Scheduling timing design for a TDD system

• US 10,637,635 B2
• Filed: 05/10/2019
• Issued: 04/28/2020
• Est. Priority Date: 03/16/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: He, Hong, Fwu, Jong-Kae, Huang, Rui
• Primary Examiner(s): Soe, Kyaw Z
• Application Number:
  US16/408,724
• Publication Number:
  US 20190372744A1
• Time in Patent Office: 354 Days
• CPC Class Codes: H04J 11/0073 Acquisition of primary synchronisation channel, e.g. detection of cell-ID within cell-ID group
• CPC Class Codes: H04L 1/0033 arrangements specific to the transmitter
• CPC Class Codes: H04L 1/0077 Cooperative coding
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 1/1635 Cumulative acknowledgement, i.e. the acknowledgement message applying to all previous messages
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1819 with retransmission of additional or different redundancy
• CPC Class Codes: H04L 1/1825 Adaptation of specific ARQ protocol parameters according to transmission conditions
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 1/1864 ARQ related signaling H04L1/1607 takes precedence
• CPC Class Codes: H04L 1/1877 for semi-reliable protocols, e.g. for less sensitive applications like streaming video buffer level management for video bitstream control arrangements H04N21/44004
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/189 Transmission or retransmission of more than one copy of a message
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04L 12/2854 Wide area networks, e.g. public data networks
• CPC Class Codes: H04L 47/283 in response to processing delays, e.g. caused by jitter or round trip time [RTT]
• CPC Class Codes: H04L 47/6275 based on priority
• CPC Class Codes: H04L 5/001 : the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 : Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 : Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0073 : Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/14 : Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 5/1438 : Negotiation of transmission parameters prior to communication modified according to link quality H04L1/0001
• CPC Class Codes: H04L 5/1446 : of transmission speed
• CPC Class Codes: H04L 5/1469 : using time-sharing
• CPC Class Codes: H04L 65/75 : Media network packet handling
• CPC Class Codes: H04L 65/752 : adapting media to network capabilities
• CPC Class Codes: H04L 65/756 : adapting media to device capabilities
• CPC Class Codes: H04L 67/02 : based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 67/568 : Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04N 21/25841 : involving the geographical location of the client retrieval from the Internet by querying based on geographical locations G06F16/9537; arrangements for identifying locations of receiving stations in broadcast systems H04H60/51; location of the user terminal in data switching networks H04L67/52; services making use of the location of users or terminals in wireless networks H04W4/02; locating users or terminals in wireless networks H04W64/00
• CPC Class Codes: H04N 21/41407 : embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/6405 : Multicasting data broadcast and multicast in packet switching networks H04L12/18
• CPC Class Codes: H04N 21/6408 : Unicasting
• CPC Class Codes: H04W 16/04 : Traffic adaptive resource partitioning
• CPC Class Codes: H04W 24/00 : Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 24/02 : Arrangements for optimising operational condition
• CPC Class Codes: H04W 28/0236 : radio quality, e.g. interference, losses or delay
• CPC Class Codes: H04W 28/0268 : using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] negotiating SLA or negotiating QoS H04W28/24
• CPC Class Codes: H04W 28/0278 : using buffer status reports dynamic wireless traffic scheduling definition H04W72/12
• CPC Class Codes: H04W 4/06 : Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 52/02 : Power saving arrangements in wired systems H04L12/12; signaling of mobile application services, e.g. low battery notifications H04W4/20
• CPC Class Codes: H04W 52/0206 : in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/0209 : in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/0229 : where the received signal is a wanted signal
• CPC Class Codes: H04W 52/0235 : where the received signal is a power saving command
• CPC Class Codes: H04W 52/143 : Downlink power control
• CPC Class Codes: H04W 52/243 : taking into account interferences
• CPC Class Codes: H04W 72/04 : Wireless resource allocation
• CPC Class Codes: H04W 72/0446 : Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/12 : Wireless traffic scheduling
• CPC Class Codes: H04W 72/1268 : of uplink data flows
• CPC Class Codes: H04W 72/1273 : of downlink data flows
• CPC Class Codes: H04W 72/20 : Control channels or signalling for resource management
• CPC Class Codes: H04W 72/21 : in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 : in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/27 : between access points
• CPC Class Codes: H04W 72/51 : based on terminal or device properties
• CPC Class Codes: H04W 72/541 : using the level of interference
• CPC Class Codes: H04W 72/569 : of the traffic information
• CPC Class Codes: H04W 74/085 : collision avoidance
• CPC Class Codes: H04W 76/27 : Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 : Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

Disclosed is a method of transmitting, from an enhanced Node B (eNB), an indication of an uplink/downlink (UL-DL) subframe configuration of a scheduling cell and a scheduled cell in a wireless time-division duplex (TDD) system. Embodiments include identifying the type of the UL-DL subframe configuration of the scheduling cell and determining a UL-DL subframe configuration to use for UL resource allocation of the scheduled cell. Other embodiments include identifying a reference UL-DL subframe configuration to use for UL resource allocation of the scheduled cell.

Claims

1. One or more non-transitory, computer-readable media (CRM) having instructions, stored thereon, that when executed by one or more processors cause a user equipment (UE) to perform operations, comprising:

identifying a first uplink/downlink (UL-DL) subframe configuration of a first cell in a wireless time-division duplex (TDD) system;

identifying a second UL-DL subframe configuration of a second cell, wherein the second cell is a secondary cell, and wherein the UE is to monitor a physical downlink control channel in the first cell to receive scheduling information for the second cell;

determining whether a combination of the first UL-DL subframe configuration and the second UL-DL subframe configuration belongs to a first set of combinations or a second set of combinations;

if the combination belongs to the first set of combinations, using a hybrid automatic repeat request (HARQ) acknowledgement timing of the first UL-DL subframe configuration for transmission of a physical uplink shared channel (PUSCH) on the second cell; and

if the combination belongs to the second set of combinations, using a HARQ acknowledgement timing of the second UL-DL subframe configuration for transmission of a PUSCH on the second cell.

2. The one or more non-transitory CRM of claim 1, wherein the first set of combinations includes the first UL-DL subframe configuration of 1 and the second UL-DL subframe configuration of 2.

3. The one or more non-transitory CRM of claim 2, wherein the second set of combinations includes the first UL-DL subframe configuration of 0 and the second UL-DL subframe configuration of 1.

4. The one or more non-transitory CRM of claim 1, wherein the first cell is a primary cell.

5. The one or more non-transitory CRM of claim 1, wherein the operations of the UE further comprise:

communicating on the first and second cells using carrier aggregation.

6. The one or more non-transitory CRM of claim 1, wherein the first set of combinations includes combinations for which the first UL-DL subframe configuration has an uplink round trip time (RTT) for a HARQ process of 10 milliseconds, and wherein the second set of combinations includes combinations for which the first UL-DL subframe configuration has an uplink RTT different than 10 milliseconds.

7. The one or more non-transitory CRM of claim 1, wherein the first and second UL-DL subframe configurations are identified based on respective indications of the first and second UL-DL subframe configurations received by the UE.

8. One or more non-transitory, computer-readable media (CRM) having instructions, stored thereon, that when executed by one or more processors cause an evolved Node B (eNB) of a wireless cellular network to perform operations, comprising:

identifying a first uplink/downlink (UL-DL) subframe configuration of a first cell in a wireless time-division duplex (TDD) system;

identifying a second UL-DL subframe configuration of a second cell, wherein the second cell is a secondary cell, and wherein a user equipment (UE) is to monitor a physical downlink control channel in the first cell to receive scheduling information for the second cell;

determining whether a combination of the first UL-DL subframe configuration and the second UL-DL subframe configuration belongs to a first set of combinations or a second set of combinations;

if the combination belongs to the first set of combinations, using a hybrid automatic repeat request (HARQ) acknowledgement timing of the first UL-DL subframe configuration for reception of a physical uplink shared channel (PUSCH) from the UE on the second cell; and

if the combination belongs to the second set of combinations, using a HARQ acknowledgement timing of the second UL-DL subframe configuration for reception of a PUSCH from the UE on the second cell.

9. The one or more non-transitory CRM of claim 8, wherein the first set of combinations includes the first UL-DL subframe configuration of 1 and the second UL-DL subframe configuration of 2.

10. The one or more non-transitory CRM of claim 9, wherein the second set of combinations includes the first UL-DL subframe configuration of 0 and the second UL-DL subframe configuration of 1.

11. The one or more non-transitory CRM of claim 8, wherein the first cell is a primary cell.

12. The one or more non-transitory CRM of claim 8, wherein the operations of the eNB further comprise:

communicating with the UE on the second cell using carrier aggregation with the first cell.

13. The one or more non-transitory CRM of claim 8, wherein the first set of combinations includes combinations for which the first UL-DL subframe configuration has an uplink round trip time (RTT) for a HARQ process of 10 milliseconds, and wherein the second set of combinations includes combinations for which the first UL-DL subframe configuration has an uplink RTT different than 10 milliseconds.

14. The one or more non-transitory CRM of claim 8, wherein the instructions, when executed, further cause the eNB to perform operations, comprising:

transmitting, to the UE, an indication of the second UL-DL subframe configuration.

15. An apparatus to be implemented in a user equipment (UE), the apparatus comprising:

a memory; and

a processor coupled to the memory, and configured to;

store, in the memory, a first uplink/downlink (UL-DL) subframe configuration of a first cell in a wireless time-division duplex (TDD) system;

store, in the memory, a second UL-DL subframe configuration of a second cell;

determine that the second cell is a secondary cell, and wherein the UE is to monitor a physical downlink control channel in the first cell to receive scheduling information for the second cell;

based on the determination and if the first UL-DL subframe configuration is 1 and the second UL-DL subframe configuration is 2, use a reference UL-DL subframe configuration of 1 to determine a timing for a physical uplink shared channel (PUSCH) on the second cell; and

based on the determination and if the first UL-DL subframe configuration is 0 and the second UL-DL subframe configuration is 1, use a reference UL-DL subframe configuration of 1 to determine the timing for the PUSCH on the second cell.

16. The apparatus of claim 15, wherein the processor is further configured to encode hybrid automatic repeat request (HARQ) feedback information for transmission in the PUSCH.

17. The apparatus of claim 15, wherein the first cell is a primary cell.

18. The apparatus of claim 15, wherein the processor is further configured to cause the UE to communicate on the first and second cells using carrier aggregation.

19. The apparatus of claim 15, wherein the first UL-DL subframe configuration of 1 has an uplink round trip time (RTT) for a HARQ process of 10 milliseconds, and wherein the first UL-DL subframe configuration of 2 has an uplink RTT different than 10 milliseconds.

20. The apparatus of claim 15, wherein the processor is further configured to:

receive respective indications of the first and second UL-DL subframe configurations; and

store, in the memory, the first and second UL-DL subframe configurations.