RU2465745C1 - Handling uplink grant in response - Google Patents

Abstract

FIELD: information technology.

SUBSTANCE: invention relates to a wireless communication system involving a random access channel (RACH) procedure for user equipment (UE) to request access to an uplink channel. From a physical layer perspective, an evolved Base Station (eNB) responds with a random access preamble and a random access response (RAR) of a fixed length message containing, for example, 21 bits or 20 bits with a reserved bit for future extensions. In response to a need that exists for an RAR to accommodate variations in system bandwidth, an approach to encode a truncated resource block (RB) assignment of the RAR in manner in which the UE can interpret the RAR without loss of information is provided. That way, needs for achieving RACH procedures and existing channel resources can be realised.

EFFECT: high efficiency, low cost, improved interfacing with other standard open systems.

42 cl, 10 dwg

Description

This patent application claims priority based on provisional application US No. 61/088308 for "Method and apparatus for controlling the provision of uplink communication in a wireless communication system", filed August 12, 2008, and provisional application US No. 61/088327 on "Method and a device for controlling the provision of uplink communication in a wireless communication system, "filed August 12, 2008, both of which are assigned to the copyright holder of this application and are incorporated into this application by reference.

FIELD OF THE INVENTION

The exemplary and non-limiting embodiments described herein relate, in general, to systems, methods, software products and wireless communication devices and, in particular, to methods for setting an uplink grant format.

BACKGROUND

Wireless communication systems are widely used to provide the transmission of various types of content, such as voice, data, etc. Such systems may be multiple access systems capable of communicating with multiple subscribers by sharing available system resources (e.g., bandwidth and transmit power). Examples of such multiple access systems include code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA) and orthogonal frequency division multiple access (OFDMA) systems.

Typically, a multiple access wireless communication system can simultaneously provide communication for multiple wireless terminals. Each terminal communicates with one or more base stations by transmitting on the forward and reverse links. A forward link (or downlink) refers to a communication line from base stations to terminals, and a reverse link (or uplink) refers to a communication line from terminals to base stations. Such a communication line can be established using a system with one input and one output, multiple inputs and one output, or multiple inputs and multiple outputs (MIMO).

Universal Mobile Communications System (UMTS) is one of the third generation (3G) cellular telephone technologies. UTRAN - the abbreviation of the terrestrial access network for the universal mobile communications service UMTS - is a collective term for Nodes B and Radio Network Controllers that make up the UMTS core network. Various types of traffic can be transmitted through the communication network - from transmitted in a switched channel in real time to transmitted with packet switching based on the Internet Protocol (IP). UTRAN allows communication between the UE (subscriber station) and the core network. The UTRAN contains base stations called Nodes B and Radio Network Controllers (RNCs). An RNC provides management functions for one or more Nodes B. Nodes B and RNC can be the same device, although in exemplary embodiments there may be separate RNCs located in a base station serving a plurality of Nodes B. Despite the fact that they are not must be physically separated, there is a logical interface between them, known as lub. The RNC and its corresponding Nodes B are called Radio Network Subsystem (RNS). A UTRAN may have more than one RNS.

3GPP LTE (3GPP Long-Term Development) is the name given to the project under the Third Generation Partnership Project (3GPP) in order to improve the UMTS mobile communications standard to meet future requirements. The goals set include improving efficiency, reducing costs, improving services, using new spectrum capabilities and improved interfacing with other open system standards. The LTE system is described in a series of specifications UTRA (EUTRA) and Advanced UTRAN (EUTRAN).

This system may utilize a resource management scheme in which the UE may request resources whenever there is data in the UE for sending on the uplink. The base station may process each resource request from the UE and may send the provision (i.e., permission to use) of resources to the UE. Then, the UE may transmit data on the uplink using the provided resources. However, uplink resources are spent on sending resource requests, and downlink resources are spent on sending resource grants.

Although the size of the uplink grant on the physical downlink control channel (PDCCH) may depend on the bandwidth, the size of the uplink grant in the random access response (RAR) is fixed. Accordingly, there is a need to highlight an uplink grant in a random access response (RAR) that responds to differences in system bandwidth and does not adversely affect the random access channel (RACH) procedures for the UE.

SUMMARY OF THE INVENTION

The following is a simplified summary of the invention, giving an overview of a number of aspects of the described embodiments. This summary is not a comprehensive overview of all proposed embodiments and is not intended to identify the main or most important elements, nor to limit the scope of these embodiments. Its sole purpose is to present some concepts of the described embodiments in a simplified form as a prelude to the more detailed description below.

In accordance with one or more embodiments and corresponding descriptions thereof, various aspects are set forth in relation to adjusting (i.e., decreasing or increasing) the size of a PDCCH (physical downlink control channel) to provide an uplink by transforming resource block assignments (RB ) random access response (RAR) to provide uplink (UL) to regulate the system bandwidth, which, however, allows the physical level of the subscriber station (UE) in erpretirovat all the information to transmit it to the high-level processing. Alternatively or additionally, the Modulation and Coding Scheme (MCS) field can be reduced by restricting the modulations used to enhance truncation of the PDCCH size based on bandwidth, or for future development.

In one embodiment, a method for decoding a grant is provided. The grant is received on the downlink channel. A portion of the provision is found whose length has been adjusted. The assignment of resource blocks is decoded based on the number of uplink resource blocks.

In another embodiment, at least one processor for decoding a grant is provided. The first module receives the downlink grant. The second module detects a portion of the provision whose length is adjustable. The third module decodes the assignment of resource blocks based on the number of uplink resource blocks.

In yet another embodiment, a software product for providing decoding is provided. A computer-readable storage medium comprises a first set of codes causing a computer to accept provisioning on a downlink channel. The second set of codes causes the computer to detect a portion of the provision whose length is adjustable. The third set of codes causes the computer to decode the assignment of resource blocks based on the number of uplink resource blocks.

In yet another embodiment, an apparatus for decoding a provision is provided. A means is proposed for receiving provision on a downlink channel. A means is provided for detecting a portion of a provision whose length is adjustable. A tool is proposed for decoding resource block assignments based on the number of uplink resource blocks.

In yet another embodiment, an apparatus for decoding a provision is provided. The receiver receives the grant on the downlink. The computing platform detects a portion of the provision whose length is adjustable. The computing platform decodes the assignment of resource blocks based on the number of uplink resource blocks.

In yet another embodiment, a method for providing coding is provided. The number of resource blocks and the length adjustment based on the system bandwidth to be provided are determined. The assignment of resource blocks is encoded based on the number of uplink resource blocks to achieve a certain length adjustment. The provision is transmitted on a downlink channel.

In yet another embodiment, at least one processor for providing encoding is provided. The first module determines the number of resource blocks and the length adjustment based on the system bandwidth to provide. The second module encodes the assignment of resource blocks based on the number of uplink resource blocks to achieve a certain length adjustment. The third module transmits the grant on the downlink.

In yet another embodiment, a software product for providing coding is provided. The computer-readable storage medium comprises a first set of codes causing the computer to determine the number of uplink resource blocks and adjusting the length based on the system bandwidth to provide. The second set of codes causes the computer to encode the assignment of resource blocks based on the number of uplink resource blocks to achieve a certain length adjustment. A third set of codes causes the computer to transmit the grant over the downlink.

In yet another embodiment, an apparatus for providing coding is provided. A means is proposed for determining the number of uplink resource blocks and adjusting the length based on the system bandwidth to provide. A means is proposed for encoding the assignment of resource blocks based on the number of uplink resource blocks to achieve a certain length adjustment. A means is provided for transmitting a grant over a downlink channel.

In yet another embodiment, an apparatus for providing coding is provided. The computing platform determines the number of uplink resource blocks and the length adjustment based on the system bandwidth to provide. The computing platform encodes the assignment of resource blocks based on the number of uplink resource blocks to achieve a certain length adjustment. The transmitter transmits the grant over the downlink.

To achieve these objectives, one or more embodiments comprise the features fully described below and, in particular, as set forth in the claims. Some exemplary embodiments are set forth in detail in the following description and the annexed drawings, which indicate but a few of the various ways in which the principles of the embodiments can be implemented. Other advantages and features will be apparent from the following detailed description of an embodiment of the invention when considered in conjunction with the drawings, the described embodiments including all of these aspects and their equivalents.

BRIEF DESCRIPTION OF THE DRAWINGS

The features, nature and advantages of the present invention will be better understood from the following detailed description together with the drawings, in which the same elements are denoted identically, while:

Figure 1 shows a block diagram of a communication system that uses the coding of the adjusted (eg, truncated, extended) random access response (RAR) base station to match the system bandwidth;

Figure 2 shows a block diagram of the adjusted size RAR shown in Figure 1 obtained by truncating the uplink grant (UL);

FIG. 3 is a block diagram of the adjusted size RAR shown in FIG. 1 obtained by an uplink (UL) grant extension;

4 is a block diagram of a multiple access wireless communication system, in accordance with one embodiment, for variable length random access responses;

5 is a block diagram of a communication system for providing variable-length random access responses;

Figure 6 shows a timing diagram of a method for a subscriber station (UE) requesting uplink resources and interpreting a random access response (RAR) from an enhanced base node (eNB);

7 shows a flowchart of a method for a random access response (RAR);

FIG. 8 is a flowchart of a method for a truncated random access response;

Figure 9 shows a block diagram of a subscriber station containing modules for receiving and interpreting truncated random access responses; and

Figure 10 shows a block diagram of a base node containing modules for truncating and transmitting random access responses.

DETAILED DESCRIPTION OF THE INVENTION

In a wireless communication system, a random access channel (RACH) procedure is provided for a subscriber station (UE) to request access to an uplink channel. From the point of view of the physical layer, the Enhanced Base Station (eNB) responds with a random access response (RAR), which may include a detected preamble, a message of constant length containing the provision of uplink communication, for example, 21 bits or 20 bits with a backup bit for perspective development, as well as other fields such as timing advance and Temporary Cellular Radio Network Identifier (C-RNTI). In response to the existing need for the RAR to accommodate changes in the bandwidth of the uplink system, an approach is proposed whereby the assignment of truncated resource blocks (RB) of the RAR is encoded so that the UE can interpret the RAR at any system bandwidth. In this way, the requirements for implementing RACH procedures and available channel resources can be realized.

Various embodiments are described below with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a proper understanding of one or more embodiments. However, it can be understood that various embodiments can be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to provide a description of these embodiments.

Used in this application, the terms "component", "module", "system", etc. relate to an entity related to the use of a computer - either to hardware, or to a combination of hardware and software, or to software, or to executable software. For example, a component may be, but is not limited to, a process carried out in a processor, a processor, an object, an executable module, a thread of execution, a program, and / or a computer. For example, both an application running on a server and a server can be a component. One or more components may be in the process and / or thread of execution, and the component may be concentrated on one computer and / or dispersed over two or more computers.

The term “exemplary” is used herein to mean serving as an example, sample, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects or constructions.

In addition, one or more of the options can be implemented in the form of a method, device or product using standard programming and / or design methods for creating software, firmware, hardware, or any combination thereof, for controlling a computer to implement the described embodiments . As used herein, the term “product” (or, similarly, “software product”) encompasses a computer program accessible from any computer-readable device, carrier, or medium. For example, a computer-readable medium may include, but is not limited to, magnetic storage devices (eg, hard magnetic disk, floppy disk, magnetic cards ...), optical disks (eg, compact disc (CD), digital versatile disk (DVD) ...), smart cards and flash memory devices (e.g. card, flash drive). In addition, it should be understood that the carrier wave can be used to transfer computer data, such as data used in sending and receiving e-mail or when accessing a network such as the Internet or a local area network (LAN). Of course, those skilled in the art will understand that many changes can be made to this configuration within the scope of the described embodiments.

Various embodiments will be presented in terms of systems that may comprise a number of components, modules, and the like. It should be understood that various systems may contain additional components, modules, etc. and / or may not contain all the components, modules, etc., discussed in relation to the drawings. A combination of these approaches may also be used. The various embodiments described herein may be implemented on electrical devices, including devices that utilize touch screen technologies and / or mouse and keyboard interfaces. Examples of such devices include computers (desktop and mobile), smartphones, personal digital assistants (PDAs), and other electronic devices, both wired and wireless.

1, a communication system 100 of a base station depicted as an enhanced base node (eNB) 102 communicates over a wireless (OTA) communication line 104 with a subscriber station (UE) 106. The eNB 102 controls a random access channel (RACH) 108 for requests 110 from UE 106 to transmit on a shared uplink data transmission 112. In response to this, the eNB transmits a random access response 116 of a shared downlink (DL) 118. RAR 116, in response to a request 110, contains a preamble 120, uplink provision ligature and other fields (see above) 122. In a preferred embodiment, the UL RAR providing encoder 124 in the eNB 102 responsive to the selected system bandwidth in the UL can truncate the data in the RAR 122 with the possibility of prediction to form the adjusted RAR 122 ', so that the UL RAR grant decoder 126 in the UE 106 can interpret all the upper layer processing information.

In accordance with FIG. 2, a first example of a corrected size RAR 122 ′ (FIG. 1) is achieved by truncating an uplink (UL) grant 200 with a top fixed size that supplies or consumes information. In particular, truncated bits 202 are excluded so that the truncated UL grant 204 has a full understanding of the truncation restrictions used, and the recipient can restore the fixed UL grant 200. Thus, UL grant information can be transmitted in a reduced system bandwidth.

In accordance with FIG. 3, a second example of a corrected size RAR 122 ′ (FIG. 1) is achieved by adding inserted bits 302 to provide UL fixed size 304 to obtain an extended RAR 306 with a size suitable for a larger system bandwidth.

It should be understood that wireless communication systems are widely used to provide the transmission of various types of content, such as voice, data, etc. Such systems may be multi-access systems capable of communicating with multiple subscribers by sharing available system resources (e.g., bandwidth and transmit power). Examples of such multi-access systems include code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), 3GPP LTE systems and orthogonal frequency division multiple access (OFDMA) systems .

Typically, a multiple access wireless communication system can simultaneously provide communication for multiple wireless terminals. Each terminal communicates with one or more base stations by transmitting on the forward and reverse links. A forward link (or downlink) refers to a communication line from base stations to terminals, and a reverse link (or uplink) refers to a communication line from terminals to base stations. Such a communication line can be established through a system with one input and one output, with one input and multiple outputs and with multiple inputs and multiple outputs (MIMO).

In a MIMO system, multiple ( N _T ) transmit antennas and multiple ( N _R ) receive antennas are used for data transmission. A MIMO channel formed by N _T transmit and N _R receive antennas can be divided into N _S independent channels, which are also called spatial channels, where N _S ≤min { N _T , N _R }. Each of the N _S independent channels corresponds to a certain “dimension”. By using the additional number of measurements created by multiple transmit and receive antennas, improved characteristics (for example, higher throughput and / or higher reliability) can be provided in the MIMO system.

The MIMO system supports time division duplex (TDD) and frequency division duplex (FDD) systems. In the TDD system, transmissions on the forward and reverse links are carried out in the same frequency band, as a result of which the reciprocity principle allows us to establish the difference between the forward link and the reverse one. This allows the access point to benefit from a forward link antenna gain when there are multiple antennas at the access point.

4 depicts a wireless multiple-access communication system in accordance with one embodiment. Access point (AP) 350 contains a plurality of antenna groups, one of the groups containing antennas 354 and 356, the other 358 and 360, and an additional group containing antennas 362 and 364. In FIG. 4, only two antennas are shown for each antenna group, however for each group of antennas, more or fewer antennas can be used. Access terminal 366 (AT) communicates with antennas 362 and 364, with antennas 362 and 364 transmit information to access terminal 366 on forward link 370 and receive information from access terminal 366 on reverse link 368. The access terminal 372 communicates with antennas 356 and 358, the antennas 356 and 358 transmit information to the access terminal 372 on the forward link 376 and receive information from the access terminal 372 on the reverse link 374. In the FDD system, communications 368, 370, 374 and 376 can use different frequencies for communication. For example, forward link 370 may use a frequency different from the frequency used by reverse link 368. Each group of antennas and / or the area in which they are supposed to communicate is often called the sector of the access point 350. In the present embodiment, each of the antenna groups is designed to communicate with access terminals 366, 372 in a sector from areas served by access point 350.

When communicating on forward links 370 and 376, the transmitting antennas of access point 350 use beamforming to improve the signal-to-noise ratio of the forward links for various access terminals 366 and 374. In addition, an access point using beamforming to transmit to access terminals randomly scattered throughout its service area, it creates less interference for access terminals in neighboring cells than an access point transmitting to all of its terms For access via a single antenna.

Access point 350 may be a fixed station, which is used to communicate with terminals and may also be referred to as an access point, Node B, or some other terminology. Access terminal 366, 372 may also be called a subscriber station (UE), wireless communication device, terminal, access terminal, or some other terminology.

5 shows a block diagram of an embodiment of a transmitting system 410 (also known as an access point) and a receiving system 450 (also known as an access terminal) in a MIMO system 400. In the transmitting system 410, traffic information for a number of information streams is transmitted from a source 412 data per processor 414 transmitted (TX) data.

In one embodiment, each information stream is transmitted through a respective transmit antenna. TX data processor 414 performs formatting, coding, and interleaving of traffic data for each information stream based on a special coding scheme selected for this information stream to transmit encoded information.

The coded information for each information stream can be combined with pilot information using OFDM techniques. Pilot information is, as a rule, a known combination of data that is processed in a known manner and can be used in the receiving system to estimate the channel response. Then, the combined pilot and encoded information in each information stream is modulated (i.e., symbol-wise converted) based on a particular modulation method (e.g., on-off phase shift keying (BPSK), quadrature phase shift keying (QPSK), multiple phase shift keying (M-PSK ) or multi-level quadrature amplitude modulation (M-QAM)) selected for this information stream, in order to transmit modulation symbols. The data rate, coding, and modulation of data for each information stream may be determined by instructions executed by processor 430.

Then, the modulation symbols in all information streams are transmitted to the TX MIMO processor 420, which can further process the modulation symbols (for example, for OFDM). Then, the TX MIMO processor 420 TX transmits N _T modulation symbol streams to N _T transmitters (TMTR) 422a-422t. In some embodiments, TX MIMO processor 420 applies beamforming weights to the symbols of the information streams and to the antenna from which the symbol is transmitted.

Each of the transmitters 422 receives and processes a corresponding symbol stream for transmitting one or more analog signals, and then normalizes (for example, amplifies, filters, and upconverts) these analog signals to obtain a modulated signal suitable for transmission over the MIMO channel. Then, N _T modulated signals from transmitters 422a-422t are transmitted from N _T antennas 424a-424t, respectively.

At a receiving system 450, the transmitted modulated signals are received by N _R antennas 452a through 452r, and the received signal from each of the antennas 452 is transmitted to a respective receiver (RCVR) 454a through 454r. Each of the receivers 454 normalizes (for example, filters, amplifies, and downconverts) the corresponding received signal, digitizes the normalized signal to obtain discrete values, and then processes these discrete values to obtain the corresponding “received” symbol stream.

Next, RX data processor 460 receives and processes N _R received symbol streams from N _R receivers 454 based on a particular processor processing method to obtain N _T “detected” symbol streams. Then, the RX data processor 460 performs demodulation, deinterleaving, and decoding of each detected symbol stream to recover traffic data from this information stream. The processing using RX data processor 460 is complementary to that performed by the TX MIMO processor 420 and TX data processor 414 in the transmitter system 410.

The processor 470 periodically determines which precoding matrix to use (discussed below). The processor 470 generates a reverse link message comprising a matrix index block and an estimated value block.

The reverse link message may contain various kinds of information about the channel and / or the received information stream. The reverse link message is then processed by TX data processor 438, which also receives traffic data from a number of information streams from data source 436, is modulated by modulator 480, normalized by transmitters 454a-454r, and transmitted back to transmitter system 410.

In transmitter system 410, modulated signals from receiver system 450 are received by antennas 424, normalized by receivers 422, demodulated by demodulator 440, and processed by data processor 442 RX to extract a reverse link message transmitted by receiver system 450. Then, processor 430 determines which precoding matrix to use for determine the weighting coefficients of the formation of the radiation pattern, and then processes the selected message.

In one embodiment, the logical channels are divided into control channels and traffic channels. The logical control channels comprise a broadcast control channel (BCCH), which is a DL channel for broadcasting system control information, a paging control channel (PCCH), which is a DL channel transmitting paging information, and a multicast control channel (MCCH), which is a channel Point-to-multipoint DL used to transmit scheduling and control information of a Multimedia Multicast Broadcasting Service (MBMS) for one or more multicast channels Transferring the data (MTCH). As a rule, after establishing an RRC connection, this channel is used only by UEs that receive MBMS (Note: formerly MCCH + MSCH). The dedicated control channel (DCCH) is a point-to-point two-way channel that transmits specific control information and is used by UEs having an RRC connection. In one embodiment, the logical traffic channels include an Individual Traffic Channel (DTCH), which is a point-to-point two-way channel allocated to one UE for transmitting user information. In addition, this includes the Multicast Data Channel (MTCH) for a point-to-multipoint DL channel for transmitting traffic information.

In one embodiment, the Transport channels are divided into DL and UL. DL transport channels include a transport broadcast channel (BCH), a downlink shared channel (DL-SDCH), and a transport paging channel (PCH), whereby the PCH is used to provide energy savings to the UE (the network indicates a discontinuous reception cycle (DRX) for UEs) broadcast throughout the cell and mapped to physical layer (PHY) resources that can be used for other control channels and traffic. UL transport channels include a random access channel (RACH), a request channel (REQCH), an uplink shared data channel (UL-SDCH), and a plurality of physical channels (PHY). PHY channels include a plurality of DL channels and UL channels.

PHY DL channels include: common pilot channel (CPICH), synchronization channel (SCH), common control channel (CCCH), common control channel DL (SDCCH), multicast control channel (MCCH), shared UL resource allocation channel ( SUACH), an acknowledgment channel (ACKCH), a DL shared physical data channel (DL-PSDCH), a UL power control channel (UPCCH), a paging indication channel (PICH) and a load indication channel (LICH). PHY UL channels include: a physical random access channel (PRACH), a channel quality indication channel (CQICH), an acknowledgment channel (ACKCH), an antenna subgroup indication channel (ASICH), a shared request channel (SREQCH), a shared physical transmission channel UL Data (UL-PSDCH) and Broadband Pilot Channel (BPICH).

In accordance with FIG. 6, methodology 600 provides a subscriber station (UE) 602 capable of requesting uplink resources and interpreting a random access response (RAR) from an enhanced Base Node (eNB) 604. A RAR may have a fixed length, regardless of bandwidth systems and, nevertheless, do not lose information. To this end, the assignment of resource blocks for a given bandwidth of the uplink system is expanded or narrowed to match the RAR. UE 602 determines the required number of blocks of uplink resources (N _RB ^UL) (step 610) and uses the random access (RACH) procedure to perform the channel request to eNB (step 612).

The physical layer L1 of the eNB 604 receives a fixed length random access response (RAR) from the upper layer (block 614). It is determined how long an adjustment should be made to match the system bandwidth (block 616). Length adjustments are made to match the system bandwidth, for example, expanding / truncating resource block assignments (RBs). Such adjustment is based on the number of uplink resource blocks so that information is not lost (block 618). The adjusted length RAR is transmitted to UE 602 (block 620).

UE 602 detects the corrected length RAR and, in an embodiment, detects the adjusted RB assignment length (block 622). Based on the information on the number of uplink resource blocks, an initial fixed-size RAR can be determined (block 624). L1 transfers to its upper level the assignment of resource blocks of a fixed size (block 626).

In one embodiment, a methodology 900 is shown in FIG. 7 for a random access response. Upper level RAR processing indicates a 20-bit uplink grant, comprising the following:

Frequency hopping flag - 1 bit;

Assignment of resource blocks of a fixed size - 10 bits;

Truncated modulation and coding scheme - 4 bits;

Full Power Adjustment (TPC) for the planned Shared Physical Uplink (PUSCH) - 3 bits;

The delay in UL is 1 bit; and

The channel quality indicator (CQI) request is 1 bit (block 902).

Provided that N _rb ^ul is the number of uplink resource blocks, if N _rb ^ul ≤ 32, then the assignment of fixed-size resource blocks is truncated to its b least significant bits, where b = the upper value of log ₂ ((N _rb ^ul * N _rb ^ul +1) / 2) (step 904). Next, the truncated assignment of resource blocks is interpreted in accordance with the rules for the conventional provision of a physical downlink control channel (PDCCH) (block 906).

If N _rb ^ul > 32, then b bits are concatenated with the value set to “0”, as the most significant bits, with the assignment of resource blocks of a fixed size, where b = the upper value of log ₂ ((N _rb ^ul * N _rb ^ul +1 ) / 2) -10 (step 908). The following is an interpretation of the extended assignment of resource blocks in accordance with the rules for the usual provision of PDCCH.

In one aspect, a method for interpreting the assignment of resource blocks of a fixed size provides that if N _rb ^ul > 32, then the 9 least significant bits are used to interpret them as in a system with a frequency of 5 MHz (N _rb ^ul = 25). The high bit indicates whether the 9-bit grant (see above) begins at RB = 0 or at RB = 32 (step 910).

The UE establishes a 5-bit modulation and coding scheme and redundant version I _MCS by concatenating “0” as a high bit with a received 4-bit truncated modulation and coding scheme (MCS) (step 912).

Upon receipt of the uplink grant, the random access response may indicate a new transmission to the upper layers (block 914).

8, a methodology 1000 for a truncated random access response is depicted. When allocating resources of the 2nd type, information on the allocation of resources indicates to the planned UE a set of allocated continuously localized virtual resource blocks (VRBs) or, conversely, distributed virtual resource blocks, depending on the setting of a 1-bit flag transmitted by the corresponding PDCCH (step 1002). The allocations of localized VRBs for a UE range from one VRB to a maximum number of VRBs spanning the system bandwidth. Allocated distributed VRBs for a UE range from one VRB to N _rb ^dl VRB if N _rb ^dl is 6-49, and range from one VRB to 16 if N _rb ^dl is 50-110 (block 1004).

A type 2 resource allocation field consists of a resource indication value (RIV) corresponding to an initial resource block ( RB _start ) and a length, in units of continuously allocated resource blocks ( L _CRBs ) (step 1006). At 1008, a resource indication value is determined as follows:

, тогдаif

then

,

,

otherwise

.

.

In another aspect, at 1010, the upper layers process a random access response and transmit the following information to the physical layer:

Frequency hopping flag - 1 bit;

Assignment of resource blocks of a fixed size - 10 bits;

Truncated modulation and coding scheme - 4 bits;

TPC command for scheduled PUSCH - 3 bits;

The delay in UL is 1 bit; and

The CQI request is 1 bit.

With regard to providing UL corresponding to a random access response, a fixed size resource block assignment field is interpreted as follows:

, то<if>

then

, и интерпретация усеченного назначения блоков ресурсов в соответствии с правилами для обычной информации управления нисходящей линии связи (DCI) 0-го формата (этап 1012),truncate the assignment of resource blocks of a fixed size to its b least significant bits, where

, and interpreting the truncated assignment of resource blocks in accordance with the rules for conventional downlink control information (DCI) of the 0th format (step 1012),

otherwise

, и интерпретация расширенного назначения блоков ресурсов в соответствии с правилами для DCI 0-го формата (этап 1014), b bits are preliminarily added with the values set to “0” to the assignment of resource blocks of a fixed size, where

, and interpreting the extended assignment of resource blocks in accordance with the rules for DCI of the 0th format (step 1014),

end <if>,

the field of the truncated modulation and coding scheme is interpreted in such a way that the modulation and coding scheme corresponding to providing a random access response is determined by the MCS indices 0-15 (step 1016).

In accordance with FIG. 9, an access terminal 1100 (eg, a subscriber station) comprises a computing platform 1102 that provides means for causing a computer to decode a fixed size resource block assignment encoded for a limited system bandwidth and received from a base node (FIG. 12 ) In particular, computing platform 1102 includes sets of instructions or codes (modules) 1104-1112 executed by a processor 1114, which also controls transmission and reception by a transceiver (“Tx / Rx”) 1116. In particular, means (module) are provided 1104 for transmitting a random access channel request for uplink access. Means (module) 1106 are provided for receiving a random access response on a downlink control channel. Means (module) 1108 are provided for detecting the assignment of resource blocks of adjusted length, the length of which has been adjusted to match the system bandwidth. Means (module) 1110 are provided for decoding resource block assignments with a length based on the number of uplink resource blocks. Means (module) 1112 are provided for decoding a truncated Modulation and Coding Scheme (MCS) from 4 bits to the original 5 bits.

10, the Enhanced Base Node (eNB) 1200 comprises a computing platform 1202 that provides means for causing a computer to encode a fixed-size random access response encoded for a limited system bandwidth. In particular, computing platform 1202 includes sets of instructions or codes (modules) 1204-1213 executed by a processor 1214, which also controls transmission and reception with a transceiver (“Tx / Rx”) 1216. In particular, means (module) are provided 1204 for transmitting a random access channel request for uplink access. Means (module) 1206 are provided for determining the number of uplink resource blocks and system bandwidth. Means (module) 1208 are provided for determining a random access response of a fixed size. Means (module) 1210 are provided for encoding a fixed size random access response part based on the number of uplink resource blocks with a length based on the system bandwidth. Means (module) 1212 are provided for transmitting a corrected random access random access response over a downlink channel. Means (module) 1213 are provided for encoding the original Modulation and Encoding Scheme (MCS) from 5 bits to truncated 4 bits.

The above description contains examples of various embodiments of the invention. Of course, it is not possible to describe all possible combinations of components or methods in order to describe various embodiments, but one skilled in the art will understand that many additional combinations and transformations are possible. In accordance with this description includes all such options that are within the essence and scope of the attached claims.

In particular with respect to the various functions performed by the components, devices, circuits, systems, etc. described above, the terms (including a reference to “means for”) used to describe such components, unless otherwise indicated separately, correspond to any component that performs the specified function of the described component (for example, the functional equivalent), even structurally not equivalent to the disclosed structure, which performs this function in the shown embodiments. In this regard, it should also be understood that various embodiments include a system as well as a computer-readable medium containing computer-executable instructions for implementing actions and / or events of the various methods described.

In addition, although a particular feature could be described in relation to one of several implementations, such a feature may be combined with one or more other features of other implementations, which may be desirable and preferred for any given or specific application. In those cases where the terms “comprises” and “comprising” and their variants are used either in the detailed description or in the claims, these terms are encompassing similarly to the term “including”. In addition, the term “or” when used either in the detailed description or in the claims means “non-exclusive or”.

In addition, as will be clear, various parts of the described systems and methods may include or consist of artificial intelligence, machine learning, knowledge or rules based on components, subcomponents, processes, tools, techniques or mechanisms (e.g., support vector computers, neural networks, expert systems, Bayesian trust networks, fuzzy logic, joint data processing subsystems, classifiers, ...). Such components, among other things, can automate some of the mechanisms or processes that are performed in order to make parts of systems and methods more adaptive, as well as efficient and intelligent. By way of example, and not limitation, an advanced RAN (e.g., access point, eNodeB) can predict or predict when a robust or extended control field has been used.

Given the above examples of systems, methodologies that can be implemented in accordance with the described object of the invention are described with reference to several flowcharts. Although for simplicity, explanations of the methodology are shown and described in the form of a sequence of blocks (actions), it should be understood that the claimed subject matter is not limited to the order of blocks, since some blocks can be arranged in a different order than shown and described in the present invention, and / or simultaneously with other blocks. Moreover, not all blocks may be required to implement the methodologies described here. In addition, it should also be understood that the methodologies described herein may be stored on some product to facilitate the transport of such methodologies and their transfer to computers. The term “product” as used herein encompasses a computer program that can be accessed from any computer-readable device, carrier signal or medium.

It should be understood that any patent, publication, or other material containing a description of the invention, in whole or in part, which is considered to be included here by reference, is included only provided that the material included does not contradict the existing definitions, statements or other materials describing the invention set forth in the present invention. In this regard, and in cases where it is necessary, the invention set forth above in direct form cancels any conflicting materials incorporated by reference. Any material or part thereof that is deemed to be incorporated by reference, but which contradicts the existing definitions, statements or other materials describing the invention described herein, will be included only provided that there is no conflict between the material included and the material containing the description of the invention.

Claims (42)

1. The method of decoding the provision, including:
receiving downlink provisioning;
detecting a portion of the provision whose length has been adjusted; and
interpretation of the assignment of resource blocks of this part of the provision, and the interpretation of the assignment of resource blocks based on the number of blocks

uplink resources. 2. The method according to claim 1, further comprising detecting a portion of the provision with the adjusted length containing the truncated or expanded assignment of resource blocks in accordance with the system bandwidth. 3. The method according to claim 2, further comprising interpreting the assignment of resource blocks by:
determining whether

, and truncation in this case, the assignment of resource blocks of a fixed size to its b low bits, where b is the upper value

and
interpreting such a truncated assignment of resource blocks in accordance with the rules for the conventional provision of a physical downlink control channel (PDCCH). 4. The method according to claim 3, further comprising interpreting the assignment of resource blocks by:
determining whether

, and concatenation in this case, b bits with the value set to “0”, as high bits, with the assignment of resource blocks of a fixed size, where b is the upper value

and
interpreting the extended assignment of resource blocks in accordance with the rules for the usual provision of PDCCH. 5. The method according to claim 1, further comprising interpreting the additional truncation of the grant by detecting at the physical layer an indication that a new transmission is requested upon receipt of the uplink grant in a random access response (RAR). 6. The method according to claim 5, further comprising detecting at the physical level that a new transmission is requested upon receipt of the uplink grant in the RAR. 7. The method according to claim 1, further comprising interpreting the provision with the adjusted length to meet the requirements of a fixed-size format from a 1-bit frequency hop flag, 10-bit assignment of fixed size resource blocks, 5-bit modulation and coding scheme, 4-bit full power adjustment for the scheduled physical uplink (PUSCH), 1-bit uplink delay, and 1-bit channel quality indicator (CQI) request. 8. The method according to claim 1, further comprising interpreting the assignment of resource blocks by:
in response to the determination that

interpreting the assignment of resource blocks of a fixed size, as truncated to its b least significant bits, where

moreover, the truncated assignment of resource blocks is interpreted in accordance with the rules for normal downlink control information (DCI) of the 0th format; and
in response to the determination that

interpretation of the assignment of resource blocks of a fixed size as extended with pre-added b bits with a value set to “0”, where

moreover, the interpretation of the extended assignment of resource blocks is performed in accordance with the rules for a regular DCI 0th format. 9. The method according to claim 1, further comprising interpreting the truncated modulation and coding scheme (MCS) as indices 0-15, with the passage of maximum modulation. 10. A processor for decoding a grant, comprising:
a first module for receiving provisioning on the downlink channel;
a second module for detecting a portion of the provision whose length has been adjusted; and
a third module for interpreting the assignment of resource blocks to this part of the provision, wherein the interpretation of the assignment of resource blocks is based on the number of blocks

uplink resources. 11. A computer-readable storage medium containing computer codes stored therein for decoding a presentation, comprising:
a first set of codes prompting a computer to accept provisioning on a downlink channel;
a second set of codes prompting the computer to detect a portion of the provision whose length has been adjusted; and
a third set of codes prompting the computer to interpret the assignment of resource blocks of this part of the provision, wherein the interpretation of the assignment of resource blocks is based on the number of blocks

uplink resources. 12. An apparatus for decoding a provision, comprising:
means for receiving the provision of the channel downlink;
means for detecting a portion of the provision whose length has been adjusted; and
means for interpreting the assignment of resource blocks to this part of the provision, wherein the interpretation of the assignment of resource blocks is based on the number of blocks

uplink resources. 13. An apparatus for decoding a provision, comprising:
a receiver for receiving provision on the downlink channel;
a computing platform for detecting a portion of a provision whose length has been adjusted; and
while the computing platform is configured to interpret the assignment of resource blocks of this part of the provision, and the interpretation of the assignment of resource blocks is based on the number of blocks

uplink resources. 14. The device according to item 13, further containing a computing platform for detecting part of the provision with the adjusted length containing the truncated or expanded assignment of resource blocks in accordance with the system bandwidth. 15. The device according to 14, in which the computing platform is additionally configured to interpret the assignment of resource blocks by:
determining whether

, and truncation in this case, the assignment of resource blocks to its b least significant bits, where b is the upper value

and
interpreting the truncated assignment of resource blocks in accordance with the rules for the conventional provision of a physical downlink control channel (PDCCH). 16. The device according to clause 15, in which the computing platform is additionally configured to interpret the assignment of resource blocks by:
determining whether

, and concatenation in this case, b bits with the value set to “0”, as high bits with the assignment of resource blocks, where b is the upper value

and
interpreting the extended assignment of resource blocks in accordance with the rules for the usual provision of PDCCH. 17. The device according to item 13, in which the computing platform is additionally configured to interpret additional truncation of the grant, by detecting at the physical level an indication that a new transmission is requested when receiving an uplink grant in a random access response (RAR). 18. The device according to 17, in which the computing platform is further configured to detect at the physical level that a new transmission is requested upon receipt of an uplink grant in the RAR. 19. The device according to item 13, in which the computing platform is additionally configured to interpret the provision with the adjusted length to satisfy the requirements of the format of a 1-bit flag of frequency hopping, 10-bit assignment of resource blocks, 5-bit modulation and coding scheme, 4-bit full power adjustment for scheduled physical uplink (PUSCH), 1-bit uplink delay, and 1-bit channel quality indicator (CQI) request. 20. The device according to item 13, in which additionally:
the computing platform is interpretable in response to determining that

assigning resource blocks as truncated to its lower b bits, where

moreover, the truncated assignment of resource blocks is interpreted in accordance with the rules for normal downlink control information (DCI) of the 0th format; and
the computing platform is interpretable in response to determining that

, assignment of resource blocks as extended, with previously added b bits with the value set to “0”, where

moreover, the extended assignment of resource blocks is interpreted in accordance with the rules for the regular DCI format of the 0th format. 21. The device according to item 13, in which the computing platform is additionally configured to interpret the truncated modulation and coding scheme (MCS), as indices 0-15, with the passage of maximum modulation. 22. A method of encoding a provision, including:
determination of the number of blocks

uplink resources and length adjustments based on system bandwidth;
resource block assignment coding based on the number of blocks

uplink resources to achieve a certain length adjustment; and
transmitting a grant, including assigning resource blocks, on a downlink channel. 23. The method according to item 22, further comprising adjusting the length of the provision by truncating or expanding the assignment of resource blocks in accordance with the system bandwidth. 24. The method according to item 23, further comprising encoding the assignment of resource blocks by:
determining whether

, and truncation in this case, the assignment of resource blocks to its b least significant bits, where b is the upper value

and
interpreting the truncated assignment of resource blocks in accordance with the rules for the conventional provision of a physical downlink control channel (PDCCH). 25. The method according to paragraph 24, further comprising encoding the assignment of resource blocks by:
determining whether

, and concatenation in this case, b bits with the value set to “0”, as high bits, with the assignment of resource blocks, where b is the upper value

and
interpreting the extended assignment of resource blocks in accordance with the rules for the usual provision of PDCCH. 26. The method of claim 22, further comprising additionally truncating the grant, by transmitting at the physical layer an indication that a new transmission is requested when transmitting the uplink grant in a random access response (RAR). 27. The method according to p. 26, further comprising transmitting at the physical level that a new transmission is requested when transmitting the uplink grant to the RAR. 28. The method according to item 22, further comprising coding the provision with the adjusted length to satisfy the format conditions of the 1-bit flag of the frequency hopping, 10-bit assignment of resource blocks, 5-bit modulation and coding scheme, 4-bit full power adjustments for a scheduled physical uplink (PUSCH), a 1-bit uplink delay, and a 1-bit channel quality indicator (CQI) request. 29. The method according to item 22, further comprising encoding the assignment of resource blocks by:
in response to the determination that

adjusting the assignment of resource blocks to its b least significant bits, where

in response to the determination that

adjusting the assignment of resource blocks by expanding with pre-added b bits with a value set to “0”, where

moreover, the interpretation of the extended assignment of resource blocks is performed in accordance with the rules for the regular DCI format of the 0th format. 30. The method according to item 22, further comprising truncating the modulation and coding scheme (MCS), as indices 0-15, with the passage of maximum modulation. 31. A processor for encoding a grant, comprising:
first module for determining the number of blocks

uplink resources and length adjustments based on system bandwidth;
a second module for encoding the assignment of resource blocks based on the number of blocks

uplink resources to achieve a certain length adjustment; and
a third module for transmitting the grant, including the assignment of resource blocks, on the downlink channel. 32. A computer-readable storage medium containing computer codes stored therein for encoding a presentation, comprising:
first set of codes prompting the computer to determine the number of blocks

uplink resources and length adjustment based on system bandwidth;
a second set of codes causing the computer to encode the assignment of resource blocks based on the number of blocks

uplink resources to achieve a certain length adjustment; and
a third set of codes causing the computer to transmit the provision, including the assignment of resource blocks, on the downlink channel. 33. A device for encoding a provision, comprising:
means for determining the number of blocks

uplink resources and length adjustments based on system bandwidth;
means for encoding the assignment of resource blocks based on the number of blocks

uplink resources to achieve a certain length adjustment; and
means for transmitting the grant, including the assignment of resource blocks, on the downlink channel. 34. A device for encoding a provision, comprising:
computing platform for determining the number of blocks

uplink resources and length adjustments based on system bandwidth;
wherein the computing platform is configured to encode the assignment of resource blocks based on the number of blocks

uplink resources to achieve a certain length adjustment; and
a transmitter for transmitting a grant, including assigning resource blocks, on a downlink channel. 35. The device according to clause 34, in which the computing platform is additionally configured to adjust the length of the provision by truncating or expanding the assignment of resource blocks in accordance with the system bandwidth. 36. The device according to clause 35, in which the computing platform is additionally configured to encode the assignment of resource blocks by:
determining whether

, and truncation in this case, the assignment of resource blocks to its b least significant bits, where b is the upper value

and
interpreting the truncated assignment of resource blocks in accordance with the rules for the conventional provision of a physical downlink control channel (PDCCH). 37. The device according to clause 36, in which the computing platform is additionally configured to encode the assignment of resource blocks by:
determining whether

, and concatenation in this case, b bits with the value set to “0”, as high bits, with the assignment of resource blocks, where b is the upper value

and
interpreting the extended assignment of resource blocks in accordance with the rules for the usual provision of PDCCH. 38. The device according to clause 34, in which the computing platform is additionally configured to further truncate the grant, by transmitting at the physical layer an indication that a new transmission is requested when transmitting the uplink grant in a random access response (RAR). 39. The device according to § 38, further comprising a transmitter for transmitting at the physical layer that a new transmission has been requested in transmitting an uplink grant to the RAR. 40. The device according to clause 34, in which the computing platform is additionally configured to encode the provision with the adjusted length to satisfy the format requirements of the 1-bit flag of the frequency hopping, 10-bit assignment of resource blocks, 5-bit modulation and coding scheme, 4-bit full power adjustment for scheduled physical uplink (PUSCH), 1-bit uplink delay, and 1-bit channel quality indicator (CQI) request. 41. The device according to clause 34, in which additionally:
the computing platform is adapted to be adjusted in response to determining that

assigning resource blocks to its b least significant bits, where

wherein the truncated assignment of resource blocks is interpreted in accordance with the rules for normal downlink control information (DCI) of the 0th format; and
the computing platform is adapted to be adjusted in response to determining that

assigning resource blocks by expanding with pre-added b bits with a value set to “0”, where

moreover, the interpretation of the extended assignment of resource blocks is performed in accordance with the rules for the regular DCI format of the 0th format. 42. The device according to clause 34, in which the computing platform is additionally configured to truncate the modulation and coding scheme (MCS), as indices 0-15, with the passage of maximum modulation.

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