combination thereof.
[0185] Aspect 4: The method of any of aspects 1 through 3, wherein the bit index order is such that each bit of the set of information bits is ordered in increasing consecutive order according to respective bit indices.
[0186] Aspect 5: The method of any of aspects 1 through 4, wherein mapping the one or more information bits comprises: mapping each information bit of the one or more information bits to a respective polar channel of the respective one or more polar channels based at least in part on respective reliabilities of the respective one or more polar channels.
[0187] Aspect 6: The method of any of aspects 1 through 5, wherein the reliability order is an ordering according to an ascending order of reliability.
[0188] Aspect 7: The method of any of aspects 1 through 6, further comprising: transmitting the message to a wireless device, to a user equipment that supports an ambient internet of things device, or to a network entity.
[0189] Aspect 8: The method of any of aspects 1 through 7, wherein the encoder device is an ambient wireless device or an ambient internet of things wireless device.
[0190] Aspect 9: A method for wireless communications at a decoder device, comprising: receiving, in a message from an ambient wireless device, a codeword comprising an encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence associated with the polar encoding operation; performing a polar decoding operation on the codeword, wherein performing the polar decoding operation comprises: decoding the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits; and reordering the one or more decoded information bits according to a bit index order.
[0191] Aspect 10: The method of aspect 9, wherein performing the polar decoding operation comprises: inputting the encoded set of information bits ordered according to the reliability order of the polar code sequence such that the encoded set of information bits are ordered according to respective reliabilities of the respective one or more polar channels.
[0192] Aspect 11: The method of any of aspects 9 through 10, wherein performing the polar decoding operation comprises: performing the polar decoding operation in accordance with a polar coding scheme.
[0193] Aspect 12: The method of any of aspects 9 through 11, wherein the bit index order is such that each bit is ordered in increasing consecutive order according to respective bit indices.
[0194] Aspect 13: The method of any of aspects 9 through 12, wherein performing the polar decoding operation comprises: de-mapping each encoded information bit of the encoded set of information bits from a respective polar channel of the respective one or more polar channels.
[0195] Aspect 14: The method of any of aspects 9 through 13, wherein performing the polar decoding operation comprises: decoding the encoded set of information bits according to the reliability order of the polar code sequence, wherein the reliability order is an ascending reliability order of the respective one or more polar channels.
[0196] Aspect 15: The method of any of aspects 9 through 14, wherein the decoder device is a wireless device, a user equipment that supports an ambient internet of things device, or a network entity.
[0197] Aspect 16: An encoder device for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the encoder device to perform a method of any of aspects 1 through 8.
[0198] Aspect 17: An encoder device for wireless communications, comprising at least one means for performing a method of any of aspects 1 through 8.
[0199] Aspect 18: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 1 through 8.
[0200] Aspect 19: A decoder device for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the decoder device to perform a method of any of aspects 9 through 15.
[0201] Aspect 20: A decoder device for wireless communications, comprising at least one means for performing a method of any of aspects 9 through 15.
[0202] Aspect 21: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 9 through 15.
[0203] It should be noted that the methods described herein describe possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0204] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
[0205] Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0206] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, a GPU, a NPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but, in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) . Any functions or operations described herein as being capable of being performed by a processor may be performed by multiple processors that, individually or collectively, are capable of performing the described functions or operations.
[0207] The functions described herein may be implemented using hardware, software executed by a processor, or any combination thereof. Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, or functions, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0208] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media. Any functions or operations described herein as being capable of being performed by a memory may be performed by multiple memories that, individually or collectively, are capable of performing the described functions or operations.
[0209] As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. ”
[0210] As used herein, including in the claims, the article “a” before a noun is open-ended and understood to refer to “at least one” of those nouns or “one or more” of those nouns. Thus, the terms “a, ” “at least one, ” “one or more, ” “at least one of one or more” may be interchangeable. For example, if a claim recites “a component” that performs one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “a component” having characteristics or performing functions may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent reference to a component introduced with the article “a” using the terms “the” or “said” may refer to any or all of the one or more components. For example, a component introduced with the article “a” may be understood to mean “one or more components, ” and referring to “the component” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ” Similarly, subsequent reference to a component introduced as “one or more components” using the terms “the” or “said” may refer to any or all of the one or more components. For example, referring to “the one or more components” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ”
[0211] The term “determine” or “determining” encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database or another data structure) , ascertaining and the like. Also, “determining” can include receiving (e.g., receiving information) , accessing (e.g., accessing data stored in memory) and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.
[0212] In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label, or other subsequent reference label.
[0213] The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration, ” and not “preferred” or “advantageous over other examples. ” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.
[0214] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.An encoder device, comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the encoder device to:perform a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device, wherein the set of information bits is ordered according to a bit index order, wherein, to perform the polar encoding operation, the one or more processors are individually or collectively operable to execute the code to cause the encoder device to:map one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence according to a reliability order of the polar code sequence; andtransmit, in the message, a codeword comprising the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order.2.The encoder device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the encoder device to:output the mapped one or more information bits according to the reliability order of the polar code sequence such that the mapped one or more information bits are ordered according to respective reliabilities of the respective one or more polar channels of the polar code sequence.3.The encoder device of claim 1, wherein, to perform the polar encoding operation, the one or more processors are individually or collectively operable to execute the code to cause the encoder device to:perform the polar encoding operation in accordance with a polar coding scheme, wherein the polar coding scheme indicates one or more polar channels, the polar code sequence, the reliability order of the polar code sequence, one or more transmission parameters, a polar code sequence length, one or more encoding operations associated with the one or more polar channels, or a combination thereof.4.The encoder device of claim 1, wherein the bit index order is such that each bit of the set of information bits is ordered in increasing consecutive order according to respective bit indices.5.The encoder device of claim 1, wherein, to map the one or more information bits, the one or more processors are individually or collectively operable to execute the code to cause the encoder device to:map each information bit of the one or more information bits to a respective polar channel of the respective one or more polar channels based at least in part on respective reliabilities of the respective one or more polar channels.6.The encoder device of claim 1, wherein the reliability order is an ordering according to an ascending order of reliability.7.The encoder device of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the encoder device to:transmit the message to a wireless device, to a user equipment that supports an ambient internet of things device, or to a network entity.8.The encoder device of claim 1, wherein the encoder device is an ambient wireless device or an ambient internet of things wireless device.9.A decoder device, comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the decoder device to:receive, in a message from an ambient wireless device, a codeword comprising an encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence associated with the polar encoding operation;perform a polar decoding operation on the codeword, wherein, to perform the polar decoding operation, the one or more processors are individually or collectively operable to execute the code to cause the decoder device to:decode the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits; andreorder the one or more decoded information bits according to a bit index order.10.The decoder device of claim 9, wherein, to perform the polar decoding operation, the one or more processors are individually or collectively operable to execute the code to cause the decoder device to:input the encoded set of information bits ordered according to the reliability order of the polar code sequence such that the encoded set of information bits are ordered according to respective reliabilities of the respective one or more polar channels.11.The decoder device of claim 9, wherein, to perform the polar decoding operation, the one or more processors are individually or collectively operable to execute the code to cause the decoder device to:perform the polar decoding operation in accordance with a polar coding scheme.12.The decoder device of claim 9, wherein the bit index order is such that each bit is ordered in increasing consecutive order according to respective bit indices.13.The decoder device of claim 9, wherein, to perform the polar decoding operation, the one or more processors are individually or collectively operable to execute the code to cause the decoder device to:de-mapping each encode information bit of the encoded set of information bits from a respective polar channel of the respective one or more polar channels.14.The decoder device of claim 9, wherein, to perform the polar decoding operation, the one or more processors are individually or collectively operable to execute the code to cause the decoder device to:decode the encoded set of information bits according to the reliability order of the polar code sequence, wherein the reliability order is an ascending reliability order of the respective one or more polar channels.15.The decoder device of claim 9, wherein the decoder device is a wireless device, a user equipment that supports an ambient internet of things device, or a network entity.16.A method for wireless communications at an encoder device, comprising:performing a polar encoding operation on a set of information bits associated with a message for transmission by the encoder device, wherein the set of information bits is ordered according to a bit index order, wherein performing the polar encoding operation comprises:mapping one or more information bits of the set of information bits to respective one or more polar channels of a polar code sequence according to a reliability order of the polar code sequence; andtransmitting, in the message, a codeword comprising the mapped one or more information bits of the set of information bits encoded according to the polar encoding operation and ordered according to the reliability order.17.The method of claim 16, further comprising:outputting the mapped one or more information bits according to the reliability order of the polar code sequence such that the mapped one or more information bits are ordered according to respective reliabilities of the respective one or more polar channels of the polar code sequence.18.The method of claim 16, wherein performing the polar encoding operation comprises:performing the polar encoding operation in accordance with a polar coding scheme, wherein the polar coding scheme indicates one or more polar channels, the polar code sequence, the reliability order of the polar code sequence, one or more transmission parameters, a polar code sequence length, one or more encoding operations associated with the one or more polar channels, or a combination thereof.19.The method of claim 16, wherein the bit index order is such that each bit of the set of information bits is ordered in increasing consecutive order according to respective bit indices.20.The method of claim 16, wherein mapping the one or more information bits comprises:mapping each information bit of the one or more information bits to a respective polar channel of the respective one or more polar channels based at least in part on respective reliabilities of the respective one or more polar channels.21.The method of claim 16, wherein the reliability order is an ordering according to an ascending order of reliability.22.The method of claim 16, further comprising:transmitting the message to a wireless device, to a user equipment that supports an ambient internet of things device, or to a network entity.23.The method of claim 16, wherein the encoder device is an ambient wireless device or an ambient internet of things wireless device.24.A method for wireless communications at a decoder device, comprising:receiving, in a message from an ambient wireless device, a codeword comprising an encoded set of information bits encoded according to a polar encoding operation and ordered according to a reliability order of a polar code sequence associated with the polar encoding operation;performing a polar decoding operation on the codeword, wherein performing the polar decoding operation comprises:decoding the encoded set of information bits using respective one or more polar channels of the polar code sequence according to the reliability order of the polar code sequence to obtain one or more decoded information bits; andreordering the one or more decoded information bits according to a bit index order.25.The method of claim 24, wherein performing the polar decoding operation comprises:inputting the encoded set of information bits ordered according to the reliability order of the polar code sequence such that the encoded set of information bits are ordered according to respective reliabilities of the respective one or more polar channels.26.The method of claim 24, wherein performing the polar decoding operation comprises:performing the polar decoding operation in accordance with a polar coding scheme.27.The method of claim 24, wherein the bit index order is such that each bit is ordered in increasing consecutive order according to respective bit indices.28.The method of claim 24, wherein performing the polar decoding operation comprises:de-mapping each encoded information bit of the encoded set of information bits from a respective polar channel of the respective one or more polar channels.29.The method of claim 24, wherein performing the polar decoding operation comprises:decoding the encoded set of information bits according to the reliability order of the polar code sequence, wherein the reliability order is an ascending reliability order of the respective one or more polar channels.30.The method of claim 24, wherein the decoder device is a wireless device, a user equipment that supports an ambient internet of things device, or a network entity.
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