WO2011032308A1 - 上行同步处理方法、用户设备和基站 - Google Patents

上行同步处理方法、用户设备和基站 Download PDF

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Publication number
WO2011032308A1
WO2011032308A1 PCT/CN2009/073943 CN2009073943W WO2011032308A1 WO 2011032308 A1 WO2011032308 A1 WO 2011032308A1 CN 2009073943 W CN2009073943 W CN 2009073943W WO 2011032308 A1 WO2011032308 A1 WO 2011032308A1
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WO
WIPO (PCT)
Prior art keywords
uplink synchronization
value
ccs
newly configured
base station
Prior art date
Application number
PCT/CN2009/073943
Other languages
English (en)
French (fr)
Inventor
常俊仁
李亚娟
宋巍巍
张亮亮
权威
覃忠宾
张戬
Original Assignee
华为技术有限公司
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
Priority to PCT/CN2009/073943 priority Critical patent/WO2011032308A1/zh
Priority to EP09849362.0A priority patent/EP2472965B1/en
Priority to PL09849362T priority patent/PL2472965T3/pl
Priority to ES18196225T priority patent/ES2797425T3/es
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP18196225.9A priority patent/EP3439383B1/en
Priority to HUE09849362A priority patent/HUE031543T2/en
Priority to EP13170077.5A priority patent/EP2635078B1/en
Priority to CN200980147162.5A priority patent/CN102239735B/zh
Priority to ES09849362.0T priority patent/ES2612867T3/es
Publication of WO2011032308A1 publication Critical patent/WO2011032308A1/zh
Priority to US13/421,665 priority patent/US8724617B2/en
Priority to US14/140,902 priority patent/US9131435B2/en
Priority to US14/252,365 priority patent/US9220077B2/en
Priority to US14/823,278 priority patent/US9743366B2/en
Priority to US15/663,391 priority patent/US10536912B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/0005Synchronisation arrangements synchronizing of arrival of multiple uplinks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/004Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/005Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by adjustment in the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/0055Synchronisation arrangements determining timing error of reception due to propagation delay
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/04Terminal devices adapted for relaying to or from another terminal or user
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices

Definitions

  • the present invention relates to the field of communications, and in particular, to an uplink synchronization processing method, a user equipment, and a base station. Background technique
  • LTE-A Long Term Evolved-Advanced
  • Carrier aggregation is the aggregation of multiple component carriers (CCs) into a carrier with a higher bandwidth than the LTE system to support high-speed data rates.
  • CCs component carriers
  • TA value Time Advanced, hereinafter referred to as TA value
  • the base station configures different CCs on different repeaters, or CCs of different frequencies pass different scatter paths, the TA values of different CCs are different.
  • the UE uses two different CCs to communicate with two non-cooperative access points, the TA values of the two CCs are different.
  • the embodiment of the present invention provides an uplink synchronization processing method, a user equipment, and a base station, to solve the problem of how the UE achieves uplink synchronization with the newly configured CC.
  • an embodiment of the present invention provides an uplink synchronization processing method, including: receiving an uplink synchronization indication message sent by a base station, where the uplink synchronization indication message carries a new configuration One or more identification information of the component carrier CC;
  • the embodiment of the invention provides an uplink synchronization processing method, including:
  • the UE applies the TA value carried in the TA adjustment message to the CC that needs to perform uplink synchronization.
  • an embodiment of the present invention provides a user equipment, including:
  • the first receiving module is configured to receive an uplink synchronization indication message sent by the base station, where the uplink synchronization indication message carries the newly configured one or more identification information of the component carrier CC;
  • a first sending module configured to send synchronization signaling to the base station when all or a part of CCs of the newly configured one or more CCs corresponding to the identifier information need to perform uplink synchronization; the first processing module And after the first receiving module receives the timing advance TA adjustment message sent by the base station according to the synchronization signaling, applying the TA value carried in the TA adjustment message to the CC that needs to perform uplink synchronization.
  • An embodiment of the present invention provides a base station, including:
  • a second sending module configured to send an uplink synchronization indication message to the user equipment UE, where the uplink synchronization indication message carries the newly configured one or more identification information of the component carrier CC;
  • a second receiving module configured to receive synchronization signaling sent by the UE
  • the second sending module is further configured to send a timing advance TA adjustment message to the UE according to the synchronization signaling, to indicate that the UE applies the TA value carried in the TA adjustment message to perform uplink synchronization.
  • CC a timing advance TA adjustment message
  • the UE may use the acquired TA value and the newly configured CC. Uplink synchronization is achieved, and the UE is only used to perform uplink synchronization by using the uplink synchronization indication message, thereby saving downlink radio resources.
  • the UE may obtain a new preamble by sending a dedicated preamble to the base station. The TA value to be used on the configured CC, which improves the uplink synchronization speed.
  • An embodiment of the present invention provides another uplink synchronization processing method, including:
  • the base station And receiving, by the base station, an uplink synchronization indication message, where the uplink synchronization indication message carries the newly configured identifier information of one or more component carriers CC;
  • the uplink synchronization is performed on the one or more CCs of the newly configured CC, where the CC packets are CC groups composed of one or more CCs sharing the same timing advance TA value.
  • An embodiment of the present invention provides another uplink synchronization processing method, including:
  • CC packet information Sending CC packet information to the UE by using a broadcast mode or dedicated signaling, where the CC packet information is used to indicate that a CC in the same CC packet shares a timing advance TA value;
  • uplink synchronization indication message Sending an uplink synchronization indication message to the user equipment UE, where the uplink synchronization indication message carries the identifier information of the newly configured one or more CCs, so that the UE learns one or more new configurations according to the identification information of the CC.
  • uplink synchronization is performed on one or more CCs of the newly configured CC.
  • an embodiment of the present invention provides a user equipment, including:
  • a third receiving module configured to receive an uplink synchronization indication message sent by the base station, where the uplink synchronization indication message carries the newly configured one or more identification information of the component carrier CC;
  • a third processing module configured to perform, on the one or more CCs of the newly configured, when the one or more CCs that are newly configured are not in the same CC group as the currently used CC according to the identifier information of the CC Uplink synchronization, wherein the CC packet is one or more sharing the same TA value CC group consisting of CC.
  • An embodiment of the present invention provides a base station, including:
  • a third sending module configured to send CC group information to the UE by using a broadcast mode or dedicated signaling, where the CC group information is used to indicate that a CC in the same CC packet shares a timing advance TA value;
  • a fourth sending module configured to send an uplink synchronization indication message to the UE, where the uplink synchronization indication message carries the identifier information of the newly configured one or more CCs, so that the UE learns new information according to the identification information of the CC.
  • uplink synchronization is performed on one or more CCs of the newly configured.
  • the UE may be configured to know whether the newly configured CC belongs to a certain CC group according to the CC group information and the newly configured identification information, and directly use the CC packet.
  • the TA corresponding to the CC packet implements uplink synchronization.
  • the uplink synchronization operation may be initiated to the base station, so that the TA value used on the newly configured CC is obtained from the base station. Therefore, when the base station needs to configure a new CC for the UE, or when some or some CCs that the UE is using need to be replaced by the newly configured CC, the UE can be synchronized with the newly configured CC.
  • the embodiment of the invention further provides an uplink synchronization processing method, including:
  • TA 2 ⁇ 1+2 ( T2 - T1 ) ( 2 ) ; Apply the acquired ⁇ 2 to the newly configured CC.
  • the UE may adjust the ⁇ condition of the newly configured CC according to the threshold value of the configured CC.
  • the UE may perform the downlink timing advance amount of the configured CC according to whether the CC is shared by multiple CCs.
  • the uplink timing advance amount and the downlink timing advance amount of the newly configured CC calculate the uplink timing advance amount of the newly configured CC.
  • the base station needs to be a UE.
  • the UE can be synchronized with the newly configured CC.
  • Embodiment 1 is a flowchart of Embodiment 1 of an uplink synchronization processing method according to the present invention
  • Embodiment 2 is a flowchart of Embodiment 2 of an uplink synchronization processing method according to the present invention
  • Embodiment 3 is a flowchart of Embodiment 3 of an uplink synchronization processing method according to the present invention.
  • FIG. 4 is a schematic structural diagram of a TA adjustment command in Embodiment 3 of the uplink synchronization processing method of the present invention.
  • FIG. 5 is a flowchart of Embodiment 4 of an uplink synchronization processing method according to the present invention.
  • Embodiment 8 is a flowchart of Embodiment 7 of an uplink synchronization processing method according to the present invention.
  • Embodiment 8 of an uplink synchronization processing method according to the present invention.
  • FIG. 10 is a flowchart of Embodiment 9 of an uplink synchronization processing method according to the present invention
  • Embodiment 10 of an uplink synchronization processing method according to the present invention.
  • FIG. 12 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention.
  • Embodiment 13 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • Embodiment 2 of a user equipment is a schematic structural diagram of Embodiment 2 of a user equipment according to the present invention.
  • FIG. 15 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • FIG. 1 is a flowchart of Embodiment 1 of an uplink synchronization processing method according to the present invention. As shown in FIG. 1, the method in this embodiment may include:
  • Step 101 Receive an uplink synchronization indication message sent by the base station.
  • the uplink synchronization indication message carries the identification information of the newly configured one or more CCs.
  • the uplink synchronization indication message can be a CC reconfiguration message or (Physics
  • PDCCH Downlink Control Channel
  • the uplink synchronization indication message carries the identifier information of the newly configured one or more CCs, where the identifier information is used by the base station, for example, the eNodeB indicates which one or which CCs the UE is newly configured, or, for the FDD system,
  • the CC identification information may also indicate one or more pairs of uplink and downlink CCs.
  • the so-called paired CC reconfiguration means that the eNodeB notifies the configuration of one uplink CC and one downlink CC.
  • the uplink CC and one downlink CC form a CC pair.
  • the identification information of the CC may be the identification information of the CC pair.
  • the meaning of the CC identification information is the same as the other, and thus other embodiments in the embodiment of the present invention. The part is no longer specified.
  • the CC reconfiguration message may also carry detailed configuration information of the newly configured CC.
  • the uplink synchronization indication message can be used as an independent radio resource control.
  • the (Radio Resource Control, hereinafter referred to as RRC) message or the Medium Access Control Protocol Data Unit (MAC PDU) is sent or nested in the RRC Connection Reconfiguration message.
  • RRC Radio Resource Control
  • MAC PDU Medium Access Control Protocol Data Unit
  • Step 102 Obtain a newly configured one or more CCs according to the uplink synchronization indication message.
  • the synchronization signaling is sent to the base station;
  • the UE After receiving the uplink synchronization indication message, such as a CC reconfiguration message or a PDCCH, the UE can learn which one or which CCs are newly configured, and whether it needs to be in a CC or multiple CCs with a new configuration. All or part of the CC performs uplink synchronization.
  • the uplink synchronization indication message such as a CC reconfiguration message or a PDCCH
  • the synchronization signaling is a synchronization sequence.
  • the synchronization signaling in this embodiment may be a dedicated preamble (reamble) or a sounding reference signal (hereinafter referred to as Sounding RS).
  • the CC reconfiguration message or the PDCCH may include a dedicated preamble allocated for the UE, and the dedicated preamble indicates whether the UE needs to perform uplink synchronization on the newly configured one or more CCs.
  • the way can be:
  • Explicit indication that is, using the dedicated bit indication information in the CC reconfiguration message or the PDCCH to indicate whether the UE needs to perform uplink synchronization on all or part of CCs of one CC or multiple CCs;
  • Implicit indication If the CC reconfiguration message or the PDCCH includes the allocation information of the dedicated preamble, it indicates that the UE needs to perform uplink synchronization on all or part of CCs of one CC or multiple CCs, and there is no allocation information of the dedicated preamble. Indicates that the UE may not perform uplink synchronization; that is, the UE may determine a CC reconfiguration message or a PDCCH, and if the dedicated preamble is included, perform uplink synchronization using the preamble.
  • the determining, according to the uplink synchronization indication message, that all or a part of CCs of the newly configured one or more CCs need to perform uplink synchronization may include:
  • the allocation information including the dedicated preamble in the uplink synchronization indication message it is learned that uplink synchronization needs to be performed on all or part of CCs of the newly configured one or more CCs.
  • the UE can The line synchronization indication message acquires a corresponding dedicated preamble.
  • the dedicated preamble can be sent to the base station to request the base station to indicate the TA value that can be used according to the dedicated preamble.
  • Step 103 Receive a TA adjustment message sent by the base station according to the synchronization signaling, and apply the TA value carried in the TA adjustment message to the CC that needs to perform uplink synchronization.
  • the base station may send a TA adjustment message to the UE, where the TA adjustment message may carry a TA value that needs to be applied to the newly configured CC that needs to perform uplink synchronization.
  • the UE may apply the formula (1) to calculate the required ⁇ used on the CC that needs to perform uplink synchronization, and apply the application to the CC.
  • TA TA f + (TA - M) x Ts ( 1 )
  • the UE can use the 73 ⁇ 4 on the CC that needs to perform uplink synchronization, so that when the base station needs to configure a new CC for the UE, or when some or some CCs that the UE is using need to be replaced by the newly configured CC, the UE This can be used to: achieve uplink synchronization with the newly configured CC, and, in this process, trigger the UE to perform uplink synchronization only by using the uplink synchronization indication message, thereby saving downlink radio resources, and when the UE needs to perform uplink synchronization, it can send the uplink to the base station. Synchronous signaling, such as a dedicated preamble, can obtain the TA value to be used on the newly configured CC from the base station, thereby improving the uplink synchronization speed.
  • Synchronous signaling such as a dedicated preamble
  • the uplink when it is learned according to the uplink synchronization indication message that uplink synchronization is not required to be performed on all or part of CCs of a newly configured one or more CCs, the uplink is performed.
  • the TA value indicated in the synchronization indication message is not required to be applied to the new configuration.
  • the CC that is currently being used is unique
  • the TA value is applied to all or part of the cc of the uplink synchronization that is not required to be performed in the newly configured one or more CCs.
  • the obtaining, according to the uplink synchronization indication message, that the uplink synchronization is not performed on all or a part of the CCs in the CC or the multiple CCs that are newly configured may include:
  • the indicated TA value includes: a TA value that needs to be adjusted on a newly configured CC, or is currently being used.
  • the identification information of the CC, the identifier information of the CC indicates that the TA value to be used on the newly configured CC is the same as the TA value of the CC corresponding to the identification information of the CC;
  • the indicated TA value includes: a TA value corresponding to each of the plurality of newly configured CCs, and a TA corresponding to each of the plurality of newly configured CCs respectively.
  • the number of the value, or the number of the currently used CC, the TA value required for the newly configured CC is the same as the TA value of the CC corresponding to the CC number.
  • the base station may indicate, to the UE, a TA value that can be used, which may be:
  • the UE When the UE is currently configured to use only one CC or the TA values of multiple CCs being used are the same, it indicates whether the UE can use the TA value currently being used;
  • the base station may directly notify the UE of the TA value that the UE needs to use, or may number the TA value currently used by the UE, and notify the UE of the number of the TA value to be used on the newly configured CC.
  • the UE may be notified of the number of the CC being used.
  • the UE receives the number information of the CC, it indicates that the newly configured CC can use the TA value on the CC corresponding to the number.
  • the unique TA value on the CC is applied to the CC in the newly configured one or more CCs that do not need to perform uplink synchronization.
  • the UE and the base station can know in advance that the TA values of all CCs currently used by the UE are the same, that is, all CCs use a unique TA value.
  • the base station does not specifically indicate the TA value for the UE, and when the UE receives the uplink synchronization.
  • the unique TA value of the currently used CC can be directly applied to the newly configured uplink without performing the uplink. Synchronized on the CC.
  • the TA value indicated in the uplink synchronization indication message may be directly applied to the CC in the newly configured CC that does not need to perform uplink synchronization, or directly
  • the unique TA value of the CC currently being used is applied to the newly configured CC that does not need to perform uplink synchronization, so that the UE can also achieve uplink synchronization with the newly configured CC when it is not necessary to perform uplink synchronization.
  • Embodiment 2 is a flowchart of Embodiment 2 of the uplink synchronization processing method of the present invention. As shown in FIG. 2, the method in this embodiment may include:
  • Step 201 Send an uplink synchronization indication message to the user equipment UE.
  • the uplink synchronization indication message carries the newly configured identifier information of one or more component carriers CC.
  • the uplink synchronization indication message may be a CC reconfiguration message or a PDCCH; the uplink synchronization indication message may be sent as a separate RRC message or a MAC PDU, or may be sent in an RRC connection reconfiguration message.
  • the uplink synchronization indication message may include a dedicated preamble or a Sounding RS allocated to the UE, and the dedicated preamble or the Sounding RS indicates whether the UE needs one or more new configurations.
  • the manner of performing uplink synchronization on the CCs may adopt the above explicit indication or implicit indication, and will not be described again.
  • the sending the uplink synchronization indication message to the UE may include: sending an extended TA value adjustment command to the UE; correspondingly, the method further includes: sending a CC reconfiguration message to the UE, so that Obtaining, by the UE, the identifier information according to the CC reconfiguration message Corresponding cc configuration information; or
  • the method may include: sending, to the UE, a CC reconfiguration message, where the CC reconfiguration message includes a TA value that the UE needs to adjust on a newly configured CC, or the CC reconfiguration message includes multiple CCs that are newly configured by the UE.
  • Step 202 After the UE learns, according to the uplink synchronization indication message, that all or a part of CCs of the newly configured one or more CCs need to perform uplink synchronization, receive the synchronization signaling sent by the UE.
  • the UE may obtain the corresponding dedicated preamble or the Sounding RS from the uplink synchronization indication message, and when performing the uplink synchronization, the UE may send the dedicated preamble or the Sounding RS to the base station.
  • the base station can indicate the TA value that the UE can use according to the dedicated preamble or the Sounding RS.
  • the base station can configure a new CC for the UE according to the bandwidth requirement, and can also configure multiple CCs or multiple CC groups for the UE (one uplink CC and one downlink CC can be called a CC group).
  • the base station may allocate only one dedicated preamble to the UE, that is, the dedicated preamble is shared by multiple CCs; of course, multiple preambles may also be allocated to the UE. Therefore, the receiving the dedicated preamble sent by the UE in step 202 may include: receiving a dedicated preamble sent by the UE, where the one dedicated preamble needs to perform uplink synchronization in the newly configured multiple CCs.
  • All or part of the CCs are sent; or the multiple dedicated preambles sent by the UE are received, and the multiple dedicated preambles are sent on all or part of the CCs in the newly configured multiple CCs that need to perform uplink synchronization.
  • Step 203 Send a timing advance TA adjustment message to the UE according to the synchronization signaling, so that the UE applies the TA value carried in the TA adjustment message to perform uplink synchronization.
  • the synchronous signaling is a dedicated preamble.
  • the base station may send a TA adjustment message to the UE, where the TA adjustment message may be carried.
  • the sending the TA adjustment message to the UE may include: sending an extended TA value adjustment command to the UE, where the extended TA value adjustment command includes a TA value that the UE needs to adjust on a newly configured CC, or The extended TA value adjustment command includes one or more TA values that the UE needs to adjust on the newly configured multiple CCs, and identification information of the CC corresponding to each TA value.
  • the UE may apply the formula (1) to calculate the TA required to be used on the CC that needs to perform uplink synchronization, and apply the TA to the CC.
  • the UE can use the CC on the CC that needs to perform uplink synchronization. Therefore, when the base station needs to configure a new CC for the UE, or the UE is using one or some CCs to be replaced by the newly configured CC, the UE may The uplink synchronization is achieved by using the newly configured CC, and the UE is used to perform uplink synchronization only by using the uplink synchronization indication message, thereby saving downlink radio resources.
  • the synchronization information may be sent to the base station. For example, a dedicated preamble can obtain the TA value to be used on the newly configured CC from the base station, thereby improving the uplink synchronization speed.
  • the following manner when the base station does not need the UE to perform uplink synchronization, the following manner may be adopted:
  • the indicated TA value may include: The TA value to be adjusted on a newly configured CC, or the identification information of the CC currently being used, and the identification information of the CC indicates the TA value to be used on the newly configured CC and the CC corresponding to the identification information of the CC.
  • the indicated TA value may include: a TA value corresponding to each of the plurality of newly configured CCs, and corresponding to the plurality of newly configured CCs respectively.
  • the number of the TA value, or the number of the currently used CC, the TA value required for the newly configured CC is the same as the TA value of the CC corresponding to the CC number.
  • the base station may indicate to the UE that the uplink can be made.
  • the TA value used can be:
  • the UE When the UE is currently configured to use only one CC or the TA values of multiple CCs being used are the same, it indicates whether the UE can use the TA value currently being used;
  • the base station may directly notify the UE of the TA value that the UE needs to use, or may number the TA value currently used by the UE, and notify the UE of the number of the TA value to be used on the newly configured CC.
  • the UE may be notified of the number of the CC being used.
  • the UE receives the number information of the CC, it indicates that the newly configured CC can use the TA value on the CC corresponding to the number.
  • the uplink synchronization indication message is learned according to the uplink synchronization indication message, it is not necessary to perform uplink synchronization on all or part of CCs of the newly configured one or more CCs, and the unique TA value on the CC currently being used.
  • the UE and the base station can know in advance that all the CCs currently used by the UE have the same TA value, that is, all CCs use a unique TA value.
  • the base station does not specifically indicate the TA value for the UE, and when the UE receives the uplink synchronization.
  • the TA value indicated in the uplink synchronization indication message may be directly applied to the CC in the newly configured CC that does not need to perform uplink synchronization, or directly
  • the unique TA value of the CC currently being used is applied to the newly configured CC that does not need to perform uplink synchronization, so that the UE can also achieve uplink synchronization with the newly configured CC when it is not necessary to perform uplink synchronization.
  • the synchronous signaling is used as a dedicated preamble as an example.
  • FIG. 3 is a flowchart of Embodiment 3 of the uplink synchronization processing method of the present invention.
  • the method in this embodiment may include: Step 301a: The base station sends a CC reconfiguration message to the UE.
  • the CC reconfiguration message carries the identification information of the newly configured one or more CCs, and the identifier information is used by the base station to indicate which one or which CCs the UE newly configures.
  • the CC reconfiguration message may also carry detailed configuration information of the newly configured CC.
  • the UE After receiving the CC reconfiguration message, the UE can learn which one or which of the new configuration is configured.
  • the CC can also know whether all or part of the newly configured CC or multiple CCs need to perform uplink synchronization.
  • Step 302a the UE determines, according to the CC reconfiguration message, whether uplink synchronization needs to be performed, if yes, step 303a is performed, otherwise step 304a is performed;
  • the CC reconfiguration message includes a dedicated preamble allocated for the UE.
  • the TA value that can be used is indicated to the UE in the case where the UE is not required to perform the uplink synchronization.
  • the specific manner has been described in the foregoing embodiment, and details are not described herein again.
  • the UE After receiving the CC reconfiguration message, if the CC reconfiguration message indicates a dedicated preamble, the UE needs to perform uplink synchronization on a part of the CC or multiple CCs of the newly configured CC, if the CC reconfiguration The message indicates the related information of the TA, and the UE does not need to perform uplink synchronization, and can directly implement uplink synchronization with the newly configured CC according to the related information of the TA.
  • Step 303a the UE sends the dedicated preamble to the base station, and performs step 305a;
  • the base station may newly configure one CC for the UE according to the bandwidth requirement, or may newly configure multiple CCs or multiple CC pairs for the UE (one uplink CC and one downlink CC may be referred to as one CC pair). .
  • the base station may allocate only one dedicated preamble to the UE, that is, the dedicated preamble is shared by multiple CCs; of course, multiple preambles may also be allocated to the UE.
  • the UE may send the dedicated preamble indicated in the CC reconfiguration message to the base station, so that the base station is enabled.
  • the TA value can be fed back to the UE according to the dedicated preamble.
  • Step 304a The UE applies the TA value indicated in the CC reconfiguration message to the newly configured CC that does not need to perform uplink synchronization.
  • Step 305a The base station sends an extended TA adjustment command to the UE.
  • the extended TA adjustment command may include the identification information of the CC corresponding to the TA value. If there is only one or a pair of newly configured CCs, or when only one or a pair of newly configured CCs need to perform uplink synchronization, the identification information of the CC may not be included, and the TA adjustment is defaulted.
  • the command is the TA adjustment corresponding to the newly configured CC. Then, the UE applies the TA value to the CC in the newly configured CC that needs to perform uplink synchronization.
  • the extended TA adjustment command may be a MAC PDU.
  • FIG. 4 is a schematic structural diagram of a TA adjustment command in Embodiment 3 of the uplink synchronization processing method of the present invention.
  • CC identification information that is, CC
  • the number of bits in the index is 2-3 bits, and the number of bits occupied by the extended TA command can be 5-6 bits, or it can occupy more bits.
  • the MAC PDU in this embodiment may use the logical channel reserved by the current LTE system to send the MAC PDU of the extended TA adjustment command, for example, an index number may be used.
  • an index number may be used for the logical channel of 11011, it is of course also possible to use logical channels reserved by other LTE systems.
  • Step 306a The UE applies the TA value carried in the extended TA adjustment command to the CC that needs to perform uplink synchronization.
  • the base station when the base station newly configures multiple CCs that need to perform uplink synchronization for the UE in the CC reconfiguration message, the base station may explicitly notify the UE in which CC the CC reconfiguration message should be received.
  • the above TA adjustment command That is, when the base station sends a CC reconfiguration message to the UE, it indicates the identity information of the CC used by the UE to receive the TA adjustment command.
  • the base station may also notify the UE to receive the TA adjustment life by using dedicated RRC signaling or MAC PDU or physical layer signaling.
  • the identification information of the CC In other embodiments of the present invention, the method of receiving the TA adjustment command may use the above method, and thus the description is not repeated in other parts of the present invention.
  • the UE can use the 73 ⁇ 4 on the CC that needs to perform uplink synchronization, so that when the base station needs to configure a new CC for the UE, or when some or some CCs that the UE is using need to be replaced by the newly configured CC, the UE This can be used to: achieve uplink synchronization with the newly configured CC, and, in this process, trigger the UE to perform uplink synchronization only by using the uplink synchronization indication message, thereby saving downlink radio resources, and when the UE needs to perform uplink synchronization, it can send the uplink to the base station.
  • a dedicated preamble can obtain the TA value to be used on the newly configured CC from the base station, thereby improving the uplink synchronization speed.
  • the method described in step 305a may also be used. , that is, the extended TA adjustment command MAC PDU shown in FIG. That is, when the base station needs to accurately adjust the TA value of the multiple component carriers that the UE is using, the extended TA adjustment command MAC PDU may be sent to the UE, where the TA adjustment command MAC PDU includes identification information of the component carrier that needs to be adjusted by the UE, and corresponding The need to adjust the TA value.
  • the TA value required to be adjusted differs from the TA value required to be adjusted in step 305a only in that the TA value adjustment granularity in this case is smaller, that is, more precise adjustment.
  • the UE After receiving the TA adjustment command MAC PDU, the UE adjusts the TA value that should be adjusted on each component carrier in the corresponding adjustment.
  • the above-described precise adjustment process may be performed, and thus the description will not be repeated in other embodiments.
  • the CC reconfiguration message in this embodiment may include information about a Physical Uplink Shared Channel (PUSCH) resource required for sending the dedicated preamble to the base station, and start using Frame information of the PUSCH resource.
  • PUSCH Physical Uplink Shared Channel
  • the UE schedules and sends the dedicated resource of the dedicated preamble on the PUSCH channel of the CC to be reconfigured.
  • the trigger may be triggered.
  • the UE allocates a dedicated PUSCH resource to the UE in the CC reconfiguration message of the uplink synchronization, so that the UE schedules the PUSCH resource on the newly allocated CC. Send a dedicated preamble.
  • the base station schedules the UE to send the dedicated PUSCH resource of the dedicated Preamble when transmitting the CC reconfiguration message to the UE, thereby effectively reducing the negative impact of the CC reconfiguration process on the normal random access procedure.
  • FIG. 5 is a flowchart of Embodiment 4 of the uplink synchronization processing method of the present invention. As shown in FIG. 5, the method in this embodiment may include:
  • Step 301b The base station sends a PDCCH to the UE.
  • the PDCCH may carry the identification information of the newly configured one or more CCs, and the identifier information is used by the base station to indicate which one or which CCs the UE newly configures.
  • Step 302b the UE determines, according to the PDCCH, whether uplink synchronization needs to be performed, if yes, step 303b is performed, otherwise step 304b is performed;
  • the PDCCH includes a dedicated preamble for the UE.
  • the TA value that can be used is indicated for the UE, and the specific manner is not described again.
  • the PDCCH After the PDCCH is received by the UE, if the PDCCH indicates a dedicated preamble, it indicates that the UE needs to perform uplink synchronization on a part of the CC or a plurality of CCs of the newly configured CC. If the PDCCH indicates the related information of the TA, The UE does not need to perform uplink synchronization, and can directly implement uplink synchronization with the newly configured CC according to the related information of the TA.
  • Step 303b the UE sends the dedicated preamble to the base station, and performs step 305b;
  • the base station may configure a new CC for the UE according to the bandwidth requirement, or may newly configure multiple CCs or multiple CC pairs for the UE. For a new configuration of multiple CCs or multiple CC pairs, the base station may allocate only one dedicated preamble to the UE, that is, the dedicated preamble is shared by multiple CCs; of course, multiple preambles may also be allocated to the UE.
  • the UE may send the dedicated preamble indicated in the PDCCH to the base station after learning that the uplink synchronization needs to be performed, so that the base station can The dedicated preamble feeds back the TA value to the UE.
  • Step 304b The UE applies the TA value indicated in the PDCCH to the newly configured CC that does not need to perform uplink synchronization.
  • Step 305b The base station sends an extended TA adjustment command to the UE.
  • the extended TA adjustment command may include the identification information of the CC corresponding to the TA value. If there is only one or a pair of newly configured CCs, or when only one or a pair of newly configured CCs need to perform uplink synchronization, the identification information of the CC may not be included, and the TA adjustment is defaulted. The command corresponds to the TA adjustment of the CC being newly configured. Then, the UE applies the TA value to the CC in the newly configured CC that needs to perform uplink synchronization.
  • the extended TA adjustment command may be a MAC PDU, and its structure may adopt a map.
  • Step 306b The UE applies the TA value carried in the extended TA adjustment command to the CC that needs to perform uplink synchronization.
  • the UE can use the TA on the CC that needs to perform uplink synchronization, so that when the base station needs to configure a new CC for the UE, or when some or some CCs that the UE is using need to be replaced by the newly configured CC, the UE This can be used to: achieve uplink synchronization with the newly configured CC, and, in this process, trigger the UE to perform uplink synchronization only by using the uplink synchronization indication message, thereby saving downlink radio resources, and when the UE needs to perform uplink synchronization, it can send the uplink to the base station.
  • a dedicated preamble can obtain the TA value to be used on the newly configured CC from the base station, thereby improving the uplink synchronization speed.
  • Step 307b The UE receives a CC reconfiguration message sent by the base station.
  • the PDCCH is triggered to perform uplink synchronization, and the PDCCH does not include some detailed configuration information of the newly configured CC. Therefore, in this embodiment, the base station may further send a CC reconfiguration message to the UE, so that the UE is configured according to the UE.
  • the CC reconfiguration message acquires configuration information of a CC corresponding to the identifier information.
  • this embodiment may also allocate a dedicated PUSCH resource to the UE, so that the UE is in the UE.
  • the PUSCH resource is sent to the newly allocated CC to send a dedicated preamble, thereby effectively reducing the negative impact of the CC reconfiguration process on the normal random access procedure.
  • FIG. 6 is a flowchart of Embodiment 5 of the uplink synchronization processing method of the present invention. As shown in FIG. 6, the method in this embodiment may include:
  • Step 301c The base station sends a PDCCH to the UE.
  • the PDCCH may carry the identification information of the newly configured one or more CCs, and the identifier information is used by the base station to indicate which one or which CCs the UE newly configures.
  • Step 302c the UE determines, according to the PDCCH, whether uplink synchronization needs to be performed, if yes, step 303c is performed, otherwise step 304c is performed;
  • the PDCCH includes a dedicated preamble allocated to the UE, and the dedicated preamble may adopt the above implicit indication or explicit indication.
  • the TA value that can be used is indicated for the UE, and the specific manner is not described again.
  • the UE After receiving the PDCCH, if the PDCCH indicates a dedicated preamble, the UE indicates
  • the UE needs to perform uplink synchronization on a part of the newly configured one or all CCs of the multiple CCs. If the PDCCH indicates the related information of the TA, the UE does not need to perform uplink synchronization, and may directly and according to the related information of the TA and the new information.
  • the configured CC implements uplink synchronization.
  • Step 303c the UE sends the dedicated preamble to the base station, and performs step 305c;
  • the base station may configure a new CC for the UE according to the bandwidth requirement, or may newly configure multiple CCs or multiple CC pairs for the UE. For a new configuration of multiple CCs or multiple CC pairs, the base station may allocate only one dedicated preamble to the UE, that is, the dedicated preamble is shared by multiple CCs; of course, multiple preambles may also be allocated to the UE.
  • Step 304c The UE applies the TA value indicated in the PDCCH to the newly configured CC that does not need to perform uplink synchronization.
  • Step 305c The base station sends a CC reconfiguration message to the UE.
  • the CC reconfiguration message includes a TA value that the UE needs to adjust on a newly configured CC, or the CC reconfiguration message includes one or more TA values that the UE needs to adjust on the newly configured multiple CCs, and corresponding to each TA value.
  • CC identification information includes a TA value that the UE needs to adjust on a newly configured CC, or the CC reconfiguration message includes one or more TA values that the UE needs to adjust on the newly configured multiple CCs, and corresponding to each TA value.
  • the UE can obtain a TA value by using the CC reconfiguration message.
  • the CC reconfiguration message may be a newly configured multiple.
  • the CC indicates a TA value, and may also indicate a TA value for each of the multiple CCs.
  • the TA value is separately indicated, the TA value respectively indicated needs to be associated with the identification information of the corresponding CC.
  • Step 306c The UE applies the TA value carried in the CC reconfiguration message to the CC that needs to perform uplink synchronization.
  • the UE can use the 73 ⁇ 4 on the CC that needs to perform uplink synchronization, so that when the base station needs to configure a new CC for the UE, or when some or some CCs that the UE is using need to be replaced by the newly configured CC, the UE This can be used to: achieve uplink synchronization with the newly configured CC, and, in this process, trigger the UE to perform uplink synchronization only by using the uplink synchronization indication message, thereby saving downlink radio resources, and when the UE needs to perform uplink synchronization, it can send the uplink to the base station.
  • a dedicated preamble can obtain the TA value to be used on the newly configured CC from the base station, thereby improving the uplink synchronization speed.
  • the embodiment may also allocate a dedicated PUSCH resource to the UE, so that the UE schedules the PUSCH resource to send a dedicated preamble on the newly allocated CC, thereby effectively reducing the CC reconfiguration process and causing a negative impact on the normal random access procedure. influences.
  • FIG. 7 is a flowchart of Embodiment 6 of the uplink synchronization processing method of the present invention. As shown in FIG. , the method in this embodiment may include:
  • Step 401 Receive an uplink synchronization indication message sent by the base station.
  • the uplink synchronization indication message may be a component carrier CC reconfiguration message or a PDCCH;
  • the uplink synchronization indication message carries the identifier information of the newly configured one or more CCs, and the identifier information is used by the base station, for example, the eNodeB indicates which one or which CCs the UE is newly configured.
  • the CC reconfiguration message may also carry detailed configuration information of the newly configured CC.
  • the uplink synchronization indication message may be sent as a separate RRC message or a MAC PDU, or may be sent in an RRC connection reconfiguration message.
  • Step 402 Perform, according to the identification information of the CC, that the newly configured one or more CCs do not belong to the same CC group as the currently used CC, and perform uplink synchronization on the newly configured one or more CCs.
  • the CC group refers to a CC group composed of one or more CCs sharing the same TA value.
  • the embodiment may further include: the receiving base station sends the broadcast mode or the dedicated signaling. CC packet information, CCs in the same CC packet share a timing advance TA value.
  • the process of performing uplink synchronization specifically may employ a contention-based random access procedure.
  • the contention-based random access procedure may be: the UE sends a random access Preamble message "Random Access Preamble" to the base station, and the selected Preamble (64 in total) implies the first scheduled uplink message that the subsequent UE needs to send. Size; Then, the base station sends a random access response message "Random Access Response" on the downlink synchronization channel, and the message is generated by the physical layer.
  • the Timing Advance Command field in the message includes a TA value that the UE needs to adjust when transmitting in the uplink, and the UL Grant field indicates information about the bandwidth resource allocated by the UE to send the first scheduled uplink message.
  • the Temporary C-RNTI field indicates a temporary identification information assigned to the UE.
  • the RAPID in the MAC header indicates the identification information of the preamble sent by the UE, that is, the random access Pramble ID.
  • the base station is a newly configured CC in the UE, when multiple CCs require the UE to perform uplink synchronization, further mapping is required.
  • Some random access response messages are modified as follows: When a preamble that is randomly selected by the UE is simultaneously sent on multiple CCs that need to perform uplink synchronization, the random access response message sent by the base station to the UE, in addition to the information to be carried, needs to carry multiple TA values respectively.
  • the identification information of the corresponding CC is such that the UE can clearly know the correspondence between the TA value and the CC that need to be adjusted after receiving the random access response message.
  • the existing random access response message does not need to be modified.
  • the UE sends the selected preamble identification information to the base station on the CC currently being used, when the base station is in the CC that needs to perform uplink synchronization.
  • the base station may send the TA value to the UE by using the foregoing random access response message or the extended TA command message in other embodiments of the present invention, based on the TA value obtained by the detection of the preamble.
  • the base station since the base station has identified the UE based on the preamble, the base station may not allocate the bandwidth resource for transmitting the uplink message to the UE in the random access response message, and may also omit the transmission of the contention resolution message to the UE.
  • the UE sends the first scheduled uplink message on the uplink synchronization channel according to the indication of the random access response message "Random Access Response".
  • the base station solves the conflict problem caused by using the same preamble for multiple UEs to the UE. Send a conflict resolution message.
  • the process of performing the uplink synchronization on the newly configured one or more CCs in this embodiment may adopt the uplink synchronization method described in any of the foregoing Embodiments 1 to 5, and details are not described herein.
  • the TA of the currently used CC is used on the one or more CCs. value.
  • the UE can learn whether the newly configured CC belongs to a certain CC group according to the CC group information and the newly configured identification information, and directly uses the CC packet when belonging to a certain CC group.
  • TA implements uplink synchronization, does not belong to a CC group
  • the uplink synchronization operation may be initiated to the base station to obtain the TA value used on the newly configured CC from the base station. Therefore, in this embodiment, when the base station needs to configure a new CC for the UE, or when some or some CCs that the UE is using need to be replaced by the newly configured CC, the UE can be synchronized with the newly configured CC.
  • FIG. 8 is a flowchart of Embodiment 7 of the uplink synchronization processing method of the present invention. As shown in FIG. 8, the method in this embodiment may include:
  • Step 501 Send, by using a broadcast mode or dedicated signaling, a component carrier CC group information to a user equipment UE.
  • the CC packet information is used to indicate that CCs in the same group share a TA value.
  • the CC can share another TA.
  • Step 502 Send an uplink synchronization indication message to the UE.
  • the uplink synchronization indication message may be a CC reconfiguration message or a physical downlink control channel.
  • the uplink synchronization indication message carries the identifier information of the newly configured one or more CCs, so that the UE learns that the newly configured one or more CCs are not the same as the currently used CC according to the identifier information of the CC.
  • uplink synchronization is performed on the one or more CCs of the new configuration.
  • the uplink synchronization indication message carries the identification information of the newly configured one or more CCs, and the identifier information is used by the base station, for example, the eNodeB indicates which one or which CCs the UE newly configures.
  • the CC reconfiguration message may also carry detailed configuration information of the newly configured CC.
  • the uplink synchronization indication message may be sent as a separate RRC message or a MAC PDU, or embedded in an RRC connection reconfiguration message.
  • uplink synchronization is performed on one or more CCs of the newly configured.
  • the process of performing uplink synchronization specifically may employ a contention-based random access procedure.
  • the process of performing the uplink synchronization on the newly configured one or more CCs in this embodiment may adopt the uplink synchronization method described in any of the foregoing Embodiments 1 to 5, and details are not described herein.
  • the target base station allocates multiple CCs for the UE in the handover command for use after handover.
  • the base station can notify the UE of the CC packet information in the handover command.
  • the UE After receiving the handover command, the UE selects one CC from each CC group to perform uplink synchronization based on the group information of the plurality of CCs acquired in the handover command.
  • the base station may also specify, in the handover command, a CC for performing uplink synchronization in each CC group for the UE.
  • the UE can learn whether the newly configured CC belongs to a certain CC group according to the CC group information and the newly configured identification information, and directly uses the CC packet when belonging to a certain CC group.
  • the TA implements uplink synchronization. When it does not belong to a certain CC packet, it may initiate an uplink synchronization operation to the base station, thereby acquiring the TA value used on the newly configured CC from the base station. Therefore, in this embodiment, when the base station needs to configure a new CC for the UE, or when some or some CCs that the UE is using need to be replaced by the newly configured CC, the UE can be synchronized with the newly configured CC.
  • FIG. 9 is a flowchart of Embodiment 8 of the uplink synchronization processing method of the present invention. As shown in FIG. 9, the method in this embodiment may include:
  • Step 601 Receive an uplink synchronization indication message sent by the base station.
  • the uplink synchronization indication message carries the newly configured one or more identification information of the component carrier CC and the indication information for transmitting the sounding reference signal on the newly configured one or more CCs.
  • the sounding reference signal may be a Sounding RS.
  • the UE needs to send a Sounding RS to the base station in the process of communicating with the base station, so as to ensure that the base station can detect the signal quality of the UE on the entire uplink bandwidth in real time.
  • the UE may be instructed to first send a Sounding RS on the newly configured CC, and then the base station may determine the TA value based on the detection of the Sounding RS.
  • Step 602 Send a sounding reference signal to the base station on the newly configured one or more CCs according to the indication information.
  • Step 603 The receiving base station adjusts the message according to the timing advance TA sent by the base reference signal, and applies the TA value carried in the TA adjustment message to the CC corresponding to the identifier information.
  • the uplink synchronization indication message includes:
  • the TA adjustment message includes: an extended TA value adjustment command, where the extended TA value adjustment command is included in a newly configured CC
  • the TA value to be adjusted, or the extended TA value adjustment command includes one or more TA values that need to be adjusted on the newly configured multiple CCs and identification information of the CC corresponding to each TA value.
  • the extended TA adjustment command may adopt the extended TA adjustment command described in the above embodiments 1 to 5, and details are not described herein again.
  • the TA adjustment message is a CC reconfiguration message, where the CC reconfiguration message includes a TA value that needs to be adjusted on a newly configured CC, or the CC is heavy.
  • the configuration message includes one or more TA values that need to be adjusted on the newly configured multiple CCs, and identification information of the CCs corresponding to the respective TA values.
  • the base station sends an uplink synchronization indication message carrying the indication information of the sounding RS to the UE, so that after receiving the uplink synchronization indication message, the UE may send a Sounding RS to the base station, so that the base station according to the Sounding
  • the RS calculates the TA value used on the newly configured CC of the UE, and sends the TA value to the UE. Therefore, in this embodiment, when the base station needs to configure a new CC for the UE, or when some or some CCs that the UE is using need to be replaced by the newly configured CC, the UE can be synchronized with the newly configured CC.
  • Embodiment 9 of an uplink synchronization processing method according to the present invention, as shown in FIG.
  • the method of an embodiment may include:
  • Step 701 Send an uplink synchronization indication message to the user equipment UE.
  • the uplink synchronization indication message carries the newly configured one or more identification information of the component carrier CC and the indication information for transmitting the sounding reference signal on the newly configured one or more CCs.
  • the sounding reference signal may be a Sounding RS.
  • the UE in the process of communicating with the base station, the UE needs to send a Sounding RS to the base station to ensure that the base station can detect the signal quality of the UE over the entire uplink bandwidth in real time.
  • the UE when the CC is reconfigured for the UE, the UE may be instructed to first send the Sounding RS on the newly configured CC, and then the base station may determine the TA value based on the detection of the Sounding RS.
  • Step 702 Receive one or more new configurations in the UE according to the indication information.
  • Step 703 The timing advance TA adjustment message sent to the UE according to the sounding reference signal, so that the UE applies the TA value carried in the TA adjustment message to the CC corresponding to the identifier information. .
  • the uplink synchronization indication message includes:
  • the TA adjustment message includes: an extended TA value adjustment command, where the extended TA value adjustment command is included in a newly configured CC
  • the TA value to be adjusted, or the extended TA value adjustment command includes one or more TA values that need to be adjusted on the newly configured multiple CCs and identification information of the CC corresponding to each TA value.
  • the extended TA adjustment command may adopt the extended TA adjustment command described in the above embodiments 1 to 5, and details are not described herein again.
  • the TA adjustment message is a CC reconfiguration message, where the CC reconfiguration message includes a TA value that needs to be adjusted on a newly configured CC, or the CC is heavy.
  • the configuration message includes one or more TA values that need to be adjusted on the newly configured multiple CCs, and identification information of the CCs corresponding to the respective TA values.
  • the base station sends an uplink synchronization indication message carrying the indication information of the sounding RS to the UE, so that after receiving the uplink synchronization indication message, the UE may send a Sounding RS to the base station, so that the base station according to the Sounding
  • the RS calculates the TA value used on the newly configured CC of the UE, and sends the TA value to the UE. Therefore, in this embodiment, when the base station needs to configure a new CC for the UE, or when some or some CCs that the UE is using need to be replaced by the newly configured CC, the UE can be synchronized with the newly configured CC.
  • the UE performs an uplink synchronization process as long as the UE receives the CC reconfiguration message or the CC reconfiguration message includes the newly configured CC.
  • a set of reambles may be set in advance, and the preamble in the set is used exclusively for CC reconfiguration; or, in addition to the original random access channel, a new random access channel is specifically set for the CC weight.
  • a random access preamble is sent during configuration, or a PUSCH resource dedicated to transmitting a random access Preamble is scheduled for the UE during CC reconfiguration. Thereby avoiding the negative impact on the traditional random access process.
  • the method in this embodiment may include: the base station sends a CC reconfiguration message to the UE; after receiving the CC reconfiguration message, the UE selects a preamble from the preamble group dedicated to CC reconfiguration to send to the base station, or if the system does not Dedicated to the preamble group of CC reconfiguration, and a new random access channel is set for CC reconfiguration, the UE randomly selects one from the currently available preamble and transmits on the new random access channel dedicated to CC reconfiguration.
  • the preamble is sent to the base station, or if the system does not set a dedicated preamble and a new random access channel for the CC reconfiguration, the base station may schedule the UE in the CC reconfiguration message when sending the CC reconfiguration message to the UE.
  • Sending the PUSCH resource of the preamble the UE randomly selects one of the currently available preambles, and then sends the selected preamble on the PUSCH resource scheduled in the CC reconfiguration message; after receiving the preamble sent by the UE, the base station sends a TA adjustment command to the UE.
  • the TA adjustment command needs to include the identifier information of the detected preamble sent by the UE.
  • the identifier information may be the identifier information in the dedicated preamble group or the identifier information of all the preambles in the current cell.
  • the identification information of the newly configured CC may also be included.
  • the extended TA adjustment command can adopt the above The extended TA adjustment commands described in the first to fifth embodiments are not described again.
  • the UE when the base station needs to configure a new CC for the UE, or when some or some CCs that the UE is using need to be replaced by the newly configured CC, the UE can be synchronized with the newly configured CC.
  • FIG. 11 is a flowchart of Embodiment 10 of the uplink synchronization processing method of the present invention. As shown in FIG. 11, the method in this embodiment may include:
  • Step 801 Obtain a downlink timing value T1 of the component carrier CC or CC pair and a downlink timing advance amount TA1 and a downlink timing value T2 of the newly configured CC or CC pair;
  • Step 802 Apply a formula (2) to calculate an uplink timing advance amount TA2 of the newly configured CC,
  • Step 803 Apply the acquired TA2 to the newly configured CC.
  • the UE may adjust the TA status of the newly configured CC according to the TA value of the configured CC.
  • the UE may advance the downlink timing value and the uplink timing of the configured CC regardless of whether the multiple CCs share the TA.
  • the amount, and the downlink timing value of the newly configured CC calculates the uplink timing advance of the newly configured CC. It can be understood that this embodiment can be combined with the methods of other embodiments to calculate the TA value of the newly configured CC.
  • the UE when the base station needs to configure a new CC for the UE, or when some or some CCs that the UE is using need to be replaced by the newly configured CC, the UE can be synchronized with the newly configured CC.
  • the UE When the UE learns that it needs to perform uplink synchronization on one or more newly configured CCs, then The UE randomly selects one or more preambles, and sends the selected preamble to the base station on one or more CCs that need to perform uplink synchronization. In order to explicitly let the base station know the preamble selected by the UE, before the UE sends these preambles or the process of sending The UE reports the identification information of the selected preamble to the base station on the currently used CC, and the UE may report the index of the selected preamble to the base station in any of the following manners:
  • the base station may send the TA value obtained based on the detection of the preamble to the UE by using an existing random access response message, but when the UE is in the UE If the same preamble is sent on multiple CCs, multiple TA values need to be indicated in the random access response message, and the identification information of the CC corresponding to the multiple TA values needs to be indicated, that is, the UE explicitly knows the TA value and the CC. Correspondence between the two. Alternatively, a basic message or a CC reconfiguration message is sent to the UE.
  • the base station separately configures one uplink CC for the UE, and does not configure the downlink CC corresponding to the uplink CC for the UE, the UE cannot acquire the T2 value, in this case.
  • the UE may initiate an uplink synchronization operation on the uplink CC, that is, may perform a random access procedure on the uplink CC, or perform an uplink synchronization operation according to a method in another embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of Embodiment 1 of a user equipment according to the present invention.
  • the UE in this embodiment may include: a first receiving module 11, a first sending module 12, and a first processing module 13, where the first receiving The module 11 is configured to receive an uplink synchronization indication message sent by the base station, where the uplink synchronization indication message carries the newly configured one or more identification information of the component carrier CC.
  • the first sending module 12 is configured to learn, corresponding to the identifier information, When a CC of the new configuration, or all or a part of the CCs of the multiple CCs need to perform uplink synchronization, send the synchronization signaling to the base station; the first processing module 13 is configured to receive, at the first receiving module, the base station according to the Synchronization signaling timing After the TA adjustment message is advanced, the TA value carried in the TA adjustment message is applied to the CC that needs to perform uplink synchronization.
  • the implementation principle of the UE in this embodiment is the same as that in the first embodiment of the uplink synchronization processing method shown in FIG. 1 and will not be described again.
  • the first receiving module is further configured to receive, by the base station, according to the synchronization signaling.
  • An extended TA value adjustment command includes a TA value to be adjusted on a newly configured CC, or the extended TA value adjustment command is included in a newly configured multiple CC to be adjusted One or more TA values, and identification information of the CC corresponding to each TA value.
  • the implementation principle of the UE in this embodiment is the same as that in the third embodiment of the uplink synchronization processing method shown in FIG. 3, and details are not described herein again.
  • the first receiving module is further configured to receive, according to the synchronization signaling, the base station.
  • the transmitted extended TA value adjustment command receives the CC reconfiguration message sent by the base station.
  • the implementation principle of the UE in this embodiment is the same as that in the fourth embodiment of the uplink synchronization processing method shown in FIG. 5, and details are not described herein again.
  • the first receiving module is further configured to receive, by the base station, according to the synchronization signaling.
  • CC reconfiguration message the CC reconfiguration message includes a TA value that needs to be adjusted on a newly configured CC, or the CC reconfiguration message includes one or more TAs that need to be adjusted on a plurality of newly configured CCs The value, and the identification information of the CC corresponding to each TA value.
  • the implementation principle of the UE in this embodiment is the same as that in the fifth embodiment of the uplink synchronization processing method shown in FIG. 6 and will not be described again.
  • the first processing module when it is learned according to the uplink synchronization indication message that uplink synchronization is not required to be performed on all or part of CCs of a newly configured one or more CCs, the first processing module is further used to: Applying the TA value indicated in the uplink synchronization indication message to the newly configured CC that does not need to perform uplink synchronization.
  • the UE may use the acquired TA value and the newly configured CC to reach the UE.
  • Uplink synchronization and in the process, only the uplink synchronization indication message, for example, the CC reconfiguration message or the PDCCH, triggers the UE to perform uplink synchronization, thereby saving downlink radio resources.
  • the UE may send a synchronization message to the base station. For example, a dedicated preamble can obtain the TA value to be used on the newly configured CC from the base station, thereby improving the uplink synchronization speed.
  • the TA value indicated in the uplink synchronization indication message may be directly applied to the CC in the newly configured CC that does not need to perform uplink synchronization, or directly
  • the unique TA value of the CC being used is applied to the newly configured CC that does not need to perform uplink synchronization, so that the UE can also achieve uplink synchronization with the newly configured CC when it is not necessary to perform uplink synchronization.
  • FIG. 13 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
  • the base station in this embodiment may include: a second sending module 21 and a second receiving module 22, where the second sending module 21 is configured to user equipment.
  • the UE sends an uplink synchronization indication message, where the uplink synchronization indication message carries the newly configured one or more identification information of the component carrier CC;
  • the second receiving module 22 is configured to receive the synchronization signaling sent by the UE;
  • the sending module 21 is further configured to send a timing advance TA adjustment message to the UE according to the synchronization signaling, to indicate that the UE applies the TA value carried in the TA adjustment message to a CC that needs to perform uplink synchronization.
  • the implementation principle of the base station in this embodiment is the same as that in the first embodiment of the uplink synchronization processing method shown in FIG. 2, and details are not described herein again.
  • the second sending module is further configured to send to the UE.
  • An extended TA value adjustment command where the extended TA value adjustment command includes a TA value that the UE needs to adjust on a newly configured one CC, or the extended TA value adjustment command includes that the UE needs to be configured on multiple CCs that are newly configured. The adjusted one or more TA values and the identification information of the CC corresponding to each TA value.
  • the second sending module is further configured to send an extended TA value adjustment command to the UE.
  • CC reconfiguration message if the uplink synchronization indication message sent by the second sending module to the UE is a PDCCH, the second sending module is further configured to send an extended TA value adjustment command to the UE.
  • the implementation principle of the base station in this embodiment is the same as that in the fourth embodiment of the uplink synchronization processing method shown in FIG. 5, and details are not described herein again.
  • the second sending module is further configured to send the extended TA to the UE.
  • the value adjustment command and the CC reconfiguration message; or the second sending module is further configured to send a CC reconfiguration message to the UE, where the CC reconfiguration message includes a TA value that the UE needs to adjust on a newly configured CC.
  • the CC reconfiguration message includes one or more TA values that the UE needs to adjust on the newly configured multiple CCs, and identification information of the CC corresponding to each TA value.
  • the base station may send an uplink synchronization indication message to the UE, so that when the UE is configured with a new CC, or the newly configured CC is used to replace one or some CCs that the UE is using, the uplink may be used according to the uplink.
  • the synchronization indication message is informed whether the uplink synchronization needs to be performed, so that the UE achieves uplink synchronization with the newly configured CC, and the UE only triggers the uplink synchronization by using the uplink synchronization indication message, thereby saving downlink radio resources, and the UE needs to perform
  • the base station can be sent by sending synchronization signaling, such as a dedicated preamble, to the base station.
  • the TA value indicated in the uplink synchronization indication message may be directly applied to the CC in the newly configured CC that does not need to perform uplink synchronization, or directly
  • the unique TA value of the CC being used is applied to the newly configured CC that does not need to perform uplink synchronization, so that the UE can also achieve uplink synchronization with the newly configured CC when it is not necessary to perform uplink synchronization.
  • FIG. 14 is a schematic structural diagram of Embodiment 2 of a user equipment according to the present invention.
  • the UE in this embodiment may include: a third receiving module 31 and a third processing module 32, where the third receiving module 31 is configured to receive An uplink synchronization indication message sent by the base station, where the uplink synchronization indication message carries the newly configured one or more identification information of the component carrier CC; the third processing module 32 is configured to learn, according to the identification information of the CC, a newly configured one.
  • the multiple CCs and the currently used CCs do not belong to the same CC group, perform uplink synchronization on the one or more CCs of the newly configured, where the CC packets are one or more CCs sharing the same TA value.
  • the composition of the CC group When the multiple CCs and the currently used CCs do not belong to the same CC group, perform uplink synchronization on the one or more CCs of the newly configured, where the CC packets are one or more CCs sharing the same TA value.
  • the third receiving module 31 is further configured to receive CC group information that is sent by the base station by using a broadcast mode or dedicated signaling, where the CC group information is used to indicate that the same CC packet is used in the same CC packet.
  • the CC shares a TA value.
  • the implementation principle of the UE in this embodiment is the same as that in the sixth embodiment of the uplink synchronization processing method shown in FIG. 7 and will not be described again.
  • the UE may know whether the newly configured CC belongs to a certain CC group according to the CC group information and the newly configured identification information, and directly uses the CC when belonging to a certain CC group.
  • the TA corresponding to the packet implements uplink synchronization.
  • the uplink synchronization operation may be initiated to the base station, so that the TA value used on the newly configured CC is obtained from the base station. Therefore, when the base station needs to configure a new CC for the UE, or when some or some CCs that the UE is using need to be replaced by the newly configured CC, the UE can be synchronized with the newly configured CC.
  • FIG. 15 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention, as shown in FIG.
  • the base station may include: a third sending module 41 and a fourth sending module 42, where the third sending module 41 is configured to send the component carrier CC group information to the user equipment UE by using a broadcast mode or dedicated signaling, where the CC group information is used for The CCs in the same group are instructed to share one TA value.
  • the fourth sending module 42 is configured to send an uplink synchronization indication message to the UE, where the uplink synchronization indication message carries the identifier information of the newly configured one or more CCs.
  • the UE learns that the newly configured one or more CCs do not belong to the same CC group as the currently used CC according to the identification information of the CC, performing uplink synchronization on the newly configured one or more CCs.
  • the implementation principle of the seventh embodiment of the present embodiment is the same as that of the seventh embodiment of the uplink synchronization processing method shown in FIG. 8 and will not be described again.
  • the base station of the present embodiment when having a CC packet, may enable the UE to learn whether the newly configured CC belongs to a certain CC group according to the CC group information and the newly configured identification information, so that when the UE belongs to a certain CC group,
  • the uplink synchronization is implemented by directly using the TA corresponding to the CC packet.
  • the uplink synchronization operation may be initiated to the base station, so that the TA value used on the newly configured CC is obtained from the base station. Therefore, when the base station of the embodiment needs to configure a new CC for the UE, or when some or some CCs that the UE is using need to be replaced by the newly configured CC, the UE can be synchronized with the newly configured CC.

Description

上行同步处理方法、 用户设备和基站
技术领域
本发明涉及通信领域, 尤其涉及一种上行同步处理方法、 用户设备和基 站。 背景技术
高级长期演进( Long Term Evolved-Advanced, 以下简称: LTE-A ) 系统 需要支持比 LTE系统更宽的带宽, 因此可以将多个载波进行聚合。 所谓载波 聚合就是将多个组成载波(Component Carrier, 以下简称: CC ) 汇聚成一个 带宽高于 LTE系统带宽的载波, 以支持高速数据速率。
在现有技术中, 当用户设备( User Equipment , 以下简称: UE )使用多 个 CC时, 在某些场景下, 每个 CC的定时提前量(Time Advanced, 以下简 称: TA值)是不同的。 例如, 当基站在不同的中继器(Repeater )上配置了 不同的 CC时, 或者不同频率的 CC经过了不同的散射路径时, 不同 CC的 TA值是不相同的。 又例如, UE使用两个不同的 CC与两个非协作的接入点 通信时, 这两个 CC的 TA值不同。
因此, 在 UE使用多个 CC的 TA值不同的情况下, 如果基站需要为 UE 配置新的 CC, 或者 UE正在使用的某个或者某些 CC需要被新配置的 CC替 换掉时, UE如何与新配置的 CC达到上行同步成为亟待解决的问题。 发明内容
本发明实施例提供一种上行同步处理方法、用户设备和基站,以解决 UE 如何与新配置的 CC达到上行同步的问题。
为实现上述目的, 本发明实施例提供一种上行同步处理方法, 包括: 接收基站发送的上行同步指示消息, 所述上行同步指示消息中携带新配 置的一个或多个组成载波 CC的标识信息;
在获知与所述标识信息对应的新配置的一个 CC、 或多个 CC中的全部或 部分 CC需要执行上行同步时, 将同步信令发送给基站; 以及
接收所述基站根据所述同步信令发送的定时提前量 TA调整消息, 并将 所述 TA调整消息中携带的 TA值应用在需要执行上行同步的 CC上。
本发明实施例提供一种上行同步处理方法, 包括:
向用户设备 UE发送上行同步指示消息, 所述上行同步指示消息中携带 新配置的一个或多个组成载波 CC的标识信息;
接收所述 UE发送的同步信令;
根据所述同步信令向所述 UE发送定时提前量 TA调整消息,以指示所述
UE将所述 TA调整消息中携带的 TA值应用在需要执行上行同步的 CC上。
相应地, 本发明实施例提供一种用户设备, 包括:
第一接收模块, 用于接收基站发送的上行同步指示消息, 上行同步指示 消息中携带新配置的一个或多个组成载波 CC的标识信息;
第一发送模块, 用于在获知与所述标识信息对应的新配置的一个 CC、 或 多个 CC中的全部或部分 CC需要执行上行同步时, 将同步信令发送给基站; 第一处理模块, 用于在第一接收模块接收所述基站根据所述同步信令发 送的定时提前量 TA调整消息之后,将所述 TA调整消息中携带的 TA值应用 在需要执行上行同步的 CC上。
本发明实施例提供一种基站, 包括:
第二发送模块, 用于向用户设备 UE发送上行同步指示消息, 所述上行 同步指示消息中携带新配置的一个或多个组成载波 CC的标识信息;
第二接收模块, 用于接收所述 UE发送的同步信令;
所述第二发送模块还用于根据所述同步信令向所述 UE发送定时提前量 TA调整消息, 以指示所述 UE将所述 TA调整消息中携带的 TA值应用在需 要执行上行同步的 CC上。 本发明上述实施例, 在基站需要为 UE配置新的 CC, 或者 UE正在使用 的某个或者某些 CC需要被新配置的 CC替换掉时,UE可以使用该获取的 TA 值与新配置的 CC达到上行同步, 而且, 在该过程仅通过上行同步指示消息 触发 UE执行上行同步,从而节约了下行无线资源,在 UE需要执行上行同步 时, 可以通过向基站发送专用 preamble, 即可从基站获取新配置的 CC上需 要使用的 TA值, 从而提高了上行同步速度。
本发明实施例提供另一种上行同步处理方法, 包括:
接收基站发送的上行同步指示消息, 所述上行同步指示消息中携带新配 置的一个或多个组成载波 CC的标识信息;
若根据所述 CC的标识信息获知新配置的一个或多个 CC与当前使用的
CC不属于相同的 CC分组, 则在所述新配置的一个或多个 CC上执行上行同 步, 其中, 所述 CC分组是共享同一定时提前量 TA值的一个或多个 CC组成 的 CC组。
本发明实施例提供另一种上行同步处理方法, 包括:
通过广播方式或者专用信令向所述 UE发送 CC分组信息,所述 CC分组 信息用于指示同一 CC分组内的 CC共享一个定时提前量 TA值;
向用户设备 UE发送上行同步指示消息, 所述上行同步指示消息中携带 新配置的一个或多个 CC的标识信息,以使所述 UE在根据所述 CC的标识信 息获知新配置的一个或多个 CC与当前使用的 CC不属于相同的 CC分组时, 在所述新配置的一个或多个 CC上执行上行同步。
相应地, 本发明实施例提供一种用户设备, 包括:
第三接收模块, 用于接收基站发送的上行同步指示消息, 所述上行同步 指示消息中携带新配置的一个或多个组成载波 CC的标识信息;
第三处理模块, 用于在根据所述 CC的标识信息获知新配置的一个或多 个 CC与当前使用的 CC不属于相同的 CC分组时,在所述新配置的一个或多 个 CC上执行上行同步, 其中, 所述 CC分组是共享同一 TA值的一个或多个 CC组成的 CC组。
本发明实施例提供一种基站, 包括:
第三发送模块,用于通过广播方式或者专用信令向所述 UE发送 CC分组 信息,所述 CC分组信息用于指示同一 CC分组内的 CC共享一个定时提前量 TA值;
第四发送模块, 用于向 UE发送上行同步指示消息, 所述上行同步指示 消息中携带新配置的一个或多个 CC的标识信息, 以使所述 UE在根据所述 CC的标识信息获知新配置的一个或多个 CC与当前使用的 CC不属于相同的 CC分组时, 在所述新配置的一个或多个 CC上执行上行同步。
本发明上述实施例,在具有 CC分组的情况下,可以使 UE根据 CC分组 信息以及新配置的标识信息获知新配置的 CC是否属于某个 CC分组,在属于 某个 CC分组时, 直接使用该 CC分组对应的 TA实现上行同步, 在不属于某 个 CC分组时, 可以向基站发起上行同步操作, 从而从基站获取新配置的 CC 上使用的 TA值。 因此, 在基站需要为 UE配置新的 CC, 或者 UE正在使用 的某个或者某些 CC需要被新配置的 CC替换掉时, 可以使 UE与新配置的 CC达到上行同步。
本发明实施例还提供一种上行同步处理方法, 包括:
获取正在使用的组成载波 CC或 CC对的下行定时值 Tl、 上行定时提前 量 TA1、 以及新配置的 CC或 CC对的下行定时值 Τ2;
应用公式 ( 2 )计算获取新配置的 CC的上行定时提前量 ΤΑ2,
TA 2=ΤΑ1+2 ( T2 - T1 ) ( 2 ) ; 将获取的 ΤΑ2应用在新配置的 CC上。
本发明上述实施例中, UE可以根据已经配置的 CC的 ΤΑ值, 自行调整 新配置的 CC的 ΤΑ情况,无论是否多个 CC共享 TA, UE均可以根据已经配 置的 CC的下行定时提前量和上行定时提前量,以及新配置的 CC的下行定时 提前量, 计算出新配置的 CC的上行定时提前量。 本实施例在基站需要为 UE 配置新的 CC, 或者 UE正在使用的某个或者某些 CC需要被新配置的 CC替 换掉时, 可以使 UE现与新配置的 CC达到上行同步。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例中所需 要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发 明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的 前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明上行同步处理方法实施例一的流程图
图 2为本发明上行同步处理方法实施例二的流程图;
图 3为本发明上行同步处理方法实施例三的流程图;
图 4为本发明上行同步处理方法实施例三中 TA调整命令的一种结构示 意图;
图 5为本发明上行同步处理方法实施例四的流程图;
图 6为本发明上行同步处理方法实施例五的流程图;
图 7为本发明上行同步处理方法实施例六的流程图;
图 8为本发明上行同步处理方法实施例七的流程图;
图 9为本发明上行同步处理方法实施例八的流程图;
图 10为本发明上行同步处理方法实施例九的流程图
图 11为本发明上行同步处理方法实施例十的流程图;
图 12为本发明用户设备实施例一的结构示意图;
图 13为本发明基站实施例一的结构示意图;
图 14为本发明用户设备实施例二的结构示意图;
图 15为本发明基站实施例二的结构示意图。 具体实施方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进 行清楚、 完整地描述,显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没 有作出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的 范围。
图 1为本发明上行同步处理方法实施例一的流程图, 如图 1所示, 本实 施例的方法可以包括:
步骤 101、 接收基站发送的上行同步指示消息;
该上行同步指示消息中携带新配置的一个或多个 CC的标识信息。
举例来说, 该上行同步指示消息可以为 CC 重配置消息或者 (Physics
Downlink Control Channel, 以下简称: PDCCH ) ;
其中, 上行同步指示消息中携带新配置的一个或多个 CC 的标识信息, 该标识信息用于基站,例如 eNodeB指示 UE新配置的是哪一个或哪几个 CC, 或者, 对于 FDD系统, 当 eNodeB成对进行 CC的重配置时, 该 CC标识信 息也可以表示一对或者多对上下行 CC, 所谓成对进行 CC 的重配置, 是指 eNodeB通知配置一个上行 CC和一个下行 CC, 这样一个上行 CC和一个下 行 CC构成一个 CC对, 这种情况下, CC的标识信息可以是 CC对的标识信 息, 其它实施例中关于 CC标识信息的意义和此外相同, 因此在本发明实施 例的其他部分不再特别说明。
需要说明的是,该 CC重配置消息中还可以携带新配置的 CC的详细配置 信息。
在本实施例中, 该上行同步指示消息可以作为独立的无线资源控制
( Radio Resource Control, 以下简称: RRC )消息或者媒体接入控制协议数据 单元( Medium Access Control Protocol Data Unit, 以下简称: MAC PDU )发 送, 或者嵌套在 RRC连接重配置消息中发送。
步骤 102、 在根据所述上行同步指示消息获知新配置的一个 CC或多个 CC中的全部或部分 CC需要执行上行同步时, 将同步信令发送给基站;
UE在接收该上行同步指示消息, 例如 CC重配置消息或者 PDCCH后, 既可以获知新配置的是哪一个或哪几个 CC,也可以获知是否需要与新配置的 一个 CC或多个 CC中的全部或部分 CC执行上行同步。
所述同步信令即是一个同步序列。 举例来说, 本实施例的同步信令可以 为专用前导码 ( reamble )或者探通参考信号 ( Sounding reference signal, 以 下简称: Sounding RS ) 。 在需要 UE执行上行同步的情况下, 该 CC重配置 消息或者 PDCCH中可以包含为 UE分配的专用前导码,另外该专用 preamble 指示 UE是否需要在新配置的一个或者多个 CC上执行上行同步的方式可以 是:
1、 显式指示: 即在 CC重配置消息或者 PDCCH中利用专用的比特指示 信息指示 UE是否需要在一个 CC或者多个 CC中的全部或者部分 CC上执行 上行同步;
2、 隐式指示: CC重配置消息或者 PDCCH中包含专用 preamble的分配 信息, 则表示需要 UE在一个 CC或者多个 CC中的全部或者部分 CC上执行 上行同步, 没有专用 preamble的分配信息, 则表示 UE可以不执行上行同步; 即 UE可以判断 CC重配置消息或者 PDCCH, 如果包含专用 preamble, 则使 用该 preamble执行上行同步。
因此, 步骤 102中所述的根据所述上行同步指示消息获知新配置的一个 CC或多个 CC中的全部或部分 CC需要执行上行同步, 可以包括:
根据所述上行同步指示消息中用于指示是否在新配置的一个 CC 或多个 CC中的全部或部分 CC上执行上行同步的比特指示信息获知需要在新配置的 一个 CC或多个 CC中的全部或部分 CC上执行上行同步; 或者
根据所述上行同步指示消息中包含专用前导码的分配信息获知需要在新 配置的一个 CC或多个 CC中的全部或部分 CC上执行上行同步。
因此, UE根据上行同步指示消息判断需要执行上行同步时, 即可从该上 行同步指示消息中获取相应的专用 preamble, 在执行上行同步时, 即可将该 专用 preamble发送给基站, 以请求基站根据该专用 preamble指示可以使用的 TA值。
步骤 103、接收所述基站根据所述同步信令发送的 TA调整消息, 并将所 述 TA调整消息中携带的 TA值应用在需要执行上行同步的 CC上。
基站在接收 UE发送的专用 preamble后, 即可向 UE发送 TA调整消息, 该 TA调整消息中可以携带需要应用在新配置的需要执行上行同步的 CC上的 TA值。
在具体实现时, UE可以应用公式 ( 1 )计算获取需要执行上行同步的 CC 上所需使用的 ^ 并将该 应用在所述 CC上,
TA = TA f + (TA - M) x Ts ( 1 ) 其中, 表示当前正在使用的 CC上的 TA值、 基站在上行同步指 示消息中发送的参考值或者是在第一次建立 RRC连接时的 CC上的 TA值, 或者是主载波 ( anchor CC ) 上的 TA 值; M为预设经验值; 7; = 1 /(15000 x 2048)。
至此, UE即可以在需要执行上行同步的 CC上使用该 7¾ , 从而在基站 需要为 UE配置新的 CC , 或者 UE正在使用的某个或者某些 CC需要被新配 置的 CC替换掉时, UE可以使用该: 与新配置的 CC达到上行同步,而且, 在该过程仅通过上行同步指示消息触发 UE执行上行同步, 从而节约了下行 无线资源, 在 UE需要执行上行同步时, 可以通过向基站发送同步信令, 例 如专用 preamble, 即可从基站获取新配置的 CC上需要使用的 TA值,从而提 高了上行同步速度。
在本发明上行同步处理方法另一个实施例中, 在根据所述上行同步指示 消息获知在新配置的一个 CC或多个 CC中的全部或部分 CC上不需要执行上 行同步时, 将所述上行同步指示消息中指示的 TA值应用到新配置的不需要 执行上行同步的 CC上; 或者在根据所述上行同步指示消息获知在新配置的 一个 CC或多个 CC中的全部或部分 CC上不需要执行上行同步时,将当前正 在使用的 CC上唯一的 TA值应用在新配置的一个或多个 CC中不需要执行上 行同步的全部或部分 cc。
所述根据所述上行同步指示消息获知新配置的一个 CC或多个 CC中的全 部或部分 CC上不需要执行上行同步, 可以包括:
当新配置的一个 CC与当前使用的一个或多个 CC中任意一个 CC的 TA 值相同时, 所述指示的 TA值包括: 新配置的一个 CC上需要调整的 TA值, 或者当前正在使用的 CC的标识信息, 所述 CC的标识信息表示新配置的 CC 上需要使用的 TA值与所述 CC的标识信息对应的 CC的 TA值相同;
当新配置的多个 CC与当前使用的 CC的 TA值相同时, 所述指示的 TA 值包括: 与多个新配置的 CC分别对应的 TA值、 与多个新配置的 CC分别对 应的 TA值的编号, 或者当前使用的 CC的编号, 新配置的 CC所需使用的 TA值与所述 CC的编号对应的 CC的 TA值相同。
具体来说,如果不需要 UE执行上行同步时,基站可以为 UE指示可以使 用的 TA值, 具体方式可以是:
当 UE当前仅仅被配置使用一个 CC或正在使用的多个 CC的 TA值都相 同时, 则指示 UE是否可以使用当前正在使用的 TA值;
或者当 UE当前被配置使用多个 CC, 并且 UE正在使用多个不同的 TA 值时, 则指示 UE应该在新配置的 CC上使用的 TA值。 在这种情况下, 基站 既可以直接将 UE需要使用的 TA值通知 UE , 也可以将 UE当前正在使用的 TA值进行编号, 将需要在新配置的 CC上使用的 TA值的编号通知 UE, 或 者还可以将正在使用的某个 CC的编号通知 UE, UE接收到该 CC的编号信 息, 则表示新配置的 CC可以使用与该编号对应的 CC上的 TA值。
还有一种情况为,在根据所述上行同步指示消息获知在新配置的一个 CC 或多个 CC中的全部或部分 CC上不需要执行上行同步时,将当前正在使用的 CC上唯一的 TA值, 应用在新配置的一个或多个 CC中不需要执行上行同步 的 CC上。 具体来说, UE和基站可以预先知道 UE当前正在使用的所有 CC 的 TA值均相同, 即所有 CC使用唯一的 TA值, 此时, 基站不用专门为 UE 指示 TA值, 当 UE接收到上行同步指示消息后获知新配置的一个 CC或多个 CC中的全部或部分 CC上不需要执行上行同步时, 即可直接将当前正在使用 的 CC的唯一的 TA值应用在新配置的不需要执行上行同步的 CC上。
因此, 当 UE根据接收的上行同步指示消息获知不需要执行上行同步时, 即可直接将该上行同步指示消息中指示的 TA值应用在新配置的 CC中不需要 执行上行同步的 CC, 或者直接将当前正在使用的 CC的唯一的 TA值应用在 新配置的不需要执行上行同步的 CC上,从而使得 UE在不需要执行上行同步 时也可以与新配置的 CC达到上行同步。
图 2为本发明上行同步处理方法实施例二的流程图, 如图 2所示, 本实 施例的方法可以包括:
步骤 201、 向用户设备 UE发送上行同步指示消息;
所述上行同步指示消息中携带新配置的一个或多个组成载波 CC 的标识 信息。
举例来说, 该上行同步指示消息可以为 CC重配置消息或者 PDCCH; 上行同步指示消息可以作为独立的 RRC消息或者 MAC PDU发送,或者 嵌套在 RRC连接重配置消息中发送。
具体来说, 在需要 UE执行上行同步的情况下, 该上行同步指示消息中 可以包含为 UE分配的专用 preamble或者 Sounding RS,通过该专用 preamble 或者 Sounding RS指示 UE是否需要在新配置的一个或者多个 CC上执行上行 同步的方式可以采用上述的显式指示或者隐式指示, 不再赘述。
因此, 步骤 201 中所述的向 UE发送上行同步指示消息, 可以包括: 向 所述 UE发送扩展的 TA值调整命令; 相应地, 所述方法还包括: 向 UE发送 CC重配置消息, 以使所述 UE根据所述 CC重配置消息获取与所述标识信息 对应的 cc的配置信息; 或者
可以包括: 向所述 UE发送 CC重配置消息, 所述 CC重配置消息包含 UE在新配置的一个 CC上需要调整的 TA值, 或者所述 CC重配置消息包含 UE在新配置的多个 CC上需要调整的一个或多个 TA值、 以及与各个 TA值 对应的 CC的标识信息。
步骤 202、 在所述 UE根据所述上行同步指示消息获知新配置的一个 CC 或多个 CC中的全部或部分 CC需要执行上行同步后,接收所述 UE发送的同 步信令;
UE根据上行同步指示消息判断需要执行上行同步时,即可从该上行同步 指示消息中获取相应的专用 preamble或者 Sounding RS , 在执行上行同步时, 即可将该专用 preamble或者 Sounding RS发送给基站, 基站可以根据该专用 preamble或者 Sounding RS指示 UE可以使用的 TA值。
由于基站根据带宽的需求既可以为 UE新配置一个 CC, 也可以为 UE新 配置多个 CC或者多个 CC组(一个上行 CC和一个下行 CC可以称之为一个 CC组) 。 对于新配置多个 CC或者多个 CC组的情况, 基站可以仅为 UE分 配一个专用 preamble , 即这个专用 preamble是多个 CC共享使用的; 当然, 也可以分配多个 preamble给 UE。 因此, 步骤 202中所述的接收所述 UE发送 的专用前导码, 可以包括: 接收所述 UE发送的一个专用前导码, 所述一个 专用前导码在新配置的多个 CC 中需要执行上行同步的全部或部分 CC上发 送; 或者接收所述 UE发送的多个专用前导码, 所述多个专用前导码在新配 置的多个 CC中需要执行上行同步的全部或部分 CC上发送。
步骤 203、 根据所述同步信令向所述 UE发送定时提前量 TA调整消息, 以使所述 UE将所述 TA调整消息中携带的 TA值应用在需要执行上行同步的
CC上。
以同步信令是专用 preamble 为例来说, 基站在接收 UE 发送的专用 preamble后, 即可向 UE发送 TA调整消息, 该 TA调整消息中可以携带需要 应用在需要执行上行同步的新配置的 CC上的 TA值。
向所述 UE发送 TA调整消息, 可以包括: 向所述 UE发送扩展的 TA值 调整命令,所述扩展的 TA值调整命令包含 UE在新配置的一个 CC上需要调 整的 TA值, 或者所述扩展的 TA值调整命令包含 UE在新配置的多个 CC上 需要调整的一个或多个 TA值、 以及与各个 TA值对应的 CC的标识信息。
在具体实现时, UE可以应用公式 ( 1 )计算获取需要执行上行同步的 CC 上所需使用的 TA , 并将该 应用在所述 CC上,
至此, UE即可以在需要执行上行同步的 CC上使用该: 从而在基站 需要为 UE配置新的 CC , 或者 UE正在使用的某个或者某些 CC需要被新配 置的 CC替换掉时, UE可以使用该 与新配置的 CC达到上行同步,而且, 在该过程仅通过上行同步指示消息触发 UE执行上行同步, 从而节约了下行 无线资源, 在 UE需要执行上行同步时, 可以通过向基站发送同步信令, 例 如专用 preamble, 即可从基站获取新配置的 CC上需要使用的 TA值,从而提 高了上行同步速度。
在本发明上行同步处理方法另一个实施例中, 当基站不需要 UE执行上 行同步时, 可以采用以下方式:
向所述 UE发送携带指示的 TA值的上行同步指示消息,当新配置的一个 CC与当前使用的一个或多个 CC中任意一个 CC的 TA值相同时, 所述指示 的 TA值可以包括: 新配置的一个 CC上需要调整的 TA值, 或者当前正在使 用的 CC的标识信息, 所述 CC的标识信息表示新配置的 CC上需要使用的 TA值与所述 CC的标识信息对应的 CC的 TA值相同;
当新配置的多个 CC与当前使用的 CC的 TA值相同时, 所述指示的 TA 值可以包括: 与多个新配置的 CC分别对应的 TA值、 与多个新配置的 CC分 别对应的 TA值的编号, 或者当前使用的 CC的编号, 新配置的 CC所需使用 的 TA值与所述 CC的编号对应的 CC的 TA值相同。
具体来说,如果不需要 UE执行上行同步时,基站可以为 UE指示可以使 用的 TA值, 具体方式可以是:
当 UE当前仅仅被配置使用一个 CC或正在使用的多个 CC的 TA值相同 时, 则指示 UE是否可以使用当前正在使用的 TA值;
或者当 UE当前被配置使用多个 CC , 并且 UE正在使用多个不同的 TA 值时, 则指示 UE应该在新配置的 CC上使用的 TA值。 在这种情况下, 基站 既可以直接将 UE需要使用的 TA值通知 UE , 也可以将 UE当前正在使用的 TA值进行编号, 将需要在新配置的 CC上使用的 TA值的编号通知 UE, 或 者还可以将正在使用的某个 CC的编号通知 UE, UE接收到该 CC的编号信 息, 则表示新配置的 CC可以使用与该编号对应的 CC上的 TA值。
还有一种情况为,在根据所述上行同步指示消息获知在新配置的一个 CC 或多个 CC中的全部或部分 CC上不需要执行上行同步时,将当前正在使用的 CC上唯一的 TA值应用在新配置的一个或多个 CC中不需要执行上行同步的 全部或部分 CC。 具体来说, UE和基站可以预先知道 UE当前正在使用的所 有 CC的 TA值均相同, 即所有 CC使用唯一的 TA值, 此时, 基站不用专门 为 UE指示 TA值, 当 UE接收到上行同步指示消息后获知新配置的一个 CC 或多个 CC中的全部或部分 CC上不需要执行上行同步时,即可直接将当前正 在使用的 CC的唯一的 TA值应用在新配置的不需要执行上行同步的 CC上。
因此, 当 UE根据接收的上行同步指示消息获知不需要执行上行同步时, 即可直接将该上行同步指示消息中指示的 TA值应用在新配置的 CC中不需要 执行上行同步的 CC, 或者直接将当前正在使用的 CC的唯一的 TA值应用在 新配置的不需要执行上行同步的 CC上,从而使得 UE在不需要执行上行同步 时也可以与新配置的 CC达到上行同步。 均以同步信令为专用 preamble为例进行说明。
图 3为本发明上行同步处理方法实施例三的流程图, 如图 3所示, 本实 施例的方法可以包括: 步骤 301a、 基站向 UE发送 CC重配置消息;
CC重配置消息中携带新配置的一个或多个 CC的标识信息,该标识信息 用于基站指示 UE新配置的是哪一个或哪几个 CC。 该 CC重配置消息中还可 以携带新配置的 CC的详细配置信息。
UE在接收该 CC重配置消息后, 既可以获知新配置的是哪一个或哪几个
CC, 也可以获知新配置的一个 CC或多个 CC中的全部或部分 CC是否需要 执行上行同步。
步骤 302a、 UE根据该 CC重配置消息判断是否需要执行上行同步,如是 则执行步骤 303a, 否则执行步骤 304a;
具体来说,在需要 UE执行上行同步的情况下,该 CC重配置消息中包含 为 UE分配的专用 preamble。
在不需要 UE执行上行同步的情况下, 为 UE指示可以使用的 TA值, 具 体方式在前述实施例中已经说明, 不再赘述。
UE 在接收该 CC 重配置消息后, 如果该 CC 重配置消息指示了专用 preamble, 则表示 UE需要在新配置的一个 CC或者多个 CC的部分或者全部 CC上执行上行同步, 如果该 CC重配置消息指示了 TA的相关信息, 则 UE 不需要执行上行同步,可以直接根据该 TA的相关信息与新配置的 CC实现上 行同步。
步骤 303a、 UE向基站发送该专用 preamble, 执行步骤 305a;
在本实施例中, 基站根据带宽的需求既可以为 UE新配置一个 CC, 也可 以为 UE新配置多个 CC或者多个 CC对(一个上行 CC和一个下行 CC可以 称之为一个 CC对)。 对于新配置多个 CC或者多个 CC对的情况, 基站可以 仅为 UE分配一个专用 preamble, 即这个专用 preamble是多个 CC共享使用 的; 当然, 也可以分配多个 preamble给 UE。
UE在接收到基站发送的 CC重配置消息后,在获知需要执行上行同步时, 即可将该 CC重配置消息中指示的专用 preamble发送给基站, 从而使得基站 可以根据该专用 preamble向 UE反馈 TA值。
步骤 304a、 UE将 CC重配置消息中指示的 TA值应用到新配置的不需要 执行上行同步的 CC上。
步骤 305a、 基站向 UE发送扩展的 TA调整命令。
该扩展的 TA调整命令中可以包含该 TA值对应的 CC的标识信息。如果 当新配置的 CC仅有一个或者一对时,或者当新配置的多个 CC中仅有一个或 者一对需要执行上行同步时, 也可以不包含 CC的标识信息, 而默认为该 TA 调整命令就是对应于新配置的 CC的 TA调整。 然后, UE将该 TA值应用到 新配置的 CC中需要执行上行同步的 CC上。
举例来说, 该扩展的 TA调整命令可以为 MAC PDU, 图 4为本发明上行 同步处理方法实施例三中 TA调整命令的一种结构示意图, 如图 4所示, CC 的标识信息 , 即 CC index的 bit数为 2-3个 bit, 而扩展的 TA调整命令 extent TA command占用的 bit数可以为 5-6个 bit, 或者可以占用更多的 bit数。 为 了将本实施例中的 MAC PDU与 UE接收的其它 MAC PDU区别 , 本实施例 中的 MAC PDU可以使用当前 LTE系统预留的逻辑信道发送扩展的 TA调整 命令的 MAC PDU, 例如可以使用索引号为 11011的逻辑信道, 当然也可以 使用其它 LTE系统预留的逻辑信道。
步骤 306a、 UE将扩展的 TA调整命令中携带的 TA值应用在需要执行上 行同步的 CC上。
举例来说, UE可以采用公式( 1 )计算 TA值, 或者 TA的计算方式也 可以是: ew = 7¾x 。
此外,在该实施例中, 当基站在 CC重配置消息中为 UE新配置了多个需 要执行上行同步的 CC时,则基站可以在该 CC重配置消息中明确通知 UE应 该在哪个 CC上接收上述 TA调整命令。 即当基站向 UE发送 CC重配置消息 时, 指示 UE用于接收 TA调整命令的 CC的标识信息。 或者, 基站也可以使 用专用的 RRC信令或者 MAC PDU或者物理层信令通知 UE接收 TA调整命 令的 CC的标识信息。在本发明其他实施例中,接收 TA调整命令的方法都可 以使用上述方法, 因此在本发明其他部分不再重复描述。
至此, UE即可以在需要执行上行同步的 CC上使用该 7¾ , 从而在基站 需要为 UE配置新的 CC, 或者 UE正在使用的某个或者某些 CC需要被新配 置的 CC替换掉时, UE可以使用该: 与新配置的 CC达到上行同步,而且, 在该过程仅通过上行同步指示消息触发 UE执行上行同步, 从而节约了下行 无线资源, 在 UE需要执行上行同步时, 可以通过向基站发送专用 preamble, 即可从基站获取新配置的 CC上需要使用的 TA值,从而提高了上行同步速度。
此外, 在该实施例中, 当 UE在使用多个组成载波的通信过程中, 当基 站需要 UE在正在使用的多个组成载波上精确调整当前的 TA值时,也可以使 用步骤 305a所描述的, 即图四所示的扩展的 TA调整命令 MAC PDU。 即当 基站需要精确调整 UE正在使用的多个组成载波的 TA值时,可以发送该扩展 的 TA调整命令 MAC PDU给 UE, 该 TA调整命令 MAC PDU包含需要 UE 调整的组成载波的标识信息以及对应的需要调整的 TA值。 在这种情况下, 所需调整的 TA值与步骤 305a中所需调整的 TA值的不同仅在于, 这种情况 下的 TA值调整粒度更小, 即更加精确的调整。 UE接收到该 TA调整命令 MAC PDU后, 对应调整该命令中指示了各个组成载波上各自应该调整的 TA 值。 在本发明的其他实施例中, 都可以有上述精确的调整过程, 因此在其他 实施例中不再重复描述。
进一步地, 本实施例中的 CC重配置消息可以包含用于向所述基站发送 所述专用 preamble所需的物理上行共享信道 ( Physics Uplink Shared Channel, 以下简称: PUSCH ) 资源的信息、 以及开始使用该 PUSCH资源的帧信息。 具体来说, 基站在为那些待重配置 CC的 UE分配专用 preamble时, 为 UE 在待重配置的 CC的 PUSCH信道上调度发送该专用 preamble的专用资源, 在该实施例中,可以在上述触发 UE做上行同步的 CC重配置消息中为 UE分 配专用的 PUSCH资源, 以使得 UE在新分配的 CC上调度该 PUSCH资源发 送专用 preamble。 此时, CC重配置消息中需要明确通知 UE用于发送专用 Preamble的专用 PUSCH资源的帧号。基站通过在向 UE发送 CC重配置消息 时调度 UE发送专用 Preamble的专用 PUSCH资源,从而有效降低了 CC重配 置过程对正常的随机接入过程造成负面影响。
图 5为本发明上行同步处理方法实施例四的流程图, 如图 5所示, 本实 施例的方法可以包括:
步骤 301b、 基站向 UE发送 PDCCH;
PDCCH中可以携带新配置的一个或多个 CC的标识信息,该标识信息用 于基站指示 UE新配置的是哪一个或哪几个 CC。
步骤 302b、 UE根据该 PDCCH判断是否需要执行上行同步,如是则执行 步骤 303b, 否则执行步骤 304b;
具体来说, 在需要 UE执行上行同步的情况下, 该 PDCCH中包含为 UE 分酉己的专用 preamble。
在不需要 UE执行上行同步的情况下, 为 UE指示可以使用的 TA值, 具 体方式不再赘述。
UE在接收该 PDCCH后, 如果该 PDCCH指示了专用 preamble, 则表示 UE需要在新配置的一个 CC或者多个 CC的部分或者全部 CC上执行上行同 步, 如果该 PDCCH指示了 TA的相关信息, 则 UE不需要执行上行同步, 可 以直接根据该 TA的相关信息与新配置的 CC实现上行同步。
步骤 303b、 UE向基站发送该专用 preamble, 执行步骤 305b;
基站根据带宽的需求既可以为 UE新配置一个 CC, 也可以为 UE新配置 多个 CC或者多个 CC对。 对于新配置多个 CC或者多个 CC对的情况, 基站 可以仅为 UE分配一个专用 preamble, 即这个专用 preamble是多个 CC共享 使用的; 当然, 也可以分配多个 preamble给 UE。
UE在接收到基站发送的 PDCCH后, 在获知需要执行上行同步时, 即可 将该 PDCCH中指示的专用 preamble发送给基站, 从而使得基站可以根据该 专用 preamble向 UE反馈 TA值。
步骤 304b、 UE将 PDCCH中指示的 TA值应用到新配置的不需要执行上 行同步的 CC上。
步骤 305b、 基站向 UE发送扩展的 TA调整命令。
该扩展的 TA调整命令中可以包含该 TA值对应的 CC的标识信息。如果 当新配置的 CC仅有一个或者一对时,或者当新配置的多个 CC中仅有一个或 者一对需要执行上行同步时, 也可以不包含 CC的标识信息, 而默认为该 TA 调整命令就是对应于正在新配置的 CC的 TA调整。 然后, UE将该 TA值应 用到新配置的 CC中需要执行上行同步的 CC上。
举例来说, 该扩展的 TA调整命令可以为 MAC PDU,其结构可以采用图
4所示的结构, 不再赘述。
步骤 306b、 UE将扩展的 TA调整命令中携带的 TA值应用在需要执行上 行同步的 CC上。
UE计算 TA值的方法不再赘述。
至此, UE即可以在需要执行上行同步的 CC上使用该 TA , 从而在基站 需要为 UE配置新的 CC, 或者 UE正在使用的某个或者某些 CC需要被新配 置的 CC替换掉时, UE可以使用该: 与新配置的 CC达到上行同步,而且, 在该过程仅通过上行同步指示消息触发 UE执行上行同步, 从而节约了下行 无线资源, 在 UE需要执行上行同步时, 可以通过向基站发送专用 preamble, 即可从基站获取新配置的 CC上需要使用的 TA值,从而提高了上行同步速度。
步骤 307b、 UE接收基站发送的 CC重配置消息。
由于本实施例中, 触发 UE进行上行同步的是 PDCCH, 其不包含新配置 的 CC的一些详细配置信息, 因此, 本实施例中, 基站还可以向 UE发送 CC 重配置消息,从而使得 UE根据所述 CC重配置消息获取与所述标识信息对应 的 CC的配置信息。
进一步地, 本实施例也可为 UE分配专用的 PUSCH资源, 以使得 UE在 新分配的 CC上调度该 PUSCH资源发送专用 preamble, 从而有效降低了 CC 重配置过程对正常的随机接入过程造成负面影响。
图 6为本发明上行同步处理方法实施例五的流程图, 如图 6所示, 本实 施例的方法可以包括:
步骤 301c、 基站向 UE发送 PDCCH;
PDCCH中可以携带新配置的一个或多个 CC的标识信息,该标识信息用 于基站指示 UE新配置的是哪一个或哪几个 CC。
步骤 302c、 UE根据该 PDCCH判断是否需要执行上行同步,如是则执行 步骤 303c, 否则执行步骤 304c;
具体来说, 在需要 UE执行上行同步的情况下, 该 PDCCH中包含为 UE 分配的专用 preamble, 该专用 preamble可以采用上述的隐式指示或者显式指 示。
在不需要 UE执行上行同步的情况下, 为 UE指示可以使用的 TA值, 具 体方式不再赘述。
UE在接收该 PDCCH后, 如果该 PDCCH指示了专用 preamble, 则表示
UE需要在新配置的一个 CC或者多个 CC的部分或者全部 CC上执行上行同 步, 如果该 PDCCH指示了 TA的相关信息, 则 UE不需要执行上行同步, 可 以直接根据该 TA的相关信息与新配置的 CC实现上行同步。
步骤 303c、 UE向基站发送该专用 preamble, 执行步骤 305c;
基站根据带宽的需求既可以为 UE新配置一个 CC, 也可以为 UE新配置 多个 CC或者多个 CC对。 对于新配置多个 CC或者多个 CC对的情况, 基站 可以仅为 UE分配一个专用 preamble, 即这个专用 preamble是多个 CC共享 使用的; 当然, 也可以分配多个 preamble给 UE。
步骤 304c、 UE将 PDCCH中指示的 TA值应用到新配置的不需要执行上 行同步的 CC上。
步骤 305c、 基站向 UE发送 CC重配置消息。 CC重配置消息包含 UE在新配置的一个 CC上需要调整的 TA值, 或者 CC重配置消息包含 UE在新配置的多个 CC上需要调整的一个或多个 TA值 以及与各个 TA值对应的 CC的标识信息。
当基站为 UE新配置一个 CC时, UE通过该 CC重配置消息即可获取一 个 TA值; 当基站为 UE新配置多个 CC时, 该 CC重配置消息中的既可以为 新配置的多个 CC指示一个 TA值, 也可以为多个 CC分别指示 TA值, 当分 别指示 TA值时, 还需要将分别指示的 TA值与相应的 CC的标识信息对应。
步骤 306c、 UE将 CC重配置消息中携带的 TA值应用在需要执行上行同 步的 CC上。
UE计算 TA值的方法不再赘述。
至此, UE即可以在需要执行上行同步的 CC上使用该 7¾ , 从而在基站 需要为 UE配置新的 CC , 或者 UE正在使用的某个或者某些 CC需要被新配 置的 CC替换掉时, UE可以使用该: 与新配置的 CC达到上行同步,而且, 在该过程仅通过上行同步指示消息触发 UE执行上行同步, 从而节约了下行 无线资源, 在 UE需要执行上行同步时, 可以通过向基站发送专用 preamble, 即可从基站获取新配置的 CC上需要使用的 TA值,从而提高了上行同步速度。
进一步地, 本实施例也可为 UE分配专用的 PUSCH资源, 以使得 UE在 新分配的 CC上调度该 PUSCH资源发送专用 preamble, 从而有效降低了 CC 重配置过程对正常的随机接入过程造成负面影响。
图 7为本发明上行同步处理方法实施例六的流程图, 如图 Ί所示, 本实 施例的方法可以包括:
步骤 401、 接收基站发送的上行同步指示消息;
该上行同步指示消息可以为组成载波 CC重配置消息或者 PDCCH;
所述上行同步指示消息中携带新配置的一个或多个 CC 的标识信息, 该 标识信息用于基站, 例如 eNodeB指示 UE新配置的是哪一个或哪几个 CC。 该 CC重配置消息中还可以携带新配置的 CC的详细配置信息。在本实施例中, 该上行同步指示消息可以作为独立的 RRC消息或者 MAC PDU发送,或者嵌 套在 RRC连接重配置消息中发送。
步骤 402、若根据所述 CC的标识信息获知新配置的一个或多个 CC与当 前使用的 CC不属于相同的 CC分组,则在所述新配置的一个或多个 CC上执 行上行同步。
所述 CC分组指共享同一 TA值的一个或多个 CC组成的 CC组。
考虑多个 CC中, 可能有其中几个 CC可以共享一个 TA, 而另外的一些 CC可以共享另外一个 TA的情况。我们可以按照 CC是否可以共享同一个 TA, 将 CC进行分组。 为了使 UE能够预先获取 CC分组信息, 从而根据该分组信 息获知新配置的 CC是否是属于某个 CC分组,本实施例在步骤 701之前,还 可以包括: 接收基站通过广播方式或者专用信令发送的 CC分组信息, 同一 CC分组内的 CC共享一个定时提前量 TA值。
当 UE根据新配置的 CC的标识信息获知新配置的一个或多个 CC与当前 使用的 CC不属于相同的 CC分组,则在所述新配置的一个或多个 CC上执行 上行同步。 具体执行上行同步的过程可以采用基于竟争的随机接入过程。 该 基于竟争的随机接入过程可以为: UE 向基站发送随机接入 Preamble 消息 "Random Access Preamble" , 选择的 Preamble (共 64个) 暗示了后续 UE 需要发送的第一个调度的上行消息的大小; 然后, 基站在下行同步信道上下 发的随机接入响应消息 "Random Access Response" , 该消息由物理层产生。 其中,该消息中的 Timing Advance Command字段中包含的是 UE在上行发送 时需要调整的 TA值, UL Grant字段表示为 UE发送第一个调度的上行消息 分配的带宽资源的信息。 而 Temporary C-RNTI字段表示为 UE分配的一个临 时的标识信息。 MAC Header中的 RAPID则表示 UE发送的 preamble的标识 信息, 即: Random Access Pramble ID; 此外, 当基站为 UE新配置的 CC中, 有多个 CC需要 UE执行上行同步时,则需要进一步对现有的随机接入响应消 息做如下修改: 当 UE随机选择的一个 preamble同时在需要执行上行同步的多个 CC上 发送时, 则基站发送给 UE的随机接入响应消息中除上述需要携带的信息夕卜, 还需要携带多个 TA值分别对应的 CC的标识信息,以使得 UE在接收到随机 接入响应消息后能够明确获知需要调整的 TA值和 CC之间的对应关系。
当 UE随机选择多个 preamble并且在需要执行上行同步的多个 CC上分 别发送不同的 premable时, 则现有的随机接入响应消息不需要修改。
此外, 当 UE随机选择了 preamble之后, 为了明确让基站获知 UE选择 的 preamble, UE在当前正在使用的 CC上向基站发送所选择的 preamble的标 识信息,当基站在所述需要执行上行同步的 CC上检测到 UE报告的 preamble 时, 则基站可以基于该 preamble的检测而得到的 TA值使用上述随机接入响 应消息或者是本发明其他实施例中的扩展的 TA命令消息将 TA值发送给 UE。 在这种情况下, 因为基站已经基于 preamble识别出了 UE, 所以基站可以不 在随机接入响应消息为 UE分配用于发送上行消息的带宽资源, 同时也可以 省略向该 UE发送竟争解决消息。
UE根据随机接入响应消息 "Random Access Response" 的指示, 在上行 同步信道上发送第一个调度的上行消息; 最后, 基站为了解决多个 UE使用 了相同的 preamble时引发的冲突问题, 向 UE发送冲突解决消息。
较为优选地, 本实施例在新配置的一个或多个 CC上执行上行同步的过 程可以采用上述实施例一至五中任意实施例所描述的上行同步方法, 不再赘 述。
在本发明上行同步处理方法另一个实施例中 ,若新配置的一个或多个 CC 与当前使用的 CC属于相同的 CC分组,则在所述一个或多个 CC上使用当前 使用的 CC的 TA值。
本实施例在具有 CC分组的情况下,可以使 UE根据 CC分组信息以及新 配置的标识信息获知新配置的 CC是否属于某个 CC分组,在属于某个 CC分 组时, 直接使用该 CC分组对应的 TA实现上行同步, 在不属于某个 CC分组 时, 可以向基站发起上行同步操作, 从而从基站获取新配置的 CC上使用的 TA值。 因此, 本实施例在基站需要为 UE配置新的 CC, 或者 UE正在使用 的某个或者某些 CC需要被新配置的 CC替换掉时,可以使 UE现与新配置的 CC达到上行同步。
图 8为本发明上行同步处理方法实施例七的流程图, 如图 8所示, 本实 施例的方法可以包括:
步骤 501、 通过广播方式或者专用信令向用户设备 UE发送组成载波 CC 分组信息;
所述 CC分组信息用于指示在同一组内的 CC共享一个 TA值。
考虑多个 CC中, 可能有其中几个 CC可以共享一个 TA, 而另外的一些
CC可以共享另外一个 TA的情况。我们可以按照 CC是否可以共享同一个 TA, 将 CC进行分组。 为了使 UE能够预先获取 CC分组信息, 从而根据该分组信 息获知新配置的 CC是否是属于某个 CC分组。
步骤 502、 向 UE发送上行同步指示消息;
该上行同步指示消息可以为 CC 重配置消息或者物理下行控制信道
PDCCH。
所述上行同步指示消息中携带新配置的一个或多个 CC 的标识信息, 以 使所述 UE在根据所述 CC的标识信息获知新配置的一个或多个 CC与当前使 用的 CC不属于相同的 CC分组时,在所述新配置的一个或多个 CC上执行上 行同步。
所述上行同步指示消息中携带新配置的一个或多个 CC 的标识信息, 该 标识信息用于基站, 例如 eNodeB指示 UE新配置的是哪一个或哪几个 CC。 该 CC重配置消息中还可以携带新配置的 CC的详细配置信息。在本实施例中, 该上行同步指示消息可以作为独立的 RRC消息或者 MAC PDU发送,或者嵌 套在 RRC连接重配置消息中发送。
当 UE根据新配置的 CC的标识信息获知新配置的一个或多个 CC与当前 使用的 CC不属于相同的 CC分组,则在所述新配置的一个或多个 CC上执行 上行同步。 具体执行上行同步的过程可以采用基于竟争的随机接入过程。
较为优选地, 本实施例在新配置的一个或多个 CC上执行上行同步的过 程可以采用上述实施例一至五中任意实施例所描述的上行同步方法, 不再赘 述。
更进一步地, 在 UE执行基站之间的切换时, 目标基站在切换命令中会 为 UE分配多个 CC用于切换后使用。 当多个 CC不能共享同一 TA时, 则基 站可以在切换命令中将 CC分组信息通知 UE。
UE接收到切换命令后, 则基于切换命令中获取的多个 CC的分组信息, 从每个 CC组中选择一个 CC执行上行同步。或者基站也可以在切换命令中为 UE在每个 CC组中指定一个用于执行上行同步的 CC。
本实施例在具有 CC分组的情况下,可以使 UE根据 CC分组信息以及新 配置的标识信息获知新配置的 CC是否属于某个 CC分组,在属于某个 CC分 组时, 直接使用该 CC分组对应的 TA实现上行同步, 在不属于某个 CC分组 时, 可以向基站发起上行同步操作, 从而从基站获取新配置的 CC上使用的 TA值。 因此, 本实施例在基站需要为 UE配置新的 CC, 或者 UE正在使用 的某个或者某些 CC需要被新配置的 CC替换掉时,可以使 UE现与新配置的 CC达到上行同步。
图 9为本发明上行同步处理方法实施例八的流程图, 如图 9示, 本实施 例的方法可以包括:
步骤 601、 接收基站发送的上行同步指示消息;
所述上行同步指示消息中携带新配置的一个或多个组成载波 CC 的标识 信息以及在所述新配置的一个或多个 CC上发送探通参考信号的指示信息。
在本实施例中, 该探通参考信号可以为 Sounding RS。
在 LTE系统中, UE在与基站通信的过程中,需要发送 Sounding RS给基 站, 以保证基站能够实时地检测到 UE在整个上行带宽上的信号质量。 本实 施例, 可以在为 UE 重配置 CC 时, 指示 UE在新配置的 CC 上首先发送 Sounding RS, 然后基站可以基于对 Sounding RS的检测来确定 TA值。
步骤 602、根据所述指示信息在所述新配置的一个或多个 CC上向基站发 送探通参考信号;
步骤 603、接收所述基站根据所述探通参考信号发送的定时提前量 TA调 整消息,并将所述 TA调整消息中携带的 TA值应用在与所述标识信息对应的 CC上。
在本发明上行同步处理方法另一个实施例中, 上行同步指示消息包括:
CC重配置消息、物理下行控制信道 PDCCH或者媒体接入控制协议数据单元 MAC PDU, 所述 TA调整消息包括: 扩展的 TA值调整命令, 所述扩展的 TA 值调整命令包含在新配置的一个 CC上需要调整的 TA值, 或者所述扩展的 TA值调整命令包含在新配置的多个 CC上需要调整的一个或多个 TA值以及 与各个 TA值对应的 CC的标识信息。
该扩展的 TA调整命令可以采用上述实施例一至五中所述的扩展的 TA调 整命令, 不再赘述。
若所述上行同步指示消息为 PDCCH或者 MAC PDU,则所述 TA调整消 息为 CC重配置消息,所述 CC重配置消息包含在新配置的一个 CC上需要调 整的 TA值,或者所述 CC重配置消息包含在新配置的多个 CC上需要调整的 一个或多个 TA值以及与各个 TA值对应的 CC的标识信息。
本实施例中,基站通过向 UE发送携带使 UE发送 Sounding RS的指示信 息的上行同步指示消息, 使得 UE在接收该上行同步指示消息后, 即可向基 站发送 Sounding RS, 从而使得基站根据该 Sounding RS计算获取为 UE新配 置的 CC上使用的 TA值, 并将该 TA值发送给 UE。 因此, 本实施例在基站 需要为 UE配置新的 CC, 或者 UE正在使用的某个或者某些 CC需要被新配 置的 CC替换掉时, 可以使 UE现与新配置的 CC达到上行同步。
图 10为本发明上行同步处理方法实施例九的流程图, 如图 10所示, 本 实施例的方法可以包括:
步骤 701、 向用户设备 UE发送上行同步指示消息;
所述上行同步指示消息中携带新配置的一个或多个组成载波 CC 的标识 信息以及在所述新配置的一个或多个 CC上发送探通参考信号的指示信息。
在本实施例中, 该探通参考信号可以为 Sounding RS。
在 LTE系统中, UE在与基站通信的过程中,需要发送 Sounding RS给基 站, 以保证基站能够实时地检测到 UE在整个上行带宽上的信号质量。 本实 施例, 可以在为 UE 重配置 CC 时, 指示 UE在新配置的 CC 上首先发送 Sounding RS, 然后基站可以基于对 Sounding RS的检测来确定 TA值。
步骤 702、 接收所述 UE根据所述指示信息在所述新配置的一个或多个
CC上向基站发送探通参考信号;
步骤 703、根据所述探通参考信号向所述 UE发送的定时提前量 TA调整 消息,以使所述 UE将所述 TA调整消息中携带的 TA值应用在与所述标识信 息对应的 CC上。
在本发明上行同步处理方法另一个实施例中, 上行同步指示消息包括:
CC重配置消息、物理下行控制信道 PDCCH或者媒体接入控制协议数据单元 MAC PDU, 所述 TA调整消息包括: 扩展的 TA值调整命令, 所述扩展的 TA 值调整命令包含在新配置的一个 CC上需要调整的 TA值, 或者所述扩展的 TA值调整命令包含在新配置的多个 CC上需要调整的一个或多个 TA值以及 与各个 TA值对应的 CC的标识信息。
该扩展的 TA调整命令可以采用上述实施例一至五中所述的扩展的 TA调 整命令, 不再赘述。
若所述上行同步指示消息为 PDCCH或者 MAC PDU,则所述 TA调整消 息为 CC重配置消息,所述 CC重配置消息包含在新配置的一个 CC上需要调 整的 TA值,或者所述 CC重配置消息包含在新配置的多个 CC上需要调整的 一个或多个 TA值以及与各个 TA值对应的 CC的标识信息。 本实施例中 ,基站通过向 UE发送携带使 UE发送 Sounding RS的指示信 息的上行同步指示消息, 使得 UE在接收该上行同步指示消息后, 即可向基 站发送 Sounding RS, 从而使得基站根据该 Sounding RS计算获取为 UE新配 置的 CC上使用的 TA值, 并将该 TA值发送给 UE。 因此, 本实施例在基站 需要为 UE配置新的 CC, 或者 UE正在使用的某个或者某些 CC需要被新配 置的 CC替换掉时, 可以使 UE现与新配置的 CC达到上行同步。
在本发明上行同步处理方法另一个实施例中, UE只要接收到 CC重配置 消息或者 CC重配置消息中包含新配置的 CC, 则 UE就执行上行同步过程。 在本实施例中, 可以预先设置一组 reamble, 该组中的 preamble专用于 CC 重配置时使用; 或者, 在原有随机接入信道以外, 专用设置一种新的随机接 入信道用于 CC重配置时发送随机接入 preamble, 或者在 CC重配置时为 UE 调度专用于发送随机接入 Preamble的 PUSCH资源。 从而避免对传统的随机 接入过程的负面影响。本实施例的方法可以具体包括:基站向 UE发送 CC重 配置消息; UE在接收到 CC重配置消息后, 从专用于 CC重配置的 preamble 组中选择一个 preamble发送给基站, 或者, 如果系统没有专用于 CC重配置 的 preamble组, 而为 CC重配置设置了新的随机接入信道, 则 UE从当前可 用的 preamble中随机选择一个, 在新的专用于 CC重配置的随机接入信道上 发送该 preamble 给基站, 又或者, 如果系统没有为 CC 重配置设置专用的 preamble和新的随机接入信道,则基站在向 UE发送 CC重配置消息时,可以 在该 CC重配置消息中为 UE调度发送 preamble的 PUSCH资源, UE则随机 从当前可用的 preamble中选择一个,然后在 CC重配置消息中调度的 PUSCH 资源上发送所选择的 preamble;基站接收到 UE发送的 preamble后,发送 TA 调整命令给 UE。 该 TA调整命令中除了需要包含 TA值外, 还需要包含检测 到的 UE发送的 preamble的标识信息(该标识信息可以是专用 preamble组内 的标识信息, 或者是当前小区内所有 preamble的标识信息) , 可选地, 也可 以包含所述新配置的 CC的标识信息。该扩展的 TA调整命令可以采用上述实 施例一至五中所述的扩展的 TA调整命令, 不再赘述。
本实施例在基站需要为 UE配置新的 CC, 或者 UE正在使用的某个或者 某些 CC需要被新配置的 CC替换掉时, 可以使 UE现与新配置的 CC达到上 行同步。
图 11为本发明上行同步处理方法实施例十的流程图, 如图 11所示, 本 实施例的方法可以包括:
步骤 801、 获取正在使用的组成载波 CC或 CC对的下行定时值 T1和上 行定时提前量 TA1以及新配置的 CC或 CC对的下行定时值 T2;
步骤 802、应用公式 ( 2 )计算获取新配置的 CC的上行定时提前量 TA2,
ΤΑ2=ΤΑ1+2 ( T2 - T1 ) ( 2 ) 步骤 803、 将获取的 TA2应用在新配置的 CC上。
本实施例中, UE可以根据已经配置的 CC的 TA值, 自行调整新配置的 CC的 TA情况, 无论多个 CC是否共享 TA, UE均可以根据已经配置的 CC 的下行定时值和上行定时提前量, 以及新配置的 CC 的下行定时值, 计算出 新配置的 CC 的上行定时提前量。 可以理解, 本实施例可以与其它实施例的 方法互相结合, 以计算新配置的 CC的 TA值。 本实施例在基站需要为 UE配 置新的 CC, 或者 UE正在使用的某个或者某些 CC需要被新配置的 CC替换 掉时, 可以使 UE现与新配置的 CC达到上行同步。
上述所有实施例的技术方案以频分双工为例描述了 CC重配置时的 TA调 整, 对于时分双工的情况, 由于 CC不区分上行 CC还是下行 CC, 所以将上 述任一实施例所有涉及 CC的重配置直接替换为时分双工情况下的 CC重配置 时, 所有实施例中提到方法都是可用的。
需要特别说明的是, 在本发明各个涉及使用专用的 preamble进行上行同 步的实施例中, 可以用以下方法替代专用 preamble的使用, 并且具体过程如 下:
当 UE获知需要在新配置的一个或多个 CC上需要执行上行同步时, 则 UE随机选择一个或多个 preamble, 并在一个或多个需要执行上行同步的 CC 上发送所选 preamble给基站, 为了明确让基站获知 UE选择的 preamble, 在 UE发送这些 preamble之前或者是发送的过程中, UE在当前正在使用的 CC 上向基站报告所选择的 preamble的标识信息, UE可以使用下列方式中的任 何一种向基站 告所选择的 preamble的 index:
1 ) RRC信令; 2 ) MAC控制 PDU; 3 )物理层信令; 4 )将选择的 Preamble 的标识信息嵌套在上行的用户面数据包中。
当基站在所述需要执行上行同步的 CC上检测到 UE报告的 preamble时, 则基站可以基于该 preamble的检测而得到的 TA值使用现有的随机接入响应 消息发送给 UE, 但是当 UE在多个 CC上发送了同一 preamble的情况下, 需 要在随机接入响应消息中指示多个 TA值, 同时需要指示多个 TA值对应的 CC的标识信息, 即让 UE明确获知 TA值和 CC之间的对应关系。 或者, 基 令消息或者 CC重配置消息发送给 UE。
此外, 对于频分双工系统, 如果基站单独为 UE新配置了一个上行 CC, 而没有为该 UE配置与所述上行 CC对应的下行 CC,则 UE无法获取所述 T2 值, 在这种情况下, UE可以在所述上行 CC上发起上行同步操作, 即可以在 所述上行 CC上执行随机接入过程, 或者是按照本发明其他实施例的方法执 行上行同步操作。
图 12为本发明用户设备实施例一的结构示意图, 如图 12所示, 本实施 例的 UE可以包括: 第一接收模块 11、 第一发送模块 12以及第一处理模块 13 , 其中第一接收模块 11用于用于接收基站发送的上行同步指示消息, 上行 同步指示消息中携带新配置的一个或多个组成载波 CC 的标识信息; 第一发 送模块 12用于在获知与所述标识信息对应的新配置的一个 CC、 或多个 CC 中的全部或部分 CC需要执行上行同步时, 将同步信令发送给基站; 第一处 理模块 13 用于在第一接收模块接收所述基站根据所述同步信令发送的定时 提前量 TA调整消息之后,将所述 TA调整消息中携带的 TA值应用在需要执 行上行同步的 CC上。
本实施例的 UE与图 1所示的上行同步处理方法实施例一的实现原理相 同, 不再赘述。
在本发明 UE另一个实施例中, 若所述第一接收模块接收的上行同步指 示消息为 CC重配置消息, 则所述第一接收模块还用于接收所述基站根据所 述同步信令发送的扩展的 TA值调整命令,所述扩展的 TA值调整命令包含在 新配置的一个 CC上需要调整的 TA值,或者所述扩展的 TA值调整命令包含 在新配置的多个 CC上需要调整的一个或多个 TA值、以及与各个 TA值对应 的 CC的标识信息。
本实施例的 UE与图 3所示的上行同步处理方法实施例三的实现原理相 同, 不再赘述。
在本发明 UE再一个实施例中, 若所述第一接收模块接收的上行同步指 示消息为物理上行控制信道 PDCCH,则所述第一接收模块还用于接收所述基 站根据所述同步信令发送的扩展的 TA值调整命令,并接收基站发送的 CC重 配置消息。
本实施例的 UE与图 5所示的上行同步处理方法实施例四的实现原理相 同, 不再赘述。
在本发明 UE还一个实施例中, 若所述第一接收模块接收的上行同步指 示消息为物理上行控制信道 PDCCH,所述第一接收模块还用于接收所述基站 根据所述同步信令发送的 CC重配置消息,所述 CC重配置消息包含在新配置 的一个 CC上需要调整的 TA值,或者所述 CC重配置消息包含在新配置的多 个 CC上需要调整的一个或多个 TA值、 以及与各个 TA值对应的 CC的标识 信息。
本实施例的 UE与图 6所示的上行同步处理方法实施例五的实现原理相 同, 不再赘述。 在上述 UE的实施例中, 在根据所述上行同步指示消息获知在新配置的 一个 CC或多个 CC中的全部或部分 CC上不需要执行上行同步时,所述第一 处理模块还用于将所述上行同步指示消息中指示的 TA值应用到新配置的不 需要执行上行同步的 CC上。
上述实施例的 UE在基站需要为 UE配置新的 CC, 或者 UE正在使用的 某个或者某些 CC需要被新配置的 CC替换掉时, UE可以使用该获取的 TA 值与新配置的 CC达到上行同步, 而且, 在该过程仅通过上行同步指示消息, 例如 CC重配置消息或者 PDCCH触发 UE执行上行同步,从而节约了下行无 线资源, 在 UE需要执行上行同步时, 可以通过向基站发送同步信令, 例如 专用 preamble, 即可从基站获取新配置的 CC上需要使用的 TA值,从而提高 了上行同步速度。 当 UE根据接收的上行同步指示消息获知不需要执行上行 同步时, 即可直接将该上行同步指示消息中指示的 TA值应用在新配置的 CC 中不需要执行上行同步的 CC, 或者直接将当前正在使用的 CC的唯一的 TA 值应用在新配置的不需要执行上行同步的 CC上,从而使得 UE在不需要执行 上行同步时也可以与新配置的 CC达到上行同步。
图 13为本发明基站实施例一的结构示意图, 如图 13所示, 本实施例的 基站可以包括: 第二发送模块 21和第二接收模块 22, 其中第二发送模块 21 用于向用户设备 UE发送上行同步指示消息, 所述上行同步指示消息中携带 新配置的一个或多个组成载波 CC的标识信息; 第二接收模块 22用于用于接 收所述 UE发送的同步信令; 第二发送模块 21还用于根据所述同步信令向所 述 UE发送定时提前量 TA调整消息, 以指示所述 UE将所述 TA调整消息中 携带的 TA值应用在需要执行上行同步的 CC上。
本实施例的基站与图 2所示的上行同步处理方法实施例一的实现原理相 同, 不再赘述。
在本发明基站另一个实施例中, 若所述第二发送模块向 UE发送的上行 同步指示消息为 CC重配置消息,则所述第二发送模块还用于向所述 UE发送 扩展的 TA值调整命令,所述扩展的 TA值调整命令包含 UE在新配置的一个 CC上需要调整的 TA值, 或者所述扩展的 TA值调整命令包含 UE在新配置 的多个 CC上需要调整的一个或多个 TA值、 以及与各个 TA值对应的 CC的 标识信息。
本实施例的基站与图 3所示的上行同步处理方法实施例三的实现原理相 同, 不再赘述。
在本发明基站再一个实施例中, 若所述第二发送模块向 UE发送的上行 同步指示消息为 PDCCH, 则所述第二发送模块还用于向所述 UE发送扩展的 TA值调整命令和 CC重配置消息。
本实施例的基站与图 5所示的上行同步处理方法实施例四的实现原理相 同, 不再赘述。
在本发明基站还一个实施例中, 若所述第二发送模块向 UE发送的上行 同步指示消息为物理上行控制信道 PDCCH,则所述第二发送模块还用于向所 述 UE发送扩展的 TA值调整命令和 CC重配置消息; 或者, 所述第二发送模 块还用于向所述 UE发送 CC重配置消息, 所述 CC重配置消息包含 UE在新 配置的一个 CC上需要调整的 TA值, 或者所述 CC重配置消息包含 UE在新 配置的多个 CC上需要调整的一个或多个 TA值、 以及与各个 TA值对应的 CC的标识信息。
本实施例的基站与图 6所示的上行同步处理方法实施例五的实现原理相 同, 不再赘述。
在上述基站的实施例中, 基站可以向 UE发送上行同步指示消息, 从而 在为 UE配置新的 CC, 或者应用新配置的 CC替换 UE正在使用的某个或者 某些 CC 时, 可以根据该上行同步指示消息获知是否需要执行上行同步, 从 而使得 UE与新配置的 CC达到上行同步, 而且,在该过程仅通过上行同步指 示消息触发 UE执行上行同步,从而节约了下行无线资源,在 UE需要执行上 行同步时, 可以通过向基站发送同步信令, 例如专用 preamble, 即可从基站 获取新配置的 CC上需要使用的 TA值, 从而提高了上行同步速度。 当 UE根 据接收的上行同步指示消息获知不需要执行上行同步时, 即可直接将该上行 同步指示消息中指示的 TA值应用在新配置的 CC 中不需要执行上行同步的 CC, 或者直接将当前正在使用的 CC的唯一的 TA值应用在新配置的不需要 执行上行同步的 CC上,从而使得 UE在不需要执行上行同步时也可以与新配 置的 CC达到上行同步。
图 14为本发明用户设备实施例二的结构示意图, 如图 14所示, 本实施 例的 UE可以包括: 第三接收模块 31和第三处理模块 32 , 其中, 第三接收模 块 31用于接收基站发送的上行同步指示消息,所述上行同步指示消息中携带 新配置的一个或多个组成载波 CC的标识信息; 第三处理模块 32用于在根据 所述 CC的标识信息获知新配置的一个或多个 CC与当前使用的 CC不属于相 同的 CC分组时, 在所述新配置的一个或多个 CC上执行上行同步, 其中, 所 述 CC分组是共享同一 TA值的一个或多个 CC组成的 CC组。
进一步地, 第三接收模块 31在接收基站发送的上行同步指示消息之前, 还用于接收基站通过广播方式或者专用信令发送的 CC分组信息,所述 CC分 组信息用于指示同一 CC分组内的 CC共享一个 TA值。
本实施例的 UE与图 7所示的上行同步处理方法实施例六的实现原理相 同, 不再赘述。
本实施例的 UE, 在具有 CC分组的情况下, 可以 UE根据 CC分组信息 以及新配置的标识信息获知新配置的 CC是否属于某个 CC分组,在属于某个 CC分组时,直接使用该 CC分组对应的 TA实现上行同步,在不属于某个 CC 分组时, 可以向基站发起上行同步操作, 从而从基站获取新配置的 CC上使 用的 TA值。 因此, 在基站需要为 UE配置新的 CC, 或者 UE正在使用的某 个或者某些 CC需要被新配置的 CC替换掉时, 可以使 UE现与新配置的 CC 达到上行同步。
图 15为本发明基站实施例二的结构示意图, 如图 15所示, 本实施例的 基站可以包括: 第三发送模块 41和第四发送模块 42, 其中, 第三发送模块 41用于通过广播方式或者专用信令向用户设备 UE发送组成载波 CC分组信 息, 所述 CC分组信息用于指示在同一组内的 CC共享一个 TA值; 第四发送 模块 42用于向 UE发送上行同步指示消息, 所述上行同步指示消息中携带新 配置的一个或多个 CC的标识信息,以使所述 UE在根据所述 CC的标识信息 获知新配置的一个或多个 CC与当前使用的 CC不属于相同的 CC分组时,在 所述新配置的一个或多个 CC上执行上行同步。
本实施例的基站与图 8所示的上行同步处理方法实施例七的实现原理相 同, 不再赘述。
本实施例的基站, 在具有 CC分组的情况下, 可以使 UE根据 CC分组信 息以及新配置的标识信息获知新配置的 CC是否属于某个 CC分组,从而使得 UE在属于某个 CC分组时, 直接使用该 CC分组对应的 TA实现上行同步, 在不属于某个 CC分组时, 可以向基站发起上行同步操作, 从而从基站获取 新配置的 CC上使用的 TA值。 因此, 本实施例的基站在需要为 UE配置新的 CC, 或者 UE正在使用的某个或者某些 CC需要被新配置的 CC替换掉时, 可以使 UE现与新配置的 CC达到上行同步。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案而非对其进 行限制, 尽管参照较佳实施例对本发明进行了详细的说明, 本领域的普通技 术人员应当理解: 其依然可以对本发明的技术方案进行修改或者等同替换, 而这些修改或者等同替换亦不能使修改后的技术方案脱离本发明技术方案的 4青神和范围。

Claims

权 利 要 求
1、 一种上行同步处理方法, 其特征在于, 包括:
接收基站发送的上行同步指示消息, 所述上行同步指示消息中携带新配 置的一个或多个组成载波 CC的标识信息;
在获知与所述标识信息对应的新配置的一个 CC、 或多个 CC中的全部或 部分 CC需要执行上行同步时, 将同步信令发送给基站; 以及
接收所述基站根据所述同步信令发送的定时提前量 TA调整消息, 并将 所述 TA调整消息中携带的 TA值应用在需要执行上行同步的 CC上。
2、 根据权利要求 1所述的上行同步处理方法, 其特征在于, 所述上行同 步指示消息为 CC重配置消息, 则所述接收所述基站根据所述同步信令发送 的 TA调整消息, 包括:
接收所述基站根据所述同步信令发送的扩展的 TA值调整命令, 所述扩 展的 TA值调整命令包含在新配置的一个 CC上需要调整的 TA值, 或者, 所 述扩展的 TA值调整命令包含在新配置的多个 CC上需要调整的一个或多个 TA值、 以及与各个 TA值对应的 CC的标识信息。
3、 根据权利要求 1所述的上行同步处理方法, 其特征在于, 若所述上行 同步指示消息为物理上行控制信道 PDCCH, 贝' J
所述接收所述基站根据所述同步信令发送的 TA调整消息包括: 接收所 述基站根据所述同步信令发送的扩展的 TA值调整命令;
或者
所述接收所述基站根据所述同步信令发送的 TA调整消息, 包括: 接收 所述基站根据所述同步信令发送的 CC重配置消息,所述 CC重配置消息包含 在新配置的一个 CC上需要调整的 TA值, 或者, 所述 CC重配置消息包含在 新配置的多个 CC上需要调整的一个或多个 TA值、以及与各个 TA值对应的 CC的标识信息。
4、 根据权利要求 1所述的上行同步处理方法, 其特征在于, 所述上行同 步指示消息作为无线资源控制 RRC 消息或者媒体接入控制协议数据单元 MAC PDU发送, 或者嵌套在 RRC连接重配置消息中发送。
5、 根据权利要求 1所述的上行同步处理方法, 其特征在于, 所述上行同 步指示消息包含物理上行共享信道 PUSCH 资源的信息、 以及开始使用该 PUSCH资源的帧信息,所述 PUSCH资源用于向所述基站发送所述同步信令。
6、 根据权利要求 1〜5中任一权利要求所述的上行同步处理方法, 其特征 在于, 所述同步信令包括:
专用前导码或探通参考信号。
7、 根据权利要求 1〜5中任一权利要求所述的上行同步处理方法, 其特征 在于, 所述获知与所述标识信息对应的新配置的一个 CC、 或多个 CC中的全 部或部分 CC需要执行上行同步, 包括:
根据所述上行同步指示消息中用于指示是否在新配置的一个 CC 或多个 CC中的全部或部分 CC上执行上行同步的比特指示信息获知需要在新配置的 一个 CC或多个 CC中的全部或部分 CC上执行上行同步; 或者
根据所述上行同步指示消息中包含同步信令的分配信息获知需要在新配 置的一个 CC或多个 CC中的全部或部分 CC上执行上行同步。
8、 根据权利要求 1〜5中任一权利要求所述的上行同步处理方法, 其特征 在于, 还包括:
在根据所述上行同步指示消息获知在新配置的一个 CC或多个 CC中的全 部或部分 CC上不需要执行上行同步时, 将所述上行同步指示消息中指示的 TA值应用到新配置的不需要执行上行同步的 CC上; 或者
在根据所述上行同步指示消息获知在新配置的一个 CC或多个 CC中的全 部或部分 CC上不需要执行上行同步时, 将当前正在使用的 CC上唯一的 TA 值应用在新配置的一个或多个 CC中不需要执行上行同步的全部或部分 CC。
9、 根据权利要求 8所述的上行同步处理方法, 其特征在于, 所述根据所 述上行同步指示消息获知在新配置的一个 CC或多个 CC中的全部或部分 CC 上不需要执行上行同步, 包括:
当新配置的一个 CC与当前使用的一个或多个 CC中任意一个 CC的 TA 值相同时, 所述指示的 TA值包括: 新配置的一个 CC上需要调整的 TA值, 或者当前正在使用的 CC的标识信息, 所述 CC的标识信息表示新配置的 CC 上需要使用的 TA值与所述 CC的标识信息对应的 CC的 TA值相同;
当新配置的多个 CC与当前使用的 CC的 TA值相同时, 所述指示的 TA 值包括: 与多个新配置的 CC分别对应的 TA值、 与多个新配置的 CC分别对 应的 TA值的编号, 或者当前使用的 CC的编号, 新配置的 CC所需使用的 TA值与所述 CC的编号对应的 CC的 TA值相同。
10、 根据权利要求 1〜5 中任一权利要求所述的上行同步处理方法, 其特 征在于,所述将所述 TA调整消息中携带的 TA值应用在需要执行上行同步的 CC上, 包括:
应用公式 ( 1 )计算获取需要执行上行同步的 CC上所需使用的 TA , 并 将该 应用在所述需要执行上行同步的 CC上,
TA = TA f + (TA - M) x Ts ( 1 ) 其中, 7¾ 表示当前正在使用的 CC上的 TA值、 基站在所述上行同 步指示消息中发送的参考值或者是在第一次建立 RRC连接时的 CC上的 TA 值, 或者是主载波上的 TA值; M为预设经验值; 7; = 1 /(15000 x 2048)。
1 1、 一种上行同步处理方法, 其特征在于, 包括:
向用户设备 UE发送上行同步指示消息, 所述上行同步指示消息中携带 新配置的一个或多个组成载波 CC的标识信息;
接收所述 UE发送的同步信令;
根据所述同步信令向所述 UE发送定时提前量 TA调整消息,以指示所述 UE将所述 TA调整消息中携带的 TA值应用在需要执行上行同步的 CC上。
12、 根据权利要求 1 1所述的上行同步处理方法, 其特征在于, 若向所述 UE发送的上行同步指示消息为 CC重配置消息, 则所述向所述 UE发送 TA 调整消息, 包括:
向所述 UE发送扩展的 TA值调整命令,所述扩展的 TA值调整命令包含 UE在新配置的一个 CC上需要调整的 TA值, 或者所述扩展的 TA值调整命 令包含 UE在新配置的多个 CC上需要调整的一个或多个 TA值、以及与各个 TA值对应的 CC的标识信息。
13、 根据权利要求 11所述的上行同步处理方法, 其特征在于, 若向所述 UE发送的上行同步指示消息为物理上行控制信道 PDCCH, 贝' J
所述向所述 UE发送 TA调整消息, 包括: 向所述 UE发送扩展的 TA值 调整命令;
或者
所述向所述 UE发送 TA调整消息, 包括: 向所述 UE发送 CC重配置消 息, 所述 CC重配置消息包含 UE在新配置的一个 CC上需要调整的 TA值, 或者所述 CC重配置消息包含 UE在新配置的多个 CC上需要调整的一个或多 个 TA值、 以及与各个 TA值对应的 CC的标识信息。
14、 根据权利要求 11〜13 中任一权利要求所述的上行同步处理方法, 其 特征在于, 所述向 UE发送上行同步指示消息, 包括:
向所述 UE发送上行同步指示消息, 所述上行同步指示消息中的比特指 示信息用于指示需要在新配置的一个 CC或多个 CC中的全部或部分 CC上执 行上行同步, 或者向所述 UE发送上行同步指示消息, 所述上行同步指示消 息中的同步信令的分配信息用于表示在新配置的一个 CC或多个 CC中的全部 或部分 CC上需要执行上行同步;
或者
向所述 UE发送携带 TA值指示信息的上行同步指示消息,当新配置的一 个 CC与当前使用的一个或多个 CC中任意一个 CC的 TA值相同时, 所述指 示的 TA值包括: 新配置的一个 CC上需要调整的 TA值, 或者当前正在使用 的 CC的标识信息, 所述 CC的标识信息表示新配置的 CC上需要使用的 TA 值与所述 CC的标识信息对应的 CC的 TA值相同, 当新配置的多个 CC与当 前使用的 CC的 TA值相同时, 所述指示的 TA值包括: 与多个新配置的 CC 分别对应的 TA值、 与多个新配置的 CC分别对应的 TA值的编号, 或者当前 使用的 CC的编号, 新配置的 CC所需使用的 TA值与所述 CC的编号对应的 CC的 TA值相同。
15、 一种上行同步处理方法, 其特征在于, 包括:
接收基站发送的上行同步指示消息, 所述上行同步指示消息中携带新配 置的一个或多个组成载波 CC的标识信息;
若根据所述 CC的标识信息获知新配置的一个或多个 CC与当前使用的
CC不属于相同的 CC分组, 则在所述新配置的一个或多个 CC上执行上行同 步, 其中, 所述 CC分组是共享同一定时提前量 TA值的一个或多个 CC组成 的 CC组。
16、 根据权利要求 15所述的上行同步处理方法, 其特征在于, 还包括: 接收基站通过广播方式或者专用信令发送的 CC分组信息,所述 CC分组 信息用于指示同一 CC分组内的 CC共享一个 TA值。
17、 根据权利要求 15所述的上行同步处理方法, 其特征在于, 若新配置 的一个或多个 CC与当前使用的 CC属于相同的 CC分组,则在所述一个或多 个 CC上使用当前使用的 CC的 TA值。
18、 根据权利要求 15〜17中任一权利要求所述的上行同步处理方法, 其 特征在于, 所述上行同步指示消息包括:
CC重配置消息或物理上行控制信道 PDCCH。
19、 一种上行同步处理方法, 其特征在于, 包括:
通过广播方式或者专用信令向所述 UE发送 CC分组信息,所述 CC分组 信息用于指示同一 CC分组内的 CC共享一个定时提前量 TA值;
向用户设备 UE发送上行同步指示消息, 所述上行同步指示消息中携带 新配置的一个或多个 CC的标识信息,以使所述 UE在根据所述 CC的标识信 息获知新配置的一个或多个 CC与当前使用的 CC不属于相同的 CC分组时, 在所述新配置的一个或多个 CC上执行上行同步。
20、 一种上行同步处理方法, 其特征在于, 包括:
获取正在使用的组成载波 CC或 CC对的下行定时值 Tl、 上行定时提前 量 TA1、 以及新配置的 CC或 CC对的下行定时值 Τ2;
应用公式 ( 2 )计算获取新配置的 CC的上行定时提前量 ΤΑ2,
TA 2=ΤΑ1+2 ( T2 - T1 ) ( 2 ) ; 将获取的 ΤΑ2应用在新配置的 CC上。
21、 一种用户设备, 其特征在于, 包括:
第一接收模块, 用于接收基站发送的上行同步指示消息, 上行同步指示 消息中携带新配置的一个或多个组成载波 CC的标识信息;
第一发送模块, 用于在获知与所述标识信息对应的新配置的一个 cc、 或 多个 CC中的全部或部分 CC需要执行上行同步时, 将同步信令发送给基站; 第一处理模块, 用于在第一接收模块接收所述基站根据所述同步信令发 送的定时提前量 TA调整消息之后,将所述 TA调整消息中携带的 TA值应用 在需要执行上行同步的 CC上。
22、 根据权利要求 21所述的用户设备, 其特征在于, 若所述第一接收模 块接收的上行同步指示消息为 CC重配置消息, 则所述第一接收模块还用于 接收所述基站根据所述同步信令发送的扩展的 TA值调整命令, 所述扩展的
TA值调整命令包含在新配置的一个 CC上需要调整的 TA值, 或者所述扩展 的 TA值调整命令包含在新配置的多个 CC上需要调整的一个或多个 TA值、 以及与各个 TA值对应的 CC的标识信息;
若所述第一接收模块接收的上行同步指示消息为物理上行控制信道 PDCCH, 则所述第一接收模块还用于接收所述基站根据所述同步信令发送的 扩展的 TA值调整命令, 并接收基站发送的 CC重配置消息; 或者, 所述第一 接收模块还用于接收所述基站根据所述同步信令发送的 CC重配置消息, 所 述 CC重配置消息包含在新配置的一个 CC上需要调整的 TA值, 或者所述 CC重配置消息包含在新配置的多个 CC上需要调整的一个或多个 TA值、 以 及与各个 TA值对应的 CC的标识信息。
23、 一种基站, 其特征在于, 包括:
第二发送模块, 用于向用户设备 UE发送上行同步指示消息, 所述上行 同步指示消息中携带新配置的一个或多个组成载波 CC的标识信息;
第二接收模块, 用于接收所述 UE发送的同步信令;
所述第二发送模块还用于根据所述同步信令向所述 UE发送定时提前量 TA调整消息, 以指示所述 UE将所述 TA调整消息中携带的 TA值应用在需 要执行上行同步的 CC上。
24、 根据权利要求 23所述的基站, 其特征在于, 若所述第二发送模块向 UE发送的上行同步指示消息为 CC重配置消息, 则所述第二发送模块还用于 向所述 UE发送扩展的 TA值调整命令, 所述扩展的 TA值调整命令包含 UE 在新配置的一个 CC上需要调整的 TA值,或者所述扩展的 TA值调整命令包 含 UE在新配置的多个 CC上需要调整的一个或多个 TA值、 以及与各个 TA 值对应的 CC的标识信息;
若所述第二发送模块向 UE发送的上行同步指示消息为物理上行控制信 道 PDCCH, 则所述第二发送模块还用于向所述 UE发送扩展的 TA值调整命 令和 CC重配置消息; 或者, 所述第二发送模块还用于向所述 UE发送 CC重 配置消息, 所述 CC重配置消息包含 UE在新配置的一个 CC上需要调整的 TA值, 或者所述 CC重配置消息包含 UE在新配置的多个 CC上需要调整的 一个或多个 TA值、 以及与各个 TA值对应的 CC的标识信息。
25、 一种用户设备, 其特征在于, 包括:
第三接收模块, 用于接收基站发送的上行同步指示消息, 所述上行同步 指示消息中携带新配置的一个或多个组成载波 CC的标识信息; 第三处理模块, 用于在根据所述 CC 的标识信息获知新配置的一个或多 个 CC与当前使用的 CC不属于相同的 CC分组时,在所述新配置的一个或多 个 CC上执行上行同步, 其中, 所述 CC分组是共享同一 TA值的一个或多个 CC组成的 CC组。
26、 根据权利要求 25所述的用户设备, 其特征在于, 所述第三接收模块 还用于接收基站通过广播方式或者专用信令发送的 CC分组信息,所述 CC分 组信息用于指示同一 CC分组内的 CC共享一个 TA值;
或者, 所述第三处理模块还用于在新配置的一个或多个 CC 与当前使用 的 CC属于相同的 CC分组时, 在所述一个或多个 CC上使用当前使用的 CC 的 TA值。
27、 一种基站, 其特征在于, 包括:
第三发送模块,用于通过广播方式或者专用信令向所述 UE发送 CC分组 信息,所述 CC分组信息用于指示同一 CC分组内的 CC共享一个定时提前量 TA值;
第四发送模块, 用于向 UE发送上行同步指示消息, 所述上行同步指示 消息中携带新配置的一个或多个 CC的标识信息, 以使所述 UE在根据所述 CC的标识信息获知新配置的一个或多个 CC与当前使用的 CC不属于相同的 CC分组时, 在所述新配置的一个或多个 CC上执行上行同步。
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US20170332337A1 (en) 2017-11-16
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US20140105169A1 (en) 2014-04-17
US9220077B2 (en) 2015-12-22
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US20150351062A1 (en) 2015-12-03
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US10536912B2 (en) 2020-01-14
US20140219271A1 (en) 2014-08-07

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