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BR-112019008501-B1 - Method performed by a user device, method performed by a network node, user device, network node, and computer-readable storage media.

BR112019008501B1BR 112019008501 B1BR112019008501 B1BR 112019008501B1BR-112019008501-B1

Abstract

Techniques are presented for selecting and using one or more new symbol structures, control signaling, and programming for wireless signal transmission/reception. An exemplary method is presented that includes determining (302), based on control information corresponding to an interval, that a user equipment (UE) (102A) or another UE (102B) communicating with a network node (106) is about to transmit acknowledgment (ACK) or negative acknowledgment (NACK) feedback within the interval for a downlink signal received by UE (102A) or another UE (102B) within the interval. Furthermore, the exemplary 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 the transmission of the ACK or NACK feedback begins. Exemplary devices such as UEs and network nodes, and computer programs/code are also presented.

Inventors

  • Robert Baldemair
  • Stefan Parkvall

Assignees

  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Dates

Publication Date
20260317
Application Date
20171027
Priority Date
20161028

Claims (16)

  1. 1. Method performed by a user equipment (UE) (102A), for wireless communication with a network node (106) during an interval, comprising: determining (302), based on control information corresponding to the interval, that the UE (102A) must generate and transmit an acknowledgment (ACK) or negative acknowledgment (NACK) feedback during the interval for a downlink signal received by the UE (102A) during the interval, characterized in that the method further comprises: receiving an intermediate downlink signal from the network node (106) after the downlink signal is completely received and before the transmission of the ACK or NACK feedback begins, wherein receiving the intermediate downlink signal comprises receiving a portion of a continuous downlink signal, wherein the reception of the continuous downlink signal begins before the downlink signal is fully received.
  2. 2. Method according to claim 1, characterized in that the control information comprises an indication of whether the UE (102A) should transmit ACK or NACK feedback in the interval and/or whether there is an opportunity for uplink transmission in the interval.
  3. 3. A method according to claim 1 or 2, characterized in that the control information comprises information indicating a time or symbol at which the reception of the intermediate downlink signal is about to end.
  4. 4. Method according to any one of claims 1 to 3, characterized in that different downlink signals received by UE (102A) in the interval differ in length.
  5. 5. Method according to any one of claims 1 to 4, characterized in that a period of time after the downlink signal is completely received and before the transmission of the ACK or NACK feedback begins comprises a processing time for generating the ACK or NACK feedback in the UE (102A).
  6. 6. Method according to any one of claims 1 to 5, characterized in that the control information is received from the network node (106) by means of dedicated control signaling or by means of additional information using existing control signaling.
  7. 7. User Equipment (UE) (102A), in communication with a network node (106) during an interval, the UE (102A) configured to: determine, based on control information corresponding to the interval, that the UE (102A) should generate and transmit acknowledgment (ACK) or negative acknowledgment (NACK) feedback during the interval for a downlink signal received by the UE (102A); characterized in that the UE (102A) is additionally configured to: receive an intermediate downlink signal from the network node (106) after the downlink signal is completely received and before the transmission of the ACK or NACK feedback begins, wherein the UE (102A) receiving the intermediate downlink signal comprises the UE (102A) receiving a portion of a continuous downlink signal, wherein the reception of the continuous downlink signal begins before the downlink signal is Fully received.
  8. 8. Computer-readable storage medium, characterized in that it comprises instructions which, when executed by at least one processor of a UE (102A), cause the UE (102A) to execute the method as defined in claim 1.
  9. 9. Method implemented by a network node (106) for wireless communication with a user equipment (UE) (102A), during an interval, comprising: generating (402) control information corresponding to the interval, the control information indicating that the UE (102A) should generate and transmit acknowledgment (ACK) or negative acknowledgment (NACK) feedback during the interval for a downlink signal received by the UE (102A); transmitting (404) the control information to the UE (102A); characterized in that the method further comprises: transmitting (406), during the interval, an intermediate downlink signal to the UE (102A) after the downlink signal is completely received and before the transmission of the ACK or NACK feedback begins, wherein said transmission (406) of the intermediate downlink signal comprises transmitting a portion of a continuous downlink signal, wherein the reception of the continuous downlink signal by UE (102A) starts before the downlink signal is fully received.
  10. 10. Method according to claim 9, characterized in that the control information comprises an indication of whether the UE (102A) should transmit ACK or NACK feedback in the interval and/or whether there is an opportunity for uplink transmission in the interval.
  11. 11. Method according to claim 9 or 10, characterized in that the control information comprises information indicating a time or symbol at which the transmission of the intermediate uplink signal is about to begin and/or a time or symbol at which the reception of the intermediate downlink signal is about to end.
  12. 12. Method according to any one of claims 9 to 11, characterized in that different downlink signals received by UE (102A) in the interval differ in length.
  13. 13. Method according to any one of claims 9 to 12, characterized in that a period of time after the downlink signal is completely received by UE (102A) and before the transmission of ACK or NACK feedback begins comprises a processing time for generating ACK or NACK feedback in UE (102A).
  14. 14. Method according to any one of claims 9 to 13, characterized in that the control information is transmitted by the network node (106) by means of dedicated control signaling or by means of additional information that utilizes existing control signaling.
  15. 15. Network node (106) for wireless communication with user equipment (UE) (102A), during an interval, the network node (106) configured to: generate control information corresponding to the interval, the control information indicating that UE (102A) should generate and transmit acknowledgment (ACK) or negative acknowledgment (NACK) feedback during the interval for a downlink signal received by UE (102A) or by another UE (102B) during the interval; transmit the control information to UE (102A); characterized in that the network node is additionally configured to: transmit, during the interval, an intermediate downlink signal to UE (102A) after the downlink signal is completely received and before the transmission of the ACK or NACK feedback begins, wherein the network node (106) transmitting (406) the intermediate downlink signal comprises the network node (106) transmitting a part of a continuous downlink signal, wherein the reception of the continuous downlink signal by UE (102A) begins before the downlink signal is fully received.
  16. 16. Computer-readable storage medium, characterized in that it comprises instructions which, when executed by at least one processor of a network node (106), cause the network node (106) to execute the method as defined in claim 9.

Description

REQUEST FOR PRIORITY [001] This application claims priority to U.S. Provisional Patent Application No. 62/414,636, entitled “Receiver-Specific Transmission Length,” filed October 28, 2016, the entirety of which is incorporated by reference. TECHNICAL FIELD [002] The present description generally refers to wireless communication systems, and specifically refers to the timing of wireless signal transmissions within the wireless communication system. FUNDAMENTALS [003] In current wireless communication systems, after processing a signal received from a network node (e.g., base station, NodeB, eNB, etc.), a user device (UE) can generate and transmit an acknowledgment (ACK) or negative acknowledgment (NACK) to the network node as feedback, indicating whether the received signal was successfully received. In some of these systems, the UE can generate and transmit the ACK/NACK signal (“AN” or “A/N”) within the same interval during which the downlink signal was received. For this same ACK/NACK signal transmission interval to occur, the processing time required for the UE to generate the ACK/NACK signal must typically be less than the time remaining in the interval (minus residual time, e.g., time required for actual uplink ACK/NACK transmission), followed by the symbol during which the downlink signal was transmitted by the network node and received by the UE. [004] Because this processing time is typically longer than an Orthogonal Frequency Division Multiplexing (OFDM) symbol in a range (e.g., containing seven OFDM symbols), a conservative interval of multiple OFDM symbols in the uplink/downlink frame structure is created in some implementations to allow UEs communicating with a temporary network node on-demand access to the medium (e.g., one or more carriers used for UE network node communication during a certain period of time) to transmit the ACK/NACK signal after its required processing is completed. In examples where the ACK/NACK signal processing time is relatively long (e.g., greater than two OFDM symbols), a substantial opportunity cost to system performance may arise as a result of the medium being effectively unused as UEs and network nodes wait for ACK/NACK processing resolution. [005] Thus, improved uplink control frame structures and related techniques for uplink control signal transmission are needed to optimize performance and resource utilization compared to existing systems. SUMMARY [006] One or more embodiments herein employ different potential programming techniques, frame structures, and control information communication methods for signal communication in a wireless environment. Specifically, the network and one or more UEs can communicate wirelessly during one or more provisional symbols concurrent with ACK/NACK processing in a particular UE. By implementing frame structures that allow uplink and/or downlink communication during ACK/NACK-related processing, channel utilization and communication performance can be increased at the link/channel level and, correspondingly, at the system level when aggregated. [007] In particular, the embodiments presented below include an exemplary method performed by a network node for wireless communication with one UE and another UE during an interval. The exemplary method may include generating control information corresponding to the interval, the control information indicating that the UE or the other UE is about to transmit ACK or NACK feedback in the interval for a downlink signal received by the UE or the other UE in the interval. The method may include transmitting the control information to the UE and to the other UE, and transmitting, during the interval, an intermediate downlink signal to the UE and/or to the other UE or receiving an intermediate uplink signal from the UE and/or the other UE after the downlink signal is completely received and before the transmission of the ACK or NACK feedback begins. [008] The description also presents an exemplary method performed by a UE for wireless communication with a network node during a range. The method may include determining, based on range-corresponding control information, that the UE or another UE communicating with the network node is about to transmit ACK or NACK feedback within the range for a downlink signal received by the UE or another UE within the range. The method may further include transmitting an intermediate uplink signal to the network node or receiving an intermediate downlink signal from the network node after the downlink signal is fully received and before the transmission of the ACK or NACK feedback begins. [009] The embodiments described herein also include devices (e.g., UEs, network nodes, modules, components, units, etc.), computer programs and carriers (e.g., computer program products) corresponding to these methods. BRIEF DESCRIPTION OF THE DRAWINGS [0010] Figure 1 is a block diagram of a wireless communication system according to one or more modes. [0011] Figure 2 is a tabl