Terminal, base station, and scheduling request transmission method

A scheduling request sending method comprising:

• receiving, by a terminal from a network side device, a configuration parameter for a scheduling request, wherein the configuration parameter assigns scheduling request resources for sending the scheduling request on at least two carriers, and wherein the scheduling request requests an uplink resource for a transmission of uplink data from the network side device;
• selecting, by the terminal, one carrier from the at least two carriers;
• sending, by the terminal, according to the configuration parameter the scheduling request on a scheduling request resource on the selected carrier of the at least two carriers when the scheduling request is triggered, wherein the at least two carriers comprise at least one secondary carrier and a primary carrier, or the at least two carrier comprise at least two secondary carriers, wherein the configuration parameter comprises a positive integer n related to a threshold length of a first timer, and wherein the threshold length of the first timer is n times a periodicity of a scheduling request resource on a specific carrier of the at least two carriers, the periodicity of the scheduling request resource on the specific carrier being a minimum among periodicities of the scheduling request resources on the at least two carriers;
• starting the first timer according to the threshold length of the first timer after the scheduling request is sent.
• determining a length of a media access control (MAC) service data unit (SDU) in a MAC protocol data unit (PDU), wherein the MAC PDU comprises header information, and wherein the header information comprises a length field (L) indicating the length of the MAC SDU and a 1-bit second length indication field (F2);
• determining that the second length indication field (F2) indicates 1 when the terminal determines that the length of the length field (L) is 16 bits, 17 bits or 23 bits according to the length of the MAC SDU;
• determining that the second length indication field (F2) indicates 0 and that the header information further comprises a length indication field (F) indicating 0 when the terminal determines that the length of the length field (L) is 7 bits according to the length of the MAC SDU;
• determining that the second length indication field (F2) indicates 0 and that the header information further comprises the length indication field (F) indicating 1 when the terminal determines that the length of the length field (L) is 15 bits according to the length of the MAC SDU;
• and
• sending the uplink data including the MAC PDU.

An apparatus comprising:

• a processing circuit configured to determine a configuration parameter for a scheduling request, wherein the configuration parameter assigns scheduling request resources on at least two carriers, and wherein the scheduling request requests an uplink resource for a transmission of uplink data from the apparatus;
• a sending circuit coupled with the processing circuit,
• wherein the sending circuit is configured to send the configuration parameter to a terminal,
• wherein the configuration parameter is used by the terminal to send the scheduling request on a scheduling request resource on one carrier selected by the terminal from the at least two carriers when the scheduling request is triggered,
• wherein the at least two carriers comprises at least one secondary carrier and a primary carrier, or the at least two carriers comprises at least one secondary carrier,
• wherein the configuration parameter comprises a positive integer n related to a threshold length of a first timer, and
• wherein the threshold length of the first timer is n times a periodicity of a scheduling request resource on a specific carrier of the at least two carriers, the periodicity of the scheduling request resource on the specific carrier being a minimum among periodicities of the scheduling request resources on the at least two carriers:
• and
• a receiving circuit configured to receive from the terminal the uplink data comprising a media access control (MAC) protocol data unit (PDU), wherein the MAC PDU comprises header information and a MAC service data unit (SDU), and wherein the header information comprises a length field (L) indicating a length of the MAC SDU and a 1-bit second length indication field (F2);
• wherein the processing circuit is further configured to:
• determine that a length of the length field (L) is 16 bits, 17 bits or 23 bits when the second length indication field (F2) indicates 1;
• determine that the length of the length field (L) is 7 bits when the second length indication field (F2) indicates 0 and when the header information further comprises a length indication field (F) indicating 0;
• determine that the length of the length field (L) is 15 bits when the second length indication field (F2) indicates 0 and when the header information further comprises the length indication field (F) indicating 1;
• determine the length of the MAC SDU according to the length of the length field (L);
• and
• determine the MAC SDU according to the length of the MAC SDU.

A method comprising:

• determining, by a network side device, a configuration parameter for a scheduling request, wherein the configuration parameter assigns scheduling request resources on at least two carriers, and wherein the scheduling request requests an uplink resource for a transmission of uplink data from the network side device;
• sending, by the network side device, the configuration parameter to a terminal,
• wherein the configuration parameter is used by the terminal to send the scheduling request on a scheduling request resource on one carrier selected by the terminal from the at least two carriers when the scheduling request is triggered,
• wherein the at least two carriers comprises at least one secondary carrier and a primary carrier, or the at least two carriers comprises at least one secondary carrier,
• wherein the configuration parameter comprises a positive integer n related to a threshold length of a first timer, and
• wherein the threshold length of the first timer is n times a periodicity of a scheduling request resource on a specific carrier of the at least two carriers, the periodicity of the scheduling request resource on the specific carrier being a minimum among periodicities of the scheduling request resources on the at least two carriers;
• receiving, by the network side device from the terminal, the uplink data comprising a media access control (MAC) protocol data unit (PDU), wherein the MAC PDU comprises header information and a MAC service data unit (SDU), and wherein the header information comprises a length field (L) indicating a length of the MAC SDU and a 1-bit second length indication field (F2);
• determining that a length of the length field (L) is 16 bits, 17 bits or 23 bits when the second length indication field (F2) indicates 1;
• determining that the length of the length field (L) is 7 bits when the second length indication field (F2) indicates 0 and when the header information further comprises a length indication field (F) indicating 0;
• determining that the length of the length field (L) is 15 bits when the second length indication field (F2) indicates 0 and when the header information further comprises the length indication field (F) indicating 1;
• determining the length of the MAC SDU according to the length of the length field (L);
• and
• determining the MAC SDU according to the length of the MAC SDU.