WO2017136592A1

WO2017136592A1 - Resource allocation in low-latency wireless systems

Info

Publication number: WO2017136592A1
Application number: PCT/US2017/016280
Authority: WO
Inventors: Hong He; Seunghee Han; Alexei Davydov; Christian Ibars Casas; Gang Xiong
Original assignee: Intel IP Corporation
Priority date: 2016-02-02
Filing date: 2017-02-02
Publication date: 2017-08-10
Also published as: EP3412091A1

Abstract

Described is an apparatus of an Evolved Node-B (eNB) operable to communicate with a User Equipment (UE) on a wireless network. The apparatus may comprise a first circuitry, a second circuitry, and a third circuitry. The first circuitry may be operable to establish a time-domain bundling window spanning an initial Short Transmission Time Interval (S-TTI) and one or more subsequent S-TTIs. The second circuitry may be operable to generate a first Downlink Control Information (DCI) carried by a first Downlink (DL) control region of the time-domain bundling window, and to generate a second DCI carried by a second DL control region of the time-domain bundling window. The third circuitry may be operable to determine resources scheduled for data transmission in one of the subsequent S- TTIs based upon scheduling information in the first DCI and scheduling information in the second DCI.

Description

RESOURCE ALLOCATION IN LOW-LATENCY WIRELESS SYSTEMS

CLAIM OF PRIORITY

[0001] The present application claims priority under 35 U.S.C. § 119(e) to United

States Provisional Patent Application Serial Number 62/290,281 filed February 2, 2016 and entitled "Resource Allocation In A Low Latency Wireless System," which is herein incorporated by reference in its entirety.

BACKGROUND

[0002] A variety of wireless cellular communication systems have been implemented, including a 3rd Generation Partnership Project (3 GPP) Universal Mobile

Telecommunications System, a 3GPP Long-Term Evolution (LTE) system, and a 3GPP LTE- Advanced (LTE-A) system. Next-generation wireless cellular communication systems based upon LTE and LTE-A systems are being developed, such as a fifth generation (5G) wireless system / 5G mobile networks system.

[0003] In various wireless cellular communication systems, packet data latency may be a key performance metric. Packet data latency may in turn be impacted by Transmission Time Interval (TTI) length.

BRIEF DESCRIPTION OF THE DRAWINGS

[0004] The embodiments of the disclosure will be understood more fully from the detailed description given below and from the accompanying drawings of various embodiments of the disclosure. However, while the drawings are to aid in explanation and understanding, they are only an aid, and should not be taken to limit the disclosure to the specific embodiments depicted therein.

[0005] Fig. 1 illustrates a Downlink (DL) frame structure supporting Short

Transmission Time Intervals (S-TTIs), in accordance with some embodiments of the disclosure.

[0006] Fig. 2 illustrates Type-1 and Downlink Control Information (DCI) format transmission and Type-2 DCI format transmission, in accordance with some embodiments of the disclosure.

l [0007] Fig. 3 illustrates a Time Division Multiplexing (TDM) resource allocation scheme for Shortened Physical Downlink Shared Channel (S-PDSCH), in accordance with some embodiments of the disclosure.

[0008] Figs. 4A-4B illustrate a resource allocation scheme for S-PDSCH, in accordance with some embodiments of the disclosure.

[0009] Fig. 5 illustrates a Shortened Physical Downlink Control Channel (S-PDCCH) multiplexing structure, in accordance with some embodiments of the disclosure.

[0010] Fig. 6 illustrates multiple S-TTI scheduling in a time-domain bundling window, in accordance with some embodiments of the disclosure.

[0011] Fig. 7 illustrates an Evolved Node B (eNB) and a User Equipment (UE), in accordance with some embodiments of the disclosure.

[0012] Fig. 8 illustrates hardware processing circuitries for an eNB for resource allocation in low latency wireless systems, in accordance with some embodiments of the disclosure.

[0013] Fig. 9 illustrates hardware processing circuitries for a UE for resource allocation in low latency wireless systems, in accordance with some embodiments of the disclosure.

[0014] Fig. 10 illustrates methods for an eNB for resource allocation in low latency wireless systems, in accordance with some embodiments of the disclosure.

[0015] Fig. 11 illustrates methods for a UE for resource allocation in low latency wireless systems, in accordance with some embodiments of the disclosure.

[0016] Fig. 12 illustrates example components of a UE device, in accordance with some embodiments of the disclosure.

DETAILED DESCRIPTION

[0017] Various wireless cellular communication systems have been implemented or are being proposed, including a 3rd Generation Partnership Project (3GPP) Universal Mobile Telecommunications System (UMTS) system, a 3GPP Long-Term Evolution (LTE) system, a 3GPP LTE-Advanced system, and a 5th Generation wireless system / 5th Generation mobile networks (5G) system / 5th Generation new radio (NR) system. Packet data latency may be an important performance metric for wireless cellular communication systems.

[0018] Packet data latency may be important for a perceived responsiveness of a system. Packet data latency may also be an important influence on throughput. The use of Hypertext Transfer Protocol (HTTP) and Transmission Control Protocol (TCP) HTTP/TCP are dominant on the internet. A typical size of an HTTP-based transaction over the internet may be in the range of a few tens of kilobytes (kB) to one megabyte (MB). In this size range, a TCP slow start period may be a significant part of a total transport period of a packet stream.

[0019] In legacy LTE systems, a fixed TTI length of 1 ms with 12 or 14 symbols has been introduced, balancing a tradeoff between signaling overhead and efficiency. The transmission of a request, a grant, or data may be done in subframe chunks corresponding with TTIs. A TTI length may have an impact both on a time for transmitting over the wireless medium (e.g., over air) and on processing time in transmitter and receivers. A packet latency may be reduced by reducing a transport time of data and control, which may in turn be done by shortening a TTI length.

[0020] Disclosed herein are various mechanisms and methods for supporting efficient resource allocation in low-latency wireless systems. In some embodiments, a frame structure may support one or more Shortened TTIs (S-TTIs) within a TTI. Various channels may be transmitted within an S-TTI, such as a Shortened Physical Downlink Control Channel (S- PDCCH), a Shortened Physical Downlink Shared Channel (S-PDSCH), and a Shortened Physical Uplink Shared Channel (S-PUSCH).

[0021] In some embodiments, time-domain bundling-window-based joint resource allocation for S-PDSH scheduling may utilize a first DCI format and a second DCI format transmitted in different control regions and/or at different rates. In some embodiments, a legacy control region may be employed. Various embodiments may employ various schemes for resource allocation for S-PDSCH and/or S-PUSCH. In some embodiments, Resource Block (RB) based S-PDCCH structures and search space design may reduce DCI format size and/or may minimize a number of blind decoding attempts.

[0022] In the following description, numerous details are discussed to provide a more thorough explanation of embodiments of the present disclosure. It will be apparent to one skilled in the art, however, that embodiments of the present disclosure may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form, rather than in detail, in order to avoid obscuring embodiments of the present disclosure.

[0023] Note that in the corresponding drawings of the embodiments, signals are represented with lines. Some lines may be thicker, to indicate a greater number of constituent signal paths, and/or have arrows at one or more ends, to indicate a direction of information flow. Such indications are not intended to be limiting. Rather, the lines are used in connection with one or more exemplary embodiments to facilitate easier understanding of a circuit or a logical unit. Any represented signal, as dictated by design needs or preferences, may actually comprise one or more signals that may travel in either direction and may be implemented with any suitable type of signal scheme.

[0024] Throughout the specification, and in the claims, the term "connected" means a direct electrical, mechanical, or magnetic connection between the things that are connected, without any intermediary devices. The term "coupled" means either a direct electrical, mechanical, or magnetic connection between the things that are connected or an indirect connection through one or more passive or active intermediary devices. The term "circuit" or "module" may refer to one or more passive and/or active components that are arranged to cooperate with one another to provide a desired function. The term "signal" may refer to at least one current signal, voltage signal, magnetic signal, or data/clock signal. The meaning of "a," "an," and "the" include plural references. The meaning of "in" includes "in" and "on."

[0025] The terms "substantially," "close," "approximately," "near," and "about" generally refer to being within +/- 10% of a target value. Unless otherwise specified the use of the ordinal adjectives "first," "second," and "third," etc., to describe a common object, merely indicate that different instances of like objects are being referred to, and are not intended to imply that the objects so described must be in a given sequence, either temporally, spatially, in ranking, or in any other manner.

[0026] It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in other orientations than those illustrated or otherwise described herein.

[0027] The terms "left," "right," "front," "back," "top," "bottom," "over," "under," and the like in the description and in the claims, if any, are used for descriptive purposes and not necessarily for describing permanent relative positions.

[0028] For purposes of the embodiments, the transistors in various circuits, modules, and logic blocks are Tunneling FETs (TFETs). Some transistors of various embodiments may comprise metal oxide semiconductor (MOS) transistors, which include drain, source, gate, and bulk terminals. The transistors may also include Tri-Gate and FinFET transistors, Gate All Around Cylindrical Transistors, Square Wire, or Rectangular Ribbon Transistors or other devices implementing transistor functionality like carbon nanotubes or spintronic devices. MOSFET symmetrical source and drain terminals i.e., are identical terminals and are interchangeably used here. A TFET device, on the other hand, has asymmetric Source and Drain terminals. Those skilled in the art will appreciate that other transistors, for example, Bi-polar junction transistors-BJT PNP/NPN, BiCMOS, CMOS, etc., may be used for some transistors without departing from the scope of the disclosure.

[0029] For the purposes of the present disclosure, the phrases "A and/or B" and "A or

B" mean (A), (B), or (A and B). For the purposes of the present disclosure, the phrase "A, B, and/or C" means (A), (B), (C), (A and B), (A and C), (B and C), or (A, B and C).

[0030] In addition, the various elements of combinatorial logic and sequential logic discussed in the present disclosure may pertain both to physical structures (such as AND gates, OR gates, or XOR gates), or to synthesized or otherwise optimized collections of devices implementing the logical structures that are Boolean equivalents of the logic under discussion.

[0031] In addition, for purposes of the present disclosure, the term "eNB" may refer to a legacy eNB, a next-generation or 5G eNB, an AP, and/or another base station for a wireless communication system. For purposes of the present disclosure, the term "UE" may refer to a legacy UE, a next-generation or 5G UE, an STA, and/or another mobile equipment for a wireless communication system.

[0032] Various embodiments of eNBs and/or UEs discussed below may process one or more transmissions of various types. Some processing of a transmission may comprise demodulating, decoding, detecting, parsing, and/or otherwise handling a transmission that has been received. In some embodiments, an eNB or UE processing a transmission may determine or recognize the transmission's type and/or a condition associated with the transmission. For some embodiments, an eNB or UE processing a transmission may act in accordance with the transmission's type, and/or may act conditionally based upon the transmission's type. An eNB or UE processing a transmission may also recognize one or more values or fields of data carried by the transmission. Processing a transmission may comprise moving the transmission through one or more layers of a protocol stack (which may be implemented in, e.g., hardware and/or software-configured elements), such as by moving a transmission that has been received by an eNB or a UE through one or more layers of a protocol stack.

[0033] Various embodiments of eNBs and/or UEs discussed below may also generate one or more transmissions of various types. Some generating of a transmission may comprise modulating, encoding, formatting, assembling, and/or otherwise handling a transmission that is to be transmitted. In some embodiments, an eNB or UE generating a transmission may establish the transmission's type and/or a condition associated with the transmission. For some embodiments, an eNB or UE generating a transmission may act in accordance with the transmission's type, and/or may act conditionally based upon the transmission's type. An eNB or UE generating a transmission may also determine one or more values or fields of data carried by the transmission. Generating a transmission may comprise moving the transmission through one or more layers of a protocol stack (which may be implemented in, e.g., hardware and/or software-configured elements), such as by moving a transmission to be sent by an eNB or a UE through one or more layers of a protocol stack.

[0034] Fig. 1 illustrates a Downlink (DL) frame structure supporting S-TTIs, in accordance with some embodiments of the disclosure. A frame structure 100 may comprise a first S-TTI 110, a second S-TTI 120, a third S-TTI 130, a fourth S-TTI 140, a fifth S-TTI 150, a sixth S-TTI 160, and a seventh S-TTI 170. S-TTIs 110, 120, 130, 140, 150, 160, and 170 may span a subframe (e.g., a 1 millisecond (ms) subframe), which may in turn comprise two slots and fourteen symbols (e.g., Orthogonal Frequency Division Multiplexing (OFDM) symbols).

[0035] The fourteen symbols of frame structure 100 may be partitioned into seven equally-sized S-TTIs. S-TTIs 110, 120, 130, 140, 150, 160, and/or 170 may accordingly span two symbols. In some embodiments, S-TTIs 120, 130, 140, 150, 160, and/or 170 may support one or more UEs (e.g., a UE 1 through a UE 6) which may be reserved for S-TTI operation. In various embodiments, some portion of the symbols within a TTI may be divided into S-TTI spanning other than two symbols (e.g., S-TTI spanning three symbols or four symbols). In addition, in various embodiments, an initial S-TTI within a TTI may span a different number of symbols than subsequent S-TTIs within the TTI.

[0036] A Physical Downlink Control Channel (PDCCH) transmitted in an S-TTI may be referred to as a Shortened PDCCH (S-PDCCH). A Physical Downlink Shared Channel (PDSCH) transmitted in an S-TTI may be referred to as a Shortened PDSCH (S-PDSCH). A Physical Uplink Shared Channel (PUSCH) transmitted in an S-TTI may be referred to as a Shortened PUSCH (S-PUSCH). In some embodiments, to aid in backward compatibility, a Physical Downlink Control Channel (PDCCH) may be transmitted within an initial S-TTI (e.g., within the first symbols) and may schedule Physical Downlink Shared Channel (PDSCH) for legacy UEs.

[0037] In some embodiments, more than one S-PDSCH for different UEs may be transmitted in the same S-TTI. For example, an initial UE-1 S-PDSCH 122 and an initial UE-2 S-PDSCH 124 may be transmitted in second S-TTI 120. For some embodiments, more than one S-PDSCH for the same UE may be transmitted in different S-TTIs (e.g., within one TTI). For example, initial UE-1 S-PDSCH 122 may be transmitted in second S-TTI 120, and subsequent UE-1 S-PDSCH 152 may be transmitted in fifth S-TTI 150.

[0038] S-TTIs may advantageously provide reduced latency, but may also reduce a number of available Resource Elements (REs) within an RB. As depicted in Fig. 1, for example, S-TTIs 110, 120, 130, 140, 150, 160, and/or 170 may span a plurality of RBs across the frequency domain, each of which may comprise 24 REs across a symbol 0 and a symbol 1 of the RB. For example, seventh S-TTI 170 may span a plurality of RBs including an RB 174, which may in turn comprise 24 REs. In contrast, a legacy LTE TTI may span an RB comprising 168 REs.

[0039] In comparison with a legacy LTE TTI RB, an S-TTI RB may span a reduced number of REs. Resource allocation for S-TTIs (e.g., allocation for S-PDSCH and/or S- PUSCH based on S-PDCCH) may balance control-signal overhead, while still providing scheduling flexibility for different transmissions within an S-TTI.

[0040] Fig. 2 illustrates Type-1 and Downlink Control Information (DCI) format transmission and Type-2 DCI format transmission, in accordance with some embodiments of the disclosure. A frame structure 200 may comprise a time-domain bundling window 205 of size N. Bundling window 205 may comprise a plurality of S-TTIs (which may be numbered from 1 to N). In some embodiments, bundling window 205 may encompass a legacy control region in a first S-TTI 210, a first resource allocation 222 in a second S-TTI 220, a second resource allocation 232 in a third S-TTI 230, a third resource allocation 242 in a fourth S-TTI 240, and a last resource allocation 292 (resource allocation number N-l) in an Nth S-TTI 290. Various resource allocations may allocate resources for S-PDSCH, for example.

[0041] Bundling window 205 may comprise a Type-1 DCI format 212 (which may be of a first DCI format) in first S-TTI 210. Bundling window 205 may also comprise one or more Type-2 DCI formats (which may be of a second DCI format) in first S-TTI 210 and/or subsequent S-TTIs. For example, bundling window 205 may comprise a first Type-2 DCI format 214 in first S-TTI 210, a second Type-2 DCI format 234 in third S-TTI 230, a third Type-2 DCI format 244 in fourth S-TTI 240, and a last Type-2 DCI format 294 (Type-2 DCI format number N-l) in Nth S-TTI 290. Accordingly, bundling window 205 may enable Type-1 resource allocation and/or Type-2 resource allocation in various S-TTIs.

[0042] In various embodiments, in order to limit payload sizes of DCI formats transmitted on S-PDCCH, Type-1 scheduling information and Type-2 scheduling information may be transmitted to jointly schedule resources in various S-TTIs within bundling window 205. Type-1 scheduling information may be provided by a Type-1 DCI format, and Type-2 scheduling information may be provided by a Type-2 DCI format.

[0043] Type-1 scheduling information may include fields carrying Modulation and

Coding Scheme (MCS) information and/or Basic Resource Block Assignment (B-RA) information. The MCS information field may support fewer MCS schemes (e.g., 3 bits or 4 bits) than a legacy LTE system. Supported MCS schemes may comprise Quadrature Phase- Shift Keying (QPSK), 16 Quadrature Amplitude Modulation (QAM), 64 QAM, 256 QAM, or a subset thereof with a limited set of possible coding rates. The B-RA information field may contain resource allocation for the transmission of S-PDCCH and corresponding S-PDSCH.

[0044] Type-2 scheduling information may include fields carrying Hybrid Automatic

Repeat Request (HARQ) information, Downlink Assignment Index (DAI) information (for DL), new data indicator information (for either Uplink (UL) or DL), Channel Quality Indicator (CQI) request information (for UL), cyclic shift for Demodulation Reference Signal (DMRS) information (for UL), and/or Additional Resource Block Assignment (A-RA) information (which may be optionally present).

[0045] In order to minimize payload sizes for Type-2 scheduling information, a

Transmit Power Control (TPC) command for PUCCH (in DL instances) or a TPC command for scheduled PUSCH (in UL instances) for an S-TTI may be transmitted as part of the Type- 1 scheduling information. This may provide a power-control granularity similar to that of a legacy LTE system (e.g., as often as once every TTI, or once every 1 ms). Alternatively, such TPC commands may be transmitted as part of the Type-2 scheduling information. This may advantageously enable a finer granularity (e.g., as often as once every S-TTI).

[0046] Note that in a Type-1 DCI format, B-RA may be used to indicate a resource allocation of S-PDSCH transmission, while the search space for the transmission of a Type-2 DCI format may be contained within the resources allocated for S-PDSCH transmission. In some embodiments, multiple Type-2 DCI formats may be transmitted within one time- domain bundling window.

[0047] For some embodiments, a frequency hopping pattern may be defined for the transmission of Type-2 DCI formats to improve a link budget and/or randomize an inter-cell interference. In one example, a frequency hopping pattern may be defined as a function of a physical cell ID and/or a virtual cell ID and/or an S-TTI index.

[0048] In some embodiments, a B-RA field in a Type-1 DCI format may indicate a resource allocation of S-PDSCH transmission in a first S-TTI, while resource allocations of the S-PDSCH transmissions in the subsequent S-TTIs within a time-domain bundling window (e.g., bundling window 205) may be derived from the resource allocation in the first S-TTI according to a predefined frequency hopping rule. For some embodiments, a frequency hopping partem may be defined as a function of a physical cell ID and/or a virtual cell ID and/or an S-TTI index. In some embodiments, a resource allocation for transmission of a Type-2 DCI format may be contained within a resource for S-PDSCH transmission. Further, the resource may be predefined, or may be configured by higher layers in a semi- statically manner.

[0049] The sizes of a Type-1 DCI format and a Type-2 DCI format may differ. In some embodiments, a shorter Cyclic Redundancy Check (CRC) may be appended to a Type- 1 DCI format and/or to a Type-2 DCI format, due to a relatively smaller number of bits compared to a legacy DCI format. For example, a 16-bit CRC may be used for a legacy DCI format to facilitate error detection. To reduce a relative CRC overhead, a shorter CRC may be added to a Type-1 DCI format and/or a Type-2 DCI format. In one example, an 8-bit CRC may be added.

[0050] A size of time-domain bundling window 205 may be predetermined (e.g., fixed by specification), semi-statically configured by Radio Resource Control (RRC), and/or dynamically indicated via PDCCH on legacy control region 210. In one design, the time- domain bundling window size may be fixed to be 1 ms (e.g., a TTI length similar to a TTI length of a legacy LTE system), which may facilitate use of legacy control region 210 to transmit Type-1 DCI format 212.

[0051] In some embodiments, Type-1 scheduling information may be transmitted in a

UE-specific Search Space (USS) or in a Common Search Space (CSS) on a legacy PDCCH using Type-1 DCI format 212 on a relatively slow basis. In order to avoid increasing a number of blind decodes performed by a UE on the legacy control region, a size of Type-1 DCI format may be similar to a size of a legacy DCI format (e.g., a DCI format 1C, or a DCI format 1A). In addition, Type-2 scheduling information using Type-2 DCI formats may be transmitted in each S-TTI.

[0052] Accordingly, in time-domain bundling window 205, Type-1 DCI format 212 may be transmitted only once, while Type-2 DCI formats may be transmitted a number of times. Note that the number of transmission instances for Type-2 DCI format may be indicated in Type-1 DCI format 212. It is also possible that B-RA information might not be included in Type-1 DCI format 212. Instead, B-RA information may be provided semi- statically through higher layers (e.g., through RRC messaging) according to an interference co-ordination technique for minimizing interference between adjacent cells. [0053] In various embodiment, a variety of schemes may be used to signal MCS information for S-PDSCH in an S-TTI. In some schemes, MCS information for all resource allocations within bundling window 205 may be transmitted in Type-1 DCI format 212 in legacy control region 210. For some embodiments, one or more MCS offset value with respect to some reference MCS value (e.g., an MCS value indicated in a Type-1 DCI format or in earlier S-TTIs) may be transmitted in the various Type-2 DCI formats within bundling window 205.

[0054] In general, an MCS_n in an S-TTI number n within a time-domain bundling window k may be given by either of

[0055] MCS* = CS«_asic + A_M ^k _CSin ; or

[0056] MCS* = MCS^ + A_M ^k _CSi7l

[0057] Where:

[0058] MCS may denote an MCS value used for S-PDSCH in S-TTI number n of a time-domain bundling window k;

[0059] ^Mcs.n ^may ^De determined from an MCS offset field in a Type-2 DCI format in S-TTI number n of the time-domain bundling window k (e.g., the 2-bit A _{CS n} given in Table 1); and

[0060]

may denote an MCS value indicated in a Type-1 DCI format of a time-domain bundling window k.

Table 1: MCS offset Value for MCS determination in an S-TTI.

[0061] Various embodiments are depicted herein as using Type-1 DCI formats and

Type-2 DCI formats to jointly indicate resource allocation for S-PDSCH transmissions in each S-TTI within a time-domain bundling window 205. It should be appreciated that in various embodiments, the concepts described and depicted herein are also applicable to S- PUSCH transmissions (and/or other transmissions) in an S-TTI.

[0062] Fig. 3 illustrates a Time Division Multiplexing (TDM) resource allocation scheme for Shortened Physical Downlink Shared Channel (S-PDSCH), in accordance with some embodiments of the disclosure. A frame structure 300 may comprise a time-domain bundling window 305, which may in turn comprise a plurality of S-TTIs (which may be numbered from 1 to N). In some embodiments, bundling window 305 may comprise a legacy control region in a first S-TTI 310, a first resource allocation 322 in a second S-TTI, a second resource allocation 232 in a third S-TTI, a third resource allocation 342 in a fourth S-TTI, a fourth resource allocation 352 in a fifth S-TTI, a second-to-last resource allocation 382 (resource allocation number N-2) in an N-1 S-TTI, and a last resource allocation 392 (resource allocation number N-1) in an Nth S-TTI. Various resource allocations may allocate resources for S-PDSCH, for example.

[0063] An S-TTI frequency region 307 may span one or more S-TTIs and may span a number of RBs. In some embodiments, S-TTI frequency region 307 may span various resource allocations within the S-TTIs of bundling window 305 (e.g., first resource allocation 322, second resource allocation 332, third resource allocation 342, fourth resource allocation 352, second-to-last resource allocation 382, and/or last resource allocation 392).

[0064] S-TTI frequency region 307 may be indicated by a value of a B-RA field in a

Type-1 DCI format 312 in the legacy control region in first S-TTI 310. In some

embodiments, an A-RA field might not be present in a Type-2 DCI format to limit a Type-2 DCI format size. In each of resource allocations 322, 332 342, 352, 382, and/or 392, one Type-2 DCI format may be transmitted for a single UE, which may be identified by its unique Cell Radio Network Temporary Identifier (C-RNTI) to utilize all resources in a single S-TTI (e.g., all resources available within S-TTI frequency region 307 in a single S-TTI). In some such embodiments, a size of a Type-2 DCI format may advantageously be rather small due a lack of resource allocation information in frequency, although in some such embodiments a single S-TTI may merely schedule a single UE.

[0065] For example, a first Type-2 DCI format 314 may be transmitted in first S-TTI

310 for first resource allocation 322, a second Type-2 DCI format 334 may be transmitted in the third S-TTI for second resource allocation 332, a third Type-2 DCI format 344 may be transmitted in the fourth S-TTI for third resource allocation 342, a fourth Type-2 DCI format 354 may be transmitted in the fifth S-TTI for fourth resource allocation 352, a second-to-last Type-2 DCI format 384 may be transmitted in the N-1 S-TTI for second-to-last resource allocation 382, and a last Type-2 DCI format 394 may be transmitted in the Nth S-TTI for last resource allocation 392.

[0066] Figs. 4A-4B illustrate a resource allocation scheme for S-PDSCH, in accordance with some embodiments of the disclosure. A frame structure 400 may comprise a time-domain bundling window 405, which may in turn comprise a plurality of S-TTIs (which may be numbered from 1 to N). In some embodiments, bundling window 405 may comprise a legacy control region in a first S-TTI 410, a first resource allocation 422 in a second S-TTI, a second resource allocation 432 in a third S-TTI, a third resource allocation 442 in a fourth S-TTI, a fourth resource allocation 452 in a fifth S-TTI, a second-to-last resource allocation 482 (resource allocation number N-2) in an N-1 S-TTI and a last resource allocation 492 (resource allocation number N-1) in an Nth S-TTI. Various resource allocations may allocate resources for S-PDSCH, for example.

[0067] An S-TTI frequency region 407 may span one or more S-TTIs and may span a number of RBs. In some embodiments, S-TTI frequency region 407 may span various resource allocations within the S-TTIs of bundling window 405 (e.g., first resource allocation 422, second resource allocation 432, third resource allocation 442, fourth resource allocation 452, second-to-last resource allocation 482, and/or last resource allocation 492). S-TTI frequency region 407 may be indicated by a value of a B-RA field in a Type-1 DCI format 412 in the legacy control region in first S-TTI 410.

[0068] With reference to Fig. 4B, last resource allocation 492 may comprise an RBG

1 through an RBG N-2 and an RBG N-1. For some embodiments, last resource allocation 492 may be indicated by Type-1 DCI format 412 for bundling window 405. In some embodiments, an A-RA field in a Type-2 DCI format may be employed in order to allow multiple UEs to be scheduled in an S-TTI. In general, a set of RBs in S-TTI frequency region 407 may be dynamically indicated by Type-1 DCI format 412 in legacy control region 410 of bundling window 405. Additionally, A-RA fields in Type-2 DCI formats may be used in one or more S-TTI within bundling window 405 to indicate the resource for each individual UE within the set of RBs in S-TTI frequency region 407.

[0069] In some embodiments, A-RA information of a Type-2 DCI format may include a bitmap indicating one or more Resource Block Groups (RBGs) within S-TTI frequency region 407 that may be allocated to a scheduled UE (for example, RBG 1 through RBG N-2 and RBG N-1 of last resource allocation 492). An RBG may be a set of consecutive physical RBs over S-TTI symbols. For some embodiments, the RBG size may be determined at least partially on a number of symbols in an S-TTI, which may

advantageously save control signaling overhead.

[0070] For some embodiments, A-RA information of a Type-2 DCI format may be used to indicate a number M of consecutive RBs in frequency for an S-PDSCH 495 for a UE. In some embodiments, M may be indicated by an A-RA field in a Type-2 DCI format for an S-TTI. In some embodiments, a starting RB for an S-PDSCH 495 may be implicitly indicated by a lowest RB of an S-PDCCH 494 that is used for scheduling S-PDSCH 495. For some embodiments, S-PDCCH 494 may be a localized transmission based on DMRS. A lowest RB for S-PDSCH 495 may be same as a lowest RB of associated S-PDCCH 494, assuming Time Division Multiplexing (TDM), or Frequency Division Multiplexing (FDM), or a combination of TDM and FDM is used to multiplex S-PDCCH 494 and S-PDSCH 495. Data transmission rate-matching around detected S-PDCCH 494 may be used when S- PDSCH 495 REs are overlapped with associated S-PDCCH 494.

[0071] In some embodiments, a set of RB resources may be semi-statically pre- configured by RRC signaling for a particular UE. Either Type-1 DCI format or Type-2 DCI format may then be further utilized to indicate one out of these configured RB sets for S- PDSCH or S-PUSCH transmission in an S-TTI within a bundling window. In some such embodiments, one Type DCI format may be omitted, which may advantageously save overhead.

[0072] Since Type-2 DCI format in each S-TTI may be used for data scheduling based on a common Type-1 DCI format transmitted at the start of a bundling window 405, a determination as to whether to monitor for Type-2 DCI format on an S-PDCCH search space in each S-TTI may be based on the whether a Type-1 DCI format is successfully received in legacy control region 410 of bundling window 405. For example, in some embodiments, a UE may determine not to monitor a Type-2 DCI format within bundling window 405 if no Type-1 DCI format is successfully decoded using a certain RNTI value. In another example, for some embodiments, a field in a Type-1 DCI format may be indicative of whether at least one Type-2 DCI format may be transmitted in an S-TTI of bundling window 405, which may advantageously save UE battery charge. In some embodiments, a field in a Type-1 DCI format may be used to indicate a search space for the transmission of a Type-2 DCI format. For some embodiments, a field on a Type-1 DCI format may be used to determine a resource value for the transmission of a Type-2 DCI format from one of K resource values configured by higher layers according to the mapping. Table 2 illustrates a mapping rule. Table 2. Resource value for T e-2 PCI format resource allocation

[0073] Fig. 5 illustrates a Shortened Physical Downlink Control Channel (S-PDCCH) multiplexing structure, in accordance with some embodiments of the disclosure. A resource allocation in an S-TTI may comprise a first RBG 510, a second RBG 520, and a third RBG 530. S-PDCCH may occupy a first N symbols (e.g., a first symbol, or a first two symbols) within an S-TTI, which may advantageously reduce a decoding latency for scheduled S- PDSCH.

[0074] In a case A, in one S-TTI, S-PDCCH 502 may be TDM multiplexed with S-

PDSCH 504. In a case B, in one S-TTI, S-PDCCH 502 may be FDM multiplexed with S- PDSCH 504. In a case C, in one S-TTI, S-PDCCH 502 may be TDM and FDM multiplexed with S-PDSCH 504.

[0075] An S-PDCCH structure 512 may span 12 subcarriers in 1 symbol period in one RB. S-PDCCH structure 512 may include 4 DMRS REs 516 (e.g., on subcarriers 3, 4, 8, and/or 9) with the remaining S-PDCCH REs 514 being available for Type-2 DCI format transmission. To reduce a Reference Signal (RS) overhead, DMRS 516 present in S-PDCCH structure 512 may be used for S-PDSCH decoding in the same S-TTI, or in later S-TTIs for a particular UE. For example, DMRS 516 may be utilized when S-PDSCH is close to S- PDCCH in both frequency and time. In another embodiment, S-PDCCH in an S-TTI number n and in an RB number m may be used for S-PDSCH decoding in S-TTI number n and S-TTI number n+1 and RB number m+1, where the same precoding may be used for these S- PDCCH and S-PDCCH.

[0076] An S-PDCCH candidate may be a set of RBs within an S-TTI frequency region that could potentially include an S-PDCCH transmission. To reduce a number of blind decoding attempts of S-PDCCH, a first RB of an S-PDCCH candidate for any aggregation level may be restricted to a lowest RB of one RBG. As depicted in Fig. 5, three S-PDCCH candidates may be limited to start from first RBG 510, second RBG 520, and third RBG 530, respectively. Additionally, in some embodiments, an aggregation level, and/or an S-PDCCH RB position in different S-TTIs in a time-domain bundling window, may be the same, which may advantageously further simplify UE designs for monitoring S-PDCCHs.

[0077] Fig. 6 illustrates multiple S-TTI scheduling in a time-domain bundling window, in accordance with some embodiments of the disclosure. A frame structure 600 may comprise a time-domain bundling window 605 of size N. Bundling window 605 may comprise a plurality of S-TTIs (which may be numbered from 1 to N). In some

embodiments, bundling window 605 may encompass a legacy control region in a first S-TTI 610, a first resource allocation 622 in a second S-TTI 620, a second resource allocation 632 in a third S-TTI 630, a third resource allocation 642 in a fourth S-TTI 640, and a fourth resource allocation 642 (resource allocation number N-l) in a fifth S-TTI 650. Various resource allocations may allocate resources for S-PDSCH, for example.

[0078] Bundling window 605 may comprise a Type-1 DCI format 612 (which may be of a first DCI format) in first S-TTI 210. Bundling window 605 may also comprise a Type-2 DCI format (which may be of a second DCI format) in a subsequent S-TTI. For example, bundling window 605 may comprise a first Type-2 DCI format 624 in second S-TTI 620. Accordingly, bundling window 605 may enable Type-1 resource allocation and/or Type-2 resource allocation in various S-TTIs.

[0079] Some embodiments may provide techniques to reduce control signaling overhead. For example, in some embodiments, a Type-2 DCI format transmitted in one S- TTI may be used to schedule one or more S-PDSCH in one or more other S-TTIs. In an exemplary embodiment, such multi-S-TTI scheduling may comprise second S-TTI 620, third S-TTI 630, fourth S-TTI 640, and fifth S-TTI 650, along with their corresponding resource allocations (which may be for, e.g., S-PDSCH). A-RA information of Type-2 DCI format 624 in second S-TTI 620 may include a bitmap field to indicate a number of consecutive S- TTIs for S-PDSCH reception. The bitmap length may depend on the number of S-TTIs in a time-domain bundling window.

[0080] Fig. 7 illustrates an eNB and a UE, in accordance with some embodiments of the disclosure. Fig. 7 includes block diagrams of an eNB 710 and a UE 730 which are operable to co-exist with each other and other elements of an LTE network. High-level, simplified architectures of eNB 710 and UE 730 are described so as not to obscure the embodiments. It should be noted that in some embodiments, eNB 710 may be a stationary non-mobile device. [0081] eNB 710 is coupled to one or more antennas 705, and UE 730 is similarly coupled to one or more antennas 725. However, in some embodiments, eNB 710 may incorporate or comprise antennas 705, and UE 730 in various embodiments may incorporate or comprise antennas 725.

[0082] In some embodiments, antennas 705 and/or antennas 725 may comprise one or more directional or omni-directional antennas, including monopole antennas, dipole antennas, loop antennas, patch antennas, microstrip antennas, coplanar wave antennas, or other types of antennas suitable for transmission of RF signals. In some MIMO (multiple-input and multiple output) embodiments, antennas 705 are separated to take advantage of spatial diversity.

[0083] eNB 710 and UE 730 are operable to communicate with each other on a network, such as a wireless network. eNB 710 and UE 730 may be in communication with each other over a wireless communication channel 750, which has both a downlink path from eNB 710 to UE 730 and an uplink path from UE 730 to eNB 710.

[0084] As illustrated in Fig. 7, in some embodiments, eNB 710 may include a physical layer circuitry 712, a MAC (media access control) circuitry 714, a processor 716, a memory 718, and a hardware processing circuitry 720. A person skilled in the art will appreciate that other components not shown may be used in addition to the components shown to form a complete eNB.

[0085] In some embodiments, physical layer circuitry 712 includes a transceiver 713 for providing signals to and from UE 730. Transceiver 713 provides signals to and from UEs or other devices using one or more antennas 705. In some embodiments, MAC circuitry 714 controls access to the wireless medium. Memory 718 may be, or may include, a storage media/medium such as a magnetic storage media (e.g., magnetic tapes or magnetic disks), an optical storage media (e.g., optical discs), an electronic storage media (e.g., conventional hard disk drives, solid-state disk drives, or flash-memory-based storage media), or any tangible storage media or non-transitory storage media. Hardware processing circuitry 720 may comprise logic devices or circuitry to perform various operations. In some embodiments, processor 716 and memory 718 are arranged to perform the operations of hardware processing circuitry 720, such as operations described herein with reference to logic devices and circuitry within eNB 710 and/or hardware processing circuitry 720.

[0086] Accordingly, in some embodiments, eNB 710 may be a device comprising an application processor, a memory, one or more antenna ports, and an interface for allowing the application processor to communicate with another device. [0087] As is also illustrated in Fig. 7, in some embodiments, UE 730 may include a physical layer circuitry 732, a MAC circuitry 734, a processor 736, a memory 738, a hardware processing circuitry 740, a wireless interface 742, and a display 744. A person skilled in the art would appreciate that other components not shown may be used in addition to the components shown to form a complete UE.

[0088] In some embodiments, physical layer circuitry 732 includes a transceiver 733 for providing signals to and from eNB 710 (as well as other eNBs). Transceiver 733 provides signals to and from eNBs or other devices using one or more antennas 725. In some embodiments, MAC circuitry 734 controls access to the wireless medium. Memory 738 may be, or may include, a storage media/medium such as a magnetic storage media (e.g., magnetic tapes or magnetic disks), an optical storage media (e.g., optical discs), an electronic storage media (e.g., conventional hard disk drives, solid-state disk drives, or flash-memory -based storage media), or any tangible storage media or non-transitory storage media. Wireless interface 742 may be arranged to allow the processor to communicate with another device. Display 744 may provide a visual and/or tactile display for a user to interact with UE 730, such as a touch-screen display. Hardware processing circuitry 740 may comprise logic devices or circuitry to perform various operations. In some embodiments, processor 736 and memory 738 may be arranged to perform the operations of hardware processing circuitry 740, such as operations described herein with reference to logic devices and circuitry within UE 730 and/or hardware processing circuitry 740.

[0089] Accordingly, in some embodiments, UE 730 may be a device comprising an application processor, a memory, one or more antennas, a wireless interface for allowing the application processor to communicate with another device, and a touch-screen display.

[0090] Elements of Fig. 7, and elements of other figures having the same names or reference numbers, can operate or function in the manner described herein with respect to any such figures (although the operation and function of such elements is not limited to such descriptions). For example, Figs. 8, 9, and 12 also depict embodiments of eNBs, hardware processing circuitry of eNBs, UEs, and/or hardware processing circuitry of UEs, and the embodiments described with respect to Fig. 7 and Figs. 8, 9, and 12 can operate or function in the manner described herein with respect to any of the figures.

[0091] In addition, although eNB 710 and UE 730 are each described as having several separate functional elements, one or more of the functional elements may be combined and may be implemented by combinations of software-configured elements and/or other hardware elements. In some embodiments of this disclosure, the functional elements can refer to one or more processes operating on one or more processing elements. Examples of software and/or hardware configured elements include Digital Signal Processors (DSPs), one or more microprocessors, DSPs, Field-Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Radio-Frequency Integrated Circuits (RFICs), and so on.

[0092] Fig. 8 illustrates hardware processing circuitries for an eNB for resource allocation in low latency wireless systems, in accordance with some embodiments of the disclosure. With reference to Fig. 7, an eNB may include various hardware processing circuitries discussed below (such as hardware processing circuitry 800 of Fig. 8), which may in turn comprise logic devices and/or circuitry operable to perform various operations. For example, in Fig. 7, eNB 710 (or various elements or components therein, such as hardware processing circuitry 720, or combinations of elements or components therein) may include part of, or all of, these hardware processing circuitries.

[0093] In some embodiments, one or more devices or circuitries within these hardware processing circuitries may be implemented by combinations of software-configured elements and/or other hardware elements. For example, processor 716 (and/or one or more other processors which eNB 710 may comprise), memory 718, and/or other elements or components of eNB 710 (which may include hardware processing circuitry 720) may be arranged to perform the operations of these hardware processing circuitries, such as operations described herein with reference to devices and circuitry within these hardware processing circuitries. In some embodiments, processor 716 (and/or one or more other processors which eNB 710 may comprise) may be a baseband processor.

[0094] Returning to Fig. 8, an apparatus of eNB 710 (or another eNB or base station), which may be operable to communicate with one or more UEs on a wireless network, may comprise hardware processing circuitry 800. In some embodiments, hardware processing circuitry 800 may comprise one or more antenna ports 805 operable to provide various transmissions over a wireless communication channel (such as wireless communication channel 750). Antenna ports 805 may be coupled to one or more antennas 807 (which may be antennas 705). In some embodiments, hardware processing circuitry 800 may incorporate antennas 807, while in other embodiments, hardware processing circuitry 800 may merely be coupled to antennas 807.

[0095] Antenna ports 805 and antennas 807 may be operable to provide signals from an eNB to a wireless communications channel and/or a UE, and may be operable to provide signals from a UE and/or a wireless communications channel to an eNB. For example, antenna ports 805 and antennas 807 may be operable to provide transmissions from eNB 710 to wireless communication channel 750 (and from there to UE 730, or to another UE).

Similarly, antennas 807 and antenna ports 805 may be operable to provide transmissions from a wireless communication channel 750 (and beyond that, from UE 730, or another UE) to eNB 710.

[0096] Hardware processing circuitry 800 may comprise various circuitries operable in accordance with the various embodiments discussed herein. With reference to Fig. 8, hardware processing circuitry 800 may comprise a first circuitry 810, a second circuitry 820, and/or a third circuitry 830. First circuitry 810 may be operable to establish a time-domain bundling window spanning an initial S-TTI and one or more subsequent S-TTIs. First circuitry 810 may be operable to provide information regarding the initial S-TTI and/or the subsequent S-TTIs via an interface 815. Second circuitry 820 may be operable to generate a first DCI carried by a first DL control region of the time-domain bundling window. Second circuitry 820 may be operable to generate a second DCI carried by a second DL control region of the time-domain bundling window. Third circuitry 830 may be operable to determine resources scheduled for data transmission in one of the subsequent S-TTI's based upon scheduling information in the first DCI and scheduling information in the second DCI. Third circuitry 830 may be operable to provide information regarding the resources scheduled for data transmission via an interface 835.

[0097] In some embodiments, the first DL control region may be within the initial

S-TTI, and the second DL control region may be within the one or more subsequent S-TTIs. For some embodiments, the first DCI may carry a B-RA indicator indicating a resource allocation for an S-PDSCH transmission in one of the subsequent S-TTIs, and a search space for the second DCI may be contained within the resource allocation for the S-PDSCH transmission. In some embodiments, the second DCI may carry an A-RA indicator indicating a resource allocation for an S-PDSCH transmission in one of the subsequent S-TTIs.

[0098] For some embodiments, the number of consecutive DL S-TTIs in the one or more subsequent S-TTI's may be set to at least one of: a predetermined number, a number semi-statically configured by RRC, or a number dynamically indicated by PDCCH. In some embodiments, the time-domain bundling window may span one millisecond. For some embodiments, the first DCI may carry at least one of: a Modulation and Coding Scheme indicator; and a B-RA indicator. In some embodiments, the second DCI may carry at least one of: a HARQ process number, a DL DAI, a new data indicator, a CQI indicator, or an A- RA indicator. For some embodiments, a CRC having fewer than 16 bits may be appended to the second DCI. In some embodiments, the first DL control region may be one of: a USS, or a CSS.

[0099] In some embodiments, second circuitry 820 may be operable to generate one or more additional DCIs carried by one or more additional DL control regions of the time- domain bundling window. For some embodiments, first circuitry 810 may be operable to establish an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a B-RA indicator carried by the first DCI. In some embodiments, first circuitry 810 may be operable to establish one or more RBGs that comprise sets of consecutive physical RBs spanning the S-TTI region. In various embodiments, the second DCI may carry an A-RA indicator comprising a bitmap for scheduling data processing across the initial S-TTI and the one or more subsequent S-TTIs.

[00100] For some embodiments, first circuitry 810 may be operable to establish an

S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a B-RA indicator carried by the first DCI. In some embodiments, a starting RB for an S- PDSCH is implicitly indicated by a lowest RB of an S-PDCCH scheduling the S-PDSCH. For some embodiments, an A-RA indicator carried by the second DCI may indicate a number of consecutive RBs in frequency for the S-PDSCH.

[00101] In some embodiments, a lowest RB of the number of consecutive RBs for the

S-PDSCH may be the same as a lowest RB for the S-PDCCH.

[00102] In some embodiments, first circuitry 810, second circuitry 820, and/or third circuitry 830 may be implemented as separate circuitries. In other embodiments, first circuitry 810, second circuitry 820, and/or third circuitry 830 may be combined and implemented together in a circuitry without altering the essence of the embodiments.

[00103] Fig. 9 illustrates hardware processing circuitries for a UE for resource allocation in low latency wireless systems, in accordance with some embodiments of the disclosure. With reference to Fig. 7, a UE may include various hardware processing circuitries discussed below (such as hardware processing circuitry 900 of Fig. 9), which may in turn comprise logic devices and/or circuitry operable to perform various operations. For example, in Fig. 7, UE 730 (or various elements or components therein, such as hardware processing circuitry 740, or combinations of elements or components therein) may include part of, or all of, these hardware processing circuitries.

[00104] In some embodiments, one or more devices or circuitries within these hardware processing circuitries may be implemented by combinations of software-configured elements and/or other hardware elements. For example, processor 736 (and/or one or more other processors which UE 730 may comprise), memory 738, and/or other elements or components of UE 730 (which may include hardware processing circuitry 740) may be arranged to perform the operations of these hardware processing circuitries, such as operations described herein with reference to devices and circuitry within these hardware processing circuitries. In some embodiments, processor 736 (and/or one or more other processors which UE 730 may comprise) may be a baseband processor.

[00105] Returning to Fig. 9, an apparatus of UE 730 (or another UE or mobile handset), which may be operable to communicate with one or more eNBs on a wireless network, may comprise hardware processing circuitry 900. In some embodiments, hardware processing circuitry 900 may comprise one or more antenna ports 905 operable to provide various transmissions over a wireless communication channel (such as wireless

communication channel 750). Antenna ports 905 may be coupled to one or more antennas 907 (which may be antennas 725). In some embodiments, hardware processing circuitry 900 may incorporate antennas 907, while in other embodiments, hardware processing circuitry 900 may merely be coupled to antennas 907.

[00106] Antenna ports 905 and antennas 907 may be operable to provide signals from a UE to a wireless communications channel and/or an eNB, and may be operable to provide signals from an eNB and/or a wireless communications channel to a UE. For example, antenna ports 905 and antennas 907 may be operable to provide transmissions from UE 730 to wireless communication channel 750 (and from there to eNB 710, or to another eNB). Similarly, antennas 907 and antenna ports 905 may be operable to provide transmissions from a wireless communication channel 750 (and beyond that, from eNB 710, or another eNB) to UE 730.

[00107] Hardware processing circuitry 900 may comprise various circuitries operable in accordance with the various embodiments discussed herein. With reference to Fig. 9, hardware processing circuitry 900 may comprise a first circuitry 910, a second circuitry 920, and/or a third circuitry 930. First circuitry 910 may be operable to establish a time-domain bundling window spanning an initial S-TTI and one or more subsequent S-TTIs. First circuitry 910 may provide information regarding the bundling window, the initial S-TTI, and the subsequent S-TTIs to second circuitry 920 via an interface 915. Second circuitry 920 may be operable to process a first DCI carried by a first DL control region of the time- domain bundling window. Second circuitry 920 may be operable to process a second DCI carried by a second DL control region of the time-domain bundling window. Third circuitry 930 may be operable to determine resources scheduled for data transmission in one of the subsequent S-TTI's based upon scheduling information in the first DCI and scheduling information in the second DCI. Second circuitry 920 may be operable to provide the scheduling information to third circuitry 930 via an interface 925.

[00108] In some embodiments, the first DL control region may be within the initial

[00109] For some embodiments, the number of consecutive DL S-TTIs in the one or more subsequent S-TTI's may be set to at least one of: a predetermined number, a number semi-statically configured by RRC, or a number dynamically indicated by PDCCH. In some embodiments, the time-domain bundling window may span one millisecond. For some embodiments, the first DCI may carry at least one of: a Modulation and Coding Scheme indicator; and a B-RA indicator. In some embodiments, the second DCI may carry at least one of: a HARQ process number, a DL DAI, a new data indicator, a CQI indicator, or an A- RA indicator. For some embodiments, a CRC having fewer than 16 bits may be appended to the second DCI. In some embodiments, the first DL control region may be one of: a USS, or a CSS.

[00110] In some embodiments, second circuitry 920 may be operable to process one or more additional DCIs carried by one or more additional DL control regions of the time- domain bundling window. For some embodiments, first circuitry 910 may be operable to establish an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a B-RA indicator carried by the first DCI. In some embodiments, first circuitry 910 may be operable to establish one or more RBGs that comprise sets of consecutive physical RBs spanning the S-TTI region. In various embodiments, the second DCI carries an A-RA indicator comprising a bitmap for scheduling data processing across the initial S-TTI and the one or more subsequent S-TTIs.

[00111] For some embodiments, first circuitry 910 may be operable to establish an

S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a B-RA indicator carried by the first DCI. In some embodiments, a starting RB for an S- PDSCH may be implicitly indicated by a lowest RB of an S-PDCCH scheduling the S- PDSCH. For some embodiments, an A-RA indicator carried by the second DCI may indicate a number of consecutive RBs in frequency for the S-PDSCH.

[00112] In some embodiments, a lowest RB of the number of consecutive RBs for the

S-PDSCH may be the same as a lowest RB for the S-PDCCH.

[00113] In some embodiments, first circuitry 910, second circuitry 920, and/or third circuitry 930 may be implemented as separate circuitries. In other embodiments, first circuitry 910, second circuitry 920, and third circuitry 930 may be combined and

implemented together in a circuitry without altering the essence of the embodiments.

[00114] Fig. 10 illustrates methods for an eNB for resource allocation in low latency wireless systems, in accordance with some embodiments of the disclosure. With reference to Fig. 7, various methods that may relate to eNB 710 and hardware processing circuitry 720 are discussed below. Although the actions in method 1000 of Fig. 10 are shown in a particular order, the order of the actions can be modified. Thus, the illustrated embodiments can be performed in a different order, and some actions may be performed in parallel. Some of the actions and/or operations listed in Fig. 10 are optional in accordance with certain

embodiments. The numbering of the actions presented is for the sake of clarity and is not intended to prescribe an order of operations in which the various actions must occur.

Additionally, operations from the various flows may be utilized in a variety of combinations.

[00115] Moreover, in some embodiments, machine readable storage media may have executable instructions that, when executed, cause eNB 710 and/or hardware processing circuitry 720 to perform an operation comprising the methods of Fig. 10. Such machine readable storage media may include any of a variety of storage media, like magnetic storage media (e.g., magnetic tapes or magnetic disks), optical storage media (e.g., optical discs), electronic storage media (e.g., conventional hard disk drives, solid-state disk drives, or flash- memory-based storage media), or any other tangible storage media or non-transitory storage media.

[00116] In some embodiments, an apparatus may comprise means for performing various actions and/or operations of the methods of Fig. 10.

[00117] Returning to Fig. 10, various methods may be in accordance with the various embodiments discussed herein. A method 1000 may comprise an establishing 1010, a generating 1015, a generating 1020, and a determining 1025. Method 1000 may also comprise a generating 1030, an establishing 1040, an establishing 1045, and/or an establishing 1050. [00118] In establishing 1010, a time-domain bundling window spanning an initial

S-TTI and one or more subsequent S-TTIs may be established. In generating 1015, a first DCI carried by a first DL control region of the time-domain bundling window may be generated. In generating 1020, a second DCI carried by a second DL control region of the time-domain bundling window may be generated. In determining 1025, resources scheduled for data transmission in one of the subsequent S-TTI's may be determined based upon scheduling information in the first DCI and scheduling information in the second DCI.

[00119] In some embodiments, the first DL control region may be within the initial

[00120] For some embodiments, the number of consecutive DL S-TTIs in the one or more subsequent S-TTI's may be set to at least one of: a predetermined number, a number semi-statically configured by RRC, or a number dynamically indicated by PDCCH. In some embodiments, the time-domain bundling window may span one millisecond. For some embodiments, the first DCI may carry at least one of: a Modulation and Coding Scheme indicator; and a B-RA indicator. In some embodiments, the second DCI may carry at least one of: a HARQ process number, a DL DAI, a new data indicator, a CQI indicator, or an A- RA indicator. For some embodiments, a CRC having fewer than 16 bits may be appended to the second DCI. In some embodiments, the first DL control region may be one of: a USS, or a CSS.

[00121] In generating 1030, one or more additional DCIs carried by one or more additional DL control regions of the time-domain bundling window may be generated. In establishing 1040, an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs may be established, based upon a B-RA indicator carried by the first DCI. In establishing 1045, one or more RBGs that comprise sets of consecutive physical RBs spanning the S-TTI region may be established. The second DCI may carry an A-RA indicator comprising a bitmap for scheduling data processing across the initial S-TTI and the one or more subsequent S-TTIs.

[00122] In establishing 1050, an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs may be established, based upon a B-RA indicator carried by the first DCI. In some embodiments, a starting RB for an S-PDSCH may be implicitly indicated by a lowest RB of an S-PDCCH scheduling the S-PDSCH. In some embodiments, an A-RA indicator carried by the second DCI may indicate a number of consecutive RBs in frequency for the S-PDSCH.

[00123] In some embodiments, a lowest RB of the number of consecutive RBs for the

S-PDSCH may be the same as a lowest RB for the S-PDCCH.

[00124] Fig. 11 illustrates methods for a UE for resource allocation in low latency wireless systems, in accordance with some embodiments of the disclosure. With reference to Fig. 7, methods that may relate to UE 730 and hardware processing circuitry 740 are discussed below. Although the actions in the method 1100 of Fig. 11 are shown in a particular order, the order of the actions can be modified. Thus, the illustrated embodiments can be performed in a different order, and some actions may be performed in parallel. Some of the actions and/or operations listed in Fig. 11 are optional in accordance with certain embodiments. The numbering of the actions presented is for the sake of clarity and is not intended to prescribe an order of operations in which the various actions must occur.

[00125] Moreover, in some embodiments, machine readable storage media may have executable instructions that, when executed, cause UE 730 and/or hardware processing circuitry 740 to perform an operation comprising the methods of Fig. 11. Such machine readable storage media may include any of a variety of storage media, like magnetic storage media (e.g., magnetic tapes or magnetic disks), optical storage media (e.g., optical discs), electronic storage media (e.g., conventional hard disk drives, solid-state disk drives, or flash- memory-based storage media), or any other tangible storage media or non-transitory storage media.

[00126] In some embodiments, an apparatus may comprise means for performing various actions and/or operations of the methods of Fig. 11.

[00127] Returning to Fig. 11, various methods may be in accordance with the various embodiments discussed herein. A method 1100 may comprise an establishing 1110, a processing 1115, a processing 1120, and a determining 1125. Method 1100 may also comprise a processing 1130, an establishing 1140, an establishing 1145, and/or an establishing 1150.

[00128] In establishing 1110, a time-domain bundling window spanning an initial

S-TTI and one or more subsequent S-TTIs may be established. In processing 1115, a first DCI carried by a first DL control region of the time-domain bundling window may be processed. In processing 1120, a second DCI carried by a second DL control region of the time-domain bundling window may be processed. In determining 1125, resources scheduled for data transmission in one of the subsequent S-TTI's may be determined, based upon scheduling information in the first DCI and scheduling information in the second DCI.

[00129] In some embodiments, the first DL control region may be within the initial

[00130] For some embodiments, the number of consecutive DL S-TTIs in the one or more subsequent S-TTI's may be set to at least one of: a predetermined number, a number semi-statically configured by RRC, or a number dynamically indicated by PDCCH. In some embodiments, the time-domain bundling window may span one millisecond. For some embodiments, the first DCI may carry at least one of: a Modulation and Coding Scheme indicator; and a B-RA indicator. In some embodiments, the second DCI may carry at least one of: a HARQ process number, a DL DAI, a new data indicator, a CQI indicator, or an A- RA indicator. For some embodiments, a CRC having fewer than 16 bits may be appended to the second DCI. In some embodiments, the first DL control region may be one of: a USS, or a CSS.

[00131] In processing 1130, one or more additional DCIs carried by one or more additional DL control regions of the time-domain bundling window may be processed. In establishing 1140, an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs may be established, based upon a B-RA indicator carried by the first DCI. In establishing 1145, one or more RBGs that comprise sets of consecutive physical RBs spanning the S-TTI region may be established. In some embodiments, the second DCI may carry an A-RA indicator comprising a bitmap for scheduling data processing across the initial S-TTI and the one or more subsequent S-TTIs.

[00132] In establishing 1150, an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs may be established, based upon a B-RA indicator carried by the first DCI. In some embodiments, a starting RB for an S-PDSCH may be implicitly indicated by a lowest RB of an S-PDCCH scheduling the S-PDSCH. In some embodiments, an A-RA indicator may be carried by the second DCI indicates a number of consecutive RBs in frequency for the S-PDSCH.

[00133] In some embodiments, a lowest RB of the number of consecutive RBs for the

S-PDSCH may be the same as a lowest RB for the S-PDCCH.

[00134] Fig. 12 illustrates example components of a UE device 1200, in accordance with some embodiments of the disclosure. In some embodiments, a UE device 1200 may include application circuitry 1202, baseband circuitry 1204, Radio Frequency (RF) circuitry 1206, front-end module (FEM) circuitry 1208, a low-power wake-up receiver (LP-WUR), and one or more antennas 1210, coupled together at least as shown. In some embodiments, the UE device 1200 may include additional elements such as, for example, memory /storage, display, camera, sensor, and/or input/output (I/O) interface.

[00135] The application circuitry 1202 may include one or more application processors. For example, the application circuitry 1202 may include circuitry such as, but not limited to, one or more single-core or multi-core processors. The processor(s) may include any combination of general-purpose processors and dedicated processors (e.g., graphics processors, application processors, etc.). The processors may be coupled with and/or may include memory /storage and may be configured to execute instructions stored in the memory /storage to enable various applications and/or operating systems to run on the system.

[00136] The baseband circuitry 1204 may include circuitry such as, but not limited to, one or more single-core or multi-core processors. The baseband circuitry 1204 may include one or more baseband processors and/or control logic to process baseband signals received from a receive signal path of the RF circuitry 1206 and to generate baseband signals for a transmit signal path of the RF circuitry 1206. Baseband processing circuity 1204 may interface with the application circuitry 1202 for generation and processing of the baseband signals and for controlling operations of the RF circuitry 1206. For example, in some embodiments, the baseband circuitry 1204 may include a second generation (2G) baseband processor 1204A, third generation (3G) baseband processor 1204B, fourth generation (4G) baseband processor 1204C, and/or other baseband processor(s) 1204D for other existing generations, generations in development or to be developed in the future (e.g., fifth generation (5G), 6G, etc.). The baseband circuitry 1204 (e.g., one or more of baseband processors 1204A-D) may handle various radio control functions that enable communication with one or more radio networks via the RF circuitry 1206. The radio control functions may include, but are not limited to, signal modulation/demodulation, encoding/decoding, radio frequency shifting, etc. In some embodiments, modulation/demodulation circuitry of the baseband circuitry 1204 may include Fast-Fourier Transform (FFT), precoding, and/or constellation mapping/demapping functionality. In some embodiments, encoding/decoding circuitry of the baseband circuitry 1204 may include convolution, tail-biting convolution, turbo, Viterbi, and/or Low Density Parity Check (LDPC) encoder/decoder functionality. Embodiments of modulation/demodulation and encoder/decoder functionality are not limited to these examples and may include other suitable functionality in other embodiments.

[00137] In some embodiments, the baseband circuitry 1204 may include elements of a protocol stack such as, for example, elements of an EUTRAN protocol including, for example, physical (PHY), media access control (MAC), radio link control (RLC), packet data convergence protocol (PDCP), and/or RRC elements. A central processing unit (CPU) 1204E of the baseband circuitry 1204 may be configured to run elements of the protocol stack for signaling of the PHY, MAC, RLC, PDCP and/or RRC layers. In some

embodiments, the baseband circuitry may include one or more audio digital signal processor(s) (DSP) 1204F. The audio DSP(s) 1204F may be include elements for compression/decompression and echo cancellation and may include other suitable processing elements in other embodiments. Components of the baseband circuitry may be suitably combined in a single chip, a single chipset, or disposed on a same circuit board in some embodiments. In some embodiments, some or all of the constituent components of the baseband circuitry 1204 and the application circuitry 1202 may be implemented together such as, for example, on a system on a chip (SOC).

[00138] In some embodiments, the baseband circuitry 1204 may provide for communication compatible with one or more radio technologies. For example, in some embodiments, the baseband circuitry 1204 may support communication with an evolved universal terrestrial radio access network (EUTRAN) and/or other wireless metropolitan area networks (WMAN), a wireless local area network (WLAN), a wireless personal area network (WPAN). Embodiments in which the baseband circuitry 1204 is configured to support radio communications of more than one wireless protocol may be referred to as multi-mode baseband circuitry.

[00139] RF circuitry 1206 may enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium. In various embodiments, the RF circuitry 1206 may include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network. RF circuitry 1206 may include a receive signal path which may include circuitry to down-convert RF signals received from the FEM circuitry 1208 and provide baseband signals to the baseband circuitry 1204. RF circuitry 1206 may also include a transmit signal path which may include circuitry to up- convert baseband signals provided by the baseband circuitry 1204 and provide RF output signals to the FEM circuitry 1208 for transmission.

[00140] In some embodiments, the RF circuitry 1206 may include a receive signal path and a transmit signal path. The receive signal path of the RF circuitry 1206 may include mixer circuitry 1206 A, amplifier circuitry 1206B and filter circuitry 1206C. The transmit signal path of the RF circuitry 1206 may include filter circuitry 1206C and mixer circuitry 1206 A. RF circuitry 1206 may also include synthesizer circuitry 1206D for synthesizing a frequency for use by the mixer circuitry 1206A of the receive signal path and the transmit signal path. In some embodiments, the mixer circuitry 1206 A of the receive signal path may be configured to down-convert RF signals received from the FEM circuitry 1208 based on the synthesized frequency provided by synthesizer circuitry 1206D. The amplifier circuitry 1206B may be configured to amplify the down-converted signals and the filter circuitry 1206C may be a low-pass filter (LPF) or band-pass filter (BPF) configured to remove unwanted signals from the down-converted signals to generate output baseband signals. Output baseband signals may be provided to the baseband circuitry 1204 for further processing. In some embodiments, the output baseband signals may be zero-frequency baseband signals, although this is not a requirement. In some embodiments, mixer circuitry 1206A of the receive signal path may comprise passive mixers, although the scope of the embodiments is not limited in this respect.

[00141] In some embodiments, the mixer circuitry 1206A of the transmit signal path may be configured to up-convert input baseband signals based on the synthesized frequency provided by the synthesizer circuitry 1206D to generate RF output signals for the FEM circuitry 1208. The baseband signals may be provided by the baseband circuitry 1204 and may be filtered by filter circuitry 1206C. The filter circuitry 1206C may include a low-pass filter (LPF), although the scope of the embodiments is not limited in this respect.

[00142] In some embodiments, the mixer circuitry 1206A of the receive signal path and the mixer circuitry 1206A of the transmit signal path may include two or more mixers and may be arranged for quadrature down-conversion and/or up-conversion respectively. In some embodiments, the mixer circuitry 1206A of the receive signal path and the mixer circuitry 1206A of the transmit signal path may include two or more mixers and may be arranged for image rejection (e.g., Hartley image rejection). In some embodiments, the mixer circuitry 1206 A of the receive signal path and the mixer circuitry 1206 A may be arranged for direct down-conversion and/or direct up-conversion, respectively. In some embodiments, the mixer circuitry 1206 A of the receive signal path and the mixer circuitry 1206A of the transmit signal path may be configured for super-heterodyne operation.

[00143] In some embodiments, the output baseband signals and the input baseband signals may be analog baseband signals, although the scope of the embodiments is not limited in this respect. In some alternate embodiments, the output baseband signals and the input baseband signals may be digital baseband signals. In these alternate embodiments, the RF circuitry 1206 may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuitry and the baseband circuitry 1204 may include a digital baseband interface to communicate with the RF circuitry 1206.

[00144] In some dual-mode embodiments, a separate radio IC circuitry may be provided for processing signals for each spectrum, although the scope of the embodiments is not limited in this respect.

[00145] In some embodiments, the synthesizer circuitry 1206D may be a fractional -N synthesizer or a fractional N/N+l synthesizer, although the scope of the embodiments is not limited in this respect as other types of frequency synthesizers may be suitable. For example, synthesizer circuitry 1206D may be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer comprising a phase-locked loop with a frequency divider.

[00146] The synthesizer circuitry 1206D may be configured to synthesize an output frequency for use by the mixer circuitry 1206A of the RF circuitry 1206 based on a frequency input and a divider control input. In some embodiments, the synthesizer circuitry 1206D may be a fractional N/N+l synthesizer.

[00147] In some embodiments, frequency input may be provided by a voltage controlled oscillator (VCO), although that is not a requirement. Divider control input may be provided by either the baseband circuitry 1204 or the applications processor 1202 depending on the desired output frequency. In some embodiments, a divider control input (e.g., N) may be determined from a look-up table based on a channel indicated by the applications processor 1202.

[00148] Synthesizer circuitry 1206D of the RF circuitry 1206 may include a divider, a delay-locked loop (DLL), a multiplexer and a phase accumulator. In some embodiments, the divider may be a dual modulus divider (DMD) and the phase accumulator may be a digital phase accumulator (DP A). In some embodiments, the DMD may be configured to divide the input signal by either N or N+l (e.g., based on a carry out) to provide a fractional division ratio. In some example embodiments, the DLL may include a set of cascaded, tunable, delay elements, a phase detector, a charge pump and a D-type flip-flop. In these embodiments, the delay elements may be configured to break a VCO period up into Nd equal packets of phase, where Nd is the number of delay elements in the delay line. In this way, the DLL provides negative feedback to help ensure that the total delay through the delay line is one VCO cycle.

[00149] In some embodiments, synthesizer circuitry 1206D may be configured to generate a carrier frequency as the output frequency, while in other embodiments, the output frequency may be a multiple of the carrier frequency (e.g., twice the carrier frequency, four times the carrier frequency) and used in conjunction with quadrature generator and divider circuitry to generate multiple signals at the carrier frequency with multiple different phases with respect to each other. In some embodiments, the output frequency may be a LO frequency (fLO). In some embodiments, the RF circuitry 1206 may include an IQ/polar converter.

[00150] FEM circuitry 1208 may include a receive signal path which may include circuitry configured to operate on RF signals received from one or more antennas 1210, amplify the received signals and provide the amplified versions of the received signals to the RF circuitry 1206 for further processing. FEM circuitry 1208 may also include a transmit signal path which may include circuitry configured to amplify signals for transmission provided by the RF circuitry 1206 for transmission by one or more of the one or more antennas 1210.

[00151] In some embodiments, the FEM circuitry 1208 may include a TX/RX switch to switch between transmit mode and receive mode operation. The FEM circuitry may include a receive signal path and a transmit signal path. The receive signal path of the FEM circuitry may include a low-noise amplifier (LNA) to amplify received RF signals and provide the amplified received RF signals as an output (e.g., to the RF circuitry 1206). The transmit signal path of the FEM circuitry 1208 may include a power amplifier (PA) to amplify input RF signals (e.g., provided by RF circuitry 1206), and one or more filters to generate RF signals for subsequent transmission (e.g., by one or more of the one or more antennas 1210.

[00152] In some embodiments, the UE 1200 comprises a plurality of power saving mechanisms. If the UE 1200 is in an RRC_Connected state, where it is still connected to the eNB as it expects to receive traffic shortly, then it may enter a state known as Discontinuous Reception Mode (DRX) after a period of inactivity. During this state, the device may power down for brief intervals of time and thus save power.

[00153] If there is no data traffic activity for an extended period of time, then the UE

1200 may transition off to an RRC Idle state, where it disconnects from the network and does not perform operations such as channel quality feedback, handover, etc. The UE 1200 goes into a very low power state and it performs paging where again it periodically wakes up to listen to the network and then powers down again. Since the device might not receive data in this state, in order to receive data, it should transition back to RRC Connected state.

[00154] An additional power saving mode may allow a device to be unavailable to the network for periods longer than a paging interval (ranging from seconds to a few hours). During this time, the device is totally unreachable to the network and may power down completely. Any data sent during this time incurs a large delay and it is assumed the delay is acceptable.

[00155] In addition, in various embodiments, an eNB device may include components substantially similar to one or more of the example components of UE device 1200 described herein.

[00156] It is pointed out that elements of any of the Figures herein having the same reference numbers and/or names as elements of any other Figure herein may, in various embodiments, operate or function in a manner similar those elements of the other Figure (without being limited to operating or functioning in such a manner).

[00157] Reference in the specification to "an embodiment," "one embodiment," "some embodiments," or "other embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiments is included in at least some embodiments, but not necessarily all embodiments. The various appearances of "an embodiment," "one embodiment," or "some embodiments" are not necessarily all referring to the same embodiments. If the specification states a component, feature, structure, or characteristic "may," "might," or "could" be included, that particular component, feature, structure, or characteristic is not required to be included. If the specification or claim refers to "a" or "an" element, that does not mean there is only one of the elements. If the specification or claims refer to "an additional" element, that does not preclude there being more than one of the additional element.

[00158] Furthermore, the particular features, structures, functions, or characteristics may be combined in any suitable manner in one or more embodiments. For example, a first embodiment may be combined with a second embodiment anywhere the particular features, structures, functions, or characteristics associated with the two embodiments are not mutually exclusive.

[00159] While the disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of such embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description. For example, other memory architectures e.g., Dynamic RAM (DRAM) may use the

embodiments discussed. The embodiments of the disclosure are intended to embrace all such alternatives, modifications, and variations as to fall within the broad scope of the appended claims.

[00160] In addition, well known power/ground connections to integrated circuit (IC) chips and other components may or may not be shown within the presented figures, for simplicity of illustration and discussion, and so as not to obscure the disclosure. Further, arrangements may be shown in block diagram form in order to avoid obscuring the disclosure, and also in view of the fact that specifics with respect to implementation of such block diagram arrangements are highly dependent upon the platform within which the present disclosure is to be implemented (i.e., such specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the disclosure, it should be apparent to one skilled in the art that the disclosure can be practiced without, or with variation of, these specific details. The description is thus to be regarded as illustrative instead of limiting.

[00161] The following examples pertain to further embodiments. Specifics in the examples may be used anywhere in one or more embodiments. All optional features of the apparatus described herein may also be implemented with respect to a method or process.

[00162] Example 1 provides an apparatus of an Evolved Node B (eNB) operable to communicate with a User Equipment (UE) on a wireless network, comprising: one or more processors to: establish a time-domain bundling window spanning an initial Short

Transmission Time Interval (S-TTI) and one or more subsequent S-TTIs; generate a first Downlink Control Information (DCI) carried by a first Downlink (DL) control region of the time-domain bundling window; generate a second DCI carried by a second DL control region of the time-domain bundling window; and determine resources scheduled for data transmission in one of the subsequent S-TTFs based upon scheduling information in the first DCI and scheduling information in the second DCI.

[00163] In example 2, the apparatus of example 1, comprising a transceiver circuitry for at least one of: generating transmissions, encoding transmissions, processing

transmissions, or decoding transmissions.

[00164] In example 3, the apparatus of either of examples 1 or 2, wherein the first DL control region is within the initial S-TTI; and wherein the second DL control region is within the one or more subsequent S-TTIs. [00165] In example 4, the apparatus of any of examples 1 through 3, wherein the first

DCI carries a Basic Resource Assignment (B-RA) indicator indicating a resource allocation for a Shortened Physical Downlink Shared Channel (S-PDSCH) transmission in one of the subsequent S-TTIs; and wherein a search space for the second DCI is contained within the resource allocation for the S-PDSCH transmission.

[00166] In example 5, the apparatus of example 4, wherein the second DCI carries an

Additional Resource Assignment (A-RA) indicator indicating a resource allocation for a Shortened Physical Downlink Shared Channel (S-PDSCH) transmission in one of the subsequent S-TTIs.

[00167] In example 6, the apparatus of any of examples 1 through 5, wherein the number of consecutive DL S-TTIs in the one or more subsequent S-TTFs is set to at least one of: a predetermined number, a number semi-statically configured by Radio Resource Control (RRC), or a number dynamically indicated by Physical Downlink Control Channel

(PDCCH).

[00168] In example 7, the apparatus of any of examples 1 through 6, wherein the time- domain bundling window spans one millisecond.

[00169] In example 8, the apparatus of any of examples 1 through 7, wherein the first

DCI carries at least one of: a Modulation and Coding Scheme indicator; and a Basic Resource Assignment (B-RA) indicator.

[00170] In example 9, the apparatus of any of examples 1 through 8, wherein the second DCI carries at least one of: a Hybrid Automatic Repeat Request (HARQ) process number, a DL Assignment Index (DAI), a new data indicator, a Channel Quality Indicator (CQI) indicator, or an Additional Resource Assignment (A-RA) indicator.

[00171] In example 10, the apparatus of any of examples 1 through 9, wherein a Cyclic

Redundancy Check (CRC) having fewer than 16 bits is appended to the second DCI.

[00172] In example 11, the apparatus of any of examples 1 through 10, wherein the first DL control region is one of: a UE-specific Search Space (USS), or a Common Search Space (CSS).

[00173] In example 12, the apparatus of any of examples 1 through 11, wherein the one or more processors are to: generate one or more additional DCIs carried by one or more additional DL control regions of the time-domain bundling window.

[00174] In example 13, the apparatus of any of examples 1 through 12, wherein the one or more processors are to: establish an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; establish one or more Resource Block Groups (RBGs) that comprise sets of consecutive physical Resource Blocks (RBs) spanning the S-TTI region, wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator comprising a bitmap for scheduling data processing across the initial S-TTI and the one or more subsequent S-TTIs.

[00175] In example 14, the apparatus of any of examples 1 through 13, wherein the one or more processors are to: establish an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; wherein a starting Resource Block (RB) for a Shortened Physical Downlink Shared Channel (S-PDSCH) is implicitly indicated by a lowest RB of a Shortened Physical Downlink Control Channel (S-PDCCH) scheduling the S-PDSCH; and wherein an Additional Resource Assignment (A-RA) indicator carried by the second DCI indicates a number of consecutive RBs in frequency for the S-PDSCH.

[00176] In example 15, the apparatus of example 14, wherein a lowest RB of the number of consecutive RBs for the S-PDSCH is the same as a lowest RB for the S-PDCCH.

[00177] Example 16 provides an Evolved Node B (eNB) device comprising an application processor, a memory, one or more antenna ports, and an interface for allowing the application processor to communicate with another device, the eNB device including the apparatus of any of examples 1 through 15.

[00178] Example 17 provides a method comprising: establishing a time-domain bundling window spanning an initial Short Transmission Time Interval (S-TTI) and one or more subsequent S-TTIs; generating a first Downlink Control Information (DCI) carried by a first Downlink (DL) control region of the time-domain bundling window; generating a second DCI carried by a second DL control region of the time-domain bundling window; and determining resources scheduled for data transmission in one of the subsequent S-TTI's based upon scheduling information in the first DCI and scheduling information in the second DCI.

[00179] In example 18, the method of example 17, wherein the first DL control region is within the initial S-TTI; and wherein the second DL control region is within the one or more subsequent S-TTIs.

[00180] In example 19, the method of either of examples 17 or 18, wherein the first

[00181] In example 20, the method of example 19, wherein the second DCI carries an

[00182] In example 21, the method of any of examples 17 through 20, wherein the number of consecutive DL S-TTIs in the one or more subsequent S-TTFs is set to at least one of: a predetermined number, a number semi-statically configured by Radio Resource Control (RRC), or a number dynamically indicated by Physical Downlink Control Channel

(PDCCH).

[00183] In example 22, the method of any of examples 17 through 21, wherein the time-domain bundling window spans one millisecond.

[00184] In example 23, the method of any of examples 17 through 22, wherein the first

[00185] In example 24, the method of any of examples 17 through 23, wherein the second DCI carries at least one of: a Hybrid Automatic Repeat Request (HARQ) process number, a DL Assignment Index (DAI), a new data indicator, a Channel Quality Indicator (CQI) indicator, or an Additional Resource Assignment (A-RA) indicator.

[00186] In example 25, the method of any of examples 17 through 24, wherein a

Cyclic Redundancy Check (CRC) having fewer than 16 bits is appended to the second DCI.

[00187] In example 26, the method of any of examples 17 through 25, wherein the first

DL control region is one of: a UE-specific Search Space (USS), or a Common Search Space (CSS).

[00188] In example 27, the method of any of examples 17 through 26, the operation comprising: generating one or more additional DCIs carried by one or more additional DL control regions of the time-domain bundling window.

[00189] In example 28, the method of any of examples 17 through 27, the operation comprising: establishing an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; establishing one or more Resource Block Groups (RBGs) that comprise sets of consecutive physical Resource Blocks (RBs) spanning the S-TTI region, wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator comprising a bitmap for scheduling data processing across the initial S-TTI and the one or more subsequent S-TTIs.

[00190] In example 29, the method of any of examples 17 through 28, the operation comprising: establishing an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; wherein a starting Resource Block (RB) for a Shortened Physical Downlink Shared Channel (S-PDSCH) is implicitly indicated by a lowest RB of a Shortened Physical

Downlink Control Channel (S-PDCCH) scheduling the S-PDSCH; and wherein an Additional Resource Assignment (A-RA) indicator carried by the second DCI indicates a number of consecutive RBs in frequency for the S-PDSCH.

[00191] In example 30, the method of example 29, wherein a lowest RB of the number of consecutive RBs for the S-PDSCH is the same as a lowest RB for the S-PDCCH.

[00192] In example 31. Machine readable storage media having machine executable instructions stored thereon that, when executed, cause one or more processors to perform a method according to machine readable storage media of any of examples example 17 through 30.

[00193] Example 32 provides an apparatus of an Evolved Node B (eNB) operable to communicate with a User Equipment (UE) on a wireless network, comprising: means for establishing a time-domain bundling window spanning an initial Short Transmission Time Interval (S-TTI) and one or more subsequent S-TTIs; means for generating a first Downlink Control Information (DCI) carried by a first Downlink (DL) control region of the time- domain bundling window; means for generating a second DCI carried by a second DL control region of the time-domain bundling window; and means for determining resources scheduled for data transmission in one of the subsequent S-TTFs based upon scheduling information in the first DCI and scheduling information in the second DCI.

[00194] In example 33, the apparatus of example 32, wherein the first DL control region is within the initial S-TTI; and wherein the second DL control region is within the one or more subsequent S-TTIs.

[00195] In example 34, the apparatus of either of examples 32 or 33, wherein the first

DCI carries a Basic Resource Assignment (B-RA) indicator indicating a resource allocation for a Shortened Physical Downlink Shared Channel (S-PDSCH) transmission in one of the subsequent S-TTIs; and wherein a search space for the second DCI is contained within the resource allocation for the S-PDSCH transmission. [00196] In example 35, the apparatus of example 34, wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator indicating a resource allocation for a Shortened Physical Downlink Shared Channel (S-PDSCH) transmission in one of the subsequent S-TTIs.

[00197] In example 36, the apparatus of any of examples 32 through 35, wherein the number of consecutive DL S-TTIs in the one or more subsequent S-TTFs is set to at least one of: a predetermined number, a number semi-statically configured by Radio Resource Control (RRC), or a number dynamically indicated by Physical Downlink Control Channel

(PDCCH).

[00198] In example 37, the apparatus of any of examples 32 through 36, wherein the time-domain bundling window spans one millisecond.

[00199] In example 38, the apparatus of any of examples 32 through 37, wherein the first DCI carries at least one of: a Modulation and Coding Scheme indicator; and a Basic Resource Assignment (B-RA) indicator.

[00200] In example 39, the apparatus of any of examples 32 through 38, wherein the second DCI carries at least one of: a Hybrid Automatic Repeat Request (HARQ) process number, a DL Assignment Index (DAI), a new data indicator, a Channel Quality Indicator (CQI) indicator, or an Additional Resource Assignment (A-RA) indicator.

[00201] In example 40, the apparatus of any of examples 32 through 39, wherein a

[00202] In example 41, the apparatus of any of examples 32 through 40, wherein the first DL control region is one of: a UE-specific Search Space (USS), or a Common Search Space (CSS).

[00203] In example 42, the apparatus of any of examples 32 through 41, the operation comprising: means for generating one or more additional DCIs carried by one or more additional DL control regions of the time-domain bundling window.

[00204] In example 43, the apparatus of any of examples 32 through 42, the operation comprising: means for establishing an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; means for establishing one or more Resource Block Groups (RBGs) that comprise sets of consecutive physical Resource Blocks (RBs) spanning the S-TTI region, wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator comprising a bitmap for scheduling data processing across the initial S-TTI and the one or more subsequent S-TTIs. [00205] In example 44, the apparatus of any of examples 32 through 43, the operation comprising: means for establishing an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; wherein a starting Resource Block (RB) for a Shortened Physical Downlink Shared Channel (S-PDSCH) is implicitly indicated by a lowest RB of a Shortened Physical Downlink Control Channel (S-PDCCH) scheduling the S-PDSCH; and wherein an Additional Resource Assignment (A-RA) indicator carried by the second DCI indicates a number of consecutive RBs in frequency for the S-PDSCH.

[00206] In example 45, the apparatus of example 44, wherein a lowest RB of the number of consecutive RBs for the S-PDSCH is the same as a lowest RB for the S-PDCCH.

[00207] Example 46 provides machine readable storage media having machine executable instructions that, when executed, cause one or more processors of an Evolved Node B (eNB) to perform an operation comprising: establish a time-domain bundling window spanning an initial Short Transmission Time Interval (S-TTI) and one or more subsequent S-TTIs; generate a first Downlink Control Information (DCI) carried by a first Downlink (DL) control region of the time-domain bundling window; generate a second DCI carried by a second DL control region of the time-domain bundling window; and determine resources scheduled for data transmission in one of the subsequent S-TTI's based upon scheduling information in the first DCI and scheduling information in the second DCI.

[00208] In example 47, the machine readable storage media of example 46, wherein the first DL control region is within the initial S-TTI; and wherein the second DL control region is within the one or more subsequent S-TTIs.

[00209] In example 48, the machine readable storage media of either of examples 46 or

47, wherein the first DCI carries a Basic Resource Assignment (B-RA) indicator indicating a resource allocation for a Shortened Physical Downlink Shared Channel (S-PDSCH) transmission in one of the subsequent S-TTIs; and wherein a search space for the second DCI is contained within the resource allocation for the S-PDSCH transmission.

[00210] In example 49, the machine readable storage media of example 48, wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator indicating a resource allocation for a Shortened Physical Downlink Shared Channel (S-PDSCH) transmission in one of the subsequent S-TTIs.

[00211] In example 50, the machine readable storage media of any of examples 46 through 49, wherein the number of consecutive DL S-TTIs in the one or more subsequent S- TTFs is set to at least one of: a predetermined number, a number semi-statically configured by Radio Resource Control (RRC), or a number dynamically indicated by Physical Downlink Control Channel (PDCCH).

[00212] In example 51, the machine readable storage media of any of examples 46 through 50, wherein the time-domain bundling window spans one millisecond.

[00213] In example 52, the machine readable storage media of any of examples 46 through 51, wherein the first DCI carries at least one of: a Modulation and Coding Scheme indicator; and a Basic Resource Assignment (B-RA) indicator.

[00214] In example 53, the machine readable storage media of any of examples 46 through 52, wherein the second DCI carries at least one of: a Hybrid Automatic Repeat Request (HARQ) process number, a DL Assignment Index (DAI), a new data indicator, a Channel Quality Indicator (CQI) indicator, or an Additional Resource Assignment (A-RA) indicator.

[00215] In example 54, the machine readable storage media of any of examples 46 through 53, wherein a Cyclic Redundancy Check (CRC) having fewer than 16 bits is appended to the second DCI.

[00216] In example 55, the machine readable storage media of any of examples 46 through 54, wherein the first DL control region is one of: a UE-specific Search Space (USS), or a Common Search Space (CSS).

[00217] In example 56, the machine readable storage media of any of examples 46 through 55, the operation comprising: generate one or more additional DCIs carried by one or more additional DL control regions of the time-domain bundling window.

[00218] In example 57, the machine readable storage media of any of examples 46 through 56, the operation comprising: establish an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; establish one or more Resource Block Groups (RBGs) that comprise sets of consecutive physical Resource Blocks (RBs) spanning the S-TTI region, wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator comprising a bitmap for scheduling data processing across the initial S-TTI and the one or more subsequent S-TTIs.

[00219] In example 58, the machine readable storage media of any of examples 46 through 57, the operation comprising: establish an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; wherein a starting Resource Block (RB) for a Shortened Physical Downlink Shared Channel (S-PDSCH) is implicitly indicated by a lowest RB of a Shortened Physical Downlink Control Channel (S-PDCCH) scheduling the S-PDSCH; and wherein an Additional Resource Assignment (A-RA) indicator carried by the second DCI indicates a number of consecutive RBs in frequency for the S-PDSCH.

[00220] In example 59, the machine readable storage media of example 58, wherein a lowest RB of the number of consecutive RBs for the S-PDSCH is the same as a lowest RB for the S-PDCCH.

[00221] Example 60 provides an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node B (eNB) on a wireless network, comprising: one or more processors to: establish a time-domain bundling window spanning an initial Short Transmission Time Interval (S-TTI) and one or more subsequent S-TTIs; process a first Downlink Control Information (DCI) carried by a first Downlink (DL) control region of the time-domain bundling window; process a second DCI carried by a second DL control region of the time-domain bundling window; and determine resources scheduled for data transmission in one of the subsequent S-TTFs based upon scheduling information in the first DCI and scheduling information in the second DCI.

[00222] In example 61, the apparatus of example 60, comprising a transceiver circuitry for at least one of: generating transmissions, encoding transmissions, processing

transmissions, or decoding transmissions.

[00223] In example 62, the apparatus of either of examples 60 or 61, wherein the first

DL control region is within the initial S-TTI; and wherein the second DL control region is within the one or more subsequent S-TTIs.

[00224] In example 63, the apparatus of any of examples 60 through 62, wherein the first DCI carries a Basic Resource Assignment (B-RA) indicator indicating a resource allocation for a Shortened Physical Downlink Shared Channel (S-PDSCH) transmission in one of the subsequent S-TTIs; and wherein a search space for the second DCI is contained within the resource allocation for the S-PDSCH transmission.

[00225] In example 64, the apparatus of example 63, wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator indicating a resource allocation for a Shortened Physical Downlink Shared Channel (S-PDSCH) transmission in one of the subsequent S-TTIs.

[00226] In example 65, the apparatus of any of examples 60 through 64, wherein the number of consecutive DL S-TTIs in the one or more subsequent S-TTI's is set to at least one of: a predetermined number, a number semi-statically configured by Radio Resource Control (RRC), or a number dynamically indicated by Physical Downlink Control Channel

(PDCCH).

[00227] In example 66, the apparatus of any of examples 60 through 65, wherein the time-domain bundling window spans one millisecond.

[00228] In example 67, the apparatus of any of examples 60 through 66, wherein the first DCI carries at least one of: a Modulation and Coding Scheme indicator; and a Basic Resource Assignment (B-RA) indicator.

[00229] In example 68, the apparatus of any of examples 60 through 67, wherein the second DCI carries at least one of: a Hybrid Automatic Repeat Request (HARQ) process number, a DL Assignment Index (DAI), a new data indicator, a Channel Quality Indicator (CQI) indicator, or an Additional Resource Assignment (A-RA) indicator.

[00230] In example 69, the apparatus of any of examples 60 through 68, wherein a

[00231] In example 70, the apparatus of any of examples 60 through 69, wherein the first DL control region is one of: a UE-specific Search Space (USS), or a Common Search Space (CSS).

[00232] In example 71, the apparatus of any of examples 60 through 70, wherein the one or more processors are to: process one or more additional DCIs carried by one or more additional DL control regions of the time-domain bundling window.

[00233] In example 72, the apparatus of any of examples 60 through 71, wherein the one or more processors are to: establish an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; establish one or more Resource Block Groups (RBGs) that comprise sets of consecutive physical Resource Blocks (RBs) spanning the S-TTI region, wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator comprising a bitmap for scheduling data processing across the initial S-TTI and the one or more subsequent S-TTIs.

[00234] In example 73, the apparatus of any of examples 60 through 72, wherein the one or more processors are to: establish an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; wherein a starting Resource Block (RB) for a Shortened Physical Downlink Shared Channel (S-PDSCH) is implicitly indicated by a lowest RB of a Shortened Physical Downlink Control Channel (S-PDCCH) scheduling the S-PDSCH; and wherein an Additional Resource Assignment (A-RA) indicator carried by the second DCI indicates a number of consecutive RBs in frequency for the S-PDSCH.

[00235] In example 74, the apparatus of example 73, wherein a lowest RB of the number of consecutive RBs for the S-PDSCH is the same as a lowest RB for the S-PDCCH.

[00236] Example 75 provides a User Equipment (UE) device comprising an application processor, a memory, one or more antennas, a wireless interface for allowing the application processor to communicate with another device, and a touch-screen display, the UE device including the apparatus of any of examples 60 through 74.

[00237] Example 76 provides a method comprising: establishing a time-domain bundling window spanning an initial Short Transmission Time Interval (S-TTI) and one or more subsequent S-TTIs; processing a first Downlink Control Information (DCI) carried by a first Downlink (DL) control region of the time-domain bundling window; processing a second DCI carried by a second DL control region of the time-domain bundling window; and determining resources scheduled for data transmission in one of the subsequent S-TTI's based upon scheduling information in the first DCI and scheduling information in the second DCI.

[00238] In example 77, the method of example 76, wherein the first DL control region is within the initial S-TTI; and wherein the second DL control region is within the one or more subsequent S-TTIs.

[00239] In example 78, the method of either of examples 76 or 77, wherein the first

[00240] In example 79, the method of example 78, wherein the second DCI carries an

[00241] In example 80, the method of any of examples 76 through 79, wherein the number of consecutive DL S-TTIs in the one or more subsequent S-TTI's is set to at least one of: a predetermined number, a number semi-statically configured by Radio Resource Control (RRC), or a number dynamically indicated by Physical Downlink Control Channel

(PDCCH). [00242] In example 81, the method of any of examples 76 through 80, wherein the time-domain bundling window spans one millisecond.

[00243] In example 82, the method of any of examples 76 through 81, wherein the first

[00244] In example 83, the method of any of examples 76 through 82, wherein the second DCI carries at least one of: a Hybrid Automatic Repeat Request (HARQ) process number, a DL Assignment Index (DAI), a new data indicator, a Channel Quality Indicator (CQI) indicator, or an Additional Resource Assignment (A-RA) indicator.

[00245] In example 84, the method of any of examples 76 through 83, wherein a

[00246] In example 85, the method of any of examples 76 through 84, wherein the first

[00247] In example 86, the method of any of examples 76 through 85, the operation comprising: processing one or more additional DCIs carried by one or more additional DL control regions of the time-domain bundling window.

[00248] In example 87, the method of any of examples 76 through 86, the operation comprising: establishing an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; establishing one or more Resource Block Groups (RBGs) that comprise sets of consecutive physical Resource Blocks (RBs) spanning the S-TTI region, wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator comprising a bitmap for scheduling data processing across the initial S-TTI and the one or more subsequent S-TTIs.

[00249] In example 88, the method of any of examples 76 through 87, the operation comprising: establishing an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; wherein a starting Resource Block (RB) for a Shortened Physical Downlink Shared Channel (S-PDSCH) is implicitly indicated by a lowest RB of a Shortened Physical

[00250] In example 89, the method of example 88, wherein a lowest RB of the number of consecutive RBs for the S-PDSCH is the same as a lowest RB for the S-PDCCH. [00251] Example 90 provides machine readable storage media having machine executable instructions stored thereon that, when executed, cause one or more processors to perform a method according to any of examples 76 through 89.

[00252] Example 91 provides an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node B (eNB) on a wireless network, comprising: means for establishing a time-domain bundling window spanning an initial Short Transmission Time Interval (S-TTI) and one or more subsequent S-TTIs; means for processing a first Downlink Control Information (DCI) carried by a first Downlink (DL) control region of the time- domain bundling window; means for processing a second DCI carried by a second DL control region of the time-domain bundling window; and means for determining resources scheduled for data transmission in one of the subsequent S-TTI's based upon scheduling information in the first DCI and scheduling information in the second DCI.

[00253] In example 92, the method of example 91, wherein the first DL control region is within the initial S-TTI; and wherein the second DL control region is within the one or more subsequent S-TTIs.

[00254] In example 93, the method of either of examples 91 or 92, wherein the first

[00255] In example 94, the method of example 93, wherein the second DCI carries an

[00256] In example 95, the method of any of examples 91 through 94, wherein the number of consecutive DL S-TTIs in the one or more subsequent S-TTI's is set to at least one of: a predetermined number, a number semi-statically configured by Radio Resource Control (RRC), or a number dynamically indicated by Physical Downlink Control Channel

(PDCCH).

[00257] In example 96, the method of any of examples 91 through 95, wherein the time-domain bundling window spans one millisecond.

[00258] In example 97, the method of any of examples 91 through 96, wherein the first

DCI carries at least one of: a Modulation and Coding Scheme indicator; and a Basic Resource Assignment (B-RA) indicator. [00259] In example 98, the method of any of examples 91 through 97, wherein the second DCI carries at least one of: a Hybrid Automatic Repeat Request (HARQ) process number, a DL Assignment Index (DAI), a new data indicator, a Channel Quality Indicator (CQI) indicator, or an Additional Resource Assignment (A-RA) indicator.

[00260] In example 99, the method of any of examples 91 through 98, wherein a

[00261] In example 100, the method of any of examples 91 through 99, wherein the first DL control region is one of: a UE-specific Search Space (USS), or a Common Search Space (CSS).

[00262] In example 101, the method of any of examples 91 through 100, the operation comprising: means for processing one or more additional DCIs carried by one or more additional DL control regions of the time-domain bundling window.

[00263] In example 102, the method of any of examples 91 through 101, the operation comprising: means for establishing an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; means for establishing one or more Resource Block Groups (RBGs) that comprise sets of consecutive physical Resource Blocks (RBs) spanning the S-TTI region, wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator comprising a bitmap for scheduling data processing across the initial S-TTI and the one or more subsequent S-TTIs.

[00264] In example 103, the method of any of examples 91 through 102, the operation comprising: means for establishing an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; wherein a starting Resource Block (RB) for a Shortened Physical Downlink Shared Channel (S-PDSCH) is implicitly indicated by a lowest RB of a Shortened Physical Downlink Control Channel (S-PDCCH) scheduling the S-PDSCH; and wherein an Additional Resource Assignment (A-RA) indicator carried by the second DCI indicates a number of consecutive RBs in frequency for the S-PDSCH.

[00265] In example 104, the method of example 103, wherein a lowest RB of the number of consecutive RBs for the S-PDSCH is the same as a lowest RB for the S-PDCCH.

[00266] Example 105 provides machine readable storage media having machine executable instructions that, when executed, cause one or more processors of a User

Equipment (UE) to perform an operation comprising: establish a time-domain bundling window spanning an initial Short Transmission Time Interval (S-TTI) and one or more subsequent S-TTIs; process a first Downlink Control Information (DCI) carried by a first Downlink (DL) control region of the time-domain bundling window; process a second DCI carried by a second DL control region of the time-domain bundling window; and determine resources scheduled for data transmission in one of the subsequent S-TTI's based upon scheduling information in the first DCI and scheduling information in the second DCI.

[00267] In example 106, the machine readable storage media of example 105, wherein the first DL control region is within the initial S-TTI; and wherein the second DL control region is within the one or more subsequent S-TTIs.

[00268] In example 107, the machine readable storage media of either of examples 105 or 106, wherein the first DCI carries a Basic Resource Assignment (B-RA) indicator indicating a resource allocation for a Shortened Physical Downlink Shared Channel (S- PDSCH) transmission in one of the subsequent S-TTIs; and wherein a search space for the second DCI is contained within the resource allocation for the S-PDSCH transmission.

[00269] In example 108, the machine readable storage media of example 107, wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator indicating a resource allocation for a Shortened Physical Downlink Shared Channel (S-PDSCH) transmission in one of the subsequent S-TTIs.

[00270] In example 109, the machine readable storage media of any of examples 105 through 108, wherein the number of consecutive DL S-TTIs in the one or more subsequent S- TTFs is set to at least one of: a predetermined number, a number semi-statically configured by Radio Resource Control (RRC), or a number dynamically indicated by Physical Downlink Control Channel (PDCCH).

[00271] In example 110, the machine readable storage media of any of examples 105 through 109, wherein the time-domain bundling window spans one millisecond.

[00272] In example 111, the machine readable storage media of any of examples 105 through 110, wherein the first DCI carries at least one of: a Modulation and Coding Scheme indicator; and a Basic Resource Assignment (B-RA) indicator.

[00273] In example 112, the machine readable storage media of any of examples 105 through 111, wherein the second DCI carries at least one of: a Hybrid Automatic Repeat Request (HARQ) process number, a DL Assignment Index (DAI), a new data indicator, a Channel Quality Indicator (CQI) indicator, or an Additional Resource Assignment (A-RA) indicator. [00274] In example 113, the machine readable storage media of any of examples 105 through 112, wherein a Cyclic Redundancy Check (CRC) having fewer than 16 bits is appended to the second DCI.

[00275] In example 114, the machine readable storage media of any of examples 105 through 113, wherein the first DL control region is one of: a UE-specific Search Space (USS), or a Common Search Space (CSS).

[00276] In example 115, the machine readable storage media of any of examples 105 through 114, the operation comprising: process one or more additional DCIs carried by one or more additional DL control regions of the time-domain bundling window.

[00277] In example 116, the machine readable storage media of any of examples 105 through 115, the operation comprising: establish an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; establish one or more Resource Block Groups (RBGs) that comprise sets of consecutive physical Resource Blocks (RBs) spanning the S-TTI region, wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator comprising a bitmap for scheduling data processing across the initial S-TTI and the one or more subsequent S-TTIs.

[00278] In example 117, the machine readable storage media of any of examples 105 through 116, the operation comprising: establish an S-TTI region spanning the initial S-TTI and the one or more subsequent S-TTIs, based upon a Basic Resource Assignment (B-RA) indicator carried by the first DCI; wherein a starting Resource Block (RB) for a Shortened Physical Downlink Shared Channel (S-PDSCH) is implicitly indicated by a lowest RB of a Shortened Physical Downlink Control Channel (S-PDCCH) scheduling the S-PDSCH; and wherein an Additional Resource Assignment (A-RA) indicator carried by the second DCI indicates a number of consecutive RBs in frequency for the S-PDSCH.

[00279] In example 118, the machine readable storage media of example 117, wherein a lowest RB of the number of consecutive RBs for the S-PDSCH is the same as a lowest RB for the S-PDCCH.

[00280] In example 119, the apparatus of any of examples 1 through 15, and 60 through 74, wherein the one or more processors comprise a baseband processor.

[00281] In example 120, the apparatus of any of examples 1 through 15, and 60 through 74, comprising a memory for storing instructions, the memory being coupled to the one or more processors. [00282] An abstract is provided that will allow the reader to ascertain the nature and gist of the technical disclosure. The abstract is submitted with the understanding that it will not be used to limit the scope or meaning of the claims. The following claims are hereby incorporated into the detailed description, with each claim standing on its own as a separate embodiment.

Claims

CLAIMS We claim:

1. An apparatus of an Evolved Node-B (eNB) operable to communicate with a User

Equipment (UE) on a wireless network, comprising:

one or more processors to:

establish a time-domain bundling window spanning an initial Short Transmission

Time Interval (S-TTI) and one or more subsequent S-TTIs;

generate a first Downlink Control Information (DCI) carried by a first Downlink (DL) control region of the time-domain bundling window;

generate a second DCI carried by a second DL control region of the time-domain bundling window; and

determine resources scheduled for data transmission in one of the subsequent S-TTFs based upon scheduling information in the first DCI and scheduling information in the second DCI.

2. The apparatus of claim 1, comprising a transceiver circuitry for at least one of: generating transmissions, encoding transmissions, processing transmissions, or decoding

transmissions.

3. The apparatus of either of claims 1 or 2,

wherein the first DL control region is within the initial S-TTI; and

wherein the second DL control region is within the one or more subsequent S-TTIs.

4. The apparatus of either of claims 1 or 2,

wherein the first DCI carries a Basic Resource Assignment (B-RA) indicator

indicating a resource allocation for a Shortened Physical Downlink Shared Channel (S-PDSCH) transmission in one of the subsequent S-TTIs; and wherein a search space for the second DCI is contained within the resource allocation for the S-PDSCH transmission.

5. The apparatus of claim 4, wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator indicating a resource allocation for a Shortened Physical Downlink Shared Channel (S-PDSCH) transmission in one of the subsequent S-TTIs.

6. The apparatus of either of claims 1 or 2,

wherein the number of consecutive DL S-TTIs in the one or more subsequent S-TTI's is set to at least one of: a predetermined number, a number semi-statically configured by Radio Resource Control (RRC), or a number dynamically indicated by Physical Downlink Control Channel (PDCCH).

7. Machine readable storage media having machine executable instructions that, when

executed, cause one or more processors of an Evolved Node-B (eNB) to perform an operation comprising:

establish a time-domain bundling window spanning an initial Short Transmission

Time Interval (S-TTI) and one or more subsequent S-TTIs;

determine resources scheduled for data transmission in one of the subsequent S-TTI's based upon scheduling information in the first DCI and scheduling information in the second DCI.

8. The machine readable storage media of claim 7,

wherein the first DL control region is within the initial S-TTI; and

9. The machine readable storage media of either of claims 7 or 8,

wherein the first DCI carries a Basic Resource Assignment (B-RA) indicator

10. The machine readable storage media of claim 9,

wherein the second DCI carries an Additional Resource Assignment (A-RA) indicator indicating a resource allocation for a Shortened Physical Downlink Shared Channel (S-PDSCH) transmission in one of the subsequent S-TTIs.

11. The machine readable storage media of either of claims 7 or 8,

12. The machine readable storage media of either of claims 7 or 8,

wherein the time-domain bundling window spans one millisecond.

13. An apparatus of a User Equipment (UE) operable to communicate with an Evolved

Node-B (eNB) on a wireless network, comprising:

one or more processors to:

establish a time-domain bundling window spanning an initial Short Transmission

Time Interval (S-TTI) and one or more subsequent S-TTIs;

process a first Downlink Control Information (DCI) carried by a first Downlink (DL) control region of the time-domain bundling window;

process a second DCI carried by a second DL control region of the time-domain

bundling window; and

14. The apparatus of claim 13, comprising a transceiver circuitry for at least one of:

generating transmissions, encoding transmissions, processing transmissions, or decoding transmissions.

15. The apparatus of either of claims 13 or 14,

wherein the first DL control region is within the initial S-TTI; and

16. The apparatus of either of claims 13 or 14,

wherein the first DCI carries a Basic Resource Assignment (B-RA) indicator

17. The apparatus of claim 16,

18. The apparatus of either of claims 13 or 14,

19. Machine readable storage media having machine executable instructions that, when

executed, cause one or more processors of a User Equipment (UE) to perform an operation comprising:

establish a time-domain bundling window spanning an initial Short Transmission

Time Interval (S-TTI) and one or more subsequent S-TTIs;

process a second DCI carried by a second DL control region of the time-domain

bundling window; and

20. The machine readable storage media of claim 19,

wherein the first DL control region is within the initial S-TTI; and

21. The machine readable storage media of either of claims 19 or 20,

wherein the first DCI carries a Basic Resource Assignment (B-RA) indicator

22. The machine readable storage media of claim 21,

23. The machine readable storage media of either of claims 19 or 20,

24. The machine readable storage media of either of claims 19 or 20,

wherein the time-domain bundling window spans one millisecond.