KR20130130097A - Method and apparatus for selecting multiple transport formats and transmitting multiple transport blocks simultaneously with multiple h-arq processes - Google Patents

Abstract

A method and apparatus are disclosed for selecting multiple transmission formats and transmitting multiple transmission blocks (TBs) simultaneously during a transmission time interval (TTI) using multiple hybrid automatic retransmission request (H-ARQ) processes in a wireless communication system. The available physical resources and the H-ARQ processes associated with these available resources are identified, and the channel quality for each of these available physical resources is determined. Quality of service (QoS) requirements of the higher layer data to be transmitted are determined. Upper layer data is mapped to at least two H-ARQ processes. Physical transport and H-ARQ configurations are determined to support the QoS requirements of higher layer data mapped to each H-ARQ process. TBs are generated from higher layer data mapped according to each of the H-ARQ configuration and the physical transmission of each H-ARQ process. TBs are transmitted simultaneously through the H-ARQ process.

Description

METHOD AND APPARATUS FOR SELECTING MULTIPLE TRANSPORT FORMATS AND TRANSMITTING MULTIPLE TRANSPORT BLOCKS SIMULTANEOUSLY WITH MULTIPLE H-ARQ PROCESSES}

The present invention relates to a wireless communication system. More specifically, the present invention provides a method for selecting multiple transmission formats and transmitting multiple transmission blocks (TB) simultaneously during a transmission time interval (TTI) using multiple hybrid automatic retransmission request (H-ARQ) processes in a wireless communication system; Relates to a device.

The goals of advanced high-speed packet access (HSPA +) and long-term evolution (LTE) of universal terrestrial radio access (UTRA) and universal terrestrial radio access network (UTRAN) are high data rates, low latency, packet optimization, and improved system performance. And developing a radio access network for coverage. In order to achieve this goal, the evolution of air interface and wireless network architecture is under consideration. In HSPA +, air interface technology is still based on code division multiple access (CDMA), but a more efficient physical layer that can include independent channelization codes (differentiated in terms of channel quality), and multiple input multiple output (MIMO). We will use the structure. In LTE, orthogonal frequency division multiple access (OFDMA) and frequency division multiple access (FDMA) have been proposed as techniques with air interfaces used for the downlink and uplink, respectively.

 H-ARQ has been adopted by several wireless communication standards, including third generation partnership projects (3GPP) and 3GPP2. In addition to the Automatic Retransmission Request (ARQ) functionality of the Radio Link Control (RLC) layer, H-ARQ improves throughput, compensates for link adaptation errors, and provides an efficient transmission rate over the channel. Delays due to H-ARQ feedback (ie, positive acknowledgment (ACK) or negative acknowledgment (NACK)) are significantly reduced by placing H-ARQ functionality at Node B rather than Radio Network Control (RNC). The user equipment (UE) may combine the soft bits of the original transmission with the soft bits of subsequent retransmissions to achieve high block error rate (BLER) performance. Chase combining or redundancy increasing may be implemented.

Asynchronous H-ARQ is used for high speed downlink packet access (HSDPA) and synchronous H-ARQ is used for high speed uplink packet access (HSUPA). In both HSDPA and HSUPA, the radio resource allocated for transmission is the number of codes in a particular frequency band based on channel quality indicator (CQI) feedback. There is no difference between the channelization codes. Therefore, one HSDPA media access control (MAC-hs) flow or one HSUPA media access control (MAC-e / es) flow, multiplexed from a multi-dedicated channel MAC (MAC-d) flow, is assigned to one H-ARQ process. One cyclic redundancy check (CRC) is attached to one transport block.

New physical layer features introduced in HSPA + include MIMO and different channelization codes. New physical layer characteristics introduced in LTE include MIMO and different subcarriers (either centralized or distributed). With the introduction of these new physical layer characteristics, the performance of the conventional single H-ARQ scheme and transport format combination (TFC) selection procedure must be changed. In the conventional single H-ARQ scheme, only one H-ARQ process is active at a time and only one TFC of one transmission data block needs to be determined for each TTI. Conventional TFC selection procedures do not have the ability to select a TFC for more than one data block of multiple H-ARQ processes.

It is an object of the present invention to provide a method and apparatus for selecting multiple transmission formats and transmitting multiple TBs simultaneously during a TTI using multiple H-ARQ processes in a wireless communication system.

The present invention relates to a method and apparatus for selecting multiple transmission formats and transmitting multiple TBs simultaneously during a TTI using a multiple H-ARQ process in a wireless communication system. The available physical resources and the channel quality of each of the available physical resources are determined, and H-ARQ processes associated with the available physical resources are identified. Quality of service (QoS) requirements of the higher layer data flow (s) to be transmitted are determined. Upper layer data flow (s) are mapped to at least two H-ARQ processes. Physical transport parameters and H-ARQ configuration are determined to support the QoS requirements of higher layer data flow (s) that are mapped to each H-ARQ process. TBs are each generated from the higher layer data flow (s) mapped according to the H-ARQ configuration and the physical transmission parameters of each H-ARQ process. TBs are transmitted simultaneously via H-ARQ processes.

According to the present invention, the method and apparatus of the present invention simultaneously selects multiple transmission formats and transmits multiple transmission blocks (TBs) during transmission time intervals (TTIs) using multiple hybrid automatic retransmission request (H-ARQ) processes in a wireless communication system. It is possible to send them.

The invention may be understood in more detail from the following description of the preferred embodiments, which is provided by way of example and is understood in conjunction with the accompanying drawings.
1 is a block diagram of an apparatus constructed in accordance with the present invention.
2 is a flow diagram of a process for simultaneously transmitting multiple TBs during TTI using multiple H-ARQ processes in accordance with the present invention.

As referred hereinafter, the term "WTRU" refers to a user equipment (UE), mobile station, fixed subscriber unit or mobile subscriber unit, pager, cellular telephone, personal digital assistant (PDA), computer, or wireless. It includes, but is not limited to, any other type of user device capable of operating in an environment. As referred to hereinafter, the term "base station" includes, but is not limited to, Node B, Evolved Node B (eNB), Site Controller, Access Point (AP) or any other type of interface device capable of operating in a wireless environment. It is not limited to.

The present invention is applicable to any wireless communication system including, but not limited to, wideband code division multiple access (WCDMA), CDMA 2000, HSPA +, LTE and 3GPP systems, OFDM, MIMO or OFDM / MIMO.

Features of the invention may be integrated on an integrated circuit (IC) or may be configured in a circuit that includes a plurality of interconnecting components.

Different antenna spatial beams or channelization codes may experience different channel qualities that may be indicated by CQI feedback. Regardless of the quality of subcarriers, spatial beams and channelization codes, the same adaptive modulation and coding (AMC) may be applied to all subcarriers, spatial beams or channelization codes. Alternatively, channel state may be used to apply different AMC to different subcarriers, spatial beams or channelization codes to maximize performance.

When AMC is used that depends on subcarrier, spatial beam or channelization code, each data block assigned to each subcarrier, spatial beam or channelization code is associated with one CRC in accordance with the present invention. Otherwise, because the entire packet is associated with a single CRC, when a transmission error occurs, the entire packet distributed to different subcarriers, spatial beams or channelization codes needs to be retransmitted. Retransmitting all data blocks already correctly received is a waste of valuable radio resources. When MIMO is used, the same situation occurs because each antenna can be affected by a different channel condition. Thus, in the case where a multi-dimensional H-ARQ process with respective H-ARQ processes corresponding to one or more subcarriers, channelization codes, transmit antennas (or spatial beams) is used, according to the invention, a separate CRC Is attached to each transport data block. In the conventional single H-ARQ scheme, only one H-ARQ process is active at a time and only one TFC of transport block data needs to be determined for each TTI. Conventional TFC selection procedures do not have the ability to select a TFC for more than one data block of multiple H-ARQ processes to adequately support the QoS requirements of higher layer data flows.

1 is a block diagram of an apparatus 100 for simultaneously transmitting multiple transport blocks (TBs) during a transmission time interval (TTI) using multiple H-ARQ processes in accordance with the present invention. Device 100 may be a WTRU, a Node B, or any other communication device. Apparatus 100 includes a plurality of H-ARQ processes 102a-102n, a plurality of multiplexing and link adaptation processors 104a-104n, and a controller 106. Each multiplexing and link adaptation processor 104a-104n is associated with one H-ARQ process 102a-102n. Each multiplexing and link adaptation processor 104a-104n receives physical resource configurations (ie, distributed subcarriers or centralized subcarriers, MIMO antenna configurations, etc.), and CQIs associated with these physical resources.

Each available H-ARQ process 102a-102n is associated with a particular set of physical resources. The combination of physical resources into the H-ARQ processes 102a-102n may be determined dynamically or this combination may be configured semi-statically. The network entity (eg, eNB scheduler) determines how many physical resources should be allocated. Each time a TFC is selected by the multiplexing and link adaptation processor 104a-104n, or whenever the H-ARQ processor 102a-102n generates an H-ARQ retransmission for a particular TB, Associated physical resources may be dynamically reallocated. Reallocation of physical resources may be performed based on the CQI of a particular physical resource or determined based on a predetermined hopping pattern.

Multiplexing and link adaptation processors 104a-104n independently perform link adaptation for each set of physical resources and associated H-ARQ processes 102a-102n. Each multiplexing and link adaptation processor 104a-104n determines a modulation and coding scheme (MCS), multiplexed TB, transmit power requirements, H-ARQ redundancy version, and the maximum number of retransmissions in each TTI. This set of transmission information is provided to each H-ARQ process 102a-102n.

Physical resources are independent spatial streams (if MIMO is implemented) in the spatial domain, independent subcarriers (if OFDMA or FDMA is implemented) in the frequency domain, and independent channelization codes (if CDMA is implemented) in the code domain , Time slots may be defined by independent time slots, or any combination thereof. Independent subcarriers may be distributed or centralized. Channelization code is a physical resource that can be allocated independently to different TBs. In a CDMA system, different channelization codes may be assigned to transmit several TBs based on one TB or channel state and data rate requirements for each TB. The maximum number of TBs that can be transmitted is less than or equal to the maximum number of channelization codes available. If several independent spatial streams, subcarriers, or channelization codes are available, several TBs may be sent simultaneously over different physical resources using several H-ARQ processes. For example, if two spatial streams are available in a 2x2 MIMO system, two TBs may be transmitted over two spatial streams using two independent H-ARQ processes.

Different physical resources (ie different subcarriers, antenna spatial beams, channelization codes or time slots) may experience different channel quality. The quality of each physical resource is determined by one or more CQI measurements. CQI may be fed back from the communication terminal or obtained based on channel correlation. In addition, the CQI may be represented by an allocated MCS and / or a maximum transport block size.

The controller 106 identifies the available physical resources and the H-ARQ processes associated with the available physical resources. Since each H-ARQ process 102a-102n is associated with a particular physical resource, the available H-ARQ process is also identified if an available physical resource is identified. Available physical resources and associated H-ARQ processes may be determined at the start of the common TTI boundary. In addition, the coupling may be configured semi-statically for the duration of multiple TTIs.

Available physical resources are the number of independent spatial streams, subcarriers, channelization codes and time slots that can be used for data transmission within a particular period of time. The physical resources available in one WTRU are the number of WTRUs that Node B needs to support in one cell, the level of interference from other cells, the channel status of the WTRU, (such as priority, latency, fairness, and buffer status). It depends on many factors such as the QoS level of the service that the WTRU needs to support, the data rate that one WTRU needs to support, and so on.

According to the present invention, multiple H-ARQ processes 102a-102n operate in parallel at the same time. Since the H-ARQ processes 102a-102n may take different retransmissions for successful transmission, and the data flows mapped to the H-ARQ processes 102a-102n determine different maximum retransmissions or different TTI sizes. Since H-ARQ processes are not synchronized with each other because they may have QoS requirements, certain H-ARQs may not be available. Any number of H-ARQ processes can be made available for any TTI. In accordance with the present invention, more than one H-ARQ process and associated set of physical resources are made available during a common TTI. The association between the H-ARQ process and the physical resource is coordinated by the controller 106.

The controller 106 may combine the upper layer data flows 108a-108m (ie, multiple flows of a MAC or RLC protocol data unit (PDU)) with at least two multiplexing and link adaptation processors 104a-104n and their associated Hs. -Maps to the ARQ processes 102a-102n. The same higher layer data flows 108a-108m may be mapped to more than one multiplexing and link adaptation processor 104a-104n and H-ARQ processes 102a-102n during a common TTI for QoS normalization. By mapping the same higher layer data flow or set of higher layer data flows to multiple H-ARQ processes, QoS requirements throughout the H-ARQ processes 102a-102n match. In this case, each multiplexing and link adaptation processor 104a-104n performs MCS, in accordance with the CQI of the associated set of physical resources, such that the QoS obtained for each transmission of a higher layer data flow or set of data flows is as similar as possible. Determine transport block size, transmit power, maximum H-ARQ transmission and retransmission parameters.

Alternatively, the higher layer data flows 108a-108m, which can be grouped according to QoS requirements, are based on different H-ARQ based on the CQI and data flow QoS requirements associated with the set of physical resources assigned to each H-ARQ process. By mapping to processes 102a-102n, inequality error protection can also be achieved. For example, CQI may view one set of physical resources as being better than another set of physical resources. Higher layer data flows with higher QoS requirements may be mapped to H-ARQ processes associated with better physical resources. The number of higher layer data flows to be mapped to a particular H-ARQ process is determined based on the QoS requirements, packet size, H-ARQ capacity, etc. of the higher layer data flows. Once each higher layer data flow is transmitted using a particular H-ARQ process, these data flows are multiplexed through multiplexing and link adaptation processors 104a-104n of different H-ARQ processes.

Each multiplexing and link adaptation processor 104a-104n receives inputs (such as CQIs of allocated physical resources, buffer occupancy of mapped data flows, etc.), and the higher layer data flows mapped to each H-ARQ process ( 108a-108m) to determine the physical transmission parameters and H-ARQ configuration to support QoS requirements. Physical transmission parameters include transmit power, modulation and coding scheme, TTI size, transport block size and beamforming pattern, subcarrier allocation, MIMO antenna configuration, and the like. H-ARQ configuration parameters include H-ARQ identity, maximum number of retransmissions, redundancy version (RV), CRC size, and the like. Multiplexing and link adaptation processors 104a-104n provide H-ARQ parameters to associated H-ARQ processes 102a-102n.

Multiplexing and link adaptation processors 104a-104n may apply the same MCS, transport block size, TTI size and / or transmit power to all physical resources, regardless of the quality of the physical resources. Alternatively, the multiplexing and link adaptation processors 104a-104n may apply different MCS, transport block size, TTI size and / or transmit power to different physical resources based on channel conditions to maximize performance.

Where AMC and H-ARQ operations that depend on physical resources are used, each data block allocated to each physical resource is preferably associated with a separate CRC. Using this approach, because each transport block is associated with a separate CRC and processed by separate H-ARQ processes 102a- 102n, the entire packet distributed to different physical resources needs to be retransmitted in the event of a transmission error. There is no.

The multiplexing and link adaptation processor 104a-104n may transmit an appropriate TFC (i.e., TB size, TB set size, TTI size, modulation and coding scheme (MCS), transmission, based on channel quality indicator and physical transmission parameters). After selecting power, antenna beam, subcarrier allocation, CRC size, redundancy version (RV) and data block mapping to radio resources, etc.), TBs are generated from the allocated higher layer data flows 112a-112m. One or more higher layer data flows may be multiplexed into one TB. Separate CRCs are each attached to the TBs for separate error detection and H-ARQ processing. Each TB and associated transmission parameters are provided to the assigned H-ARQ processes 102a-102n. The TBs are then transmitted via the assigned H-ARQ processes 102a-102n respectively.

Parameters supporting multiple H-ARQ processes prior to transmission can be signaled to the receiving peer, or a blind detection technique can be used for this receiving peer to decode the transmission parameters. TBs generated along with the associated transmission parameters are sent to H-ARQ processes 102a-102n for transmission.

2 is a flowchart of a process 200 for simultaneously transmitting multiple TBs during TTI using a multiple H-ARQ process in accordance with the present invention. The channel quality of the available physical resources and the physical resources associated with each H-ARQ process 102a-102n are identified (step 202). QoS requirements and buffer occupancy of the higher layer data flows 112a-112m to be transmitted are determined (step 204). It should be noted that the steps of process 200 may be performed in a different order, and some steps may be performed in parallel. For example, step 204 may be applied before or simultaneously with step 202.

The controller 106 can determine the type of the higher layer data flow based on the QoS parameters associated with the higher layer data flow for TFC selection processing. The controller 106 may also determine the order in which higher layer data flows are serviced. The order of processing may be determined by QoS requirements or absolute priority. Alternatively, the lifetime parameter may be used to determine how long the higher layer data packet lasts in the H-ARQ queue, so that the controller 106 may prioritize or discard the higher layer data packet based on the lifetime parameter. have.

Upper layer data flows 112a-112 are mapped to each H-ARQ process 102a-102n by the controller 106. The physical transport parameters and the H-ARQ configuration are available to support the required QoS of the higher layer data flows 112a-112m mapped to each of the H-ARQ processes 102a-102n. Is determined per step (step 206). If more than one H-ARQ process is available for transmission during TTI, it is necessary to determine which higher layer data flows 112a-112m should be mapped to different H-ARQ processes. Upper layer data flows 112a-112m may or may not have similar QoS requirements.

If all or a subset of the upper layer data flows 112a-112m mapped to different H-ARQ processes require similar QoS, the QoS provided by the H-ARQ processes 102a-102n is normalized, MCS, Transmission parameters such as TB size and transmit power and H-ARQ configuration are adjusted during each TTI, and the TFC is selected so that the QoS provided throughout the H-ARQ processes 102a-102n is similar. QoS normalization across multiple H-ARQ processes 102a-102n can be realized by adjusting link adaptation parameters (eg, MCS, TB size, transmit power, etc.) across H-ARQ processes 102a-102n. have. For example, an upper MCS may be allocated to a physical resource having a better channel quality, and a lower MCS may be allocated to a physical resource having a worse channel quality. This multiplexes data blocks with different sizes in different H-ARQ processes.

Alternatively, if higher layer data flows 112a-112m require different QoS, the higher layer data flows 112a-112m have a quality that closely matches the QoS requirements of the higher layer data flows 112a-112m. It may be mapped to H-ARQ processes 102a-102n associated with the physical resource. An advantage of using multiple H-ARQ processes is the flexibility to multiplex logical channels or MAC flows with different QoS requirements for different H-ARQ processes 102a-102n and associated physical resources. If a particular physical resource indicates better channel quality than other resources, data with higher QoS is mapped to the H-ARQ process associated with that physical resource. This improves physical resource utilization and maximizes system throughput. Alternatively, or in addition, the MCS and / or the maximum number of retransmissions may be configured to distinguish QoS that more closely matches the QoS requirements of the logical channel or MAC flow.

After the upper layer data flows 112a-112m are mapped to the H-ARQ processes 102a-102n, by multiplexing the upper layer data flows 112a-112m associated with each H-ARQ process 102a-102n, A TB for each H-ARQ process 102a-102n is generated, respectively, according to the physical transmission parameters and the H-ARQ configuration for each H-ARQ process 102a-102n (step 208). Data multiplexing for each H-ARQ process 102a-102n may be processed sequentially or in parallel. TBs can then be transmitted simultaneously via the associated H-ARQ processes 102a-102n (step 210).

The transmitted TBs may or may not be successfully received at the communication terminal. Bad TBs are retransmitted during subsequent TTIs. Preferably, the size of the TB to be retransmitted remains the same for soft coupling at the communication terminal. Several options are available for retransmission of bad TBs.

According to the first option, the physical resource allocated for H-ARQ retransmission of the TB is not changed (ie, the bad TB is retransmitted through the same physical resource and the H-ARQ process). The transmission parameters and the H-ARQ configuration (ie, TFC) can be changed. In particular, link adaptation parameters (such as antenna selection, AMC or transmit power) may be changed to maximize the chance of successful delivery of the retransmitted TB. If the link adaptation parameters are changed for retransmission of the bad TB, the changed parameters can be signaled to the receiving terminal. Alternatively, blind detection techniques can be applied to the receiving terminal to eliminate signaling overhead for modified parameters.

According to a second option, the physical resources allocated for H-ARQ retransmission of the transport block may be dynamically reallocated (ie, bad TBs are retransmitted via different physical resources and the same H-ARQ process). Reallocation of physical resources may be based on CQI or based on known hopping patterns.

In another option, bad H-ARQ transmissions can be fragmented across multiple H-ARQ processes, and each fragment can be transmitted independently to increase the probability of successful H-ARQ transmission. According to this option, the physical resources of the TB to be resent are newly allocated (i.e., the bad TB is transmitted via a different H-ARQ process). The H-ARQ process used to transmit the bad TB during the previous TTI becomes available for transmission of any other TB during the subsequent TTI. The maximum transmit power, the number of subcarriers and channelization codes, the number of antennas or the allocation of antennas and the recommended MCS can be reallocated for retransmission of bad TBs. Preferably, a newly allocated subset of TFCS can be created to reflect the physical resource change for the bad TB. New parameters may be signaled to the receiving terminal to ensure successful reception. Alternatively, blind detection techniques can be applied to the receiving terminal to eliminate signaling overhead for modified parameters.

Examples

1. A method for transmitting multiple TBs during a TTI using multiple H-ARQ processes in a wireless communication system.

2. The method of embodiment 1, comprising identifying available physical resources and associated H-ARQ processes.

3. The method of any one of embodiments 1 or 2, comprising obtaining channel quality measurements for each of the available physical resources.

4. The method of any one of embodiments 1-3, comprising mapping at least one higher layer data flow to at least two H-ARQ processes.

5. The method of embodiment 4, comprising determining physical transport parameters and H-ARQ configuration to support QoS requirements of higher layer data flows mapped to each H-ARQ process.

6. The method of embodiment 5, comprising generating TBs from the mapped higher layer data flow, in accordance with each of the H-ARQ configuration and the physical transport parameter of each H-ARQ process.

7. The method of embodiment 6, comprising transmitting TBs simultaneously via an H-ARQ process.

8. The method of any one of embodiments 5-7, wherein the physical transmission parameters and the H-ARQ configuration include a TFC for each TB.

9. The method of any one of embodiments 2-8 wherein the communication nodes comprise multiple antennas for MIMO and the available physical resources are identified based on independent spatial data streams.

10. The method of any one of embodiments 2-9, wherein available physical resources are identified based on independent frequency subcarriers.

11. The method of embodiment 10, wherein the subcarriers are distributed subcarriers.

12. The method of embodiment 10, wherein the subcarriers are concentrated subcarriers.

13. The method of any one of embodiments 2-12, wherein available physical resources are identified based on independent channelization codes.

14. The method of any one of embodiments 2-13, wherein available physical resources are identified based on different time slots.

15. The method of any one of embodiments 2-14 wherein the combination of the physical resource and the H-ARQ process is determined dynamically.

16. The method of any one of embodiments 2-14 wherein the combination of physical resource and H-ARQ process is configured semi-statically.

17. The method of any one of embodiments 4-16, further comprising selecting a higher layer data flow to be transmitted during the next TTI, wherein only the selected higher layer data flow is mapped to the H-ARQ process.

18. The method of embodiment 17, wherein a packet on each upper layer data flow is assigned a lifetime, and selection of a packet for transmission is made based on this lifetime.

19. The method of any one of embodiments 5-18, wherein if the QoS requirements of higher layer data flows are similar, the physical transport and H-ARQ configuration is determined such that the QoS across available H-ARQ processes is similar.

20. The method of embodiment 19, wherein higher order MCS is applied to an H-ARQ process with high channel quality and lower order MCS is applied to an H-ARQ process with lower channel quality.

21. The method of any one of embodiments 19 or 20, wherein a maximum number of retransmissions is assigned to each H-ARQ process based on the QoS requirements of higher layer data flows mapped to the H-ARQ process.

22. The method of any one of embodiments 5-18, wherein if the QoS requirements of the higher layer data flow are not similar, each of the higher layer data flows is associated with a channel quality that closely matches the QoS requirements of the higher layer data flow. Maps to the H-ARQ process.

23. The method of any one of embodiments 5-18, wherein if the QoS requirements of the higher layer data flow are not similar, the maximum number of retransmissions is H- based on the QoS requirements of the higher layer data flow mapped to the H-ARQ process. Assigned to the ARQ process.

24. The method of any one of embodiments 2-23, wherein in the event of a TB transmission failure, the physical resource mapped to the H-ARQ process for retransmission of the TB is not changed.

25. The method of embodiment 24, wherein the physical transmission and the H-ARQ configuration are changed for retransmission of the TB.

26. The method of embodiment 24, wherein the TB is fragmented for retransmission.

27. The method of any one of embodiments 2-23, wherein in the case where transmission of the TB fails, the physical resource mapped to the TB is changed for retransmission of the TB.

28. The method of any one of embodiments 1-27, wherein the wireless communication system is an HSPA + system.

29. The method of any one of embodiments 1-27, wherein the wireless communication system is LTE of a 3G wireless communication system.

30. The method of any one of embodiments 2-29, wherein the available physical resources and associated H-ARQ processes are determined at the start of a common TTI boundary.

31. The method of any one of embodiments 5-30 wherein the physical transmission parameter includes an MCS for each TB.

32. The method of embodiment 31, wherein the MCS for each TB is selected to distinguish the QoS requirements of the TBs.

33. The method of embodiment 31, wherein the MCS for each TB is selected such that the QoS supported across H-ARQ processes is similar.

34. The method of any one of embodiments 5-33, wherein the physical transmission parameters include a transport block size for each TB.

35. The method of embodiment 34, wherein the TB size for each TB is selected to distinguish the QoS requirement of the TB.

36. The method of embodiment 34, wherein the TB size for each TB is selected such that the QoS supported across H-ARQ processes is similar.

37. An apparatus for transmitting multiple TBs simultaneously during a TTI using a multiple H-ARQ process in a wireless communication system.

38. The apparatus of embodiment 37, comprising a plurality of H-ARQ processes.

39. The apparatus of embodiment 38, wherein the available physical resources and H-ARQ processes associated with the available physical resources are identified and based on channel quality and QoS requirements of the higher layer data flow for each of the available physical resources. Map at least one higher layer data flow to at least two H-ARQ processes and determine physical transport parameters and H-ARQ configuration to support the QoS requirements of the higher layer data flow mapped to each H-ARQ process. And a controller configured to.

40. The apparatus of embodiment 39, comprising a plurality of multiplexing and link adaptation processors, each multiplexing and link adaptation processor associated with an H-ARQ process, the physical transmission parameters and the H- of each H-ARQ process. According to the ARQ configuration, it is configured to generate a TB from a higher layer data flow mapped to the multiplexing and link adaptation processor.

41. The apparatus of embodiment 40, wherein each multiplexing and link adaptation process determines a TFC for the mapped higher layer data flow.

42. The apparatus of embodiments 39-41, wherein the controller identifies the available physical resources based on the independent spatial data streams generated by the multiple antennas for MIMO.

43. The apparatus of any one of embodiments 39-42, wherein the controller identifies the available physical resource based on the independent subcarriers.

44. The apparatus of embodiment 43, wherein the subcarriers are distributed subcarriers.

45. The apparatus of embodiment 43, wherein the subcarriers are centralized subcarriers.

46. The apparatus of any one of embodiments 39-45, wherein the controller identifies the available physical resource based on the independent channelization code.

47. The apparatus of any one of embodiments 39-46, wherein available physical resources are identified based on different time slots.

48. The apparatus of any one of embodiments 39-47, wherein the combination of the physical resource and the H-ARQ process is determined dynamically.

49. The apparatus of any one of embodiments 39 to 47, wherein the combination of physical resource and H-ARQ process is configured semi-statically.

50. The apparatus of any one of embodiments 39-49, wherein the controller is configured to select at least one higher layer data flow to be transmitted during the next TTI and map only the selected higher layer data flow to the H-ARQ process.

51. The apparatus of embodiment 50, wherein packets on higher layer data flows are assigned lifetime times, and the controller selects packets for transmission based on the lifetime.

52. The apparatus of any one of embodiments 39-51, wherein if the QoS requirements of the higher layer data flow are similar, the controller determines the physical transport and H-ARQ configuration to normalize QoS across the available H-ARQ processes. do.

53. The apparatus of embodiment 52, wherein the controller applies the higher order MCS to the H-ARQ process with high channel quality and the lower order MCS to the H-ARQ process with low channel quality.

54. The apparatus of embodiment 52, wherein the controller assigns a maximum retransmission limit to each H-ARQ process based on the QoS requirements of higher layer data mapped to the H-ARQ process.

55. The apparatus of any one of embodiments 39-51, wherein if the QoS requirements of the higher layer data are not similar, the controller is assigned a higher layer to the H-ARQ process associated with the channel quality that closely matches the QoS requirements of the higher layer data. Map the data.

56. The apparatus of any one of embodiments 39-51, wherein if the QoS requirements of higher layer data are not similar, the controller is configured to maximize the H-ARQ process based on the QoS requirements of the higher layer data mapped to the H-ARQ process. Assign a retransmission limit.

57. The apparatus of any one of embodiments 39-56, wherein if the transmission of the TB fails, the controller allocates the same physical resource for retransmission of the TB.

58. The apparatus of embodiment 57, wherein the controller changes the physical transmission and H-ARQ configuration for retransmission of the TB.

59. The apparatus of any one of embodiments 57 or 58, wherein the controller fragments the TB for retransmission.

60. The apparatus of any one of embodiments 39-56, wherein if the transmission of the TB fails, the controller changes the physical resource for retransmission of the TB.

61. The apparatus of any one of embodiments 37-60, wherein the wireless communication system is an HSPA + system.

62. The apparatus of any one of embodiments 37-60, wherein the wireless communication system is LTE of a 3G wireless communication system.

63. The apparatus of any one of embodiments 39-62, wherein the available physical resources and associated H-ARQ processes are determined at the start of a common TTI boundary.

64. The apparatus of any one of embodiments 39-63, wherein the physical transmission parameter includes an MCS for each TB.

65. The apparatus of embodiment 64, wherein the MCS for each TB is selected to distinguish the QoS requirements of the TBs.

66. The apparatus of embodiment 64, wherein the MCS for each TB is selected such that the QoS supported throughout the H-ARQ process is similar.

67. The apparatus of any one of embodiments 39-66, wherein the physical transmission parameters include a transport block size for each TB.

68. The apparatus of embodiment 67, wherein the TB size for each TB is selected to distinguish the QoS requirements of the TB.

69. The apparatus of embodiment 67, wherein the TB size for each TB is selected such that the QoS supported across H-ARQ processes is similar.

While the features and elements of the invention have been described in the preferred embodiments in particular combinations, each feature or element may be used alone without the other features and elements of the preferred embodiments, or other features and elements of the invention It may or may not be used in various combinations. The methods and flow diagrams provided herein can be implemented with computer programs, software or firmware tangibly embodied in a computer readable storage medium for execution by a general purpose computer or processor. Examples of computer-readable storage media include read-only memory (ROM), random access memory (RAM), registers, cache memory, semiconductor memory devices, magnetic media such as internal hard disks or removable disks, optical magnetic media, and CD-. Optical media such as ROM disks and digital versatile disks (DVDs).

Suitable processors are, for example, general purpose processors, specialty processors, ordinary processors, digital signal processors (DSPs), multiple microprocessors, one or more microprocessors, controllers, microcontrollers, ASICs in conjunction with DSP cores. ), Field programmable gate array (FPGA) circuits, any other type of integrated circuit (IC), and / or state machine.

The processor associated with the software may be used to implement a radio frequency transceiver for use in a wireless transmit / receive unit (WTRU), user equipment (UE), terminal, base station, radio network controller (RNC), or any host computer. WTRUs include cameras, video camera modules, video phones, speakerphones, vibrators, speakers, microphones, television transceivers, hand-free handsets, keyboards, Bluetooth modules, frequency modulated (FM) radio units, liquid crystal display (LCD) display units, organic It can be used with modules implemented in hardware and / or software such as light emitting diode (OLED) display units, digital music players, media players, video game player modules, Internet browsers and / or wireless local area network (WLAN) modules.

Claims (85)

A method implemented in a wireless transmit receive unit (WTRU) for transmitting multiple transport blocks (TBs) during a transmission time interval (TTI),
Identifying at least two sets of available physical resources, each set of physical resources having a different frequency subcarrier, each set of physical resources being hybrid automatic repeat request (H-ARQ) processes Identifying physical resources, associated with the;
Obtaining channel quality measurements for each set of physical resources;
Mapping at least one higher layer data flow to at least two H-ARQ processes;
Each set of available physical resources and associated H-ARQ to support the Quality of Service (QoS) requirements of the upper layer data flow multiplexed into a transport block and provided to each H-ARQ process. Receiving physical transmission parameters for the process, the physical transmission parameters including a modulation and coding scheme (MCS) and H-ARQ configurations;
Multiplex the at least one higher layer data flow into TBs according to each set of available physical resources and the physical transmission parameters of the associated H-ARQ process and the H-ARQ configurations, and to the determined physical transmission parameters. In response and processing each TB on a subcarrier of the set of physical resources associated with the H-ARQ process of the transport block; And
Transmitting TBs through at least two H-ARQ processes in the TTI. 2. The method of claim 1, wherein the physical transmission parameters and H-ARQ configurations comprise a transport format combination (TFC) for each TB. 3. The method of claim 1, wherein the communication nodes include multiple antennas for multiple-input multiple-output (MIMO), and wherein the available physical resources are identified based on independent spatial data streams. Transmission block transmission method. 2. The method of claim 1, wherein the available physical resources are identified based on independent channelization codes. 2. The method of claim 1, wherein the available physical resources are identified based on different time slots. 2. The method of claim 1, wherein the combination of the physical resource and the H-ARQ process is dynamically determined. 2. The method of claim 1, wherein the combination of the physical resource and the H-ARQ process is semi-static. The method of claim 1,
Selecting a higher layer data flow to be transmitted during a next TTI, wherein only selected higher layer data flows are mapped to the H-ARQ process. 9. The method of claim 8,
Packets in each higher layer data flow are assigned a lifetime.
Wherein the selection of a packet for transmission is made based on the life time. 2. The method of claim 1, wherein if the QoS requirements of the higher layer data flow are similar, then the physical transport and H-ARQ configuration is determined such that QoS across the available H-ARQ processes is similar. Way. 11. The method of claim 10, wherein the higher order MCS is applied to an H-ARQ process with higher channel quality and the lower order MCS is applied to an H-ARQ process with lower channel quality. 11. The method of claim 10, wherein a maximum number of retransmissions is assigned to each H-ARQ process based on a QoS requirement of a higher layer data flow mapped to the H-ARQ process. 3. The method of claim 1, wherein, if the QoS requirements of the upper layer data flow are not similar, each of the upper layer data flows is associated with an H-ARQ process associated with a channel quality that best matches a QoS requirement of the upper layer data flow Mapped. ≪ / RTI > 2. The method of claim 1, wherein if the QoS requirements of the higher layer data flow are not similar, a maximum number of retransmissions is assigned to the H-ARQ process based on a QoS requirement of a higher layer data flow mapped to the H-ARQ process In, multiple transmission block transmission method. 3. The method of claim 1, wherein the physical resource mapped to the H-ARQ process for retransmission of the TB when transmission of the TB fails fails. 16. The method of claim 15, wherein the physical transmission and the H-ARQ configuration are changed for retransmission of the TB. 16. The method of claim 15, wherein the TB is fragmented for retransmission. 2. The method of claim 1, wherein in the event that the transmission of the TB fails, the physical resource mapped to the TB is changed for retransmission of the TB. 2. The method of claim 1, wherein the available physical resources and associated H-ARQ processes are determined at the beginning of a common TTI boundary. 2. The method of claim 1, wherein the physical transmission parameter comprises an MCS for each TB. 21. The method of claim 20, wherein the MCS for each TB is selected to distinguish QoS requirements of the TBs. 21. The method of claim 20, wherein the MCS for each TB is selected such that the supported QoS across each of the H-ARQ processes is similar. 2. The method of claim 1, wherein the physical transmission parameters comprise a transport block size for each TB. 24. The method of claim 23, wherein the TB size for each TB is selected to distinguish the QoS requirements of the TBs. 24. The method of claim 23, wherein the TB size for each TB is selected such that the supported QoS across each of the H-ARQ processes is similar. The method of claim 1,
And transmitting TBs simultaneously through at least two H-ARQ processes in the TTI. The method of claim 26,
And the subcarriers are distributed subcarriers. The method of claim 26,
And the subcarriers are localized subcarriers. An apparatus for transmitting multiple TBs during a transmission time interval (TTI), the apparatus comprising:
A plurality of hybrid automatic repeat request (H-ARQ) processes;
Identifying at least two sets of available physical resources, each set of physical resources having a different frequency subcarrier, each set of physical resources being associated with different H-ARQ processes, and Configured to map at least one higher layer data flow to at least two H-ARQ processes based on channel quality of each of the sets and quality of quality of service (QoS) requirements of the higher layer data flows. Controller;
At least two multiplexing and link adaptation processors, each multiplexing and link adaptation processor associated with at least one of the at least two H-ARQ processes, multiplexed into a transport block and into the associated H-ARQ process; H-ARQ configurations and transmission parameters for an associated H-ARQ process to support the Quality of Service (QoS) requirements of the higher layer data flow provided, wherein the physical transmission parameters are modulated and coding at least two multiplexing and link adaptation processors configured to determine; And
A transmitter configured to transmit TBs associated with at least two H-ARQ processes in the TTI,
Each multiplexing and link adaptation processor multiplexes at least one higher layer data flow into a TB according to the physical transmission parameters and the H-ARQ configurations of an associated H-ARQ process, and in response to and determining the determined physical transmission parameters. And process each TB correspondingly on subcarriers of the set of physical resources associated with the H-ARQ process of the block. 30. The apparatus of claim 29, wherein each multiplexing and link adaptation process determines a transport format combination (TFC) for the mapped upper layer data flow. 30. The apparatus of claim 29, wherein the controller identifies the available physical resources based on an independent spatial data stream generated by multiple antennas for multiple-input multiple-output (MIMO). 30. The apparatus of claim 29, wherein the controller identifies the available physical resources based on an independent channelization code. 30. The apparatus of claim 29, wherein the available physical resources are identified based on different time slots. 30. The apparatus of claim 29, wherein the combination of the physical resource and the H-ARQ process is dynamically determined. 30. The apparatus of claim 29, wherein the combination of the physical resource and the H-ARQ process is statically configured. 30. The apparatus of claim 29, wherein the controller is configured to select at least one higher layer data flow to be transmitted during the next TTI and to map only the selected higher layer data flow to the H-ARQ process. . 37. The apparatus of claim 36, wherein packets on the upper layer data flow are assigned lifetime, and the controller selects packets for transmission based on the lifetime. 30. The method of claim 29, wherein if the QoS requirements of the higher layer data are not similar, the controller maps the higher layer data to an H-ARQ process associated with a channel quality that best matches a QoS requirement of the higher layer data Gt; transmission block. ≪ / RTI > 30. The method of claim 29, wherein if the QoS requirements of the higher layer data are not similar, the controller assigns a maximum retransmission limit to the H-ARQ process based on QoS requirements of the higher layer data mapped to the H-ARQ process The transmission block transmitting device. 30. The apparatus of claim 29, wherein when the transmission of a TB fails, the controller allocates the same physical resources for retransmission of the TB. 41. The apparatus of claim 40, wherein the controller changes physical transmission and H-ARQ configuration for retransmission of the TB. 41. The apparatus of claim 40, wherein the controller fragmentizes the TB for retransmission. 30. The apparatus of claim 29, wherein when the transmission of a TB fails, the controller changes physical resources for retransmission of the TB. 30. The apparatus of claim 29, wherein the available physical resources and associated H-ARQ processes are determined at the beginning of a common TTI boundary. 30. The apparatus of claim 29, wherein the physical transmission parameter comprises an MCS for each TB. 46. The apparatus of claim 45, wherein the MCS for each TB is selected to distinguish the QoS requirements of the TBs. 46. The apparatus of claim 45, wherein the MCS for each TB is selected such that the supported QoS across each of the H-ARQ processes is similar. 30. The apparatus of claim 29, wherein the physical transmission parameters comprise a transport block size for each TB. 49. The apparatus of claim 48, wherein the TB size for each TB is selected to distinguish the QoS requirements of the TB. 49. The apparatus of claim 48, wherein the TB size for each TB is selected such that the supported QoS across each of the H-ARQ processes is similar. 30. The method of claim 29,
And the controller identifies the available physical resources based on independent subcarriers. 52. The method of claim 51,
And the transmitter is configured to transmit the TBs associated with the at least two H-ARQ processes simultaneously in the TTI. 52. The method of claim 51,
And the subcarriers are distributed subcarriers. 52. The method of claim 51,
And the subcarriers are localized subcarriers. 30. The method of claim 29,
If the QoS requirements of higher layer data flows are similar, then the controller determines physical transport and H-ARQ configurations to normalize QoS across the available H-ARQ processes. Device. 56. The method of claim 55,
Wherein the controller is configured to apply a higher order MCS to an H-ARQ process with a higher channel quality and a lower order MCS to an H-ARQ process with a lower channel quality. 56. The method of claim 55,
And the controller assigns a maximum retransmission limit to each H-ARQ process based on the QoS requirement of the upper layer data mapped to the H-ARQ process. A method implemented in Node-B for transmitting multiple transport blocks (TBs) during a transmission time interval (TTI),
Identifying at least two sets of available physical resources, each set of physical resources having a different frequency subcarrier, each set of physical resources being hybrid automatic repeat request (H-ARQ) processes Identifying physical resources, associated with the;
Obtaining channel quality measurements for each set of physical resources;
Mapping at least one higher layer data flow to at least two H-ARQ processes;
For each set of available physical resources and associated H-ARQ process, to support the Quality of Service (QoS) requirements of the upper layer data flow multiplexed into the transport blocks and provided to each H-ARQ process. Receiving physical transmission parameters, the physical transmission parameters including a modulation and coding scheme (MCS) and H-ARQ configurations;
Multiplex the at least one higher layer data flow into TBs according to each set of available physical resources and the physical transmission parameters of the associated H-ARQ process and the H-ARQ configurations, and to the determined physical transmission parameters. In response and processing each TB on a subcarrier of the set of physical resources associated with the H-ARQ process of the transport block; And
Transmitting TBs through at least two H-ARQ processes in the TTI. 59. The method of claim 58, wherein the physical transmission parameters and H-ARQ configurations comprise a transport format combination (TFC) for each TB. 59. The method of claim 58, wherein the communication nodes include multiple antennas for multiple-input multiple-output (MIMO), and wherein the available physical resources are identified based on independent spatial data streams. Transmission block transmission method. 59. The method of claim 58, wherein the available physical resources are identified based on independent channelization codes. 59. The method of claim 58, wherein the available physical resources are identified based on different time slots. 59. The method of claim 58, wherein the combination of the physical resource and the H-ARQ process is dynamically determined. 59. The method of claim 58, wherein the combination of the physical resource and the H-ARQ process is semi-static. 59. The method of claim 58,
Selecting a higher layer data flow to be transmitted during a next TTI, wherein only selected higher layer data flows are mapped to the H-ARQ process. 66. The method of claim 65,
Packets in each higher layer data flow are assigned a lifetime.
Wherein the selection of a packet for transmission is made based on the life time. 59. The method of claim 58, wherein if the QoS requirements of the upper layer data flow are similar, then the physical transport and H-ARQ configuration is determined such that QoS across the available H-ARQ processes is similar. Way. 68. The method of claim 67, wherein the higher order MCS is applied to an H-ARQ process with higher channel quality and the lower order MCS is applied to an H-ARQ process with lower channel quality. 68. The method of claim 67, wherein a maximum number of retransmissions is assigned to each H-ARQ process based on a QoS requirement of a higher layer data flow mapped to the H-ARQ process. 59. The method of claim 58, wherein if the QoS requirements of the upper layer data flow are not similar, then each of the upper layer data flows is associated with an H-ARQ process associated with a channel quality that best matches a QoS requirement of the upper layer data flow Mapped. ≪ / RTI > 59. The method of claim 58, wherein if the QoS requirements of the upper layer data flow are not similar, a maximum number of retransmissions is assigned to the H-ARQ process based on a QoS requirement of an upper layer data flow mapped to the H-ARQ process In, multiple transmission block transmission method. 59. The method of claim 58, wherein the physical resource mapped to the H-ARQ process for retransmission of the TB when transmission of the TB fails is unchanged. 73. The method of claim 72, wherein the physical transmission and the H-ARQ configuration are changed for retransmission of the TB. 73. The method of claim 72, wherein the TB is fragmented for retransmission. 59. The method of claim 58, wherein if the transmission of the TB fails, the physical resource mapped to the TB is changed for retransmission of the TB. 59. The method of claim 58, wherein the available physical resources and associated H-ARQ processes are determined at the beginning of a common TTI boundary. 59. The method of claim 58, wherein the physical transmission parameter comprises an MCS for each TB. 78. The method of claim 77, wherein the MCS for each TB is selected to distinguish the QoS requirements of the TBs. 79. The method of claim 77, wherein the MCS for each TB is selected such that the supported QoS across each of the H-ARQ processes is similar. 59. The method of claim 58, wherein the physical transmission parameters comprise a transport block size for each TB. 79. The method of claim 80, wherein the TB size for each TB is selected to distinguish the QoS requirements of the TBs. 79. The method of claim 80, wherein the TB size for each TB is selected such that the supported QoS across each of the H-ARQ processes is similar. 59. The method of claim 58,
And transmitting TBs simultaneously through at least two H-ARQ processes in the TTI. 85. The method of claim 83,
And the subcarriers are distributed subcarriers. 85. The method of claim 83,
And the subcarriers are localized subcarriers.

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