(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2006/0088058 A1
`Eckert et al.
`(43) Pub. Date:
`Apr. 27, 2006
`
`US 20060O88058A1
`
`(54) DATA LINK LAYER PROTOCOL UNIT,
`MOBILE RADIO DEVICES, MOBILE RADIO
`NETWORK CONTROL UNIT AND METHOD
`FOR READING DATA FROMA PLURALITY
`OF DATA LINK LAYER PROTOCOL BUFFER
`STORAGES
`
`(75) Inventors: Michael Eckert, Braunschweig (DE):
`Hyung-Nam Choi, Hamburg (DE);
`Martin Wuschke, Meine (DE)
`Correspondence Address:
`DARBY & DARBY P.C.
`P. O. BOX 5257
`NEW YORK, NY 10150-5257 (US)
`(73) Assignee: Infineon Technologies AG, Munich (DE)
`(21) Appl. No.:
`11/238,645
`
`(22) Filed:
`
`Sep. 28, 2005
`
`(30)
`
`Foreign Application Priority Data
`
`Sep. 29, 2004 (DE).......................... 10 2004 O47 349.8
`
`Publication Classification
`
`(51) Int. Cl.
`(2006.01)
`H04 3/22
`(52) U.S. Cl. .............................................................. 370/469
`
`(57)
`
`ABSTRACT
`
`Each transport format contains control parameters according
`to which data are mapped from at least one logical channel
`onto at least one transport channel by a data link layer
`protocol unit, with the control parameters in the transport
`formats containing information regarding that or those data
`link layer protocol buffer storages and/or that or those data
`link layer data streams from which the data to be transmitted
`need to be transmitted in a data transmission time interval.
`
`
`
`MAC COntrol
`
`
`Ex.1005 / Page 1 of 25Ex.1005 / Page 1 of 25
`
`TESLA, INC.TESLA, INC.
`
`

`

`Patent Application Publication Apr. 27, 2006 Sheet 1 of 5
`
`US 2006/0088058 A1
`
`100
`
`FIG 1
`
`103
`
`UTRAN is
`
`
`
`
`
`13
`lub
`
`
`Ex.1005 / Page 2 of 25Ex.1005 / Page 2 of 25
`
`TESLA, INC.TESLA, INC.
`
`

`

`Patent Application Publication Apr. 27, 2006 Sheet 2 of 5
`
`US 2006/0088058 A1
`
`FIG 2
`
`
`
`
`
`S
`
`
`
`
`
`
`
`
`
`
`
`
`
`200
`
`L3
`
`COntrol
`
`
`
`
`
`
`
`
`
`
`206 L2/PDCP
`piece
`D sist
`EY
`BM
`210-t
`ris “sists
`Ele
`1. L2/RLC
`t Ecstate
`RC2
`CPCE - - E
`SSES208
`MAC
`
`
`
`L2/MAC
`
`
`
`
`
`2O2
`
`201
`
`L1
`
`
`Ex.1005 / Page 3 of 25Ex.1005 / Page 3 of 25
`
`TESLA, INC.TESLA, INC.
`
`

`

`Patent Application Publication Apr. 27, 2006 Sheet 3 of 5
`
`US 2006/0088058 A1
`
`FIG 3
`
`MAC COntrol
`
`FIG 4
`
`
`
`MAC Control
`
`
`Ex.1005 / Page 4 of 25Ex.1005 / Page 4 of 25
`
`TESLA, INC.TESLA, INC.
`
`

`

`Patent Application Publication Apr. 27, 2006 Sheet 4 of 5
`
`US 2006/0088058 A1
`
`FIG 5
`
`Information Element/
`Priority Queue
`>PQ Identity
`> Choice PQ weighting
`
`501
`
`502
`
`500
`-1
`Type and Semantics
`op <no
`PQ identity
`
`>>explicit PQ Weighting
`>>PQ Weighting band
`
`OP
`
`
`
`
`
`(SS)
`
`503 >>>OWer PQ bOrder
`
`
`
`>>>upper PQ bOrder
`
`(SS)
`
`
`
`504
`
`505
`
`vaen.
`
`
`Ex.1005 / Page 5 of 25Ex.1005 / Page 5 of 25
`
`TESLA, INC.TESLA, INC.
`
`

`

`Patent Application Publication Apr. 27, 2006 Sheet 5 of 5
`
`US 2006/0088058 A1
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`709119 919 9 ||9 919 9 ||9 819
`
`108
`
`
`Ex.1005 / Page 6 of 25Ex.1005 / Page 6 of 25
`
`TESLA, INC.TESLA, INC.
`
`

`

`US 2006/0O88058 A1
`
`Apr. 27, 2006
`
`DATA LINK LAYER PROTOCOL UNIT, MOBILE
`RADIO DEVICES, MOBILE RADIO NETWORK
`CONTROL UNIT AND METHOD FOR READING
`DATA FROMA PLURALITY OF DATA LINK
`LAYER PROTOCOL BUFFER STORAGES
`
`CROSS-REFERENCE TO RELATED
`APPLICATION
`0001. This application claims priority to German Patent
`Application Serial No. 10 2004 047349.8, which was filed
`on Sep. 29, 2005.
`
`FIELD OF THE INVENTION
`0002 The invention relates to a data link layer protocol
`unit, mobile radio devices, a mobile radio network control
`unit and also a method for reading data from a plurality of
`data link layer protocol buffer storages.
`
`BACKGROUND OF THE INVENTION
`0003 Such a mobile radio device, such a mobile radio
`network control unit and Such a method are known within
`the context of the mobile radio system UMTS (Universal
`Mobile Telecommunications System).
`0004. A UMTS mobile radio system normally has a core
`network (CN), a mobile radio access network (UMTS Ter
`restrial Radio Access Network, UTRAN) and also a large
`number of mobile radio terminals (User Equipment, UE). In
`UMTS, a transmission mode is provided, called FDD (Fre
`quency Division Duplex) mode, which involves separate
`signal transmission taking place in the uplink direction
`(uplink direction denotes a signal transmission direction
`from a mobile radio terminal to a respective base station in
`the mobile radio access network) and in the downlink
`direction (downlink direction denotes a signal transmission
`direction from a respective base station associated with the
`mobile radio terminal in the mobile radio access network to
`the mobile radio terminal) through separate allocation of
`frequencies or frequency ranges.
`0005 For the purpose of transmitting data between a
`mobile radio terminal and a respective base station in a
`mobile radio cell, UMTS defines an air interface which is
`divided into three protocol layers. An overview and a
`detailed description of the air interface protocol layers based
`on UMTS can be found in 3GPP TS 25.301, Technical
`Specification, Third Generation Partnership Project; Tech
`nical Specification Group Radio Access Network; Radio
`Interface Protocol Architecture (Release 1999).
`0006) One of the three protocol layers of the UMTS air
`interface is known as the Radio Resource Control (RRC)
`protocol layer. The RRC protocol or the RRC protocol layer
`is responsible for setting up and clearing down and also for
`(re)configuring physical channels, transport channels, logi
`cal channels, signalling radio bearers and radio bearers, and
`also for negotiating all parameters of the protocol layers of
`layer 1 and layer 2 on the basis of UMTS. To this end, the
`units of the RRC layer in the mobile radio terminal and in
`the mobile radio network control unit use the signalling
`radio bearers to interchange appropriate RRC messages, as
`described in 3GPP TS 25.331, Technical Specification, Third
`Generation Partnership Project; Technical Specification
`Group Radio Access Network; RRC Protocol Specification
`(Release 1999).
`
`0007 For the purpose of management, generally the
`management of mobile radio transmission resources in the
`mobile radio terminal within the context of the uplink packet
`data transmission, it is known that the mobile radio terminal
`communicates information about the Volume of data traffic
`in a transport channel to a mobile radio network control unit
`(Radio Network Controller, RNC) at the level of the RRC
`protocol layer. This is done using “measurement report
`messages'. In this connection, as table 1 below shows, data
`buffer storage filling levels, i.e. the filling level of the data
`buffer storages in the RLC units, for the transport channel in
`question are indicated to the currently competent mobile
`radio network control unit. In other words, this means that
`in line with 3GPP TS 25.331, Technical Specification, Third
`Generation Partnership Project; Technical Specification
`Group Radio Access Network; RRC Protocol Specification
`(Release 1999) the mobile radio network control unit is sent
`notification at the RRC layer level regarding how many data
`items to be transmitted there are at present in the buffer
`storages in the RLC units of the respective mobile radio
`terminal.
`
`0008. In this connection, mobile radio transmission
`resources are to be understood, in particular, to mean the
`transmission power of the mobile radio terminal, the number
`and also the spreading factor of the allocated CDMA codes.
`0009 Table 1 shows an example of such a measurement
`report list, as described in 3GPP TS 25.331, Technical
`Specification, Third Generation Partnership Project; Tech
`nical Specification Group Radio Access Network; RRC
`Protocol Specification (Release 1999):
`
`TABLE 1.
`
`Information
`Element Group
`l8le
`
`Traffic
`volume
`measurement
`results
`>RB Identity
`
`>RLC Buffer
`Payload
`
`Need Multi
`
`OP 1 to
`<maxRB>
`
`MP
`
`OP
`
`>Average of
`RLC Buffer
`Payload
`
`OP
`
`>Variance of
`RLC Buffer
`
`OP
`
`Type and
`reference
`
`Semantics
`description
`
`RB Identity
`O.3.4.1 6
`Enumerated
`(O, 4,
`8, 16,
`32, 64,
`28, 256,
`512, 1024,
`2K, 4K,
`8K, 16K,
`32K, 64K,
`28K, 256K,
`512K, 1024K)
`Enumerated
`(O, 4,
`8, 16,
`32, 64,
`28, 256,
`512, 1024,
`2K, 4K,
`8K, 16K,
`32K, 64K,
`128K, 256K,
`512K, 1024K)
`Enumerated
`(O, 4,
`
`In bytes
`And N
`Kbytes = N* 1024
`bytes. Twelve
`spare values
`are needed.
`
`In bytes And
`N
`Kbytes = N* 1024
`bytes. Twelve
`spare values
`are needed.
`
`In bytes And
`N
`
`
`Ex.1005 / Page 7 of 25Ex.1005 / Page 7 of 25
`
`TESLA, INC.TESLA, INC.
`
`

`

`US 2006/0O88058 A1
`
`Apr. 27, 2006
`
`Information
`Element Group
`l8le
`
`Payload
`
`TABLE 1-continued
`
`Need Multi
`
`Type and
`reference
`
`Semantics
`description
`
`Kbytes = N* 1024
`8, 16, 32,
`bytes. Two
`64, 128, 256,
`512, 1024, 2K, spare values
`4K, 8K, 16K) are needed.
`
`0010. Using this information, the mobile radio network
`control unit can configure the mobile radio terminal as
`appropriate, for example in order to restrict or expand the
`usable transport formats of a mobile radio terminal or to
`perform handover to another mobile radio cell, reconfigu
`ration of the dedicated physical channels or an RRC state
`change, particularly from a first RRC state CELL DCH to
`a second RRC state CELL FACH.
`0011. The measurement result list shown in Table 1 is
`thus transmitted from an RRC unit in the mobile radio
`terminal to the RRC unit in the corresponding mobile radio
`network control unit, and the respective RRC data buffer
`storage filling level is indicated for each radio bearer (RB).
`0012. The standardization committee 3GPP (3rd Genera
`tion Partnership Project) is currently, as described in RP
`04.0081, Proposed Work Item on FDD Enhanced Uplink,
`TSG RAN Meeting #23, Phoenix, USA, Mar. 10 12 2004,
`working on improving the packet data transmission via
`dedicated transport channels in the uplink, i.e. for the uplink
`direction at the UMTS air interface for the FDD mode, with
`a view to increasing the data throughput and the transmis
`sion speed. To achieve better differentiation from the already
`existing dedicated transport channel DCH, a new dedicated
`transport channel called Enhanced Dedicated Channel
`(E-DCH) has been introduced for this purpose. The funda
`mental characteristics of this new transport channel include
`the application of a Hybrid Automatic Repeat Request
`method (HARQ method) based on the N-channel stop&wait
`method, Scheduling controlled by the base station, also
`called NodeB in UMTS, and also frame lengths of less than
`or equal to 10 ms.
`0013 The N-channel stop&wait HARQ method is a
`transmission protection method in which a mobile radio
`terminal has a number of N “HARQ processes' configured
`for it, with an HARQ process representing a respective
`instance of the stop&wait method. For each HARQ process,
`the data are transmitted to the network and are buffer-stored
`until the network receives acknowledgement of correctly
`received data (Acknowledgement, ACK). Otherwise, i.e. if
`the data have not been received correctly (Negative
`Acknowledgement, NACK), the data are transmitted to the
`network again.
`0014. The NodeB controlled scheduling is a method in
`which the scheduling in the mobile radio terminal, i.e. the
`selection of an appropriate transport format from a set of
`defined transport formats for the E-DCH transport channel,
`is controlled such that the nodeB can temporarily restrict or
`expand a mobile radio terminals use of transport formats
`from the set of defined transport formats for the E-DCH
`transport channel on the basis of the traffic situation in the
`respective radio cell.
`
`0015 To date, however, a decision has not yet been made
`regarding the details of how the data about the new transport
`channel E-DCH are to be transmitted via the UMTS air
`interface. One possible solution is to split the data according
`to their priorities over various data buffer storages, known as
`Priority Queues (PQ), which are then processed and hence
`transmitted with preference or with less preference accord
`ing to their importance, i.e. their priority.
`0016. As set out above, a transmission protection method
`(HARQ method) is applied in which the network sends the
`mobile radio terminal an acknowledgement about correctly
`or incorrectly received data. The mobile radio terminal
`contains various data buffer storages for this function too, in
`order to buffer-store the data prior to acknowledgement of
`correct receipt.
`0017. Both functions are performed within the MAC
`protocol layer in the newly provided subprotocol layer, i.e.
`what is known as a Medium Access Control Enhanced
`Uplink (MAC-e) entity, which is present, i.e. implemented,
`both on the terminal and on the network. On the network, the
`entity executing the communication protocol based on
`MAC-e can be found in the NodeB, i.e. in the UMTS base
`station.
`0018. In addition, UMTS communication standard
`release 5 for the downlink (downlink transmission direction)
`contains a method, called High Speed Downlink Packet
`Access (HSDPA), for improving the air interface for the
`packet data transmission via the shared transport channel
`High Speed Downlink Shared CHannel (HS-DSCH). In
`comparable fashion to the enhanced uplink medium access
`control protocol, the fundamental characteristics of the
`HSDPA method are based on the application of an N-chan
`nel stop&wait HARQ method, NodeB controlled scheduling
`and frame lengths of less than 2 ms. These functions are
`performed in the medium access control Subprotocol layer
`MAC-hs (Medium Access Control High Speed), with the
`units which implement the MAC-hs protocol being provided
`both on the terminal and on the network, in this case usually
`in a mobile radio base station.
`0019. The MAC-hs subprotocol layer receives the data
`which are to be processed in the downlink transmission
`direction, i.e. the protocol data units which are processed in
`the MAC-hs subprotocol layer, from the MAC-d subproto
`col layer using “MAC-d flows in the form of MAC-d
`protocol data units, which correspond to the MAC-hs ser
`vice data units (SDU). The protocol data units formed by the
`MAC-hs subprotocol layer, i.e. the “MAC-hs PDUs', are
`transmitted via the transport channel called HS-DSCH to the
`physical transmission layer, which then uses the air interface
`to transmit them via the physical channel HS-PDSCH (High
`Speed Physical Downlink Shared Channel) to a subscriber
`terminal.
`0020. An MAC-hs protocol data unit comprises an MAC
`his header field (header) and one or more MAC-hs SDUs. In
`each transmission time interval (TTI) of 2 ms, it is possible
`to transmit a maximum of one MAC-hs PDU. The MAC-hs
`control data header, i.e. the header field of the MAC-hs
`PDU, has a variable length. In the MAC-hs subprotocol
`layer, the data to be transmitted are buffer-stored in data
`buffer storages, known as Priority Queues (PQ), according
`to their priority. In line with the MAC-hs subprotocol, as
`described in 3GPP TS 25.321, Technical Specification, Third
`
`Ex.1005 / Page 8 of 25Ex.1005 / Page 8 of 25
`
`TESLA, INC.TESLA, INC.
`
`

`

`US 2006/0O88058 A1
`
`Apr. 27, 2006
`
`Generation Partnership Project; Technical Specification
`Group Radio Access Network; Medium Access Control
`(MAC) Protocol Specification, all the MAC-hs SDUs in a
`transmission time interval belong to the same priority queue,
`i.e. in each transmission time interval only MAC-hs SDUs
`having the same priority are transmitted on an HS-DSCH
`transport channel.
`0021. In line with the HSDPA method, a “Transport
`Format Resource Indicator' (TFRI) is provided which is
`transmitted to the individual subscriber terminals in a
`respective mobile radio cell via the physical channel called
`High Speed Shared Control CHannel (HS-SCCH). Using the
`Transport Format Resource Indicator, the respective sub
`scriber terminal can derive the respective sizes of the trans
`port blocks of an MAC-hs PDU in line with 3GPP TS
`25.321, Technical Specification, Third Generation Partner
`ship Project; Technical Specification Group Radio Access
`Network; Medium Access Control (MAC) Protocol Speci
`fication. Signals are thus sent to indicate the size of the
`respective MAC-hs PDU which is being transmitted on the
`associated HS-PDSCH.
`0022. In line with the HSDPA method, in each data
`transmission time interval the data from just one priority
`queue are transmitted via the HS-DSCH, which is why the
`control data header of an MAC-hs protocol data unit has a
`very simple structure and it is necessary to transmit only the
`information regarding the priority queue from which the
`data to be transmitted originate.
`0023. In line with the UMTS Enhanced Uplink method,
`on the other hand, the data having various priorities, i.e. the
`data from various priority queues, are transmitted in an
`MAC-e protocol data unit within a data transmission time
`interval.
`0024 One possible solution to signalling the association
`of an MAC-e SDU, i.e. an MAC-d PDU, for example, with
`a respective priority queue and with a respective MAC-d
`data stream would be to add to each MAC-e SDU a control
`data header with an identification of the respective MAC-d
`flow (flow-ID, FID) and then to add a control data header
`with an identification of the respective priority queue (queue
`ID, QID) to every single data packet from a priority queue
`before transmission, so as then to be able to split the data at
`the receiver again as appropriate in the data link layer.
`0.025
`However, this would be disadvantageous on
`account of the enormous Volume of additional signalling
`data in the control data header (large overhead) which is
`required.
`0026. In line with the HSDPA method, the TFRI is used
`to signal the size of an MAC-hs protocol data unit. This is
`disadvantageous in the case of E-DCH particularly because
`data from various priority queues need to be transmitted in
`each data transmission time interval.
`0027. On the basis of the prior art, it is thus merely
`possible to signal the total size of an MAC-e protocol data
`unit but not how the data of an MAC-e protocol data unit
`need to be made up, i.e. from which priority queues how
`many and using what packet size it is necessary to transmit
`data in an MAC-e protocol data unit.
`SUMMARY OF THE INVENTION
`0028. A data link layer protocol unit in a mobile radio
`device for mapping data which are to be transmitted using
`
`the mobile radio device from at least one logical channel
`onto at least one transport channel. The data link protocol
`unit has a plurality of data link layer protocol buffer stor
`ages, at least one transport format memory, at least one
`transport format selection unit, and a data link layer protocol
`buffer storage reading device. The plurality of data link layer
`protocol buffer storages for buffer storing logical channel
`data which are to be transmitted from one or more data link
`layer data streams of the logical channel data. The at least
`one transport format memory for storing a plurality of
`transport formats, with each transport format containing
`control parameters according to which the data are mapped
`from the at least one logical channel onto the at least one
`transport channel by the data link layer protocol unit, where
`the control parameters in at least some of the transport
`formats contain information regarding that or those data link
`layer protocol buffer storages and/or that or those data link
`layer data streams from which the data to be transmitted
`need to be transmitted in a data transmission time interval.
`The at least one transport format selection unit for selecting
`from the plurality of stored transport formats a respective
`transport format to be used. The a data link layer protocol
`buffer storage reading device which is set up Such that it
`reads the data buffer stored in the data link layer protocol
`buffer storages on the basis of the selected transport format.
`0029. A mobile radio device having at least one data link
`layer protocol unit, a transport format memory for storing a
`plurality of transport formats, with a transport format con
`taining control parameters according to which the data are
`mapped from at least one logical channel onto at least one
`transport channel by the data link layer protocol unit in
`another mobile radio device, where the control parameters in
`at least Some of the transport formats contain information
`regarding that or those data link layer protocol buffer Stor
`ages and/or that or those data link layer data streams from
`which the data to be transmitted need to be transmitted in a
`data transmission time interval, and a transport format
`transmission device which is set up to transmit the transport
`formats to the other mobile radio device.
`0030. A mobile radio network control unit having a
`transport format memory for storing a plurality of transport
`formats, with a transport format containing control param
`eters according to which the data are mapped from at least
`one logical channel onto at least one transport channel by the
`data link layer protocol unit in another mobile radio device,
`where the control parameters in at least some of the transport
`formats contain information regarding that or those data link
`layer protocol buffer storages and/or that or those data link
`layer data streams from which the data to be transmitted
`need to be transmitted in a data transmission time interval,
`and a transport format transmission device which is set up to
`transmit the transport formats to the other mobile radio
`device.
`0031. A method for reading data from a plurality of data
`link layer protocol buffer storages which are associated with
`at least one data link layer protocol unit, performed in a
`mobile radio device, the method comprising the step of
`selecting a transport format from a plurality of stored
`transport formats, with a transport format containing control
`parameters according to which the data are mapped from at
`least one logical channel onto at least one transport channel
`by the data link layer protocol unit, where the control
`parameters in at least Some of the transport formats contain
`
`Ex.1005 / Page 9 of 25Ex.1005 / Page 9 of 25
`
`TESLA, INC.TESLA, INC.
`
`

`

`US 2006/0O88058 A1
`
`Apr. 27, 2006
`
`information regarding that or those data link layer protocol
`buffer storages and/or that or those data link layer data
`streams from which the data to be transmitted need to be
`transmitted in a data transmission time interval, wherein the
`data buffer stored in the data link layer protocol buffer
`storages are read on the basis of the control parameters.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`0032 Exemplary embodiments of the invention are illus
`trated in the figures and are explained in more detail below.
`In the figures,
`0033)
`0034 FIG. 1 shows a communication system based on an
`exemplary embodiment of the invention;
`0035 FIG. 2 shows an illustration of a protocol structure
`for the UMTS air interface;
`0.036
`FIG. 3 shows an illustration of the units in an
`MAC-e protocol layer based on a first exemplary embodi
`ment of the invention;
`0037 FIG. 4 shows an illustration of the units in an
`MAC-e protocol layer based on a second exemplary
`embodiment of the invention;
`0038 FIG. 5 shows an illustration of an RRC message
`for signalling the weighting values and the weighting value
`ranges based on an exemplary embodiment of the invention;
`and
`FIG. 6 shows an outline to illustrate the processing
`0.039
`of the data in an MAC-e protocol layer based on the
`exemplary embodiments of the invention.
`
`DETAILED DESCRIPTION OF PREFERRED
`EMBODIMENTS OF THE INVENTION
`0040. The invention is based on the problem of mapping
`data from at least one logical channel onto at least one
`transport channel in a data link layer protocol unit in simple
`fashion with reduced signalling complexity in comparison
`with known procedures.
`0041. The problem is solved by a data link layer protocol
`unit, by mobile radio devices, by a mobile radio network
`control unit and also by a method for reading data from a
`plurality of data link layer protocol buffer storages.
`0.042 A data link layer protocol unit in a mobile radio
`device for mapping data which are to be transmitted using
`the mobile radio device from at least one logical channel
`onto at least one transport channel has a plurality of data link
`layer protocol buffer storages for buffer-storing the logical
`channel's data which are to be transmitted from one or more
`data link layer data streams of the logical channel's data. In
`addition, at least one transport format memory for storing a
`plurality of transport formats is provided. Each transport
`format contains control parameters according to which the
`data are mapped from the at least one logical channel onto
`the at least one transport channel by the data link layer
`protocol unit. At least Some of the transport formats, in other
`words one or more, preferably all of the transport formats,
`contain, as control parameters, information specifying that
`or those data link layer protocol buffer storages and/or that
`or those data link layer data streams from which the data to
`be transmitted need to be transmitted in a data transmission
`time interval. A likewise provided transport format selection
`
`unit is set up to select a respective transport format to be
`used from the plurality of storaged transport formats for at
`least one data transmission time interval. In addition, a data
`link layer protocol buffer storage reading device is provided
`which is set up such that it reads the data buffer-storaged in
`the data link layer protocol buffer storages on the basis of the
`selected transport format.
`0043. Each transport format thus clearly contains data
`transmission characteristics which are used for data trans
`mission on the basis of a respective transport format. In
`other words, this means that each transport format contains
`the control parameters for setting the respective parameters
`used in the data link layer for mapping the data which are to
`be transmitted onto the transport channels which are used for
`the data transmission in the physical layer, for example the
`block size, the number of blocks in a set of blocks and the
`indication of the transmission time interval (TTI).
`0044) Clearly, the procedure described above means that
`a respective transport format is selected on the mobile radio
`device's data link layer protocol level for a data transmission
`time interval, and the transport format indicates, in respec
`tively dedicated form, that or those data link layer protocol
`buffer storages and/or that or those data link layer data
`streams from which the data which are to be transmitted, i.e.
`the data which are to be mapped onto the transport channel,
`need to be read from the data link layer protocol buffer
`Storages.
`0045 Hence, within a transport format, there is clearly
`signalling regarding those buffer storages or those data
`streams from the data streams provided above the data link
`layer from which the data need to be mapped onto the
`transport channel, particularly onto a transport block, within
`the data transmission time interval.
`0046. A mobile radio device has at least one data link
`layer protocol unit having the features presented above.
`0047 Another mobile radio device has at least one data
`link layer protocol unit and also a transport format memory
`for storing a plurality of transport formats, with one or more,
`preferably each, transport format containing control param
`eters according to which the data are mapped from at least
`one logical channel onto at least one transport channel by the
`data link layer protocol unit in another mobile radio device,
`where the control parameters in at least some of the transport
`formats contain information regarding that or those data link
`layer protocol buffer storages and/or that or those data link
`layer data streams from which the data to be transmitted
`need to be transmitted in a data transmission time interval.
`0048. In addition, a transport format transmission device
`is provided which is set up to transmit the transport formats
`to the other mobile radio device.
`0049. A mobile radio network control unit has a transport
`format memory for storing a plurality of transport formats,
`with a transport format containing control parameters
`according to which the data are mapped from at least one
`logical channel onto at least one transport channel by a data
`link layer protocol unit in another mobile radio device,
`where the control parameters in at least some of the transport
`formats contain information regarding that or those data link
`layer protocol buffer storages and/or that or those data link
`layer data streams from which the data to be transmitted
`need to be transmitted in a data transmission time interval.
`
`Ex.1005 / Page 10 of 25Ex.1005 / Page 10 of 25
`
`TESLA, INC.TESLA, INC.
`
`

`

`US 2006/0O88058 A1
`
`Apr. 27, 2006
`
`In addition, the mobile radio network control unit has a
`transport format transmission device which is set up to
`transmit the transport formats to the other mobile radio
`device.
`0050. In a method for reading data from a plurality of
`data link layer protocol buffer storages which are associated
`with at least one data link layer protocol unit and which
`method is performed in a mobile radio device, a transport
`format is selected from a plurality of storaged transport
`formats, with a transport format containing control param
`eters according to which the data are mapped from at least
`one logical channel onto at least one transport channel by the
`data link layer protocol unit, where the control parameters in
`at least Some of the transport formats contain information
`regarding that or those data link layer protocol buffer Stor
`ages and/or that or those data link layer data streams from
`which the data to be transmitted need to be transmitted in a
`data transmission time interval. The data buffer-storaged in
`the data link layer protocol buffer storages are read on the
`basis of the control parameters.
`0051 Clearly, the invention can be seen in that a transport
`format now contains additional information regarding the
`data link layer protocol buffer storages and/or the data link
`layer data streams, said information being used to read data
`storaged in the data link layer buffer storages from the data
`link layer buffer storages.
`0.052
`Signalling this information in the transport formats
`allows or achieves very simple signalling of this informa
`tion, preferably on the network, for a mobile radio device.
`0053 Clearly, what is provided is thus an expanded
`transport format, Subsequently also called Enhanced Uplink
`transport format, which is used, during the mapping of data
`using the data link layer, to stipulate the makeup of the
`protocol data unit(s) formed by the data link layer protocol
`unit.
`0054. In this connection, for example when the mobile
`radio device is set up to communicate using the UMTS
`communication standard, a data link layer has one or more
`of the following sublayers:
`0.055
`radio link control layer (RLC),
`0056 packet data convergence protocol layer (PDCP),
`0057 broadcast/multicast control layer (BMC),
`0058)
`medium access control layer (MAC).
`0059. In addition, the mobile radio device preferably
`contains a weighting memory which storages weighting
`values and/or weighting value ranges, with a respective
`weighting value and/or weighting value range being asso
`ciated with one of the data link layer protocol buffer stor
`ages. In other words, this means that at least one weighting
`value and/or one weighting value range is/are associated
`with each of the data link layer protocol buffer storages
`taken into account as part of the inventive procedure for
`reading the data buffer storages.
`0060. In this connection, it should be noted that the
`invention can be applied both to all and to just one or more
`sublayers of the data link layer, respectively, for example
`with the aforementioned sublayers or else the medium
`access control layer's sublayers described below. In other
`words, this means that the buffer storages provided in the
`
`respective Sublayer can respectively be assigned a weighting
`value and/or a weighting value range in each Sublayer
`individually or in all sublayers together.
`0061. In addition, the data link layer protocol buffer
`storage reading device is preferably set up such that it reads
`the data buffer-storaged in the data link layer protocol buffer
`storages from the data link layer protocol buffer storages in
`an order which is