BR112016024839B1 - METHOD AND APPARATUS FOR WIRELESS COMMUNICATION AND COMPUTER READABLE MEMORY - Google Patents

Abstract

INDICATION OF MODULATION CODING SCHEME TABLES (MCS) IN LTE UPLOAD LINK. The present invention relates to methods, systems and devices for indicating a modulation coding scheme (MCS) in LTE. A user equipment (UE) can receive downlink control (DCI) information from an evolved Node B (eNB) that includes an uplink resource grant. DCIs can be configured and have a format that passes an MCS table reference. The UE may identify the MCS table reference and, based on the reference, identify an inherited MCS table or a non-inherited MCS table. The inherited MCS table can be associated with quadrature amplitude modulation (QAM) up to a first order, and the non-inherited MCS table can be associated with QAM up to a second order, with the second order being higher than the first order. order. The UE can modulate and encode information for uplink transmissions using the identified MCS table.

Description

REFERENCES

[0001] The present Patent Application claims priority of the Patent Application in the U.S. 14/617,888, by Chen et al, entitled “Modulation Coding Scheme (MCS) Indication in LTE Uplink”, filed on February 9, 2015; and Chen et al Provisional Patent Application No. 61/984,701 entitled “Modulation Coding Scheme (MCS) Indication in LTE Uplink”, filed on April 25, 2014; each of which is assigned to the present assignee.

FUNDAMENTALS OF THE INVENTION

[0002] Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcasting, and so on. These systems can be multiple access systems that are able to support communication with multiple users by sharing available system resources (eg time, frequency and power). Examples of such multiple access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, and orthogonal frequency division (OFDMA).

[0003] Generally, a wireless multiple access communication system may include numerous base stations, each of which simultaneously supports communication to multiple mobile devices. Base stations can communicate with mobile devices on upstream and downstream links. Each base station has a range of coverage, which can be called the cell coverage area. A base station can lease mobile device resources for upstream transmissions. The base station and mobile device can access a modulation coding scheme (MCS) table to determine which MCS to use uplink transmission. As wireless communication systems increase their support of additional MCSs, existing MCS tables may not include data entries that account for these additional MCSs that are supported by the communication system. Therefore, additional MCS tables may be developed, and wireless communication systems may require methods to reference multiple MCS tables. In particular, a mobile device participating in upstream communications using such additional MCSs can benefit from methods of pointing corresponding MCS tables to the mobile device.

SUMMARY OF THE INVENTION

[0004] Resources described generally refer to methods, systems, or apparatus for pointing the MCS to a user equipment (UE) for long-term evolving uplink transmissions (LTE). Generally, the UE may receive downlink control (DCI) information over a physical downlink control channel (PDCCH), for example. The DCIs may have a particular DCI format, be configured to transmit an MCS table reference, and include an uplink (UL) resource grant for the UE. The UE can receive the DCIs, determine the configuration of the DCIs to extract the MCS table reference, and use the MCS table reference to identify an MCS table from a plurality of MCS tables to use modulation and encoding UL Broadcast Services on UL Lease Resources. The UE may identify an MCS table associated with additional MCSs.

[0005] In a first set of illustrative examples, a method for wireless communications is described. The method may include: receiving, via a user equipment (UE), downlink control (DCI) information comprising an uplink (UL) resource grant to the UE, wherein the DCIs have a format of DCI and are configured to transmit a Modulation Coding Scheme (MCS) table reference; identifying an MCS table from a plurality of MCS tables based on the MCS table reference transmitted in the DCI, wherein the MCS table defines the modulation and encoding to be used for the UL transmissions on the resources granted in the UL Award; and sending one or more UL modulated and encoded transmissions according to the MCS table.

[0006] In some aspects, the plurality of MCS tables may include at least one legacy MCS table associated with quadrature amplitude modulation up to a first modulation order and a non-inherited MCS table associated with quadrature amplitude modulation up to a second order, where the second order is higher than the first order. The DCIs may transmit the MCS table reference based on a lookup space of a physical downlink control channel (PDCCH) on which the DCIs are communicated. The method may include determining whether the DCIs are included in a common search space of the PDCCH frame or a UE specific search space of the PDCCH frame. The method may include selecting a first MCS table based on the DCIs that are included in the common search space of the PDCCH frame and selecting a second MCS table based on the DCIs that are included in the UE specific search space of the PDCCH frame. PDCCH.

[0007] In some aspects, the method may include receiving a configuration from two or more advanced PDCCH resource sets (EPDCCH), and selecting a first MCS table based on the DCIs that are communicated in a first EPDCCH resource set and selecting a second MCS table based on the DCIs that are communicated in the second EPDCCH resource set.

[0008] In some aspects, the DCIs may transmit the MCS table reference based on a type of a control channel on which the DCIs are communicated. The method may include selecting a first MCS table based on DCIs that are communicated in a PDCCH frame and selecting a second MCS table based on DCIs that are communicated in an EPDCCH frame. The DCIs can transmit the MCS table reference based on a masking code used to mask the DCIs. The method may include masked DCIs with a first masking code that are associated with a first MCS table, and masked DCIs with a second masking code that are associated with a second MCS table.

[0009] In some aspects, identifying the MCS table may include identifying an MCS table index, and determining an entry of a first MCS table or a second MCS table based on the MCS table index, where the first MCS table and the second MCS table share one or more common entries. Identifying the MCS table may include identifying one or more bits in the DCI, and selecting an MCS table from the plurality of MCS tables based on one or more identified bits. The method may include determining a power compensation parameter associated with the identified MCS table, wherein a first power compensation parameter is associated with a first MCS table and a second power compensation parameter is associated with a second power compensation table. MCS. The method may include determining a transmit power of at least one of the one or more UL transmissions based on the power offset parameter.

[0010] In a second set of illustrative examples, an apparatus for wireless communications is described. The apparatus may include a processor, memory in electronic communication with the processor, and instructions that are executable by the processor. The instructions may be executable to: receive, via a user equipment (UE), downlink control (DCI) information comprising an uplink (UL) resource grant to the UE, where the DCIs have a DCI format and are configured to transmit a Modulation Coding Scheme (MCS) table reference; identifying an MCS table from a plurality of MCS tables based on the MCS table reference transmitted in the DCI, wherein the MCS table defines the modulation and encoding to be used for the UL transmissions on the resources granted in the lease from UL; and sending one or more UL modulated and encoded transmissions according to the MCS table.

[0011] In some aspects, the plurality of MCS tables may include one or more of at least one inherited MCS table associated with quadrature amplitude modulation up to a first order and a non-inherited MCS table associated with amplitude modulation in squaring up to a second order, where the second order is higher than the first order. The DCIs may transmit the MCS table reference based on a lookup space of a physical downlink control channel (PDCCH) that the DCIs are communicated over. The instructions may be further executable to determine whether the DCIs are included in a common search space of the PDCCH frame or in a UE specific search space of the PDCCH frame. Instructions may be executable to select a first MCS table based on the DCIs that are included in the common search space of the PDCCH frame and select a second MCS table based on the DCIs that are included in the UE specific search space of the PDCCH frame.

[0012] In some aspects, the DCIs may transmit an MCS table reference based on which subframe of a physical downlink control channel (PDCCH) the DCIs are communicated. Instructions may be executable for selecting a first MCS table based on the DCIs that are included in a first subframe of the PDCCH frame and selecting a second MCS table based on the DCIs that are included in the second subframe of the PDCCH frame. The DCI format can be one or more of a DCI 0 format or a DCI 4 format.

[0013] In some aspects, instructions may be executable to receive a configuration from two or more EPDCCH resource sets, and select a first MCS table based on the DCIs that are communicated in a first EPDCCH resource set, and select a second MCS table based on the DCIs that are communicated in the second EPDCCH resource set.

[0014] In some aspects, executable statements to identify an MCS table may be executable to identify an MCS table index, and determine an entry of a first MCS table or a second MCS table based on the table index of MCS, where the first MCS table and the second MCS table share one or more common entries. Instructions for identifying the MCS table may be executable for identifying one or more bits in the DCI, and selecting an MCS table from the plurality of MCS tables based on the one or more identified bits. The apparatus may include executable instructions for determining a power compensation parameter associated with the identified MCS table, wherein a first power compensation parameter is associated with a first MCS table and a second power compensation parameter is associated with a second MCS table. The apparatus may include executable instructions for determining a transmit power for at least one of the one or more UL transmissions based on the power offset parameter.

[0015] In some aspects, the apparatus may include executable instructions for determining an uplink control information (UCI) compensation parameter associated with the identified MCS table, wherein a first UCI compensation parameter is associated with a first associated MCS table and a second UCI offset parameter is associated with a second MCS table. The apparatus may include executable instructions for determining a number of resource elements to multiplex the UCIs with at least one of the one or more UL transmissions based on the UCI offset parameter. UCIs may include at least one of a hybrid automatic request retry acknowledgment (HARQ-ACK), a rating indicator (RI), or a channel quality indicator (CQI).

[0016] In some aspects, the identified MCS table may be a non-inherited MCS table associated with quadrature amplitude modulation up to 256 and the instructions may be executable to receive an indication of a quadrature amplitude modulation up to 256 for transmissions downlink (DL), the DL transmission indication being separate from the DCI.

[0017] In a third set of illustrative examples, an apparatus for wireless communications is described. The apparatus may include: means for receiving, via a user equipment (UE), downlink control (DCI) information comprising an uplink (UL) resource grant to the UE, where the DCIs have a DCI format and are configured to transmit the Modulation Coding Scheme Table (MCS) reference; means for identifying an MCS table from a plurality of MCS tables based on the MCS table reference transmitted in the DCIs, wherein the MCS table defines the modulation and encoding to be used for UL transmissions on the granted resources in the UL grant; and means for sending one or more UL transmissions modulated and encoded according to the MCS table.

[0018] In some aspects, the plurality of MCS tables may include at least one inherited MCS table associated with quadrature amplitude modulation up to a first order and a non-inherited MCS table that is associated with quadrature amplitude modulation up to a a second order, where the second order is higher than the first order. The DCIs may transmit the MCS table reference based on a lookup space of a physical downlink control channel (PDCCH) on which the DCIs are communicated. The apparatus may include means for determining whether the DCI is included in a common search space of the PDCCH frame or in a UE specific search space of the PDCCH frame. The apparatus may include means for selecting a first MCS table based on the DCIs that are included in the common search space of the PDCCH frame and selecting a second MCS table based on the DCIs that are included in the UE specific search space of the PDCCH frame. PDCCH frame. The DCI format can be one or more of a DCI 0 format or a DCI 4 format.

[0019] In some aspects, the DCIs may transmit the MCS table reference based on a type of a control channel on which the DCIs are communicated. The apparatus may include means for selecting a first MCS table based on DCIs that are communicated in a PDCCH frame and selecting a second MCS table based on DCIs that are communicated in an EPDCCH frame.

[0020] In some aspects, the apparatus may include means for receiving a configuration of two or more EPDCCH resource sets, and means for selecting a first MCS table based on the DCIs that are communicated in a first EPDCCH resource set and selecting a second MCS table based on the DCIs that are communicated in the second EPDCCH resource set.

[0021] In some aspects, the means for identifying the MCS table may include means for identifying an MCS table index, and means for determining an entry of a first MCS table or a second MCS table based on the index of MCS table, where the first MCS table and the second MCS table share one or more common entries. The means for identifying the MCS table may include means for identifying one or more bits in the DCI, and means for selecting an MCS table from the plurality of MCS tables based on the one or more identified bits.

[0022] In some aspects, the apparatus may include means for determining a power compensation parameter associated with the identified MCS table, wherein a first power compensation parameter may be associated with a first MCS table and a second parameter of power compensation can be associated with a second MCS table. The apparatus may include means for determining the transmit power for at least one of the one or more UL transmissions based on the power offset parameter. The apparatus may include means for determining an uplink control information (UCI) offset parameter associated with the identified MCS table, wherein a first UCI offset parameter may be associated with an associated first MCS table and a second UCI compensation parameter can be associated with a second MCS table.

[0023] In a fourth set of illustrative examples, the non-transient computer-readable medium for wireless communications stores instructions executable by a processor to: receive, via a user equipment (UE), downlink control information ( DCI) comprising an uplink (UL) resource grant to the UE, wherein the DCIs have a DCI format and are configured to transmit a Modulation Coding Scheme (MCS) table reference; identifying an MCS table from a plurality of MCS tables based on the MCS table reference transmitted in the DCI, wherein the MCS table defines the modulation and encoding to be used for UL transmissions on the resources granted in the lease from UL; and sending one or more UL modulated and encoded transmissions according to the MCS table.

[0024] In some aspects, the plurality of MCS tables may include at least one inherited MCS table associated with quadrature amplitude modulation up to a first order and a non-inherited MCS table associated with quadrature amplitude modulation up to a second order order, where the second order is higher than the first order. The DCIs may transmit the MCS table reference based on a lookup space of a physical downlink control channel (PDCCH) on which the DCIs are communicated. The instructions may be executable to determine whether the DCIs are included in a common search space of the PDCCH frame or in a UE specific search space of the PDCCH frame. The non-transient computer-readable medium may include executable instructions for selecting a first MCS table based on the DCIs that are included in the common search space of the PDCCH frame and selecting a second MCS table based on the DCIs that are included in the space. UE-specific lookup of the PDCCH frame.

[0025] In some aspects, the DCIs may transmit the MCS table reference based on which subframe of a physical downlink control channel (PDCCH) the DCIs are communicated. The non-transient computer-readable medium may include executable instructions for selecting a first MCS table based on the DCIs that are included in a first subframe of the PDCCH frame and selecting a second MCS table based on the DCIs that are included in the second subframe of the PDCCH frame. The DCI format can be one or more of a DCI 0 format or a DCI 4 format.

[0026] In some aspects, the DCIs may transmit the MCS table reference based on a type of a control channel on which the DCIs are communicated. The non-transient computer-readable medium may include executable instructions to select a first MCS table based on DCIs that are communicated in a PDCCH frame and select a second MCS table based on DCIs that are communicated in an EPDCCH frame. The DCIs can transmit the MCS table reference based on a masking code used to mask the DCIs. DCIs masked with a first masking code can be associated with a first MCS table, and DCIs masked with a second masking code can be associated with a second MCS table. The executable instructions for identifying the MCS table may be executable for identifying an MCS table index, and determining an entry of a first MCS table or a second MCS table based on the MCS table index, where the first MCS table and the second MCS table share one or more common entries.

[0027] In some aspects, the instructions for identifying the MCS table may be executable to identify one or more bits in the DCI, and select an MCS table from the plurality of MCS tables based on the one or more identified bits. The non-transient computer-readable medium may include executable instructions for determining a power compensation parameter associated with the identified MCS table, wherein a first power compensation parameter is associated with a first MCS table and a second power compensation parameter power is associated with a second MCS table. The non-transient computer-readable medium may include executable instructions for determining a transmit power for at least one of the one or more UL transmissions based on the power offset parameter.

[0028] In some aspects, the non-transient computer-readable medium may include executable instructions to receive a configuration of two or more sets of EPDCCH resources, and select a first MCS table based on the DCIs that are communicated in a first set of EPDCCH resources and select a second MCS table based on the DCIs that are communicated in the second EPDCCH resource set.

[0029] In some aspects, the non-transient computer-readable medium may include executable instructions to determine an uplink control information (UCI) offset parameter associated with the identified MCS table, wherein a first UCI offset parameter is associated with a first associated MCS table and a second UCI offset parameter is associated with a second MCS table. The non-transient computer-readable medium may include executable instructions for determining a number of resource elements to multiplex the UCIs with at least one of the one or more UL transmissions based on the UCI offset parameter. UCIs may include at least one of a hybrid automatic request retry acknowledgment (HARQ-ACK), a rating indicator (RI), or a channel quality indicator (CQI). The identified MCS table may be a non-inherited MCS table associated with quadrature amplitude modulation up to 256 and the instructions may be executable to receive an indication of a quadrature amplitude modulation of up to 256 for downlink (DL) transmissions, whereby the DL transmission indication is separate from the DCI.

[0030] In a fifth set of illustrative examples, a method for wireless communication may include: configuring the downlink control (DCI) information to have a format of DCI and to transmit a coding scheme table reference per modulation (MCS); sending, to a user equipment (UE), the DCI, the DCI comprising an uplink (UL) resource grant to the UE; and receiving, from the UE, one or more UL transmissions modulated and encoded according to an MCS table from a plurality of MCS tables, wherein the MCS table is identified based on the MCS table reference broadcast on DCI.

[0031] In some examples, configuring the DCI to transmit the MCS table reference may include one or more of identifying a search space of a physical downlink control channel (PDCCH) on which the DCI communicates, identifying a subframe of the PDCCH on which to communicate the DCI or identify a masking code for use to mask the DCI. The DCI format can be one or more of a DCI 0 format or a DCI 4 format.

[0032] The further scope of applicability of the described methods and apparatus will become apparent from the detailed description, claims and drawings below. The detailed description and specific examples are provided by way of illustration only, as various changes and modifications within the spirit and scope of the description will become apparent to those skilled in the art.

BRIEF DESCRIPTION OF THE DRAWINGS

[0033] A further understanding of the nature and advantages of the present disclosure can be realized with reference to the following drawings. In the accompanying Figures, similar components or features may have the same reference identification. Furthermore, several components of the same type can be distinguished by following reference identification by a dash and a second identification that distinguishes between similar components. If only the first reference identification is used in the specification, the description is applicable to any of the similar components that have the same reference identification independent of the second reference identification.

[0034] Figure 1 shows a diagram of a wireless communication system in accordance with various aspects of the present disclosure.

[0035] Figure 2 shows a block diagram of a wireless communication system in accordance with various aspects of the present disclosure.

[0036] Figure 3 shows an exemplary downlink MCS table in accordance with various aspects of the present disclosure.

[0037] Figure 4 shows an exemplary downlink CQI table in accordance with various aspects of the present disclosure.

[0038] Figures 5A and 5B show exemplary uplink MCS tables in accordance with various aspects of the present disclosure.

[0039] Figure 6 shows a flowchart for indicating the MCS in accordance with various aspects of the present disclosure.

[0040] Figure 7 shows another flowchart for indicating the MCS in accordance with various aspects of the present disclosure.

[0041] Figure 8 shows a block diagram of a device in accordance with various aspects of the present disclosure.

[0042] Figure 9 shows a block diagram of another device, in accordance with various aspects of the present disclosure.

[0043] Figure 10 shows a block diagram of an apparatus for indicating the MCS in a wireless communication device, in accordance with various aspects of the present disclosure.

[0044] Figure 11 shows a block diagram of a device in accordance with various aspects of the present disclosure.

[0045] Figure 12 shows a block diagram of another device, in accordance with various aspects of the present disclosure.

[0046] Figure 13 shows a block diagram of another apparatus for indicating the MCS in a wireless communication device, in accordance with various aspects of the present disclosure.

[0047] Figure 14 shows an exemplary method for indicating the MCS, in accordance with various aspects of the present disclosure.

[0048] Figure 15 shows another exemplary method for indicating the MCS, in accordance with various aspects of the present disclosure.

[0049] Figure 16 shows another exemplary method for indicating the MCS, in accordance with various aspects of the present disclosure.

DETAILED DESCRIPTION

[0050] Wireless communication standards can support multiple modulation coding schemes (MCSs) for uplink and downlink transmissions. In one configuration, Quadrature Phase Shift Keying (QPSK), 16 quadrature amplitude modulation (16 QAM), and 64 QAM can be examples of legacy modulation coding schemes supported by a wireless communication standard. Furthermore, a wireless communication standard can support non-legacy MCSs up to, for example, at least 256 QAM. As an example, wireless communication standards may provide for the use of multiple MCSs for downlink transmissions, and may even include fallback operations to ensure that supported configurations for 256 QAM are covered. For this, an evolved Node B (eNB) in a wireless communication system can select an MCS table suitable to use for downlink transmissions in a wireless channel. For uplink transmissions, however, separate MCSs can be used. Thus, a separate indication for a user equipment (UE) that indicates which MCS table to reference can be beneficial. Consequently, a wireless communication system can allow MCS indication methods in long-term evolution (LTE) for uplink transmissions. In this or other examples, MCSs associated with higher order modulations or higher complexity modulations can be used (eg 1024 QAM).

[0051] The described techniques and apparatus point the MCS tables to a UE for it to use to modulate and encode uplink transmissions. The UE may receive downlink control (DCI) information that it is configured to transmit and indicate which of a plurality of MCS tables the UE should use for resources provided in an uplink grant. The UE may determine the configuration of the DCIs to identify the MCS table suitable for use and send the uplink transmission modulated and encoded based on the identified MCS table. Configuring the DCIs to transmit the reference to the appropriate MCS table can take a variety of forms, (e.g., the format of the DCI, in which search space the DCIs are communicated, one or more bits in the DCIs, in which subframe which DCIs are located, the type of control channel that transmits the DCIs, a feature set index associated with the advanced physical downlink control channel (EPDCCH) if a UE is configured with two or more EPDCCH feature sets, a virtual cell ID associated with the physical uplink shared channel (PUSCH), etc.). In some examples, DCIs can be configured to reference a legacy MCS table that supports MCS schemes up to 64 QAM. In other examples, DCIs can be configured to reference a non-inherited MCS table that supports MCS schemes up to at least 256 QAM. Consequently, the eNB can send the properly configured DCIs to the UE to indicate whether 256 QAM is supported while conserving control overhead resources.

[0052] Thus, the following description provides examples, and is not limiting the scope, applicability or configuration described in the claims. Changes may be made in the function and arrangement of the elements discussed without departing from the spirit and scope of the disclosure. Multiple examples can omit, replace, or add multiple procedures or components as appropriate. For example, the methods described can be performed in a different order than described, and multiple steps can be added, omitted, or combined. Also, features described in relation to certain examples may be combined in other examples.

[0053] Referring first to Figure 1, a diagram illustrates an example of a wireless communication system 100. The wireless communication system 100 includes base stations (or cells or nodes) 105, user equipment (UEs) 115 and a core network 130. For purposes of the present disclosure, the terms "cell", "base station", and "eNB" are used interchangeably. For purposes of this disclosure, the terms “US” and “mobile device” are used interchangeably.

[0054] Base stations 105 may communicate with UEs 115 under the control of a base station controller (not shown), which may form part of the core network 130 or base stations 105 in various examples. Base stations 105 may communicate control information or user data with main network 130 via backhaul channel 132. In certain examples, base stations 105 may communicate, either directly or indirectly, with each other via return transport channel links 134, which may be wired or wireless communication links. The wireless communication system 100 can support operation on multiple carriers (waveform signals of different frequencies). Multicarrier transmitters can transmit modulated signals simultaneously on multiple carriers. For example, each communications link 125 may be a multicarrier signal modulated in accordance with the various radio technologies described above. Each modulated signal can be sent on a different carrier and can carry control information (eg reference signals, control channels, etc.), overload information, data, etc.

[0055] The base stations 105 can communicate wirelessly with the UEs 115 through one or more base station antennas. Each of the base stations 105 may provide communication coverage for a respective geographic coverage area 110. In some examples, a base station 105 may be called a transceiver base station, a radio base station, a access, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a NodeB, eNodeB (eNB), a Home NodeB, a Home eNodeB, or some other suitable terminology. The coverage area 110 for a base station 105 can be divided into sectors that make up only a portion of the coverage area (not shown). The wireless communication system 100 may include base stations 105 of different types (e.g. macro, micro or femto/pico base stations). There may be overlapping coverage areas for different technologies.

[0056] In certain examples, the wireless communication system 100 is an LTE/LTE-A network. In LTE/LTE-A networks, the term Evolved Node B (eNB) may generally be used to describe one or more of the base stations 105. The wireless communication system 100 may be a heterogeneous LTE/LTE-A network in which different types of eNBs provide coverage for various geographic regions. For example, each base station 105 can provide communication coverage for a macrocell, a picocell, a femtocell, or other cell types. A macrocell generally covers a relatively wide geographic area (for example, several kilometers in radius) and can allow unrestricted access by UEs with service subscriptions with the network provider. A picocell can generally cover a relatively smaller geographic area and can allow unrestricted access by UEs with service subscriptions with the network provider. A femtocell can also generally cover a relatively small geographic area (e.g. a household) and, in addition to unrestricted access, can also provide restricted access by UEs that have an association with the femtocell (e.g., UEs in a group closed subscriber (CSG), in-home user UEs, and the like). An eNB for a macrocell can be called a macro-eNB. An eNB for a picocell can be called a pico-eNB. And, an eNB for a femtocell can be called a femto-eNB or a starter eNB. An eNB can support one or multiple (for example, two, three, four, and the like) cells.

[0057] In one example, an eNB 105 selects from multiple MCSs to use for a transmission to a UE 115. The MCS selected may be based, at least in part, on a channel quality indicator (CQI) value reported from from the UE 115. The eNB 105 can select from a number of CQI tables to identify the table that corresponds to the CQI value received from the UE 115. The eNB 105 can also select from a number of MCS tables to identify the table from which an MCS can be identified for either a downlink transmission or an uplink transmission. The selected MCS table may be based, at least in part, on the CQI value received from the UE 115. The eNB may, in some examples, indicate a reference to a selected MCS table for the UE 115 to be used for uplink transmissions.

[0058] In another example, the mode dependent DCI can be associated with the legacy MCS table or the new MCS table based on the RRC configuration. Additionally, the DCI 1A format that schedules the PDSCH can be associated with the legacy MCS table if the DCIs are communicated in a first EPDCCH resource set, or associated with the new MCS table if the DCIs are communicated in a second one. EPDCCH feature set.

[0059] EPDCCH feature set dependent MCS table determination can be managed together or separately for DL and UL transmissions. As an example for joint management, both DCI format 0 and DCI format 1A can be associated with the legacy MCS table and mode-dependent DCIs for both DL and UL programming (for example, DCI format 2D and DCI format 4) can be associated with the legacy MCS table if DCIs are communicated in a first set of EPDCCH resources. If the DCIs are communicated in a second set of EPDCCH resources, the mode-dependent DCIs for both DL and UL programming (for example, DCI format 2D and DCI format 4) can be associated with the new DCI table. MCS. As an example for separate management, DCI format 1A can be associated with the legacy MCS and DCI format 0 can be associated with the legacy MCS table if the DCIs are communicated in a first set of EPDCCH resources. If the DCIs are communicated in a second set of EPDCCH resources, the DCI 1A format can be associated with the new MCS.

[0060] The main network 130 may communicate with the base stations 105 via a backhaul channel 132 (eg, SI, etc.). The base stations 105 may also communicate with each other, directly or indirectly, over the backhaul channel links 134 (e.g., X2, etc.) or over the backhaul channel 132 (e.g., through the mainnet 130). Wireless communication system 100 can support synchronous or asynchronous operation. For synchronous operation, base stations 105 can have similar frame timings, and transmissions from different base stations 105 can be approximately time-aligned. For asynchronous operation, base stations 105 may have different frame timings, and transmissions from different base stations 105 may not be time-aligned. The techniques described in this document can be used for both synchronous and asynchronous operations.

[0061] The communications links 125 shown in the wireless communication system 100 may include uplink (UL) transmissions from a UE 115 to a base station 105, or downlink (DL) transmissions from a base station 105 to a UE 115. Downlink transmissions can also be called forward link transmissions while uplink transmissions can also be called reverse link transmissions.

[0062] The UEs 115 are dispersed throughout the wireless communication system 100 and each UE 115 can be stationary or mobile. A UE 115 may also be referred to by those skilled in the art as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. A UE 115 can be a cell phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a tablet computer, a laptop computer, a cordless phone, a wireless local loop station (WLL) or similar. A UE 115 may be capable of communicating with macro-eNBs, pico-eNBs, femto-eNBs, relays, and the like. Furthermore, the UE 115 may have the ability to select from several MCS tables to identify the MCS that the UE 115 may use for an uplink transmission.

[0063] A UE 115 can be configured to receive DCI from a serving eNB 105 and determine the format for the DCI and the configuration of the DCI. Based on the determined format and configuration of the DCIs, the UE 115 can identify an MCS table from among a set of MCS tables for uplink transmissions. The DCIs may include an uplink resource grant for UE 115 (e.g., a physical uplink shared channel (PUSCH) time frequency resource grant). The configuration of the DCIs or the format for the DCIs can be selected to transmit a reference to the MCS table that the UE 115 should use for uplink transmissions. For example, DCIs can have a format of DCI 0 or a format of DCI 4, which indicates, at least to some degree, to the UE 115 which MCS table to select. The DCI aspects can also be configured to further indicate the MCS table for the UE 115 to select for uplink transmissions. Consequently, the DCI format and configuration can indicate the MCS table for the UE 115 to use for uplink transmissions in an LTE environment that supports various MCS schemes.

[0064] Figure 2 is a block diagram that conceptually illustrates a design of a wireless communication system 200 that includes a base station 105-a and a UE 115-a. Such wireless communication system 200 may illustrate aspects of wireless communication system 100 of Figure 1. For example, base station 105-a may be an example of one or more base stations 105 in Figure 1. UE 115 -a may be an example of one or more UEs 115 in Figure 1. Base station 105-a may be equipped with antennas 234-a to 234-x, where x is a positive integer, and UE 115-a may be equipped with antennas 252-a to 252-n, where n is a positive integer. In the wireless communication system 200, the base station 105-a may be capable of sending data over multiple communication links at the same time. Each communication link can be called a “layer” and the “classification” of the communication link can indicate the number of layers used for communication. For example, in a 2x2 multiple input/multiple output (MIMO) system where base station 105-a transmits two “layers”, the communication link classification between base station 105-a and UE 115-a is two.

[0065] At the base station 105-a, a broadcast processor 220 may receive data from a data source and control information from a controller/processor 240. The control information may be for the broadcast channel (PBCH), physical control format indicator channel (PCFICH), physical hybrid ARQ indicator channel (PHICH), physical downlink control channel (PDCCH), etc. Stream processor 220 may process the data (e.g., encoding and symbol map) and control information to obtain data symbols and control symbols, respectively. Stream processor 220 may also generate reference symbols and a cell-specific reference signal. A transmit (TX) MIMO processor 230 can perform spatial processing (e.g., precoding) on data symbols, control symbols, or reference symbols, if applicable, and can provide output symbol streams to the modulators/demodulators 232-a to 232-x. Each modulator/demodulator 232 can process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator/demodulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink (DL) signal. In one example, DL signals from modulators/demodulators 232-a through 232-x may be transmitted through antennas 234-a through 234-x, respectively.

[0066] At UE 115-a, UE antennas 252-a to 252-n can receive DL signals from base station 105-a and can provide the received signals to modulators/demodulators 254-a to 254-n , respectively. Each modulator/demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples. Each modulator/demodulator 254 can further process the input samples (eg, for OFDM, etc.) to obtain the received symbols. A MIMO detector 256 may obtain the received symbols from all modulators/demodulators 254-a to 254-n, perform MIMO detection on the received symbols, if applicable, and provide the detected symbols. A receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data to UE 115-a for an input data, and provide decoded control information to a controller/processor 280 or memory. 282.

[0067] In the uplink (UL), at UE 115-a, a transmission processor 264 can receive and process data from a data source. Stream processor 264 may also generate reference symbols for a reference signal. Symbols from transmit processor 264 may be pre-encoded by transmit MIMO processor 266, if applicable, further processed by modulators/demodulators 254-a to 254-n (e.g., for single carrier (SC)-FDMA, etc.), and be transmitted to the base station 105-a according to the transmission parameters received from the base station 105-a. At base station 105-a, UL signals from UE 115-a may be received by antennas 234, processed by modulators/demodulators 232, detected by a MIMO detector 236, if applicable, and further processed by a signal processor. receiver 238. The receiver processor 238 may provide decoded data to a data input and to the controller/processor 240. The components of the UE 115-a may, individually or collectively, be implemented on one or more Application Specific Integrated Circuits ( ASICs) adapted to perform some or all of the applicable functions in hardware. Each of the observed modules can be a means for performing one or more functions related to the operation of the wireless communication system 200. Similarly, base station components 105-a can, individually or collectively, be deployed in one or more more ASICs tailored to perform some or all of the applicable functions in hardware. Each of the observed components can be a means to perform one or more functions related to the operation of the wireless communication system 200.

[0068] In one configuration, UE 115-a includes means for receiving a reference to an MCS table to be used for uplink transmissions and sending uplink transmissions modulated and encoded based on the selected MCS table. UE 115-a may also include means for receiving DCI that include an uplink resource grant. UE 115-a may include, for example, means for determining a configuration of the DCIs, as well as the format for the DCIs. UE 115-a may include, for example, means for identifying an MCS table from a plurality of MCS tables based on configuration and format for the DCIs. The UE 115-a may include, in another example, means for sending uplink transmissions that are modulated and encoded according to the identified MCS table. In one aspect, the aforementioned means may be the controller/processor 280, the memory 282, the transmit processor 264, the receive processor 258, the modulators/demodulators 254 and the antennas 252 of the UE 115-a configured to perform the functions mentioned above described in more detail below.

[0069] In one embodiment, the eNB 105-a includes means for configuring the DCI to have a DCI format and for transmitting an MCS table reference. In some cases, the DCI format may be predefined. The eNB 105-a may also include means for sending the DCIs to the UE 115-a, where the DCIs comprise an uplink resource grant to the UE 115-a. The eNB 105-a may include, for example, means for receiving, from the UE 115-a, one or more uplink transmissions modulated and encoded according to an MCS table from a plurality of MCS tables, wherein the MCS table is identified based on the MCS table reference transmitted in the DCIs. In one aspect, the aforementioned means may be the controller/processor 240, the memory 242, the transmit processor 224, the receive processor 238, the modulators/demodulators 232 and the antennas 234 of the eNB 105-a configured to perform the functions mentioned above and described in more detail below.

[0070] Figure 3 shows the diagram 300 of an exemplary downlink MCS table 305, in accordance with various aspects of the present disclosure. Downlink MCS table 305 may be an example of a downlink MCS table used for downlink transmissions between a UE 115 and an eNB 105 of Figure 1 or 2. Downlink MCS table 305 may use five bits to represent up to 32 MCSs to choose from downlink transmissions. The MCS table 305 may include transport block size lookup indexes as well as the modulation order to be used for the corresponding MCSs. The MCS table 305 may be based on a 5-bit MCS and may include a list of MCS indices from 0 to 31. Each index may correspond to at least one modulation scheme to be used for a transmission. In some examples, MCS indices 0 through 28 might indicate MCS schemes for new transmissions or retransmissions, whereas indices 29 through 31 might provide MCS schemes for retransmissions. In addition, each MCS index can be mapped to at least one Transport Block Size (TBS) lookup index. The TBS lookup index can indicate a size of a transport block to be transmitted using the corresponding MCS. The mapping between MCS index and TBS index cannot be a one-to-one correspondence mapping, (for example, both MCS index 9 and 10 map to TBS index 9). In the MCS table 305, the modulation order can support up to 64 QAM modulation (ie modulation order 6). According to various wireless communication standards, downlink MCS tables supporting up to 256 QAM can also be provided.

[0071] Figure 4 shows a diagram 400 of an exemplary CQI report table 405, in accordance with various aspects of the present disclosure. The CQI report table 405 can be received by an eNB 105 from a UE 115 (of Figure 1 or 2) and used to identify a CQI value for a wireless channel. The CQI value can then be used to select a particular MCS to use for a wireless channel transmission. CQI report table 405 may represent a CQI value using four bits. A CQI table can include a listing of CQI indices that correspond to 16 possible CQI values (if four bits are used to represent the CQI value). Each CQI index value can be mapped into additional data that can be used to select an MCS.

[0072] In LTE Version 12, 256 QAM is supported for downlink operations. Therefore, Version 12 defines the new CQI tables to support channel state information (CSI) feedback with 256 QAM inputs. Version 12 also defines new MCS tables to support PDSCH scheduling with 256 QAM. Additionally, new TBS tables are also defined, so that higher TBS (thus higher peak rate) can be supported. Support of 256 QAM for downlink operations can be motivated by the deployment of small cells, where a UE can experience favorable channel conditions.

[0073] However, the downlink channel/interference conditions experienced by a UE can be very different from the uplink channel/interference conditions for the UE. For downlink 256 QAM support, it is reasonable to associate compact 1A DCI format to legacy MCS table and consider downlink transmission mode dependent DCI to indicate downlink 256 QAM operation. This is because if a physical downlink shared channel (PDSCH) supports 256 QAM, it is reasonable to assume that downlink channel conditions are quite favorable that DCI overhead is not a significant concern. As a result, it may be reasonable not to have the DCI 1A format associated with 256 QAM. Instead, the DCI 1A format can be associated with the legacy MCS table to be used for fallback operations (ie, consider potential ambiguity during 256 QAM reconfiguration). However, if 256 QAM is enabled for uplink, there is no guarantee that downlink channel/interference conditions are favorable as control channel overhead is still not a concern.

[0074] Figures 5A and 5b show diagrams 500-a and 500-b of exemplary uplink MCS tables 505 and 510, respectively. Uplink MCS tables 505 and 510 may be examples of multiple MCS tables described in accordance with various aspects of the present disclosure. A UE 115 (of Figure 1 or 2) can identify one of the MCS tables to determine modulation and encoding for uplink transmissions according to various aspects. The identification of the MCS table by the UE 115 can be facilitated by an indicator received from an eNB 105 (of Figure 1 or 2).

[0075] In some examples, uplink MCS table 505 may be an example of a legacy MCS table that uses five bits to represent up to 32 MCSs to choose from for uplink transmissions. Uplink MCS table 505 may include transport block size lookup indices as well as the modulation order to be used for the corresponding MCSs. The mapping between the MCS index and the TBS index might not be a one-to-one mapping (for example, both MCS index 9 and 10 map to TBS index 9). In the uplink MCS table 505, the modulation order can support modulation of up to 64 QAM (ie, modulation order 6). In some examples, the modulation order can be greater than 64 QAM.

[0076] Uplink MCS table 510 may be an example of a non-inherited MCS table that supports higher order modulation (for example, modulation order 8 that supports 256 QAM). Uplink MCS table 510 may also use 5 bits to represent up to 32 MCSs to choose from for uplink transmissions. At least a portion of the uplink MCS table 510 may overlap at least a portion of the uplink MCS table 505 for lower order modulation or TBS indices. Uplink MCS table 510 can be used to support 256 QAM through higher order modulation (eg, modulation order 8). MCS tables 505 and 510 may further include redundancy versions associated with retransmissions where each subsequent retransmission reduces the effective code rate through incremental redundancy.

[0077] Figure 6 shows a diagram 600 conceptually illustrating an example of communications between a UE 115-b and an eNB 105-b, in accordance with aspects of the present disclosure. UE 115-b may be an example of the UEs 115 described with respect to Figure 1 or 2. eNB 105-b may be an example of the base stations 105 described with respect to Figure 1 or 2. Generally, Figure 6 illustrates a method for indicating the uplink MCS to UE 115-b.

[0078] At 605, eNB 105-b may send DCI to UE 115-b. The eNB 105-b can select a format for the DCIs and configure the DCIs to transmit a reference to an MCS table for uplink transmissions. In some cases, the DCI format may be predefined. DCIs may include a grant of uplink resources to UE 115-b for use for uplink transmissions. DCIs may be communicated to UE 115-b through one or more subframes of a frame on a PDCCH channel. In some examples, the eNB 105-b may select a DCI format 0 or a DCI format 4 for the DCIs, to indicate that the DCIs are configured, at least in some respects, to support higher order modulation. In other aspects, the eNB 105-b can select a format of DCI 0 for the DCIs (i.e., the format of DCI 0 can be associated with a legacy uplink MCS table and a non-inherited uplink MCS table ). Additionally or alternatively, the eNB 105-b may configure the DCIs to transmit a reference to an MCS table to the UE 115-b. For example, the eNB 105-b can configure DCIs by selecting a search space from a frame of a PDCCH to transmit the reference, selecting one or more bits in the DCIs to transmit the reference, selecting a subframe from a frame of a PDCCH to transmit the reference, select a control channel type (e.g. (E)-PDCCH advanced versus PDCCH) to transmit the reference, select a feature set index associated with the EPDCCH if a UE is configured with two or more EPDCCH resource sets, select a virtual cell ID associated with the PUSCH, select a particular masking code to mask the DCI to transmit the reference or combinations thereof. Consequently, the DCIs can have a predefined format and configuration for transmitting the reference to an uplink MCS table to the UE 115-b.

[0079] At 610, the UE 115-b can identify an uplink MCS table based on the DCIs. In some instances, the UE 115-b may determine the format for the DCIs, as well as the configuration of the DCIs (eg, DCI format 0 or 4, common or UE-specific search space, etc.). Based on the format or configuration of the DCIs, the UE 115-b can identify and select an MCS table from multiple MCS tables for uplink transmissions. For example, the UE 115-b can select an MCS table associated with the modulation and coding of up to 64 QAM if the DCIs are in a first predefined format and are configured according to a first configuration. In another example, the UE 115-b can select an MCS table associated with up to at least 256 QAM if the DCIs are in a second predefined format and are configured according to a second configuration.

[0080] At 615, the UE 115-b may send one or more uplink transmissions 620 to the eNB 105b. The uplink transmissions may be modulated and encoded according to the identified uplink MCS table. Uplink transmissions can be modulated and encoded using up to at least 256 QAM, depending on the identified uplink MCS table.

[0081] Figure 7 shows a diagram 700 conceptually illustrating an example of communication between a UE 115-c and an eNB 105-c, in accordance with an aspect of the present disclosure. UE 115-c may be an example of the UEs 115 described with respect to Figures 1, 2 or 6. The eNB 105-c may be an example of the base stations 105 described with respect to Figure 1 or 2 or the eNB 105 described with reference to Figure 6 . Generally, Figure 7 illustrates a process for indicating an uplink MCS lookup table for uplink transmissions.

[0082] At 705, the eNB 105-c may send DCI to the UE 115-c. The eNB 105-b can select a format for the DCIs and configure the DCIs to transmit a reference to an MCS table for uplink transmissions. In some cases, the DCI format may be predefined. DCIs may include a grant of uplink resources to UE 115-b for use for uplink transmissions.

[0083] At 710, the UE 115-c may determine a DCI configuration to identify an MCS table reference. In some examples, the UE 115-c can determine whether the format of the DCI is a format of DCI 0 or a format of DCI 4 to determine the configuration of the DCI to identify the MCS table reference. Additionally or alternatively, the UE 115-c may determine whether the DCIs are communicated in a common lookup space or a UE specific lookup space to determine the configuration of the DCIs to identify the MCS table reference. According to other aspects, the UE 115-c can determine the configuration of the DCIs to identify the MCS table reference by determining which subframe of a frame of a PDCCH transmits the DCIs, one or more bits in the DCIs, which type of control channel (e.g. E-PDCCH versus PDCCH) transmits the DCI, a feature set index associated with the EPDCCH if a UE is configured with two or more EPDCCH feature sets, a virtual cell ID associated with the PUSCH, which masking code is used to mask the DCI or combinations thereof. Consequently, the UE 115-c can determine the configuration of the DCIs to identify the MCS table reference. At 715, the UE 115-c can identify an uplink MCS table based on the MCS table reference. In some examples, UE 115-c may identify and select an MCS table from multiple MCS tables for uplink transmissions. The UE 115-c can identify the uplink MCS table based on the reference determined based on the DCI configuration. The UE 115-c can select an MCS table associated with the modulation and coding of up to 64 QAM if a first MCS table reference is identified through the DCIs. In another example, the UE 115-c can select an MCS table associated with at least modulation and coding of up to 256 QAM if a second MCS table reference is identified via the DCIs

[0084] At 720, the UE 115-c may send one or more uplink transmissions 725 to the eNB 105-c. The uplink transmissions may be modulated and encoded according to the identified uplink MCS table. Uplink transmissions can be modulated and encoded using up to at least 256 QAM, depending on the identified uplink MCS table.

[0085] Figure 8 shows a block diagram 800 of a device 805 according to various examples. In some examples, device 805 may illustrate aspects of one of the UEs 115 of Figure 1, 2, 6, or 7. Device 805 may include a receiver 810, an MCS table identification module 815, and a transmitter 820. one of these components can be in communication with each other, either directly or indirectly.

[0086] Receiver 810 may receive information, such as packets, user data, or control information associated with various information channels (eg, control channels, data channels, etc.). Receiver 810 can be configured to operate using a single antenna, or it can be configured to employ reception diversity techniques using a plurality of antennas (not shown). Receiver 810 may receive the various information channels over a primary carrier associated with a primary cell (e.g., an eNB server 105) and one or more secondary carriers associated with secondary cells. Information may be passed to and from the MCS Table Identification module 815, the transmitter 820, and to other device components 805.

[0087] Transmitter 820 may transmit one or more signals received from other components of device 805. Transmitter 820 may transmit information over a primary carrier associated with a primary cell and one or more secondary carriers associated with secondary cells. In some examples, transmitter 820 can be collocated with receiver 810 in a transceiver. Transmitter 820 can be configured to operate using a single antenna, or it can be configured to employ transmission diversity techniques using a plurality of antennas (not shown).

[0088] The MCS table identification module 815 can manage the identification of an MCS table, among a plurality of MCS tables, for uplink transmissions. In some examples, device 805 may receive DCI from a server eNB 105 through receiver 810 and MCS table identification module 815 may be configured to parse the DCI to extrapolate an MCS table reference. The MCS table reference may indicate one of the MCS tables to be used for uplink transmissions. The MCS table identification module 815 can parse the DCIs to determine the MCS table reference by determining a format for the DCIs and a configuration of the DCIs. The DCI format and DCI configuration may indicate a legacy MCS table for uplink transmissions using lowest order modulation (for example, modulation order 6 for 64 QAM) or it may indicate an MCS table not inherited for uplink transmissions using higher order modulation (for example, modulation order 8 for 256 QAM). MCS table identification module 815 can, alone or in combination with transmitter 820, modulate and encode information for uplink transmissions to be sent to server eNB 105 or other eNBs.

[0089] Alternatively or additionally, the non-inherited MCS table can be designed so that it shares a common set of entries with the inherited MCS table. As an example, a set of MCS indexes {k1 , k2, , kn} in the non-inherited MCS table has the same definition as a set of MCS indexes {k1 , k2, , kn} in the inherited MCS table. The set of MCS indexes may not be contiguous indexes. As an example, the set of MCS indices might be {2, 4, 6, 8, 10, 12, 14, 15, 16, 17, , 31}, where each of the MCS indices has the same definition in legacy MCS table and the non-inherited MCS table. For example, an MCS index 2 in both the legacy MCS table and the non-inherited MCS table is defined to map to QPSK (modulation order 2), TBS index 2, and redundancy version 0. With this arrangement, the operation fallback can be supported. That is, an eNB can use an MCS index in the MCS index set to communicate with the UE without any ambiguity during Radio Resource Control (RC) reconfiguration.

[0090] Figure 9 shows a block diagram 900 of an 805-a device according to various examples. In some examples, device 805-a may illustrate aspects of one of UEs 115 of Figure 1, 2, 6, or 7, or device 805 of Figure 8. Device 805-a may include a receiver 810-a, a module MCS table ID 815-a, and a transmitter 820-a. each of these components can be in communication with each other, either directly or indirectly.

[0091] The 810-a receiver can receive information such as packets, user data, or control information associated with various information channels (eg, control channels, data channels, etc.). Receiver 810-a can be configured to operate using a single antenna, or it can be configured to employ reception diversity techniques using a plurality of antennas (not shown). Receiver 810-a may receive the various information channels over a primary carrier associated with a primary cell (e.g., an eNB server 105) and one or more secondary carriers associated with secondary cells. Information may be passed to and from the 815-a MCS Table Identification module, the 820-a transmitter, and other components of the 805-a device.

[0092] The transmitter 820-a may transmit one or more signals received from other components of the device 805-a. Transmitter 820-a may transmit information over a primary carrier associated with a primary cell and one or more secondary carriers associated with secondary cells. In some examples, transmitter 820-a may be collocated with receiver 810-a in a transceiver. Transmitter 820-a can be configured to operate using a single antenna, or it can be configured to employ transmission diversity techniques using a plurality of antennas (not shown).

[0093] The MCS table identification module 815-a can manage the identification of an MCS table, among a plurality of MCS tables, for uplink transmissions and comprises a DCI configuration module 910, a MCS table 915, and an uplink transmission module 920. In some examples, device 805-a may receive DCI from an eNB server 105 through receiver 810-a, and DCI configuration module 910 may be configured to parse the DCI to extract a table reference from the MCS. The MCS table reference may indicate one of the MCS tables to be used for uplink transmissions. The DCI configuration module 910 can parse the DCIs to determine the MCS table reference by determining a format for the DCIs and a configuration of the DCIs.

[0094] In some examples, the DCI configuration module 910 may determine whether the DCI format is a DCI format 0 or a DCI format 4 to determine the DCI configuration to identify the MCS table reference. In some examples, a DCI format 0 may be associated with an MCS table that supports at least 256 QAM uplink transmissions over a physical uplink shared channel (PUSCH). Accordingly, the DCI configuration module 910 can determine that if the DCIs have a format of DCI format 0, then the MCS table reference points to a non-inherited MCS table that supports higher order modulation. In other respects, the DCI 0 format can also be associated with legacy MCS tables. The DCI Configuration Module 910 can be configured to analyze other aspects of the DCI configuration to determine the MCS table reference.

[0095] In one example, the DCI configuration module 910 may determine in which search space (or decoding candidate) DCIs are communicated to identify the MCS table reference. If the DCIs have a format of DCI 0 and are communicated in a common lookup space, the DCI configuration module 910 can determine that the MCS table reference is associated with a legacy MCS table. If the DCIs have a format of DCI 0 and are communicated in a UE specific lookup space, the DCI configuration module 910 can determine that the MCS table reference is associated with a non-inherited MCS table and that transmissions of uplink can support 256 QAM.

[0096] In one example, the DCI configuration module 910 may determine from one or more bits in the DCI to identify the MCS table reference. As an example, it is assumed that there is a bit in the DCI to identify the MCS table reference. If the bit in the DCI is 0, the DCI configuration module 910 can determine that the MCS table reference is associated with a legacy MCS table. If the bit in the DCI is 1, the DCI configuration module 910 can determine that the MCS table reference is associated with a non-inherited MCS table and that uplink transmissions can support 256 QAM.

[0097] In another example, the DCI configuration module 910 can determine in which subframe the DCIs are communicated to identify the MCS table reference. If the DCIs have a format of DCI 0 and are communicated in a first subframe, the MCS table reference can be associated with a legacy MCS table. If the DCIs have a format of DCI 0 and are communicated in a second subframe, the MCS table reference can be associated with a non-inherited MCS table that can provide support for uplink transmissions of at least 256 QAM.

[0098] In another example, the DCI 910 configuration module may determine that the power control loop is associated with PUSCH transmissions. If two uplink power control loops are used, the DCI configuration module 910 can determine whether scheduled PUSCH transmissions use the first uplink power control loop, and if so, that the power table reference MCS is associated with a legacy MCS table. If the scheduled PUSCH transmissions use the second power control loop, the DCI configuration module 910 can determine that the MCS table reference is associated with a non-inherited MCS table and supports at least 256 QAM.

[0099] In another example, the DCI configuration module 910 may determine a type of control channel used to transmit the DCIs. If the DCIs have a format of DCI 0 and are communicated on a PDCCH, the DCI configuration module 910 may determine that the MCS table reference is associated with a legacy MCS table. If the DCIs have a format of DCI 0 and are communicated on an EPDCCH, the DCI configuration module 910 can determine that the MCS table reference is associated with a non-inherited MCS table and supports at least 256 QAM.

[0100] In another example, the DCI configuration module 910 may determine a set of resource indices for the EPDCCH used to transmit the DCI if the UE is configured with two or more sets of EPDCCH resources. As an example, a UE can be configured with two EPDCCH feature sets. If the DCIs are communicated in the first set of EPDCCH resources, the DCI configuration module 910 may determine that the MCS table reference is associated with a legacy MCS table. If the DCIs are communicated on the second EPDCCH resource set, the DCI configuration module 910 can determine that the MCS table reference is associated with a non-inherited MCS table and supports at least 256 QAM. Note that EPDCCH feature set dependent MCS table determination may be applicable to all DCI formats. Alternatively, EPDCCH feature set dependent MCS table determination may be applicable to some DCI formats but not others. As an example, the same may apply to DCI format 4, but not to DCI format 0. Note that since two or more sets of EPDCCH resources may overlap, there may be some cases where the UE does not are you sure which set of EPDCCH resources the DCIs come from. In order to resolve the potential ambiguity in such cases, a predetermined rule can be defined. For example, for such cases, the MCS table reference can be based on the first set of EPDCCH resources. Note also that EPDCCH resource set dependent MCS table determination can be applicable for both uplink and downlink transmissions. As an example, the DCI format 1A can be associated with the legacy MCS table, which DCI format is dependent on so that programming the PDSCH can be associated with the legacy MCS table if the DCIs are communicated in a first EPDCCH resource set , although it can be associated with the new MCS table if the DCIs are communicated in a second set of EPDCCH resources.

[0101] In another example, the DCI configuration module 910 may determine a virtual cell ID associated with the PUSCH if the UE is configured with two or more virtual cell IDs. As an example, a UE is configured with two virtual cell IDs. If the DCIs indicate the first virtual cell ID for the PUSCH, the DCI configuration module 910 can determine that the MCS table reference is associated with a legacy MCS table. If the DCIs indicate the second virtual cell ID for the PUSCH, the DCI configuration module 910 can determine that the MCS table reference is associated with a non-inherited MCS table and supports at least 256 QAM. Note also that virtual cell ID dependent MCS table determination can be applicable for both uplink and downlink transmissions. As an example, the DCI format 1A can be associated with the legacy MCS table, which DCI format is dependent on so that programming the PDSCH can be associated with the legacy MCS table if the DCIs indicate a first virtual cell ID for the PDSCH , although it can be associated with the new MCS table if the DCIs indicate a second virtual cell ID for the PDSCH.

[0102] In another example, the DCI configuration module 910 may determine a masking code used to mask the DCI to identify the MCS table reference. If a first masking code is used to mask the DCIs, the DCI configuration module 910 can determine that an MCS table reference is associated with a legacy MCS table. If a second masking code is used to mask the DCIs, the DCI configuration module 910 can determine that the MCS table reference is associated with a non-inherited MCS table and supports at least 256 QAM.

[0103] It should be understood that other types of DCI format may be used in addition to the other configuration parameters described above to transmit the MCS table reference. As an example, DCI format 4 can also be used as a DCI format, at least in part, to configure the DCI to transmit the MCS table reference. Consequently, indication of support for at least 256 QAM can be enabled while DCI format 0 can still be used for fallback operations. For example, such fallback operations can be used in operations where, if there is any ambiguity during radio resource control (RRC) configuration (or reconfiguration) messages if at least 256 QAM is supported, the eNB can still communicate with the 805-a device in a way that is preserved before and after RRC (re)configuration. As an example, if the format of DCI 0 that is communicated in a common search space is associated with the legacy MCS table, and there is ambiguity regarding support of at least 256 QAM during RRC configuration, the eNB can be converted and use the format of DCI 0 communicated in a common search space to communicate with the 805-a.a device. MCS table module 915 may exchange information with DCI configuration module 910 to identify which MCS table, out of a plurality of MCS tables, should be used for uplink transmissions. The MCS table module 915 can receive the MCS table reference, for example, and identify whether a legacy MCS table or a non-legacy table is to be used for uplink transmissions. B. uplink transmission module 920 may communicate with DCI configuration module 910, MCS table module 915 or transmitter 820-a to modulate and encode uplink transmissions according to the MCS table. If the MCS table is a legacy MCS table, the uplink transmission module 920 can modulate and encode the uplink transmissions up to a modulation order of 6. If the MCS table is a non-inherited MCS table, uplink transmission module 920 can modulate and encode the uplink transmissions to a modulation order of at least 8.

[0104] According to still other aspects, the DCI configuration module 910, the MCS table module 915 or the uplink transmission module 920 can be configured, individually or collectively, to identify or determine a parameter associated with the power control for uplink transmissions on the PUSCH. For example, for legacy MCS tables, power control for uplink transmissions on the PUSCH can be based on the MCS, where a power offset setting for a UE can be MCS-specific. For example, the power offset can be determined on a one resource element per bit (BPRE) basis. BPRE generally reflects the uplink spectral efficiency, a fixed parameter Ks when data is communicated on the PUSCH. A formula defining such power compensation can be:

[0105] where ΔTF,c (i) is the power compensation and Ks is the fixed parameter. The modules can be configured to identify that when the MCS table identified for uplink transmissions is a legacy MCS table, the fixed parameter can be 1.25. However, if the MCS table identified for uplink transmissions is a non-inherited MCS table and supports at least 256 QAM, a different fixed parameter may be selected or identified which is associated with such higher order modulation (i.e. , considers the spectral efficiency offered by at least 256 QAM).

[0106] According to yet another aspect, the DCI configuration module 910, the MCS table module 915 or the uplink transmission module 920 can be configured, individually or collectively, to identify or determine a compensation associated with the uplink control (UCI) information that is communicated over the PUSCH. Generally, when the UCIs are communicated through the PUSCH, the amount of resources allocated in the UCIs can be associated with the PUSCH parameters and a semi-static compensation that is configured for the UE independently of the hybrid automatic request retry acknowledgment (HARQ-ACK) , rating indicator (RI), CQI, respectively. Typically, the semi-static compensation is independent of the MCS indices. When the MCS table is a non-legacy MCS table and supports at least 256 QAM, the modules mentioned above can determine or identify a separate offset set for at least some UCI types. Such new offsets can be set for the non-inherited MCS table or be set for MCS entries mapped to at least 256 QAM.

[0107] According to yet another aspect, the reference CQI table can be associated with the DCI configuration module 910. Generally, for aperiodic channel state information (CSI) feedback, the DCI configuration can transmit the reference to the appropriate CQI table and it can take a variety of forms (e.g. the format of the DCI, the search space in which the DCIs are communicated, one or more bits in the DCIs, the subframe in which the DCIs are located, the type of control channel transmitting the DCIs, a feature set index associated with the EPDCCH if a UE is configured with two or more EPDCCH feature sets, etc.). In some examples, DCIs can be configured to reference a legacy CQI table that supports up to 64 QAM CQI schemes. In other examples, DCIs can be configured to reference a non-inherited CQI table that supports CQI schemes up to at least 256 QAM. Consequently, the eNB can send the properly configured DCIs to the UE to indicate whether 256 QAM is supported while conserving control overhead resources.

[0108] Figure 10 shows a block diagram 1000 of an apparatus 1005 according to various examples. Appliance 1005 can have any of a variety of configurations, such as those of a computer (e.g., a laptop-type computer, a netbook-type computer, a tablet-type computer, etc.), a cell phone, a PDA, a smartphone, a digital video recorder (DVR), an internet device, a game console, an electronic player, etc. Apparatus 1005 may have an internal power supply (not shown), such as a small battery, to facilitate mobile operation. In some examples, apparatus 1005 may be an example of one of UEs 115 of Figure 1, 2, 6 or 7 or devices 805 of Figure 8 or 9. a. apparatus 1005 may include components for generally two-way voice or data communication, and may include a processor 1010, memory 1015, a transceiver 1020, at least one antenna 1025, and an MCS table identification module 815-b. The MCS 815-b table identification module may be an example of one or more aspects of the MCS 815 table identification modules of Figure 8 or 9. Some or all of these components may communicate with other components, either directly or indirectly , via one or more 1045.b buses. transceiver 1020 may be coupled (eg, connected) to antenna 1025. Transceiver 1020 may be configured to communicate bi-directionally with one or more other devices via antenna 1025, and may include a modem configured to modulate/demodulate transmitted/received packets via antenna 1025. Devices with which transceiver 1020 communicates may include access points (e.g., LTE eNBs, wireless local area network (WLAN) access points (APs), etc.), devices 805 or UEs 115 .w. MCS table identification module 815b can be configured to identify an MCS table for use for uplink transmissions. Generally, the MCS Table Identification module 815-b can be configured to receive DCI, determine a format for the DCI and a setting for the DCI to identify an MCS table reference. Based on the MCS table reference, the MCS table identification module 815-b can select or identify an MCS table from a plurality of MCS tables. The identified MCS table can be a first MCS table supporting up to 6 inherited modulation orders or a second MCS table supporting up to at least 8 modulation orders.

[0109] Memory 1015 may include random access memory (RAM) or read-only memory (ROM). Memory 1015 may store computer-readable, computer-executable software (SW) code 1035 containing instructions that are configured to, when executed, cause processor 1010 or MCS table identification module 815-b to perform a or more of the functions described herein to identify an MCS table to be used for uplink transmissions in LTE. Alternatively, software code 1035 may not be directly executable by processor 1010, but be configured to cause apparatus 1005 (e.g., when compiled or executed) to perform one or more of the functions described herein.a. processor 1010 may include an intelligent hardware device (e.g., a CPU, a microcontroller, an ASIC, etc.). Processor 1010 can process information received through transceiver 1020 from antenna 1025, and can also process information to be transmitted from antenna 1025 through transceiver 1020. Processor 1010 can handle, alone or in connection with one or all of the software code 1035 and MCS Table Identification module 815-b, various aspects of managing the MCS Table Identification in apparatus 1005 as described above.

[0110] The components of the device 1005 can be deployed, individually or collectively, with the use of one or more ASICs adapted to perform some or all of the applicable functions in hardware. Alternatively, the functions may be performed by one or more other processing units (or cores), one or more integrated circuits. In other examples, other types of integrated circuits may be used (eg Structured/Platform ASICs, FPGAs and other semi-custom ICs), which may be programmed in any manner known in the art. The functions of each unit can also be implemented, in whole or in part, with instructions embedded in a memory, formatted to be executed by one or more processors of general or specific application.

[0111] Figure 11 shows a block diagram 1100 of a device 1105, according to various examples. In some examples, device 1105 may illustrate aspects of one of the eNBs 105 of Figure 1, 2, 6, or 7. Device 1105 may include receiver 1110, an MCS indicating module 1115, and a transmitter 1120. can stay in communication with each other, both directly and indirectly.

[0112] The components of the device 1105 can be implanted, individually or collectively, with the use of one or more application-specific integrated circuits (ASICs) adapted to perform some or all of the applicable functions in hardware. Alternatively, functions may be performed by one or more other processing units (or cores) on one or more integrated circuits. In other examples, other types of integrated circuits may be used (for example, Structured/Platform ASICs, Field Programmable Gate Arrays (FPGAs), and other Semi-Custom ICs), which may be programmed in any manner known in the art. The functions of each unit can also be implemented, in whole or in part, with instructions embedded in a memory, formatted to be executed by one or more processors of general or specific application. The. Receiver 1110 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, etc.). Receiver 1110 can be configured to operate using a single antenna, or it can be configured to employ reception diversity techniques using a plurality of antennas (not shown). In some examples, radio frequency spectrum may be used for LTE/LTE-A communications, as described, for example, with reference to either Figure 1 or 2. Receiver 1110 may be used to receive various types of data or audio signals. control (i.e., transmissions) over one or more communication links of a wireless communication system, such as one or more communication links 125 of the wireless communication system 100 or 200 described with reference to Figure 1 or 2, respectively . Examples of the types of data or control signals received by receiver 1110 include uplink transmission over both the PUCCH and the PUSCH. Information may be passed to from the MCS indicating module 1115, the transmitter 1120 and to other device components 1105. b. Transmitter 1120 may transmit one or more signals received from other components of device 1105. Transmitter 1120 may transmit information over a primary carrier associated with a primary cell and one or more secondary carriers associated with secondary cells. In some examples, transmitter 1120 may be collocated with receiver 1110 in a transceiver. Transmitter 1120 can be configured to operate using a single antenna, or it can be configured to employ transmission diversity techniques using a plurality of antennas (not shown). Transmitter 1120 may be used to transmit various types of data or control signals (i.e., transmissions) over one or more communication links of a wireless communication system, such as one or more communication links 125 of the wireless communication system. wireless communication ports 100 or 200 described with reference to Figure 1 or 2, respectively. w. MCS indication module 1115 can manage the indication of an MCS table for uplink transmissions. In some examples, device 1105 may send DCIs through transmitter 1120 and MCS indication module 1115 may be configured to indicate an MCS table reference by determining a format and configuration for the DCIs. The MCS table reference may indicate one of the MCS tables to be used for uplink transmissions. The MCS indication module 1115 can determine whether at least 256 QAM is supported for uplink communication and thereby configure the DCIs to indicate whether at least 256 QAM is supported. The DCI format and DCI configuration can provide an MCS table reference that points to a legacy MCS table for uplink transmissions using lowest order modulation (e.g., modulation order 6 for 64 QAM) or it may indicate a non-inherited MCS table for uplink transmissions using higher order modulation (eg modulation order 8 for 256 QAM). The MCS indication module 1115 can, alone or in combination with the transmitter 1120, send the DCI to a UE along with an uplink resource grant for the uplink transmissions in the PUSCH.

[0113] Figure 12 shows a block diagram 1200 of a device 1105-a, according to various examples. In some examples, device 1105-a may illustrate aspects of one of the eNBs 105 of Figure 1, 2, 6, or 7, or device 1105 of Figure 11. Device 1105-a may include a receiver 1110-a, a module of MCS indication 1115-a, and a transmitter 1120-a. each of these components can be in communication with each other, either directly or indirectly. The. Receiver 1110-a can receive information such as packets, user data or control information associated with various information channels (eg, control channels, data channels, etc.). Receiver 1110-a can be configured to operate using a single antenna, or it can be configured to employ reception diversity techniques using a plurality of antennas (not shown). In some examples, radio frequency spectrum may be used for LTE/LTE-A communications, as described, for example, with reference to either Figure 1 or 2. Receiver 1110-a may be used to receive various types of data signals or control (i.e., transmissions) over one or more communication links of a wireless communication system, such as one or more communications links 125 of the wireless communication system 100 or 200 described with reference to Figure 1 or 2 respectively. Examples of the types of data or control signals received by receiver 1110-a include uplink transmission over both the PUCCH and the PUSCH. Information may be passed to and from the MCS Indicating Module 1115-a, the Transmitter 1120-a, and other device components 1105-a. B. Transmitter 1120-a may transmit one or more signals received from other components of device 1105-a. Transmitter 1120-a may transmit information over a primary carrier associated with a primary cell and one or more secondary carriers associated with secondary cells. In some examples, transmitter 1120-a may be collocated with receiver 1110-a in a transceiver. Transmitter 1120-a can be configured to operate using a single antenna, or it can be configured to employ transmission diversity techniques using a plurality of antennas (not shown). Transmitter 1120-a may be used to transmit various types of data or control signals (i.e., transmissions) over one or more communication links of a wireless communication system, such as one or more communications links 125 of the wireless communication system 100 or 200 described with reference to Figure 1 or 2, respectively. w. MCS indication module 1115-a can manage indication of an MCS table, one of the plurality of MCS tables, for uplink transmissions and can comprise an uplink MCS determination module 1210, a DCI 1215 and an MCS indication configuration module 1220. In some examples, device 1105-a may send the DCI to a UE 115 via transmitter 1120-a. Uplink MCS determination module 1210 may be configured to determine which MCS can be supported for uplink transmissions. In some examples, the uplink MCS determination module 1210 may receive one or more CQI values in a CQI report from the UE and, based on the CQI value, select an MCS that the link communication channel ascendant can support. The uplink communication channel can be PUSCH, depending on the channel conditions, can support legacy or non-legacy MCSs. The uplink MCS determination module may select an MCS for uplink transmission, accordingly, and output information to the DCI selection module 1215, the MCS indication configuration module 1220, or the transmitter 1120-a. d. DCI selection module can be configured to select DCI based at least in part on the configuration for the UE, channel conditions, etc. The DCI selection module 1215 can be configured to select a format for the DCI based on the MCS table determined by the uplink MCS determination module 1210. In some cases, the DCI format can be predefined. In some examples, the format for the DCI can, at least in some respects, provide a reference to which MCS table the UE can use for uplink transmissions. In other examples described below, the DCI format can provide an indication of a reference to the MCS table, as well as support fallback operations to provide protections from RRC misconfigurations. It is. MCS indication configuration module 1220 can be configured to send the DCI configured to transmit the reference to the MCS table. The MCS table reference may consider one of the MCS tables to be used for uplink transmissions.

[0114] In some examples, the MCS indication configuration module 1220 can determine whether the format of the DCI is a format of DCI 0 or a format of DCI 4 to configure the DCI to indicate the MCS table reference. In some examples, a DCI format 0 may be associated with an MCS table that supports at least 256 QAM uplink transmissions over a physical uplink shared channel (PUSCH). Consequently, the MCS indication configuration module 1220 can determine that the DCIs should have a predefined format of DCI format 0 so that the MCS table reference considers a non-inherited MCS table that supports higher order modulation . In other respects, the DCI 0 format can also be associated with legacy MCS tables. The 1220 MCS Indication Configuration Module can be configured to manage other aspects of configuring the DCIs to indicate the MCS table reference.

[0115] In one example, the MCS indication configuration module 1220 can select a lookup space (or decoding candidate) in which DCIs are to be communicated to indicate the MCS table reference. The MCS indication configuration module 1220 can select a format of DCI 0 and the DCIs must be communicated in a common lookup space to indicate that the MCS table reference is associated with a legacy MCS table. The MCS indication configuration module 1220 can select a format of DCI 0 and the DCI must be communicated in a UE specific lookup space to indicate that the MCS table reference is associated with a non-inherited MCS table and supports at least 256 QAM.

[0116] In another example, the MCS indication configuration module 1220 can indicate the MCS table reference by managing in which subframe the DCIs are communicated. The MCS indication configuration module 1220 can select a format of DCI 0 and the DCI must be communicated in a first subframe to indicate that the MCS table reference is associated with a legacy MCS table. The MCS indication configuration module 1220 can select a format of DCI 0 and the DCI must be communicated in a second subframe to indicate that the MCS table reference is associated with a non-inherited MCS table and supports at least 256 QAM .

[0117] In another example, the MCS indication configuration module 1220 can indicate the MCS table reference by managing which power control loops are associated with PUSCH transmissions. If two uplink power control loops are used, the MCS indication configuration module 1220 can indicate the MCS table reference, if the scheduled PUSCH transmission uses the first uplink power control loop, managing is the MCS table reference that is associated with a legacy MCS table. If scheduled PUSCH transmissions use the second power control loop, the MCS indication configuration module 1220 may indicate that the MCS table reference is associated with a non-inherited MCS table and supports at least 256 QAM.

[0118] In another example, the MCS indication configuration module 1220 can indicate the MCS table reference by managing a type of control channel used to transmit the DCIs. MCS indication configuration module 1220 can control that DCIs have a format of DCI 0 and are communicated on a PDCCH to indicate that the MCS table reference is associated with a legacy MCS table. If the DCIs have a format of DCI 0 and are communicated on an EPDCCH, the MCS indication configuration module 1220 may indicate that the MCS table reference is associated with a non-inherited MCS table and supports at least 256 QAM.

[0119] In another example, the MCS indication configuration module 1220 can indicate the MCS table reference by controlling which masking code is used to mask the DCIs. The MCS indication configuration module 1220 may use a first masking code to mask the DCIs to indicate that an MCS table reference is associated with a legacy MCS table. The MCS indication configuration module 1220 can use a second masking code to mask the DCI to indicate that the MCS table reference is associated with a non-inherited MCS table and supports at least 256 QAM.

[0120] It should be understood that other types of DCI format can be used in addition to other configuration parameters described above to transmit the MCS table reference. As an example, the DCI format 4 can also be used as a DCI format to transmit, at least in part, the MCS table reference in the DCI.

[0121] Figure 13 shows a block diagram 1300 of an apparatus 1305 for use in wireless communication, in accordance with various aspects of the present disclosure. In some examples, apparatus 1305 may be an example of aspects of one or more of the base stations 105 described with reference to any Figure 1 or 2 or aspects of one or more of the eNBs 105 described with reference to Figure 6 or 7, or aspects of one or more of devices 1105 described with reference to Figure 11 or 12. Apparatus 1305 may be configured to implement or facilitate at least some base station or apparatus features and functions described herein. The. apparatus 1305 may include a processor module 1310, a memory module 1320, at least one transceiver module (represented by transceiver module (or modules) 1350), at least one antenna (represented by antenna (or antennas) 1355), or an MCS 1115-b indication module. Apparatus 1305 may also include one or more of a communications module 1330 or a network communications module 1340. Each of these components may communicate with each other directly or indirectly via one or more buses 1335. b . memory module 1320 may include RAM or ROM. Memory module 1320 can store computer-readable, computer-executable software code 1325 that contains instructions that are configured to, when executed, cause processor module 1310 to perform various functions described herein relating to wireless communication or indication of MCS. Alternatively, computer executable software code 1325 may not be directly executable by processor module 1310, but may be configured to cause apparatus 1305 (e.g., when compiled and executed) to perform various of the functions described herein. document. w. Processor module 1310 may include an intelligent hardware device (e.g., a central processing unit (CPU), a microcontroller, an ASIC, etc.). Processor module 1310 may process information received via transceiver module (or modules) 1350, communications module 1330, or network communications module 1340. Processor module 1310 may also process information to be sent to the module ( or modules) from transceiver 1350 for transmission via antenna (or antennas) 1355, to communications module 1330, for transmission to one or more other base stations 105-g and 105-h, or to network communications module 1340 for transmission to a core network 130-a, which may be an example of one or more aspects of core network 130 described with reference to Figure 1. Processor module 1310 can handle, alone or in connection with the MCS indication module 1115-b, various aspects of communication over a radio frequency spectrum. d. transceiver module (or modules) 1350 may include a modem configured to modulate packets and deliver the modulated packets to antenna (or antennas) 1355 for transmission, and to demodulate packets received from antenna (or antennas) 1355. or modules) transceiver 1350 may, in some examples, be deployed as one or more transmitter modules and one or more separate receiver modules. Transceiver module (or modules) 1350 can support communications using one or more radio access technologies. Transceiver module (or modules) 1350 may be configured to communicate bidirectionally, via antenna (or antennas) 1355, with one or more UEs or apparatus, such as one or more of the UEs 115 described with reference to any Figure 1, 2, 6, or 7, or one or more of devices 805 configured as a UE, as described with reference to Figure 8 or 9. Apparatus 1305 may include, for example, multiple antennas 1355 (e.g., an array of antennas). Appliance 1305 can communicate with main network 130-a through network communications module 1340. Appliance 1305 can also communicate with base stations, such as base stations 105-g and 105-h, with the use of the 1330 communications module. e. MCS Indication Module 1115-b may be configured to perform or manage some or all of the features or functions described with reference to Figure 1, 2, 6, 7, 11 or 12 related to MCS indication. The MCS 1115-b indication module, or portions thereof, may include a processor, or some or all of the functions of the MCS 1115-b indication module may be performed by the processor module 1310 or in connection with the MCS indication module 1115-b. processor 1310. In some examples, the MCS indication module 1115b may be an example of the MCS indication module 1115 described with reference to Figure 11 or 12.

[0122] Figure 14 illustrates an exemplary method 1400 for indicating MCS, in accordance with various examples. The method 1400 can be carried out using, for example, one of the UEs 115 of Figure 1, 2, 6 or 7, the devices 805 of Figure 8 or 9 or the apparatus 1005 of Figure 10.

[0123] In block 1405, a UE receives downlink control (DCI) information comprising an uplink (UL) resource grant for the UE, wherein the DCIs have a DCI format and are configured to transmit a Modulation Coding Scheme (MCS) table reference. In some examples the DCI format may be predefined. The UE may receive DCIs from a serving base station. DCIs can be configured in a variety of ways to pass the reference to the MCS table. In some instances, the DCI can be configured so that the DCI format transmits the reference. In other examples, the DCI format in conjunction with other configuration parameters can convey the reference to the MCS table. In block 1410, the UE identifies an MCS table from a plurality of MCS tables based on the MCS table reference transmitted in the DCIs, wherein the MCS table defines the modulation and encoding to be used for message transmissions. UL on the resources granted in the UL grant. The UE can identify an inherited MCS table or a non-inherited MCS table based on the MCS table reference. An inherited table can be associated with the lowest order modulation (for example, modulation order 6). The non-inherited table can be associated with the highest order modulation (for example, modulation order 8).

[0124] In block 1415, one or more uplink transmissions are sent modulated and encoded according to the identified MCS table. Uplink transmissions can be sent using the uplink resource grant included in the DCI and can be sent on the PUSCH. In some examples, uplink transmissions may include UCI configured, at least in some respects, according to the identified MCS table. In some examples, the transmit power offset of the uplink transmissions may be determined, at least in some respects, according to the identified MCS table.

[0125] Figure 15 illustrates an exemplary method 1500 for indicating MCS, in accordance with various examples. The method 1500 can be carried out using, for example, one of the UEs 115 of Figure 1, 2, 6 or 7, the devices 805 of Figure 8 or 9 or the apparatus 1005 of Figure 10.

[0126] In block 1505, the UE receives downlink control (DCI) information comprising an uplink (UL) resource grant to the UE, wherein the DCIs have a DCI format and are configured to transmit the Modulation Coding Scheme (MCS) table reference. DCIs can receive DCIs from a serving base station. DCIs can be configured in a variety of ways to pass the reference to the MCS table.

[0127] In block 1510, the UE determines the DCI configuration and the DCI format. In some instances, the DCI can be configured so that the DCI format transmits the reference. For example, DCIs that have a predefined format of DCI format 0 (or 4) can be associated with a non-inherited MCS table. In other examples, the DCI format can be associated with legacy and non-inherited MCS tables, and the DCI format, in conjunction with other configuration parameters, can pass the reference to the MCS table. For example, the UE may identify a search space on which DCIs are communicated, one or more bits in the DCIs, a type of control channel on which DCIs are communicated, a feature set index associated with the EPDCCH if a UE is configured with two or more sets of EPDCCH features, a masking code with which DCIs are masked, etc., to determine DCI configuration and DCI format.

[0128] In block 1515, the UE identifies an MCS table. The identified MCS table can come from a plurality of MCS tables and can be identified based on the MCS table reference transmitted in the DCIs. The MCS table can define the modulation and encoding to be used for UL transmissions on the resources granted in the UL lease. The UE can identify an inherited MCS table or a non-inherited MCS table based on the MCS table reference. At block 1520, a determination is made whether an inherited or non-inherited MCS table has been identified. If a legacy table has been identified, method 1500 may move to block 1525 where information for uplink transmission may be modulated and encoded with up to 64 QAM. If a non-inherited MCS table has been identified, method 1500 may move to block 1530 where information for uplink transmission may be modulated and encoded with up to at least 256 QAM. In block 1535, modulated and coded information is sent in uplink transmissions. Uplink transmissions may be sent using the uplink resource grant included in the DCI and may be sent on the PUSCH.

[0129] Figure 16 illustrates an exemplary method 1600 for indicating MCS, in accordance with various examples. Method 1600 can be performed using, for example, one of the eNBs 105 of Figure 1, 2, 6, or 7, devices 1105 of Figure 11 or 12, or apparatus 1305 of Figure 13.

[0130] In block 1605, the DCI are configured to have a DCI format and to transmit an MCS table reference. In some cases, the DCI format may be predefined. DCIs can be configured in a variety of ways to pass the reference to the MCS table. In some instances, the DCI can be configured so that the DCI format transmits the reference. In other examples, the DCI format, in conjunction with other configuration parameters, conveys the reference to the MCS table. In block 1610, the DCIs are sent to a UE, where the DCIs comprise an uplink resource grant to the UE. The UE may determine the reference to the MCS table transmitted in the DCIs and identify an MCS table based on the reference. The MCS table can define the modulation and encoding to be used for UL transmissions on the resources granted in the UL lease. The UE can identify an inherited MCS table or a non-inherited MCS table based on the MCS table reference. An inherited table can be associated with the lowest order modulation (for example, modulation order 6). The non-inherited table can be associated with the highest order modulation (for example, modulation order 8). The UE can modulate and encode the information to be sent in uplink transmissions based on the identified MCS table.

[0131] At block 1615, one or more uplink transmissions are received from the UE, the uplink transmissions are modulated and encoded according to the MCS table identified from a plurality of MCS tables identified based on in the MCS table reference. Uplink transmissions can be received on resources provided in the uplink grant included in the DCI.

[0132] Additional examples of the aforementioned principles and methods are described as follows. For example, a method for wireless communications may include: receiving, via a user equipment (UE), downlink control (DCI) information comprising an uplink (UL) resource grant to the UE, wherein the DCIs have a DCI format and are configured to transmit a Modulation Coding Scheme (MCS) table reference; identifying an MCS table from a plurality of MCS tables based on the MCS table reference transmitted in the DCI, wherein the MCS table defines the modulation and encoding to be used for UL transmissions on the resources granted in the lease from UL; and sending one or more UL modulated and encoded transmissions according to the MCS table.

[0133] In some aspects, the DCIs may transmit the MCS table reference based on a type of a control channel on which the messages are communicated. The method may include selecting a first MCS table based on DCIs that are communicated in a PDCCH frame and selecting a second MCS table based on DCIs that are communicated in an EPDCCH frame. The DCIs can transmit the MCS table reference based on a masking code used to mask the DCIs. The method may include masked DCIs with a first masking code that is associated with a first MCS table, and masked DCIs with a second masking code that is associated with a second MCS table.

[0134] In some aspects, the method may include determining an uplink control information (UCI) compensation parameter associated with the identified MCS table, wherein a first UCI compensation parameter is associated with a first MCS table associated and a second UCI compensation parameter is associated with a second MCS table. The method may include determining a number of resource elements to multiplex the UCIs with at least one of the one or more UL transmissions based on the UCI offset parameter. UCIs may include one or more of a hybrid automatic request retry acknowledgment (HARQ-ACK), a rating indicator (RI), and a channel quality indicator (CQI). The identified MCS table may be a non-inherited MCS table associated with quadrature amplitude modulation up to 256, and the method may include receiving an indication of a quadrature amplitude modulation of up to 256 for downlink (DL) transmissions, where the DL transmission indication is separate from the DCI.

[0135] In another set of illustrative examples, an apparatus for wireless communications is described. The apparatus may include a processor, memory in electronic communication with the processor, and instructions that are executable by the processor. The instructions may be executable to: receive, via a user equipment (UE), downlink control (DCI) information comprising an uplink (UL) resource grant to the UE, where the DCIs have a DCI format and are configured to transmit a Modulation Coding Scheme (MCS) table reference; identifying an MCS table from a plurality of MCS tables based on the MCS table reference transmitted in the DCI, wherein the MCS table defines the modulation and encoding to be used for UL transmissions on the resources granted in the lease from UL; and sending one or more UL modulated and encoded transmissions according to the MCS table.

[0136] In some examples, instructions may be executable to select a first MCS table based on the DCIs that are included in a first subframe of the PDCCH frame and select a second MCS table based on the DCIs that are included in the second subframe of the PDCCH frame. In some aspects, instructions may be executable to receive a configuration from two or more EPDCCH resource sets, and select a first MCS table based on the DCIs that are communicated in a first EPDCCH resource set, and select a second table of MCS based on the DCIs that are communicated in the second set of EPDCCH resources.

[0137] In some aspects, DCIs may transmit the MCS table reference based on a type of a control channel on which DCIs are communicated. Instructions may be executable to select a first MCS table based on DCIs that are communicated in a PDCCH frame and select a second MCS table based on DCIs that are communicated in an EPDCCH frame. The DCIs can transmit the MCS table reference based on a masking code used to mask the DCIs. DCI can be masked with a first masking code that is associated with a first MCS table, and DCI can be masked with a second masking code that is associated with a second MCS table.

[0138] In another set of illustrative examples, an apparatus for wireless communications is described. The apparatus may include: means for receiving, via a user equipment (UE), downlink control (DCI) information comprising an uplink (UL) resource grant to the UE, where the DCIs have a DCI format and are configured to transmit a Modulation Coding Scheme (MCS) table reference; means for identifying an MCS table from a plurality of MCS tables based on the MCS table reference transmitted in the DCIs, wherein the MCS table defines the modulation and encoding to be used for UL transmissions on the granted resources in the UL grant; and means for sending one or more UL transmissions modulated and encoded according to the MCS table.

[0139] In some aspects, the DCIs may transmit the MCS table reference based on which subframe of a physical downlink control channel (PDCCH) the DCIs are communicated. The apparatus may include means for selecting a first MCS table based on the DCIs that are included in a first subframe of the PDCCH frame and selecting a second MCS table based on the DCIs that are included in the second subframe of the PDCCH. The DCIs can transmit the MCS table reference based on a masking code used to mask the DCIs. DCIs masked with a first masking code can be associated with a first MCS table, and DCIs masked with a second masking code can be associated with a second MCS table. The. apparatus may include means for determining an uplink control information (UCI) offset parameter associated with the identified MCS table, wherein a first UCI offset parameter may be associated with an associated first MCS table and a second parameter UCI compensation table can be associated with a second MCS table.

[0140] In some aspects, the apparatus may include means for determining numerous resource elements to multiplex the UCIs with at least one of the one or more UL transmissions based on the UCI offset parameter. The UCI may include at least one of a hybrid automatic request retry acknowledgment (HARQ-ACK), a ranking indicator (RI or a channel quality indicator (CQI). The identified MCS table may be an MCS table associated with quadrature amplitude modulation up to 256 and the apparatus may include means for receiving an indication of a quadrature amplitude modulation up to 256 for downlink (DL) transmissions, the DL transmission indication being separate from the DCI.

[0141] In another set of illustrative examples, a non-transient computer-readable medium for wireless communications stores instructions executable by a processor to: receive, through a user equipment (UE), downlink control information (DCI ) comprising an uplink (UL) resource grant to the UE, wherein the DCIs have a DCI format and are configured to transmit a Modulation Coding Scheme Table (MCS) reference; identifying an MCS table from a plurality of MCS tables based on the MCS table reference transmitted in the DCI, wherein the MCS table defines the modulation and encoding to be used for UL transmissions on the resources granted in the lease from UL; and sending one or more UL modulated and encoded transmissions according to the MCS table.

[0142] In some aspects, the plurality of MCS tables may include at least one inherited MCS table associated with quadrature amplitude modulation up to a first order and a non-inherited MCS table associated with quadrature amplitude modulation up to a second order, where the second order is higher than the first order. The DCIs may transmit the MCS table reference based on a lookup space of a physical downlink control channel (PDCCH) on which the DCIs are communicated. The instructions may be executable to determine whether the DCIs are included in a common search space of the PDCCH frame or in a UE specific search space of the PDCCH frame. The non-transient computer-readable medium may include executable instructions for selecting a first MCS table based on the DCIs that are included in the common search space of the PDCCH frame and selecting a second MCS table based on the DCIs that are included in the space. UE-specific lookup of the PDCCH frame.

[0143] In some aspects, the DCIs may transmit the MCS table reference based on which subframe of a physical downlink control channel (PDCCH) the DCIs are communicated. The non-transient computer-readable medium may include executable instructions for selecting a first MCS table based on the DCIs that are included in a first subframe of the PDCCH frame and selecting a second MCS table based on the DCIs that are included in the second subframe of the PDCCH frame. The DCI format can be one or more of a DCI 0 format or a DCI 4 format.

[0144] In some aspects, the DCIs may transmit the MCS table reference based on a type of a control channel on which the DCIs are communicated. The non-transient computer-readable medium may include executable instructions to select a first MCS table based on DCIs that are communicated in a PDCCH frame and select a second MCS table based on DCIs that are communicated in an EPDCCH frame. DCIs can transmit the MCS table reference based on a masking code used to mask the DCIs Masked DCIs with a first masking code can be associated with a first MCS table, and masked DCIs with a second masking code masking can be associated with a second MCS table. The executable instructions for identifying the MCS table may be executable for identifying an MCS table index, and determining an entry of a first MCS table or a second MCS table based on the MCS table index, where the first MCS table and the second MCS table share one or more common entries.

[0145] In some aspects, instructions for identifying the MCS table may be executable to identify one or more bits in the DCI, and select an MCS table from the plurality of MCS tables based on the one or more identified bits. The non-transient computer-readable medium may include executable instructions for determining a power compensation parameter associated with the identified MCS table, wherein a first power compensation parameter is associated with a first MCS table and a second power compensation parameter power is associated with a second MCS table. The non-transient computer-readable medium may include executable instructions for determining a transmit power for at least one of the one or more UL transmissions based on the power offset parameter.

[0146] In some aspects, the non-transient computer-readable medium may include executable instructions to receive a configuration of two or more sets of EPDCCH resources, and select a first MCS table based on the DCIs that are communicated in a first set of EPDCCH resources and select a second MCS table based on the DCIs that are communicated in the second EPDCCH resource set.

[0147] In some aspects, the non-transient computer-readable medium may include executable instructions to determine an uplink control information (UCI) offset parameter associated with the identified MCS table, wherein a first UCI offset parameter is associated with a first associated MCS table and a second UCI offset parameter is associated with a second MCS table. The non-transient computer-readable medium may include executable instructions for determining a number of resource elements to multiplex the UCIs with at least one of the one or more UL transmissions based on the UCI offset parameter. UCIs may include at least one of a hybrid automatic request retry acknowledgment (HARQ-ACK), a rating indicator (RI), or a channel quality indicator (CQI). The identified MCS table may be a non-inherited MCS table associated with quadrature amplitude modulation up to 256 and the instructions may be executable to receive an indication of a quadrature amplitude modulation of up to 256 for downlink (DL) transmissions, whereby the DL transmission indication is separate from the DCI.

[0148] In another set of illustrative examples, a method for wireless communications is described. The method may include: configuring downlink control information (DCI) to have a DCI format and to transmit a Modulation Coding Scheme (MCS) table reference; sending, to a user equipment (UE), the DCI, the DCI comprising an uplink (UL) resource grant to the UE; and receiving, from the UE, one or more UL transmissions modulated and encoded according to an MCS table from a plurality of MCS tables, wherein the MCS table is identified based on the MCS table reference broadcast on DCI.

[0149] In some aspects, configuring the DCIs to transmit the MCS may include one or more of identifying a search space of a physical downlink control channel (PDCCH) to communicate the DCIs, identifying in which subframe of the PDCCH to communicate the DCI or identify a masking code to use to mask the DCI. The DCI format can be one or more of a DCI format 0 or a DCI format 4. Configuring the DCI to transmit the MCS table reference instructs the UE to identify one or more of a legacy MCS table associated with the quadrature amplitude modulation up to a first order, or a non-inherited MCS table associated with quadrature amplitude modulation up to a second order, where the second order is higher than the first order.

[0150] In another set of illustrative examples, an apparatus for wireless communications is described. The apparatus may include a processor, memory in electronic communication with the processor, and instructions that are executable by the processor. The instructions may be executable to: configure downlink control (DCI) information to have a DCI format and to transmit a modulation coding scheme (MCS) table reference; sending, to a user equipment (UE), the DCI, the DCI comprising an uplink (UL) resource grant to the UE; and receiving, from the UE, one or more UL transmissions modulated and encoded according to an MCS table from a plurality of MCS tables, wherein the MCS table is identified based on the MCS table reference broadcast on DCI.

[0151] In some aspects, the executable instructions to configure the DCI to transmit the MCS may include one or more of the executable instructions to identify a search space of a physical downlink control channel (PDCCH) to communicate the DCI, identify in which subframe of the PDCCH to communicate the DCI or identify a masking code to use to mask the DCI. The DCI format can be one or more of a DCI format 0 or a DCI format 4. The executable instructions for configuring the DCI to transmit the MCS table reference instruct the UE to identify one or more of an MCS table inherited plus quadrature amplitude modulation up to a first order, or a non-inherited MCS table plus quadrature amplitude modulation up to a second order, where the second order is higher than the first order.

[0152] In another set of illustrative examples, an apparatus for wireless communications is described. The apparatus may include: means for configuring downlink control (DCI) information to have a DCI format and for transmitting a modulation coding scheme (MCS) table reference; means for sending, to a user equipment (UE), the DCI, the DCI comprising an uplink (UL) resource grant to the UE; and means for receiving, from the UE, one or more UL transmissions modulated and encoded according to an MCS table from a plurality of MCS tables, wherein the MCS table is identified based on the table reference of MCS transmitted in the DCI

[0153] In some aspects, the means for configuring the DCIs to transmit the MCS may include one or more of a means for identifying a search space of a physical downlink control channel (PDCCH) for communicating the DCIs, means for identifying in which subframe of the PDCCH to communicate the DCIs or means to identify a masking code for use to mask the DCIs. The DCI format can be one or more of a DCI format 0 or a DCI format 4. The means for configuring the DCI to transmit the MCS table reference instructs the UE to identify one or more of an inherited MCS table associated with quadrature amplitude modulation up to a first order, or a non-inherited MCS table associated with quadrature amplitude modulation up to a second order, where the second order is higher than the first order.

[0154] In another set of illustrative examples, a non-transient computer-readable medium for wireless communications is described. The non-transient computer-readable medium may include a non-transient computer-readable medium that stores instructions executable by a processor. Instructions may be executable by the processor to: configure downlink control (DCI) information to have DCI format and to transmit a Modulation Coding Scheme (MCS) table reference; sending, to a user equipment (UE), the DCI, the DCI comprising an uplink (UL) resource grant to the UE; and receiving, from the UE, one or more UL transmissions modulated and encoded according to an MCS table from a plurality of MCS tables, wherein the MCS table is identified based on the MCS table reference broadcast on the DCI

[0155] In some aspects, the executable instructions for configuring the DCI to transmit the MCS may include one or more of the executable instructions for identifying a search space of a physical downlink control channel (PDCCH) for communicating the DCI, instructions executables to identify which subframe of the PDCCH to communicate the DCIs in or executable instructions to identify a masking code to use to mask the DCIs. The DCI format can be one or more of a DCI format 0 or a DCI format 4. The executable instructions for configuring the DCI to transmit the MCS table reference instruct the UE to identify one or more of an MCS table inherited plus quadrature amplitude modulation up to a first order, or a non-inherited MCS table plus quadrature amplitude modulation up to a second order, where the second order is higher than the first order.

[0156] The techniques described in this document can be used for various wireless communication systems, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other systems. The terms "system" and "network" are often used interchangeably. A CDMA system can deploy a radio technology such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 covers IS-2000, IS-95 and IS-856 standards. IS-2000 Versions 0 and A is commonly referred to as CDMA2000 IX, IX, etc. IS-856 (TIA-856) is commonly referred to as CDMA2000 lxEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes Broadband CDMA (WCDMA) and other variants of CDMA. A TDMA system can deploy a radio technology such as Global System for Mobile Communications (GSM). An OFDMA system can deploy a radio technology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). Long Term Evolution 3GPP (LTE) and LTE Advanced (LTE-A) are new versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents coming from an organization called the “3rd Generation Partnership Project” (3GPP). CDMA2000 and UMB are described in documents coming from an organization called “3rd Generation Partnership Project 2” (3GPP2). The techniques described in this document can be used for the radio systems and technologies mentioned above, as well as other radio systems and technologies. For the sake of clarity, the above description describes LTE, WLAN and BT systems for example purposes, and corresponding terminology is used throughout much of the above description, although the techniques are applicable beyond these applications.

[0157] The detailed description presented above in connection with the attached drawings describes exemplary examples and does not represent only those examples that can be deployed or that fall within the scope of the claims. The term "exemplary" used throughout this description means "which serves as an example, instance or illustration", and not "preferred" or "advantageous" over other examples. The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, can be practiced without these specific details. In some cases, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the examples described.

[0158] Information and signals can be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols and chips that may be mentioned throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any other combination thereof.

[0159] The various illustrative blocks and modules described in connection with the disclosure herein can be implemented or realized with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. A general purpose processor may be a microprocessor, but alternatively the processor may be any conventional processor, controller, microcontroller or state machine. A processor may also be deployed as a combination of computing devices (eg, a combination of a DSP and a microprocessor, multiple microprocessors), one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0160] The functions described in this document can be implemented in hardware, software performed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, functions may be stored or transmitted via one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the accompanying disclosure and claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. The resources that deploy the functions can also be physically located in various locations, including being distributed so that portions of the functions are deployed in different physical locations. As used herein, including the claims, the term "and/or", when used in a list of two or more items, means that any one of the items listed can be properly employed, or any combination of two or more of the items. listed can be employed. For example, if a composition is described as containing components A, B and/or C, the composition may contain A alone; B alone; C alone; A and B in combination; A and C in combination; B and C in combination; or A, B and C in combination. Also, as used herein, including the claims, "or" as used in a list of items (e.g., a list of items prefaced by a phrase such as "at least one of" or "one or more of" ) indicates a disjunctive list so that, for example, a list of "at least one of A, B, or C" means A, B, C, AB, AC, BC, or ABC (that is, A, B, and C) .

[0161] Computer-readable media includes both computer storage media and communication media, which includes any medium that facilitates the transfer of a computer program from one location to another. A storage medium can be any available medium that can be accessed by a general purpose or special purpose computer. By way of example, and without limitation, computer-readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that may be used to transport or store desired program code media in the form of instructions or data structures and accessible by a general purpose or special purpose computer, or a general purpose or special purpose processor. Also, any connection is properly called a computer-readable medium. For example, if the software is transmitted from a website, server or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave, so coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are included in the definition of medium. Magnetic disk and optical disk as used herein include compact disk (CD), laser disk, optical disk, digital versatile disk (DVD), floppy disk and Blu-ray disk, where magnetic disks generally reproduce data magnetically, while optical discs reproduce data optically with lasers. The above combinations are also included in the scope of computer-readable media.

[0162] The foregoing description of the disclosure is provided to enable a person skilled in the art to produce or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the spirit or scope of the disclosure. Throughout this disclosure the term "example" or "exemplary" indicates an example or instance and does not imply or require any preference for the example shown. Accordingly, the disclosure is not limited to the examples and design projects described in this document, but must be in accordance with the broader scope consistent with the innovative resource principles disclosed in this document.

Claims (15)

1. Method for wireless communications, characterized in that it comprises: receiving, by means of a user equipment, UE (115), downlink control information, DCI, comprising an uplink resource grant, UL, to the UE (115), wherein the DCI has a format of DCI and is configured to transmit a modulation coding scheme table reference, MCS; identifying an MCS table (505, 510) from a plurality of MCS tables (505, 510) based on the MCS table reference transmitted in the DCI, wherein the table reference indicates which table of the plurality of MSC tables (505, 510) is to be used and wherein the MCS table (505, 510) defines the modulation and encoding to be used for UL transmissions on the resources granted in the grant in the UL; and sending one or more UL modulated and encoded transmissions according to the MCS table (505, 510); wherein the DCI carries the MCS table reference (505, 510) based on at least the DCI format together with a configuration of the DCI, wherein the configuration includes one or more of a search space selected from a frame of a PDCCH, one or more selected bits in the DCI, a selected subframe of a frame of a PDCCH, a selected type of control channel, a selected feature set index associated with EPDCCH if a UE is configured with two or more EPDCCH resource sets, a selected virtual cell ID associated with the PUSCH, or a selected masking code to mask the DCI. 2. Method according to claim 1, characterized in that the plurality of MCS tables (505, 510) comprises at least one legacy MCS table associated with quadrature amplitude modulation up to a first order and a table of Non-inherited MCS associated with quadrature amplitude modulation up to a second order, where the second order is higher than the first order. 3. Method according to claim 1, characterized in that the DCI carries the MCS table reference based on a search space of a physical downlink control channel, PDCCH, on which the DCI is communicated , wherein the particular method further comprises: determining whether the DCI is included in a common search space or a UE-specific search space; and selecting a first MCS table (505, 510) based on the DCI that is included in the common search space and selecting a second MCS table (505, 510) based on the DCI that is included in the UE-specific search space . 4. Method according to claim 1, characterized in that the DCI carries the MCS table reference based on at least one masking code used to mask the DCI. 5. Method according to claim 1, characterized in that it further comprises: receiving a configuration of two or more advanced physical downlink control channel resource sets, EPDCCH; and selecting a first MCS table (505, 510) based on the DCI that is communicated in a first set of EPDCCH resources and selecting a second MCS table (505, 510) based on the DCI that is communicated in a second set of EPDCCH resources. 6. Method according to claim 1, characterized in that identifying the MCS table comprises: identifying an MCS table index, and determining an entry of a first MCS table (505, 510) or a second MCS table (505, 510) based on the MCS table index, wherein the first MCS table (505, 510) and the second MCS table (505, 510) share one or more common entries; or the method according to claim 1, wherein identifying the MCS table (505, 510) comprises: identifying one or more bits in the DCI and selecting an MCS table (505, 510) from the plurality of tables of MCS (505, 510) based on the one or more identified bits. 7. Method, according to claim 1, characterized in that it further comprises: determining a power compensation parameter associated with the MCS table (505, 510) identified, in which a first power compensation parameter is associated with a first MCS table (505, 510) and a second power compensation parameter is associated with a second MCS table (505, 510); wherein the particular method further comprises determining a transmit power for at least one of the one or more UL transmissions based on the power offset parameter. 8. Apparatus for wireless communications characterized in that it comprises: means for receiving, by means of a user equipment, UE (115), downlink control information, DCI, comprising a grant of uplink resources, UL, for the UE (115), wherein the DCI has a format of DCI and is configured to carry a Modulation Coding Scheme MSC table reference, MCS; means for identifying an MCS table (505, 510) from a plurality of MCS tables (505, 510) based on the MCS table reference carried in the DCI, wherein the table reference indicates which table among the plurality of MSC tables (505, 510) is to be used, and wherein the MCS table (505, 510) defines the modulation and encoding to be used for UL transmissions on the resources granted in the UL grant; and means for sending one or more UL transmissions modulated and encoded in accordance with the MCS table; wherein the DCI carries the MCS table reference based on at least the DCI format together with a DCI configuration, wherein the configuration includes one or more of a search space selected from a frame of a PDCCH, one or more selected bits in the DCI, a selected subframe of a frame of a PDCCH, a selected type of control channel, a selected feature set index associated with EPDCCH if a UE is configured with two or more EPDCCH feature sets, a Selected virtual cell ID associated with PUSCH, or a selected masking code to mask the DCI. 9. Apparatus according to claim 8, characterized in that the plurality of MCS tables (505, 510) comprises at least one legacy MCS table that is associated with quadrature amplitude modulation up to a first order and a non-inherited MCS table that is associated with quadrature amplitude modulation up to a second order, where the second order is greater than the first order. 10. Apparatus according to claim 8, characterized in that the DCI carries the MCS table reference based on a lookup space of a physical downlink control channel (PDCCH) on which the DCI is communicated , wherein the particular apparatus further comprises: means for determining whether the DCI is included in a common search space or in a UE-specific search space; and means for selecting a first MCS table (505, 510) based on the DCI that is included in the common search space and selecting a second MCS table (505, 510) based on the DCI that is included in the specific search space of the EU. 11. Apparatus according to claim 8, further comprising: means for receiving a configuration of two or more advanced physical downlink control channel resource sets, EPDCCH; and means for selecting a first MCS table (505, 510) based on the DCI that is communicated in a first EPDCCH resource set and selecting a second MCS table (505, 510) based on the DCI that is communicated in a second set of EPDCCH features. 12. Apparatus according to claim 8, characterized in that the means for identifying the MCS table (505, 510) further comprise: means for identifying an MCS table index and means for determining an entry of a first MCS table (505, 510) or a second MCS table (505, 510) based on the MCS table index, wherein the first MCS table (505, 510) and the second MCS table (505, 510) share one or more common entries; or the apparatus according to claim 8, wherein the means for identifying the MCS table (505, 510) further comprises: means for identifying one or more bits in the DCI, and means for selecting an MCS table (505, 510) from the plurality of MCS tables (505, 510) based on the identified one or more bits. 13. Apparatus according to claim 8, characterized in that it additionally comprises: means for determining a power compensation parameter associated with the MCS table (505, 510) identified, wherein a first power compensation parameter is associated with a first MCS table (505, 510) and a second power compensation parameter is associated with a second MCS table (505, 510); wherein the particular apparatus further comprises: means for determining a transmit power for at least one of the one or more UL transmissions based on the power offset parameter. 14. A method for wireless communications, comprising: configuring downlink control information, DCI, to have a DCI format and carrying a modulation code conversion scheme table reference, MCS, wherein the table reference indicates which table of the plurality of MCS tables (505, 510) is to be used; sending, to a user equipment UE (115), the DCI, the DCI comprising an uplink resource grant, UL, to the UE (115); and receiving, from the UE (115), one or more UL transmissions modulated and encoded in accordance with an MCS table (505, 510) from a plurality of MCS tables, wherein the MCS table (505, 510) is identified based on the MCS table reference carried in the DCI; wherein configuring the DCI comprises configuring the DCI to carry the MCS table reference based on at least the format of the DCI and a configuration of the DCI, wherein the configuration includes one or more of a search space selected from a data frame a PDCCH, one or more selected bits in the DCI, a selected subframe of a frame of a PDCCH, a selected type of control channel, a selected feature set index associated with EPDCCH if a UE is configured with two or more sets of EPDCCH resource, a selected virtual cell ID associated with the PUSCH, or a selected masking code to mask the DCI. 15. Computer-readable memory characterized by the fact that it comprises instructions stored therein that, when executed, cause the computer to perform the method as defined in any one of claims 1 to 7 or 14.