Showing papers by "Stefan Parkvall published in 2019"

5G New Radio: Unveiling the Essentials of the Next Generation Wireless Access Technology

Abstract: The fifth generation (5G) wireless access technology, known as New Radio (NR), will address a variety of usage scenarios from enhanced mobile broadband to ultra-reliable low-latency communications to massive machine type communications. Key technology features include ultra-lean transmission, support for low latency, advanced antenna technologies, and spectrum flexibility including operation in high frequency bands and inter-working between high and low frequency bands. This article provides an overview of the essentials of the state of the art in 5G wireless technology represented by the 3GPP NR technical specifications, with a focus on the physical layer. We describe the fundamental concepts of 5G NR, explain in detail the design of physical channels and reference signals, and share the various design rationales influencing standardization.

5G Evolution and Beyond

Abstract: This paper provides an overview of the evolution of the 5G NR radio-access technology, starting with 3GPP release 16 but also including potential further evolution steps. It also provides a discussion about the use of AI and machine learning as important components of the future evolution of wireless communication

Enabling Multiple Numerologies in a Network

Abstract: There is presented a method for enabling multiple numerologies in a network. The method is performed by a user equipment (UE), and comprises receiving (S110) system information in a first search space on a broadcast channel with a first numerology, determining (S120) a second search space from the received system information, and receiving (S130) further information in the second search space with a second numerology. A UE, a base station a computer program and a computer program device are also presented.

Artificial Intelligence in Future Evolution of Mobile Communication

Abstract: With the completion of the first release (Rel-15) of the 3GPP fifth-generation (5G) NR specifications [1, 2], the research community should now direct its focus towards the next step in the evolution of wireless mobile communication. Similar to earlier generations, it can be expected that the next ten years will see a gradual evolution of NR, introducing new innovative technology components and further enhancing the capabilities and expanding the scope of 5G wireless access. In a longer-time perspective, we may see the emergence of completely new “beyond 5G” radio-access technology.

Support for frequency-overlapping carriers

Abstract: A method and network node for providing support for frequency-overlapping carriers among a first radio access technology, RAT, and a second RAT is provided. Second RAT information to signal to the first RAT wireless device is determined. The second RAT information configured to allow the first RAT wireless device to determine, at a resource element level, resources reserved for second RAT transmissions. The second RAT information is caused to be communicated to the first RAT wireless device.

Data Transmissions in Control Regions

Abstract: According to some embodiments, a method in a wireless device comprises: receiving a control channel (e.g., physical downlink control channel (PDCCH)) that includes control information that indicates a set of time and frequency resources allocated for the wireless device to receive a data transmission; determining that the set of time and frequency resources allocated for data transmission overlaps with a control resource region (e.g., control resource set (CORESET)); and receiving the data transmission in the set of time and frequency resources allocated for data transmission. The control information may include a bitmap that indicates at one or more groups of time and frequency resources excluded/included for the data transmission region.

Random access method for multiple numerology operation

Abstract: The present disclosure introduces methods and apparatus for configuring or preconfiguring random access procedures when there are multiple configurable numerologies for one carrier. In some embodiments, the random access numerology of the wireless device is configured using the system information block. In other embodiments, the random access numerology used by the wireless device is determined implicitly based on the detection of one or more synchronization signals.

Signalling of frequency-domain resource assignment

Abstract: Embodiments include a method for assigning, to a user equipment (UE) in a wireless communication network, frequency-domain resources of a communication channel shared with one or more further UEs. Such embodiments include sending, to the UE, an indication of an active carrier bandwidth part (BWP) usable for communicating via the shared channel. Such embodiments include selecting one or more frequency-domain resource blocks (RBs), within the active BWP, to be assigned to the UE. Such embodiments include encoding an indication of the one or more selected RBs using a plurality of available bits, wherein the plurality of available bits is insufficient to encode all assignable combinations of RBs within the active BWP. Such embodiments include sending the encoded indication to the UE via a downlink control channel. Embodiments also include complementary methods performed by a UE, as well as network nodes and UEs configured and/or arranged to perform various methods.

Method, terminal device and network device for time advance adjustment

Abstract: Methods, network device and terminal device are disclosed time advance adjustment. A method comprises receiving a time advance, TA, command from a network device; determining a TA granularity or range; and determining a TA value based at least partly on the TA command and the TA granularity or range, wherein different numerologies are configured for at least two carriers and/or at least two bandwidth parts (BWPs) in one carrier, wherein the at least two carriers and/or the at least two BWPs serve the terminal device and/or the terminal device supports at least one numerology.

Efficient control signaling using common search space

Abstract: There is disclosed a method of operating a network node in a radio access network, the method includes transmitting a resource allocation message comprising a bit field, the resource allocation message being transmitted for reception in a common search space to which a first bandwidth part with a first unit size of resource allocation is associated. The bit field allocates resources in a second bandwidth part with a second unit size of resource allocation. The disclosure also pertains to related devices and methods.

Scheduled UCI Transmission Scheme

Abstract: A radio network device is operative to transmit uplink data on a physical uplink shared channel aggregating two or more contiguous slots. The device is further operative to transmit, in addition to the uplink data, Uplink Control Information (UCI) in at least one of the aggregated slots. The UCI may comprise a HARQ ACK/NACK. The UCI is configured in response to Downlink Control Information (DCI) received from a serving network node. The DCI also includes a UL scheduling grant for the physical uplink channel. The UCI may be configured in the physical uplink channel transmission in a variety of ways. Various amounts of frequency resource (e.g., subcarriers) may be allocated to UCI. The subcarriers may be non-contiguous. In slot aggregation, the UCI subcarriers may frequency hop from slot to slot. The UCI may be encoded differently in different slots, to facilitate early decoding by a receiver (which may, for example immediately prepare a re-transmission in the case of a NACK).

Prefixing of OFDM symbols to support variable subframe length

Abstract: The present disclosure relates to a first radio node configured for orthogonal frequency division multiplexing (OFDM), comprising a receiver, a transmitter, a processor and a memory storing instructions executable by the processor for causing the transmitter in a first mode of operation with a first subcarrier spacing f1: to transmit a sequence of prefixed OFDM symbols, and in a second mode of operation with a second subcarrier spacing f2: to transmit a sequence of prefixed OFDM symbols, wherein the sequence of transmitted OFDM symbols is aligned with a predefined repeating radio frame, which is common to both the first and second modes of operation, or with an integer multiple of the predefined repeating radio frame; and the first and second subcarrier spacings are related by an integer factor, f1/f2=p or f1/f2=1/p, with p≠1 integer.

가변 처리 시간들을 갖는 노드들에 대한 harq 핸들링

Abstract: 전송기에서 이용하기 위한 방법은 하나 이상의 코드 블록 그룹(CBG)으로 배열된 복수의 코드 블록(CB)을 포함하는 전송 블록(TB)을 포함하는 전송을 보내는 단계를 포함한다. 각각의 코드 블록 그룹은 하나 이상의 코드 블록을 포함하고, 각각의 코드 블록은 복수의 코딩된 비트를 포함한다. 전송은 전송 블록마다 다중 비트 HARQ 피드백을 이용하도록 구성된 수신기에게 보내진다. 이 방법은 전송 블록의 하나 이상의 코드 블록 그룹 중 하나 이상에 대한 HARQ ACK 또는 NACK 피드백을 수신기로부터 수신하는 단계를 더 포함한다. 이 방법은 적어도 수신된 HARQ ACK 또는 NACK 피드백에 기반하여 재전송에서 수신기에게 보낼 코드 블록들 또는 코드 블록 그룹들의 수를 결정하는 단계를 더 포함한다.

무선 통신 네트워크를 위한 네트워크 아키텍처, 방법, 및 디바이스

Abstract: 휴면 모드에서 동작하는 유저 장비와 같은 무선 디바이스에 의해 수행되는 방법은, 사전 결정된 세트의 자원으로부터 각각의 복수의 자원에 대한 측정을 수행하거나 또는 세트의 빔과 같은 사전 결정된 세트의 자원으로부터 각각의 복수의 자원으로부터 정보를 복조 및 디코딩한다 방법은, 사전 결정된 기준에 대항해서 각각의 복수의 자원에 대한 측정 또는 복조된 및 디코딩된 정보를 평가하고, 사전 결정된 기준이 충족되는 결정에 응답해서, 측정의 수행 및 평가를 중단, 또는 정보의 복조 및 디코딩 및 평가를 중단하여, 사전 결정된 세트의 자원 내의 하나 이상의 자원이 측정 또는 복조 및 디코딩되지 않도록 하는 것을 더 포함한다 방법은, 사전 결정된 기준이 충족되는 결정에 더 응답해서, 수신기 회로를 비활성화하는 것을 더 포함한다 방법은, 제1의 다운링크 서브프레임에서, 제1의 수비학에 따라 포맷된 제1의 직교 주파수-분할 멀티플렉싱(OFDM) 전송을 수신하고, 제2의 다운링크 서브프레임에서, 제2의 수비학에 따라서 포맷된 제2의 OFDM 전송을 수신하며, 제2의 수비학은 제1의 수비학과 다르도록 하는 것을 더 포함한다

수신기 특정 전송 길이

Abstract: 하나 이상의 신규한 심볼 구조, 제어 시그널링 및 무선 신호 전송/수신을 위한 스케줄링을 선택하고 사용하는 기술이 제안된다. 일례의 방법은, 슬롯에 대응하는 제어 정보에 기반해서, 네트워크 노드(106)와 통신하는 UE(102A) 또는 다른 UE(102B)가 슬롯에서 UE(102A) 또는 다른 UE(102B)에 의해서 수신된 다운링크 신호에 대해서 슬롯에서 ACK 또는 NACK 피드백을 전송하는 것을 결정(302)하는 것을 제안한다. 추가적으로, 예시적인 방법은, 다운링크 신호가 완전히 수신된 후 및 ACK 또는 NACK 피드백의 전송이 시작하기 전에, 네트워크 노드(106)에 중간 업링크 신호를 전송(304)하거나 또는 네트워크 노드(106)로부터 중간 다운링크 신호를 수신하는 것을 포함한다. UE 및 네트워크 노드와 같은 일례의 장치 및 컴퓨터 프로그램/코드가 제안된다.

무선 통신 네트워크에서 무선 리소스를 식별 및 사용하기 위한 방법 및 장치

Abstract: 기지국과 같은 네트워크 노드는 제1리소스 참조 스킴을 사용하여 전체 대역폭 내의 무선 리소스들을 식별하고, 반면 무선 통신 장치는 제2리소스 참조 스킴을 사용하여 상기 전체 대역폭의 할당된 부분 내의 무선 리소스들을 식별한다. 장점적으로, 상기 장치는 2개의 스킴을 관련시키는 맵핑 정보에 따라 제2리소스 참조 스킴으로 리소스 식별자를 트랜슬레이팅함으로써, 제1리소스 참조 스킴에 따라 표현된 리소스 식별자에 의해 지시된 주어진 무선 리소스들을 정확하게 식별한다. 대응적으로, 상기 네트워크 노드는 상기 무선 통신 장치가 암시적으로 또는 명시적으로 상기 맵핑 정보를 제공함으로써 그와 같은 트랜슬레이션을 수행할 수 있게 한다.

Bandwidth part switching

Abstract: A network node, wireless device and methods for switching between an active and target bandwidth parts. A method in a network node includes selecting one or more resource blocks in the target bandwidth part for a transmission or reception between the wireless device and the network node. The selected resource blocks to be used in the target bandwidth part are indicated in a resource allocation field of a downlink control channel information in the active bandwidth part, the allocation field having information bits. The resource allocation field in the active bandwidth part and the information bits therein are configured based on a target bandwidth part resource allocation type. The target bandwidth part resource allocation type indicates whether the information bits include a bitmap corresponding to one or more resource block groups, or an integer value corresponding to a starting resource block and a length of the allocation in resource blocks.

Alarming of ascending communication line and / or downlinking communication link relating to different radio access technology

Abstract: FIELD: wireless communication equipmentSUBSTANCE: invention relates to wireless communication In the downlink DL, the network unit (20) of the first RAT access technology is adapted to transmit the DL carrier in the frequency channel of the first RAT, which is higher than the frequency channel of the second RAT In the uplink, the UL wireless communication device (10-1) is configured to transmit the UL carrier of the first RAT in the uplink frequency channel overlapping with the uplink frequency channel of the second RAT Respectively, the network unit (20) is configured to receive and demodulate and / or decode the uplink carrier UL of the first RAT in the uplink frequency channel overlapping with the uplink frequency channel of the second RATEFFECT: technical result of the invention consists in the possibility of interaction between various radio access technologies, providing users with improved functional characteristics, in which wireless communication devices do not require a high-frequency transmitter and provide a reliable way to control feedback signaling at lower frequencies36 cl, 25 dwg

Acknowledgment handshaking feedback mechanism

Abstract: FIELD: electrical communication engineering.SUBSTANCE: invention relates to communication. Method implemented in a first communication node (110) for communicating with a second communication node (120) through a handshake connection, comprises steps of: receiving a stream of code blocks from a second communication node, wherein each code unit is associated with a check value which provides error detection and belongs to a predetermined group of code blocks; detecting errors in received code blocks using corresponding associated check values; and transmitting to second communication node a receipt with respect to each of said predetermined groups of code units, wherein the negative value of the receipt indicates that the error was detected with respect to at least one of the code blocks in the predetermined group, wherein the receipt for the predetermined group of two or more code blocks is based on combining the error detection results for a subset of code blocks in the predetermined group.EFFECT: faster ACK/NACK feedback transmission.21 cl, 9 dwg

Wireless communication block interleaving

Abstract: Apparatuses and methods are disclosed for block interleaving. In one embodiment, a method includes generating an interleaver sequence for a control resource set, CORESET, configuration for a physical downlink control channel, the interleaver sequence associated with an interleaving matrix; optionally, for each one of an allowed value of number of rows for the interleaving matrix, determining a number of null entries to be added to the interleaving matrix; and selecting a number of rows. R, for the interleaving matrix such that the number of null entries to be added to the interleaving matrix is: no more than a number of columns, C, of the interleaving matrix; and optionally, the smallest among the numbers of null entries determined for each of the allowed values of number of rows for the interleaving matrix. In another embodiment, a method includes decomposing the interleaver sequence.

Receiver-specific transmission length

Abstract: Techniques for selecting and utilizing one or more novel symbol structures, control signaling, and scheduling for wireless signal transmission/reception are presented. An example method is presented that includes determining (302), based on control information corresponding to a slot, that a user equipment (UE) (102A) or another UE (102B) in communication with a network node (106) is to transmit acknowledgement (ACK) or negative acknowledgement (NACK) feedback in the slot for a downlink signal received by the UE (102A) or the other UE (102B) in the slot. In addition, the example method includes transmitting (304) an intermediate uplink signal to the network node (106) and/or receiving an intermediate downlink signal from the network node (106) after the downlink signal is fully received and before transmission of the ACK or NACK feedback begins. Example apparatuses, such as UEs and network nodes, and computer programs/code are also presented.

네트워크에서 다수의 뉴머롤로지의 인에이블링

Abstract: 네트워크에서 다수의 뉴머롤로지들을 인에이블 하는 방법을 제시한다. 이 방법은, 유저 장비(UE)에 의해 수행되되, 제1 뉴머롤로지를 갖는 방송 채널상에서 제1 탐색 공간에서의 시스템 정보를 수신하는 단계(S110)와, 상기 수신된 시스템 정보로부터 제2 탐색 공간을 결정하는 단계(S120)와, 제2 뉴머롤로지를 갖는 상기 제2 탐색 공간에서의 또 다른 정보를 수신하는 단계(S130)를 포함한다. UE, 기지국, 컴퓨터 프로그램 및 컴퓨터 프로그램 제품도 제시된다.

제어 영역에서의 데이터 송신

Abstract: 일부 실시예에 따르면, 무선 디바이스에서의 방법은 무선 디바이스가 데이터 송신을 수신하도록 할당된 시간 및 주파수 자원 세트를 나타내는 제어 정보를 포함하는 제어 채널(예를 들어, 물리적 다운링크 제어 채널(PDCCH))을 수신하는 단계를 포함한다. 데이터 송신을 위해 할당된 시간 및 주파수 자원 세트가 제어 자원 영역(예를 들어, 제어 자원 세트(CORESET))과 중첩하는 것으로 결정하는 단계; 및 데이터 송신을 위해 할당된 시간 및 주파수 자원 세트에서 데이터 송신을 수신하는 단계를 포함한다. 제어 정보는 데이터 송신 영역에 대해 배제/포함된 하나 이상의 시간 및 주파수 자원 그룹에서 나타내는 비트맵을 포함할 수 있다.

다중 뉴머롤로지 연산을 위한 랜덤 액세스 방법

Abstract: 본 발명은 하나의 캐리어에 대해 다수의 구성 가능한 뉴머롤로지가 존재할 때 랜덤 액세스 절차들을 구성하거나 사전 구성하기 위한 방법들 및 장치들을 제안한다. 일부 실시예들에서, 무선 장치의 랜덤 액세스 뉴머롤로지는 시스템 정보 블록을 사용하여 구성된다. 다른 실시예들에서, 무선 장치에 의해 사용되는 랜덤 액세스 뉴머롤로지는 하나 이상의 동기 신호의 검출에 기초하여 암시적으로 결정된다.

Radio communication unit, wireless device and methods thereof

Abstract: FIELD: physics.SUBSTANCE: invention relates to wireless communication. Wireless device is configured by cells on at least two component carriers, CC, available to the wireless communication system for communication with the wireless device. Each of the at least two CCs is associated with at least one CC group from a set of CC groups. Radio communication unit transmits control information indicating the CC group to the wireless device. Transmitted control information is applied to at least one CC, wherein said at least one CC is at least one of those CC from at least two CCs which are associated with said CC group. Wireless device receives control information from the radio communication unit and applies the received control information to at least one CC, wherein said at least one CC is at least one of those CC of at least two CCs, which are associated with said CC group.EFFECT: technical result is higher flexibility in communication between radio communication nodes and wireless devices.22 cl, 14 dwg