WO2019206101A1 - 一种随机接入竞争解决的方法和装置 - Google Patents

一种随机接入竞争解决的方法和装置 Download PDF

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Publication number
WO2019206101A1
WO2019206101A1 PCT/CN2019/083746 CN2019083746W WO2019206101A1 WO 2019206101 A1 WO2019206101 A1 WO 2019206101A1 CN 2019083746 W CN2019083746 W CN 2019083746W WO 2019206101 A1 WO2019206101 A1 WO 2019206101A1
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mac
length
communication device
ccch sdu
random access
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PCT/CN2019/083746
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English (en)
French (fr)
Inventor
许斌
李秉肇
肖潇
曹振臻
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华为技术有限公司
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Publication of WO2019206101A1 publication Critical patent/WO2019206101A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present application relates to the field of communications, and in particular, to a method and apparatus for random access contention resolution.
  • a preamble may be selected from the resource pool and sent to the base station. Due to the randomness of the selection, different UEs may select the same preamble to send to the base station, so that different UEs receive the same random access response (RAR) sent by the base station. Different UEs can use the uplink resource indicated by the uplink grant to send the message III, which may cause random access conflicts of different UEs. In order to resolve the conflict, different UEs may carry a common control channel service data unit (CCCH SDU) in the third message and send the message to the base station. The CCCH SDU may be used to distinguish different UEs.
  • CCCH SDU common control channel service data unit
  • the base station After receiving the message 3 sent by different UEs, the base station selects one of the message 3s and carries the CCCH SDU of the message 3 as a medium access control control element (MAC CE) in the message 4. And send message four to different UEs. After receiving the message four, each UE in the different UEs compares the MAC CE with the CCCH SDU in the third message. If they are consistent, the random access competition is determined to be successful. If the inconsistency is determined, the random access competition fails.
  • MAC CE medium access control control element
  • the base station may intercept the CCCH SDU and carry the truncated CCCH SDU as a MAC CE in the message four and send it to each UE.
  • the same situation may occur after the CCCH SDUs of different UEs are truncated.
  • different UEs consider that the contention is successful. Therefore, random access of different user equipments is confused in the contention resolution process.
  • the embodiments of the present application provide a method and apparatus for random access contention resolution, which can reduce the probability of confusion of different communication devices (such as user equipments) in a contention resolution process of random access.
  • the embodiment of the present application provides a method for random access contention, which includes: a communication device receives a message sent by a network device in a random access process, and a message 4 includes a MAC CE, and the MAC CE is used for random access.
  • the contention of the MAC CE is a variable; the communication device determines whether the random access competition of the communication device is successful according to the MAC CE.
  • the length of the MAC CE is a variable, and different communication devices can correspond to MAC CEs of different lengths, so that the communication device can determine whether the random access competition of the communication device is successfully solved according to the length of the MAC CE, so that, The network device does not need to truncate the CCCH SDU, and avoids confusion after the CCCH SDU of multiple communication devices is truncated (that is, multiple truncated CCCH SDUs are the same), which can reduce the competition resolution of different communication devices in random access. The probability of confusion.
  • the method before the communication device receives the message four sent by the network device in the random access process, the method further includes: the communication device sends a message three to the network device, the message three includes a CCCH SDU; and the communication device according to the MAC Determining whether the random access competition resolution of the communication device is successful includes: the communication device determines whether the parameter of the MAC CE matches the parameter of the CCCH SDU; when the communication device determines that the parameter of the MAC CE does not match the parameter of the CCCH SDU, the communication device determines the communication The device random access competition resolution fails; wherein the parameters of the MAC CE include the length and/or type of the MAC CE, and the parameters of the CCCH SDU include the length and/or the cause value of the CCCH SDU.
  • the communication device determines that the parameters of the MAC CE do not match the parameters of the CCCH SDU, the communication device determines that the random access competition of the communication device fails to be resolved, and does not need to further compare the specific contents of the MAC CE and the CCCH SDU, thereby reducing the interpretation of the communication device. Competition resolves the complexity of the results.
  • the method further includes: when the communications device determines that the parameter of the MAC CE matches the parameter of the CCCH SDU, the communications device determines whether the content of the MAC CE includes all the content of the CCCH SDU; if the communications device determines the MAC The content of the CE includes all the contents of the CCCH SDU, and the communication device determines that the random access competition of the communication device is successfully solved. If the communication device determines that the content of the MAC CE does not include all the contents of the CCCH SDU, the communication device determines that the random access competition of the communication device fails to be resolved.
  • the length of the MAC CE is the same as the length of the CCCH SDU, or the length of the MAC CE is greater than the length of the CCCH SDU.
  • the network device does not need to truncate the CCCH SDU, and avoids confusion after the CCCH SDU of multiple communication devices is truncated, which can reduce the probability of confusion of different communication devices in the random access competition resolution process.
  • the length of the MAC CE is an integer multiple of a preset value, and the preset value is determined according to the number of bits of the bit included in one byte.
  • the preset value may be 8, that is, the length of the MAC CE is an integer multiple of 8, which is convenient for the communication device to parse the MAC CE.
  • the MAC CE subheader includes first indication information, where the first indication information is used to indicate the length or type of the MAC CE, and the type of the MAC CE is related to the length of the MAC CE.
  • the communication device can determine the length or type of the MAC CE according to the first indication information, and does not need to read all the bits of the MAC CE, thereby reducing the complexity of the communication device interpreting the contention resolution result.
  • the first indication information is located in a reserved domain or a logical channel identification (LCID) domain or an extended domain in a MAC CE subheader.
  • LCID logical channel identification
  • the format of the MAC CE subheader is not modified, and the current communication system can be better adapted.
  • the embodiment of the present application provides a communication device, including: a sending unit, configured to receive a message sent by a network device in a random access process, the message 4 includes a MAC CE, and the MAC CE is used for random access competition resolution.
  • the length of the MAC CE is a variable, and the determining unit is configured to determine, according to the MAC CE, whether the random access competition of the communication device is successfully solved.
  • the sending unit is further configured to: send a message to the network device, the message 3 includes a CCCH SDU, and the determining unit is configured to: determine whether the parameter of the MAC CE matches the parameter of the CCCH SDU; when determining the MAC CE If the parameters of the CCCH SDU do not match the parameters of the CCCH SDU, it is determined that the random access competition of the communication device fails to be resolved; wherein the parameters of the MAC CE include the length and/or type of the MAC CE, and the parameters of the CCCH SDU include the length and/or the reason of the CCCH SDU. value.
  • the determining unit is further configured to: when determining that the parameter of the MAC CE matches the parameter of the CCCH SDU, determine whether the content of the MAC CE includes all the content of the CCCH SDU; if determining that the content of the MAC CE includes the CCCH The entire content of the SDU is determined to be successful in the random access competition of the communication device. If it is determined that the content of the MAC CE does not include all the contents of the CCCH SDU, it is determined that the random access competition of the communication device fails to be resolved.
  • the length of the MAC CE is the same as the length of the CCCH SDU, or the length of the MAC CE is greater than the length of the CCCH SDU.
  • the length of the MAC CE is an integer multiple of a preset value, and the preset value is determined according to the number of bits of the bit included in one byte.
  • the MAC CE subheader includes first indication information, where the first indication information is used to indicate the length or type of the MAC CE, and the type of the MAC CE is related to the length of the MAC CE.
  • the first indication information is located in a reserved domain or an LCID domain or an extended domain in a MAC CE subheader.
  • an embodiment of the present invention provides a device, which is in the form of a product of a chip.
  • the device includes a processor and a memory, and the memory is coupled to the processor to save necessary program instructions of the device. And data, the processor for executing program instructions stored in the memory such that the apparatus performs the functions of the communication device in the above method.
  • the embodiment of the present invention provides a communication device, which can implement the functions performed by the communication device in the foregoing method embodiments, and the functions can be implemented by using hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the communication device includes a processor and a communication interface configured to support the communication device to perform the corresponding functions of the above methods.
  • the communication interface is used to support communication between the communication device and other network elements.
  • the communication device can also include a memory for coupling with the processor that retains the program instructions and data necessary for the communication device.
  • an embodiment of the present invention provides a computer readable storage medium, comprising instructions, when executed on a computer, causing a computer to perform any one of the methods provided by the first aspect.
  • an embodiment of the present invention provides a computer program product comprising instructions that, when run on a computer, cause the computer to perform any of the methods provided by the first aspect.
  • the embodiment of the present application provides a method for random access competition resolution, including: a network device receives a message 3 sent by at least one communication device in a random access procedure, a message 3 includes a CCCH SDU; and the network device includes at least one A target communication device is determined in the communication device; the network device determines the MAC CE according to the CCCH SDU in the message 3 sent by the target communication device, and the MAC CE is used for random access competition resolution, and the length of the MAC CE is a variable.
  • the length of the MAC CE may be a variable according to the CCCH SDU, and different communication devices may correspond to different CCCH SDUs, so that the network device does not need to truncate the CCCH SDU, and the CCCH SDU of multiple UEs is not shortened.
  • confusion ie, multiple truncated CCCH SDUs are the same
  • the probability of confusion of different communication devices in the contention resolution process of random access can be reduced.
  • the determining, by the network device, the MAC CE according to the CCCH SDU in the message 3 sent by the target communication device includes: determining, by the network device, the parameter of the MAC CE according to the parameter of the CCCH SDU in the message 3 sent by the target communication device;
  • the parameters of the MAC CE include the length and/or type of the MAC CE, and the parameters of the CCCH SDU include the length and/or the cause value of the CCCH SDU.
  • the length of the MAC CE is the same as the length of the CCCH SDU, or the length of the MAC CE is greater than the length of the CCCH SDU in the third message sent by the target communication device.
  • the length of the MAC CE is an integer multiple of a preset value, and the preset value is determined according to the number of bits of the bit included in one byte.
  • the preset value may be 8, that is, the length of the MAC CE is an integer multiple of 8, which is convenient for the communication device to parse the MAC CE.
  • the MAC CE subheader includes first indication information, where the first indication information is used to indicate the length or type of the MAC CE, and the type of the MAC CE is related to the length of the MAC CE.
  • the communication device can determine the length or type of the MAC CE according to the first indication information, and does not need to read all the bits of the MAC CE, thereby reducing the complexity of the communication device interpreting the contention resolution result.
  • the first indication information is located in a reserved domain or an LCID domain or an extended domain in a MAC CE subheader.
  • the format of the MAC CE subheader is not modified, and the current communication system can be better adapted.
  • the embodiment of the present application provides a network device, including: a receiving unit, configured to receive a message 3 sent by at least one communication device in a random access procedure, a message 3 includes a CCCH SDU, and a determining unit, configured to Determining a target communication device in a communication device; the determining unit is further configured to determine a MAC CE according to the CCCH SDU in the message 3 sent by the target communication device, where the MAC CE is used for random access contention resolution, and the length of the MAC CE is a variable.
  • the determining unit is configured to: determine a parameter of the MAC CE according to a parameter of the CCCH SDU in the message three sent by the target communication device; where the parameter of the MAC CE includes the length and/or type of the MAC CE
  • the parameters of the CCCH SDU include the length and/or cause value of the CCCH SDU.
  • the length of the MAC CE is the same as the length of the CCCH SDU, or the length of the MAC CE is greater than the length of the CCCH SDU in the third message sent by the target communication device.
  • the length of the MAC CE is an integer multiple of a preset value, and the preset value is determined according to the number of bits of the bit included in one byte.
  • the MAC CE subheader includes first indication information, where the first indication information is used to indicate the length or type of the MAC CE, and the type of the MAC CE is related to the length of the MAC CE.
  • the first indication information is located in a reserved domain or an LCID domain or an extended domain in a MAC CE subheader.
  • the embodiment of the present invention provides a network device, where the network device can implement the functions performed by the network device in the foregoing method, and the function can be implemented by using hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the network device includes a processor and a communication interface configured to support the network device to perform corresponding functions in the above methods.
  • the communication interface is used to support communication between the network device and other network elements.
  • the network device can also include a memory for coupling with the processor that holds the necessary program instructions and data for the network device.
  • an embodiment of the present invention provides a computer readable storage medium, including instructions, when executed on a computer, causing a computer to perform any one of the methods provided by the seventh aspect.
  • an embodiment of the present invention provides a computer program product comprising instructions, which when executed on a computer, cause the computer to perform any of the methods provided by the seventh aspect.
  • FIG. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram 1 of signal interaction of a method for random access competition resolution according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a format of a MAC CE subheader according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram 2 of signal interaction of a method for random access competition resolution according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a format of a UE ID according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram 1 of a communication device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram 2 of a communication device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram 3 of a communication device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram 4 of a communication device according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram 1 of a network device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram 2 of a network device according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • the embodiments of the present application provide a method and apparatus for random access competition resolution, which are applied to various wireless communication systems.
  • the embodiment of the present application can be applied to a process of random access competition resolution in a long term evolution (LTE) or a universal mobile telecommunications system (UMTS).
  • LTE long term evolution
  • UMTS universal mobile telecommunications system
  • a schematic diagram of a communication system architecture includes a network device (for example, a base station) and a plurality of communication devices (for example, the terminal device 1 and the terminal device 2).
  • the base station is configured to receive the message 3 sent by the terminal device in the random access procedure, and the message 3 includes the CCCH SDU.
  • the base station determines the MAC CE for the random access contention resolution according to the CCCH SDU. It should be noted that the length of the MAC CE is a variable.
  • the base station sends a message four to the terminal device, and the message four includes the MAC CE.
  • each of the plurality of terminal devices may determine whether the random access contention resolution of the terminal device is successful according to the MAC CE in the message 4.
  • the network device can be a base station, and the base station can be a device that can communicate with the terminal device.
  • the base station can be a relay station or an access point or the like.
  • the base station may be a base transceiver station (BTS) in a global system for mobile communication (GSM) or a code division multiple access (CDMA) network, or may be a broadband code division.
  • the NB (NodeB) in the wideband code division multiple access (WCDMA) may also be an eNB or an eNodeB (evolutional NodeB) in LTE.
  • the base station may also be a wireless controller in a cloud radio access network (CRAN) scenario.
  • the base station may also be a base station in a 5G network or a base station in a future evolved network.
  • the communication device can be a terminal device, which can be a terminal device that provides voice and/or other service data connectivity to the user, or a handheld device with wireless connectivity, or other processing device connected to the wireless modem. It can be a portable, pocket-sized, computer-built or in-vehicle mobile device, or it can be a personal communication service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, or a wireless local loop. (wireless local loop, WLL) station, personal digital assistant (PDA) and other devices are not limited herein.
  • PCS personal communication service
  • WLL wireless local loop
  • PDA personal digital assistant
  • a first embodiment of the present application provides a method for random access competition resolution, where the communication device is a terminal device, and the network device is a base station as an example. As shown in FIG. 2, the method includes:
  • the terminal device sends a preamble to the base station, where the preamble is used to request random access.
  • Multiple terminal devices can request random access to the base station through the same preamble.
  • the terminal device 1 and the terminal device 2 can request random access to the base station through the same preamble.
  • the base station sends a random access response to the terminal device, where the random access response includes uplink authorization information.
  • the base station receives the preamble transmitted by the terminal device. Then, the base station sends a random access response to the terminal device according to the preamble sent by the terminal device.
  • the size of the uplink resource indicated by the uplink grant information carried in the random access response may have different specifications in different communication systems.
  • the protocol specifies that the uplink resource indicated by the uplink grant information carried in the random access response has a minimum of 56 bits, that is, the base station can allocate any uplink resource that is greater than or equal to 56 bits for the terminal device.
  • the terminal device sends a message III to the base station in a random access procedure, where the message 3 includes a CCCH SDU.
  • the terminal device receives the random access response sent by the base station, and sends a message III to the base station according to the uplink resource indicated by the uplink grant information in the random access response.
  • the message three may include an 8-bit MAC sub-header and a 48-bit CCCH SDU.
  • the CCCH SDU may include (carry) a 3-bit or 4-bit cause value, a 4-bit coding overhead, and a 40 or 41-bit UE ID.
  • the cause value includes 4 bits; when the UE ID includes 41 bits, the cause value includes 3 bits.
  • the reason value can be used to indicate the length of the CCCH SDU. Exemplarily, as shown in Table 1, in different scenarios, that is, when the RRC message types are different, the content included in the UE ID may be different.
  • the C-RNTI is a Cell Radio Network Temporary Identify of the terminal device in the cell wireless network.
  • the short MAC-I is a short message authentication code for Integrity.
  • the resume ID is the recovery ID.
  • PCI is a physical cell ID.
  • the S-TMSI is a temporary UE identification number (SAE-Temporary Mobile Subscriber Identity).
  • different terminal devices may send message three to the base station in the same uplink resource.
  • the base station receives message 3 sent by at least one terminal device in a random access procedure, and message 3 includes a CCCH SDU.
  • the base station may receive the message three sent by the at least one terminal device on the same uplink resource.
  • the base station determines a target terminal device from the at least one terminal device.
  • the base station After receiving the message 3 sent by the at least one terminal device, the base station selects one of the terminal devices as the target terminal device, and the target terminal device, that is, the terminal device that the base station responds to.
  • the base station determines a MAC CE according to the CCCH SDU in the third message sent by the target terminal device, where the MAC CE is used for random access competition resolution.
  • the length of the MAC CE is a variable. In one possible design, the length of the MAC CE may be a variable determined according to the length of the CCCH SDU. The length of the MAC CE is greater than or equal to two.
  • the length of the MAC CE is the same as the length of the CCCH SDU. For example, if the length of the CCCH SDU corresponding to the target terminal device is 48 bits, the length of the MAC CE may be 48 bits. If the length of the CCCH SDU corresponding to the target terminal device is 56 bits, the length of the MAC CE may be 56 bits.
  • the length of the MAC CE is greater than the length of the CCCH SDU.
  • the content of the MAC CE may include the content of the CCCH SDU and a certain number of padding bits, and the number of padding bits included in the MAC CE may be determined according to the number of padding bits included in the message 3 sent by the target terminal device.
  • the content of the MAC CE may include the content of the CCCH SDU and the partially redundant bits to ensure that the length of the MAC CE is an integer multiple of the preset value.
  • the preset value is determined according to the number of bits of the bit included in one byte.
  • the preset value can be 8. Assuming that the length of the CCCH SDU is 54 bits and the preset value is 8, the content of the MAC CE may include 48 bits and 2 redundant bits of the CCCH SDU, that is, 56 bits, thereby ensuring that the length of the MAC CE is an integer multiple of 8. In order to facilitate the UE to parse the MAC CE.
  • the MAC CE subheader includes first indication information, and the first indication information is used to indicate the length or type of the MAC CE.
  • the type of MAC CE is related to the length of the MAC CE.
  • the length of the MAC CE is related to the length of the CCCH SDU in message three sent by the target terminal device. For example, it is assumed that the length of the CCCH SDU corresponding to the target terminal device is 48 bits, the length of the MAC CE may be 48 bits, and the type of the MAC CE may be type A. It is assumed that the length of the CCCH SDU corresponding to the target terminal device is 56 bits, and the type of the MAC CE may be the B type. In this way, the terminal device can determine the length or type of the MAC CE according to the first indication information, and does not need to read all the bits of the MAC CE, thereby reducing the complexity of the terminal device interpreting the contention resolution result.
  • the first indication information may be located in a reserved domain or an LCID domain or an extended domain in a MAC CE subheader.
  • the extended domain can be a new one in the MAC CE subheader.
  • the base station sends a message four to the terminal device, where the message four includes a MAC CE.
  • the terminal device determines, according to the MAC CE, whether the random access competition of the terminal device is resolved successfully.
  • the terminal device receives the message 4 sent by the base station, and determines whether the parameter of the MAC CE in the message 4 matches the parameter of the CCCH SDU carried in the message 3 sent by the UE, wherein the parameter of the MAC CE includes the length and/or type of the MAC CE.
  • the parameters of the CCCH SDU include the length and/or cause value of the CCCH SDU.
  • the terminal device determines that the terminal device random access competition resolution fails.
  • the terminal device determines that the length of the MAC CE is less than the length of the CCCH SDU
  • the terminal device determines that the terminal device random access competition resolution fails.
  • the terminal device determines that the length of the MAC CE does not match the cause value in the CCCH SDU, that is, the terminal device determines that the length of the MAC CE is less than the length indicated by the cause value in the CCCH SDU, the terminal device determines that the terminal device randomly accesses the contention. Resolve the failure.
  • the terminal device determines that the terminal device random access competition resolution fails. Or, when the terminal device determines that the type of the MAC CE does not match the cause value in the CCCH SDU, that is, the terminal device determines that the length of the type indication of the MAC CE is less than the length indicated by the cause value in the CCCH SDU, the terminal device determines that the terminal device is random. Access competition resolution failed.
  • the terminal device determines whether the content of the MAC CE includes all the contents of the CCCH SDU.
  • the terminal device determines that the length of the MAC CE is greater than or equal to the length of the CCCH SDU.
  • the terminal device determines that the parameters of the MAC CE match the parameters of the CCCH SDU.
  • the terminal device determines that the length of the MAC CE matches the cause value in the CCCH SDU, that is, the terminal device determines that the length of the MAC CE is greater than or equal to the length indicated by the cause value in the CCCH SDU, the terminal device determines the parameter of the MAC CE and The parameters of the CCCH SDU match.
  • the terminal device determines that the type of the MAC CE matches the length of the CCCH SDU, that is, the terminal device determines that the length of the type indication of the MAC CE is greater than or equal to the length of the CCCH SDU, the terminal device determines the parameters of the MAC CE and the parameters of the CCCH SDU. match.
  • the terminal device determines that the type of the MAC CE matches the cause value in the CCCH SDU, that is, the terminal device determines that the length of the type indication of the MAC CE is greater than or equal to the length indicated by the cause value in the CCCH SDU, the terminal device determines the MAC CE.
  • the parameters match the parameters of the CCCH SDU. Then, the terminal device determines whether the content of the MAC CE includes all the contents of the CCCH SDU.
  • the terminal device determines that the content of the MAC CE is the same as the entire content of the CCCH SDU, or the terminal device determines that the first M-bit of the MAC CE is the same as the entire content of the CCCH SDU, the terminal device determines that the content of the MAC CE includes all the contents of the CCCH SDU. If the terminal device determines that the content of the MAC CE is not completely the same as the entire content of the CCCH SDU, or the terminal device determines that the first M-bit of the MAC CE is not completely the same as the entire content of the CCCH SDU, the terminal device determines that the content of the MAC CE does not include the CCCH SDU. The entire content. Where M is a positive integer less than or equal to N.
  • the terminal device determines that the terminal device random access competition resolution is successful; when the terminal device determines that the content of the MAC CE does not include all the contents of the CCCH SDU, the terminal device determines the terminal device.
  • the random access competition resolution failed.
  • the length of the MAC CE is a variable, and different terminal devices can correspond to MAC CEs of different lengths, so that the terminal device can determine whether the random access competition of the terminal device is successfully solved according to the length of the MAC CE, so that, The base station does not need to truncate the CCCH SDU to avoid confusion when the CCCH SDUs of multiple UEs are truncated (that is, multiple truncated CCCH SDUs are the same), which can reduce the confusion of different terminal devices in the random access competition resolution process.
  • the probability is a variable, and different terminal devices can correspond to MAC CEs of different lengths, so that the terminal device can determine whether the random access competition of the terminal device is successfully solved according to the length of the MAC CE, so that, The base station does not need to truncate the CCCH SDU to avoid confusion when the CCCH SDUs of multiple UEs are truncated (that is, multiple truncated CCCH SDUs are the same), which can
  • the terminal device determines that the random access competition fails to be resolved, and does not need to further compare the specific contents of the MAC CE and the CCCH SDU, thereby reducing the terminal device. Interpret the complexity of the results of the competition resolution.
  • a second embodiment of the present application provides a method for random access competition resolution, where the communication device is a terminal device, and the network device is a base station as an example. As shown in FIG. 4, the method includes:
  • the terminal device sends a preamble to the base station, where the preamble is used to request random access.
  • step 401 For the specific process of step 401, reference may be made to step 201, which is not described in detail in the embodiment of the present application.
  • the base station sends a random access response to the terminal device, where the random access response includes uplink authorization information.
  • step 402 For the specific process of step 402, refer to step 202, which is not described in detail in the embodiment of the present application.
  • the terminal device sends a message 3 to the base station in a random access procedure, where the message 3 includes a CCCH SDU.
  • step 403 For the specific process of step 403, reference may be made to step 203, which is not described in detail in the embodiment of the present application.
  • the base station receives message 3 sent by at least one terminal device in a random access procedure, and message 3 includes a CCCH SDU.
  • the base station may receive the message three sent by the at least one terminal device on the same uplink resource.
  • the base station determines a target terminal device from the at least one terminal device.
  • the base station After receiving the message 3 sent by the terminal device in the random access process, the base station selects one of the terminal devices as the target terminal device, and the target terminal device is the terminal device that the base station responds to.
  • the base station determines a MAC CE according to the CCCH SDU in the third message sent by the target terminal device, where the MAC CE is used for random access competition resolution.
  • the MAC CE may include incompletely consecutive M bits of the CCCH SDU, or the MAC CE includes the last M bits of the CCCH SDU, and M is a positive integer less than or equal to N.
  • the MAC CE may include the last M bits of the CCCH SDU in message three of the target terminal device or the M bits that are not completely consecutive.
  • the MAC CE may include the first N bits and the last (M-N) bits of the CCCH SDU, and N is a positive integer less than M.
  • the UE ID (ie, I-RNTI) of the terminal device is 52 bits
  • the first 36 bits of the I-RNTI are the base station identifier
  • the last 16 bits are the base station.
  • a unique identifier assigned to the UE Assuming that M is 48, since the base station identifiers in the I-RNTIs of different terminal devices communicating with the same base station are the same (ie, the first 36 bits are the same), the unique identifier assigned by the base station to the UE (ie, the last 16 bits) is usually not identical.
  • the base station intercepts the last 48 bits of the CCCH SDU of the target terminal device as the MAC CE, which can better reduce the probability of confusion of different UEs, and better solve the problem.
  • the problem that the different UEs consider the scheduling confusion caused by the competition of their own competition can reduce the probability of confusion of random access of different terminal devices.
  • the base station sends a message four to the terminal device, where the message four includes a MAC CE.
  • the terminal device determines, according to the MAC CE, whether the random access competition of the terminal device is resolved successfully.
  • the terminal device may determine the M bits in the MAC CE that are not completely consecutive and the corresponding ones in the CCCH SDU according to the manner in which the base station intercepts the M bits that are not completely consecutive. Whether the M bits that are not completely continuous match. If the matching is successful, the terminal device determines that the random access competition of the terminal device is successfully solved. If not, the terminal device determines that the random access competition resolution of the terminal device fails.
  • the terminal device can compare whether the last M bits of the MAC CE and the last M bits of the CCCH SDU match. If the matching is successful, the terminal device determines that the random access competition of the terminal device is successfully solved. If not, the terminal device determines that the random access competition resolution of the terminal device fails.
  • the solution provided by the embodiment of the present application is mainly introduced from the perspective of a communication device and a network device.
  • the communication device and the network device include corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above functions.
  • the present application can be implemented in a combination of hardware or hardware and computer software in conjunction with the algorithm steps described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the embodiment of the present application may divide the functional modules of the communication device and the network device according to the foregoing method example.
  • each functional module may be divided according to each function, or two or more functions may be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • Embodiment 3 of the present application provides a communication device, which can use the method of Embodiment 1 or 2.
  • the communication device may be a terminal or hardware that implements similar functions.
  • the terminal includes:
  • the sending unit is configured to receive the message 4 sent by the base station in the random access process, the message 4 includes a MAC CE, and the MAC CE is used for random access competition resolution, and the length of the MAC CE is a variable.
  • a determining unit configured to determine, according to the MAC CE, whether the random access contention resolution of the communication device is successful.
  • the sending unit is further configured to: send a message to the base station, the message 3 includes a CCCH SDU, and the determining unit is configured to: determine whether the parameter of the MAC CE matches the parameter of the CCCH SDU; when determining the MAC CE When the parameter does not match the parameter of the CCCH SDU, it is determined that the random access competition of the communication device fails to be resolved; wherein the parameters of the MAC CE include the length and/or type of the MAC CE, and the parameters of the CCCH SDU include the length and/or the cause value of the CCCH SDU. .
  • the determining unit is further configured to: when determining that the parameter of the MAC CE matches the parameter of the CCCH SDU, determine whether the content of the MAC CE includes all the content of the CCCH SDU; if determining that the content of the MAC CE includes the CCCH The entire content of the SDU is determined to be successful in the random access competition of the communication device. If it is determined that the content of the MAC CE does not include all the contents of the CCCH SDU, it is determined that the random access competition of the communication device fails to be resolved.
  • the length of the MAC CE is the same as the length of the CCCH SDU, or the length of the MAC CE is greater than the length of the CCCH SDU.
  • the length of the MAC CE is an integer multiple of a preset value, and the preset value is determined according to the number of bits of the bit included in one byte.
  • the MAC CE subheader includes first indication information, where the first indication information is used to indicate the length or type of the MAC CE, and the type of the MAC CE is related to the length of the MAC CE.
  • the first indication information is located in a reserved domain or a logical channel identifier LCID domain or an extended domain in a MAC CE subheader.
  • the sending unit in Embodiment 3 can be a transceiver unit and perform similar functions. I won't go into details here.
  • the device includes a processor 601, an application processor 602, a wireless transceiver 603, a memory 604, a user interface 605, a camera 606, and an input/output interface. 607 and other components (including devices such as power supplies not shown).
  • the above determining unit may be the processor 601 and perform corresponding functions.
  • the sending unit may be a wireless transceiver 603 in the figure, which performs a corresponding function through an antenna. It will be understood that the various elements shown in the figures are merely illustrative and are not essential elements of the embodiments.
  • the device can perform functions similar to the processor of Figure 6.
  • the device includes a processor 701, a receive data processor 702, and a transmit data processor 703.
  • the above determining unit may be the processor 701 and perform corresponding functions.
  • the transmitting unit may be the transmitting data processor 703 of FIG. 7, and the receiving unit may be the receiving data processor 702 of FIG.
  • a channel coder, a channel decoder, etc. are shown in FIG. 7, it is understood that these modules are not intended to be limiting, and are merely illustrative.
  • the processing device 800 includes modules such as a modulation subsystem, a central processing subsystem, and a peripheral subsystem.
  • the communication device in this embodiment can be used as a modulation subsystem therein.
  • the modulation subsystem can include a processor 801 and an interface 802.
  • the processor 801 performs the functions of the foregoing processing unit, and the interface 802 performs the functions of the foregoing transmitting unit and/or the receiving unit.
  • the modulation subsystem includes a memory 803, the processor 801 can execute a program stored on the memory 803, and the processor 801 implements the method of the first or second embodiment when the program is executed.
  • the memory 803 may be non-volatile or volatile, and its location may be located inside the modulation subsystem or in the processing device 800 as long as the memory 803 can be connected to the The processor 801 is sufficient.
  • a computer readable storage medium having stored thereon the method of the first or second embodiment when the instruction is executed.
  • Embodiment 4 of the present application provides a communication device, and the communication device can use the method of Embodiment 1 or 2.
  • the communication device 900 includes:
  • the sending unit 901 is configured to receive the message 4 sent by the base station in the random access process, and the message 4 includes a MAC CE, where the MAC CE is used for random access competition resolution, and the length of the MAC CE is a variable.
  • the determining unit 902 is configured to determine, according to the MAC CE, whether the random access contention resolution of the communication device is successful.
  • the sending unit 901 is further configured to: send a message to the base station, the message 3 includes a CCCH SDU, and the determining unit 902 is configured to: determine whether the parameter of the MAC CE matches the parameter of the CCCH SDU; when determining the MAC When the parameters of the CE do not match the parameters of the CCCH SDU, it is determined that the random access competition of the communication device fails to be resolved; wherein the parameters of the MAC CE include the length and/or type of the MAC CE, and the parameters of the CCCH SDU include the length of the CCCH SDU and/or Reason value.
  • the determining unit 902 is further configured to: when determining that the parameter of the MAC CE matches the parameter of the CCCH SDU, determine whether the content of the MAC CE includes all the content of the CCCH SDU; if determining that the content of the MAC CE includes The content of the CCCH SDU is determined to be successful in the random access competition of the communication device. If it is determined that the content of the MAC CE does not include all the contents of the CCCH SDU, it is determined that the random access competition of the communication device fails to be resolved.
  • the length of the MAC CE is the same as the length of the CCCH SDU, or the length of the MAC CE is greater than the length of the CCCH SDU.
  • the length of the MAC CE is an integer multiple of a preset value, and the preset value is determined according to the number of bits of the bit included in one byte.
  • the MAC CE subheader includes first indication information, where the first indication information is used to indicate the length or type of the MAC CE, and the type of the MAC CE is related to the length of the MAC CE.
  • the first indication information is located in a reserved domain or an LCID domain or an extended domain in a MAC CE subheader.
  • the sending unit 901 can be used to support the communication device to perform the processes 201 and 203 in FIG. 2, the processes 401 and 403 in FIG.
  • the determining unit 902 is configured to support the communication device to perform the process 208 of FIG. 2, process 408 of FIG.
  • FIG. 10 shows a possible structural schematic diagram of the network device 10 involved in the foregoing embodiment, and the network device. 10 includes a receiving unit 1001 and a determining unit 1002.
  • the receiving unit 1001 may be configured to receive a message 3 sent by at least one communication device in a random access procedure, where the message 3 includes a CCCH SDU.
  • the determining unit 1002 may be configured to determine a target communication device from the at least one communication device; determine a MAC CE according to a CCCH SDU in message three sent by the target communication device, where the MAC CE is used for random access contention resolution, The length of the MAC CE is a variable.
  • the receiving unit 1001 is configured to support the network device to perform the process 204 in FIG. 2, the process 404 in FIG.
  • the determining unit 1002 is configured to support the network device to perform the processes 205 and 206 of FIG. 2, the processes 405 and 406 of FIG.
  • the base station may further include a transmitting unit 1003 for supporting the network device to perform the process 207 in FIG. 2, the process 407 in FIG.
  • FIG. 11 shows a possible structural schematic diagram 2 of the network device involved in the above embodiment.
  • the network device may include a processing module 1101, a communication module 1102, and a storage module 1103.
  • the processing module 1101 is configured to control various parts of the base station hardware device and application software, etc.
  • the communication module 1102 is configured to receive commands sent by other devices by using a communication method such as WiFi, or send data of the base station to other devices
  • the module 1103 is configured to perform storage of a software program of a base station, storage of data, operation of software, and the like.
  • the processing module 1101 may be a determining unit or a controller, such as a CPU, a general-purpose determining unit, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the determining unit may also be a combination of computing functions, for example comprising one or more micro-determining unit combinations, a combination of DSP and micro-determining units, and the like.
  • the communication module 1102 can be a transceiver, a transceiver circuit, a communication interface, or the like.
  • the storage module 1103 can be a memory.
  • the network device can be a base station.
  • FIG. 12 is a schematic structural diagram of a base station according to an embodiment of the present application, including a 1201 part and a 1202 part.
  • the base station 1201 is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals and baseband signals; the 1202 part is mainly used for baseband processing, controlling base stations, and the like.
  • the 1201 portion may generally be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver.
  • the 1202 portion is typically the control center of the base station and may be referred to as a processing unit for controlling the base station to perform the steps performed by the base station (i.e., the serving base station) of FIG. 3 above.
  • a processing unit for controlling the base station to perform the steps performed by the base station (i.e., the serving base station) of FIG. 3 above.
  • the transceiver unit of the 1201 part which may also be called a transceiver, or a transceiver, etc., includes an antenna and a radio frequency unit, wherein the radio frequency unit is mainly used for radio frequency processing.
  • the device for implementing the receiving function in the 1201 part may be regarded as a receiving unit
  • the device for implementing the transmitting function may be regarded as a sending unit, that is, the 1201 part includes a receiving unit and a sending unit.
  • the receiving unit may also be referred to as a receiver, a receiver, or a receiving circuit, etc.
  • the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit or the like.
  • the 1202 portion may include one or more boards, each of which may include one or more determining units and one or more memories, the determining unit for reading and executing programs in the memory to implement baseband processing functions and to base stations control. If multiple boards exist, the boards can be interconnected to increase processing power. As an optional implementation manner, multiple boards may share one or more determining units, or multiple boards may share one or more memories, or multiple boards may share one or more determinations at the same time. unit.
  • the memory and the determining unit may be integrated or independently.
  • the 1201 portion and the 1202 portion may be integrated or may be independently arranged.
  • all the functions in the 1202 part may be implemented in one chip, or may be partially integrated into one chip to realize another part of the function integration in another one or more chips, which is not limited in this application.
  • the functions described herein can be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.
  • embodiments of the present application can be provided as a method, system, or computer program product. Therefore, the embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, embodiments of the present application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG.
  • the computer program instructions can be provided to a determination unit of a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing device to produce a machine such that instructions are executed by a determining unit of a computer or other programmable data processing device.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本申请实施例提供一种随机接入竞争解决的方法和装置，涉及通信领域，能够降低不同通信设备在随机接入的竞争解决过程中发生混淆的概率。其方法为：通信设备在随机接入过程中接收网络设备发送的消息四，消息四包括MAC CE，MAC CE用于随机接入竞争解决，MAC CE的长度为变量；通信设备根据MAC CE确定通信设备的随机接入竞争解决是否成功。本申请实施例应用于LTE或UMTS中的随机接入竞争解决的过程。

Description

一种随机接入竞争解决的方法和装置
本申请要求于2018年04月27日提交国家知识产权局、申请号为201810419115.2、申请名称为“一种随机接入竞争解决的方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及一种随机接入竞争解决的方法和装置。
背景技术
当用户设备(user equipment，UE)进行基于竞争的随机接入的时候，首先可以从资源池中选择一个前导码发送给基站。由于选择的随机性，不同的UE可能选择相同的前导码发送给基站，从而不同的UE会接收到基站发送的同一个随机接入响应(random access response，RAR)。不同的UE都可以利用该上行授权指示的上行资源发送消息三，会导致不同的UE发生随机接入冲突。为了解决冲突，不同的UE可以将公共控制信道服务数据单元(common control channel service data unit，CCCH SDU)携带在消息三中进行发送给基站，CCCH SDU可以用于区分不同UE。基站接收到不同UE发送的消息三后，选择响应其中一个消息三，把该消息三的CCCH SDU作为媒体接入控制层的控制单元(medium access control control element，MAC CE)携带在消息四中，并将消息四发送给不同的UE。不同的UE中的每个UE接收到消息四后，将MAC CE与消息三中的CCCH SDU进行比较，如果一致则确定随机接入竞争成功，不一致则确定随机接入竞争失败。
但是，当CCCH SDU的长度较长时，基站可能会截短CCCH SDU，并将截短的CCCH SDU作为MAC CE携带在消息四中发送给各个UE。由于不同的UE对应的CCCH SDU被截短后可能会出现相同的情况，导致不同的UE都认为竞争解决成功的情况，从而使得不同用户设备的随机接入在竞争解决过程中发生混淆。
发明内容
本申请实施例提供一种随机接入竞争解决的方法和装置，能够降低不同通信设备(例如用户设备)在随机接入的竞争解决过程中发生混淆的概率。
第一方面，本申请实施例提供一种随机接入竞争解决的方法，包括：通信设备在随机接入过程中接收网络设备发送的消息四，消息四包括MAC CE，MAC CE用于随机接入竞争解决，MAC CE的长度为变量；通信设备根据MAC CE确定通信设备的随机接入竞争解决是否成功。
本申请实施例中，MAC CE的长度为变量，不同的通信设备可以对应不同长度的MAC CE，从而通信设备可以根据MAC CE的长度确定通信设备的随机接入竞争解决是否成功，这样一来，网络设备无需截短CCCH SDU，避免多个通信设备的CCCH SDU被截短后出现混淆的情况(即多个截短的CCCH SDU相同)，能够降低不同通信设备在随机接入的竞争解决过程中发生混淆的概率。
在一种可能的实现方式中，通信设备在随机接入过程中接收网络设备发送的消息四之 前，该方法还包括：通信设备向网络设备发送消息三，消息三包括CCCH SDU；通信设备根据MAC CE确定通信设备的随机接入竞争解决是否成功包括：通信设备确定MAC CE的参数与CCCH SDU的参数是否匹配；当通信设备确定MAC CE的参数与CCCH SDU的参数不匹配时，通信设备确定通信设备随机接入竞争解决失败；其中，MAC CE的参数包括MAC CE的长度和/或类型，CCCH SDU的参数包括CCCH SDU的长度和/或原因值。
这样一来，当通信设备确定MAC CE的参数与CCCH SDU的参数不匹配时，通信设备确定通信设备随机接入竞争解决失败，无需进一步比较MAC CE和CCCH SDU的具体内容，降低了通信设备判读竞争解决结果的复杂度。
在一种可能的实现方式中，该方法还包括：当通信设备确定MAC CE的参数与CCCH SDU的参数匹配时，通信设备确定MAC CE的内容是否包括CCCH SDU的全部内容；若通信设备确定MAC CE的内容包括CCCH SDU的全部内容，通信设备确定通信设备随机接入竞争解决成功；若通信设备确定MAC CE的内容不包括CCCH SDU的全部内容，通信设备确定通信设备随机接入竞争解决失败。
本申请实施例中，由于不同的通信设备发送的消息三中的CCCH SDU的全部内容不会出现相同的情况，因此不会出现多个通信设备同时认为自身随机接入竞争解决成功的情况，避免后续调度问题。
在一种可能的实现方式中，MAC CE的长度与CCCH SDU的长度相同，或者MAC CE的长度大于CCCH SDU的长度。
这样一来，网络设备无需截短CCCH SDU，避免多个通信设备的CCCH SDU被截短后出现混淆的情况，能够降低不同通信设备在随机接入的竞争解决过程中发生混淆的概率。
在一种可能的实现方式中，MAC CE的长度是预设值的整数倍，预设值是根据一个字节包括的比特位的位数确定的。
例如，预设值可以为8，即MAC CE的长度是8的整数倍，便于通信设备对MAC CE进行解析。
在一种可能的实现方式中，MAC CE子头中包括第一指示信息，第一指示信息用于指示MAC CE的长度或者类型，MAC CE的类型与MAC CE的长度相关。
这样一来，通信设备可以根据第一指示信息确定MAC CE的长度或类型，无需读取MAC CE的全部比特位，从而降低了通信设备判读竞争解决结果的复杂度。
在一种可能的实现方式中，第一指示信息位于MAC CE子头中的预留域或逻辑信道标识(Logical Channel Identify，LCID)域或扩展域。
当第一指示信息位于MAC CE子头中的预留域或LCID域时，无需对MAC CE子头的格式进行修改，可以更好的适配当前的通信系统。
第二方面，本申请实施例提供一种通信设备，包括：发送单元，用于在随机接入过程中接收网络设备发送的消息四，消息四包括MAC CE，MAC CE用于随机接入竞争解决，MAC CE的长度为变量；确定单元，用于根据MAC CE确定通信设备的随机接入竞争解决是否成功。
在一种可能的实现方式中，发送单元还用于：向网络设备发送消息三，消息三包括CCCH SDU；确定单元用于：确定MAC CE的参数与CCCH SDU的参数是否匹配；当确定MAC CE的参数与CCCH SDU的参数不匹配时，确定通信设备随机接入竞争解决失败； 其中，MAC CE的参数包括MAC CE的长度和/或类型，CCCH SDU的参数包括CCCH SDU的长度和/或原因值。
在一种可能的实现方式中，确定单元还用于：当确定MAC CE的参数与CCCH SDU的参数匹配时，确定MAC CE的内容是否包括CCCH SDU的全部内容；若确定MAC CE的内容包括CCCH SDU的全部内容，确定通信设备随机接入竞争解决成功；若确定MAC CE的内容不包括CCCH SDU的全部内容，确定通信设备随机接入竞争解决失败。
在一种可能的实现方式中，MAC CE的长度与CCCH SDU的长度相同，或者MAC CE的长度大于CCCH SDU的长度。
在一种可能的实现方式中，MAC CE的长度是预设值的整数倍，预设值是根据一个字节包括的比特位的位数确定的。
在一种可能的实现方式中，MAC CE子头中包括第一指示信息，第一指示信息用于指示MAC CE的长度或者类型，MAC CE的类型与MAC CE的长度相关。
在一种可能的实现方式中，第一指示信息位于MAC CE子头中的预留域或LCID域或扩展域。
第二方面及其各种可选的实现方式的技术效果可以参见第一方面及其各种可能的实现方式的技术效果，此处不再赘述。
第三方面，本发明实施例提供了一种装置，该装置以芯片的产品形态存在，该装置的结构中包括处理器和存储器，该存储器用于与处理器耦合，保存该装置必要的程序指令和数据，该处理器用于执行存储器中存储的程序指令，使得该装置执行上述方法中通信设备的功能。
第四方面，本发明实施例提供了一种通信设备，该通信设备可以实现上述方法实施例中通信设备所执行的功能，功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个上述功能相应的模块。
在一种可能的设计中，该通信设备的结构中包括处理器和通信接口，该处理器被配置为支持该通信设备执行上述方法中相应的功能。该通信接口用于支持该通信设备与其他网元之间的通信。该通信设备还可以包括存储器，该存储器用于与处理器耦合，其保存该通信设备必要的程序指令和数据。
第五方面，本发明实施例提供一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行第一方面提供的任意一种方法。
第六方面，本发明实施例提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行第一方面提供的任意一种方法。
第七方面，本申请实施例提供一种随机接入竞争解决的方法，包括：网络设备接收至少一个通信设备在随机接入过程中发送的消息三，消息三包括CCCH SDU；网络设备从至少一个通信设备中确定一个目标通信设备；网络设备根据目标通信设备发送的消息三中的CCCH SDU确定MAC CE，MAC CE用于随机接入竞争解决，MAC CE的长度为变量。
本申请实施例中，MAC CE的长度可以是根据CCCH SDU变化的变量，不同的通信设备可以对应不同的CCCH SDU，从而网络设备无需截短CCCH SDU，避免多个UE的CCCH SDU被截短后出现混淆的情况(即多个截短的CCCH SDU相同)，能够降低不同通信设备在随机接入的竞争解决过程中发生混淆的概率。
在一种可能的实现方式中，网络设备根据目标通信设备发送的消息三中的CCCH SDU确定MAC CE包括：网络设备根据目标通信设备发送的消息三中的CCCH SDU的参数确定MAC CE的参数；其中，MAC CE的参数包括MAC CE的长度和/或类型，CCCH SDU的参数包括CCCH SDU的长度和/或原因值。
这样一来，当MAC CE的参数与CCCH SDU的参数不匹配时，可以确定通信设备随机接入竞争解决失败，无需进一步比较MAC CE和CCCH SDU的具体内容，降低了判读竞争解决结果的复杂度。
在一种可能的实现方式中，MAC CE的长度与CCCH SDU的长度相同，或者MAC CE的长度大于目标通信设备发送的消息三中的CCCH SDU的长度。
由于不同的通信设备发送的消息三中的CCCH SDU的全部内容不会出现相同的情况，因此不会出现多个通信设备同时认为自身随机接入竞争解决成功的情况，避免后续调度问题。
在一种可能的实现方式中，MAC CE的长度是预设值的整数倍，预设值是根据一个字节包括的比特位的位数确定的。
例如，预设值可以为8，即MAC CE的长度是8的整数倍，便于通信设备对MAC CE进行解析。
在一种可能的实现方式中，MAC CE子头中包括第一指示信息，第一指示信息用于指示MAC CE的长度或者类型，MAC CE的类型与MAC CE的长度相关。
这样一来，通信设备可以根据第一指示信息确定MAC CE的长度或类型，无需读取MAC CE的全部比特位，从而降低了通信设备判读竞争解决结果的复杂度。
在一种可能的实现方式中，第一指示信息位于MAC CE子头中的预留域或LCID域或扩展域。
当第一指示信息位于MAC CE子头中的预留域或LCID域时，无需对MAC CE子头的格式进行修改，可以更好的适配当前的通信系统。
第八方面，本申请实施例提供一种网络设备，包括：接收单元，用于接收至少一个通信设备在随机接入过程中发送的消息三，消息三包括CCCH SDU；确定单元，用于从至少一个通信设备中确定一个目标通信设备；确定单元，还用于根据目标通信设备发送的消息三中的CCCH SDU确定MAC CE，MAC CE用于随机接入竞争解决，MAC CE的长度为变量。
在一种可能的实现方式中，确定单元，用于：根据目标通信设备发送的消息三中的CCCH SDU的参数确定MAC CE的参数；其中，MAC CE的参数包括MAC CE的长度和/或类型，CCCH SDU的参数包括CCCH SDU的长度和/或原因值。
在一种可能的实现方式中，MAC CE的长度与CCCH SDU的长度相同，或者MAC CE的长度大于目标通信设备发送的消息三中的CCCH SDU的长度。
在一种可能的实现方式中，MAC CE的长度是预设值的整数倍，预设值是根据一个字节包括的比特位的位数确定的。
在一种可能的实现方式中，MAC CE子头中包括第一指示信息，第一指示信息用于指示MAC CE的长度或者类型，MAC CE的类型与MAC CE的长度相关。
在一种可能的实现方式中，第一指示信息位于MAC CE子头中的预留域或LCID域或 扩展域。
第八方面及其各种可选的实现方式的技术效果可以参见第七方面及其各种可能的实现方式的技术效果，此处不再赘述。
第九方面，本发明实施例提供了一种网络设备，该网络设备可以实现上述方法实施例中网络设备所执行的功能，功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个上述功能相应的模块。
在一种可能的设计中，该网络设备的结构中包括处理器和通信接口，该处理器被配置为支持该网络设备执行上述方法中相应的功能。该通信接口用于支持该网络设备与其他网元之间的通信。该网络设备还可以包括存储器，该存储器用于与处理器耦合，其保存该网络设备必要的程序指令和数据。
第十方面，本发明实施例提供一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行第七方面提供的任意一种方法。
第十一方面，本发明实施例提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行第七方面提供的任意一种方法。
附图说明
图1为本申请实施例提供的一种通信系统架构示意图；
图2为本申请实施例提供的一种随机接入竞争解决的方法的信号交互示意图一；
图3为本申请实施例提供的一种MAC CE子头的格式示意图；
图4为本申请实施例提供的一种随机接入竞争解决的方法的信号交互示意图二；
图5为本申请实施例提供的一种UE ID的格式示意图；
图6为本申请实施例提供的一种通信设备的结构示意图一；
图7为本申请实施例提供的一种通信设备的结构示意图二；
图8为本申请实施例提供的一种通信设备的结构示意图三；
图9为本申请实施例提供的一种通信设备的结构示意图四；
图10为本申请实施例提供的一种网络设备的结构示意图一；
图11为本申请实施例提供的一种网络设备的结构示意图二；
图12为本申请实施例提供的一种基站的结构示意图。
具体实施方式
本申请实施例提供一种随机接入竞争解决的方法和装置，应用于各种无线通信系统。例如，本申请实施例可以应用于长期演进(long term evolution，LTE)或通用移动通信系统(universal mobile telecommunications system，UMTS)中的随机接入竞争解决的过程。
如图1所示，为本申请实施例提供的一种通信系统架构示意图，包括网络设备(例如，基站)和多个通信设备(例如，终端设备1和终端设备2)。对于多个终端设备中的每个终端设备，基站用于接收该终端设备在随机接入过程中发送的消息三，消息三包括CCCH SDU。基站根据CCCH SDU确定用于随机接入竞争解决的MAC CE。需要说明的是，MAC CE的长度是变量。而后，基站向终端设备发送消息四，消息四包括MAC CE。多个终端设备中的每个终端设备接收到基站发送的消息四之后，可以根据消息四中的MAC CE确定终端设备的随机接入竞争解决是否成功。
网络设备可以为基站，基站可以是能和终端设备通信的设备。基站可以是中继站或接 入点等。基站可以是全球移动通信系统(global system for mobile communication，GSM)或码分多址(code division multiple access，CDMA)网络中的基站收发信台(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)中的NB(NodeB)，还可以是LTE中的eNB或eNodeB(evolutional NodeB)。基站还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器。基站还可以是5G网络中的基站或未来演进网络中的基站等。
通信设备可以为终端设备，终端设备可以是向用户提供语音和/或其他业务数据连通性的终端设备，或具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。可以是便携式、袖珍式、计算机内置的或者车载的移动装置，也可以是个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(Session Initiation Protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)等设备，在此不作限定。
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系；在公式中，字符“/”，表示前后关联对象是一种“相除”的关系。
需要说明的是，本发明实施例中，“的(of)”，“相应的(corresponding，relevant)”和“对应的(corresponding)”有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。
本申请实施例一提供一种随机接入竞争解决的方法，以通信设备为终端设备，网络设备为基站为例进行说明，如图2所示，包括：
201、终端设备向基站发送前导码，前导码用于请求随机接入。
多个终端设备可以通过同样的前导码向基站请求随机接入。举例来说，如图1所示，终端设备1和终端设备2可以通过相同的前导码向基站请求随机接入。
202、基站向终端设备发送随机接入响应，随机接入响应包括上行授权信息。
基站接收终端设备发送的前导码。而后，基站根据终端设备发送的前导码向终端设备发送随机接入响应。
其中，随机接入响应中携带的上行授权信息所指示的上行资源的大小在不同的通信系统中可以有不同的规定。例如，在LTE中，协议规定随机接入响应中携带的上行授权信息所指示的上行资源最小为56比特，即基站可以为终端设备分配大于或等于56比特的任意一个上行资源。
203、终端设备在随机接入过程中向基站发送消息三，消息三包括CCCH SDU。
终端设备接收基站发送的随机接入响应，根据随机接入响应中的上行授权信息所指示的上行资源向基站发送消息三。
举例来说，当上行授权所指示的资源大小为56比特时，消息三可以包含8比特的MAC子头和48比特的CCCH SDU。CCCH SDU可以包括(携带)3比特或4比特的原因值，4比特的编码开销，以及40或41比特的UE ID。当UE ID包括40比特时，原因值包括4比特；当UE ID包括41比特时，原因值包括3比特。其中，原因值可以用于指示CCCH SDU的长度。示例性的，如表1所示，在不同的场景中，即RRC消息类型不同时，UE ID包括的内容可以是不同的。
表1
Figure PCTCN2019083746-appb-000001
其中，C-RNTI是终端设备在小区无线网络临时的标识(Cell Radio Network Temporary Identify)。short MAC-I是截短的完整性信息鉴权码(short Message Authentication Code for Integrity)。resume ID即恢复标识。PCI是物理小区标识(Physical Cell ID)。S-TMSI是临时UE识别号(SAE-Temporary Mobile Subscriber Identity)。
需要说明的是，若不同的终端设备向基站发送相同的前导码，则不同的终端设备可以在相同的上行资源向基站发送消息三。
204、基站接收至少一个终端设备在随机接入过程中发送的消息三，消息三包括CCCH SDU。
在一种可能的设计中，基站可以在相同的上行资源接收至少一个终端设备发送的消息三。
205、基站从至少一个终端设备中确定一个目标终端设备。
基站接收到至少一个终端设备发送的消息三后，选择其中一个终端设备作为目标终端设备，目标终端设备即基站响应的终端设备。
206、基站根据目标终端设备发送的消息三中的CCCH SDU确定MAC CE，MAC CE用于随机接入竞争解决。
其中，MAC CE的长度为变量。在一种可能的设计中，MAC CE的长度可以是根据CCCH SDU的长度确定的变量。MAC CE的长度大于或等于两种。
在一种可能的设计中，MAC CE的长度与CCCH SDU的长度相同。例如，假设目标终端设备对应的CCCH SDU的长度为48比特，那么MAC CE的长度可以为48比特，假设目标终端设备对应的CCCH SDU长度为56比特，那么MAC CE的长度可以为56比特。
在另一种可能的设计中，MAC CE的长度大于CCCH SDU的长度。例如，MAC CE的内容可以包括CCCH SDU的内容以及一定数量的填充(padding)比特，MAC CE中包含的填充比特的数量可以根据目标终端设备发送的消息三中包含的填充比特的数量确定。
在一种可能的设计中，MAC CE的内容可以包括CCCH SDU的内容以及部分冗余比 特，以保证MAC CE的长度是预设值的整数倍。其中，预设值是根据一个字节包括的比特位的位数确定的。例如，预设值可以为8。假设CCCH SDU的长度为54比特，预设值为8时，MAC CE的内容可以包括CCCH SDU的48比特和2个冗余比特，即56比特，从而保证MAC CE的长度是8的整数倍，以便于UE对MAC CE进行解析。
在一种可能的设计中，MAC CE子头中包括第一指示信息，第一指示信息用于指示MAC CE的长度或者类型。MAC CE的类型与MAC CE的长度相关。MAC CE的长度与目标终端设备发送的消息三中的CCCH SDU的长度相关。例如，假设目标终端设备对应的CCCH SDU的长度为48比特，MAC CE的长度可以为48比特，MAC CE的类型可以为A类型。假设目标终端设备对应的CCCH SDU的长度为56比特，MAC CE的类型可以为B类型。这样一来，终端设备可以根据第一指示信息确定MAC CE的长度或类型，无需读取MAC CE的全部比特位，从而降低了终端设备判读竞争解决结果的复杂度。
在一种可能的设计中，如图3所示，第一指示信息可以位于MAC CE子头中的预留域或LCID域或扩展域。扩展域可以是MAC CE子头中新增的域。
207、基站向终端设备发送消息四，消息四包括MAC CE。
208、终端设备根据MAC CE确定终端设备的随机接入竞争解决是否成功。
终端设备接收基站发送的消息四，确定消息四中的MAC CE的参数与自身发送的消息三中携带的CCCH SDU的参数是否匹配；其中，MAC CE的参数包括MAC CE的长度和/或类型，CCCH SDU的参数包括CCCH SDU的长度和/或原因值。
当终端设备确定MAC CE的参数与CCCH SDU的参数不匹配时，终端设备确定终端设备随机接入竞争解决失败。当终端设备确定MAC CE的长度小于CCCH SDU的长度时，终端设备确定终端设备随机接入竞争解决失败。或者，当终端设备确定MAC CE的长度与CCCH SDU中的原因值不匹配时，即终端设备确定MAC CE的长度小于CCCH SDU中的原因值指示的长度时，终端设备确定终端设备随机接入竞争解决失败。或者，当终端设备确定MAC CE的类型与CCCH SDU的长度不匹配时，即终端设备确定MAC CE的类型指示的长度小于CCCH SDU的长度时，终端设备确定终端设备随机接入竞争解决失败。或者，当终端设备确定MAC CE的类型与CCCH SDU中的原因值不匹配时，即终端设备确定MAC CE的类型指示的长度小于CCCH SDU中的原因值指示的长度时，终端设备确定终端设备随机接入竞争解决失败。
当终端设备确定MAC CE的参数与CCCH SDU的参数匹配时，终端设备确定MAC CE的内容是否包括CCCH SDU的全部内容。当终端设备确定MAC CE的长度大于或等于CCCH SDU的长度时，终端设备确定MAC CE的参数与CCCH SDU的参数匹配。或者，当终端设备确定MAC CE的长度与CCCH SDU中的原因值匹配时，即终端设备确定MAC CE的长度大于或等于CCCH SDU中的原因值指示的长度时，终端设备确定MAC CE的参数与CCCH SDU的参数匹配。或者，当终端设备确定MAC CE的类型与CCCH SDU的长度匹配时，即终端设备确定MAC CE的类型指示的长度大于或等于CCCH SDU的长度时，终端设备确定MAC CE的参数与CCCH SDU的参数匹配。或者，当终端设备确定MAC CE的类型与CCCH SDU中的原因值匹配时，即终端设备确定MAC CE的类型指示的长度大于或等于CCCH SDU中的原因值指示的长度时，终端设备确定MAC CE的参数与CCCH SDU的参数匹配。而后，终端设备确定MAC CE的内容是否包括CCCH SDU的全部内容。 若终端设备确定MAC CE的内容与CCCH SDU的全部内容相同，或者终端设备确定MAC CE的前M位比特与CCCH SDU的全部内容相同，则终端设备确定MAC CE的内容包括CCCH SDU的全部内容。若终端设备确定MAC CE的内容与CCCH SDU的全部内容不完全相同，或者终端设备确定MAC CE的前M位比特与CCCH SDU的全部内容不完全相同，终端设备确定MAC CE的内容不包括CCCH SDU的全部内容。其中，M为小于或者等于N的正整数。当终端设备确定MAC CE的内容包括CCCH SDU的全部内容时，终端设备确定终端设备随机接入竞争解决成功；当终端设备确定MAC CE的内容不包括CCCH SDU的全部内容时，终端设备确定终端设备随机接入竞争解决失败。
本申请实施例中，MAC CE的长度为变量，不同的终端设备可以对应不同长度的MAC CE，从而终端设备可以根据MAC CE的长度确定终端设备的随机接入竞争解决是否成功，这样一来，基站无需截短CCCH SDU，避免多个UE的CCCH SDU被截短后出现混淆的情况(即多个截短的CCCH SDU相同)，能够降低不同终端设备在随机接入的竞争解决过程中发生混淆的概率。
进一步的，若消息四中的MAC CE的参数和消息三中的CCCH SDU的参数不匹配，终端设备确定随机接入竞争解决失败，无需进一步比较MAC CE和CCCH SDU的具体内容，降低了终端设备判读竞争解决结果的复杂度。
本申请实施例二提供一种随机接入竞争解决的方法，以通信设备为终端设备，网络设备为基站为例进行说明，如图4所示，包括：
401、终端设备向基站发送前导码，前导码用于请求随机接入。
步骤401的具体过程可以参考步骤201，本申请实施例不做赘述。
402、基站向终端设备发送随机接入响应，随机接入响应包括上行授权信息。
步骤402的具体过程可以参考步骤202，本申请实施例不做赘述。
403、终端设备在随机接入过程中向基站发送消息三，消息三包括CCCH SDU。
步骤403的具体过程可以参考步骤203，本申请实施例不做赘述。
404、基站接收至少一个终端设备在随机接入过程中发送的消息三，消息三包括CCCH SDU。
在一种可能的设计中，基站可以在相同的上行资源接收至少一个终端设备发送的消息三。
405、基站从至少一个终端设备中确定一个目标终端设备。
基站接收到至少一个终端设备在随机接入过程中发送的消息三后，选择其中一个终端设备作为目标终端设备，目标终端设备即基站响应的终端设备。
406、基站根据目标终端设备发送的消息三中的CCCH SDU确定MAC CE，MAC CE用于随机接入竞争解决。
在一种可能的设计中，MAC CE可以包括CCCH SDU的不完全连续的M个比特位，或者MAC CE包括CCCH SDU的后M个比特位，M为小于或者等于N的正整数。
在一种可能的设计中，MAC CE可以包括目标终端设备发送的消息三中的CCCH SDU的后M个比特位或者不完全连续的M个比特位。示例性的，当MAC CE包括CCCH SDU的不完全连续的M个比特位时，MAC CE可以包括CCCH SDU的前N个比特和后(M-N)个比特，N为小于M的正整数。
举例来说，假设在RRC建立恢复的场景下，如图5所示，终端设备的UE ID(即I-RNTI)为52比特，I-RNTI的前36比特为基站标识，后16比特为基站为UE分配的唯一标识。假设M为48，由于与同一基站通信的不同终端设备的I-RNTI中的基站标识是相同的(即前36比特相同)，而基站为UE分配的唯一标识(即后16比特)通常是不相同的。因此，相比截取目标终端设备的CCCH SDU的前48比特作为MAC CE，基站截取目标终端设备的CCCH SDU的后48比特作为MAC CE可以更好的降低不同UE发生混淆的概率，更好的解决了不同的UE都认为自身竞争解决成功导致的调度混乱的问题，能够降低不同终端设备的随机接入发生混淆的概率。
407、基站向终端设备发送消息四，消息四包括MAC CE。
408、终端设备根据MAC CE确定终端设备的随机接入竞争解决是否成功。
若MAC CE包括CCCH SDU中不完全连续的M个比特位，终端设备可以根据基站截取不完全连续的M个比特位的方式确定MAC CE中不完全连续的M个比特位和CCCH SDU中相应的不完全连续的M个比特位是否匹配。若匹配，终端设备确定终端设备的随机接入竞争解决成功，若不匹配，终端设备确定终端设备的随机接入竞争解决失败。
若MAC CE包括CCCH SDU的后M个比特位，终端设备可以比较MAC CE的后M个比特位和CCCH SDU的后M个比特位是否匹配。若匹配，终端设备确定终端设备的随机接入竞争解决成功，若不匹配，终端设备确定终端设备的随机接入竞争解决失败。
由于CCCH SDU的后M位比特不重复的可能性更高，相比现有技术中截取目标终端设备的CCCH SDU的前48比特作为MAC CE，基站截取目标终端设备的CCCH SDU的后M(例如，M＝48)位比特作为MAC CE可以更好的降低不同终端设备的随机接入发生混淆的概率。
上述主要从通信设备和网络设备的角度对本申请实施例提供的方案进行了介绍。可以理解的是，通信设备和网络设备为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对通信设备和网络设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
本申请实施例三提供一种通信设备，该通信设备可以使用实施例一或二的方法。该通信设备可以是终端，也可以是实现类似功能的硬件。所述终端包括：
发送单元，用于在随机接入过程中接收基站发送的消息四，消息四包括MAC CE，MAC CE用于随机接入竞争解决，MAC CE的长度为变量。
确定单元，用于根据MAC CE确定通信设备的随机接入竞争解决是否成功。
在一种可能的实现方式中，发送单元还用于：向基站发送消息三，消息三包括CCCH  SDU；确定单元用于：确定MAC CE的参数与CCCH SDU的参数是否匹配；当确定MAC CE的参数与CCCH SDU的参数不匹配时，确定通信设备随机接入竞争解决失败；其中，MAC CE的参数包括MAC CE的长度和/或类型，CCCH SDU的参数包括CCCH SDU的长度和/或原因值。
在一种可能的实现方式中，确定单元还用于：当确定MAC CE的参数与CCCH SDU的参数匹配时，确定MAC CE的内容是否包括CCCH SDU的全部内容；若确定MAC CE的内容包括CCCH SDU的全部内容，确定通信设备随机接入竞争解决成功；若确定MAC CE的内容不包括CCCH SDU的全部内容，确定通信设备随机接入竞争解决失败。
在一种可能的实现方式中，MAC CE的长度与CCCH SDU的长度相同，或者MAC CE的长度大于CCCH SDU的长度。
在一种可能的实现方式中，MAC CE的长度是预设值的整数倍，预设值是根据一个字节包括的比特位的位数确定的。
在一种可能的实现方式中，MAC CE子头中包括第一指示信息，第一指示信息用于指示MAC CE的长度或者类型，MAC CE的类型与MAC CE的长度相关。
在一种可能的实现方式中，第一指示信息位于MAC CE子头中的预留域或逻辑信道标识LCID域或扩展域。
可以理解的是，实施例三中的发送单元可以是收发单元，并完成类似的功能。这里不再赘述。
本实施例中的通信设备为终端时，可以参照图6所示的设备，该设备包括处理器601，应用处理器602，无线收发器603，存储器604，用户接口605，相机606，输入输出接口607以及其他一些元件(包括未示出的电源等设备)。在图6中，上述确定单元可以是所述处理器601，并完成相应的功能。所述发送单元，可以是图中的无线收发器603，其通过天线完成相应的功能。可以理解图中所示的各个元件只是示意性的，并不是完成本实施例必须的元件。
本实施例中的通信设备为终端时，可以参照图7所示的设备。作为一个例子，该设备可以完成类似于图6中处理器的功能。在图7中，该设备包括处理器701，接收数据处理器702和发送数据处理器703。在图7中，上述确定单元可以是所述处理器701，并完成相应的功能。所述发送单元可以是图7中发送数据处理器703，所述接收单元可以是图7中接收数据处理器702。虽然图7中示出了信道编码器、信道解码器等，但是可以理解这些模块并不对本实施例构成限制性说明，仅是示意性的。
图8示出本实施例的另一种形式。处理装置800中包括调制子系统、中央处理子系统、周边子系统等模块。本实施例中的通信设备可以作为其中的调制子系统。具体的，该调制子系统可以包括处理器801和接口802。其中处理器801完成上述处理单元的功能，接口802完成上述发送单元和/或接收单元的功能。作为另一种变形，该调制子系统包括存储器803、处理器801可以运行存储在存储器803上的程序，所述处理器801执行所述程序时实现实施例一或二所述的方法。需要注意的是，所述存储器803可以是非易失性的，也可以是易失性的，其位置可以位于调制子系统内部，也可以位于处理装置800中，只要该存储器803可以连接到所述处理器801即可。
作为本实施例的另一种形式，提供一种计算机可读存储介质，其上存储有指令该指令 被执行时执行实施例一或二所述方法。
本申请实施例四提供一种通信设备，该通信设备可以使用实施例一或二的方法。如图9所示，所述通信设备900包括：
发送单元901，用于在随机接入过程中接收基站发送的消息四，消息四包括MAC CE，MAC CE用于随机接入竞争解决，MAC CE的长度为变量。
确定单元902，用于根据MAC CE确定通信设备的随机接入竞争解决是否成功。
在一种可能的实现方式中，发送单元901还用于：向基站发送消息三，消息三包括CCCH SDU；确定单元902用于：确定MAC CE的参数与CCCH SDU的参数是否匹配；当确定MAC CE的参数与CCCH SDU的参数不匹配时，确定通信设备随机接入竞争解决失败；其中，MAC CE的参数包括MAC CE的长度和/或类型，CCCH SDU的参数包括CCCH SDU的长度和/或原因值。
在一种可能的实现方式中，确定单元902还用于：当确定MAC CE的参数与CCCH SDU的参数匹配时，确定MAC CE的内容是否包括CCCH SDU的全部内容；若确定MAC CE的内容包括CCCH SDU的全部内容，确定通信设备随机接入竞争解决成功；若确定MAC CE的内容不包括CCCH SDU的全部内容，确定通信设备随机接入竞争解决失败。
在一种可能的实现方式中，MAC CE的长度与CCCH SDU的长度相同，或者MAC CE的长度大于CCCH SDU的长度。
在一种可能的实现方式中，MAC CE的长度是预设值的整数倍，预设值是根据一个字节包括的比特位的位数确定的。
在一种可能的实现方式中，MAC CE子头中包括第一指示信息，第一指示信息用于指示MAC CE的长度或者类型，MAC CE的类型与MAC CE的长度相关。
在一种可能的实现方式中，第一指示信息位于MAC CE子头中的预留域或LCID域或扩展域。
其中，发送单元901可以用于支持通信设备执行图2中的过程201和203，图4中的过程401和403。确定单元902用于支持通信设备执行图2中的过程208，图4中的过程408。
本申请实施例五提供一种网络设备，在采用对应各个功能划分各个功能模块的情况下，图10示出了上述实施例中所涉及的网络设备10的一种可能的结构示意图一，网络设备10包括：接收单元1001和确定单元1002。在本申请实施例中，接收单元1001可以用于接收至少一个通信设备在随机接入过程中发送的消息三，所述消息三包括CCCH SDU。确定单元1002可以用于从所述至少一个通信设备中确定一个目标通信设备；根据所述目标通信设备发送的消息三中的CCCH SDU确定MAC CE，所述MAC CE用于随机接入竞争解决，所述MAC CE的长度为变量。接收单元1001用于支持网络设备执行图2中的过程204，图4中的过程404。确定单元1002用于支持网络设备执行图2中的过程205和206，图4中的过程405和406。基站还可以包括发送单元1003，用于支持网络设备执行图2中的过程207，图4中的过程407。
在采用集成的单元的情况下，图11示出了上述实施例中所涉及的网络设备的一种可能的结构示意图二。在本申请中，网络设备可以包括处理模块1101、通信模块1102和存储模块1103。其中，处理模块1101用于控制基站的各部分硬件装置和应用程序软件等；通 信模块1102用于可使用WiFi等通讯方式接受其它设备发送的指令，也可以将基站的数据发送给其它设备；存储模块1103用于执行基站的软件程序的存储、数据的存储和软件的运行等。其中，处理模块1101可以是确定单元或控制器，例如可以是CPU，通用确定单元，DSP，ASIC，FPGA或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。确定单元也可以是实现计算功能的组合，例如包含一个或多个微确定单元组合，DSP和微确定单元的组合等等。通信模块1102可以是收发器、收发电路或通信接口等。存储模块1103可以是存储器。
在一种可能的设计中，网络设备可以为基站。如图12所示，为本申请实施例提供的一种基站的结构示意图，包括1201部分以及1202部分。基站1201部分主要用于射频信号的收发以及射频信号与基带信号的转换；1202部分主要用于基带处理，对基站进行控制等。1201部分通常可以称为收发单元、收发机、收发电路、或者收发器等。1202部分通常是基站的控制中心，通常可以称为处理单元，用于控制基站执行上述图3中关于基站(即服务基站)所执行的步骤。具体可参见上述相关部分的描述。
1201部分的收发单元，也可以称为收发机，或收发器等，其包括天线和射频单元，其中射频单元主要用于进行射频处理。可选的，可以将1201部分中用于实现接收功能的器件视为接收单元，将用于实现发送功能的器件视为发送单元，即1201部分包括接收单元和发送单元。接收单元也可以称为接收机、接收器、或接收电路等，发送单元可以称为发射机、发射器或者发射电路等。
1202部分可以包括一个或多个单板，每个单板可以包括一个或多个确定单元和一个或多个存储器，确定单元用于读取和执行存储器中的程序以实现基带处理功能以及对基站的控制。若存在多个单板，各个单板之间可以互联以增加处理能力。作为一中可选的实施方式，也可以是多个单板共用一个或多个确定单元，或者是多个单板共用一个或多个存储器，或者是多个单板同时共用一个或多个确定单元。其中，存储器和确定单元可以是集成在一起的，也可以是独立设置的。在一些实施例中，1201部分和1202部分可以是集成在一起的，也可以是独立设置的。另外，1202部分中的全部功能可以集成在一个芯片中实现，也可以部分功能集成在一个芯片中实现另外一部分功能集成在其他一个或多个芯片中实现，本申请对此不进行限定。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述的具体实施方式，对本申请的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本申请的具体实施方式而已，并不用于限定本申请的保护范围，凡在本申请的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请的保护范围之内。
本领域内的技术人员应明白，本申请实施例可提供为方法、系统、或计算机程序产品。 因此，本申请实施例可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请实施例可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请实施例是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的确定单元以产生一个机器，使得通过计算机或其他可编程数据处理设备的确定单元执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (31)

  1. 一种随机接入竞争解决的方法，其特征在于，包括：
    通信设备在随机接入过程中接收网络设备发送的消息四，所述消息四包括媒体接入控制层的控制单元MAC CE，所述MAC CE用于随机接入竞争解决，所述MAC CE的长度为变量；
    所述通信设备根据所述MAC CE确定所述通信设备的随机接入竞争解决是否成功。
  2. 根据权利要求1所述的方法，其特征在于，所述通信设备在随机接入过程中接收网络设备发送的消息四之前，所述方法还包括：
    所述通信设备向所述网络设备发送消息三，所述消息三包括公共控制信道服务数据单元CCCH SDU；
    所述通信设备根据所述MAC CE确定所述通信设备的随机接入竞争解决是否成功包括：
    所述通信设备确定所述MAC CE的参数与所述CCCH SDU的参数是否匹配；
    当所述通信设备确定所述MAC CE的参数与所述CCCH SDU的参数不匹配时，所述通信设备确定所述通信设备随机接入竞争解决失败；
    其中，所述MAC CE的参数包括所述MAC CE的长度和/或类型，所述CCCH SDU的参数包括所述CCCH SDU的长度和/或原因值。
  3. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    当所述通信设备确定所述MAC CE的参数与所述CCCH SDU的参数匹配时，所述通信设备确定所述MAC CE的内容是否包括所述CCCH SDU的全部内容；
    若所述通信设备确定所述MAC CE的内容包括所述CCCH SDU的全部内容，所述通信设备确定所述通信设备随机接入竞争解决成功；
    若所述通信设备确定所述MAC CE的内容不包括所述CCCH SDU的全部内容，所述通信设备确定所述通信设备随机接入竞争解决失败。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述MAC CE的长度与所述CCCH SDU的长度相同，或者所述MAC CE的长度大于所述CCCH SDU的长度。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述MAC CE的长度是预设值的整数倍，所述预设值是根据一个字节包括的比特位的位数确定的。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述MAC CE子头中包括第一指示信息，所述第一指示信息用于指示所述MAC CE的长度或者类型，所述MAC CE的类型与所述MAC CE的长度相关。
  7. 根据权利要求6所述的方法，其特征在于，所述第一指示信息位于所述MAC CE子头中的预留域或逻辑信道标识LCID域或扩展域。
  8. 一种随机接入竞争解决的方法，其特征在于，包括：
    网络设备接收至少一个通信设备在随机接入过程中发送的消息三，所述消息三包括公共控制信道服务数据单元CCCH SDU；
    所述网络设备从所述至少一个通信设备中确定一个目标通信设备；
    所述网络设备根据所述目标通信设备发送的消息三中的CCCH SDU确定媒体接入控制层的控制单元MAC CE，所述MAC CE用于随机接入竞争解决，所述MAC CE的长度 为变量。
  9. 根据权利要求8所述的方法，其特征在于，所述网络设备根据所述目标通信设备发送的消息三中的CCCH SDU确定媒体接入控制层的控制单元MAC CE包括：
    所述网络设备根据所述目标通信设备发送的消息三中的CCCH SDU的参数确定所述MAC CE的参数；
    其中，所述MAC CE的参数包括所述MAC CE的长度和/或类型，所述CCCH SDU的参数包括所述CCCH SDU的长度和/或原因值。
  10. 根据权利要求9所述的方法，其特征在于，所述MAC CE的长度与所述CCCH SDU的长度相同，或者所述MAC CE的长度大于所述目标通信设备发送的消息三中的CCCH SDU的长度。
  11. 根据权利要求8-10任一项所述的方法，其特征在于，所述MAC CE的长度是预设值的整数倍，所述预设值是根据一个字节包括的比特位的位数确定的。
  12. 根据权利要求8-11任一项所述的方法，其特征在于，所述MAC CE子头中包括第一指示信息，所述第一指示信息用于指示所述MAC CE的长度或者类型，所述MAC CE的类型与所述MAC CE的长度相关。
  13. 根据权利要求12所述的方法，其特征在于，所述第一指示信息位于所述MAC CE子头中的预留域或逻辑信道标识LCID域或扩展域。
  14. 一种通信设备，其特征在于，包括：
    发送单元，用于在随机接入过程中接收网络设备发送的消息四，所述消息四包括媒体接入控制层的控制单元MAC CE，所述MAC CE用于随机接入竞争解决，所述MAC CE的长度为变量；
    确定单元，用于根据所述MAC CE确定所述通信设备的随机接入竞争解决是否成功。
  15. 根据权利要求14所述的通信设备，其特征在于，所述发送单元还用于：
    向所述网络设备发送消息三，所述消息三包括公共控制信道服务数据单元CCCH SDU；
    所述确定单元用于：确定所述MAC CE的参数与所述CCCH SDU的参数是否匹配；
    当确定所述MAC CE的参数与所述CCCH SDU的参数不匹配时，确定所述通信设备随机接入竞争解决失败；
    其中，所述MAC CE的参数包括所述MAC CE的长度和/或类型，所述CCCH SDU的参数包括所述CCCH SDU的长度和/或原因值。
  16. 根据权利要求15所述的通信设备，其特征在于，所述确定单元还用于：
    当确定所述MAC CE的参数与所述CCCH SDU的参数匹配时，确定所述MAC CE的内容是否包括所述CCCH SDU的全部内容；
    若确定所述MAC CE的内容包括所述CCCH SDU的全部内容，确定所述通信设备随机接入竞争解决成功；
    若确定所述MAC CE的内容不包括所述CCCH SDU的全部内容，确定所述通信设备随机接入竞争解决失败。
  17. 根据权利要求14-16任一项所述的通信设备，其特征在于，所述MAC CE的长度与所述CCCH SDU的长度相同，或者所述MAC CE的长度大于所述CCCH SDU的长度。
  18. 根据权利要求14-17任一项所述的通信设备，其特征在于，所述MAC CE的长度 是预设值的整数倍，所述预设值是根据一个字节包括的比特位的位数确定的。
  19. 根据权利要求14-18任一项所述的通信设备，其特征在于，所述MAC CE子头中包括第一指示信息，所述第一指示信息用于指示所述MAC CE的长度或者类型，所述MAC CE的类型与所述MAC CE的长度相关。
  20. 根据权利要求19所述的通信设备，其特征在于，所述第一指示信息位于所述MAC CE子头中的预留域或逻辑信道标识LCID域或扩展域。
  21. 一种网络设备，其特征在于，包括：
    接收单元，用于接收至少一个通信设备在随机接入过程中发送的消息三，所述消息三包括公共控制信道服务数据单元CCCH SDU；
    确定单元，用于从所述至少一个通信设备中确定一个目标通信设备；
    所述确定单元，还用于根据所述目标通信设备发送的消息三中的CCCH SDU确定媒体接入控制层的控制单元MAC CE，所述MAC CE用于随机接入竞争解决，所述MAC CE的长度为变量。
  22. 根据权利要求21所述的网络设备，其特征在于，所述确定单元，用于：
    根据所述目标通信设备发送的消息三中的CCCH SDU的参数确定所述MAC CE的参数；
    其中，所述MAC CE的参数包括所述MAC CE的长度和/或类型，所述CCCH SDU的参数包括所述CCCH SDU的长度和/或原因值。
  23. 根据权利要求22所述的网络设备，其特征在于，所述MAC CE的长度与所述CCCH SDU的长度相同，或者所述MAC CE的长度大于所述目标通信设备发送的消息三中的CCCH SDU的长度。
  24. 根据权利要求21-23任一项所述的网络设备，其特征在于，所述MAC CE的长度是预设值的整数倍，所述预设值是根据一个字节包括的比特位的位数确定的。
  25. 根据权利要求21-24任一项所述的网络设备，其特征在于，所述MAC CE子头中包括第一指示信息，所述第一指示信息用于指示所述MAC CE的长度或者类型，所述MAC CE的类型与所述MAC CE的长度相关。
  26. 根据权利要求25所述的网络设备，其特征在于，所述第一指示信息位于所述MAC CE子头中的预留域或逻辑信道标识LCID域或扩展域。
  27. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述程序被处理器执行时实现如权利要求1至7中任一项所述的随机接入竞争解决的方法。
  28. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述程序被处理器执行时实现如权利要求8至13中任一项所述的随机接入竞争解决的方法。
  29. 一种通信装置，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，其特征在于，所述处理器执行所述程序时实现权利要求1至7中任一项所述的随机接入竞争解决的方法。
  30. 一种通信装置，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，其特征在于，所述处理器执行所述程序时实现权利要求8至13中任一项所述的随机接入竞争解决的方法。
  31. 一种通信系统，包括权利要求14至20中任一项所述的通信设备，和权利要求21 至26中任一项所述的网络设备。
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