阅读说明：本技术 随机接入的方法和装置 (Random access method and device ) 是由 任剑 吴毅凌 朱小松 李铮 于 2018-02-07 设计创作，主要内容包括：本申请提供了一种随机接入的方法和装置,能够降低终端设备的复杂度。该随机接入的方法包括：接入网设备在第一物理随机接入信道载波上接收第一终端设备发送的第一随机接入前导码；所述接入网设备根据所述第一随机接入前导码和所述第一物理随机接入信道载波中的至少一种,在物理下行控制信道资源池中确定第一物理下行控制信道载波,其中,所述物理下行控制信道资源池中包括至少一个物理下行控制信道载波；所述接入网设备通过所述第一物理下行控制信道载波调度对应于所述第一随机接入前导码的随机接入响应的下行控制信息。(The application provides a random access method and a random access device, which can reduce the complexity of terminal equipment. The random access method comprises the following steps: the access network equipment receives a first random access lead code sent by first terminal equipment on a first physical random access channel carrier; the access network equipment determines a first physical downlink control channel carrier in a physical downlink control channel resource pool according to at least one of the first random access preamble and the first physical random access channel carrier, wherein the physical downlink control channel resource pool comprises at least one physical downlink control channel carrier; and the access network equipment schedules downlink control information of a random access response corresponding to the first random access lead code through the first physical downlink control channel carrier.)

A method of random access, comprising:

the access network equipment receives a first random access lead code sent by first terminal equipment on a first physical random access channel carrier;

the access network equipment determines a first physical downlink control channel carrier in a first physical downlink control channel resource pool according to at least one of the first random access preamble and the first physical random access channel carrier, wherein the physical downlink control channel resource pool comprises at least one physical downlink control channel carrier;

and the access network equipment schedules downlink control information of a random access response corresponding to the first random access lead code through the first physical downlink control channel carrier.

The method of claim 1, wherein the access network device determines a first physical downlink control channel carrier in a physical downlink control channel resource pool according to at least one of the first random access preamble and the first physical random access channel carrier, and includes:

the access network equipment determines a first index according to at least one of the index of the first random access preamble and the index of the first physical random access channel carrier;

and the access network equipment takes the physical downlink control channel carrier corresponding to the first index in the physical downlink control channel resource pool as the first physical downlink control channel carrier.

The method of claim 2, wherein the access network device determines the first index according to at least one of an index of the first random access preamble and an index of the first physical random access channel carrier, and comprises:

the access network equipment determines the first index according to the index of the first random access preamble code, wherein the first index and the index of the first random access preamble code have the following relation:

N＝mod(N_1-Index+a，N₂+b)，

where N represents the value of the first index, mod () is a remainder function, N_1-IndexA value, N, representing an index of the first random access preamble₂And a and b are integers respectively, and the number of the physical downlink control channel carriers in the physical downlink control channel resource pool is represented.

The method of claim 2, wherein the access network device determines the first index according to at least one of an index of the first random access preamble and an index of the first physical random access channel carrier, and comprises:

the access network equipment determines the first index according to the index of the first random access preamble and the index of the first physical random access channel carrier, wherein the first index, the index of the first physical random access channel carrier and the index of the first random access preamble have the following relations:

N＝mod((N_3-Index+a)*(N_1-Index+b)+c，N₂+d)，

where N represents the value of the first index, mod () is a remainder function, N_3-IndexIndicating that the first physical random access channel carrier is inIndex in physical random access channel resource pool, N_1-IndexA value, N, representing an index of the first random access preamble₂And the number of the physical downlink control channel carriers in the physical downlink control channel resource pool is represented, the physical random access channel resource pool comprises at least one physical random access channel carrier, and a, b, c and d are integers respectively.

The method of claim 2, wherein the access network device determines the first index according to at least one of an index of the first random access preamble and an index of the first physical random access channel carrier, and comprises:

the access network equipment determines the first index according to the index of the first random access preamble and the index of the first physical random access channel carrier, wherein the first index, the index of the first random access preamble and the index of the first physical random access channel carrier have the following relations:

N＝mod((N_3-Index+a)*(N₁+b)+N_1-Index+c，N₂+ d), or

N＝mod((N_1-Index+a)*(N₃+b)+N_3-Index+c，N₂+d)

Where N represents the value of the first index, mod () is a remainder function, N_3-IndexIndicating an index of the first physical random access channel carrier in a physical random access channel resource pool, N_1-IndexA value, N, representing an index of the first random access preamble₁Representing the number of random access preambles comprised in the set of random access preambles, N₂Indicating the number of physical downlink control channel carriers, N, included in the physical downlink control channel resource pool₃Indicating the number of physical random access channel carriers included in the physical random access channel resource pool, where the physical random access channel resource pool includes at least one physical random access channel carrier, and the random access preamble set includes that the access network device is the terminal deviceAnd a, b, c and d are integers respectively.

The method of any of claims 1-5, wherein the access network device further comprises, before receiving the first random access preamble sent by the first terminal device on the first physical random access channel carrier:

the access network device sends a first message to the first terminal device, where the first message is used to indicate information of each physical downlink control channel carrier in the at least one physical downlink control channel carrier in the physical downlink control channel resource pool.

The method of any one of claims 1-6, further comprising:

the access network equipment receives a second random access lead code sent by second terminal equipment on a second physical random access channel carrier;

the access network equipment determines a second physical downlink control channel carrier in a second physical downlink control channel resource pool according to at least one of the second random access preamble and the second physical random access channel carrier, wherein the second physical downlink control channel resource pool is different from the first physical downlink control channel resource pool, and the physical downlink control channel resource pool comprises at least one physical downlink control channel carrier;

and the access network equipment schedules downlink control information of the random access response corresponding to the second random access lead code through the second physical downlink control channel carrier wave.

A method of random access, comprising:

the terminal equipment sends a random access lead code to the access network equipment through a first physical downlink control channel carrier;

the terminal equipment determines a first physical downlink control channel carrier in a physical downlink control channel resource pool according to at least one of the random access lead code and the first physical downlink control channel carrier, wherein the physical downlink control channel resource pool comprises at least one physical downlink control channel carrier;

and the terminal equipment receives downlink control information which is sent by the access network equipment and corresponds to the random access preamble scheduling random access response through the first physical downlink control channel carrier.

The method according to claim 8, wherein the determining, by the terminal device, a first physical downlink control channel carrier in a physical downlink control channel resource pool according to at least one of the random access preamble and the first physical downlink control channel carrier, comprises:

the terminal equipment determines a first index according to at least one of the index of the random access preamble and the index of the first physical random access channel carrier;

and the terminal equipment takes the physical downlink control channel carrier corresponding to the first index in the physical downlink control channel resource pool as the first physical downlink control channel carrier.

The method of claim 9, wherein the determining, by the terminal device, the first index according to at least one of the index of the random access preamble and the index of the first physical random access channel carrier comprises:

the terminal equipment determines the first index according to the index of the random access preamble, wherein the first index and the index of the random access preamble have the following relation:

N＝mod(N_1-Index+a，N₂+b)，

where N represents the value of the first index, mod () is a remainder function, N_1-IndexA value, N, representing an index of the random access preamble₂Indicating the physical downlink control included in the physical downlink control channel resource poolThe number of the channel-making carriers, a and b are integers respectively.

The method of claim 9, wherein the determining, by the terminal device, the first index according to at least one of the index of the random access preamble and the index of the first physical random access channel carrier comprises:

the terminal equipment determines the first index according to the index of the random access preamble and the index of the first physical random access channel carrier, wherein the first index, the index of the first physical random access channel carrier and the index of the random access preamble have the following relations:

N＝mod((N_3-index+a)*(N_1-Index+b)+c，N₂+d)，

where N represents the value of the first index, mod () is a remainder function, N_3-indexIndicating an index of the first physical random access channel carrier in a physical random access channel resource pool, N_1-IndexA value, N, representing an index of the random access preamble₂And the number of the physical downlink control channel carriers in the physical downlink control channel resource pool is represented, the physical random access channel resource pool comprises at least one physical random access channel carrier, and a, b, c and d are integers respectively.

The method of claim 9, wherein the determining, by the terminal device, the first index according to at least one of the index of the random access preamble and the index of the first physical random access channel carrier comprises:

the terminal device determines the first index according to the index of the first random access preamble and the index of the first physical random access channel carrier, wherein the first index, the index of the first random access preamble and the index of the first physical random access channel carrier have the following relations:

N＝mod((N_3-Index+a)*(N₁+b)+N_1-Index+c，N₂+ d), or

N＝mod((N_1-Index+a)*(N₃+b)+N_3-Index+c，N₂+d)

Where N represents the value of the first index, mod () is a remainder function, N_3-IndexIndicating an index of the first physical random access channel carrier in a physical random access channel resource pool, N_1-IndexA value, N, representing an index of the first random access preamble₁Representing the number of random access preambles comprised in the set of random access preambles, N₂Indicating the number of physical downlink control channel carriers, N, included in the physical downlink control channel resource pool₃The number of physical random access channel carriers included in the physical random access channel resource pool is represented, the physical random access channel resource pool includes at least one physical random access channel carrier, the random access preamble set includes an available random access preamble configured for the terminal device by the access network device, and a, b, c, and d are integers, respectively.

The method of any of claims 8-12, wherein the terminal device transmitting a random access preamble to an access network device on the first physical random access channel carrier comprises:

the terminal equipment determines the first physical random access channel carrier in a physical random access channel resource pool, wherein the physical random access channel resource pool comprises at least one physical random access channel carrier;

and the terminal equipment sends the random access preamble on the first physical random access channel carrier.

The method of any of claims 8-13, wherein before the terminal device sends a random access preamble to an access network device on the first physical random access channel carrier, further comprising:

and the terminal equipment receives a first message sent by the access network equipment, wherein the first message is used for indicating the information of each physical downlink control channel carrier in the at least one physical downlink control channel carrier in the physical downlink control channel resource pool.

An apparatus for random access, comprising:

a receiving unit, configured to receive a first random access preamble sent by a first terminal device on a first physical random access channel carrier;

a determining unit, configured to determine a first physical downlink control channel carrier in a first physical downlink control channel resource pool according to at least one of the first random access preamble and the first physical random access channel carrier, where the physical downlink control channel resource pool includes at least one physical downlink control channel carrier;

a sending unit, configured to schedule, through the first physical downlink control channel carrier, downlink control information corresponding to a random access response of the first random access preamble.

The apparatus according to claim 15, wherein the determining unit is specifically configured to:

determining a first index according to at least one of the index of the first random access preamble and the index of the first physical random access channel carrier;

and taking the physical downlink control channel carrier corresponding to the first index in the physical downlink control channel resource pool as the first physical downlink control channel carrier.

The apparatus according to claim 16, wherein the determining unit is specifically configured to:

determining the first index according to the index of the first random access preamble code, wherein the first index has the following relation with the index of the first random access preamble code:

N＝mod(N_1-Index+a，N₂+b)，

where N represents the value of the first index, mod () is a remainder function, N_1-IndexA value, N, representing an index of the first random access preamble₂And a and b are integers respectively, and the number of the physical downlink control channel carriers in the physical downlink control channel resource pool is represented.

The apparatus according to claim 16, wherein the determining unit is specifically configured to:

determining the first index according to the index of the first random access preamble and the index of the first physical random access channel carrier, wherein the first index, the index of the first physical random access channel carrier and the index of the first random access preamble have the following relations:

N＝mod((N_3-Index+a)*(N_1-Index+b)+c，N₂+d)，

where N represents the value of the first index, mod () is a remainder function, N_3-IndexIndicating an index of the first physical random access channel carrier in a physical random access channel resource pool, N_1-IndexA value, N, representing an index of the first random access preamble₂And the number of the physical downlink control channel carriers in the physical downlink control channel resource pool is represented, the physical random access channel resource pool comprises at least one physical random access channel carrier, and a, b, c and d are integers respectively.

The apparatus according to claim 16, wherein the determining unit is specifically configured to:

determining the first index according to the index of the first random access preamble and the index of the first physical random access channel carrier, wherein the first index, the index of the first random access preamble and the index of the first physical random access channel carrier have the following relations:

N＝mod((N_3-Index+a)*(N₁+b)+N_1-Index+c，N₂+ d), or

N＝mod((N_1-Index+a)*(N₃+b)+N_3-Index+c，N₂+d)

Where N represents the value of the first index, mod () is a remainder function, N_3-IndexIndicating an index of the first physical random access channel carrier in a physical random access channel resource pool, N_1-IndexA value, N, representing an index of the first random access preamble₁Representing the number of random access preambles comprised in the set of random access preambles, N₂Indicating the number of physical downlink control channel carriers, N, included in the physical downlink control channel resource pool₃The number of physical random access channel carriers included in the physical random access channel resource pool is represented, the physical random access channel resource pool includes at least one physical random access channel carrier, the random access preamble set includes an available random access preamble configured for the terminal device by the access network device, and a, b, c, and d are integers, respectively.

The apparatus of any one of claims 15-19,

the sending unit is further configured to send, by the device, a first message to the first terminal device, where the first message is used to indicate information of each physical downlink control channel carrier in the at least one physical downlink control channel carrier in the physical downlink control channel resource pool.

The apparatus of any one of claims 15-20, further comprising:

the receiving unit is further configured to receive a second random access preamble sent by a second terminal device on a second physical random access channel carrier;

the determining unit is further configured to determine, according to at least one of the second random access preamble and the second physical random access channel carrier, a second physical downlink control channel carrier in a second physical downlink control channel resource pool, where the second physical downlink control channel resource pool is different from the first physical downlink control channel resource pool, and the physical downlink control channel resource pool includes at least one physical downlink control channel carrier;

the sending unit is further configured to schedule downlink control information corresponding to the random access response of the second random access preamble through the second physical downlink control channel carrier.

An apparatus for random access, comprising:

a sending unit, configured to send a random access preamble to an access network device through a first physical downlink control channel carrier;

a determining unit, configured to determine, according to at least one of the random access preamble and the first physical downlink control channel carrier, a first physical downlink control channel carrier in a physical downlink control channel resource pool, where the physical downlink control channel resource pool includes at least one physical downlink control channel carrier;

a receiving unit, configured to receive, through the first physical downlink control channel carrier, downlink control information, which is sent by the access network device and corresponds to a scheduling random access response of the random access preamble.

The apparatus according to claim 22, wherein the determining unit is specifically configured to:

determining a first index according to at least one of the index of the random access preamble and the index of the first physical random access channel carrier;

and taking the physical downlink control channel carrier corresponding to the first index in the physical downlink control channel resource pool as the first physical downlink control channel carrier.

The apparatus according to claim 23, wherein the determining unit is specifically configured to:

determining the first index according to the index of the random access preamble, wherein the first index has the following relation with the index of the random access preamble:

N＝mod(N_1-Index+a，N₂+b)，

where N represents the value of the first index, mod () is a remainder function, N_1-IndexA value, N, representing an index of the random access preamble₂And a and b are integers respectively, and the number of the physical downlink control channel carriers in the physical downlink control channel resource pool is represented.

The apparatus according to claim 23, wherein the determining unit is specifically configured to:

determining the first index according to the index of the random access preamble and the index of the first physical random access channel carrier, wherein the first index, the index of the first physical random access channel carrier and the index of the random access preamble have the following relations:

N＝mod((N_3-index+a)*(N_1-Index+b)+c，N₂+d)，

where N represents the value of the first index, mod () is a remainder function, N_3-indexIndicating an index of the first physical random access channel carrier in a physical random access channel resource pool, N_1-IndexA value, N, representing an index of the random access preamble₂And the number of the physical downlink control channel carriers in the physical downlink control channel resource pool is represented, the physical random access channel resource pool comprises at least one physical random access channel carrier, and a, b, c and d are integers respectively.

The apparatus according to claim 23, wherein the determining unit is specifically configured to:

determining the first index according to the index of the first random access preamble and the index of the first physical random access channel carrier, wherein the first index, the index of the first random access preamble and the index of the first physical random access channel carrier have the following relationship:

N＝mod((N_3-Index+a)*(N₁+b)+N_1-Index+c，N₂+ d), or

N＝mod((N_1-Index+a)*(N₃+b)+N_3-Index+c，N₂+d)

Where N represents the value of the first index, mod () is a remainder function, N_3-IndexIndicating an index of the first physical random access channel carrier in a physical random access channel resource pool, N_1-IndexA value, N, representing an index of the first random access preamble₁Representing the number of random access preambles comprised in the set of random access preambles, N₂Indicating the number of physical downlink control channel carriers, N, included in the physical downlink control channel resource pool₃The number of physical random access channel carriers included in the physical random access channel resource pool is represented, the physical random access channel resource pool includes at least one physical random access channel carrier, the random access preamble set includes an available random access preamble configured for the terminal device by the access network device, and a, b, c, and d are integers, respectively.

The apparatus according to any of claims 22-26, wherein the sending unit is specifically configured to:

determining the first physical random access channel carrier in a physical random access channel resource pool, wherein the physical random access channel resource pool comprises at least one physical random access channel carrier;

transmitting the random access preamble on the first physical random access channel carrier.

The apparatus according to any of claims 22-27, wherein the receiving unit is further configured to receive a first message sent by the access network device, where the first message is used to indicate information of each of the at least one physical downlink control channel carrier in the physical downlink control channel resource pool.