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US20160057717A1 - Network node and method for indicating to wireless device that system information (si) has changed for purposes of a system access procedure - Google Patents

Network node and method for indicating to wireless device that system information (si) has changed for purposes of a system access procedure Download PDF

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Publication number
US20160057717A1
US20160057717A1 US14/829,561 US201514829561A US2016057717A1 US 20160057717 A1 US20160057717 A1 US 20160057717A1 US 201514829561 A US201514829561 A US 201514829561A US 2016057717 A1 US2016057717 A1 US 2016057717A1
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US
United States
Prior art keywords
block
wireless device
changed
fcch
sch
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Abandoned
Application number
US14/829,561
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English (en)
Inventor
Olof Liberg
Mårten Sundberg
John Walter Diachina
Paul Schliwa-Bertling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to US14/829,561 priority Critical patent/US20160057717A1/en
Priority to MX2017001575A priority patent/MX2017001575A/es
Priority to BR112017003484A priority patent/BR112017003484A2/pt
Priority to EP15767309.6A priority patent/EP3183914A1/en
Priority to CN201580044701.8A priority patent/CN106576284A/zh
Priority to PCT/IB2015/056301 priority patent/WO2016027239A1/en
Priority to RU2017109124A priority patent/RU2017109124A/ru
Assigned to TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) reassignment TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHLIWA-BERTLING, PAUL, DIACHINA, JOHN WALTER, SUNDBERG, Mårten, LIBERG, OLOF
Publication of US20160057717A1 publication Critical patent/US20160057717A1/en
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0205—Traffic management, e.g. flow control or congestion control at the air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/06—Access restriction performed under specific conditions based on traffic conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0289—Congestion control
    • H04W72/0406—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the present disclosure relates to a network node (e.g., base station, eNodeB) which indicates that System Information (SI) has changed in at least one of a frequency correction channel (FCCH) block or a synchronization channel (SCH) block, and transmits the at least one of the FCCH block or the SCH block to at least one wireless device.
  • a network node e.g., base station, eNodeB
  • SI System Information
  • FCCH frequency correction channel
  • SCH synchronization channel
  • the present disclosure relates to a wireless device which receives the at least one of a FCCH block or the SCH block, and determines if the received at least one of the FCCH block or the SCH block indicates that SI has changed and uses this information for purposes of a system access procedure.
  • Extended Coverage The general principle of extended coverage is that of using blind repetitions for the control channels and for the data channels.
  • MCS-1 i.e., the lowest MCS supported in EGPRS today
  • HARQ retransmissions to realize the needed level of data transmission performance.
  • Support for extended coverage is realized by defining different coverage classes. A different number of blind repetitions are associated with each of the coverage classes wherein extended coverage is associated with coverage classes for which multiple blind repetitions are needed (i.e., a single blind repetition is considered as the reference coverage).
  • the number of total blind transmissions for a given coverage class can differ between different logical channels.
  • System Access Procedure The steps performed by a wireless device to verify if System Information needs to be reacquired, reacquire System Information if necessary, notify a network node that the network node needs to transmit information (e.g., application layer payload) and receive from the network node an assignment of radio resources to be used by the wireless device to transmit that information.
  • information e.g., application layer payload
  • System Information The set of parameters sent by a network node on a broadcast control channel (BCCH) used by a wireless device to determine radio related parameters to be applied when attempting system access to the network node on the random access channel (RACH) of the common control channel (CCCH) and to determine the availability of neighbor cells.
  • BCCH broadcast control channel
  • RACH random access channel
  • CCCH common control channel
  • SI System Information
  • a network node e.g., base station, eNodeB
  • the reading of the SI by a wireless device especially when in extended coverage, consumes energy and hence has a negative impact on a battery life of the wireless device. It is therefore of interest for the wireless device to read the SI as infrequently as possible.
  • changes to the SI could be vital and should be communicated to the wireless device before the wireless device performs a system access procedure, by providing for example information on how the wireless device should access the system.
  • a network node, a wireless device and various methods are described in the independent claims. Advantageous embodiments of the network node, the wireless device, and the various methods are further described in the dependent claims.
  • the present disclosure provides a network node in a wireless communication system.
  • the network node comprises a processing module configured to indicate that SI has changed in at least one of a FCCH block or a SCH block.
  • the network node comprises a transceiver module configured to transmit the at least one of the FCCH block or the SCH block to at least one wireless device.
  • the network node has an advantage in that the network node indicates to a wireless device that is in the process of initiating a system access procedure that the SI has recently changed and therefore needs to be reacquired before performing the system access procedure.
  • the present disclosure provides a method in a network node of a wireless communication system.
  • the method comprises an indicating step and a transmitting step.
  • the network node indicates that SI has changed in at least one of a FCCH block or a SCH block.
  • the transmitting step the network node transmits the at least one of the FCCH block or the SCH block to at least one wireless device.
  • the method has an advantage in that it enables the network node to indicate to a wireless device that is in the process of initiating a system access procedure that the SI has recently changed and therefore needs to be reacquired before performing the system access procedure.
  • the present disclosure provides a wireless device configured to interface with a wireless communication system.
  • the wireless device comprises a transceiver module configured to receive at least one of a FCCH block or a SCH block.
  • the wireless device comprises a processing module configured to determine if the received at least one of the FCCH block or the SCH block indicates that SI has changed.
  • the wireless device has an advantage in that while the wireless device is in the process of initiating a system access procedure, it can determine that the SI has recently changed and therefore needs to be reacquired before performing the system access procedure.
  • the present disclosure provides a method in a wireless device configured to interface with a wireless communication system.
  • the method comprises a receiving step and a determining step.
  • the wireless device receives at least one of a FCCH block or a SCH block.
  • the wireless device determines if the received at least one of the FCCH block or the SCH block indicates that SI has changed.
  • the method has an advantage in that while the wireless device is in the process of initiating a system access procedure, the wireless device can determine that the SI has recently changed and therefore needs to be reacquired before performing the system access procedure.
  • FIG. 1 is a diagram of an exemplary wireless communication network which includes a network node (e.g., base station, eNodeB) and a wireless device, each of which are configured in accordance with an embodiment of the present disclosure;
  • a network node e.g., base station, eNodeB
  • a wireless device each of which are configured in accordance with an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a method implemented in the network node (e.g., base station, eNodeB) in accordance with an embodiment of the present disclosure
  • FIG. 3 is a block diagram illustrating structures of an exemplary network node (e.g., base station, eNodeB) configured in accordance with an embodiment of the present disclosure
  • FIG. 4 is a flowchart of a method implemented in a wireless device in accordance with an embodiment of the present disclosure
  • FIG. 5 is a block diagram illustrating structures of an exemplary wireless device configured in accordance with an embodiment of the present disclosure
  • FIG. 6 is a flowchart of a method which is implemented by the wireless device in accordance with an embodiment of the present disclosure.
  • FIG. 7 is a flowchart of a method which is implemented by the wireless device in accordance with another embodiment of the present disclosure.
  • a wireless device As discussed in the Background section, it is of interest for a wireless device to read the SI as infrequently as possible. In addition, it is of interest to indicate as early as possible to a wireless device that is in the process of initiating a system access procedure that the SI has recently changed and therefore needs to be reacquired before performing the system access procedure.
  • the present disclosure as discussed below addresses these interests and in particular the interest related to indicating as early as possible to a wireless device that is in the process of initiating a system access procedure that the SI has recently changed and therefore needs to be reacquired before performing the system access procedure.
  • the network node 100 (e.g., base station 100 , eNodeB 100 ) and a wireless device 110 , each of which are configured in accordance with an embodiment of the present disclosure.
  • the network node 100 e.g., base station, eNodeB
  • the network node 100 includes (1) a processing module 102 configured to indicate that SI has changed in at least one of a FCCH block 104 or a SCH block 106 , and (2) a transceiver module 108 configured to transmit the at least one of the FCCH block 104 or the SCH block 106 to at least one wireless device 110 (only one shown) (as illustrated in FIGS. 2-3 ).
  • the wireless device 110 includes (1) a transceiver module 114 configured to receive the at least one of the FCCH block 104 or the SCH block 106 , and (2) a processing module 112 configured to (i) determine if the received at least one of the FCCH block 104 or the SCH block 106 indicates that SI has changed, (ii) when the SI has changed then read SI as part of a system access procedure, (iii) when the SI has not changed then determine if a last reading of SI is still valid, and when it is determined that the last reading of SI is still valid then continue a system access procedure without reading SI, and when it is determined that the last reading of SI is not still valid then read SI as part of a system access procedure (as illustrated in FIGS. 4-5 ).
  • the network node 100 indicates that the SI has changed in the at least one of the FCCH block 104 or the SCH block 106 .
  • the network node 100 at step 202 a indicates that the SI has changed in the FCCH block 104 by shifting a frequency offset relative to a carrier center frequency to a level (amount) detectable by the at least one wireless device 110 .
  • the network node 100 can shift the frequency offset relative to the carrier center frequency to the level (amount) detectable by the at least one wireless device 110 to indicate that the SI has changed by one of the following: (i) using a negative modulation index for GMSK modulation, (ii) using an alternative (i.e., alternating) fixed bit pattern (it is to be noted that the conventional network node feeds its modulator with a stream of bits having form “0000000 . . . ” to create a tone at +67 kHz offset, while in the present disclosure the network node 100 can feed its modulator with a stream of bits having form of “0101010101 . . .
  • the network node 100 at step 202 b uses a flag in the SCH block 106 to indicate that the SI has changed.
  • the network node 100 transmits the at least one of the FCCH block 104 or the SCH block 106 to the at least one wireless device 110 .
  • the network node 100 may comprise an indication module 302 and a transmit module 304 .
  • the indication module 302 is configured to indicate that the SI has changed in the at least one of the FCCH block 104 or the SCH block 106 .
  • the indication module 302 indicates that the SI has changed in the FCCH block 104 by shifting a frequency offset relative to a carrier center frequency to a level (amount) detectable by the at least one wireless device 110 .
  • the indication module 302 can shift the frequency offset relative to the carrier center frequency to the level (amount) detectable by the at least one wireless device 110 to indicate that the SI has changed by one of the following: (i) using a negative modulation index for GMSK modulation, (ii) using an alternative (i.e., alternating) fixed bit pattern (it is to be noted that the conventional network node feeds its modulator with a stream of bits having form “0000000 . . . ” to create a tone at +67 kHz offset, while in the present disclosure the network node 100 can feed its modulator with a stream of bits having form of “0101010101 . . .
  • the transmit module 304 is configured to transmit the at least one of the FCCH block 104 or the SCH block 106 to the at least one wireless device 110 .
  • the above-described modules 302 and 304 of the network node 100 may be implemented separately as suitable dedicated circuits. Further, the modules 302 and 304 can also be implemented using any number of dedicated circuits through functional combination or separation. In some embodiments, the modules 302 and 304 may be even combined in a single application specific integrated circuit (ASIC).
  • the network node 100 may comprise the processing module 102 which includes a memory, and a processor (including but not limited to a microprocessor, a microcontroller or a Digital Signal Processor (DSP), etc.), and the transceiver module 108 .
  • DSP Digital Signal Processor
  • the memory stores machine-readable program code executable by the processor to cause the network node 100 to perform the steps of the above-described method 200 .
  • the network node 100 also includes many other well-known components, but for clarity, only the components needed to describe the features of the present disclosure are described herein.
  • the wireless device 110 receives the at least one of the FCCH block 104 or the SCH block 106 .
  • the wireless device 110 determines if the received at least one of the FCCH block 104 or the SCH block 106 indicates that SI has changed. In one example, the wireless device 110 at step 404 a determines if the received FCCH block 104 indicates that the SI has changed by detecting a shift of a frequency offset relative to a carrier center frequency in the received FCCH block 104 .
  • the wireless device 110 at step 404 b determines if the received SCH block 106 indicates that the SI has changed by reading a flag in the SCH block 106 . If the result of step 404 is a determination of yes, the wireless device 110 at step 406 reads SI as part of a system access procedure. If the result of step 404 is a determination of no, the wireless device 110 at step 408 determines if a last reading of SI is still valid. If the result of step 408 is a determination of yes, the wireless device 110 at step 410 continues a system access procedure without reading SI. If the result of step 408 is a determination of no, the wireless device 110 at step 412 reads SI as part of a system access procedure.
  • this method 400 along with various alternative exemplary methods 600 and 700 associated with the present disclosure are discussed hereinafter.
  • the wireless device 110 may comprise a receive module 502 , a first determine module 504 , a first read module 506 , a second determine module 508 , a continue module 510 , and a second read module 512 .
  • the receive module 502 is configured to receive the at least one of the FCCH block 104 or the SCH block 106 .
  • the first determine module 504 is configured to determine if the received at least one of the FCCH block 104 or the SCH block 106 indicates that SI has changed.
  • the first determine module 504 is configured to determine if the received FCCH block 104 indicates that the SI has changed by detecting a shift of a frequency offset relative to a carrier center frequency in the received FCCH block 104 . In another example, the first determine module 504 is configured to determine if the received SCH block 106 indicates that the SI has changed by reading a flag in the SCH block 106 . The first read module 506 is configured to read SI as part of a system access procedure if the received at least one of the FCCH block 104 or the SCH block 106 indicates that SI has changed.
  • the second determine module 508 is configured to determine if a last reading of SI is still valid if the received at least one of the FCCH block 104 or the SCH block 106 indicates that the SI has not changed.
  • the continue module 510 is configured to continue a system access procedure without reading SI if the last reading of SI is determined to still be valid.
  • the second read module 512 is configured to read SI as part of a system access procedure if the last reading of SI is determined to not be still valid.
  • modules 502 , 504 , 506 , 508 , 510 and 512 of the wireless device 110 may be implemented separately as suitable dedicated circuits. Further, the modules 502 , 504 , 506 , 508 , 510 and 512 can also be implemented using any number of dedicated circuits through functional combination or separation. In some embodiments, the modules 502 , 504 , 506 , 508 , 510 and 512 may be even combined in a single application specific integrated circuit (ASIC).
  • ASIC application specific integrated circuit
  • the wireless device 110 may comprise the processing module 112 which includes a memory, and a processor (including but not limited to a microprocessor, a microcontroller or a Digital Signal Processor (DSP), etc.), and the transceiver module 114 .
  • the memory stores machine-readable program code executable by the processor to cause the wireless device 110 to perform the steps of the above-described method 400 .
  • the wireless device 110 also includes many other well-known components, but for clarity, only the components needed to describe the features of the present disclosure are described herein.
  • the wireless device 110 may refer generally to an end terminal (user) that attaches to the wireless communication network, and may refer to either an M2M device or MTC device (e.g., smart meter) or a non-M2M/MTC device.
  • M2M device e.g., smart meter
  • MTC device e.g., smart meter
  • non-M2M/MTC device e.g., MTC device
  • the term may be synonymous with the term mobile device, mobile station (MS), “User Equipment” or UE, as that term is used by the 3rd-Generation Partnership Project (3GPP), and includes standalone wireless devices, such as terminals, IoT devices, cell phones, tablets, smart phones, and wireless-equipped personal digital assistants, as well as wireless cards or modules that are designed for attachment to or insertion into another electronic device, such as a personal computer, electrical meter, etc.
  • 3GPP 3rd-Generation Partnership Project
  • a flag is included in the SCH block 106 indicating that the SI has recently changed, which implies to the wireless device 110 that the wireless device's system access procedure is to also include the reading of SI. If the flag in the SCH block 106 is not set, and the previous reading of SI is still valid (according to some minimum allowed periodicity of reacquiring SI), the reading of SI need not be part of the system access procedure of the wireless device 110 . It should be appreciated that the SCH block 106 is also used by wireless devices 110 to synchronize to the cell in both time and frequency. Plus, the SCH block 106 also includes information relating to the frame number and base station identity.
  • the indication where the SI has changed could also be provided in the FCCH block 104 rather than or in addition to the SCH block 106 .
  • the FCCH block 104 can be used to indicate that the SI has changed by using, for example, a negative modulation index for the GMSK modulation, an alternative (i.e., alternating) fixed bit pattern or other measures that shift the offset to a level (amount) detectable by the device, e.g., ⁇ 67.7 kHz.
  • the FCCH block 104 is also used by wireless devices 110 to synchronize in frequency to a cell, and hence if an alternative frequency is used by the FCCH, the wireless device 110 will use the alternative frequency to synchronize to a cell.
  • the current FCCH block 104 includes a single burst block consisting of 142 fixed bits modulated with GMSK which is equivalent to an unmodulated carrier, shifted in frequency by a 67.7 kHz frequency offset when compared to the GSM/EDGE channel center frequency.
  • a set of predetermined rules could be used by the network node 100 and wireless device 110 to allow for a clear interpretation of the intention of the flag indicating the modification of SI.
  • predetermined rules could include, but are not limited to:
  • the wireless device 110 determines that a signal strength is high enough to synchronize to a cell.
  • the wireless device 110 reads the FCCH block 104 to provide a rough frequency and time synchronization in the cell.
  • the wireless device 110 reads the SCH block 106 to provide a fine frequency and time synchronization in the cell.
  • the wireless device 110 reads the flag in the SCH block 106 indicating if the SI has changed.
  • the wireless device 110 determines if the SI has changed by determining if the flag is set. If the result of step 610 is a determination of yes, then the wireless device 110 at step 612 reads the SI as part of the system access procedure. If the result of step 610 is a determination of no, then the wireless device 110 at step 614 determines if a last reading of SI is still valid. If the result of step 614 is a determination of yes, the wireless device 110 at step 616 continues a system access procedure without reading SI. If the result of step 614 is a determination of no, the wireless device 110 at step 618 reads SI as part of a system access procedure.
  • FIG. 7 there is a flowchart of a method 700 implemented by the wireless device 110 in accordance with an embodiment of the present disclosure (it is to be noted that this method can be referred to as “Simple Boolean flag on FCCH indicating a modification of SI content”).
  • the wireless device 110 determines that a signal strength is high enough to synchronize to a cell.
  • the wireless device 110 reads the FCCH block 104 .
  • the wireless device 110 determines if the FCCH block 104 is rotated with ⁇ /2 (90 degrees) (equivalent as placed +67.7 kHz or ⁇ 67.7 kHz relative to carrier center frequency).
  • step 706 If the result of step 706 is a determination of yes, then the wireless device 110 knows that the SI has changed and at step 708 reads the SI as part of the system access procedure. If the result of step 706 is a determination of no, then the wireless device 110 knows that the SI has not changed and at step 710 determines if a last reading of SI is still valid. If the result of step 710 is a determination of yes, the wireless device 110 at step 712 continues a system access procedure without reading SI. If the result of step 710 is a determination of no, the wireless device 110 at step 714 reads SI as part of a system access procedure.
  • references in the specification to “one embodiment,” “an embodiment,” “an example embodiment,” etc. indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to implement such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
  • step is meant to be synonymous with “operation” or “action.” Any description herein of a sequence of steps does not imply that these operations must be carried out in a particular order, or even that these operations are carried out in any order at all, unless the context or the details of the described operation clearly indicates otherwise.
  • processing circuits may in some embodiments be embodied in one or more application-specific integrated circuits (ASICs).
  • ASICs application-specific integrated circuits
  • these processing circuits may comprise one or more microprocessors, microcontrollers, and/or digital signal processors programmed with appropriate software and/or firmware to carry out one or more of the operations described above, or variants thereof.
  • these processing circuits may comprise customized hardware to carry out one or more of the functions described above.
  • present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
US14/829,561 2014-08-21 2015-08-18 Network node and method for indicating to wireless device that system information (si) has changed for purposes of a system access procedure Abandoned US20160057717A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US14/829,561 US20160057717A1 (en) 2014-08-21 2015-08-18 Network node and method for indicating to wireless device that system information (si) has changed for purposes of a system access procedure
MX2017001575A MX2017001575A (es) 2014-08-21 2015-08-19 Nodo de red y metodo para indicar a un dispositivo inalambrico que la informacion del sistema ha cambiado para fines de un procesamiento de acceso al sistema.
BR112017003484A BR112017003484A2 (pt) 2014-08-21 2015-08-19 nó de rede, dispositivo sem fio, e, métodos em um nó de rede e em um dispositivo sem fio
EP15767309.6A EP3183914A1 (en) 2014-08-21 2015-08-19 Network node and method for indicating to wireless device that system information (si) has changed for purposes of a system access procedure
CN201580044701.8A CN106576284A (zh) 2014-08-21 2015-08-19 为了系统接入过程而向无线设备指示系统信息(si)已经改变的网络节点和方法
PCT/IB2015/056301 WO2016027239A1 (en) 2014-08-21 2015-08-19 Network node and method for indicating to wireless device that system information (si) has changed for purposes of a system access procedure
RU2017109124A RU2017109124A (ru) 2014-08-21 2015-08-19 Сетевой узел и способ индикации изменения системной информации (si) беспроводному устройству для процедуры доступа

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US14/829,561 US20160057717A1 (en) 2014-08-21 2015-08-18 Network node and method for indicating to wireless device that system information (si) has changed for purposes of a system access procedure

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US14/829,546 Active 2036-06-30 US10142876B2 (en) 2014-08-21 2015-08-18 System overload control when in extended coverage
US16/161,532 Abandoned US20190053090A1 (en) 2014-08-21 2018-10-16 System overload control when in extended coverage

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US16/161,532 Abandoned US20190053090A1 (en) 2014-08-21 2018-10-16 System overload control when in extended coverage

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EP (2) EP3183912B1 (es)
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ES (1) ES2667848T3 (es)
MX (1) MX2017001575A (es)
MY (1) MY179423A (es)
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US10176187B2 (en) * 2014-01-13 2019-01-08 Huawei Technologies Co., Ltd. Method and apparatus for generating a plurality of indexed data fields
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