WO2011124018A1 - 基于载波聚合的处理物理随机接入信道传输的方法和装置 - Google Patents

基于载波聚合的处理物理随机接入信道传输的方法和装置 Download PDF

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Publication number
WO2011124018A1
WO2011124018A1 PCT/CN2010/071580 CN2010071580W WO2011124018A1 WO 2011124018 A1 WO2011124018 A1 WO 2011124018A1 CN 2010071580 W CN2010071580 W CN 2010071580W WO 2011124018 A1 WO2011124018 A1 WO 2011124018A1
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WIPO (PCT)
Prior art keywords
uplink component
component carrier
random access
component carriers
request
Prior art date
Application number
PCT/CN2010/071580
Other languages
English (en)
French (fr)
Inventor
杨涛
利姆·苏西安
Original Assignee
上海贝尔股份有限公司
阿尔卡特朗讯
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海贝尔股份有限公司, 阿尔卡特朗讯 filed Critical 上海贝尔股份有限公司
Priority to PCT/CN2010/071580 priority Critical patent/WO2011124018A1/zh
Priority to CN201080065750.7A priority patent/CN102845119B/zh
Priority to TW100110619A priority patent/TWI479928B/zh
Publication of WO2011124018A1 publication Critical patent/WO2011124018A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • H04W74/004Transmission of channel access control information in the uplink, i.e. towards network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access

Definitions

  • the present invention relates to information transmission on a physical random access channel of a wireless network, and more particularly to a user terminal of a wireless network selecting an uplink component carrier for transmitting information on a physical random access channel (PRACH) among a plurality of uplink component carriers.
  • PRACH physical random access channel
  • a user terminal In a Long Term Evolution (LTE) system, a user terminal is generally configured with a carrier having a bandwidth of no more than 20 MHz. Since there is only one carrier, the user terminal does not involve the problem of carrier selection when transmitting information on the physical random access channel.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • the maximum bandwidth after aggregation can reach 100MHz.
  • the 100 MHz bandwidth is divided into five component carriers (CCs) with a maximum bandwidth of 20 MHz, and each of the component carriers should be configurable to be backward compatible with LTE.
  • Carrier For a user terminal, it can be configured with 1 to 5 component carriers. As a result, not only does the available bandwidth grow exponentially compared to the previous one, but the evolved Node B (hereinafter referred to as the base station) also has greater flexibility in scheduling the uplink data transmission of the user terminal.
  • the solution provided by the present invention may be advantageous for a user terminal configured with multiple uplink component carriers to select an uplink component carrier for performing transmission on a physical random access channel.
  • a method for use in a user terminal. And a method for transmitting a random access request sent on a physical random access channel, where the user terminal is configured with multiple uplink component carriers with a physical random access channel, and the method includes the following steps: b.
  • One of the following operations determining one uplink component carrier among the plurality of uplink component carriers, - randomly determining one uplink component carrier from the plurality of uplink component carriers; - from the plurality of uplink components An uplink component carrier having an active paired activated paired downlink component carrier having better channel conditions in the carrier; - determining, from the plurality of uplink component carriers, an uplink component capable of transmitting on the physical random access channel earlier a carrier; - determining an uplink component carrier as a primary uplink component carrier; c transmitting the random access request to the management device on the determined physical random channel carried by the uplink component carrier.
  • a method for transmitting a random access request after a scheduling request transmission failure in a user terminal comprising the primary uplink component carrier Multiple uplink component carriers with physical random access channels, the method comprising the following steps: A. performing any one of the following to determine one uplink component carrier from the plurality of uplink component carriers; Determining, from the plurality of uplink component carriers, each of the uplink component carriers except the main uplink component carrier, that the transmission on the physical random access channel can be performed earlier and/or the downlink component carrier corresponding to one channel condition is better An uplink component carrier; - randomly determining an uplink component carrier from each of the plurality of uplink component carriers except the main uplink component carrier; B. physically randomizing the determined uplink component carrier The channel is sent to send the random access request.
  • a method for switching from being governed by a jurisdiction of a first management device to being governed by a second management device in a user terminal comprising the steps of: a handover command sent by the second management device, where the information about the uplink component carrier with the physical random access channel is included; m. according to the handover command and a predetermined rule, from the multiple uplink component carriers Determining an uplink component carrier; n. performing the handover by the determined uplink component carrier; if the handover performed in the step 0 is not successful, repeating the step mo until the handover succeeds or a predetermined condition is met.
  • a method for controlling an uplink physical channel carried by a plurality of uplink component carriers configured for a user terminal in a management device includes the following steps: Whether the user terminal requests a message on a physical random access channel carried by another uplink component carrier other than the primary uplink component carrier and causes the request to succeed; if the user terminal is carried by another uplink component carrier other than the primary uplink component carrier The request message is sent on the physical random access channel and the request is successful, and the other uplink component is determined as the primary uplink component carrier of the user terminal.
  • a first apparatus for transmitting a random access request on a physical random access channel in a user terminal wherein the user terminal is configured with multiple An uplink component carrier of the physical random access channel
  • the first device includes: a second unit, configured to perform one of: determining an uplink component carrier in the multiple uplink component carriers, Determining one uplink component carrier randomly among the plurality of uplink component carriers; - selecting one uplink component carrier of the paired downlink component carrier having the channel condition better from the plurality of uplink component carriers; - from the plurality of uplinks Determining, in the component carrier, an uplink component carrier capable of transmitting on the physical random access channel earlier; determining an uplink component carrier as the primary uplink component carrier; and determining, by the first transmitter, the second component Sending the random access request to the management device on a physical random channel carried by the uplink component carrier.
  • a second apparatus for transmitting a random access request after a scheduling request transmission failure in a user terminal where the user terminal is configured to include the primary uplink component carrier a plurality of uplink component carriers with a physical random access channel
  • the second device includes: a third unit, configured to perform any one of the following, to determine from the multiple uplink component carriers An uplink component carrier; determining, from each of the plurality of uplink component carriers, each of the uplink component carriers other than the primary uplink component carrier, capable of transmitting on the physical random access channel and/or corresponding to a channel condition An uplink component carrier of the preferred downlink component carrier; - randomly determining an uplink component carrier from each of the plurality of uplink component carriers except the primary uplink component carrier; and a second transmitter for transmitting The physical random access channel carried by the determined uplink component carrier transmits the random access request.
  • a third apparatus for switching from being governed by a first management device to being managed by a second management device in a user terminal comprising: a receiver, configured to: Receiving, by the second management device, a handover command, where the information about the uplink component carrier with the physical random access channel is included, and the fourth unit is configured to perform, according to the handover command, the multiple uplinks Determining an uplink component carrier in the component carrier; a fifth unit, configured to perform the handover by using the determined uplink component carrier; wherein, if the handover performed by the fifth unit is not successful, the fourth, fifth The unit will repeat the corresponding operation until the handover is successful or the predetermined condition is met.
  • a fourth apparatus for controlling an uplink physical channel carried by a plurality of uplink component carriers configured for a user terminal in a management device includes: a determining device, Determining whether the user terminal sends a request message on a physical random access channel carried by another uplink component carrier other than the primary uplink component carrier, and causes the request to succeed; the sixth unit is configured to: if the user terminal is in the main And transmitting a request message on a physical random access channel carried by another uplink component carrier other than the uplink component carrier, and causing the request to be successful, determining the another uplink component as the primary uplink component carrier of the user terminal.
  • a user terminal can select an appropriate uplink component carrier for information on a physical random access channel (PRACH) under carrier aggregation conditions, thereby optimizing a random access procedure, a handover procedure, and a resource request. process.
  • PRACH physical random access channel
  • FIG. 2 is a flow chart of a method for transmitting a random access request on a physical random access channel in a user terminal according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for transmitting a random access request after a scheduling request fails in a user terminal according to an embodiment of the present invention
  • FIG. 4 is a diagram for use in a user terminal in accordance with an embodiment of the present invention A flow chart of a method for controlling the jurisdiction of a first management device to be governed by a second management device;
  • FIG. 5 is a block diagram of a first apparatus for transmitting a random access request on a physical random access channel in a user terminal, in accordance with an embodiment of the present invention
  • FIG. 6 is a block diagram of a second apparatus for transmitting a random access request after a failure of a scheduling request failure scheduling request is sent in a user terminal according to an embodiment of the present invention
  • Figure 7 is a block diagram of a third device for switching from the jurisdiction of a first management device to the jurisdiction of a second management device in the user terminal;
  • FIG. 8 is a fourth block diagram of a device for controlling an uplink physical channel carried by a plurality of uplink component carriers configured for one user terminal in a management device according to an embodiment of the present invention.
  • a typical application scenario of the present invention is shown.
  • user terminals 20, 21 for example, mobile phones, hereinafter referred to as mobile phones 20 and mobile phones 21
  • management devices 10, 11 e.g., base stations, hereinafter referred to as base stations 10 and base stations 11
  • base stations 10 and base stations 11 are shown.
  • MME/S-GW Mobility Management Entity/Serving Gateway
  • the mobile phone 20 is configured with five uplink component carriers for the air interface between the mobile phone 20 and the base station 10, and is respectively recorded as the uplink component carrier ae.
  • the uplink component carrier ae has a PRACH, that is, a time-frequency resource (for example, a resource block RB) for the PRACH is defined in advance on the uplink component carrier ae. Therefore, the foregoing selection of the uplink component carrier is specifically for the uplink component carrier with the PRACH. s Choice.
  • the mobile phone 20 is configured with five uplink component carriers and all with PRACH is non-limiting, and the present invention is equally applicable to the number of uplink component carriers being other values and/or the uplink component carrier with PRACH therein. The number of other values is the case.
  • the handset 20 is configured with 3 uplink component carriers, and 2 of the uplink component carriers have PRACEL
  • each uplink component carrier corresponds to one downlink component carrier. Therefore, when a user terminal is configured with more than 5 uplink component carriers, it is also configured with a plurality of downlink component carriers, and the number of downlink component carriers. It may be greater than, equal to, or less than the number of uplink component carriers. Without loss of generality, the mobile terminal 20 is configured with five downlink component carriers. To indicate the correspondence between the mobile component and the uplink component carrier, the downlink component carrier is also referred to as ae, where the uplink component carrier a corresponds to the downlink. Component carrier a, and so on.
  • a downlink component carrier corresponding to one uplink component carrier may be in an inactive or active state, and an uplink component carrier corresponding to an inactive downlink component carrier is also There are opportunities to be chosen.
  • the downlink component carrier a when the downlink component carrier a is in an active state, it is referred to as an active paired downlink component carrier of the uplink component carrier a.
  • the scenario in which the mobile phone 20 needs to select an uplink component carrier for information transmission using the PRACH includes: scheduling request transmission failure, handover, and uplink or downlink data arrival but loss of uplink synchronization, where handover refers to handover between base station jurisdictions. , can also be understood as inter-cell handover.
  • FIG. 2 there is shown in general a specific flow of an example of selecting an uplink component carrier when uplink or downlink data arrives but uplink synchronization is lost and scheduling request transmission fails.
  • step S200 the handset 20 needs to determine the condition for determining the random access failure, i.e., the UL RLF, that is, the uplink component carrier selection in this example is closely related to the above decision condition.
  • the conditions for determining the random access failure in the system may be various, and the base station 10 of the jurisdictional cell determines and notifies each user terminal in the cell, and the step S200 can thereby implement the representation decision broadcasted by the receiving base station 10.
  • Condition specific type The indication information, and according to the previous agreement with each user terminal, enables each user terminal including the mobile phone 20 to clearly and unambiguously determine the specific applicable decision condition only by the indication information.
  • each user terminal pre-stores a decision condition and, when an application is needed, invokes the condition and sequentially makes subsequent uplink component carrier selections.
  • the conditions for determining the failure of random access may include:
  • Condition (1) If the random access request transmitted on the PRACH carried by the primary uplink component carrier does not cause the request to succeed, it is determined that the random access of the user terminal has failed.
  • Condition (2) If the random access request transmitted on the physical random access channel carried by any of the plurality of uplink component carriers does not cause the request to succeed, it is determined that the random access of the user terminal has failed.
  • Condition (3) If the random access request transmitted on the physical random access channel carried by all the uplink component carriers of the plurality of uplink component carriers does not cause the request to succeed, the random access failure of the user terminal is determined.
  • Condition (4) if the random access request transmitted on the physical random access channel carried by all the uplink component carriers of the activated paired downlink carrier in the plurality of uplink component carriers does not cause the request to succeed, determining that the request is successful The random access of the user terminal failed.
  • the primary uplink component carrier that is, a predefined default uplink component carrier, is generally used by default when the PRACH transmission is required.
  • the pre-definition of the primary uplink component carrier may be implemented by means of a notification by the base station.
  • the base station 10 notifies the mobile phone 20 of the primary uplink component carrier by using RRC signaling or MAC layer signaling, for example, changing from a to the primary uplink component carrier.
  • RRC or MAC layer signaling can also be used for notification.
  • an uplink component carrier configured with a physical uplink control channel (PUCCH) is regarded as a primary uplink component carrier.
  • PUCCH physical uplink control channel
  • the reason for the request not reaching the goal mainly includes two types.
  • the radio condition of the channel is too poor, the random access request is not received by the base station correctly, and the second is competition, although the base station correctly receives the random access. please Therefore, because there are other user terminals, the base station does not consider the request of the user terminal, and the request is unsuccessful.
  • condition (1), (2) are beneficial to start reconnection as soon as possible when the channel conditions are bad, at the cost that if the reason for the unsuccessful request is competition, then unnecessary reconnection may occur. The user experience is reduced due to delays and the like.
  • condition (3) enables the user terminal to maintain the existing connection and uplink synchronization as much as possible, which is advantageous for the request to be unsuccessful due to competition, and avoids the business caused by unnecessary reconnection. Interrupt, of course, if the channel conditions are bad and the request is unsuccessful, then the meaning of trying other uplink component carriers to maintain the existing connection and uplink synchronization is not significant.
  • the handset 20 determines the primary uplink component carrier, e.g., the uplink component carrier c, in step S202, and transmits a random access request on the PRACH, such as a random access preamble, on the uplink component carrier c in step S204.
  • the random access request transmitted on the uplink component carrier c fails to cause the random access to succeed, since the condition (1) has been satisfied, the reconnection is directly performed without attempting other uplink component carriers.
  • the handset 20 similarly to condition (1), the handset 20 still only has one chance to send a random access request through the PRACH. Once it fails, it will cause the condition (2) to be satisfied and the other uplink component carriers cannot be tried. However, the handset 20 does not necessarily select the primary uplink component carrier.
  • the handset 20 randomly determines one of the uplink component carriers ae according to the condition (2) in step S202, and in the subsequent Transmitting a random access request in step S as a random access preamble, if not cause the request is successful, a random access failure is declared, the re-connection 204 in the uplink component carrier, for example, randomly determined uplink PRACH a component carrier carried on.
  • the handset 20 selects one of the uplink component carriers that is likely to be more likely to be successful. Since the mobile phone 20 does not know the channel quality of each uplink component carrier, the mobile phone 20 can use the guaranteed message 2/4 performance as a standard. To this end, in step S202, it is determined from the uplink component carrier ae that the channel condition is superior. An uplink component carrier of the downlink component carrier, and in the subsequent step S204, transmitting a random access request, such as a random access preamble, on the PRACH carried by the determined uplink component carrier, for example, the uplink component carrier b, if the request is successful, Declare random access failure and reconnect.
  • a random access request such as a random access preamble
  • step S202 can also be performed in a randomly determined manner, and when step S204 is performed on the randomly selected uplink component carrier, the request is successful, and then randomly performed in each of the previously selected uplink component carriers.
  • the selection, so iterative, until all the upstream component carriers ae have been traversed still does not result in a successful request, thereby starting a reconnection, or finally causing the request to succeed through some uplink component carrier.
  • the step S202 may also be performed by: determining, from the plurality of uplink component carriers ae, that the transmission on the physical random access channel can be performed earlier and/or the channel condition is better.
  • the method for selecting an uplink component carrier that satisfies the two elements includes: first determining an uplink component carrier that can perform transmission on the PRACH earlier, and if there are multiple carriers having the element, further determining a channel condition corresponding thereto An uplink component carrier of the optimal downlink component carrier is obtained as a result of step S202.
  • step S202 in step S204 fails to cause the request to succeed, the steps S202-S204 are repeatedly performed until the request is successful or the condition for determining the random access failure is satisfied. That is, traversing the uplink component carrier ae still fails to request success.
  • the selection process under condition (4) is similar to condition (3), and is not described in detail.
  • the carrier selection under condition (4) is limited to the selection of the uplink carrier with the active paired downlink carrier.
  • step S200 may be omitted, and step S202 is correspondingly simplified to perform one of the following operations.
  • An uplink component carrier is determined in the uplink component carrier ae:
  • the mobile phone 20 may select an uplink component carrier according to preset static configuration information, for example, configuration information indicating that the uplink component carrier is randomly selected, or randomly select a determination manner, or receive an indication from the base station 10 and select a certain determination manner based on the indication. Determine an uplink component carrier.
  • preset static configuration information for example, configuration information indicating that the uplink component carrier is randomly selected, or randomly select a determination manner, or receive an indication from the base station 10 and select a certain determination manner based on the indication. Determine an uplink component carrier.
  • scheduling requests that do not result in a successful request are often subject to poor channel conditions for the used uplink component carrier, especially if the number of allowed scheduling requests is sufficient. Therefore, there is reason to believe that when the scheduling request on the primary uplink component carrier does not cause the request to succeed, the random access on the primary uplink component carrier will not Causes the request to succeed. Therefore, what to do after the scheduling request on the primary uplink component carrier does not cause the request to succeed is related to the following two questions: 1- whether the PUCCH is accepted to disappear for a period of time; 2- whether to allow the re-connection of the primary uplink component carrier without reconnection Configuration.
  • the attempt to schedule the request may end on failing to cause the request to succeed on the original primary uplink component carrier and begin reconnection as soon as possible.
  • the mobile phone 20 will further select another uplink component carrier to transmit a random access request. Specifically, in step S300, the mobile phone 20 receives the uplink component carrier ae. One uplink component carrier is determined in each uplink component carrier except the primary uplink component carrier, and in S302, the mobile phone 20 sends a random access request by using the PRACH carried by the uplink component carrier determined in step S300.
  • step S300 may be implemented by performing any one of the following: determining, from the uplink component carrier ae, each uplink component carrier other than the primary uplink component carrier, capable of performing an earlier physical random access channel Transmitting and/or one uplink component carrier corresponding to a downlink component carrier with better channel conditions; and randomly determining one uplink component carrier from each uplink component carrier except the main uplink component carrier in the uplink component carrier a-. Steps S300-S302 are repeated until the request is successful, or until all the remaining 4 uplink component carriers are traversed, still failing to cause the request to succeed, and then reconnection is started.
  • the random access request may be sent through the above-mentioned primary uplink component carrier, and if the request is not successful, the reconnection is started.
  • the handset 20 preferably reports to the base station 10 that the SR transmission failure or the UL PCC channel condition is degraded, so that the base station 10 reconfigures the uplink component carrier, such as the uplink used to send the random access request that caused the request to be successful.
  • the component carrier is determined to be a new primary uplink component carrier.
  • the handset 20 is switched from being governed by a first management device, such as base station 10, to a second management device such as, for example, base station 11 in FIG.
  • a first management device such as base station 10
  • a second management device such as, for example, base station 11 in FIG.
  • the parties have reached a consensus that, advantageously, the management device, which is the target of the handover, needs to indicate the available uplink component carriers to the user terminal performing the handover in the handover command.
  • the handover command may also include configuration information of the PUCCH, such as which uplink component carrier the PUCCH is on, and the like.
  • the handover command may identify one of the uplink component carriers, for example, indicating which uplink component carrier the PUCCH is on, and the primary uplink component carrier is the one with the PUCCH.
  • the uplink component carrier 13 Further, the handover command may further identify an uplink component carrier corresponding to a dedicated access resource (eg, a dedicated access code), such as an uplink component carrier e.
  • a dedicated access resource eg, a dedicated access code
  • the primary uplink component carrier has the highest selected priority
  • the uplink component carrier corresponding to the dedicated access resource has the second highest selected priority.
  • step S400 the mobile phone 20 first receives a handover command from the base station 11, which includes information of a plurality of uplink component carriers with a physical random access channel, without loss of generality, in this example, the base station 11
  • the number of uplink component carriers configured for the handset 20 is less than the number of base stations 10, only four, such as the uplink component carrier be. It will be understood by those skilled in the art that the present invention does not limit the number of component carriers, the total bandwidth, and the bandwidth of individual component carriers that can be dominated by the various base stations. The present invention should be understood to cover various possible scenarios including these examples.
  • the handset 20 will determine an uplink component carrier from the uplink component carrier b-e according to the handover command.
  • an uplink component carrier with a PUCCH that is, a primary uplink component carrier
  • the handset 20 first performs handover on the primary uplink component carrier with the PUCCH, that is, the uplink component carrier is determined in step S402. And switching is performed by the PRACH carried by the uplink component carrier in step S404.
  • the primary uplink component carrier e.g., the uplink component carrier b and its corresponding downlink component carrier b, are automatically activated when the handset 20 is initially successfully accessed.
  • the other uplink component carriers can be activated by the base station 20 via CE signaling at the MAC layer.
  • steps S402-S404 are repeatedly performed, and in step S402 of repeated execution, the primary uplink component carrier b is considered. If the uplink handover is unsuccessful, the mobile phone 20 determines whether the uplink component carrier corresponding to the dedicated access resource is also identified in the handover command, and the uplink component carrier be does have an uplink component carrier e corresponding to the dedicated access resource. Therefore, in step S402, which is repeatedly performed, the uplink component carrier e is determined, and then the handover is attempted on the uplink component carrier e in step S404.
  • step S404 If the repeated switching in step S404 fails again, it can be converted to a contention based random access procedure.
  • the mobile phone 20 preferably performs the contention-based handover attempt by replacing the uplink component carrier, because the previous failure is basically due to Poor channel conditions.
  • the repeatedly performing step S402 includes any one of the following items:
  • the predetermined condition for terminating the repetitive loop may be: all other uplink component carriers except the primary uplink component carrier have been traversed, and the handover has not been successfully performed; the primary uplink has been traversed. All other uplink component carriers except the component carrier, and the primary uplink component carrier is tried again, and the handover is still not successful; the number of uplink component carriers that have been tried reaches a predetermined threshold, and the handover is still not successful.
  • the predetermined condition for terminating the repetitive loop may be: all uplink component carriers have been traversed, and the handover has not been successfully performed; the uplink component carrier that has been tried reaches a predetermined threshold, Failed to switch successfully.
  • step S40 2 wherein the mobile phone 20 performs any one of the following items to determine one uplink component carrier from each uplink component carrier; - selecting, from the plurality of uplink component carriers, the main uplink component An uplink carrier corresponding to the dedicated access resource other than the carrier; - determining, from the plurality of uplink component carriers, each uplink component carrier other than the primary uplink component carrier, capable of transmitting on the physical random access channel earlier And/or one uplink component carrier corresponding to a downlink component carrier with better channel conditions; - randomly determining one uplink component carrier from each of the plurality of uplink component carriers except the main uplink component carrier.
  • the handover command notified by the second management device includes a dedicated access resource, the access request is sent on the corresponding uplink component carrier.
  • steps S402-S404 are repeated until the handover is successful or all other uplink component carriers except the primary uplink component carrier are traversed. After all the other uplink component carriers are traversed and cannot be successfully switched, the reconnection may be directly triggered, or the main uplink component carrier may be tried again, and the reconnection is performed again after the handover fails.
  • the base station 10 automatically determines the uplink component carrier (another uplink component carrier other than the primary uplink component carrier) that caused the handover to be successful as the new primary uplink component carrier.
  • the method includes the following steps, taking the base station 10 and the mobile phone 20 as an example:
  • the base station 11 receives a report indicating that the SR transmission failed from the mobile phone 10, and reconfigures the UL PCC, or the base station 11 knows that the channel quality of the UL PCC is deteriorated according to the measurement of the base station 11 itself, and then automatically reconfigures the UL PCC, for example, The handset 10 selects another uplink component carrier as the new primary uplink component carrier.
  • the mobile phone 20 reports the SR transmission failure to the base station 10 after transmitting the random access request through the uplink component carrier other than the primary uplink component carrier, and then the base station 10 will cause the mobile phone 20 to be caused.
  • the uplink component carrier that is requested to be successful is determined as the new primary uplink component carrier.
  • the second management device that is the handover destination automatically determines the uplink component carrier that causes the handover to be successful as the new master. Uplink component carrier.
  • FIG. 5 there is shown a block diagram of a first apparatus for transmitting a random access request on a physical random access channel in a user terminal, wherein the user terminal is configured, according to an embodiment of the present invention.
  • the plurality of uplink component carriers with a physical random access channel, the first device 50 is typically located in the mobile phone 20 shown in FIG. 1, and includes:
  • the first unit 502 is configured to determine a condition for determining a random access failure, and corresponds to step S200 shown in FIG. 2;
  • the second unit 504 is configured to determine, according to the condition that the random access failure is determined, an uplink component carrier from the plurality of uplink component carriers, corresponding to step S202 shown in FIG. 2;
  • the first transmitter 506 is configured to send the random access request to the management device on the physical random channel carried by the determined uplink component carrier, corresponding to step S204 shown in FIG.
  • condition for determining the random access failure determined by the first unit 502 includes any one of the following items: I. including one primary uplink component in the multiple uplink component carriers. a carrier, if the random access request sent on the physical random access channel carried by the primary uplink component carrier does not cause the request to succeed, determining that the random access of the user terminal fails; If the random access request sent on the physical random access channel carried by any of the uplink component carriers does not cause the request to be successful, the random access of the user terminal is determined to be failed; III. If the random access request sent on the physical random access channel carried by all the uplink component carriers in the component carrier does not cause the request to succeed, it is determined that the random access of the user terminal fails.
  • the second unit 502 is further configured to: send the random access request on the physical random access channel carried by the primary uplink component carrier; or
  • the second unit 502 is configured to perform the following operations. Any one of: determining, from the plurality of uplink component carriers, an uplink component carrier corresponding to a downlink component carrier having a better channel condition; and randomly determining an uplink component carrier from the plurality of uplink component carriers; or
  • the second unit 502 is configured to perform the following Any one of the operations: determining, from the plurality of uplink component carriers, an uplink component carrier capable of transmitting on the physical random access channel earlier and/or corresponding to a downlink component carrier having better channel conditions; One uplink component carrier is randomly determined from the plurality of uplink component carriers.
  • the second unit 502 and the first transmitter 504 are further configured to: if the random access request sent by the first transmitter 504 fails to cause the request to be successful, perform the corresponding operations repeatedly until the request is successful or the decision is random The condition of access failure is satisfied;
  • the second unit 502 is configured to determine, from the uplink component carriers remaining among the multiple uplink component carriers, that the transmission on the physical random access channel can be performed earlier and/or corresponds to a channel condition, when the corresponding operation is repeatedly performed.
  • An uplink component carrier of the preferred downlink component carrier is configured to determine, from the uplink component carriers remaining among the multiple uplink component carriers, that the transmission on the physical random access channel can be performed earlier and/or corresponds to a channel condition, when the corresponding operation is repeatedly performed.
  • the first unit 502 is not necessary.
  • the first The two units 504 select the appropriate uplink component carrier either randomly or according to channel conditions as described above, independent of the condition for deciding random access failure.
  • FIG. 6 there is shown a second apparatus block diagram for transmitting a random access request after a scheduling request transmission failure in a user terminal according to an embodiment of the present invention, wherein the user terminal is configured to include the main A plurality of uplink component carriers with a physical random access channel, such as an uplink component carrier, the second device 60 is typically located in the user terminal 20 of FIG. 1, and includes:
  • the third unit 602 is configured to perform any one of the following, to determine an uplink component carrier from the plurality of uplink component carriers, corresponding to step S300 shown in FIG. 3;
  • each of the uplink component carriers other than the primary uplink component carrier Determining, from the plurality of uplink component carriers, each of the uplink component carriers other than the primary uplink component carrier, that the transmission on the physical random access channel can be performed earlier and/or the downlink component carrier corresponding to a better channel condition One uplink component carrier;
  • the second transmitter 604 is configured to send the random access request by using the determined physical random access channel carried by the uplink component carrier, corresponding to step S302 shown in FIG.
  • the third apparatus block diagram for switching from being governed by a first management device to being governed by a second management device in a user terminal in accordance with an embodiment of the present invention, the third The device 70 is typically located in the user terminal 20 of FIG. 1, and includes:
  • the receiver 702 is configured to receive a handover command sent by the second management device, for example, the base station 11, where the information about the uplink component carrier with the physical random access channel is included, and corresponds to step S400 in FIG.
  • the fourth unit 704 is configured to determine, according to the handover command, an uplink component carrier from the plurality of uplink component carriers, corresponding to step S402 in FIG.
  • the fifth unit 706 is configured to perform the switching by using the determined uplink component carrier, corresponding to step S404 shown in FIG.
  • the fourth unit 704 and the fifth unit 706 will repeatedly perform the corresponding operations until the handover is successful or the predetermined condition is met. Further, the fourth unit 706 is configured to: determine whether the handover command identifies one primary uplink component carrier in the multiple uplink component carriers, if the handover command identifies one of the multiple uplink component carriers The primary uplink component carrier uses the primary uplink component carrier as the determined uplink component carrier.
  • the operations performed by the fourth unit 704 repeatedly include: determining whether the handover command identifies an uplink corresponding to the dedicated access resource in the multiple uplink component carriers. a component carrier, and if the handover command identifies an uplink component carrier corresponding to the dedicated access resource in the plurality of uplink component carriers, the uplink component corresponding to the dedicated access resource is used as the first The uplink component carrier determined by the four unit 704.
  • the handover command does not identify any one of the primary uplink component carriers, or if the primary uplink component carrier is identified, the handover by the primary uplink component carrier is absent, although the uplink component carrier corresponding to the dedicated access resource is identified.
  • the handover by the uplink component carrier corresponding to the dedicated access resource is also unsuccessful, and the operation repeatedly performed by the fourth unit 704 includes any one of the following items:
  • One uplink component carrier is randomly determined from each uplink component carrier that has never been attempted.
  • FIG. 8 there is shown a fourth apparatus for controlling an uplink physical channel carried by a plurality of uplink component carriers configured for one user terminal in a management device according to an embodiment of the present invention,
  • the four devices 80 are typically located in the base station 10 of FIG. 1, and include:
  • the determining device 802 is configured to determine whether the user terminal sends a request message on a physical random access channel carried by another uplink component carrier other than the primary uplink component carrier, and causes the request to succeed;
  • the sixth unit 804 is configured to: if the user terminal sends a request message on a physical random access channel carried by another uplink component carrier other than the primary uplink component carrier, and causes If the request is successful, the other uplink component is determined as the primary uplink component carrier of the user terminal.

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Description

基于载波聚合的处理物理随机
接入信道传输的方法和装置 技术领域
本发明涉及无线网络的物理随机接入信道上的信息传输, 尤其涉 及无线网络的用户终端在多个上行分量载波中选择用于传输物理随 机接入信道(PRACH ) 上的信息的上行分量载波的方法和装置。 背景技术
在长期演进 (Long Term Evolution, LTE)系统中, 用户终端一般被配 置一个带宽不大于 20MHz的载波。 由于只有一个载波, 用户终端在发 送物理随机接入信道上的信息时, 不涉及对载波选择问题。
改进的长期演进 (LTE-Advanced, LTE-A)系统在 LTE 系统的基础上 引入了载波聚合 ( carrier aggregation ) 的概念, 具体包括连续载波聚合 以及非连续载波聚合, 聚合后的最大带宽可达 100MHz。 同时, 为了使 载波聚合技术向后兼容 LTE, 这 100MHz的带宽分为 5个最大带宽为 20MHz的分量载波 (component carrier, CC), 其中的每个分量载波应能 够配置成与 LTE后向兼容的载波。 对一个用户终端而言, 它可以被配置 其中的 1〜5个分量载波。 由此, 不但可用带宽较之以前成倍地增长, 演 进的节点 B (下称基站)对用户终端的上行数据传输的调度也具有更大 的灵活性。
在现有技术中, 尚无这样的一种解决方案, 使配置了多个上行分 量载波的用户终端在需要进行物理随机接入信道上的传输时, 能够选 择一个上行分量载波。 发明内容
本发明提供的解决方案可以有利于配置了多个上行分量载波的 用户终端为进行物理随机接入信道上的传输时选择上行分量载波。
具体地, 根据本发明的一个实施例, 提供了一种在用户终端中用 于在发送物理随机接入信道上发送的随机接入请求的方法, 其中, 所 述用户终端被配置了多个带有物理随机接入信道的上行分量载波, 该 方法包括如下步骤: b. 执行以下各项操作中的一项,在所述多个上行 分量载波中确定一个上行分量载波, - 从所述多个上行分量载波中随 机地确定一个上行分量载波; - 从所述多个上行分量载波中具有信道 条件较佳的激活的配对激活的配对下行分量载波的一个上行分量载 波; - 从所述多个上行分量载波中确定能够较早进行物理随机接入信 道上的发送的一个上行分量载波; - 确定作为主上行分量载波的一个 上行分量载波; c 在所确定的上行分量载波所带的物理随机信道上向 所述管理设备发送所述随机接入请求。
根据本发明的另一具体实施例,提供了一种在用户终端中在调度 请求发送失败后发送随机接入请求的方法, 其中, 所述用户终端被配 置了包括所述主上行分量载波在内的多个带有物理随机接入信道的 上行分量载波, 该方法包括以下步骤: A. 执行以下各项中的任一项, 来从所述多个上行分量载波中确定一个上行分量载波; - 从所述多个 上行分量载波除所述主上行分量载波以外的各个上行分量载波中确 定能够较早进行物理随机接入信道上的发送和 /或对应于一个信道条 件较优的下行分量载波的一个上行分量载波; - 从所述多个上行分量 载波除所述主上行分量载波以外的各个上行分量载波中随机确定一 个上行分量载波; B. 通过所确定的上行分量载波所带的物理随机接 入信道来发送所述随机接入请求。
根据本发明的又一具体实施例,提供了一种在用户终端中用于从 由一个第一管理设备的管辖切换至由一个第二管理设备管辖的方法, 包括以下步骤: 1. 接收所述第二管理设备发来的切换命令, 其中包含 多个带有物理随机接入信道的上行分量载波的相关信息; m. 根据所 述切换命令和一个预定规则, 从所述多个上行分量载波中确定一个上 行分量载波; n. 通过所确定的上行分量载波来执行所述切换; 如果所 述步骤 0中执行的切换没有成功,则重复执行所述步骤 m-o直至切换 成功或满足预定条件。 根据本发明的又一具体实施例,提供了一种在管理设备中用于对 为一个用户终端配置的多个上行分量载波所带的上行物理信道进行 控制的方法, 包括以下步骤: 判断所述用户终端是否在主上行分量载 波以外的另一上行分量载波所带的物理随机接入信道上请求消息并 导致请求成功; 如果所述用户终端在主上行分量载波以外的另一上行 分量载波所带的物理随机接入信道上发送请求消息并导致请求成功, 则将所述另一上行分量确定为所述用户终端的主上行分量载波。
根据本发明的又一具体实施例,提供了一种在用户终端中用于在 物理随机接入信道上发送随机接入请求的第一装置, 其中, 所述用户 终端被配置了多个带有物理随机接入信道的上行分量载波, 该第一装 置包括: 第二单元, 用于执行以下各项操作中的一项, 在所述多个上 行分量载波中确定一个上行分量载波, - 从所述多个上行分量载波中 随机地确定一个上行分量载波; - 从所述多个上行分量载波中具有信 道条件较佳的激活的配对下行分量载波的一个上行分量载波; - 从所 述多个上行分量载波中确定能够较早进行物理随机接入信道上的发 送的一个上行分量载波; - 确定作为主上行分量载波的一个上行分量 载波; 第一发送器, 用于在所述第二单元确定的上行分量载波所带的 物理随机信道上向所述管理设备发送所述随机接入请求。
根据本发明的又一具体实施例,提供了一种在用户终端中在调度 请求发送失败后发送随机接入请求的第二装置, 其中, 所述用户终端 被配置了包括所述主上行分量载波在内的多个带有物理随机接入信 道的上行分量载波, 该第二装置包括: 第三单元, 用于执行以下各项 中的任一项, 来从所述多个上行分量载波中确定一个上行分量载波; - 从所述多个上行分量载波除所述主上行分量载波以外的各个上行 分量载波中确定能够较早进行物理随机接入信道上的发送和 /或对应 于一个信道条件较优的下行分量载波的一个上行分量载波; - 从所述 多个上行分量载波除所述主上行分量载波以外的各个上行分量载波 中随机确定一个上行分量载波; 第二发送器, 用于通过所确定的上行 分量载波所带的物理随机接入信道来发送所述随机接入请求。 根据本发明的又一具体实施例, 提供了一种在用户终端中用于从 由一个第一管理设备的管辖切换至由一个第二管理设备管辖的第三 装置, 包括: 接收器, 用于接收所述第二管理设备发来的切换命令, 其中包含多个带有物理随机接入信道的上行分量载波的相关信息; 第 四单元, 用于根据所述切换命令, 从所述多个上行分量载波中确定一 个上行分量载波; 第五单元, 用于通过所确定的上行分量载波来执行 所述切换; 其中, 如果所述第五单元所执行的切换没有成功, 所述第 四、 第五单元将重复执行相应操作直至切换成功或满足预定条件。
根据本发明的又一具体实施例,提供了一种在管理设备中用于对 为一个用户终端配置的多个上行分量载波所带的上行物理信道进行 控制的第四装置, 包括: 判断装置, 用于判断所述用户终端是否在主 上行分量载波以外的另一上行分量载波所带的物理随机接入信道上 发送请求消息并导致请求成功; 第六单元, 用于如果所述用户终端在 主上行分量载波以外的另一上行分量载波所带的物理随机接入信道 上发送请求消息并导致请求成功, 则将所述另一上行分量确定为所述 用户终端的主上行分量载波。
通过利用本发明提供的方法和装置, 用户终端能够在载波聚合条 件下为物理随机接入信道 (PRACH ) 上的信息选择适当的上行分量 载波, 从而优化了随机接入过程、 切换过程和资源请求过程。 附图说明
通过阅读以下参照附图对非限制性实施例所作的详细描述, 本发 明的其它特征、 目的和优点将会变得更明显。
图 1为根据本发明的一个典型的应用场景;
图 2为根据本发明的一个具体实施例的在用户终端中在物理随机 接入信道上发送随机接入请求的方法流程图;
图 3为根据本发明的一个具体实施例的在用户终端中在调度请求 失败后发送随机接入请求的方法流程图;
图 4 为根据本发明的一个具体实施例的在用户终端中用于从由 一个第一管理设备的管辖切换至由一个第二管理设备管辖的方法流 程图;
图 5为根据本发明的一个具体实施例的在用户终端中用于在物理 随机接入信道上发送随机接入请求的第一装置框图;
图 6为根据本发明的一个具体实施例的在用户终端中在调度请求 失败调度请求发送失败后发送随机接入请求的第二装置框图;
图 7 为在用户终端中用于从由一个第一管理设备的管辖切换至 由一个第二管理设备管辖的第三装置框图;
图 8 为根据本发明的一个具体实施例的在管理设备中用于对为 一个用户终端配置的多个上行分量载波所带的上行物理信道进行控 制的第四装置框图。
其中, 相同或相似的附图标记表示相同或相似的特征。 具体实施方式
以下结合附图对本发明的具体实施例进行详细的示例性描述。其 中, 虽然主要以 LTE-A系统为例, 但本领域技术人员理解, 本发明能 够适用于任何各种多个载波的场景, 这些实施例只是为了说明本发 明, 而非对其加以限制。
参看图 1 , 所示为本发明的一个典型的应用场景。 其中, 示出了 用户终端 20,21 (例如手机, 下称手机 20和手机 21 )及其所属的管理 设备 10,11 (例如基站, 下称基站 10和基站 11 ), 基站 10,11的另一 侧是移动性管理实体 /服务网关 (MME/S-GW )。
以下针对用户终端的讨论主要以手机 20为例, 本领域技术人员 理解同样的描述也可以适用于手机 21 以及其它图中未示出的用户终 端。 根据本发明的一个具体实施例, 手机 20被配置了 5个上行分量 载波, 用于手机 20与基站 10之间的空中接口, 分别记为上行分量载 波 a-e。假设上行分量载波 a-e均带有 PRACH也即,上行分量载波 a-e 上分别预先定义了用于 PRACH的时频资源(例如资源块 RB )。于是, 上述的对上行分量载波的选择具体为对带有 PRACH的上行分量载波 的选择。 应当理解, 上述的手机 20被配置 5个上行分量载波且全部 带有 PRACH的例子是非限定性的, 本发明同样适用于上行分量载波 的数量为其它数值和 /或其中带有 PRACH 的上行分量载波的数量为 其它数值的情形。 这样的其它例子如, 手机 20被配置 3个上行分量 载波, 且其中 2个上行分量载波带有 PRACEL
一般地, 每个上行分量载波又对应于一个下行分量载波, 于是, 一个用户终端在被配置了 5多个上行分量载波的同时, 往往也被配置 了若干个下行分量载波, 下行分量载波的数量可以大于、 等于或小于 上行分量载波的数量。 不失一般性地, 移动终端 20被配置了 5个下 行分量载波, 为表示其与上行分量载波之间的对应关系, 将这些下行 分量载波也记为 a-e, 其中, 上行分量载波 a对应于下行分量载波 a, 以此类推。 当然, 根据本发明的至少一个具体实施例, 一个上行分量 载波所对应的下行分量载波可能是处于非激活状态 (deactive ) 或激 活状态, 而一个对应于非活动的下行分量载波的上行分量载波同样有 被选择的机会。 例如, 当下行分量载波 a处于激活状态时, 将其称为 上行分量载波 a的一个激活的配对下行分量载波。
典型地, 手机 20需要为使用 PRACH进行信息传输而选择上行 分量载波的场景包括: 调度请求发送失败、 切换以及上行或下行数据 到来但失去上行同步, 这里的切换指在基站的管辖之间的切换, 也可 以理解为小区间切换。 以下分别对这些场景下的上行分量载波选择加 以诠释, 以上述的有 5个可选的上行分量载波 a-e的情况为例。
参看图 2, 其中概括地示出了在上行或下行数据到来但失去上行 同步以及调度请求发送失败时选择上行分量载波的一个例子的具体 流程。
首先, 在步骤 S200 中, 手机 20 需要确定判决随机接入失败即 UL RLF的条件, 也即, 本例中的上行分量载波选择是与上述判决条 件紧密联系的。 例如, 系统中使用的判决随机接入失败的条件可以有 多种, 且由管辖小区的基站 10来确定并通知小区内的各个用户终端, 步骤 S200由此可以实现为接收基站 10广播的表示判决条件具体类型 的指示信息, 而根据与各个用户终端之前的约定, 使得包括手机 20 在内的各个用户终端仅凭这一指示信息就可以无碍地明确确定具体 适用的判决条件。 或者, 根据一个更为固定的例子, 各个用户终端预 先保存一种判决条件, 并在需要应用时, 调用该条件并依次做出后续 的上行分量载波选择。
判决随机接入失败的条件不失一般性地可以包括:
条件(1): 如果在主上行分量载波所带的 PRACH上发送的随机接 入请求未导致请求成功, 则判定用户终端的随机接入失败。
条件 (2): 如果在多个上行分量载波中任一上行分量载波所带的 物理随机接入信道上发送的随机接入请求未导致请求成功, 则判定用 户终端的随机接入失败。
条件 (3): 如果在多个上行分量载波中的所有上行分量载波所带 的物理随机接入信道上发送的随机接入请求均未导致请求成功, 则判 定用户终端的随机接入失败。
条件 (4): 如果在多个上行分量载波中的所有具有激活的配对下 行载波的上行分量载波所带的物理随机接入信道上发送的随机接入 请求均未导致请求成功, 则判定所述用户终端的随机接入失败。
其中,所谓主上行分量载波,即一个预定义的默认上行分量载波, 通常,在需要进行 PRACH的传输时,默认先使用该主上行分量载波。 主上行分量载波的预定义可以通过基站通知的方式实现, 例如, 基站 10使用 RRC信令或 MAC层信令将主上行分量载波通知手机 20, 如 果主上行分量载波发生变化, 例如从 a变到 d, 也同样可以使用 RRC 或 MAC层信令进行通知。一般地,配置有物理上行控制信道( PUCCH ) 的上行分量载波视为主上行分量载波。
本文中, 将一个随机接入请求发出后未能得到基站的响应或者即 使得到基站的响应但解决竟争过程失败, 该接入随机接入请求(或简 称请求)未能导致请求成功, 或者说请求未达目的, 请求未达目的的 原因主要包括两种, 一是信道的无线条件过差, 随机接入请求根本没 有无法被基站正确接收, 二是竟争, 虽然基站正确接收了随机接入请 求, 但由于还有其它的用户终端的存在, 基站不考虑本用户终端的此 次请求, 从而导致请求不成功。 至少在 LTE-A R10中, 假定不同的上 行分量载波处于近似相同的无线信道条件, 因此, 源于信道的无线条 件过差的请求不成功, 意味着即使更换上行分量载波, 也不会导致请 求成功。
由此可见, 一方面, 上述的条件( 1 ), ( 2 )有利于在信道条件恶 劣时尽快地开始重新连接, 代价是一旦请求不成功的原因是竟争, 那 么不必要的重连接会因其时延等原因而降低用户体验。 另一方面, 条 件 (3 ) 使用户终端能够尽量维持现有的连接和上行同步, 这对于请 求因竟争而不成功是有利的, 避免了因不必要的重连接所带来的对业 务的中断, 当然, 如果信道条件恶劣导致请求不成功, 那么尝试其它 的上行分量载波以争取维持现有的连接和上行同步的意义就不大。
根据 LTE-A的规定, 随机接入的失败( UL RLF )将导致重新连 接,因此,不同地判决随机接入失败的条件将决定是更快地重新连接, 还是尽量维持现有的连接。以下对上述条件( 1 )-( 3 )及相应的 PRACH 传输用上行分量载波选择方案加以介绍。
> 条件 ( 1 )
根据这一条件,在步骤 S202中手机 20确定主上行分量载波例如 上行分量载波 c, 并在步驟 S204中在上行分量载波 c上发送 PRACH 上的随机接入请求, 例如随机接入前导。 当在上行分量载波 c上发送 的随机接入请求未能导致随机接入成功, 则由于条件( 1 ) 已经满足, 于是直接进行重新连接, 而不再尝试其它上行分量载波。
> 条件 ( 2 )
根据这一条件, 与条件 ( 1 ) 类似地, 手机 20 仍只有一次通过 PRACH发送随机接入请求的机会, 一旦失败, 将导致条件(2 )满足 而无法尝试其它上行分量载波。 不过, 手机 20并不一定选择主上行 分量载波。
作为几种相互替代的方式中的一种,手机 20在步骤 S202中根据 条件(2 )来从上行分量载波 a-e中随机地确定其中之一, 并在随后的 步骤 S204中在随机确定的上行分量载波例如上行分量载波 a所带的 PRACH 上发送随机接入请求如随机接入前导, 若未导致请求成功, 则宣告随机接入失败, 进行重连接。
作为几种相互替代的方式中的另一种, 有利地, 手机 20选择导 致请求成功可能性较大优选最大的一个上行分量载波。 由于手机 20 不知道各个上行分量载波的信道质量, 手机 20 可以以保证较好的 Message 2/4表现为标准, 为此, 在步骤 S202中从上行分量载波 a-e 中确定对应于信道条件较优的下行分量载波的一个上行分量载波, 并 在随后的步驟 S204中在确定的上行分量载波例如上行分量载波 b所 带的 PRACH上发送随机接入请求如随机接入前导, 若未导致请求成 功, 则宣告随机接入失败, 进行重连接。
> 条件 ( 3 )
根据这一条件, 同样可以采用随机确定的方式来执行步骤 S202, 并在随机选择的上行分量载波上执行步骤 S204 未能导致请求成功 时,再在之前未选择的各个上行分量载波中再行随机选择,如此反复, 直至已经遍历所有的上行分量载波 a-e仍不能导致请求成功, 从而开 始重连接, 或者, 终于通过某个上行分量载波导致请求成功。
或者, 根据条件 (3 ), 步骤 S202还可以通过以下方式来执行: 从多个上行分量载波 a-e中确定能够较早进行物理随机接入信道上的 发送和 /或对应于一个信道条件较优的下行分量载波的一个上行分量 载波。 其中, 选择满足这两个要素的上行分量载波的方法包括, 首先 确定能够较早地进行 PRACH上的发送的上行分量载波, 如果有多个 具备该要素的载波, 则从中进一步确定对应于信道条件最优的下行分 量载波的一个上行分量载波, 作为步骤 S202的结果。 如果此后步骤 S204中通过步骤 S202所确定的上行分量载波所带的 PRACH发出的 随机接入请求未能导致请求成功, 则重复执行步骤 S202-S204直至请 求成功或判决随机接入失败的条件被满足也即遍历上行分量载波 a-e 仍未能请求成功。
其中, 条件 (4 ) 下的选择过程类似于条件 (3 ), 不赘述, 其区 别在于条件 (4 ) 下的载波选择只限于具有激活的配对下行载波的上 行载波中选择。
应当理解, 图 2所示的流程只是一个非限定性的例子, 根据本发 明的另一具体实施例, 步骤 S200可以省略, 而步骤 S202相应地简化 为执行以下各项操作中的一项, 在上行分量载波 a-e中确定一个上行 分量载波:
- 从上行分量载波 a-e中随机地确定一个上行分量载波;
- 确定上行分量载波 a-e中具有信道条件较佳的激活的配对下行 分量载波的一个上行分量载波;
- 从上行分量载波 a-e中确定能够较早进行物理随机接入信道上 的发送的一个上行分量载波;
- 确定作为主上行分量载波的一个上行分量载波。
手机 20可以根据预先的静态配置信息例如指示随机选择上行分 量载波的配置信息来选择上行分量载波, 或者随机选择一个确定方 式, 或者, 接收来自基站 10的指示并基于该指示来选择一个确定方 式后确定一个上行分量载波。
上面已经结合图 2对上行或下行数据到来但失去上行同步时和调 度请求发送失败后的随机接入请求在 PRACH上的发送的一些实施例 做了介绍。 作为一种替代方式, 调度请求发送失败后的随机接入请求 实现方式, 以下是详细介绍。 其中, 本文中探讨的调度请求发送失败 例如 LTE-A 中定义的: 经过允许的调度请求 (SR )传输次数后, 都 没有成功, 则称调度请求发送失败, 本文中也称做调度请求 (消息) 未导致 (调度) 成功。 在 SR发送失败后, 需要执行 PRACH传输, 一种方式已经参照图 2作了详述,下面参照图 3介绍另一种可行方式。
一般而言, 未导致请求成功的调度请求往往是受累于所使用的上 行分量载波糟糕的信道条件, 在允许的调度请求发送次数足够多的情 况下更是如此。 因此, 有理由相信在主上行分量载波上的调度请求未 导致请求成功时, 再在这个主上行分量载波上发出随机接入同样不会 导致请求成功。 因此, 在主上行分量载波上的调度请求未导致请求成 功之后怎样处理与以下两个问题有关: 1-是否接受 PUCCH消失一段 时间; 2-是否允许不进行重连接而进行主上行分量载波的重新配置。
如果对上述两个问题的回答是否定的, 那么调度请求的尝试可以 止于在最初的主上行分量载波上未能导致请求成功, 并尽快开始重连 接。
相反, 如果对上述两个问题的回答是肯定的, 参看图 3 , 手机 20 将会进一步选择其它的上行分量载波发送随机接入请求, 具体地, 在 步骤 S300中, 手机 20从上行分量载波 a-e中除主上行分量载波以外 的各个上行分量载波中确定一个上行分量载波, 在 S302中, 手机 20 通过步骤 S300 中所确定的上行分量载波所带的 PRACH发送随机接 入请求。
更具体地, 步骤 S300可以通过执行以下各项中的任一项来实现: 从上行分量载波 a-e中除主上行分量载波以外的各个上行分量载波中 确定能够较早进行物理随机接入信道上的发送和 /或对应于一个信道 条件较优的下行分量载波的一个上行分量载波; 从上行分量载波 a- 中 e除主上行分量载波以外的各个上行分量载波中随机确定一个上行 分量载波。 步骤 S300-S302重复执行直至请求成功, 或直至遍历所有 剩余 4个上行分量载波仍不能导致请求成功, 于是开始重连接。
作为一种替代方式, 如果遍历剩余的 4个上行分量载波仍无法导 致请求成功, 可以再尝试通过上述的主上行分量载波发送随机接入请 求, 如果还无法导致请求成功, 则开始重连接。
其中, 如果请求成功, 手机 20优选地向基站 10报告 SR发送失 败或 UL PCC信道条件恶化, 以便于基站 10重新配置住上行分量载 波, 如将发送导致请求成功的随机接入请求所使用的上行分量载波确 定为新的主上行分量载波。
如前所述, 另一种要讨论的场景就是切换, 具体说来就是手机 20 从由一个第一管理设备例如基站 10管辖切换至由一个第二管理设备 如一个例如图 1中的基站 11未示出的另一基站管辖。 在 LTE-A的讨 论进程中, 各方已经达成共识, 有利地, 即作为切换的目标地的管理 设备需要在切换命令中向执行切换的用户终端表明可用的各个上行 分量载波。, 另一个共识在于该切换命令中还可能可包括 PUCCH 的 配置信息, 例如 PUCCH在哪个上行分量载波上, 等等。
其中, 切换命令中除了多个上行分量载波之外, 还可以将其中一 个标识为主上行分量载波, 例如, 表明 PUCCH在哪个上行分量载波 上, 而主上行分量载波就是带有 PUCCH的那一个, 例如上行分量载 波13。 更进一步地, 切换命令中还可以再标识与专用接入资源(例如, 专用接入码)相对应的上行分量载波, 例如上行分量载波 e。 根据本 发明的一个具体实施例, 主上行分量载波具有先天的最高的被选优先 级, 与专用接入资源相对应的上行分量载波具有先天的次高的被选优 先级。
参看图 4,在步骤 S400中,手机 20首先接收来自基站 11的切换 命令, 其中包含了多个带有物理随机接入信道的上行分量载波的信 息, 不失一般性地, 本例中基站 11为手机 20配置的上行分量载波数 量少于基站 10, 仅为 4个, 例如上行分量载波 b-e。 本领域技术人员 理解, 本发明并不限制各个基站所能支配的分量载波数目、 总带宽以 及各个分量载波的带宽, 本发明应被理解为覆盖包括这些例子在内的 各种可能的情况。
在步骤 S402中, 手机 20将根据切换命令, 从上行分量载波 b-e 中确定一个上行分量载波。 有利地, 如果其中包括一个带有 PUCCH 的上行分量载波即一个主上行分量载波,手机 20首先在带有 PUCCH 的这个主上行分量载波上执行切换, 也即在步骤 S402 中确定该上行 分量载波, 并在步骤 S404 中通过该上行分量载波所带的 PRACH执 行切换。 其中, 这个主上行分量载波例如上行分量载波 b及其相应的 下行分量载波 b在手机 20最初成功地接入时就以自动激活。 其它的 上行分量载波可以由基站 20通过 MAC层的 CE信令来加以激活。
如果在主上行分量载波 b上执行的切换未能成功, 将重复执行步 骤 S402-S404, 在重复执行的步骤 S402中, 考虑到主上行分量载波 b 上切换未成功, 手机 20判断切换命令中是否还标识了一个与专用接 入资源相对应的上行分量载波, 而由于上行分量载波 b-e中确有一个 与专用接入资源相对应的上行分量载波 e,因此,重复执行的步骤 S402 中, 上行分量载波 e被确定出来, 而后则是在步骤 S404中通过上行 分量载波 e上尝试切换。
如果重复执行的步骤 S404 中的切换又失败, 则可以转为基于竟 争的随机接入过程。 此时, 通过与专用接入资源相对应的上行分量载 波 e的切换未能成功以后, 手机 20优选地换一个上行分量载波进行 所述基于竟争的切换尝试, 因为此前的失败基本上是由于糟糕的信道 条件所致。
根据本发明的一个具体实施例, 如果切换命令没有标识任何一个 主上行分量载波, 或者, 虽然标识了主上行分量载波但通过该主上行 对应的上行分量载波, 或者, 虽然标识了与专用接入资源相对应的上 行分量载波, 但通过该与专用接入资源相对应的上行分量载波进行的 切换也没有成功, 则, 重复执行的步骤 S402 包括以下各项中的任一 项:
从未尝试的各个上行分量载波中确定能够较早进行物理随机接 入信道上的发送和 /或对应于一个信道条件较优的下行分量载波的一 个上行分量载波;
从未尝试的各个上行分量载波中随机确定一个上行分量载波。 以切换命令标识了主上行分量载波的情形为例, 终止重复循环的 预定条件可以是: 已经遍历了主上行分量载波之外的所有其他上行分 量载波, 仍未能成功切换; 已经遍历了主上行分量载波之外的所有其 他上行分量载波,并再一次尝试了主上行分量载波,仍未能成功切换; 已经尝试的上行分量载波的数量达到一个预定阈值, 仍未能成功切 换。 以切换命令未标识主上行分量载波的情形为例, 终止重复循环的 预定条件可以是: 已经遍历了所有的上行分量载波,仍未能成功切换; 已经尝试的上行分量载波达到预定阔值, 仍未能成功切换。 则进入步骤 S402, 其中, 手机 20执行以下各项中的任一项, 来 从各上行分量载波中确定一个上行分量载波; - 从所述多个上行分量 载波中选择除所述主上行分量载波以外的与专用接入资源所对应的 上行载波; - 从所述多个上行分量载波除所述主上行分量载波以外的 各个上行分量载波中确定能够较早进行物理随机接入信道上的发送 和 /或对应于一个信道条件较优的下行分量载波的一个上行分量载波; - 从所述多个上行分量载波除所述主上行分量载波以外的各个上行 分量载波中随机确定一个上行分量载波。 不失一般性地, 如果第二管 理设备通知的切换命令中包含了专有接入资源, 则在相应的上行分量 载波上发送接入请求。
如果重新进行的切换仍未成功, 则重复执行步骤 S402-S404, 直 至切换成功或已遍历除主上行分量载波以外的所有其它上行分量载 波。 在遍历了所有其它上行分量载波仍不能成功切换之后, 可以直接 触发重连接, 也可以再次尝试主上行分量载波, 再次切换失败后再行 重连接。
如果重新进行的切换成功, 则基站 10 自动地将导致切换成功的 上行分量载波(主上行分量载波以外的另一上行分量载波)确定为新 的主上行分量载波。
在对用户终端中的方法的各个实施例进行了详细介绍之后, 再来 看在管理设备中用于对为一个用户终端配置的多个上行分量载波所 带的上行物理信道进行控制的方法。 通过以上的描述可以总结出, 该 方法包括以下步骤, 以基站 10和手机 20为例:
1 ) 判断手机 20是否在主上行分量载波以外的另一上行分量载 波所带的物理随机接入信道上发送请求消息并导致请求成功, 其中的 请求消息包括 SR发送失败时的随机接入请求以及在执行切换时发向 第二管理设备的相应的消息。
2 ) 如果所述用户终端在主上行分量载波以外的另一上行分量载 波所带的物理随机接入信道上发送请求消息并导致请求成功, 则将所 述另一上行分量确定为所述用户终端的主上行分量载波。 换言之, 基站 11收到手机 10发来的表示 SR发送失败的报告, 重新配置 UL PCC,或者,基站 11根据基站 11 自身的测量知道 UL PCC 的信道质量恶化, 于是自动重新配置 UL PCC, 例如为手机 10选择另 一个上行分量载波作为新的主上行分量载波。
具体的例子如, 在 SR发送失败的情形下, 手机 20通过主上行分 量载波以外的上行分量载波发送随机接入请求并成功后, 向基站 10 报告 SR发送失败, 于是, 基站 10将导致手机 20请求成功的那个上 行分量载波确定为新的主上行分量载波。具体的例子又如,在切换时, 如果通过主上行分量载波所进行的切换尝试成功, 则作为切换目的地 的第二管理设备自动地将导致切换成功的那一上行分量载波确定为 新的主上行分量载波。 在对方法部分做了详述之后, 以下参照上文对本发明的实施例提 供的第一 -第四装置的各实施例进行介绍, 可参考上文中的相关表述 以便理解。
参看图 5 , 其中示出了根据本发明一个具体实施例的在用户终端 中用于发送物理随机接入信道上的随机接入请求的第一装置的框图, 其中, 所述用户终端被配置了多个带有物理随机接入信道的上行分量 载波, 该第一装置 50典型地位于图 1所示的手机 20中, 包括:
第一单元 502, 用于确定判决随机接入失败的条件, 对应于图 2 所示步骤 S200;
第二单元 504, 用于根据所述判决随机接入失败的条件, 从所述 多个上行分量载波中确定一个上行分量载波, 对应于图 2 所示步骤 S202;
第一发送器 506, 用于在所确定的上行分量载波所带的物理随机 信道上向所述管理设备发送所述随机接入请求, 对应于图 2所示步骤 S204。
进一步地, 第一单元 502确定的判决随机接入失败的条件包括以 下各项中的任一项: I. 所述多个上行分量载波中包括一个主上行分量 载波, 如果在所述主上行分量载波所带的物理随机接入信道上发送的 随机接入请求未导致请求成功, 则判定所述用户终端的随机接入失 败; Π. 如果在所述多个上行分量载波中任一上行分量载波所带的物 理随机接入信道上发送的随机接入请求未导致请求成功, 则判定所述 用户终端的随机接入失败; III. 如果在所述多个上行分量载波中的所 有上行分量载波所带的物理随机接入信道上发送的随机接入请求均 未导致请求成功, 则判定所述用户终端的随机接入失败。
当判决随机接入失败的条件包括第 I项时,第二单元 502还用于: 在所述主上行分量载波所带的物理随机接入信道上发送所述随机接 入请求; 或者,
当多个上行分量载波分别具有与之相对应的激活的配对下行分 量载波, 且所述判决随机接入失败的条件包括所述第 II项时, 第二单 元 502用于执行以下各项操作中的任一项: 从所述多个上行分量载波 中确定对应于信道条件较优的下行分量载波的一个上行分量载波; 从 所述多个上行分量载波中随机地确定一个上行分量载波; 或者,
当所述多个上行分量载波分别具有与之相对应的激活的配对的 下行分量载波, 且所述判决随机接入失败的条件包括所述第 III项时, 第二单元 502用于执行以下各项操作中的任一项: 从所述多个上行分 量载波中确定能够较早进行物理随机接入信道上的发送和 /或对应于 一个信道条件较优的下行分量载波的一个上行分量载波; 从所述多个 上行分量载波中随机地确定一个上行分量载波。
进一步地, 第二单元 502和第一发送器 504还用于, 如果第一发 送器 504发送的随机接入请求未能导致请求成功, 则分别重复执行相 应操作, 直至请求成功或所述判决随机接入失败的条件被满足;
其中, 在重复执行相应操作时, 第二单元 502用于从多个上行分 量载波中剩余的上行分量载波中确定能够较早进行物理随机接入信 道上的发送和 /或对应于一个信道条件较优的下行分量载波的一个上 行分量载波。
应当理解, 所述第一单元 502不是必要的。 在一个变化例中, 第 二单元 504不依赖判决随机接入失败的条件而如上所述地随机或根据 信道条件来选择适当的上行分量载波。
参看图 6, 其中示出了根据本发明的一个具体实施例的在用户终 端中调度请求发送失败后发送随机接入请求的第二装置框图, 其中, 所述用户终端被配置了包括所述主上行分量载波在内的多个带有物 理随机接入信道的上行分量载波, 该第二装置 60典型地位于图 1 中 的用户终端 20中, 包括:
第三单元 602, 用于执行以下各项中的任一项, 来从所述多个上 行分量载波中确定一个上行分量载波, 对应于图 3所示步骤 S300;
- 从所述多个上行分量载波除所述主上行分量载波以外的各个 上行分量载波中确定能够较早进行物理随机接入信道上的发送和 /或 对应于一个信道条件较优的下行分量载波的一个上行分量载波;
- 从所述多个上行分量载波除所述主上行分量载波以外的各个 上行分量载波中随机确定一个上行分量载波;
第二发送器 604, 用于通过所确定的上行分量载波所带的物理随 机接入信道来发送该随机接入请求, 对应于图 3所示步驟 S302。
参看图 7, 其中示出了根据本发明的一个具体实施例的在用户终 端中用于从由一个第一管理设备的管辖切换至由一个第二管理设备 管辖的第三装置框图, 该第三装置 70典型地位于图 1 中的用户终端 20中, 包括:
接收器 702, 用于接收第二管理设备例如基站 11 发来的切换命 令, 其中包含多个带有物理随机接入信道的上行分量载波的相关信 息, 对应于图 4中的步骤 S400。
第四单元 704, 用于根据所述切换命令, 从所述多个上行分量载 波中确定一个上行分量载波, 对应于图 4中的步骤 S402。
第五单元 706,用于通过所确定的上行分量载波来执行所述切换, 对应于图 4所示的步驟 S404。
其中, 如果第五单元 706所执行的切换没有成功, 第四单元 704 和第五单元 706将重复执行相应操作直至切换成功或满足预定条件。 进一步地, 第四单元 706用于: 判断所述切换命令是否在所述多 个上行分量载波中标识了一个主上行分量载波, 如果所述切换命令在 所述多个上行分量载波中标识了一个主上行分量载波, 则将主上行分 量载波作为所确定的上行分量载波。
当通过主上行分量载波执行的切换没有成功时, 第四单元 704重 复执行的操作包括: 判断所述切换命令是否在所述多个上行分量载波 中标识了一个与专用接入资源所对应的上行分量载波, 以及如果所述 切换命令在所述多个上行分量载波中标识了一个与专用接入资源所 对应的上行分量载波, 则将所述与专用接入资源相对应的上行分量载 作为第四单元 704所确定的上行分量载波。
其中, 如果切换命令没有标识任何一个主上行分量载波, 或者, 虽然标识了主上行分量载波但通过该主上行分量载波进行的切换没 者, 虽然标识了与专用接入资源相对应的上行分量载波, 但通过该与 专用接入资源相对应的上行分量载波进行的切换也没有成功, 则, 第 四单元 704重复执行的操作包括以下各项中的任一项:
从未尝试的各个上行分量载波中确定能够较早进行物理随机接 入信道上的发送和 /或对应于一个信道条件较优的下行分量载波的一 个上行分量载波;
从未尝试的各个上行分量载波中随机确定一个上行分量载波。 参看图 8, 其中示出了根据本发明的一个具体实施例的在管理设 备中用于对为一个用户终端配置的多个上行分量载波所带的上行物 理信道进行控制的第四装置, 该第四装置 80典型地位于图 1所示基 站 10中, 包括:
判断装置 802, 用于判断所述用户终端是否在主上行分量载波以 外的另一上行分量载波所带的物理随机接入信道上发送请求消息并 导致请求成功;
第六单元 804, 用于如果所述用户终端在主上行分量载波以外的 另一上行分量载波所带的物理随机接入信道上发送请求消息并导致 请求成功, 则将所述另一上行分量确定为所述用户终端的主上行分量 载波。
对判断装置 802和第六单元 804的功能详述, 可参照上文中对方 法流程的描述。
需要说明的是, 上述实施例仅是示范性的, 而非对本发明的限制。 任何不背离本发明精神的技术方案均应落入本发明的保护范围之内, 这 包括使用在不同实施例中出现的不同技术特征, 调度方法可以进行组 合, 以取得有益效果。 此外, 不应将权利要求中的任何附图标记视为限 制所涉及的权利要求; "包括 "一词不排除其它权利要求或说明书中未列 出的装置或步骤; 装置前的 "一个" 不排除多个这样的装置的存在; 在 包含多个装置的设备中, 该多个装置中的一个或多个的功能可由同一个 硬件或软件模块来实现; "第一"、 "第二"、 "第三" 等词语仅用来表示名 称, 而并不表示任何特定的顺序。

Claims

权 利 要 求 书
1. 一种在用户终端中用于在物理随机接入信道上发送随机接入 请求的方法, 其中, 所述用户终端被配置了多个带有物理随机接入信 道的上行分量载波, 该方法包括如下步骤:
b. 执行以下各项操作中的一项,在所述多个上行分量载波中确定 一个上行分量载波,
- 从所述多个上行分量载波中随机地确定一个上行分量载波; - 从所述多个上行分量载波中具有信道条件较佳的激活配对激 活的配对下行分量载波的一个上行分量载波;
- 从所述多个上行分量载波中确定能够较早进行物理随机接入 信道上的发送的一个上行分量载波;
- 确定作为主上行分量载波的一个上行分量载波;
c 在所确定的上行分量载波所带的物理随机信道上向所述管理 设备发送所述随机接入请求。
2. 根据权利要求 1所述的方法, 其中, 在所述步骤 b之前, 还包 括:
a. 确定判决随机接入失败的条件;
b. 执行与所述判决随机接入失败的条件相匹配的操作,从所述多 个上行分量载波中确定一个上行分量载波;
L 所述多个上行分量载波中包括一个主上行分 载波,、如果在所 述主上行分量载波所带的物理随机接入信道上发送的随机接入请求 未导致请求成功, 则判定所述用户终端的随机接入失败;
II. 如果在所述多个上行分量载波中任一上行分量载波所带的物 理随机接入信道上发送的随机接入请求未导致请求成功, 则判定所述 用户终端的随机接入失败;
III. 如果在所述多个上行分量载波中的所有上行分量载波所带的 物理随机接入信道上发送的随机接入请求均未导致请求成功, 则判定 所述用户终端的随机接入失败;
IV. 如果在所述多个上行分量载波中的所有具有激活的配对下行 分量载波的上行分量载波所带的物理随机接入信道上发送的随机接 入请求均未导致请求成功, 则判定所述用户终端的随机接入失败。
其中,
当所述判决随机接入失败的条件包括所述第 I项时, 所述步骤 b 包括: 确定作为主上行分量载波的一个上行分量载波;
或者,
当所述判决随机接入失败的条件包括所述第 II项时, 所述步骤 b 包括, 执行以下各项操作中的任一项:
从所述多个上行分量载波中确定具有信道条件较佳的激活的配 对下行分量载波的一个上行分量载波;
从所述多个上行分量载波中随机地确定一个上行分量载波; 或者,
当所述判决随机接入失败的条件包括所述第 III项时,所述步骤 b 包括, 执行以下各项操作中的任一项:
从所述多个上行分量载波中确定能够较早进行物理随机接入信 道上的发送和 /或具有信道条件较佳的激活的配对下行分量载波的一 个上行分量载波;
从所述多个上行分量载波中随机确定一个上行分量载波; 或者,
当所述判决随机接入失败的条件包括所述第四项时, 所述步骤 b 包括:
从所述多个上行分量载波中的所有具有激活的配对下行分量载 波的上行分量载波中确定具有信道条件较佳的激活的配对下行分量 载波的一个上行分量载波。
3. 根据权利要求 2所述的方法, 其中, 该方法还包括以下步骤: 当所述判决接入失败的条件包括所述第 III或第 IV项时,如果所 述步骤 c中发送的所述随机接入请求未能导致请求成功, 则重复执行 所述步骤 b-c直至请求成功或所述判决随机接入失败的条件被满足; 其中, 当所述判决接入失败的条件包括所述第 III项时, 重复执 行的步骤 b包括执行以下各项中的任一项:
从其余的各个上行分量载波中确定能够较早进行物理随机接入 信道上的发送和 /或对应于一个信道条件较优的激活的配对下行分量 载波的一个上行分量载波;
从所述多个上行分量载波中剩余的上行分量载波中随机确定一 个上行分量载波;
其中, 当所述判决接入失败的条件包括所述第 IV项时, 重复执 行的步骤 b包括:
从其余的各个具有激活的配对下行分量载波的上行分量载波中 确定具有信道条件较佳的激活的配对下行分量载波的一个上行分量 载波。
4. 一种在用户终端中在调度请求发送失败后发送随机接入请求 的方法, 其中, 所述用户终端被配置了多个带有物理随机接入信道的 上行分量载波, 该方法包括以下步骤:
A. 执行以下各项中的任一项, 来从所述多个上行分量载波中确 定一个上行分量载波;
- 从所述多个上行分量载波除所述主上行分量载波以外的各个 上行分量载波中确定能够较早进行物理随机接入信道上的发送和 /或 对应于一个信道条件较优的下行分量载波的一个上行分量载波;
- 从所述多个上行分量载波除所述主上行分量载波以外的各个 上行分量载波中随机确定一个上行分量载波;
B. 通过所确定的上行分量载波所带的物理随机接入信道来发送 该随机接入请求。
5. 根据权利要求 4所述的方法, 其中, 还包括以下步骤:
- 当所述步骤 B中发送的随机接入请求未导致请求成功时, 重复 执行所述步骤 A-B, 直至请求成功或已遍历除所述多个上行分量载波 中除所述主上行分量载波以外的所有上行分量载波; 其中, 如果所述用户终端通过所述主上行分量载波以外的一个上 行分量载波发送的随机接入请求导致请求成功, 则向所述管理设备报 告调度请求发送失败。
6. 一种在用户终端中用于从由一个第一管理设备的管辖切换至 由一个第二管理设备管辖的方法, 包括以下步骤:
1. 接收所述第二管理设备发来的切换命令,其中包含多个带有物 理随机接入信道的上行分量载波的相关信息;
m. 根据所述切换命令, 从所述多个上行分量载波中确定一个上 行分量载波;
n. 通过所确定的上行分量载波来执行所述切换;
如果所述步骤 n 中执行的切换没有成功, 则重复执行所述步骤 m-n直至切换成功或满足预定条件。
7. 根据权利要求 6所述的方法, 其中, 所述步骤 m包括: 判断所述切换命令是否在所述多个上行分量载波中标识了一个 主上行分量载波;
如果所述切换命令在所述多个上行分量载波中标识了一个主上 行分量载波,则将所述主上行分量载波作为步骤 m中所确定的上行分 量载波;
当通过主上行分量载波执行的切换没有成功时, 重复执行的步骤 m包括:
判断所述切换命令是否在所述多个上行分量载波中标识了一个 与专用接入资源相对应的上行分量载波;
如果所述切换命令在所述多个上行分量载波中标识了一个与专 用接入资源相对应的上行分量载波, 则将所述与专用接入资源相对应 的上行分量载作为步骤 m中所确定的上行分量载波;
其中, 如果切换命令没有标识任何一个主上行分量载波, 或者, 虽然标识了主上行分量载波但通过该主上行分量载波进行的切换没 者, 虽然标识了与专用接入资源相对应的上行分量载波, 但通过该与 专用接入资源相对应的上行分量载波进行的切换也没有成功, 则, 重 复执行的步骤 m包括以下各项中的任一项:
从未尝试的各个上行分量载波中确定能够较早进行物理随机接 入信道上的发送和 /或对应于一个信道条件较优的下行分量载波的一 个上行分量载波;
从未尝试的各个上行分量载波中随机确定一个上行分量载波。
8. 一种在管理设备中用于对为一个用户终端配置的多个上行分 量载波所带的上行物理信道进行控制的方法, 包括以下步骤:
判断所述用户终端是否在主上行分量载波以外的另一上行分量 载波所带的物理随机接入信道上发送请求消息并导致请求成功;
如果所述用户终端在主上行分量载波以外的另一上行分量载波 所带的物理随机接入信道上发送请求消息并导致请求成功, 则将所述 另一上行分量确定为所述用户终端的主上行分量载波。
9. 一种在用户终端中用于在物理随机接入信道上发送随机接入 请求的第一装置, 其中, 所述用户终端被配置了多个带有物理随机接 入信道的上行分量载波, 该第一装置包括:
第二单元, 用于执行以下各项操作中的一项, 在所述多个上行分 量载波中确定一个上行分量载波,
- 从所述多个上行分量载波中随机地确定一个上行分量载波; - 从所述多个上行分量载波中具有信道条件较佳的激活的配对 下行分量载波的一个上行分量载波;
- 从所述多个上行分量载波中确定能够较早进行物理随机接入 信道上的发送的一个上行分量载波;
- 确定作为主上行分量载波的一个上行分量载波;
第一发送器, 用于在所述第二单元确定的上行分量载波所带的物 理随机信道上向所述管理设备发送所述随机接入请求。
10. 根据权利要求 9所述的第一装置, 其中, 还包括:
第一单元, 用于确定判决随机接入失败的条件;
所述第二单元还用于, 执行与所述第一单元所确定的判决随机接 入失败的条件相匹配的操作, 从所述多个上行分量载波中确定一个上 行分量载波;
I. 所述多个上行分量载波中包括一个主上行分量载波,如果在所 述主上行分量载波所带的物理随机接入信道上发送的随机接入请求 未导致请求成功, 则判定所述用户终端的随机接入失败;
II. 如果在所述多个上行分量载波中任一上行分量载波所带的物 理随机接入信道上发送的随机接入请求未导致请求成功, 则判定所述 用户终端的随机接入失败;
III. 如果在所述多个上行分量载波中的所有上行分量载波所带的 物理随机接入信道上发送的随机接入请求均未导致请求成功, 则判定 所述用户终端的随机接入失败;
IV. 如果在所述多个上行分量载波中的所有具有激活的配对下行 载波的上行分量载波所带的物理随机接入信道上发送的随机接入请 求均未导致请求成功, 则判定所述用户终端的随机接入失败。
其中, 当所述判决随机接入失败的条件包括所述第 I项时, 所述 第二单元还用于: 确定作为主上行分量载波的一个上行分量载波; 或者,
当所述判决随机接入失败的条件包括所述第 II项时,所述第二单 元用于执行以下各项操作中的任一项: 从所述多个上行分量载波中确 定具有信道条件较佳的激活的配对下行分量载波的一个上行分量载 波; 从所述多个上行分量载波中随机地确定一个上行分量载波;
或者,
当所述判决随机接入失败的条件包括所述第 III项时, 所述第二 单元用于执行以下各项操作中的任一项: 从所述多个上行分量载波中 确定能够较早进行物理随机接入信道上的发送和 /或具有信道条件较 佳的激活的配对下行分量载波的一个上行分量载波; 从所述多个上行 分量载波中随机地确定一个上行分量载波; 当所述判决随机接入失败的条件包括所述第四项时, 所述步骤 b 包括:
从所述多个上行分量载波中的所有具有激活的配对下行分量载 波的上行分量载波中确定具有信道条件较佳的激活的配对下行分量 载波的一个上行分量载波。
11. 根据权利要求 10所述的第一装置, 其中, 所述第二单元和所 述第一发送器还用于, 如果所述第一发送器发送的所述随机接入请求 未能导致请求成功, 则分别重复执行相应操作, 直至请求成功或所述 判决随机接入失败的条件被满足;
其中, 在重复执行相应操作时, 所述第二单元用于执行以下各项 中的任一项:
从所述多个上行分量载波中剩余的上行分量载波中确定能够较 早进行物理随机接入信道上的发送和 /或对应于一个信道条件较优的 下行分量载波的一个上行分量载波;
从所述多个上行分量载波中剩余的上行分量载波中随机确定一 个上行分量载波。
12. 一种在用户终端中在调度请求发送失败后发送随机接入请求 的第二装置, 其中, 所述用户终端被配置了包括所述主上行分量载波 在内的多个带有物理随机接入信道的上行分量载波, 该第二装置包 括:
第三单元, 用于执行以下各项中的任一项, 来从所述多个上行分 量载波中确定一个上行分量载波;
- 从所述多个上行分量载波除所述主上行分量载波以外的各个 上行分量载波中确定能够较早进行物理随机接入信道上的发送和 /或 对应于一个信道条件较优的下行分量载波的一个上行分量载波;
- 从所述多个上行分量载波除所述主上行分量载波以外的各个 上行分量载波中随机确定一个上行分量载波;
第二发送器, 用于通过所确定的上行分量载波所带的物理随机接 入信道来发送所述随机接入请求。
13. —种在用户终端中用于从由一个第一管理设备的管辖切换至 由一个第二管理设备管辖的第三装置, 包括:
接收器, 用于接收所述第二管理设备发来的切换命令, 其中包含 多个带有物理随机接入信道的上行分量载波的相关信息;
第四单元, 用于根据所述切换命令, 从所述多个上行分量载波中 确定一个上行分量载波;
第五单元, 用于通过所确定的上行分量载波来执行所述切换; 其中, 如果所述第五单元所执行的切换没有成功, 所述第四、 第 五单元将重复执行相应操作直至切换成功或满足预定条件。
14. 根据权利要求 13所述的第三装置, 其中,
所述第四单元用于: 判断所述切换命令是否在所述多个上行分量 载波中标识了一个主上行分量载波, 如果所述切换命令在所述多个上 行分量载波中标识了一个主上行分量载波, 则将所述主上行分量载波 作为步骤 m中所确定的上行分量载波;
当通过主上行分量载波执行的切换没有成功时, 所述第四单元重 复执行的操作包括: 判断所述切换命令是否在所述多个上行分量载波 中标识了一个与专用接入资源所对应的上行分量载波, 以及如果所述 切换命令在所述多个上行分量载波中标识了一个与专用接入资源所 对应的上行分量载波, 则将所述与专用接入资源相对应的上行分量载 作为所述第四单元所确定的上行分量载波;
其中, 如果切换命令没有标识任何一个主上行分量载波, 或者, 虽然标识了主上行分量载波但通过该主上行分量载波进行的切换没 者, 虽然标识了与专用接入资源相对应的上行分量载波, 但通过该与 专用接入资源相对应的上行分量载波进行的切换也没有成功, 则, 所 述第四单元重复执行的操作包括以下各项中的任一项:
从未尝试的各个上行分量载波中确定能够较早进行物理随机接 入信道上的发送和 /或对应于一个信道条件较优的下行分量载波的一 个上行分量载波; 从未尝试的各个上行分量载波中随机确定一个上行分量载波。
15. 一种在管理设备中用于对为一个用户终端配置的多个上行分 量载波所带的上行物理信道进行控制的第四装置, 包括:
判断装置, 用于判断所述用户终端是否在主上行分量载波以外的 另一上行分量载波所带的物理随机接入信道上发送请求消息并导致 请求成功;
第六单元, 用于如果所述用户终端在主上行分量载波以外的另一 上行分量载波所带的物理随机接入信道上发送请求消息并导致请求 成功, 则将所述另一上行分量确定为所述用户终端的主上行分量载 波。
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