WO2009130543A1 - Signalisation de partie de configuration semi-persistante par canal de commande de liaison descendante - Google Patents

Signalisation de partie de configuration semi-persistante par canal de commande de liaison descendante Download PDF

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Publication number
WO2009130543A1
WO2009130543A1 PCT/IB2008/051614 IB2008051614W WO2009130543A1 WO 2009130543 A1 WO2009130543 A1 WO 2009130543A1 IB 2008051614 W IB2008051614 W IB 2008051614W WO 2009130543 A1 WO2009130543 A1 WO 2009130543A1
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WIPO (PCT)
Prior art keywords
control information
resource allocation
receiving
persistent
access node
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PCT/IB2008/051614
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English (en)
Inventor
Lars E. Lindh
Esa M. Malkamaki
Jussi K. Ojala
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Nokia Corporation
Nokia, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Nokia Corporation, Nokia, Inc. filed Critical Nokia Corporation
Priority to PCT/IB2008/051614 priority Critical patent/WO2009130543A1/fr
Publication of WO2009130543A1 publication Critical patent/WO2009130543A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

Definitions

  • the exemplary and non-limiting embodiments of this invention relate generally to wireless communication systems, methods, devices and computer programs and, more specifically, relate to techniques to signal resource allocation configurations from a network access node to a user equipment. i n
  • E-UTRAN also referred to as UTRAN LTE or as E UTRA
  • the current working assumption is that the DL access technique is OFDMA, and the UL access technique is SC-FDMA.
  • FIG. IA reproduces Figure 4 of 3GPP TS 36.300, and shows the overall architecture of the E-UTRAN system.
  • the E-UTRAN system includes eNBs, providing the E-UTRA user plane ( PDC P/RLC/M AC/PHY) and control plane (RRC) protocol terminations towards the UE.
  • the eNBs are interconnected with each other by means of an X2 interface.
  • the eNBs are also connected by means of an Sl interface to an EPC, more specifically to a MME (Mobility Management Entity) by means of a Sl-MME interface and to a Serving Gateway (S-GW) by means of a S l-U interface.
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • the eNB hosts the following functions: functions for Radio Resource Management: Radio Bearer Control, Radio Admission Control, Connection Mobility Control. Dynamic allocation of resources to UEs in both uplink and downlink (scheduling);
  • selection of a MME at UE attachment selection of a MME at UE attachment; routing of User Plane data towards Serving Gateway; scheduling and transmission of paging messages (originated from the MME); scheduling and transmission of broadcast information (originated from the MME or
  • One optimization technique is to use a persistent or semi-persistent allocation of transmission resources.
  • resources are assigned for transmission in the DL or UL for a period longer than for a normal (one time) allocation.
  • semi-persistent scheduling is to be accommodated by the system specification.
  • the periodicity pattern of transmission/reception resources are assigned to the UE with higher layer signaling (e.g., RRC signaling) then the UE is enabled to transmit and/or receive in the assigned resources without explicit L1/L2 control signaling (i.e., without the use of the PDCCH).
  • FIG. 2 An example is shown in Figure 2, where "talk-spurt based" semi-persistent allocation is described for a VoIP connection.
  • the RRC signaling is used to assign a 20ms periodicity pattern to the UE.
  • the time and frequency resources and TFI are assigned to the UE with L1/L2 control signaling (i.e.. with the PDCCH).
  • the UE stores the time and frequency resources and TFI information, and this information informs the UE that it can either transmit (UL) or receive (DL) the assigned format of packets with these resources using the known periodicity pattern (signaled via the RRC).
  • the re-transmissions in the DL are sent using L1/L2 control signaling as the semi-persistent scheduling is typically only applied for the initial transmission (not for re transmissions if needed).
  • the exemplary embodiments of this invention provide a method that includes receiving a first control information from a network access node, the first control information comprising a plurality of fields defining control information elements that are relevant to a resource allocation; receiving a second control information from the network access node, the second control information comprising a plurality of fields defining control information elements that are relevant to the resource allocation; and declaring the resource allocation to be a persistent resource allocation if at least one of the plurality of fields of the second control information is the same as one of the plurality of fields of the first control information.
  • the exemplary embodiments of this invention provide a computer readable medium that stores program instructions, where execution of the program instructions results in performance of operations that include receiving a first control information from a network access node, the first control information comprising a plurality of fields defining control information elements that are relevant to a resource allocation: receiving a second control information from the network access node, the second control information comprising a plurality of fields defining control information elements that are relevant to the resource allocation; and declaring the resource allocation to be a persistent resource allocation if at least one of the plurality of fields of the second control information is the same as one of the plurality of fields of the first control information.
  • the exemplary embodiments of this invention provide an apparatus that includes a controller coupled with a wireless transmitter, a wireless receiver and a memory.
  • the controller is configured to receive a first control information from a network access node, the first control information comprising a plurality of fields defining control information elements that are relevant to the resource allocation.
  • the controller is further configured to receive a second control information from the network access node, the second control information also comprising a plurality of fields defining control information elements that are relevant to the resource allocation.
  • the controller is further configured to declare the resource allocation to be a persistent resource allocation if at least one of the plurality of fields of the second control information is the same as one of the plurality of fields of the first control information, and to store in the memory control information elements received with the second resource allocation for use during the persistent resource allocation.
  • the exemplary embodiments of this invention provide a method that includes composing a first control information for a user equipment, the first control information comprising a plurality of fields defining control information elements that are relevant to a resource allocation; transmitting the first control information to the user equipment; composing a second control information for the user equipment, the second control information comprising a plurality of fields defining control information elements that are relevant to the resource allocation, where the resource allocation is made to be a persistent resource allocation by making at least one of the plurality of fields of the second control information to be the same ab one of the plurality of fields of the first control information and transmitting the second control information to the user equipment.
  • the exemplary embodiments of this invention provide an apparatus that includes a wireless transmitter; a wireless receiver; a memory; and a controller coupled with the wireless transmitter, the wireless receiver and the memory, said controller configured to compose and transmit a first control information for a user equipment, the first control information comprising a plurality of fields defining control information elements that are relevant to a resource allocation, said controller being further configured to compose and transmit a second control information for the user equipment, the second control information comprising a plurality of fields defining control information elements that are relevant to the resource allocation, where the resource allocation is made to be a persistent resource allocation by making at least one of the plurality of fields of the second control information to be the same as one of the plurality of fields of the first control information.
  • Figure IA reproduces Figure 4 of 3GPP TS 36.300, and shows the overall architecture of the E-UTRAN system.
  • Figure IB reproduces Figure 5.2.1 1 of 3GPP TS 36.21 1 and shows an UL resource grid, including a physical resource block.
  • Figure 1C reproduces Table 5.2.3 1 of 3GPP TS 36.21 1 and shows resource block parameters.
  • Figure 2 shows an example of talk spurt based semi-persistent scheduling.
  • Figure 3 shows a simplified block diagram of various electronic devices that are suitable for use in practicing the exemplary embodiments of this invention.
  • Figure 4 shows an example of semi-persistent allocation of the UL for a VoIP connection in accordance with the exemplary embodiments of this invention.
  • Figure 5 shows an example of a semi-persistent allocation for the case of UL VoIP packet traffic in accordance with the exemplary embodiments of this invention.
  • Figure 6 is a logic flow diagram that illustrates the operation of a method, and a result of execution of computer program instructions, in accordance with the exemplary embodiments of this invention.
  • Figure 7 is a logic flow diagram that illustrates the operation of a further method, and a result of execution of computer program instructions, in accordance with the exemplary embodiments of this invention.
  • a wireless network 1 is adapted for communication with an apparatus, such as a mobile communication device which may be referred to as a UE 10. via a network access node, such as a Node B (base station), and more specifically an eNB 12.
  • the network 1 may include a network control element (NCE) 14 that may include the MME/S GW functionality shown in Figure 1 , and which provides connectivity with a network 16. such as a telephone network and/or a data communications network (e.g., the internet).
  • NCE network control element
  • the UE 10 includes a data processor (DP) 1OA, a memory (MEM) 1OB that ctni'Ac o ni' ⁇ frr ⁇ m / PT? Of ⁇ 1 CiC* cmri c ⁇ frp ⁇ i ipnp ⁇ r /T? T ⁇ ⁇ trcmcpfM V( ⁇ r 1 OT ⁇ bidirectional wireless communications 1 1 with the eNB 12 via one or more antennas.
  • the eNB 12 also includes a DP 12A, a MEM 12B that stores a PROG 12C, and a suitable RF transceiver 12D.
  • the eNB 12 is coupled via a data path 13 to the NCE 14.
  • the data path 13 may be implemented as the Sl interface shown in Figure IA. At least one of the PROGs 1OC and 12C is assumed to include program instructions that, when executed by the associated DP. enable the electronic device to operate in accordance with the exemplary embodiments of this invention, as will be discussed below in greater detail.
  • the exemplary embodiments of this invention may be implemented at least in part by computer software executable by the DP 1OA of the UE 10 and by the DP 12A of the eNB 12. or by hardware, or by a combination of software and hardware.
  • the UE 10 may be assumed to also include a resource allocation reception unit (RARU) 1OE. a codec 1OF for use with an exemplary VoIP application, a MAC function or unit 1OG, a timer 1OH (typically part of the MAC function 10G), and a RRC function or unit 101.
  • the timer 1 OH may be set to indicate predetermined amount of time using a timer value received from RRC signaling.
  • the eNB 12 includes a resource scheduler function (SCHED) 12E. as well as MAC and RRC (and higher protocol layer) functions or units 12F. 12G.
  • the resource scheduler function 12E may be a part of the eNB 12 MAC function 12F.
  • the eNB 12 is assumed to be capable of composing and transmitting control information to the UE 10. which is assumed to be capable of recei ⁇ ing and interpreting the received control information, as described in detail below.
  • the various embodiments of the UE 10 can include, but are not limited to, cellular telephones, personal digital assistants (PDAs) having wireless communication capabilities, portable computers having wireless communication capabilities, image capture devices such as digital cameras having wireless communication capabilities, gaming devices ha ⁇ ing wireless communication capabilities, music storage and playback appliances having wireless communication capabilities, Internet appliances permitting wireless Internet access and browsing, as well as portable units or terminals that incorporate combinations of such functions.
  • PDAs personal digital assistants
  • portable computers having wireless communication capabilities
  • image capture devices such as digital cameras having wireless communication capabilities
  • gaming devices ha ⁇ ing wireless communication capabilities gaming devices ha ⁇ ing wireless communication capabilities
  • music storage and playback appliances having wireless communication capabilities
  • Internet appliances permitting wireless Internet access and browsing, as well as portable units or terminals that incorporate combinations of such functions.
  • the MEMs 1OB. 12B and 14B may be of any type suitable to the local technical en ⁇ ironment and may be implemented using any suitable data storage technology, such as semiconductor based memory devices, flash memory, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory.
  • the DPs 1OA. 12A and 14A may be of any type suitable to the local technical environment, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on a multicore processor architecture, as non-limiting examples.
  • general purpose computers special purpose computers
  • microprocessors microprocessors
  • DSPs digital signal processors
  • processors based on a multicore processor architecture, as non-limiting examples.
  • the phrases "persistent resource” allocation and scheduling and “semi- persistent" resource allocation and scheduling may be considered as being substantially equivalent, that is. to refer to a resource allocation that is meant to be used over a period of time for transmitting more than one data unit, such as more than one VoIP packet.
  • the persistent scheduling is configured by RRC signaling, i.e., the persistent scheduling feature is turned on/off by RRC signaling, and the periodicity of the persistent scheduling (e.g.. PS_PERIOD) is also given by RRC signaling.
  • the specific timing information, as well as the allocated resources and transport format parameters, are sent on the L1/L2 control channel (on the PDCCH) as a normal UL grant. If the UL grant is missed (there is no resulting UL transmission), the eNB 12 can resend the UL grant.
  • the exemplary embodiments of this invention provide a technique to reduce the probability of an occurrence of a false positive to an acceptable level by sending the persistent UL grant on the PDCCH two times, and the UE 10 is allowed to transmit on the UL using the persistent parameters only after receiving two identical persistent allocations.
  • this procedure ma ⁇ ' be viewed as doubling the CRC length to 32 bits. Since the content of the two allocations needs to be identical in order to be accepted by the RARU 1 OE of the UE 10, the
  • the UE 10 MAC function 1OG detects that there is a speech packet arriving from the codec 1OF, and that the UE 10 should send an uplink scheduling request (SR) to the eNB 12.
  • the SR is sent on a dedicated resource (D-SR).
  • D-SR dedicated resource
  • the scheduler 12E of the eNB 12 sends the UE 10 a first persistent uplink grant (a tentative persistent UL grant) by sending a L1/L2 UL grant which indicates that the persistent UL grant should be stored.
  • This first persistent UL grant may be considered as first control information containing control information elements.
  • the UE 10 stores the received persistent parameters in the memory 1 OB, while also interpreting the allocation as a dynamic one-time allocation, and then sends the VoIP packet using the received UL parameters (control information elements).
  • the eNB 12 knows that persistent allocation is actually needed and sends the second persistent UL grant of the persistent UL grant pair.
  • This second persistent UL grant may be considered as second control information also containing control information elements.
  • the UE 10 receives the second persistent UL grant, containing a resource allocation that may be identical to the resource allocation of the first persistent UL grant, the UE 10 is granted permission to use the allocated parameters persistently. If the second persistent UL grant is not received, then the UE 10 discards the stored parameters (e.g. after PS_PERJOD).
  • the UE 10 monitors the L1/L2 control channel in preconfigured TTIs (DRX), and if no valid UL allocation is given to the UE 10. the UE 10 is allowed to send an initial data transmission using the persistent resource (using a stored transport format).
  • DRX preconfigured TTIs
  • the retransmissions are allocated using the L1/L2 control channel, or they may be allocated in a non-adaptive manner by sending a NAK on the PHICH.
  • any SID (silence descriptor) frames may also be allocated "persistently". That is. when receiving a SR for a SID frame (note that the eNB 12 does not know whether the frame to be transmitted by the UE 10 is a SID frame, or a full VoIP packet, or something else), the eNB 12 may send the first persistent UL grant and, after receiving the SID frame, the eNB need not send the second persistent UL grant. In this case the LIE 10 discards the stored parameters of the first allocation, which is treated in this case as a dynamic, one time resource allocation.
  • the scheduler 12E of the eNB 12 may be considered to compose resource allocations for use by the UE 10, where the resource allocations are composed in accordance with the exemplary embodiments of this invention.
  • Figure 4 shows a semi-persistent allocation of the UL for a VoIP connection in accordance with the exemplary embodiments of this invention.
  • the semi-persistent allocation can be distinguished from a dynamically scheduled allocation in the PDCCH in several different ways.
  • a different C-RNTI is used than one used with a normal dynamic allocation.
  • the use of two PDCCHs in the same TTI, or in different TTIs, when triggering a semi-persistent allocation has the ability to dramatically decrease the false positive probability.
  • the C-RNTI is the UE 10 ID.
  • the UE 10 can thus have two C-RNTIs associated therewith, one related to dynamic scheduling and another related to semi-persistent scheduling (currently referred to as the Semi-Persistent Scheduling C-RNTI in the MAC specification.
  • the two PDCCHs (the pair of persistent UL allocations shown in Figure 4) can be sent in the same TTI, which has the advantage that the persistent allocation can be signaled more rapidly.
  • this approach uses more PDCCH resources in one TTI. which may have peak power and/or capacity implications.
  • the second PDCCH may be sent in the following TTI. This approach avoids any potential peak power and/or capacity issues, and also minimizes the delay, although additional PDCCH resources are still used.
  • the two PDCCHs are sent, one for each separate packet (as described abo ⁇ e).
  • Both PDCCHs indicate that they are semi-persistent allocations (e.g.. with a specific C-RNTI that is equal to the UE identification). However, the allocation becomes persistent only if certain criteria concerning the PDCCH content and reception time are met. Non-limiting examples of such criteria may include (but are not limited to) the following.
  • the two PDCCHs are sent (exactly) one PS_PERIOD apart, where PS_PERIOD is the periodicity of the semi-persistent allocation, and where the content of both PDCCHs is the same.
  • the two PDCCHs are sent within a given time limit, e.g.. PS_PERIOD and the content is the same.
  • TBS transport block size
  • MCS modulation and coding scheme
  • PRB physical resource block
  • the LTE Layer 1 (PHY) is defined in such a way as to adapt to various spectrum allocations.
  • the PHY layer specification can be found in 3GPP TS 36.213, V8.2.0 (2008-03), 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures (Release 8), and 3GPP TS 36.21 1. V8.2.0 (2008-03), 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical channels and modulation (Release 8).
  • 3GPP TS 36.212 V8.2.0 2008-03
  • 3rd Generation Partnership Project Technical Specification Group Radio Access Network
  • E-UTRA Evolved Universal Terrestrial Radio Access
  • Multiplexing and channel coding Release 8
  • Figure 5.2.1 1 shows the UL resource grid as currently defined.
  • the transmitted signal in each slot is described by the resource grid of subcarriers and N » mh ⁇ 'L SC-FDMA symbols.
  • the quantity N RB UL depends on the uplink transmission bandwidth configured in the cell and fulfils the relationship: l L
  • the set of allowed values for N RB 1 is given by 3GPP TS 36.104, Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) radio transmission and reception.
  • E-UTRA Evolved Universal Terrestrial Radio Access
  • BS Base Station
  • the number of SC-FDMA symbols in a slot depends on the cyclic prefix length configured by higher layers and is given in Table 5.2.3-1 , reproduced herein as Figure 1C.
  • Resource element (k.I) corresponds to the complex value a / , / .
  • Quantities ui / . corresponding to resource elements not used for transmission of a physical channel or a physical signal in a slot are set to zero.
  • Subclause 5.2.3 "Resource blocks”, defines a physical resource block as N, UI J L consecuti ⁇ e SC-FDMA symbols in the time domain and N ⁇ consecutive subcarriers in the frequency domain, where N i ⁇ mb UL and N iC RB are given by Table 5.2.3-1 ( Figure 1C herein).
  • a physical resource block in the UL thus consists of N sym h bL X N,, RB resource elements, corresponding to one slot in the time domain and 180 kHz in the frequency domain.
  • DCI Downlink control information
  • DCI format 0 is used for the transmission of UL-SCH assignments.
  • the following information is transmitted by means of the DCI format 0:
  • DCI format 1 is used for the transmission of DL-SCH assignments for SIMO ⁇ operation. The following information is transmitted by means of the DCI format 1 :
  • bits of this field are used as a header specific to this resource allocation type to indicate the selected resource blocks subset - 1 bit indicates a shift of the resource allocation span
  • bits provide the resource allocation where the value of P depends on the number of DL resource blocks as indicated in subclause [7.1.1] of [3]
  • DCI format IA is used for a compact transmission of DL-SCH assignments for SIMO operation.
  • the UE 10 may declare an occurrence of a persistent resource allocation if at least one (selected or predetermined) resource allocation element is the same between the two PDCCHs.
  • the UE 10 receives semi-persistent allocation on the PDCCH (e.g.. indicated by a special C-RNTI) and the timer 1OH is not running, then: a. If the UE 10 does not have a semi-persistent UL grant, then the UE 10 stores the relevant (or selected) parameters and starts the timer 1OH; b. If the UE has a semi-persistent UL grant, then i. If the parameters and timing of the PDCCH would not change the existing semi-persistent UL grant, then do nothing (confirms the semi-persistent allocation); else ii.
  • UE 10 If the parameters or the timing of the PDCCH are different from the existmti semi- n ⁇ rsist ⁇ nt UL "rant, then UE 10 considers that semi-persistent UL grant is released and UE 10 stores the relevant (or selected) parameters and starts the timer 1OH. iii. Alternatively, if the parameters are the same but the timing of the
  • UE 10 considers that the timing of the semi- persistent allocation is changed and stores the new timing (TTI number). iv.
  • TTI time since the PDCCH is changed.
  • some parameter e.g. PRB allocation or TBS
  • UE 10 considers that the semi-persistent allocation is updated with the new parameter.
  • the UE 10 If the UE 10 receives another semi-persistent allocation (with the same relevant (or selected) parameters) on the PDCCH while the timer is running, then the UE 10 considers the allocation as semi-persistent, stores the rest of the parameters (if not all were selected) and begins using the semi-persistent allocation without another PDCCH (and stops the timer 10H). 3. If the timer 1OH expires, the UE 10 discards the stored semi-persistent parameters.
  • the UE 10 If the UE 10 receives another semi-persistent allocation on the PDCCH while the timer 1OH is running, but the relevant (or selected) parameters are different, then the UE 10 replaces the stored parameters with the newly received parameters and restarts the timer 1OH.
  • Figure 5 shows an example of a semi-persistent allocation for the case of UL VoIP packet traffic in accordance with the exemplary embodiments of this invention.
  • PDCCH Physical Downlink Control Channel
  • the UE 10 is allowed to send the initial transmissions without receiving a new UL grant from the eNB 12.
  • Any needed retransmissions may be handled adaptively ( scheduled with PDCCH, as in first retransmission shown in Figure 5 ) or non- adaptively (only a NAK is sent from the eNB 12, as in the second retransmission in
  • the eNB 12 should detect this fact from an expected but missing UL (e.g.. VoIP) packet transmission. In this case the eNB 12 may send another semi-persistent PDCCH. If the second semi-persistent PDCCH is lost, the eNB 12 should again detect this condition. However, sending one more semi-persistent PDCCH would not be sufficient if the timer 1 OH is set to PS_PERIOD (typically 20 ms for VoIP). In this case then either a forth semi-persistent PDCCH is sent, or the timer 1OH can be increased to. for example, 2 times the PS_PERIOD.
  • PS_PERIOD typically 20 ms for VoIP
  • the exemplary embodiments have been described thus far in the context of the UL. it may also be applied for use in making DL semi-persistent allocations to improve reliability.
  • the UE 10 does not consider the allocation semi-persistent until it has received two (identical or substantially identical) semi-persistent PDCCHs. Afterwards (after receiving the two semi-persistent PDCCHs) the UE 10 attempts to receive the PDSCH (the data channel) blindly without receiving the PDCCH.
  • LIsing two PDCCHs for triggering the semi-persistent allocation implies that the probability for false positive detection decreases significantly.
  • the PDCCHs may be transmitted using a higher aggregation level, i.e., using more resource elements and thus stronger channel coding, or with higher power.
  • the exemplary embodiments of this invention may be implemented at least in part a revision to at least one LTE standard document.
  • a change may be made to subclause 5.4.1 "UL Grant reception" of 3GPP TS 36.321 V8.1.0 (2008-03) Technical Specification 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA) Medium Access Control (MAC) protocol specification (Release 8).
  • E-UTRA Evolved Universal Terrestrial Radio Access
  • MAC Medium Access Control protocol specification
  • the subclause may be modified to read as follows:
  • the UE When the UE has a C-RNTI. Semi-Persistent Scheduling C-RNTI, or Temporary C- RNTL the UE shall for each TTI: - If the Semi-Persistent Grant Timer expires: discard the stored PDCCH parameters;
  • HARQ information to the HARQ entity for this TTI.
  • the period of configured uplink grants is expressed in TTIs.
  • the UE may choose to continue with either the grant for its RA-RNTI or the grant for its C- RNTI.
  • the UE shall for each TTI:
  • the foregoing exemplary embodiments thus provide several procedures that can beneficially reduce or essentially eliminate the occurrence of false positive persistent UL grants during operation of the wireless communication system
  • two identical (or substantially identical) persistent UL grants need to be received by the LTE 10 within some predetermined period, such as, e.g.. PS_PERIOD or 2*PS_PERIOD, ( or more generally a multiple (/?) of PS PERIOD.
  • n is equal to one, or approximately one. or greater than one
  • the persistent allocation is triggered by receiving two PDCCHs indicating persistent UL grant with same Ll parameters, while in another case the two persistent UL grants need to be received within, for example.
  • the timer 1OH may be set to a value close to PS_PERIOD or 2*PS_PERIOD. for example.
  • Block 6A there is a step of receiving a first control information from a network access node, the first control information comprising a plurality of fields defining control information elements that are relevant to a resource allocation.
  • Block 6B there is a step of receiving a second control information from the network access node, the second control information comprising a plurality of fields defining control information elements that are relevant to the resource allocation.
  • Block 6C there is a step of declaring the resource allocation to be a persistent resource allocation if at least one of the plurality of fields of the second control information is the same as one of the plurality of fields of the first control information.
  • Block 7A there is a step of composing a first control information for a user equipment, the first control information comprising a plurality of fields defining control information elements that are relevant to a resource allocation.
  • Block 7B there is a step of transmitting the first control information to the user equipment.
  • Block 7C there is a step of composing a second control information for the user equipment, the second control information comprising a plurality of fields defining control information elements that are relevant to the resource allocation.
  • the resource allocation is made to be a persistent resource allocation by making at least one of the plurality of fields of the second control information to be the same as one of the plurality of fields of the first control information.
  • Block 7D there is a step of transmitting the second control information to the user equipment.
  • the various exemplary embodiments may be implemented in hardware or special purpose circuits, software, logic or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the invention is not limited thereto.
  • firmware or software which may be executed by a controller, microprocessor or other computing device, although the invention is not limited thereto.
  • While various aspects of the exemplary embodiments of this invention may be illustrated and described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that these blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the exemplary embodiments of the inventions may be practiced in various components such as integrated circuit chips and modules. It should thus be appreciated that the exemplary embodiments of this invention may be realized in an apparatus that is embodied as an integrated circuit, where the integrated circuit may comprise circuitry (as well as possibly firmware) for embodying at least one or more of a data processor, a digital signal processor, baseband circuitry and radio frequency circuitry that are configurable so as to operate in accordance with the exemplary embodiments of this invention.
  • the DPs 1 OA. 12A. which may be considered to function as UE and eNB controllers, respectively, may each be embodied at least partially in at least one integrated circuit.
  • one or more of the memory and/or transceiver-related circuitry may be integrated together with the respective controller.
  • the exemplary embodiments have been described in the context of a VoIP application, they may be used in other types of applications wherein it is desired to transmit a stream of packets (data units) using persistent or semi-persistent resource allocations (e.g.. video content).
  • the various packets may be logically related, e.g., they are associated with a single ongoing VoIP connection, or they may be logically distinct and unrelated to one another.
  • connection means any connection or coupling, either direct or indirect, between two or more elements, and may encompass the presence of one or more intermediate elements between two elements that are “connected” or “coupled” together.
  • the coupling or connection between the elements can be physical, logical, or a combination thereof.
  • two elements may be considered to be “connected” or “coupled” together by the use of one or more wires. cables and/or printed electrical connections, as well as by the use of electromagnetic energy, such as electromagnetic energy having wavelengths in the radio frequency region, the microwave region and the optical (both visible and invisible) region, as several non- limiting and non-exhaustive examples.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un procédé qui comprend la réception de premières informations de commande provenant d'un nœud d'accès réseau, les premières informations de commande comprenant une pluralité de champs définissant des éléments d'informations de commande qui sont relatifs à une allocation de ressource; la réception de secondes informations de commande provenant du nœud d'accès réseau, les secondes informations de commande comprenant une pluralité de champs définissant des éléments d'informations de commande qui sont relatifs à l'allocation de ressource; et la déclaration de l'allocation de ressource comme étant une allocation de ressource persistante si au moins un de la pluralité de champs des secondes informations de commande est le même que l'un de la pluralité de champs des premières informations de commande. L'invention porte également sur des programmes d'ordinateur et un appareil pour exécuter le procédé, ainsi que sur un nœud d'accès réseau configuré pour composer des premières informations de commande et des secondes informations de commande pour exprimer des allocations de ressource.
PCT/IB2008/051614 2008-04-25 2008-04-25 Signalisation de partie de configuration semi-persistante par canal de commande de liaison descendante WO2009130543A1 (fr)

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US10070481B2 (en) 2008-08-12 2018-09-04 Koninklijke Philips N.V. Method for communicating in a network, radio stations and a system therefor
US9565592B2 (en) 2008-08-12 2017-02-07 Koninklijke Philips N.V. Method for communicating in a network, radio stations and a system for allocating uplink resource
WO2010018508A1 (fr) * 2008-08-12 2010-02-18 Koninklijke Philips Electronics N.V. Procédé de communication par réseau, stations radio et système apparenté
US9119094B2 (en) 2008-08-12 2015-08-25 Koninklijke Philips N.V. Method for communicating in a network, radio stations and a system therefor
US8854989B2 (en) 2010-01-20 2014-10-07 Huawei Technologies Co., Ltd Receiver, transmitter, feedback device, transceiver and signal processing method
US9473338B2 (en) 2010-01-20 2016-10-18 Huawei Technologies Co., Ltd. Receiver, transmitter, feedback device, transceiver and signal processing method
EP2525512A1 (fr) * 2010-02-11 2012-11-21 Huawei Technologies Co., Ltd. Procédé et dispositif de mise en place d'un service de programmation semi-persistante ou analogue
US8615248B2 (en) 2010-02-11 2013-12-24 Huawei Technologies Co., Ltd. Method and device for realizing semi-persistent scheduling service or semi-persistent scheduling-like service
EP2525512A4 (fr) * 2010-02-11 2013-01-09 Huawei Tech Co Ltd Procédé et dispositif de mise en place d'un service de programmation semi-persistante ou analogue
CN102845012A (zh) * 2010-03-29 2012-12-26 三星电子株式会社 在载波聚合无线通信系统中用于上行链路确认信令的方法和系统
US9768934B2 (en) 2010-03-29 2017-09-19 Samsung Electronics Co., Ltd. Method and system for uplink acknowledgement signaling in carrier-aggregated wireless communication systems
US11963196B2 (en) 2011-03-23 2024-04-16 Sun Patent Trust Resource assignment for single and multiple cluster transmission
CN107769904A (zh) * 2011-03-23 2018-03-06 太阳专利信托公司 终端装置和接收方法
US11234231B2 (en) 2011-03-23 2022-01-25 Sun Patent Trust Resource assignment for single and multiple cluster transmission
US11696308B2 (en) 2011-03-23 2023-07-04 Sun Patent Trust Resource assignment for single and multiple cluster transmission
CN106712914B (zh) * 2015-11-13 2021-06-04 北京三星通信技术研究有限公司 一种双工通信方法、基站及终端
CN106712914A (zh) * 2015-11-13 2017-05-24 北京三星通信技术研究有限公司 一种双工通信方法、基站及终端
US20220141860A1 (en) * 2020-10-29 2022-05-05 Qualcomm Incorporated Semi-persistent resource release timing signaling

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